| Index: observatory_pub_packages/analyzer/src/generated/constant.dart
|
| ===================================================================
|
| --- observatory_pub_packages/analyzer/src/generated/constant.dart (revision 0)
|
| +++ observatory_pub_packages/analyzer/src/generated/constant.dart (working copy)
|
| @@ -0,0 +1,4973 @@
|
| +// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
|
| +// for details. All rights reserved. Use of this source code is governed by a
|
| +// BSD-style license that can be found in the LICENSE file.
|
| +
|
| +// This code was auto-generated, is not intended to be edited, and is subject to
|
| +// significant change. Please see the README file for more information.
|
| +
|
| +library engine.constant;
|
| +
|
| +import 'dart:collection';
|
| +import 'java_core.dart';
|
| +import 'java_engine.dart' show ObjectUtilities;
|
| +import 'source.dart' show Source;
|
| +import 'error.dart' show AnalysisError, ErrorCode, CompileTimeErrorCode;
|
| +import 'scanner.dart' show Token, TokenType;
|
| +import 'ast.dart';
|
| +import 'element.dart';
|
| +import 'resolver.dart' show TypeProvider;
|
| +import 'engine.dart' show AnalysisEngine;
|
| +import 'utilities_dart.dart' show ParameterKind;
|
| +import 'utilities_collection.dart';
|
| +
|
| +/**
|
| + * Instances of the class `BoolState` represent the state of an object representing a boolean
|
| + * value.
|
| + */
|
| +class BoolState extends InstanceState {
|
| + /**
|
| + * The value of this instance.
|
| + */
|
| + final bool value;
|
| +
|
| + /**
|
| + * An instance representing the boolean value 'false'.
|
| + */
|
| + static BoolState FALSE_STATE = new BoolState(false);
|
| +
|
| + /**
|
| + * An instance representing the boolean value 'true'.
|
| + */
|
| + static BoolState TRUE_STATE = new BoolState(true);
|
| +
|
| + /**
|
| + * A state that can be used to represent a boolean whose value is not known.
|
| + */
|
| + static BoolState UNKNOWN_VALUE = new BoolState(null);
|
| +
|
| + /**
|
| + * Return the boolean state representing the given boolean value.
|
| + *
|
| + * @param value the value to be represented
|
| + * @return the boolean state representing the given boolean value
|
| + */
|
| + static BoolState from(bool value) => value ? BoolState.TRUE_STATE : BoolState.FALSE_STATE;
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent the given value.
|
| + *
|
| + * @param value the value of this instance
|
| + */
|
| + BoolState(this.value);
|
| +
|
| + @override
|
| + BoolState convertToBool() => this;
|
| +
|
| + @override
|
| + StringState convertToString() {
|
| + if (value == null) {
|
| + return StringState.UNKNOWN_VALUE;
|
| + }
|
| + return new StringState(value ? "true" : "false");
|
| + }
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is BoolState) {
|
| + bool rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(identical(value, rightValue));
|
| + } else if (rightOperand is DynamicState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return FALSE_STATE;
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) => object is BoolState && identical(value, object.value);
|
| +
|
| + @override
|
| + String get typeName => "bool";
|
| +
|
| + @override
|
| + bool get hasExactValue => true;
|
| +
|
| + @override
|
| + int get hashCode => value == null ? 0 : (value ? 2 : 3);
|
| +
|
| + /**
|
| + * Return `true` if this object represents an object whose type is 'bool'.
|
| + *
|
| + * @return `true` if this object represents a boolean value
|
| + */
|
| + @override
|
| + bool get isBool => true;
|
| +
|
| + @override
|
| + bool get isBoolNumStringOrNull => true;
|
| +
|
| + @override
|
| + bool get isUnknown => value == null;
|
| +
|
| + @override
|
| + BoolState logicalAnd(InstanceState rightOperand) {
|
| + assertBool(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return value ? rightOperand.convertToBool() : FALSE_STATE;
|
| + }
|
| +
|
| + @override
|
| + BoolState logicalNot() {
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return value ? FALSE_STATE : TRUE_STATE;
|
| + }
|
| +
|
| + @override
|
| + BoolState logicalOr(InstanceState rightOperand) {
|
| + assertBool(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return value ? TRUE_STATE : rightOperand.convertToBool();
|
| + }
|
| +
|
| + @override
|
| + String toString() => value == null ? "-unknown-" : (value ? "true" : "false");
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `ConstantEvaluator` evaluate constant expressions to produce their
|
| + * compile-time value. According to the Dart Language Specification: <blockquote> A constant
|
| + * expression is one of the following:
|
| + * * A literal number.
|
| + * * A literal boolean.
|
| + * * A literal string where any interpolated expression is a compile-time constant that evaluates
|
| + * to a numeric, string or boolean value or to <b>null</b>.
|
| + * * A literal symbol.
|
| + * * <b>null</b>.
|
| + * * A qualified reference to a static constant variable.
|
| + * * An identifier expression that denotes a constant variable, class or type alias.
|
| + * * A constant constructor invocation.
|
| + * * A constant list literal.
|
| + * * A constant map literal.
|
| + * * A simple or qualified identifier denoting a top-level function or a static method.
|
| + * * A parenthesized expression <i>(e)</i> where <i>e</i> is a constant expression.
|
| + * * An expression of the form <i>identical(e<sub>1</sub>, e<sub>2</sub>)</i> where
|
| + * <i>e<sub>1</sub></i> and <i>e<sub>2</sub></i> are constant expressions and <i>identical()</i> is
|
| + * statically bound to the predefined dart function <i>identical()</i> discussed above.
|
| + * * An expression of one of the forms <i>e<sub>1</sub> == e<sub>2</sub></i> or <i>e<sub>1</sub>
|
| + * != e<sub>2</sub></i> where <i>e<sub>1</sub></i> and <i>e<sub>2</sub></i> are constant expressions
|
| + * that evaluate to a numeric, string or boolean value.
|
| + * * An expression of one of the forms <i>!e</i>, <i>e<sub>1</sub> && e<sub>2</sub></i> or
|
| + * <i>e<sub>1</sub> || e<sub>2</sub></i>, where <i>e</i>, <i>e1</sub></i> and <i>e2</sub></i> are
|
| + * constant expressions that evaluate to a boolean value.
|
| + * * An expression of one of the forms <i>~e</i>, <i>e<sub>1</sub> ^ e<sub>2</sub></i>,
|
| + * <i>e<sub>1</sub> & e<sub>2</sub></i>, <i>e<sub>1</sub> | e<sub>2</sub></i>, <i>e<sub>1</sub>
|
| + * >> e<sub>2</sub></i> or <i>e<sub>1</sub> << e<sub>2</sub></i>, where <i>e</i>,
|
| + * <i>e<sub>1</sub></i> and <i>e<sub>2</sub></i> are constant expressions that evaluate to an
|
| + * integer value or to <b>null</b>.
|
| + * * An expression of one of the forms <i>-e</i>, <i>e<sub>1</sub> + e<sub>2</sub></i>,
|
| + * <i>e<sub>1</sub> -e<sub>2</sub></i>, <i>e<sub>1</sub> * e<sub>2</sub></i>, <i>e<sub>1</sub> /
|
| + * e<sub>2</sub></i>, <i>e<sub>1</sub> ~/ e<sub>2</sub></i>, <i>e<sub>1</sub> >
|
| + * e<sub>2</sub></i>, <i>e<sub>1</sub> < e<sub>2</sub></i>, <i>e<sub>1</sub> >=
|
| + * e<sub>2</sub></i>, <i>e<sub>1</sub> <= e<sub>2</sub></i> or <i>e<sub>1</sub> %
|
| + * e<sub>2</sub></i>, where <i>e</i>, <i>e<sub>1</sub></i> and <i>e<sub>2</sub></i> are constant
|
| + * expressions that evaluate to a numeric value or to <b>null</b>.
|
| + * * An expression of the form <i>e<sub>1</sub> ? e<sub>2</sub> : e<sub>3</sub></i> where
|
| + * <i>e<sub>1</sub></i>, <i>e<sub>2</sub></i> and <i>e<sub>3</sub></i> are constant expressions, and
|
| + * <i>e<sub>1</sub></i> evaluates to a boolean value.
|
| + * </blockquote>
|
| + */
|
| +class ConstantEvaluator {
|
| + /**
|
| + * The source containing the expression(s) that will be evaluated.
|
| + */
|
| + final Source _source;
|
| +
|
| + /**
|
| + * The type provider used to access the known types.
|
| + */
|
| + final TypeProvider _typeProvider;
|
| +
|
| + /**
|
| + * Initialize a newly created evaluator to evaluate expressions in the given source.
|
| + *
|
| + * @param source the source containing the expression(s) that will be evaluated
|
| + * @param typeProvider the type provider used to access known types
|
| + */
|
| + ConstantEvaluator(this._source, this._typeProvider);
|
| +
|
| + EvaluationResult evaluate(Expression expression) {
|
| + EvaluationResultImpl result = expression.accept(new ConstantVisitor.con1(_typeProvider));
|
| + if (result is ValidResult) {
|
| + return EvaluationResult.forValue(result.value);
|
| + }
|
| + List<AnalysisError> errors = new List<AnalysisError>();
|
| + for (ErrorResult_ErrorData data in (result as ErrorResult).errorData) {
|
| + AstNode node = data.node;
|
| + errors.add(new AnalysisError.con2(_source, node.offset, node.length, data.errorCode, []));
|
| + }
|
| + return EvaluationResult.forErrors(new List.from(errors));
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `ConstantFinder` are used to traverse the AST structures of all of
|
| + * the compilation units being resolved and build a table mapping constant variable elements to the
|
| + * declarations of those variables.
|
| + */
|
| +class ConstantFinder extends RecursiveAstVisitor<Object> {
|
| + /**
|
| + * A table mapping constant variable elements to the declarations of those variables.
|
| + */
|
| + final HashMap<VariableElement, VariableDeclaration> variableMap = new HashMap<VariableElement, VariableDeclaration>();
|
| +
|
| + /**
|
| + * A table mapping constant constructors to the declarations of those constructors.
|
| + */
|
| + final HashMap<ConstructorElement, ConstructorDeclaration> constructorMap = new HashMap<ConstructorElement, ConstructorDeclaration>();
|
| +
|
| + /**
|
| + * A collection of constant constructor invocations.
|
| + */
|
| + final List<InstanceCreationExpression> constructorInvocations = new List<InstanceCreationExpression>();
|
| +
|
| + @override
|
| + Object visitConstructorDeclaration(ConstructorDeclaration node) {
|
| + super.visitConstructorDeclaration(node);
|
| + if (node.constKeyword != null) {
|
| + ConstructorElement element = node.element;
|
| + if (element != null) {
|
| + constructorMap[element] = node;
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitInstanceCreationExpression(InstanceCreationExpression node) {
|
| + super.visitInstanceCreationExpression(node);
|
| + if (node.isConst) {
|
| + constructorInvocations.add(node);
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitVariableDeclaration(VariableDeclaration node) {
|
| + super.visitVariableDeclaration(node);
|
| + Expression initializer = node.initializer;
|
| + if (initializer != null && node.isConst) {
|
| + VariableElement element = node.element;
|
| + if (element != null) {
|
| + variableMap[element] = node;
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `ConstantValueComputer` compute the values of constant variables and
|
| + * constant constructor invocations in one or more compilation units. The expected usage pattern is
|
| + * for the compilation units to be added to this computer using the method
|
| + * [add] and then for the method [computeValues] to be invoked
|
| + * exactly once. Any use of an instance after invoking the method [computeValues] will
|
| + * result in unpredictable behavior.
|
| + */
|
| +class ConstantValueComputer {
|
| + /**
|
| + * Parameter to "fromEnvironment" methods that denotes the default value.
|
| + */
|
| + static String _DEFAULT_VALUE_PARAM = "defaultValue";
|
| +
|
| + /**
|
| + * Source of RegExp matching declarable operator names. From sdk/lib/internal/symbol.dart.
|
| + */
|
| + static String _OPERATOR_RE = "(?:[\\-+*/%&|^]|\\[\\]=?|==|~/?|<[<=]?|>[>=]?|unary-)";
|
| +
|
| + /**
|
| + * Source of RegExp matching any public identifier. From sdk/lib/internal/symbol.dart.
|
| + */
|
| + static String _PUBLIC_IDENTIFIER_RE = "(?!${ConstantValueComputer._RESERVED_WORD_RE}\\b(?!\\\$))[a-zA-Z\$][\\w\$]*";
|
| +
|
| + /**
|
| + * Source of RegExp matching Dart reserved words. From sdk/lib/internal/symbol.dart.
|
| + */
|
| + static String _RESERVED_WORD_RE = "(?:assert|break|c(?:a(?:se|tch)|lass|on(?:st|tinue))|d(?:efault|o)|e(?:lse|num|xtends)|f(?:alse|inal(?:ly)?|or)|i[fns]|n(?:ew|ull)|ret(?:hrow|urn)|s(?:uper|witch)|t(?:h(?:is|row)|r(?:ue|y))|v(?:ar|oid)|w(?:hile|ith))";
|
| +
|
| + /**
|
| + * RegExp that validates a non-empty non-private symbol. From sdk/lib/internal/symbol.dart.
|
| + */
|
| + static RegExp _PUBLIC_SYMBOL_PATTERN = new RegExp("^(?:${ConstantValueComputer._OPERATOR_RE}\$|${_PUBLIC_IDENTIFIER_RE}(?:=?\$|[.](?!\$)))+?\$");
|
| +
|
| + /**
|
| + * Determine whether the given string is a valid name for a public symbol (i.e. whether it is
|
| + * allowed for a call to the Symbol constructor).
|
| + */
|
| + static bool isValidPublicSymbol(String name) => name.isEmpty || name == "void" || new JavaPatternMatcher(_PUBLIC_SYMBOL_PATTERN, name).matches();
|
| +
|
| + /**
|
| + * The type provider used to access the known types.
|
| + */
|
| + TypeProvider typeProvider;
|
| +
|
| + /**
|
| + * The object used to find constant variables and constant constructor invocations in the
|
| + * compilation units that were added.
|
| + */
|
| + ConstantFinder _constantFinder = new ConstantFinder();
|
| +
|
| + /**
|
| + * A graph in which the nodes are the constants, and the edges are from each constant to the other
|
| + * constants that are referenced by it.
|
| + */
|
| + DirectedGraph<AstNode> referenceGraph = new DirectedGraph<AstNode>();
|
| +
|
| + /**
|
| + * A table mapping constant variables to the declarations of those variables.
|
| + */
|
| + HashMap<VariableElement, VariableDeclaration> _variableDeclarationMap;
|
| +
|
| + /**
|
| + * A table mapping constant constructors to the declarations of those constructors.
|
| + */
|
| + HashMap<ConstructorElement, ConstructorDeclaration> constructorDeclarationMap;
|
| +
|
| + /**
|
| + * A collection of constant constructor invocations.
|
| + */
|
| + List<InstanceCreationExpression> _constructorInvocations;
|
| +
|
| + /**
|
| + * The set of variables declared on the command line using '-D'.
|
| + */
|
| + final DeclaredVariables _declaredVariables;
|
| +
|
| + /**
|
| + * Initialize a newly created constant value computer.
|
| + *
|
| + * @param typeProvider the type provider used to access known types
|
| + * @param declaredVariables the set of variables declared on the command line using '-D'
|
| + */
|
| + ConstantValueComputer(TypeProvider typeProvider, this._declaredVariables) {
|
| + this.typeProvider = typeProvider;
|
| + }
|
| +
|
| + /**
|
| + * Add the constants in the given compilation unit to the list of constants whose value needs to
|
| + * be computed.
|
| + *
|
| + * @param unit the compilation unit defining the constants to be added
|
| + */
|
| + void add(CompilationUnit unit) {
|
| + unit.accept(_constantFinder);
|
| + }
|
| +
|
| + /**
|
| + * Compute values for all of the constants in the compilation units that were added.
|
| + */
|
| + void computeValues() {
|
| + _variableDeclarationMap = _constantFinder.variableMap;
|
| + constructorDeclarationMap = _constantFinder.constructorMap;
|
| + _constructorInvocations = _constantFinder.constructorInvocations;
|
| + for (MapEntry<VariableElement, VariableDeclaration> entry in getMapEntrySet(_variableDeclarationMap)) {
|
| + VariableDeclaration declaration = entry.getValue();
|
| + ReferenceFinder referenceFinder = new ReferenceFinder(declaration, referenceGraph, _variableDeclarationMap, constructorDeclarationMap);
|
| + referenceGraph.addNode(declaration);
|
| + declaration.initializer.accept(referenceFinder);
|
| + }
|
| + for (MapEntry<ConstructorElement, ConstructorDeclaration> entry in getMapEntrySet(constructorDeclarationMap)) {
|
| + ConstructorDeclaration declaration = entry.getValue();
|
| + ReferenceFinder referenceFinder = new ReferenceFinder(declaration, referenceGraph, _variableDeclarationMap, constructorDeclarationMap);
|
| + referenceGraph.addNode(declaration);
|
| + bool superInvocationFound = false;
|
| + NodeList<ConstructorInitializer> initializers = declaration.initializers;
|
| + for (ConstructorInitializer initializer in initializers) {
|
| + if (initializer is SuperConstructorInvocation) {
|
| + superInvocationFound = true;
|
| + }
|
| + initializer.accept(referenceFinder);
|
| + }
|
| + if (!superInvocationFound) {
|
| + // No explicit superconstructor invocation found, so we need to manually insert
|
| + // a reference to the implicit superconstructor.
|
| + InterfaceType superclass = (entry.getKey().returnType as InterfaceType).superclass;
|
| + if (superclass != null && !superclass.isObject) {
|
| + ConstructorElement unnamedConstructor = superclass.element.unnamedConstructor;
|
| + ConstructorDeclaration superConstructorDeclaration = findConstructorDeclaration(unnamedConstructor);
|
| + if (superConstructorDeclaration != null) {
|
| + referenceGraph.addEdge(declaration, superConstructorDeclaration);
|
| + }
|
| + }
|
| + }
|
| + for (FormalParameter parameter in declaration.parameters.parameters) {
|
| + referenceGraph.addNode(parameter);
|
| + referenceGraph.addEdge(declaration, parameter);
|
| + if (parameter is DefaultFormalParameter) {
|
| + Expression defaultValue = parameter.defaultValue;
|
| + if (defaultValue != null) {
|
| + ReferenceFinder parameterReferenceFinder = new ReferenceFinder(parameter, referenceGraph, _variableDeclarationMap, constructorDeclarationMap);
|
| + defaultValue.accept(parameterReferenceFinder);
|
| + }
|
| + }
|
| + }
|
| + }
|
| + for (InstanceCreationExpression expression in _constructorInvocations) {
|
| + referenceGraph.addNode(expression);
|
| + ConstructorElement constructor = expression.staticElement;
|
| + if (constructor == null) {
|
| + break;
|
| + }
|
| + constructor = _followConstantRedirectionChain(constructor);
|
| + ConstructorDeclaration declaration = findConstructorDeclaration(constructor);
|
| + // An instance creation expression depends both on the constructor and the arguments passed
|
| + // to it.
|
| + ReferenceFinder referenceFinder = new ReferenceFinder(expression, referenceGraph, _variableDeclarationMap, constructorDeclarationMap);
|
| + if (declaration != null) {
|
| + referenceGraph.addEdge(expression, declaration);
|
| + }
|
| + expression.argumentList.accept(referenceFinder);
|
| + }
|
| + List<List<AstNode>> topologicalSort = referenceGraph.computeTopologicalSort();
|
| + for (List<AstNode> constantsInCycle in topologicalSort) {
|
| + if (constantsInCycle.length == 1) {
|
| + _computeValueFor(constantsInCycle[0]);
|
| + } else {
|
| + for (AstNode constant in constantsInCycle) {
|
| + _generateCycleError(constantsInCycle, constant);
|
| + }
|
| + }
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * This method is called just before computing the constant value associated with an AST node.
|
| + * Unit tests will override this method to introduce additional error checking.
|
| + */
|
| + void beforeComputeValue(AstNode constNode) {
|
| + }
|
| +
|
| + /**
|
| + * This method is called just before getting the constant initializers associated with a
|
| + * constructor AST node. Unit tests will override this method to introduce additional error
|
| + * checking.
|
| + */
|
| + void beforeGetConstantInitializers(ConstructorElement constructor) {
|
| + }
|
| +
|
| + /**
|
| + * This method is called just before getting a parameter's default value. Unit tests will override
|
| + * this method to introduce additional error checking.
|
| + */
|
| + void beforeGetParameterDefault(ParameterElement parameter) {
|
| + }
|
| +
|
| + /**
|
| + * Create the ConstantVisitor used to evaluate constants. Unit tests will override this method to
|
| + * introduce additional error checking.
|
| + */
|
| + ConstantVisitor createConstantVisitor() => new ConstantVisitor.con1(typeProvider);
|
| +
|
| + ConstructorDeclaration findConstructorDeclaration(ConstructorElement constructor) => constructorDeclarationMap[_getConstructorBase(constructor)];
|
| +
|
| + /**
|
| + * Check that the arguments to a call to fromEnvironment() are correct.
|
| + *
|
| + * @param arguments the AST nodes of the arguments.
|
| + * @param argumentValues the values of the unnamed arguments.
|
| + * @param namedArgumentValues the values of the named arguments.
|
| + * @param expectedDefaultValueType the allowed type of the "defaultValue" parameter (if present).
|
| + * Note: "defaultValue" is always allowed to be null.
|
| + * @return true if the arguments are correct, false if there is an error.
|
| + */
|
| + bool _checkFromEnvironmentArguments(NodeList<Expression> arguments, List<DartObjectImpl> argumentValues, HashMap<String, DartObjectImpl> namedArgumentValues, InterfaceType expectedDefaultValueType) {
|
| + int argumentCount = arguments.length;
|
| + if (argumentCount < 1 || argumentCount > 2) {
|
| + return false;
|
| + }
|
| + if (arguments[0] is NamedExpression) {
|
| + return false;
|
| + }
|
| + if (!identical(argumentValues[0].type, typeProvider.stringType)) {
|
| + return false;
|
| + }
|
| + if (argumentCount == 2) {
|
| + if (arguments[1] is! NamedExpression) {
|
| + return false;
|
| + }
|
| + if (!((arguments[1] as NamedExpression).name.label.name == _DEFAULT_VALUE_PARAM)) {
|
| + return false;
|
| + }
|
| + InterfaceType defaultValueType = namedArgumentValues[_DEFAULT_VALUE_PARAM].type;
|
| + if (!(identical(defaultValueType, expectedDefaultValueType) || identical(defaultValueType, typeProvider.nullType))) {
|
| + return false;
|
| + }
|
| + }
|
| + return true;
|
| + }
|
| +
|
| + /**
|
| + * Check that the arguments to a call to Symbol() are correct.
|
| + *
|
| + * @param arguments the AST nodes of the arguments.
|
| + * @param argumentValues the values of the unnamed arguments.
|
| + * @param namedArgumentValues the values of the named arguments.
|
| + * @return true if the arguments are correct, false if there is an error.
|
| + */
|
| + bool _checkSymbolArguments(NodeList<Expression> arguments, List<DartObjectImpl> argumentValues, HashMap<String, DartObjectImpl> namedArgumentValues) {
|
| + if (arguments.length != 1) {
|
| + return false;
|
| + }
|
| + if (arguments[0] is NamedExpression) {
|
| + return false;
|
| + }
|
| + if (!identical(argumentValues[0].type, typeProvider.stringType)) {
|
| + return false;
|
| + }
|
| + String name = argumentValues[0].stringValue;
|
| + return isValidPublicSymbol(name);
|
| + }
|
| +
|
| + /**
|
| + * Compute a value for the given constant.
|
| + *
|
| + * @param constNode the constant for which a value is to be computed
|
| + */
|
| + void _computeValueFor(AstNode constNode) {
|
| + beforeComputeValue(constNode);
|
| + if (constNode is VariableDeclaration) {
|
| + VariableDeclaration declaration = constNode;
|
| + Element element = declaration.element;
|
| + EvaluationResultImpl result = declaration.initializer.accept(createConstantVisitor());
|
| + (element as VariableElementImpl).evaluationResult = result;
|
| + } else if (constNode is InstanceCreationExpression) {
|
| + InstanceCreationExpression expression = constNode;
|
| + ConstructorElement constructor = expression.staticElement;
|
| + if (constructor == null) {
|
| + // Couldn't resolve the constructor so we can't compute a value. No problem--the error
|
| + // has already been reported.
|
| + return;
|
| + }
|
| + ConstantVisitor constantVisitor = createConstantVisitor();
|
| + EvaluationResultImpl result = _evaluateConstructorCall(constNode, expression.argumentList.arguments, constructor, constantVisitor);
|
| + expression.evaluationResult = result;
|
| + } else if (constNode is ConstructorDeclaration) {
|
| + ConstructorDeclaration declaration = constNode;
|
| + NodeList<ConstructorInitializer> initializers = declaration.initializers;
|
| + ConstructorElementImpl constructor = declaration.element as ConstructorElementImpl;
|
| + constructor.constantInitializers = new ConstantValueComputer_InitializerCloner().cloneNodeList(initializers);
|
| + } else if (constNode is FormalParameter) {
|
| + if (constNode is DefaultFormalParameter) {
|
| + DefaultFormalParameter parameter = constNode;
|
| + ParameterElement element = parameter.element;
|
| + Expression defaultValue = parameter.defaultValue;
|
| + if (defaultValue != null) {
|
| + EvaluationResultImpl result = defaultValue.accept(createConstantVisitor());
|
| + (element as ParameterElementImpl).evaluationResult = result;
|
| + }
|
| + }
|
| + } else {
|
| + // Should not happen.
|
| + AnalysisEngine.instance.logger.logError("Constant value computer trying to compute the value of a node which is not a VariableDeclaration, InstanceCreationExpression, FormalParameter, or ConstructorDeclaration");
|
| + return;
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Evaluate a call to fromEnvironment() on the bool, int, or String class.
|
| + *
|
| + * @param environmentValue Value fetched from the environment
|
| + * @param builtInDefaultValue Value that should be used as the default if no "defaultValue"
|
| + * argument appears in [namedArgumentValues].
|
| + * @param namedArgumentValues Named parameters passed to fromEnvironment()
|
| + * @return A [ValidResult] object corresponding to the evaluated result
|
| + */
|
| + ValidResult _computeValueFromEnvironment(DartObject environmentValue, DartObjectImpl builtInDefaultValue, HashMap<String, DartObjectImpl> namedArgumentValues) {
|
| + DartObjectImpl value = environmentValue as DartObjectImpl;
|
| + if (value.isUnknown || value.isNull) {
|
| + // The name either doesn't exist in the environment or we couldn't parse the corresponding
|
| + // value. If the code supplied an explicit default, use it.
|
| + if (namedArgumentValues.containsKey(_DEFAULT_VALUE_PARAM)) {
|
| + value = namedArgumentValues[_DEFAULT_VALUE_PARAM];
|
| + } else if (value.isNull) {
|
| + // The code didn't supply an explicit default. The name exists in the environment but
|
| + // we couldn't parse the corresponding value. So use the built-in default value, because
|
| + // this is what the VM does.
|
| + value = builtInDefaultValue;
|
| + } else {
|
| + }
|
| + }
|
| + return new ValidResult(value);
|
| + }
|
| +
|
| + EvaluationResultImpl _evaluateConstructorCall(AstNode node, NodeList<Expression> arguments, ConstructorElement constructor, ConstantVisitor constantVisitor) {
|
| + int argumentCount = arguments.length;
|
| + List<DartObjectImpl> argumentValues = new List<DartObjectImpl>(argumentCount);
|
| + HashMap<String, DartObjectImpl> namedArgumentValues = new HashMap<String, DartObjectImpl>();
|
| + for (int i = 0; i < argumentCount; i++) {
|
| + Expression argument = arguments[i];
|
| + if (argument is NamedExpression) {
|
| + NamedExpression namedExpression = argument;
|
| + String name = namedExpression.name.label.name;
|
| + namedArgumentValues[name] = constantVisitor._valueOf(namedExpression.expression);
|
| + argumentValues[i] = constantVisitor.null2;
|
| + } else {
|
| + argumentValues[i] = constantVisitor._valueOf(argument);
|
| + }
|
| + }
|
| + constructor = _followConstantRedirectionChain(constructor);
|
| + InterfaceType definingClass = constructor.returnType as InterfaceType;
|
| + if (constructor.isFactory) {
|
| + // We couldn't find a non-factory constructor. See if it's because we reached an external
|
| + // const factory constructor that we can emulate.
|
| + if (constructor.name == "fromEnvironment") {
|
| + if (!_checkFromEnvironmentArguments(arguments, argumentValues, namedArgumentValues, definingClass)) {
|
| + return new ErrorResult.con1(node, CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| + String variableName = argumentCount < 1 ? null : argumentValues[0].stringValue;
|
| + if (identical(definingClass, typeProvider.boolType)) {
|
| + DartObject valueFromEnvironment;
|
| + valueFromEnvironment = _declaredVariables.getBool(typeProvider, variableName);
|
| + return _computeValueFromEnvironment(valueFromEnvironment, new DartObjectImpl(typeProvider.boolType, BoolState.FALSE_STATE), namedArgumentValues);
|
| + } else if (identical(definingClass, typeProvider.intType)) {
|
| + DartObject valueFromEnvironment;
|
| + valueFromEnvironment = _declaredVariables.getInt(typeProvider, variableName);
|
| + return _computeValueFromEnvironment(valueFromEnvironment, new DartObjectImpl(typeProvider.nullType, NullState.NULL_STATE), namedArgumentValues);
|
| + } else if (identical(definingClass, typeProvider.stringType)) {
|
| + DartObject valueFromEnvironment;
|
| + valueFromEnvironment = _declaredVariables.getString(typeProvider, variableName);
|
| + return _computeValueFromEnvironment(valueFromEnvironment, new DartObjectImpl(typeProvider.nullType, NullState.NULL_STATE), namedArgumentValues);
|
| + }
|
| + } else if (constructor.name == "" && identical(definingClass, typeProvider.symbolType) && argumentCount == 1) {
|
| + if (!_checkSymbolArguments(arguments, argumentValues, namedArgumentValues)) {
|
| + return new ErrorResult.con1(node, CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| + String argumentValue = argumentValues[0].stringValue;
|
| + return constantVisitor._valid(definingClass, new SymbolState(argumentValue));
|
| + }
|
| + // Either it's an external const factory constructor that we can't emulate, or an error
|
| + // occurred (a cycle, or a const constructor trying to delegate to a non-const constructor).
|
| + // In the former case, the best we can do is consider it an unknown value. In the latter
|
| + // case, the error has already been reported, so considering it an unknown value will
|
| + // suppress further errors.
|
| + return constantVisitor._validWithUnknownValue(definingClass);
|
| + }
|
| + beforeGetConstantInitializers(constructor);
|
| + ConstructorElementImpl constructorBase = _getConstructorBase(constructor) as ConstructorElementImpl;
|
| + List<ConstructorInitializer> initializers = constructorBase.constantInitializers;
|
| + if (initializers == null) {
|
| + // This can happen in some cases where there are compile errors in the code being analyzed
|
| + // (for example if the code is trying to create a const instance using a non-const
|
| + // constructor, or the node we're visiting is involved in a cycle). The error has already
|
| + // been reported, so consider it an unknown value to suppress further errors.
|
| + return constantVisitor._validWithUnknownValue(definingClass);
|
| + }
|
| + HashMap<String, DartObjectImpl> fieldMap = new HashMap<String, DartObjectImpl>();
|
| + HashMap<String, DartObjectImpl> parameterMap = new HashMap<String, DartObjectImpl>();
|
| + List<ParameterElement> parameters = constructorBase.parameters;
|
| + int parameterCount = parameters.length;
|
| + for (int i = 0; i < parameterCount; i++) {
|
| + ParameterElement parameter = parameters[i];
|
| + while (parameter is ParameterMember) {
|
| + parameter = (parameter as ParameterMember).baseElement;
|
| + }
|
| + DartObjectImpl argumentValue = null;
|
| + if (parameter.parameterKind == ParameterKind.NAMED) {
|
| + argumentValue = namedArgumentValues[parameter.name];
|
| + } else if (i < argumentCount) {
|
| + argumentValue = argumentValues[i];
|
| + }
|
| + if (argumentValue == null && parameter is ParameterElementImpl) {
|
| + // The parameter is an optional positional parameter for which no value was provided, so
|
| + // use the default value.
|
| + beforeGetParameterDefault(parameter);
|
| + EvaluationResultImpl evaluationResult = (parameter as ParameterElementImpl).evaluationResult;
|
| + if (evaluationResult is ValidResult) {
|
| + argumentValue = evaluationResult.value;
|
| + } else if (evaluationResult == null) {
|
| + // No default was provided, so the default value is null.
|
| + argumentValue = constantVisitor.null2;
|
| + }
|
| + }
|
| + if (argumentValue != null) {
|
| + if (parameter.isInitializingFormal) {
|
| + FieldElement field = (parameter as FieldFormalParameterElement).field;
|
| + if (field != null) {
|
| + String fieldName = field.name;
|
| + fieldMap[fieldName] = argumentValue;
|
| + }
|
| + } else {
|
| + String name = parameter.name;
|
| + parameterMap[name] = argumentValue;
|
| + }
|
| + }
|
| + }
|
| + ConstantVisitor initializerVisitor = new ConstantVisitor.con2(typeProvider, parameterMap);
|
| + String superName = null;
|
| + NodeList<Expression> superArguments = null;
|
| + for (ConstructorInitializer initializer in initializers) {
|
| + if (initializer is ConstructorFieldInitializer) {
|
| + ConstructorFieldInitializer constructorFieldInitializer = initializer;
|
| + Expression initializerExpression = constructorFieldInitializer.expression;
|
| + EvaluationResultImpl evaluationResult = initializerExpression.accept(initializerVisitor);
|
| + if (evaluationResult is ValidResult) {
|
| + DartObjectImpl value = evaluationResult.value;
|
| + String fieldName = constructorFieldInitializer.fieldName.name;
|
| + fieldMap[fieldName] = value;
|
| + }
|
| + } else if (initializer is SuperConstructorInvocation) {
|
| + SuperConstructorInvocation superConstructorInvocation = initializer;
|
| + SimpleIdentifier name = superConstructorInvocation.constructorName;
|
| + if (name != null) {
|
| + superName = name.name;
|
| + }
|
| + superArguments = superConstructorInvocation.argumentList.arguments;
|
| + }
|
| + }
|
| + // Evaluate explicit or implicit call to super().
|
| + InterfaceType superclass = definingClass.superclass;
|
| + if (superclass != null && !superclass.isObject) {
|
| + ConstructorElement superConstructor = superclass.lookUpConstructor(superName, constructor.library);
|
| + if (superConstructor != null) {
|
| + if (superArguments == null) {
|
| + superArguments = new NodeList<Expression>(null);
|
| + }
|
| + _evaluateSuperConstructorCall(node, fieldMap, superConstructor, superArguments, initializerVisitor);
|
| + }
|
| + }
|
| + return constantVisitor._valid(definingClass, new GenericState(fieldMap));
|
| + }
|
| +
|
| + void _evaluateSuperConstructorCall(AstNode node, HashMap<String, DartObjectImpl> fieldMap, ConstructorElement superConstructor, NodeList<Expression> superArguments, ConstantVisitor initializerVisitor) {
|
| + if (superConstructor != null && superConstructor.isConst) {
|
| + EvaluationResultImpl evaluationResult = _evaluateConstructorCall(node, superArguments, superConstructor, initializerVisitor);
|
| + if (evaluationResult is ValidResult) {
|
| + ValidResult validResult = evaluationResult;
|
| + fieldMap[GenericState.SUPERCLASS_FIELD] = validResult.value;
|
| + }
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Attempt to follow the chain of factory redirections until a constructor is reached which is not
|
| + * a const factory constructor.
|
| + *
|
| + * @return the constant constructor which terminates the chain of factory redirections, if the
|
| + * chain terminates. If there is a problem (e.g. a redirection can't be found, or a cycle
|
| + * is encountered), the chain will be followed as far as possible and then a const factory
|
| + * constructor will be returned.
|
| + */
|
| + ConstructorElement _followConstantRedirectionChain(ConstructorElement constructor) {
|
| + HashSet<ConstructorElement> constructorsVisited = new HashSet<ConstructorElement>();
|
| + while (constructor.isFactory) {
|
| + if (identical(constructor.enclosingElement.type, typeProvider.symbolType)) {
|
| + // The dart:core.Symbol has a const factory constructor that redirects to
|
| + // dart:_internal.Symbol. That in turn redirects to an external const constructor, which
|
| + // we won't be able to evaluate. So stop following the chain of redirections at
|
| + // dart:core.Symbol, and let [evaluateInstanceCreationExpression] handle it specially.
|
| + break;
|
| + }
|
| + constructorsVisited.add(constructor);
|
| + ConstructorElement redirectedConstructor = constructor.redirectedConstructor;
|
| + if (redirectedConstructor == null) {
|
| + // This can happen if constructor is an external factory constructor.
|
| + break;
|
| + }
|
| + if (!redirectedConstructor.isConst) {
|
| + // Delegating to a non-const constructor--this is not allowed (and
|
| + // is checked elsewhere--see [ErrorVerifier.checkForRedirectToNonConstConstructor()]).
|
| + break;
|
| + }
|
| + if (constructorsVisited.contains(redirectedConstructor)) {
|
| + // Cycle in redirecting factory constructors--this is not allowed
|
| + // and is checked elsewhere--see [ErrorVerifier.checkForRecursiveFactoryRedirect()]).
|
| + break;
|
| + }
|
| + constructor = redirectedConstructor;
|
| + }
|
| + return constructor;
|
| + }
|
| +
|
| + /**
|
| + * Generate an error indicating that the given constant is not a valid compile-time constant
|
| + * because it references at least one of the constants in the given cycle, each of which directly
|
| + * or indirectly references the constant.
|
| + *
|
| + * @param constantsInCycle the constants in the cycle that includes the given constant
|
| + * @param constant the constant that is not a valid compile-time constant
|
| + */
|
| + void _generateCycleError(List<AstNode> constantsInCycle, AstNode constant) {
|
| + }
|
| +
|
| + ConstructorElement _getConstructorBase(ConstructorElement constructor) {
|
| + while (constructor is ConstructorMember) {
|
| + constructor = (constructor as ConstructorMember).baseElement;
|
| + }
|
| + return constructor;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * [AstCloner] that copies the necessary information from the AST to allow const constructor
|
| + * initializers to be evaluated.
|
| + */
|
| +class ConstantValueComputer_InitializerCloner extends AstCloner {
|
| + @override
|
| + InstanceCreationExpression visitInstanceCreationExpression(InstanceCreationExpression node) {
|
| + // All we need is the evaluation result, and the keyword so that we know whether it's const.
|
| + InstanceCreationExpression expression = new InstanceCreationExpression(node.keyword, null, null);
|
| + expression.evaluationResult = node.evaluationResult;
|
| + return expression;
|
| + }
|
| +
|
| + @override
|
| + SimpleIdentifier visitSimpleIdentifier(SimpleIdentifier node) {
|
| + SimpleIdentifier identifier = super.visitSimpleIdentifier(node);
|
| + identifier.staticElement = node.staticElement;
|
| + return identifier;
|
| + }
|
| +
|
| + @override
|
| + SuperConstructorInvocation visitSuperConstructorInvocation(SuperConstructorInvocation node) {
|
| + SuperConstructorInvocation invocation = super.visitSuperConstructorInvocation(node);
|
| + invocation.staticElement = node.staticElement;
|
| + return invocation;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `ConstantVisitor` evaluate constant expressions to produce their
|
| + * compile-time value. According to the Dart Language Specification: <blockquote> A constant
|
| + * expression is one of the following:
|
| + * * A literal number.
|
| + * * A literal boolean.
|
| + * * A literal string where any interpolated expression is a compile-time constant that evaluates
|
| + * to a numeric, string or boolean value or to <b>null</b>.
|
| + * * A literal symbol.
|
| + * * <b>null</b>.
|
| + * * A qualified reference to a static constant variable.
|
| + * * An identifier expression that denotes a constant variable, class or type alias.
|
| + * * A constant constructor invocation.
|
| + * * A constant list literal.
|
| + * * A constant map literal.
|
| + * * A simple or qualified identifier denoting a top-level function or a static method.
|
| + * * A parenthesized expression <i>(e)</i> where <i>e</i> is a constant expression.
|
| + * * An expression of the form <i>identical(e<sub>1</sub>, e<sub>2</sub>)</i> where
|
| + * <i>e<sub>1</sub></i> and <i>e<sub>2</sub></i> are constant expressions and <i>identical()</i> is
|
| + * statically bound to the predefined dart function <i>identical()</i> discussed above.
|
| + * * An expression of one of the forms <i>e<sub>1</sub> == e<sub>2</sub></i> or <i>e<sub>1</sub>
|
| + * != e<sub>2</sub></i> where <i>e<sub>1</sub></i> and <i>e<sub>2</sub></i> are constant expressions
|
| + * that evaluate to a numeric, string or boolean value.
|
| + * * An expression of one of the forms <i>!e</i>, <i>e<sub>1</sub> && e<sub>2</sub></i> or
|
| + * <i>e<sub>1</sub> || e<sub>2</sub></i>, where <i>e</i>, <i>e1</sub></i> and <i>e2</sub></i> are
|
| + * constant expressions that evaluate to a boolean value.
|
| + * * An expression of one of the forms <i>~e</i>, <i>e<sub>1</sub> ^ e<sub>2</sub></i>,
|
| + * <i>e<sub>1</sub> & e<sub>2</sub></i>, <i>e<sub>1</sub> | e<sub>2</sub></i>, <i>e<sub>1</sub>
|
| + * >> e<sub>2</sub></i> or <i>e<sub>1</sub> << e<sub>2</sub></i>, where <i>e</i>,
|
| + * <i>e<sub>1</sub></i> and <i>e<sub>2</sub></i> are constant expressions that evaluate to an
|
| + * integer value or to <b>null</b>.
|
| + * * An expression of one of the forms <i>-e</i>, <i>e<sub>1</sub> + e<sub>2</sub></i>,
|
| + * <i>e<sub>1</sub> - e<sub>2</sub></i>, <i>e<sub>1</sub> * e<sub>2</sub></i>, <i>e<sub>1</sub> /
|
| + * e<sub>2</sub></i>, <i>e<sub>1</sub> ~/ e<sub>2</sub></i>, <i>e<sub>1</sub> >
|
| + * e<sub>2</sub></i>, <i>e<sub>1</sub> < e<sub>2</sub></i>, <i>e<sub>1</sub> >=
|
| + * e<sub>2</sub></i>, <i>e<sub>1</sub> <= e<sub>2</sub></i> or <i>e<sub>1</sub> %
|
| + * e<sub>2</sub></i>, where <i>e</i>, <i>e<sub>1</sub></i> and <i>e<sub>2</sub></i> are constant
|
| + * expressions that evaluate to a numeric value or to <b>null</b>.
|
| + * * An expression of the form <i>e<sub>1</sub> ? e<sub>2</sub> : e<sub>3</sub></i> where
|
| + * <i>e<sub>1</sub></i>, <i>e<sub>2</sub></i> and <i>e<sub>3</sub></i> are constant expressions, and
|
| + * <i>e<sub>1</sub></i> evaluates to a boolean value.
|
| + * </blockquote>
|
| + */
|
| +class ConstantVisitor extends UnifyingAstVisitor<EvaluationResultImpl> {
|
| + /**
|
| + * The type provider used to access the known types.
|
| + */
|
| + final TypeProvider _typeProvider;
|
| +
|
| + /**
|
| + * An shared object representing the value 'null'.
|
| + */
|
| + DartObjectImpl _nullObject;
|
| +
|
| + HashMap<String, DartObjectImpl> _lexicalEnvironment;
|
| +
|
| + /**
|
| + * Initialize a newly created constant visitor.
|
| + *
|
| + * @param typeProvider the type provider used to access known types
|
| + * @param lexicalEnvironment values which should override simpleIdentifiers, or null if no
|
| + * overriding is necessary.
|
| + */
|
| + ConstantVisitor.con1(this._typeProvider) {
|
| + this._lexicalEnvironment = null;
|
| + }
|
| +
|
| + /**
|
| + * Initialize a newly created constant visitor.
|
| + *
|
| + * @param typeProvider the type provider used to access known types
|
| + * @param lexicalEnvironment values which should override simpleIdentifiers, or null if no
|
| + * overriding is necessary.
|
| + */
|
| + ConstantVisitor.con2(this._typeProvider, HashMap<String, DartObjectImpl> lexicalEnvironment) {
|
| + this._lexicalEnvironment = lexicalEnvironment;
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitAdjacentStrings(AdjacentStrings node) {
|
| + EvaluationResultImpl result = null;
|
| + for (StringLiteral string in node.strings) {
|
| + if (result == null) {
|
| + result = string.accept(this);
|
| + } else {
|
| + result = result.concatenate(_typeProvider, node, string.accept(this));
|
| + }
|
| + }
|
| + return result;
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitBinaryExpression(BinaryExpression node) {
|
| + EvaluationResultImpl leftResult = node.leftOperand.accept(this);
|
| + EvaluationResultImpl rightResult = node.rightOperand.accept(this);
|
| + TokenType operatorType = node.operator.type;
|
| + // 'null' is almost never good operand
|
| + if (operatorType != TokenType.BANG_EQ && operatorType != TokenType.EQ_EQ) {
|
| + if (leftResult is ValidResult && leftResult.isNull || rightResult is ValidResult && rightResult.isNull) {
|
| + return _error(node, CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| + }
|
| + // evaluate operator
|
| + while (true) {
|
| + if (operatorType == TokenType.AMPERSAND) {
|
| + return leftResult.bitAnd(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.AMPERSAND_AMPERSAND) {
|
| + return leftResult.logicalAnd(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.BANG_EQ) {
|
| + return leftResult.notEqual(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.BAR) {
|
| + return leftResult.bitOr(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.BAR_BAR) {
|
| + return leftResult.logicalOr(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.CARET) {
|
| + return leftResult.bitXor(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.EQ_EQ) {
|
| + return leftResult.equalEqual(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.GT) {
|
| + return leftResult.greaterThan(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.GT_EQ) {
|
| + return leftResult.greaterThanOrEqual(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.GT_GT) {
|
| + return leftResult.shiftRight(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.LT) {
|
| + return leftResult.lessThan(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.LT_EQ) {
|
| + return leftResult.lessThanOrEqual(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.LT_LT) {
|
| + return leftResult.shiftLeft(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.MINUS) {
|
| + return leftResult.minus(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.PERCENT) {
|
| + return leftResult.remainder(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.PLUS) {
|
| + return leftResult.add(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.STAR) {
|
| + return leftResult.times(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.SLASH) {
|
| + return leftResult.divide(_typeProvider, node, rightResult);
|
| + } else if (operatorType == TokenType.TILDE_SLASH) {
|
| + return leftResult.integerDivide(_typeProvider, node, rightResult);
|
| + } else {
|
| + // TODO(brianwilkerson) Figure out which error to report.
|
| + return _error(node, null);
|
| + }
|
| + break;
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitBooleanLiteral(BooleanLiteral node) => _valid(_typeProvider.boolType, BoolState.from(node.value));
|
| +
|
| + @override
|
| + EvaluationResultImpl visitConditionalExpression(ConditionalExpression node) {
|
| + Expression condition = node.condition;
|
| + EvaluationResultImpl conditionResult = condition.accept(this);
|
| + EvaluationResultImpl thenResult = node.thenExpression.accept(this);
|
| + EvaluationResultImpl elseResult = node.elseExpression.accept(this);
|
| + if (conditionResult is ErrorResult) {
|
| + return _union(_union(conditionResult as ErrorResult, thenResult), elseResult);
|
| + } else if (!(conditionResult as ValidResult).isBool) {
|
| + return new ErrorResult.con1(condition, CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL);
|
| + } else if (thenResult is ErrorResult) {
|
| + return _union(thenResult, elseResult);
|
| + } else if (elseResult is ErrorResult) {
|
| + return elseResult;
|
| + }
|
| + conditionResult = conditionResult.applyBooleanConversion(_typeProvider, condition);
|
| + if (conditionResult is ErrorResult) {
|
| + return conditionResult;
|
| + }
|
| + ValidResult validResult = conditionResult as ValidResult;
|
| + if (validResult.isTrue) {
|
| + return thenResult;
|
| + } else if (validResult.isFalse) {
|
| + return elseResult;
|
| + }
|
| + InterfaceType thenType = (thenResult as ValidResult).value.type;
|
| + InterfaceType elseType = (elseResult as ValidResult).value.type;
|
| + return _validWithUnknownValue(thenType.getLeastUpperBound(elseType) as InterfaceType);
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitDoubleLiteral(DoubleLiteral node) => _valid(_typeProvider.doubleType, new DoubleState(node.value));
|
| +
|
| + @override
|
| + EvaluationResultImpl visitInstanceCreationExpression(InstanceCreationExpression node) {
|
| + if (!node.isConst) {
|
| + // TODO(brianwilkerson) Figure out which error to report.
|
| + return _error(node, null);
|
| + }
|
| + beforeGetEvaluationResult(node);
|
| + EvaluationResultImpl result = node.evaluationResult;
|
| + if (result != null) {
|
| + return result;
|
| + }
|
| + // TODO(brianwilkerson) Figure out which error to report.
|
| + return _error(node, null);
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitIntegerLiteral(IntegerLiteral node) => _valid(_typeProvider.intType, new IntState(node.value));
|
| +
|
| + @override
|
| + EvaluationResultImpl visitInterpolationExpression(InterpolationExpression node) {
|
| + EvaluationResultImpl result = node.expression.accept(this);
|
| + if (result is ValidResult && !result.isBoolNumStringOrNull) {
|
| + return _error(node, CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_NUM_STRING);
|
| + }
|
| + return result.performToString(_typeProvider, node);
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitInterpolationString(InterpolationString node) => _valid(_typeProvider.stringType, new StringState(node.value));
|
| +
|
| + @override
|
| + EvaluationResultImpl visitListLiteral(ListLiteral node) {
|
| + if (node.constKeyword == null) {
|
| + return new ErrorResult.con1(node, CompileTimeErrorCode.MISSING_CONST_IN_LIST_LITERAL);
|
| + }
|
| + ErrorResult result = null;
|
| + List<DartObjectImpl> elements = new List<DartObjectImpl>();
|
| + for (Expression element in node.elements) {
|
| + EvaluationResultImpl elementResult = element.accept(this);
|
| + result = _union(result, elementResult);
|
| + if (elementResult is ValidResult) {
|
| + elements.add(elementResult.value);
|
| + }
|
| + }
|
| + if (result != null) {
|
| + return result;
|
| + }
|
| + return _valid(_typeProvider.listType, new ListState(new List.from(elements)));
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitMapLiteral(MapLiteral node) {
|
| + if (node.constKeyword == null) {
|
| + return new ErrorResult.con1(node, CompileTimeErrorCode.MISSING_CONST_IN_MAP_LITERAL);
|
| + }
|
| + ErrorResult result = null;
|
| + HashMap<DartObjectImpl, DartObjectImpl> map = new HashMap<DartObjectImpl, DartObjectImpl>();
|
| + for (MapLiteralEntry entry in node.entries) {
|
| + EvaluationResultImpl keyResult = entry.key.accept(this);
|
| + EvaluationResultImpl valueResult = entry.value.accept(this);
|
| + result = _union(result, keyResult);
|
| + result = _union(result, valueResult);
|
| + if (keyResult is ValidResult && valueResult is ValidResult) {
|
| + map[keyResult.value] = valueResult.value;
|
| + }
|
| + }
|
| + if (result != null) {
|
| + return result;
|
| + }
|
| + return _valid(_typeProvider.mapType, new MapState(map));
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitMethodInvocation(MethodInvocation node) {
|
| + Element element = node.methodName.staticElement;
|
| + if (element is FunctionElement) {
|
| + FunctionElement function = element;
|
| + if (function.name == "identical") {
|
| + NodeList<Expression> arguments = node.argumentList.arguments;
|
| + if (arguments.length == 2) {
|
| + Element enclosingElement = function.enclosingElement;
|
| + if (enclosingElement is CompilationUnitElement) {
|
| + LibraryElement library = enclosingElement.library;
|
| + if (library.isDartCore) {
|
| + EvaluationResultImpl leftArgument = arguments[0].accept(this);
|
| + EvaluationResultImpl rightArgument = arguments[1].accept(this);
|
| + return leftArgument.equalEqual(_typeProvider, node, rightArgument);
|
| + }
|
| + }
|
| + }
|
| + }
|
| + }
|
| + // TODO(brianwilkerson) Figure out which error to report.
|
| + return _error(node, null);
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitNamedExpression(NamedExpression node) => node.expression.accept(this);
|
| +
|
| + @override
|
| + EvaluationResultImpl visitNode(AstNode node) => _error(node, null);
|
| +
|
| + @override
|
| + EvaluationResultImpl visitNullLiteral(NullLiteral node) => new ValidResult(null2);
|
| +
|
| + @override
|
| + EvaluationResultImpl visitParenthesizedExpression(ParenthesizedExpression node) => node.expression.accept(this);
|
| +
|
| + @override
|
| + EvaluationResultImpl visitPrefixedIdentifier(PrefixedIdentifier node) {
|
| + // validate prefix
|
| + SimpleIdentifier prefixNode = node.prefix;
|
| + Element prefixElement = prefixNode.staticElement;
|
| + if (prefixElement is! PrefixElement) {
|
| + EvaluationResultImpl prefixResult = prefixNode.accept(this);
|
| + if (prefixResult is! ValidResult) {
|
| + return _error(node, null);
|
| + }
|
| + }
|
| + // validate prefixed identifier
|
| + return _getConstantValue(node, node.staticElement);
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitPrefixExpression(PrefixExpression node) {
|
| + EvaluationResultImpl operand = node.operand.accept(this);
|
| + if (operand is ValidResult && operand.isNull) {
|
| + return _error(node, CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| + while (true) {
|
| + if (node.operator.type == TokenType.BANG) {
|
| + return operand.logicalNot(_typeProvider, node);
|
| + } else if (node.operator.type == TokenType.TILDE) {
|
| + return operand.bitNot(_typeProvider, node);
|
| + } else if (node.operator.type == TokenType.MINUS) {
|
| + return operand.negated(_typeProvider, node);
|
| + } else {
|
| + // TODO(brianwilkerson) Figure out which error to report.
|
| + return _error(node, null);
|
| + }
|
| + break;
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitPropertyAccess(PropertyAccess node) => _getConstantValue(node, node.propertyName.staticElement);
|
| +
|
| + @override
|
| + EvaluationResultImpl visitSimpleIdentifier(SimpleIdentifier node) {
|
| + if (_lexicalEnvironment != null && _lexicalEnvironment.containsKey(node.name)) {
|
| + return new ValidResult(_lexicalEnvironment[node.name]);
|
| + }
|
| + return _getConstantValue(node, node.staticElement);
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitSimpleStringLiteral(SimpleStringLiteral node) => _valid(_typeProvider.stringType, new StringState(node.value));
|
| +
|
| + @override
|
| + EvaluationResultImpl visitStringInterpolation(StringInterpolation node) {
|
| + EvaluationResultImpl result = null;
|
| + for (InterpolationElement element in node.elements) {
|
| + if (result == null) {
|
| + result = element.accept(this);
|
| + } else {
|
| + result = result.concatenate(_typeProvider, node, element.accept(this));
|
| + }
|
| + }
|
| + return result;
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl visitSymbolLiteral(SymbolLiteral node) {
|
| + JavaStringBuilder builder = new JavaStringBuilder();
|
| + List<Token> components = node.components;
|
| + for (int i = 0; i < components.length; i++) {
|
| + if (i > 0) {
|
| + builder.appendChar(0x2E);
|
| + }
|
| + builder.append(components[i].lexeme);
|
| + }
|
| + return _valid(_typeProvider.symbolType, new SymbolState(builder.toString()));
|
| + }
|
| +
|
| + /**
|
| + * This method is called just before retrieving an evaluation result from an AST node. Unit tests
|
| + * will override it to introduce additional error checking.
|
| + */
|
| + void beforeGetEvaluationResult(AstNode node) {
|
| + }
|
| +
|
| + /**
|
| + * Return an object representing the value 'null'.
|
| + *
|
| + * @return an object representing the value 'null'
|
| + */
|
| + DartObjectImpl get null2 {
|
| + if (_nullObject == null) {
|
| + _nullObject = new DartObjectImpl(_typeProvider.nullType, NullState.NULL_STATE);
|
| + }
|
| + return _nullObject;
|
| + }
|
| +
|
| + ValidResult _valid(InterfaceType type, InstanceState state) => new ValidResult(new DartObjectImpl(type, state));
|
| +
|
| + ValidResult _validWithUnknownValue(InterfaceType type) {
|
| + if (type.element.library.isDartCore) {
|
| + String typeName = type.name;
|
| + if (typeName == "bool") {
|
| + return _valid(type, BoolState.UNKNOWN_VALUE);
|
| + } else if (typeName == "double") {
|
| + return _valid(type, DoubleState.UNKNOWN_VALUE);
|
| + } else if (typeName == "int") {
|
| + return _valid(type, IntState.UNKNOWN_VALUE);
|
| + } else if (typeName == "String") {
|
| + return _valid(type, StringState.UNKNOWN_VALUE);
|
| + }
|
| + }
|
| + return _valid(type, GenericState.UNKNOWN_VALUE);
|
| + }
|
| +
|
| + /**
|
| + * Return the value of the given expression, or a representation of 'null' if the expression
|
| + * cannot be evaluated.
|
| + *
|
| + * @param expression the expression whose value is to be returned
|
| + * @return the value of the given expression
|
| + */
|
| + DartObjectImpl _valueOf(Expression expression) {
|
| + EvaluationResultImpl expressionValue = expression.accept(this);
|
| + if (expressionValue is ValidResult) {
|
| + return expressionValue.value;
|
| + }
|
| + return null2;
|
| + }
|
| +
|
| + /**
|
| + * Return a result object representing an error associated with the given node.
|
| + *
|
| + * @param node the AST node associated with the error
|
| + * @param code the error code indicating the nature of the error
|
| + * @return a result object representing an error associated with the given node
|
| + */
|
| + ErrorResult _error(AstNode node, ErrorCode code) => new ErrorResult.con1(node, code == null ? CompileTimeErrorCode.INVALID_CONSTANT : code);
|
| +
|
| + /**
|
| + * Return the constant value of the static constant represented by the given element.
|
| + *
|
| + * @param node the node to be used if an error needs to be reported
|
| + * @param element the element whose value is to be returned
|
| + * @return the constant value of the static constant
|
| + */
|
| + EvaluationResultImpl _getConstantValue(AstNode node, Element element) {
|
| + if (element is PropertyAccessorElement) {
|
| + element = (element as PropertyAccessorElement).variable;
|
| + }
|
| + if (element is VariableElementImpl) {
|
| + VariableElementImpl variableElementImpl = element;
|
| + beforeGetEvaluationResult(node);
|
| + EvaluationResultImpl value = variableElementImpl.evaluationResult;
|
| + if (variableElementImpl.isConst && value != null) {
|
| + return value;
|
| + }
|
| + } else if (element is ExecutableElement) {
|
| + ExecutableElement function = element;
|
| + if (function.isStatic) {
|
| + return _valid(_typeProvider.functionType, new FunctionState(function));
|
| + }
|
| + } else if (element is ClassElement || element is FunctionTypeAliasElement) {
|
| + return _valid(_typeProvider.typeType, new TypeState(element));
|
| + }
|
| + // TODO(brianwilkerson) Figure out which error to report.
|
| + return _error(node, null);
|
| + }
|
| +
|
| + /**
|
| + * Return the union of the errors encoded in the given results.
|
| + *
|
| + * @param leftResult the first set of errors, or `null` if there was no previous collection
|
| + * of errors
|
| + * @param rightResult the errors to be added to the collection, or a valid result if there are no
|
| + * errors to be added
|
| + * @return the union of the errors encoded in the given results
|
| + */
|
| + ErrorResult _union(ErrorResult leftResult, EvaluationResultImpl rightResult) {
|
| + if (rightResult is ErrorResult) {
|
| + if (leftResult != null) {
|
| + return new ErrorResult.con2(leftResult, rightResult);
|
| + } else {
|
| + return rightResult;
|
| + }
|
| + }
|
| + return leftResult;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * The interface `DartObject` defines the behavior of objects that represent the state of a
|
| + * Dart object.
|
| + */
|
| +abstract class DartObject {
|
| + /**
|
| + * Return the boolean value of this object, or `null` if either the value of this object is
|
| + * not known or this object is not of type 'bool'.
|
| + *
|
| + * @return the boolean value of this object
|
| + */
|
| + bool get boolValue;
|
| +
|
| + /**
|
| + * Return the floating point value of this object, or `null` if either the value of this
|
| + * object is not known or this object is not of type 'double'.
|
| + *
|
| + * @return the floating point value of this object
|
| + */
|
| + double get doubleValue;
|
| +
|
| + /**
|
| + * Return the integer value of this object, or `null` if either the value of this object is
|
| + * not known or this object is not of type 'int'.
|
| + *
|
| + * @return the integer value of this object
|
| + */
|
| + int get intValue;
|
| +
|
| + /**
|
| + * Return the string value of this object, or `null` if either the value of this object is
|
| + * not known or this object is not of type 'String'.
|
| + *
|
| + * @return the string value of this object
|
| + */
|
| + String get stringValue;
|
| +
|
| + /**
|
| + * Return the run-time type of this object.
|
| + *
|
| + * @return the run-time type of this object
|
| + */
|
| + InterfaceType get type;
|
| +
|
| + /**
|
| + * Return this object's value if it can be represented exactly, or `null` if either the
|
| + * value cannot be represented exactly or if the value is `null`. Clients should use
|
| + * [hasExactValue] to distinguish between these two cases.
|
| + *
|
| + * @return this object's value
|
| + */
|
| + Object get value;
|
| +
|
| + /**
|
| + * Return `true` if this object's value can be represented exactly.
|
| + *
|
| + * @return `true` if this object's value can be represented exactly
|
| + */
|
| + bool get hasExactValue;
|
| +
|
| + /**
|
| + * Return `true` if this object represents the value 'false'.
|
| + *
|
| + * @return `true` if this object represents the value 'false'
|
| + */
|
| + bool get isFalse;
|
| +
|
| + /**
|
| + * Return `true` if this object represents the value 'null'.
|
| + *
|
| + * @return `true` if this object represents the value 'null'
|
| + */
|
| + bool get isNull;
|
| +
|
| + /**
|
| + * Return `true` if this object represents the value 'true'.
|
| + *
|
| + * @return `true` if this object represents the value 'true'
|
| + */
|
| + bool get isTrue;
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `DartObjectImpl` represent an instance of a Dart class.
|
| + */
|
| +class DartObjectImpl implements DartObject {
|
| + /**
|
| + * The run-time type of this object.
|
| + */
|
| + final InterfaceType type;
|
| +
|
| + /**
|
| + * The state of the object.
|
| + */
|
| + final InstanceState _state;
|
| +
|
| + /**
|
| + * Initialize a newly created object to have the given type and state.
|
| + *
|
| + * @param type the run-time type of this object
|
| + * @param state the state of the object
|
| + */
|
| + DartObjectImpl(this.type, this._state);
|
| +
|
| + /**
|
| + * Return the result of invoking the '+' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '+' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl add(TypeProvider typeProvider, DartObjectImpl rightOperand) {
|
| + InstanceState result = _state.add(rightOperand._state);
|
| + if (result is IntState) {
|
| + return new DartObjectImpl(typeProvider.intType, result);
|
| + } else if (result is DoubleState) {
|
| + return new DartObjectImpl(typeProvider.doubleType, result);
|
| + } else if (result is NumState) {
|
| + return new DartObjectImpl(typeProvider.numType, result);
|
| + }
|
| + // We should never get here.
|
| + throw new IllegalStateException("add returned a ${result.runtimeType.toString()}");
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '&' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '&' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl bitAnd(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.intType, _state.bitAnd(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the '~' operator on this object.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @return the result of invoking the '~' operator on this object
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl bitNot(TypeProvider typeProvider) => new DartObjectImpl(typeProvider.intType, _state.bitNot());
|
| +
|
| + /**
|
| + * Return the result of invoking the '|' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '|' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl bitOr(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.intType, _state.bitOr(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the '^' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '^' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl bitXor(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.intType, _state.bitXor(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the ' ' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the ' ' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl concatenate(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.stringType, _state.concatenate(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of applying boolean conversion to this object.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @return the result of applying boolean conversion to this object
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl convertToBool(TypeProvider typeProvider) {
|
| + InterfaceType boolType = typeProvider.boolType;
|
| + if (identical(type, boolType)) {
|
| + return this;
|
| + }
|
| + return new DartObjectImpl(boolType, _state.convertToBool());
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '/' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '/' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl divide(TypeProvider typeProvider, DartObjectImpl rightOperand) {
|
| + InstanceState result = _state.divide(rightOperand._state);
|
| + if (result is IntState) {
|
| + return new DartObjectImpl(typeProvider.intType, result);
|
| + } else if (result is DoubleState) {
|
| + return new DartObjectImpl(typeProvider.doubleType, result);
|
| + } else if (result is NumState) {
|
| + return new DartObjectImpl(typeProvider.numType, result);
|
| + }
|
| + // We should never get here.
|
| + throw new IllegalStateException("divide returned a ${result.runtimeType.toString()}");
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '==' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '==' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl equalEqual(TypeProvider typeProvider, DartObjectImpl rightOperand) {
|
| + if (type != rightOperand.type) {
|
| + String typeName = type.name;
|
| + if (!(typeName == "bool" || typeName == "double" || typeName == "int" || typeName == "num" || typeName == "String" || typeName == "Null" || type.isDynamic)) {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_NUM_STRING);
|
| + }
|
| + }
|
| + return new DartObjectImpl(typeProvider.boolType, _state.equalEqual(rightOperand._state));
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) {
|
| + if (object is! DartObjectImpl) {
|
| + return false;
|
| + }
|
| + DartObjectImpl dartObject = object as DartObjectImpl;
|
| + return type == dartObject.type && _state == dartObject._state;
|
| + }
|
| +
|
| + @override
|
| + bool get boolValue {
|
| + if (_state is BoolState) {
|
| + return (_state as BoolState).value;
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + double get doubleValue {
|
| + if (_state is DoubleState) {
|
| + return (_state as DoubleState).value;
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + HashMap<String, DartObjectImpl> get fields => _state.fields;
|
| +
|
| + @override
|
| + int get intValue {
|
| + if (_state is IntState) {
|
| + return (_state as IntState).value;
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + String get stringValue {
|
| + if (_state is StringState) {
|
| + return (_state as StringState).value;
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object get value => _state.value;
|
| +
|
| + /**
|
| + * Return the result of invoking the '>' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '>' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl greaterThan(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.boolType, _state.greaterThan(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the '>=' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '>=' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl greaterThanOrEqual(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.boolType, _state.greaterThanOrEqual(rightOperand._state));
|
| +
|
| + @override
|
| + bool get hasExactValue => _state.hasExactValue;
|
| +
|
| + @override
|
| + int get hashCode => ObjectUtilities.combineHashCodes(type.hashCode, _state.hashCode);
|
| +
|
| + /**
|
| + * Return the result of invoking the '~/' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '~/' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl integerDivide(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.intType, _state.integerDivide(rightOperand._state));
|
| +
|
| + /**
|
| + * Return `true` if this object represents an object whose type is 'bool'.
|
| + *
|
| + * @return `true` if this object represents a boolean value
|
| + */
|
| + bool get isBool => _state.isBool;
|
| +
|
| + /**
|
| + * Return `true` if this object represents an object whose type is either 'bool', 'num',
|
| + * 'String', or 'Null'.
|
| + *
|
| + * @return `true` if this object represents either a boolean, numeric, string or null value
|
| + */
|
| + bool get isBoolNumStringOrNull => _state.isBoolNumStringOrNull;
|
| +
|
| + @override
|
| + bool get isFalse => _state is BoolState && identical((_state as BoolState).value, false);
|
| +
|
| + @override
|
| + bool get isNull => _state is NullState;
|
| +
|
| + @override
|
| + bool get isTrue => _state is BoolState && identical((_state as BoolState).value, true);
|
| +
|
| + /**
|
| + * Return true if this object represents an unknown value.
|
| + */
|
| + bool get isUnknown => _state.isUnknown;
|
| +
|
| + /**
|
| + * Return `true` if this object represents an instance of a user-defined class.
|
| + *
|
| + * @return `true` if this object represents an instance of a user-defined class
|
| + */
|
| + bool get isUserDefinedObject => _state is GenericState;
|
| +
|
| + /**
|
| + * Return the result of invoking the '<' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '<' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl lessThan(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.boolType, _state.lessThan(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the '<=' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '<=' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl lessThanOrEqual(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.boolType, _state.lessThanOrEqual(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the '&&' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '&&' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl logicalAnd(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.boolType, _state.logicalAnd(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the '!' operator on this object.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @return the result of invoking the '!' operator on this object
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl logicalNot(TypeProvider typeProvider) => new DartObjectImpl(typeProvider.boolType, _state.logicalNot());
|
| +
|
| + /**
|
| + * Return the result of invoking the '||' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '||' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl logicalOr(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.boolType, _state.logicalOr(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the '-' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '-' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl minus(TypeProvider typeProvider, DartObjectImpl rightOperand) {
|
| + InstanceState result = _state.minus(rightOperand._state);
|
| + if (result is IntState) {
|
| + return new DartObjectImpl(typeProvider.intType, result);
|
| + } else if (result is DoubleState) {
|
| + return new DartObjectImpl(typeProvider.doubleType, result);
|
| + } else if (result is NumState) {
|
| + return new DartObjectImpl(typeProvider.numType, result);
|
| + }
|
| + // We should never get here.
|
| + throw new IllegalStateException("minus returned a ${result.runtimeType.toString()}");
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '-' operator on this object.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @return the result of invoking the '-' operator on this object
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl negated(TypeProvider typeProvider) {
|
| + InstanceState result = _state.negated();
|
| + if (result is IntState) {
|
| + return new DartObjectImpl(typeProvider.intType, result);
|
| + } else if (result is DoubleState) {
|
| + return new DartObjectImpl(typeProvider.doubleType, result);
|
| + } else if (result is NumState) {
|
| + return new DartObjectImpl(typeProvider.numType, result);
|
| + }
|
| + // We should never get here.
|
| + throw new IllegalStateException("negated returned a ${result.runtimeType.toString()}");
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '!=' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '!=' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl notEqual(TypeProvider typeProvider, DartObjectImpl rightOperand) {
|
| + if (type != rightOperand.type) {
|
| + String typeName = type.name;
|
| + if (typeName != "bool" && typeName != "double" && typeName != "int" && typeName != "num" && typeName != "String") {
|
| + return new DartObjectImpl(typeProvider.boolType, BoolState.TRUE_STATE);
|
| + }
|
| + }
|
| + return new DartObjectImpl(typeProvider.boolType, _state.equalEqual(rightOperand._state).logicalNot());
|
| + }
|
| +
|
| + /**
|
| + * Return the result of converting this object to a String.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @return the result of converting this object to a String
|
| + * @throws EvaluationException if the object cannot be converted to a String
|
| + */
|
| + DartObjectImpl performToString(TypeProvider typeProvider) {
|
| + InterfaceType stringType = typeProvider.stringType;
|
| + if (identical(type, stringType)) {
|
| + return this;
|
| + }
|
| + return new DartObjectImpl(stringType, _state.convertToString());
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '%' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '%' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl remainder(TypeProvider typeProvider, DartObjectImpl rightOperand) {
|
| + InstanceState result = _state.remainder(rightOperand._state);
|
| + if (result is IntState) {
|
| + return new DartObjectImpl(typeProvider.intType, result);
|
| + } else if (result is DoubleState) {
|
| + return new DartObjectImpl(typeProvider.doubleType, result);
|
| + } else if (result is NumState) {
|
| + return new DartObjectImpl(typeProvider.numType, result);
|
| + }
|
| + // We should never get here.
|
| + throw new IllegalStateException("remainder returned a ${result.runtimeType.toString()}");
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '<<' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '<<' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl shiftLeft(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.intType, _state.shiftLeft(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the '>>' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '>>' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl shiftRight(TypeProvider typeProvider, DartObjectImpl rightOperand) => new DartObjectImpl(typeProvider.intType, _state.shiftRight(rightOperand._state));
|
| +
|
| + /**
|
| + * Return the result of invoking the '*' operator on this object with the given argument.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '*' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + DartObjectImpl times(TypeProvider typeProvider, DartObjectImpl rightOperand) {
|
| + InstanceState result = _state.times(rightOperand._state);
|
| + if (result is IntState) {
|
| + return new DartObjectImpl(typeProvider.intType, result);
|
| + } else if (result is DoubleState) {
|
| + return new DartObjectImpl(typeProvider.doubleType, result);
|
| + } else if (result is NumState) {
|
| + return new DartObjectImpl(typeProvider.numType, result);
|
| + }
|
| + // We should never get here.
|
| + throw new IllegalStateException("times returned a ${result.runtimeType.toString()}");
|
| + }
|
| +
|
| + @override
|
| + String toString() => "${type.displayName} (${_state.toString()})";
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `DeclaredVariables` provide access to the values of variables that
|
| + * have been defined on the command line using the `-D` option.
|
| + */
|
| +class DeclaredVariables {
|
| + /**
|
| + * A table mapping the names of declared variables to their values.
|
| + */
|
| + HashMap<String, String> _declaredVariables = new HashMap<String, String>();
|
| +
|
| + /**
|
| + * Define a variable with the given name to have the given value.
|
| + *
|
| + * @param variableName the name of the variable being defined
|
| + * @param value the value of the variable
|
| + */
|
| + void define(String variableName, String value) {
|
| + _declaredVariables[variableName] = value;
|
| + }
|
| +
|
| + /**
|
| + * Return the value of the variable with the given name interpreted as a boolean value. If the
|
| + * variable is not defined (or [variableName] is null), a DartObject representing "unknown"
|
| + * is returned. If the value can't be parsed as a boolean, a DartObject representing null is
|
| + * returned.
|
| + *
|
| + * @param typeProvider the type provider used to find the type 'bool'
|
| + * @param variableName the name of the variable whose value is to be returned
|
| + */
|
| + DartObject getBool(TypeProvider typeProvider, String variableName) {
|
| + String value = _declaredVariables[variableName];
|
| + if (value == null) {
|
| + return new DartObjectImpl(typeProvider.boolType, BoolState.UNKNOWN_VALUE);
|
| + }
|
| + if (value == "true") {
|
| + return new DartObjectImpl(typeProvider.boolType, BoolState.TRUE_STATE);
|
| + } else if (value == "false") {
|
| + return new DartObjectImpl(typeProvider.boolType, BoolState.FALSE_STATE);
|
| + }
|
| + return new DartObjectImpl(typeProvider.nullType, NullState.NULL_STATE);
|
| + }
|
| +
|
| + /**
|
| + * Return the value of the variable with the given name interpreted as an integer value. If the
|
| + * variable is not defined (or [variableName] is null), a DartObject representing "unknown"
|
| + * is returned. If the value can't be parsed as an integer, a DartObject representing null is
|
| + * returned.
|
| + *
|
| + * @param typeProvider the type provider used to find the type 'int'
|
| + * @param variableName the name of the variable whose value is to be returned
|
| + */
|
| + DartObject getInt(TypeProvider typeProvider, String variableName) {
|
| + String value = _declaredVariables[variableName];
|
| + if (value == null) {
|
| + return new DartObjectImpl(typeProvider.intType, IntState.UNKNOWN_VALUE);
|
| + }
|
| + int bigInteger;
|
| + try {
|
| + bigInteger = int.parse(value);
|
| + } on FormatException catch (exception) {
|
| + return new DartObjectImpl(typeProvider.nullType, NullState.NULL_STATE);
|
| + }
|
| + return new DartObjectImpl(typeProvider.intType, new IntState(bigInteger));
|
| + }
|
| +
|
| + /**
|
| + * Return the value of the variable with the given name interpreted as a String value, or
|
| + * `null` if the variable is not defined. Return the value of the variable with the given
|
| + * name interpreted as a String value. If the variable is not defined (or [variableName] is
|
| + * null), a DartObject representing "unknown" is returned.
|
| + *
|
| + * @param typeProvider the type provider used to find the type 'String'
|
| + * @param variableName the name of the variable whose value is to be returned
|
| + */
|
| + DartObject getString(TypeProvider typeProvider, String variableName) {
|
| + String value = _declaredVariables[variableName];
|
| + if (value == null) {
|
| + return new DartObjectImpl(typeProvider.intType, IntState.UNKNOWN_VALUE);
|
| + }
|
| + return new DartObjectImpl(typeProvider.stringType, new StringState(value));
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `DoubleState` represent the state of an object representing a
|
| + * double.
|
| + */
|
| +class DoubleState extends NumState {
|
| + /**
|
| + * The value of this instance.
|
| + */
|
| + final double value;
|
| +
|
| + /**
|
| + * A state that can be used to represent a double whose value is not known.
|
| + */
|
| + static DoubleState UNKNOWN_VALUE = new DoubleState(null);
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent a double with the given value.
|
| + *
|
| + * @param value the value of this instance
|
| + */
|
| + DoubleState(this.value);
|
| +
|
| + @override
|
| + NumState add(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value + rightValue.toDouble());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value + rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + StringState convertToString() {
|
| + if (value == null) {
|
| + return StringState.UNKNOWN_VALUE;
|
| + }
|
| + return new StringState(value.toString());
|
| + }
|
| +
|
| + @override
|
| + NumState divide(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value / rightValue.toDouble());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value / rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value == rightValue);
|
| + } else if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value == rightValue.toDouble());
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.FALSE_STATE;
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) => object is DoubleState && (value == object.value);
|
| +
|
| + @override
|
| + String get typeName => "double";
|
| +
|
| + @override
|
| + BoolState greaterThan(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value > rightValue.toDouble());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value > rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + BoolState greaterThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value >= rightValue.toDouble());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value >= rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + bool get hasExactValue => true;
|
| +
|
| + @override
|
| + int get hashCode => value == null ? 0 : value.hashCode;
|
| +
|
| + @override
|
| + IntState integerDivide(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| + double result = value / rightValue.toDouble();
|
| + return new IntState(result.toInt());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| + double result = value / rightValue;
|
| + return new IntState(result.toInt());
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + bool get isBoolNumStringOrNull => true;
|
| +
|
| + @override
|
| + bool get isUnknown => value == null;
|
| +
|
| + @override
|
| + BoolState lessThan(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value < rightValue.toDouble());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value < rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + BoolState lessThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value <= rightValue.toDouble());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value <= rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + NumState minus(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value - rightValue.toDouble());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value - rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + NumState negated() {
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(-(value));
|
| + }
|
| +
|
| + @override
|
| + NumState remainder(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value % rightValue.toDouble());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value % rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + NumState times(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value * rightValue.toDouble());
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value * rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + String toString() => value == null ? "-unknown-" : value.toString();
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `DynamicState` represent the state of an object representing a Dart
|
| + * object for which there is no type information.
|
| + */
|
| +class DynamicState extends InstanceState {
|
| + /**
|
| + * The unique instance of this class.
|
| + */
|
| + static DynamicState DYNAMIC_STATE = new DynamicState();
|
| +
|
| + @override
|
| + NumState add(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return _unknownNum(rightOperand);
|
| + }
|
| +
|
| + @override
|
| + IntState bitAnd(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + IntState bitNot() => IntState.UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + IntState bitOr(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + IntState bitXor(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + StringState concatenate(InstanceState rightOperand) {
|
| + assertString(rightOperand);
|
| + return StringState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + BoolState convertToBool() => BoolState.UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + StringState convertToString() => StringState.UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + NumState divide(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return _unknownNum(rightOperand);
|
| + }
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + String get typeName => "dynamic";
|
| +
|
| + @override
|
| + BoolState greaterThan(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + BoolState greaterThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + IntState integerDivide(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + bool get isBool => true;
|
| +
|
| + @override
|
| + bool get isBoolNumStringOrNull => true;
|
| +
|
| + @override
|
| + BoolState lessThan(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + BoolState lessThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + BoolState logicalAnd(InstanceState rightOperand) {
|
| + assertBool(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + BoolState logicalNot() => BoolState.UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + BoolState logicalOr(InstanceState rightOperand) {
|
| + assertBool(rightOperand);
|
| + return rightOperand.convertToBool();
|
| + }
|
| +
|
| + @override
|
| + NumState minus(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return _unknownNum(rightOperand);
|
| + }
|
| +
|
| + @override
|
| + NumState negated() => NumState.UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + NumState remainder(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return _unknownNum(rightOperand);
|
| + }
|
| +
|
| + @override
|
| + IntState shiftLeft(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + IntState shiftRight(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + NumState times(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return _unknownNum(rightOperand);
|
| + }
|
| +
|
| + /**
|
| + * Return an object representing an unknown numeric value whose type is based on the type of the
|
| + * right-hand operand.
|
| + *
|
| + * @param rightOperand the operand whose type will determine the type of the result
|
| + * @return an object representing an unknown numeric value
|
| + */
|
| + NumState _unknownNum(InstanceState rightOperand) {
|
| + if (rightOperand is IntState) {
|
| + return IntState.UNKNOWN_VALUE;
|
| + } else if (rightOperand is DoubleState) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return NumState.UNKNOWN_VALUE;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `ErrorResult` represent the result of evaluating an expression that
|
| + * is not a valid compile time constant.
|
| + */
|
| +class ErrorResult extends EvaluationResultImpl {
|
| + /**
|
| + * The errors that prevent the expression from being a valid compile time constant.
|
| + */
|
| + List<ErrorResult_ErrorData> _errors = new List<ErrorResult_ErrorData>();
|
| +
|
| + /**
|
| + * Initialize a newly created result representing the error with the given code reported against
|
| + * the given node.
|
| + *
|
| + * @param node the node against which the error should be reported
|
| + * @param errorCode the error code for the error to be generated
|
| + */
|
| + ErrorResult.con1(AstNode node, ErrorCode errorCode) {
|
| + _errors.add(new ErrorResult_ErrorData(node, errorCode));
|
| + }
|
| +
|
| + /**
|
| + * Initialize a newly created result to represent the union of the errors in the given result
|
| + * objects.
|
| + *
|
| + * @param firstResult the first set of results being merged
|
| + * @param secondResult the second set of results being merged
|
| + */
|
| + ErrorResult.con2(ErrorResult firstResult, ErrorResult secondResult) {
|
| + _errors.addAll(firstResult._errors);
|
| + _errors.addAll(secondResult._errors);
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl add(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.addToError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl applyBooleanConversion(TypeProvider typeProvider, AstNode node) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl bitAnd(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.bitAndError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl bitNot(TypeProvider typeProvider, Expression node) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl bitOr(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.bitOrError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl bitXor(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.bitXorError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl concatenate(TypeProvider typeProvider, Expression node, EvaluationResultImpl rightOperand) => rightOperand.concatenateError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl divide(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.divideError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl equalEqual(TypeProvider typeProvider, Expression node, EvaluationResultImpl rightOperand) => rightOperand.equalEqualError(node, this);
|
| +
|
| + @override
|
| + bool equalValues(TypeProvider typeProvider, EvaluationResultImpl result) => false;
|
| +
|
| + List<ErrorResult_ErrorData> get errorData => _errors;
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThan(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.greaterThanError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanOrEqual(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.greaterThanOrEqualError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl integerDivide(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.integerDivideError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl integerDivideValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThan(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.lessThanError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanOrEqual(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.lessThanOrEqualError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalAnd(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.logicalAndError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalNot(TypeProvider typeProvider, Expression node) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalOr(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.logicalOrError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl minus(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.minusError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl negated(TypeProvider typeProvider, Expression node) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl notEqual(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.notEqualError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl performToString(TypeProvider typeProvider, AstNode node) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl remainder(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.remainderError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftLeft(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.shiftLeftError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftRight(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.shiftRightError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl times(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.timesError(node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl addToError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl addToValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl bitAndError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl bitAndValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl bitOrError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl bitOrValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl bitXorError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl bitXorValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl concatenateError(Expression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl concatenateValid(TypeProvider typeProvider, Expression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl divideError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl divideValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl equalEqualError(Expression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl equalEqualValid(TypeProvider typeProvider, Expression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanOrEqualError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanOrEqualValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl integerDivideError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanOrEqualError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanOrEqualValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalAndError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalAndValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalOrError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalOrValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl minusError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl minusValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl notEqualError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl notEqualValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl remainderError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl remainderValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftLeftError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftLeftValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftRightError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftRightValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +
|
| + @override
|
| + EvaluationResultImpl timesError(BinaryExpression node, ErrorResult leftOperand) => new ErrorResult.con2(this, leftOperand);
|
| +
|
| + @override
|
| + EvaluationResultImpl timesValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) => this;
|
| +}
|
| +
|
| +class ErrorResult_ErrorData {
|
| + /**
|
| + * The node against which the error should be reported.
|
| + */
|
| + final AstNode node;
|
| +
|
| + /**
|
| + * The error code for the error to be generated.
|
| + */
|
| + final ErrorCode errorCode;
|
| +
|
| + /**
|
| + * Initialize a newly created data holder to represent the error with the given code reported
|
| + * against the given node.
|
| + *
|
| + * @param node the node against which the error should be reported
|
| + * @param errorCode the error code for the error to be generated
|
| + */
|
| + ErrorResult_ErrorData(this.node, this.errorCode);
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `EvaluationException` represent a run-time exception that would be
|
| + * thrown during the evaluation of Dart code.
|
| + */
|
| +class EvaluationException extends JavaException {
|
| + /**
|
| + * The error code associated with the exception.
|
| + */
|
| + final ErrorCode errorCode;
|
| +
|
| + /**
|
| + * Initialize a newly created exception to have the given error code.
|
| + *
|
| + * @param errorCode the error code associated with the exception
|
| + */
|
| + EvaluationException(this.errorCode);
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `EvaluationResult` represent the result of attempting to evaluate an
|
| + * expression.
|
| + */
|
| +class EvaluationResult {
|
| + /**
|
| + * Return an evaluation result representing the result of evaluating an expression that is not a
|
| + * compile-time constant because of the given errors.
|
| + *
|
| + * @param errors the errors that should be reported for the expression(s) that were evaluated
|
| + * @return the result of evaluating an expression that is not a compile-time constant
|
| + */
|
| + static EvaluationResult forErrors(List<AnalysisError> errors) => new EvaluationResult(null, errors);
|
| +
|
| + /**
|
| + * Return an evaluation result representing the result of evaluating an expression that is a
|
| + * compile-time constant that evaluates to the given value.
|
| + *
|
| + * @param value the value of the expression
|
| + * @return the result of evaluating an expression that is a compile-time constant
|
| + */
|
| + static EvaluationResult forValue(DartObject value) => new EvaluationResult(value, null);
|
| +
|
| + /**
|
| + * The value of the expression.
|
| + */
|
| + final DartObject value;
|
| +
|
| + /**
|
| + * The errors that should be reported for the expression(s) that were evaluated.
|
| + */
|
| + final List<AnalysisError> _errors;
|
| +
|
| + /**
|
| + * Initialize a newly created result object with the given state. Clients should use one of the
|
| + * factory methods: [forErrors] and [forValue].
|
| + *
|
| + * @param value the value of the expression
|
| + * @param errors the errors that should be reported for the expression(s) that were evaluated
|
| + */
|
| + EvaluationResult(this.value, this._errors);
|
| +
|
| + /**
|
| + * Return an array containing the errors that should be reported for the expression(s) that were
|
| + * evaluated. If there are no such errors, the array will be empty. The array can be empty even if
|
| + * the expression is not a valid compile time constant if the errors would have been reported by
|
| + * other parts of the analysis engine.
|
| + */
|
| + List<AnalysisError> get errors => _errors == null ? AnalysisError.NO_ERRORS : _errors;
|
| +
|
| + /**
|
| + * Return `true` if the expression is a compile-time constant expression that would not
|
| + * throw an exception when evaluated.
|
| + *
|
| + * @return `true` if the expression is a valid compile-time constant expression
|
| + */
|
| + bool get isValid => _errors == null;
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `InternalResult` represent the result of attempting to evaluate a
|
| + * expression.
|
| + */
|
| +abstract class EvaluationResultImpl {
|
| + EvaluationResultImpl add(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + /**
|
| + * Return the result of applying boolean conversion to this result.
|
| + *
|
| + * @param typeProvider the type provider used to access known types
|
| + * @param node the node against which errors should be reported
|
| + * @return the result of applying boolean conversion to the given value
|
| + */
|
| + EvaluationResultImpl applyBooleanConversion(TypeProvider typeProvider, AstNode node);
|
| +
|
| + EvaluationResultImpl bitAnd(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl bitNot(TypeProvider typeProvider, Expression node);
|
| +
|
| + EvaluationResultImpl bitOr(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl bitXor(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl concatenate(TypeProvider typeProvider, Expression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl divide(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl equalEqual(TypeProvider typeProvider, Expression node, EvaluationResultImpl rightOperand);
|
| +
|
| + bool equalValues(TypeProvider typeProvider, EvaluationResultImpl result);
|
| +
|
| + EvaluationResultImpl greaterThan(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl greaterThanOrEqual(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl integerDivide(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl lessThan(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl lessThanOrEqual(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl logicalAnd(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl logicalNot(TypeProvider typeProvider, Expression node);
|
| +
|
| + EvaluationResultImpl logicalOr(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl minus(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl negated(TypeProvider typeProvider, Expression node);
|
| +
|
| + EvaluationResultImpl notEqual(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl performToString(TypeProvider typeProvider, AstNode node);
|
| +
|
| + EvaluationResultImpl remainder(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl shiftLeft(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl shiftRight(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl times(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand);
|
| +
|
| + EvaluationResultImpl addToError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl addToValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl bitAndError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl bitAndValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl bitOrError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl bitOrValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl bitXorError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl bitXorValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl concatenateError(Expression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl concatenateValid(TypeProvider typeProvider, Expression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl divideError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl divideValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl equalEqualError(Expression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl equalEqualValid(TypeProvider typeProvider, Expression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl greaterThanError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl greaterThanOrEqualError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl greaterThanOrEqualValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl greaterThanValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl integerDivideError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl integerDivideValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl lessThanError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl lessThanOrEqualError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl lessThanOrEqualValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl lessThanValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl logicalAndError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl logicalAndValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl logicalOrError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl logicalOrValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl minusError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl minusValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl notEqualError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl notEqualValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl remainderError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl remainderValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl shiftLeftError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl shiftLeftValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl shiftRightError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl shiftRightValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +
|
| + EvaluationResultImpl timesError(BinaryExpression node, ErrorResult leftOperand);
|
| +
|
| + EvaluationResultImpl timesValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand);
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `FunctionState` represent the state of an object representing a
|
| + * function.
|
| + */
|
| +class FunctionState extends InstanceState {
|
| + /**
|
| + * The element representing the function being modeled.
|
| + */
|
| + final ExecutableElement _element;
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent the given function.
|
| + *
|
| + * @param element the element representing the function being modeled
|
| + */
|
| + FunctionState(this._element);
|
| +
|
| + @override
|
| + StringState convertToString() {
|
| + if (_element == null) {
|
| + return StringState.UNKNOWN_VALUE;
|
| + }
|
| + return new StringState(_element.name);
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) => object is FunctionState && (_element == object._element);
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + if (_element == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is FunctionState) {
|
| + ExecutableElement rightElement = rightOperand._element;
|
| + if (rightElement == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(_element == rightElement);
|
| + } else if (rightOperand is DynamicState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.FALSE_STATE;
|
| + }
|
| +
|
| + @override
|
| + String get typeName => "Function";
|
| +
|
| + @override
|
| + int get hashCode => _element == null ? 0 : _element.hashCode;
|
| +
|
| + @override
|
| + String toString() => _element == null ? "-unknown-" : _element.name;
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `GenericState` represent the state of an object representing a Dart
|
| + * object for which there is no more specific state.
|
| + */
|
| +class GenericState extends InstanceState {
|
| + /**
|
| + * The values of the fields of this instance.
|
| + */
|
| + final HashMap<String, DartObjectImpl> _fieldMap;
|
| +
|
| + /**
|
| + * Pseudo-field that we use to represent fields in the superclass.
|
| + */
|
| + static String SUPERCLASS_FIELD = "(super)";
|
| +
|
| + /**
|
| + * A state that can be used to represent an object whose state is not known.
|
| + */
|
| + static GenericState UNKNOWN_VALUE = new GenericState(new HashMap<String, DartObjectImpl>());
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent a newly created object.
|
| + *
|
| + * @param fieldMap the values of the fields of this instance
|
| + */
|
| + GenericState(this._fieldMap);
|
| +
|
| + @override
|
| + StringState convertToString() => StringState.UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (rightOperand is DynamicState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(this == rightOperand);
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) {
|
| + if (object is! GenericState) {
|
| + return false;
|
| + }
|
| + GenericState state = object as GenericState;
|
| + HashSet<String> otherFields = new HashSet<String>.from(state._fieldMap.keys.toSet());
|
| + for (String fieldName in _fieldMap.keys.toSet()) {
|
| + if (_fieldMap[fieldName] != state._fieldMap[fieldName]) {
|
| + return false;
|
| + }
|
| + otherFields.remove(fieldName);
|
| + }
|
| + for (String fieldName in otherFields) {
|
| + if (state._fieldMap[fieldName] != _fieldMap[fieldName]) {
|
| + return false;
|
| + }
|
| + }
|
| + return true;
|
| + }
|
| +
|
| + @override
|
| + HashMap<String, DartObjectImpl> get fields => _fieldMap;
|
| +
|
| + @override
|
| + String get typeName => "user defined type";
|
| +
|
| + @override
|
| + int get hashCode {
|
| + int hashCode = 0;
|
| + for (DartObjectImpl value in _fieldMap.values) {
|
| + hashCode += value.hashCode;
|
| + }
|
| + return hashCode;
|
| + }
|
| +
|
| + @override
|
| + bool get isUnknown => identical(this, UNKNOWN_VALUE);
|
| +}
|
| +
|
| +/**
|
| + * The class `InstanceState` defines the behavior of objects representing the state of a Dart
|
| + * object.
|
| + */
|
| +abstract class InstanceState {
|
| + /**
|
| + * Return the result of invoking the '+' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '+' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + NumState add(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '&' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '&' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + IntState bitAnd(InstanceState rightOperand) {
|
| + assertIntOrNull(this);
|
| + assertIntOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '~' operator on this object.
|
| + *
|
| + * @return the result of invoking the '~' operator on this object
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + IntState bitNot() {
|
| + assertIntOrNull(this);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '|' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '|' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + IntState bitOr(InstanceState rightOperand) {
|
| + assertIntOrNull(this);
|
| + assertIntOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '^' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '^' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + IntState bitXor(InstanceState rightOperand) {
|
| + assertIntOrNull(this);
|
| + assertIntOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the ' ' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the ' ' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + StringState concatenate(InstanceState rightOperand) {
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of applying boolean conversion to this object.
|
| + *
|
| + * @param typeProvider the type provider used to find known types
|
| + * @return the result of applying boolean conversion to this object
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + BoolState convertToBool() => BoolState.FALSE_STATE;
|
| +
|
| + /**
|
| + * Return the result of converting this object to a String.
|
| + *
|
| + * @return the result of converting this object to a String
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + StringState convertToString();
|
| +
|
| + /**
|
| + * Return the result of invoking the '/' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '/' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + NumState divide(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '==' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '==' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + BoolState equalEqual(InstanceState rightOperand);
|
| +
|
| + /**
|
| + * If this represents a generic dart object, return a map from its fieldnames to their values.
|
| + * Otherwise return null.
|
| + */
|
| + HashMap<String, DartObjectImpl> get fields => null;
|
| +
|
| + /**
|
| + * Return the name of the type of this value.
|
| + *
|
| + * @return the name of the type of this value
|
| + */
|
| + String get typeName;
|
| +
|
| + /**
|
| + * Return this object's value if it can be represented exactly, or `null` if either the
|
| + * value cannot be represented exactly or if the value is `null`. Clients should use
|
| + * [hasExactValue] to distinguish between these two cases.
|
| + *
|
| + * @return this object's value
|
| + */
|
| + Object get value => null;
|
| +
|
| + /**
|
| + * Return the result of invoking the '>' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '>' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + BoolState greaterThan(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '>=' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '>=' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + BoolState greaterThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if this object's value can be represented exactly.
|
| + *
|
| + * @return `true` if this object's value can be represented exactly
|
| + */
|
| + bool get hasExactValue => false;
|
| +
|
| + /**
|
| + * Return the result of invoking the '~/' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '~/' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + IntState integerDivide(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return `true` if this object represents an object whose type is 'bool'.
|
| + *
|
| + * @return `true` if this object represents a boolean value
|
| + */
|
| + bool get isBool => false;
|
| +
|
| + /**
|
| + * Return `true` if this object represents an object whose type is either 'bool', 'num',
|
| + * 'String', or 'Null'.
|
| + *
|
| + * @return `true` if this object represents either a boolean, numeric, string or null value
|
| + */
|
| + bool get isBoolNumStringOrNull => false;
|
| +
|
| + /**
|
| + * Return true if this object represents an unknown value.
|
| + */
|
| + bool get isUnknown => false;
|
| +
|
| + /**
|
| + * Return the result of invoking the '<' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '<' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + BoolState lessThan(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '<=' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '<=' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + BoolState lessThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '&&' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '&&' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + BoolState logicalAnd(InstanceState rightOperand) {
|
| + assertBool(this);
|
| + assertBool(rightOperand);
|
| + return BoolState.FALSE_STATE;
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '!' operator on this object.
|
| + *
|
| + * @return the result of invoking the '!' operator on this object
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + BoolState logicalNot() {
|
| + assertBool(this);
|
| + return BoolState.TRUE_STATE;
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '||' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '||' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + BoolState logicalOr(InstanceState rightOperand) {
|
| + assertBool(this);
|
| + assertBool(rightOperand);
|
| + return rightOperand.convertToBool();
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '-' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '-' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + NumState minus(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '-' operator on this object.
|
| + *
|
| + * @return the result of invoking the '-' operator on this object
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + NumState negated() {
|
| + assertNumOrNull(this);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '%' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '%' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + NumState remainder(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '<<' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '<<' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + IntState shiftLeft(InstanceState rightOperand) {
|
| + assertIntOrNull(this);
|
| + assertIntOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '>>' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '>>' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + IntState shiftRight(InstanceState rightOperand) {
|
| + assertIntOrNull(this);
|
| + assertIntOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Return the result of invoking the '*' operator on this object with the given argument.
|
| + *
|
| + * @param rightOperand the right-hand operand of the operation
|
| + * @return the result of invoking the '*' operator on this object with the given argument
|
| + * @throws EvaluationException if the operator is not appropriate for an object of this kind
|
| + */
|
| + NumState times(InstanceState rightOperand) {
|
| + assertNumOrNull(this);
|
| + assertNumOrNull(rightOperand);
|
| + throw new EvaluationException(CompileTimeErrorCode.INVALID_CONSTANT);
|
| + }
|
| +
|
| + /**
|
| + * Throw an exception if the given state does not represent a boolean value.
|
| + *
|
| + * @param state the state being tested
|
| + * @throws EvaluationException if the given state does not represent a boolean value
|
| + */
|
| + void assertBool(InstanceState state) {
|
| + if (!(state is BoolState || state is DynamicState)) {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL);
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Throw an exception if the given state does not represent a boolean, numeric, string or null
|
| + * value.
|
| + *
|
| + * @param state the state being tested
|
| + * @throws EvaluationException if the given state does not represent a boolean, numeric, string or
|
| + * null value
|
| + */
|
| + void assertBoolNumStringOrNull(InstanceState state) {
|
| + if (!(state is BoolState || state is DoubleState || state is IntState || state is NumState || state is StringState || state is NullState || state is DynamicState)) {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_NUM_STRING);
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Throw an exception if the given state does not represent an integer or null value.
|
| + *
|
| + * @param state the state being tested
|
| + * @throws EvaluationException if the given state does not represent an integer or null value
|
| + */
|
| + void assertIntOrNull(InstanceState state) {
|
| + if (!(state is IntState || state is NumState || state is NullState || state is DynamicState)) {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_TYPE_INT);
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Throw an exception if the given state does not represent a boolean, numeric, string or null
|
| + * value.
|
| + *
|
| + * @param state the state being tested
|
| + * @throws EvaluationException if the given state does not represent a boolean, numeric, string or
|
| + * null value
|
| + */
|
| + void assertNumOrNull(InstanceState state) {
|
| + if (!(state is DoubleState || state is IntState || state is NumState || state is NullState || state is DynamicState)) {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_TYPE_NUM);
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Throw an exception if the given state does not represent a String value.
|
| + *
|
| + * @param state the state being tested
|
| + * @throws EvaluationException if the given state does not represent a String value
|
| + */
|
| + void assertString(InstanceState state) {
|
| + if (!(state is StringState || state is DynamicState)) {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL);
|
| + }
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `IntState` represent the state of an object representing an int.
|
| + */
|
| +class IntState extends NumState {
|
| + /**
|
| + * The value of this instance.
|
| + */
|
| + final int value;
|
| +
|
| + /**
|
| + * A state that can be used to represent an int whose value is not known.
|
| + */
|
| + static IntState UNKNOWN_VALUE = new IntState(null);
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent an int with the given value.
|
| + *
|
| + * @param value the value of this instance
|
| + */
|
| + IntState(this.value);
|
| +
|
| + @override
|
| + NumState add(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + if (rightOperand is DoubleState) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(value + rightValue);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value.toDouble() + rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + IntState bitAnd(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(value & rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + IntState bitNot() {
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(~value);
|
| + }
|
| +
|
| + @override
|
| + IntState bitOr(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(value | rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + IntState bitXor(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(value ^ rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + StringState convertToString() {
|
| + if (value == null) {
|
| + return StringState.UNKNOWN_VALUE;
|
| + }
|
| + return new StringState(value.toString());
|
| + }
|
| +
|
| + @override
|
| + NumState divide(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + if (rightOperand is DoubleState) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + } else if (rightValue == 0) {
|
| + return new DoubleState(value.toDouble() / rightValue.toDouble());
|
| + }
|
| + return new IntState(value ~/ rightValue);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value.toDouble() / rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value == rightValue);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(rightValue == value.toDouble());
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.FALSE_STATE;
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) => object is IntState && (value == object.value);
|
| +
|
| + @override
|
| + String get typeName => "int";
|
| +
|
| + @override
|
| + BoolState greaterThan(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value.compareTo(rightValue) > 0);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value.toDouble() > rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + BoolState greaterThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value.compareTo(rightValue) >= 0);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value.toDouble() >= rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + bool get hasExactValue => true;
|
| +
|
| + @override
|
| + int get hashCode => value == null ? 0 : value.hashCode;
|
| +
|
| + @override
|
| + IntState integerDivide(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + } else if (rightValue == 0) {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_IDBZE);
|
| + }
|
| + return new IntState(value ~/ rightValue);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + double result = value.toDouble() / rightValue;
|
| + return new IntState(result.toInt());
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + bool get isBoolNumStringOrNull => true;
|
| +
|
| + @override
|
| + bool get isUnknown => value == null;
|
| +
|
| + @override
|
| + BoolState lessThan(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value.compareTo(rightValue) < 0);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value.toDouble() < rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + BoolState lessThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value.compareTo(rightValue) <= 0);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value.toDouble() <= rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + NumState minus(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + if (rightOperand is DoubleState) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(value - rightValue);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value.toDouble() - rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + NumState negated() {
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(-value);
|
| + }
|
| +
|
| + @override
|
| + NumState remainder(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + if (rightOperand is DoubleState) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + } else if (rightValue == 0) {
|
| + return new DoubleState(value.toDouble() % rightValue.toDouble());
|
| + }
|
| + return new IntState(value.remainder(rightValue));
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value.toDouble() % rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + IntState shiftLeft(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + } else if (rightValue.bitLength > 31) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(value << rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + IntState shiftRight(InstanceState rightOperand) {
|
| + assertIntOrNull(rightOperand);
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + } else if (rightValue.bitLength > 31) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(value >> rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + NumState times(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (value == null) {
|
| + if (rightOperand is DoubleState) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new IntState(value * rightValue);
|
| + } else if (rightOperand is DoubleState) {
|
| + double rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return DoubleState.UNKNOWN_VALUE;
|
| + }
|
| + return new DoubleState(value.toDouble() * rightValue);
|
| + } else if (rightOperand is DynamicState || rightOperand is NumState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + String toString() => value == null ? "-unknown-" : value.toString();
|
| +}
|
| +
|
| +/**
|
| + * The unique instance of the class `ListState` represents the state of an object representing
|
| + * a list.
|
| + */
|
| +class ListState extends InstanceState {
|
| + /**
|
| + * The elements of the list.
|
| + */
|
| + final List<DartObjectImpl> _elements;
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent a list with the given elements.
|
| + *
|
| + * @param elements the elements of the list
|
| + */
|
| + ListState(this._elements);
|
| +
|
| + @override
|
| + StringState convertToString() => StringState.UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (rightOperand is DynamicState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(this == rightOperand);
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) {
|
| + if (object is! ListState) {
|
| + return false;
|
| + }
|
| + List<DartObjectImpl> otherElements = (object as ListState)._elements;
|
| + int count = _elements.length;
|
| + if (otherElements.length != count) {
|
| + return false;
|
| + } else if (count == 0) {
|
| + return true;
|
| + }
|
| + for (int i = 0; i < count; i++) {
|
| + if (_elements[i] != otherElements[i]) {
|
| + return false;
|
| + }
|
| + }
|
| + return true;
|
| + }
|
| +
|
| + @override
|
| + String get typeName => "List";
|
| +
|
| + @override
|
| + List<Object> get value {
|
| + int count = _elements.length;
|
| + List<Object> result = new List<Object>(count);
|
| + for (int i = 0; i < count; i++) {
|
| + DartObjectImpl element = _elements[i];
|
| + if (!element.hasExactValue) {
|
| + return null;
|
| + }
|
| + result[i] = element.value;
|
| + }
|
| + return result;
|
| + }
|
| +
|
| + @override
|
| + bool get hasExactValue {
|
| + int count = _elements.length;
|
| + for (int i = 0; i < count; i++) {
|
| + if (!_elements[i].hasExactValue) {
|
| + return false;
|
| + }
|
| + }
|
| + return true;
|
| + }
|
| +
|
| + @override
|
| + int get hashCode {
|
| + int value = 0;
|
| + int count = _elements.length;
|
| + for (int i = 0; i < count; i++) {
|
| + value = (value << 3) ^ _elements[i].hashCode;
|
| + }
|
| + return value;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * The unique instance of the class `ListState` represents the state of an object representing
|
| + * a map.
|
| + */
|
| +class MapState extends InstanceState {
|
| + /**
|
| + * The entries in the map.
|
| + */
|
| + final HashMap<DartObjectImpl, DartObjectImpl> _entries;
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent a map with the given entries.
|
| + *
|
| + * @param entries the entries in the map
|
| + */
|
| + MapState(this._entries);
|
| +
|
| + @override
|
| + StringState convertToString() => StringState.UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (rightOperand is DynamicState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(this == rightOperand);
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) {
|
| + if (object is! MapState) {
|
| + return false;
|
| + }
|
| + HashMap<DartObjectImpl, DartObjectImpl> otherElements = (object as MapState)._entries;
|
| + int count = _entries.length;
|
| + if (otherElements.length != count) {
|
| + return false;
|
| + } else if (count == 0) {
|
| + return true;
|
| + }
|
| + for (MapEntry<DartObjectImpl, DartObjectImpl> entry in getMapEntrySet(_entries)) {
|
| + DartObjectImpl key = entry.getKey();
|
| + DartObjectImpl value = entry.getValue();
|
| + DartObjectImpl otherValue = otherElements[key];
|
| + if (value != otherValue) {
|
| + return false;
|
| + }
|
| + }
|
| + return true;
|
| + }
|
| +
|
| + @override
|
| + String get typeName => "Map";
|
| +
|
| + @override
|
| + Map<Object, Object> get value {
|
| + HashMap<Object, Object> result = new HashMap<Object, Object>();
|
| + for (MapEntry<DartObjectImpl, DartObjectImpl> entry in getMapEntrySet(_entries)) {
|
| + DartObjectImpl key = entry.getKey();
|
| + DartObjectImpl value = entry.getValue();
|
| + if (!key.hasExactValue || !value.hasExactValue) {
|
| + return null;
|
| + }
|
| + result[key.value] = value.value;
|
| + }
|
| + return result;
|
| + }
|
| +
|
| + @override
|
| + bool get hasExactValue {
|
| + for (MapEntry<DartObjectImpl, DartObjectImpl> entry in getMapEntrySet(_entries)) {
|
| + if (!entry.getKey().hasExactValue || !entry.getValue().hasExactValue) {
|
| + return false;
|
| + }
|
| + }
|
| + return true;
|
| + }
|
| +
|
| + @override
|
| + int get hashCode {
|
| + int value = 0;
|
| + for (DartObjectImpl key in _entries.keys.toSet()) {
|
| + value = (value << 3) ^ key.hashCode;
|
| + }
|
| + return value;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * The unique instance of the class `NullState` represents the state of the value 'null'.
|
| + */
|
| +class NullState extends InstanceState {
|
| + /**
|
| + * An instance representing the boolean value 'true'.
|
| + */
|
| + static NullState NULL_STATE = new NullState();
|
| +
|
| + @override
|
| + BoolState convertToBool() {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + StringState convertToString() => new StringState("null");
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (rightOperand is DynamicState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(rightOperand is NullState);
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) => object is NullState;
|
| +
|
| + @override
|
| + String get typeName => "Null";
|
| +
|
| + @override
|
| + bool get hasExactValue => true;
|
| +
|
| + @override
|
| + int get hashCode => 0;
|
| +
|
| + @override
|
| + bool get isBoolNumStringOrNull => true;
|
| +
|
| + @override
|
| + BoolState logicalNot() {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
|
| + }
|
| +
|
| + @override
|
| + String toString() => "null";
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `NumState` represent the state of an object representing a number of
|
| + * an unknown type (a 'num').
|
| + */
|
| +class NumState extends InstanceState {
|
| + /**
|
| + * A state that can be used to represent a number whose value is not known.
|
| + */
|
| + static NumState UNKNOWN_VALUE = new NumState();
|
| +
|
| + @override
|
| + NumState add(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + StringState convertToString() => StringState.UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + NumState divide(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) => object is NumState;
|
| +
|
| + @override
|
| + String get typeName => "num";
|
| +
|
| + @override
|
| + BoolState greaterThan(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + BoolState greaterThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + int get hashCode => 7;
|
| +
|
| + @override
|
| + IntState integerDivide(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + if (rightOperand is IntState) {
|
| + int rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return IntState.UNKNOWN_VALUE;
|
| + } else if (rightValue == 0) {
|
| + throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_THROWS_IDBZE);
|
| + }
|
| + } else if (rightOperand is DynamicState) {
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| + return IntState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + bool get isBoolNumStringOrNull => true;
|
| +
|
| + @override
|
| + bool get isUnknown => identical(this, UNKNOWN_VALUE);
|
| +
|
| + @override
|
| + BoolState lessThan(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + BoolState lessThanOrEqual(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + NumState minus(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + NumState negated() => UNKNOWN_VALUE;
|
| +
|
| + @override
|
| + NumState remainder(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + NumState times(InstanceState rightOperand) {
|
| + assertNumOrNull(rightOperand);
|
| + return UNKNOWN_VALUE;
|
| + }
|
| +
|
| + @override
|
| + String toString() => "-unknown-";
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `ReferenceFinder` add reference information for a given variable to
|
| + * the bi-directional mapping used to order the evaluation of constants.
|
| + */
|
| +class ReferenceFinder extends RecursiveAstVisitor<Object> {
|
| + /**
|
| + * The element representing the construct that will be visited.
|
| + */
|
| + final AstNode _source;
|
| +
|
| + /**
|
| + * A graph in which the nodes are the constant variables and the edges are from each variable to
|
| + * the other constant variables that are referenced in the head's initializer.
|
| + */
|
| + final DirectedGraph<AstNode> _referenceGraph;
|
| +
|
| + /**
|
| + * A table mapping constant variables to the declarations of those variables.
|
| + */
|
| + final HashMap<VariableElement, VariableDeclaration> _variableDeclarationMap;
|
| +
|
| + /**
|
| + * A table mapping constant constructors to the declarations of those constructors.
|
| + */
|
| + final HashMap<ConstructorElement, ConstructorDeclaration> _constructorDeclarationMap;
|
| +
|
| + /**
|
| + * Initialize a newly created reference finder to find references from the given variable to other
|
| + * variables and to add those references to the given graph.
|
| + *
|
| + * @param source the element representing the variable whose initializer will be visited
|
| + * @param referenceGraph a graph recording which variables (heads) reference which other variables
|
| + * (tails) in their initializers
|
| + * @param variableDeclarationMap A table mapping constant variables to the declarations of those
|
| + * variables.
|
| + * @param constructorDeclarationMap A table mapping constant constructors to the declarations of
|
| + * those constructors.
|
| + */
|
| + ReferenceFinder(this._source, this._referenceGraph, this._variableDeclarationMap, this._constructorDeclarationMap);
|
| +
|
| + @override
|
| + Object visitInstanceCreationExpression(InstanceCreationExpression node) {
|
| + if (node.isConst) {
|
| + _referenceGraph.addEdge(_source, node);
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitSimpleIdentifier(SimpleIdentifier node) {
|
| + Element element = node.staticElement;
|
| + if (element is PropertyAccessorElement) {
|
| + element = (element as PropertyAccessorElement).variable;
|
| + }
|
| + if (element is VariableElement) {
|
| + VariableElement variable = element as VariableElement;
|
| + if (variable.isConst) {
|
| + VariableDeclaration variableDeclaration = _variableDeclarationMap[variable];
|
| + // The declaration will be null when the variable is not defined in the compilation units
|
| + // that were used to produce the variableDeclarationMap. In such cases, the variable should
|
| + // already have a value associated with it, but we don't bother to check because there's
|
| + // nothing we can do about it at this point.
|
| + if (variableDeclaration != null) {
|
| + _referenceGraph.addEdge(_source, variableDeclaration);
|
| + }
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +
|
| + @override
|
| + Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
|
| + super.visitSuperConstructorInvocation(node);
|
| + ConstructorElement constructor = node.staticElement;
|
| + if (constructor != null && constructor.isConst) {
|
| + ConstructorDeclaration constructorDeclaration = _constructorDeclarationMap[constructor];
|
| + // The declaration will be null when the constructor is not defined in the compilation
|
| + // units that were used to produce the constructorDeclarationMap. In such cases, the
|
| + // constructor should already have its initializer AST's stored in it, but we don't bother
|
| + // to check because there's nothing we can do about it at this point.
|
| + if (constructorDeclaration != null) {
|
| + _referenceGraph.addEdge(_source, constructorDeclaration);
|
| + }
|
| + }
|
| + return null;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `StringState` represent the state of an object representing a
|
| + * string.
|
| + */
|
| +class StringState extends InstanceState {
|
| + /**
|
| + * The value of this instance.
|
| + */
|
| + final String value;
|
| +
|
| + /**
|
| + * A state that can be used to represent a double whose value is not known.
|
| + */
|
| + static StringState UNKNOWN_VALUE = new StringState(null);
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent the given value.
|
| + *
|
| + * @param value the value of this instance
|
| + */
|
| + StringState(this.value);
|
| +
|
| + @override
|
| + StringState concatenate(InstanceState rightOperand) {
|
| + if (value == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is StringState) {
|
| + String rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return new StringState("${value}${rightValue}");
|
| + } else if (rightOperand is DynamicState) {
|
| + return UNKNOWN_VALUE;
|
| + }
|
| + return super.concatenate(rightOperand);
|
| + }
|
| +
|
| + @override
|
| + StringState convertToString() => this;
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is StringState) {
|
| + String rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value == rightValue);
|
| + } else if (rightOperand is DynamicState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.FALSE_STATE;
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) => object is StringState && (value == object.value);
|
| +
|
| + @override
|
| + String get typeName => "String";
|
| +
|
| + @override
|
| + bool get hasExactValue => true;
|
| +
|
| + @override
|
| + int get hashCode => value == null ? 0 : value.hashCode;
|
| +
|
| + @override
|
| + bool get isBoolNumStringOrNull => true;
|
| +
|
| + @override
|
| + bool get isUnknown => value == null;
|
| +
|
| + @override
|
| + String toString() => value == null ? "-unknown-" : "'${value}'";
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `StringState` represent the state of an object representing a
|
| + * symbol.
|
| + */
|
| +class SymbolState extends InstanceState {
|
| + /**
|
| + * The value of this instance.
|
| + */
|
| + final String value;
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent the given value.
|
| + *
|
| + * @param value the value of this instance
|
| + */
|
| + SymbolState(this.value);
|
| +
|
| + @override
|
| + StringState convertToString() {
|
| + if (value == null) {
|
| + return StringState.UNKNOWN_VALUE;
|
| + }
|
| + return new StringState(value);
|
| + }
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (value == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is SymbolState) {
|
| + String rightValue = rightOperand.value;
|
| + if (rightValue == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(value == rightValue);
|
| + } else if (rightOperand is DynamicState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.FALSE_STATE;
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) => object is SymbolState && (value == object.value);
|
| +
|
| + @override
|
| + String get typeName => "Symbol";
|
| +
|
| + @override
|
| + bool get hasExactValue => true;
|
| +
|
| + @override
|
| + int get hashCode => value == null ? 0 : value.hashCode;
|
| +
|
| + @override
|
| + String toString() => value == null ? "-unknown-" : "#${value}";
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `TypeState` represent the state of an object representing a type.
|
| + */
|
| +class TypeState extends InstanceState {
|
| + /**
|
| + * The element representing the type being modeled.
|
| + */
|
| + final Element _element;
|
| +
|
| + /**
|
| + * Initialize a newly created state to represent the given value.
|
| + *
|
| + * @param element the element representing the type being modeled
|
| + */
|
| + TypeState(this._element);
|
| +
|
| + @override
|
| + StringState convertToString() {
|
| + if (_element == null) {
|
| + return StringState.UNKNOWN_VALUE;
|
| + }
|
| + return new StringState(_element.name);
|
| + }
|
| +
|
| + @override
|
| + bool operator ==(Object object) => object is TypeState && (_element == object._element);
|
| +
|
| + @override
|
| + BoolState equalEqual(InstanceState rightOperand) {
|
| + assertBoolNumStringOrNull(rightOperand);
|
| + if (_element == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + if (rightOperand is TypeState) {
|
| + Element rightElement = rightOperand._element;
|
| + if (rightElement == null) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.from(_element == rightElement);
|
| + } else if (rightOperand is DynamicState) {
|
| + return BoolState.UNKNOWN_VALUE;
|
| + }
|
| + return BoolState.FALSE_STATE;
|
| + }
|
| +
|
| + @override
|
| + String get typeName => "Type";
|
| +
|
| + @override
|
| + int get hashCode => _element == null ? 0 : _element.hashCode;
|
| +
|
| + @override
|
| + String toString() => _element == null ? "-unknown-" : _element.name;
|
| +}
|
| +
|
| +/**
|
| + * Instances of the class `ValidResult` represent the result of attempting to evaluate a valid
|
| + * compile time constant expression.
|
| + */
|
| +class ValidResult extends EvaluationResultImpl {
|
| + /**
|
| + * The value of the expression.
|
| + */
|
| + final DartObjectImpl value;
|
| +
|
| + /**
|
| + * Initialize a newly created result to represent the given value.
|
| + *
|
| + * @param value the value of the expression
|
| + */
|
| + ValidResult(this.value);
|
| +
|
| + @override
|
| + EvaluationResultImpl add(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.addToValid(typeProvider, node, this);
|
| +
|
| + /**
|
| + * Return the result of applying boolean conversion to this result.
|
| + *
|
| + * @param node the node against which errors should be reported
|
| + * @return the result of applying boolean conversion to the given value
|
| + */
|
| + @override
|
| + EvaluationResultImpl applyBooleanConversion(TypeProvider typeProvider, AstNode node) {
|
| + try {
|
| + return _valueOf(value.convertToBool(typeProvider));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl bitAnd(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.bitAndValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl bitNot(TypeProvider typeProvider, Expression node) {
|
| + try {
|
| + return _valueOf(value.bitNot(typeProvider));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl bitOr(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.bitOrValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl bitXor(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.bitXorValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl concatenate(TypeProvider typeProvider, Expression node, EvaluationResultImpl rightOperand) => rightOperand.concatenateValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl divide(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.divideValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl equalEqual(TypeProvider typeProvider, Expression node, EvaluationResultImpl rightOperand) => rightOperand.equalEqualValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + bool equalValues(TypeProvider typeProvider, EvaluationResultImpl result) {
|
| + if (result is! ValidResult) {
|
| + return false;
|
| + }
|
| + return value == (result as ValidResult).value;
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThan(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.greaterThanValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanOrEqual(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.greaterThanOrEqualValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl integerDivide(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.integerDivideValid(typeProvider, node, this);
|
| +
|
| + /**
|
| + * Return `true` if this object represents an object whose type is 'bool'.
|
| + *
|
| + * @return `true` if this object represents a boolean value
|
| + */
|
| + bool get isBool => value.isBool;
|
| +
|
| + /**
|
| + * Return `true` if this object represents an object whose type is either 'bool', 'num',
|
| + * 'String', or 'Null'.
|
| + *
|
| + * @return `true` if this object represents either a boolean, numeric, string or null value
|
| + */
|
| + bool get isBoolNumStringOrNull => value.isBoolNumStringOrNull;
|
| +
|
| + /**
|
| + * Return `true` if this result represents the value 'false'.
|
| + *
|
| + * @return `true` if this result represents the value 'false'
|
| + */
|
| + bool get isFalse => value.isFalse;
|
| +
|
| + /**
|
| + * Return `true` if this result represents the value 'null'.
|
| + *
|
| + * @return `true` if this result represents the value 'null'
|
| + */
|
| + bool get isNull => value.isNull;
|
| +
|
| + /**
|
| + * Return `true` if this result represents the value 'true'.
|
| + *
|
| + * @return `true` if this result represents the value 'true'
|
| + */
|
| + bool get isTrue => value.isTrue;
|
| +
|
| + /**
|
| + * Return `true` if this object represents an instance of a user-defined class.
|
| + *
|
| + * @return `true` if this object represents an instance of a user-defined class
|
| + */
|
| + bool get isUserDefinedObject => value.isUserDefinedObject;
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThan(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.lessThanValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanOrEqual(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.lessThanOrEqualValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalAnd(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.logicalAndValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalNot(TypeProvider typeProvider, Expression node) {
|
| + try {
|
| + return _valueOf(value.logicalNot(typeProvider));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalOr(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.logicalOrValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl minus(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.minusValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl negated(TypeProvider typeProvider, Expression node) {
|
| + try {
|
| + return _valueOf(value.negated(typeProvider));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl notEqual(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.notEqualValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl performToString(TypeProvider typeProvider, AstNode node) {
|
| + try {
|
| + return _valueOf(value.performToString(typeProvider));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl remainder(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.remainderValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftLeft(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.shiftLeftValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftRight(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.shiftRightValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + EvaluationResultImpl times(TypeProvider typeProvider, BinaryExpression node, EvaluationResultImpl rightOperand) => rightOperand.timesValid(typeProvider, node, this);
|
| +
|
| + @override
|
| + String toString() {
|
| + if (value == null) {
|
| + return "null";
|
| + }
|
| + return value.toString();
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl addToError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl addToValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.add(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl bitAndError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl bitAndValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.bitAnd(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl bitOrError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl bitOrValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.bitOr(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl bitXorError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl bitXorValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.bitXor(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl concatenateError(Expression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl concatenateValid(TypeProvider typeProvider, Expression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.concatenate(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl divideError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl divideValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.divide(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl equalEqualError(Expression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl equalEqualValid(TypeProvider typeProvider, Expression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.equalEqual(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanOrEqualError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanOrEqualValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.greaterThanOrEqual(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl greaterThanValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.greaterThan(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl integerDivideError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl integerDivideValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.integerDivide(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanOrEqualError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanOrEqualValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.lessThanOrEqual(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl lessThanValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.lessThan(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalAndError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalAndValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.logicalAnd(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalOrError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl logicalOrValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.logicalOr(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl minusError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl minusValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.minus(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl notEqualError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl notEqualValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.notEqual(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl remainderError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl remainderValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.remainder(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftLeftError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftLeftValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.shiftLeft(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftRightError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl shiftRightValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.shiftRight(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + @override
|
| + EvaluationResultImpl timesError(BinaryExpression node, ErrorResult leftOperand) => leftOperand;
|
| +
|
| + @override
|
| + EvaluationResultImpl timesValid(TypeProvider typeProvider, BinaryExpression node, ValidResult leftOperand) {
|
| + try {
|
| + return _valueOf(leftOperand.value.times(typeProvider, value));
|
| + } on EvaluationException catch (exception) {
|
| + return _error(node, exception.errorCode);
|
| + }
|
| + }
|
| +
|
| + /**
|
| + * Return a result object representing an error associated with the given node.
|
| + *
|
| + * @param node the AST node associated with the error
|
| + * @param code the error code indicating the nature of the error
|
| + * @return a result object representing an error associated with the given node
|
| + */
|
| + ErrorResult _error(AstNode node, ErrorCode code) => new ErrorResult.con1(node, code);
|
| +
|
| + /**
|
| + * Return a result object representing the given value.
|
| + *
|
| + * @param value the value to be represented as a result object
|
| + * @return a result object representing the given value
|
| + */
|
| + ValidResult _valueOf(DartObjectImpl value) => new ValidResult(value);
|
| +}
|
|
|
Chromium Code Reviews
Issue 816693004:
Add observatory_pub_packages snapshot to third_party (Closed)
Base URL: http://dart.googlecode.com/svn/third_party/