Extract incremental resolver classes into separate files.

pkg/analyzer/test/generated/incremental_resolver_test.dart

+// 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.
+
+library engine.incremental_resolver_test;
+
+import 'package:analyzer/src/generated/ast.dart';
+import 'package:analyzer/src/generated/element.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/incremental_resolver.dart';
+import 'package:analyzer/src/generated/java_engine.dart';
+import 'package:analyzer/src/generated/resolver.dart';
+import 'package:analyzer/src/generated/source_io.dart';
+import 'package:analyzer/src/generated/testing/ast_factory.dart';
+import 'package:analyzer/src/generated/testing/element_factory.dart';
+import 'package:unittest/unittest.dart';
+
+import '../reflective_tests.dart';
+import 'parser_test.dart';
+import 'resolver_test.dart';
+import 'test_support.dart';
+
+
+main() {
+  groupSep = ' | ';
+  runReflectiveTests(ScopeBuilderTest);
+  runReflectiveTests(DeclarationMatcherTest);
+  runReflectiveTests(IncrementalResolverTest);
+}
+
+
+class DeclarationMatcherTest extends ResolverTestCase {
+  void test_compilationUnitMatches_false_topLevelVariable() {
+    _assertCompilationUnitMatches(false, r'''
+class C {
+  int m(int p) {
+    return p + p;
+  }
+}''', r'''
+const int ZERO = 0;
+class C {
+  int m(int p) {
+    return p + p;
+  }
+}''');
+  }
+
+  void test_compilationUnitMatches_true_different() {
+    _assertCompilationUnitMatches(true, r'''
+class C {
+  int m(int p) {
+    return p + p;
+  }
+}''', r'''
+class C {
+  int m(int p) {
+    return (p * p) + (p * p);
+  }
+}''');
+  }
+
+  void test_compilationUnitMatches_true_same() {
+    String content = r'''
+class C {
+  int m(int p) {
+    return p + p;
+  }
+}''';
+    _assertCompilationUnitMatches(true, content, content);
+  }
+
+  void test_methodDeclarationMatches_false_localVariable() {
+    _assertMethodMatches(false, r'''
+class C {
+  int m(int p) {
+    return p + p;
+  }
+}''', r'''
+class C {
+  int m(int p) {
+    int product = p * p;
+    return product + product;
+  }
+}''');
+  }
+
+  void test_methodDeclarationMatches_false_parameter() {
+    _assertMethodMatches(false, r'''
+class C {
+  int m(int p) {
+    return p + p;
+  }
+}''', r'''
+class C {
+  int m(int p, int q) {
+    return (p * q) + (q * p);
+  }
+}''');
+  }
+
+  void test_methodDeclarationMatches_true_different() {
+    _assertMethodMatches(true, r'''
+class C {
+  int m(int p) {
+    return p + p;
+  }
+}''', r'''
+class C {
+  int m(int p) {
+    return (p * p) + (p * p);
+  }
+}''');
+  }
+
+  void test_methodDeclarationMatches_true_same() {
+    String content = r'''
+class C {
+  int m(int p) {
+    return p + p;
+  }
+}''';
+    _assertMethodMatches(true, content, content);
+  }
+
+  void _assertCompilationUnitMatches(bool expectMatch, String oldContent,
+      String newContent) {
+    Source source = addSource(oldContent);
+    LibraryElement library = resolve(source);
+    CompilationUnit oldUnit = resolveCompilationUnit(source, library);
+    CompilationUnit newUnit = ParserTestCase.parseCompilationUnit(newContent);
+    DeclarationMatcher matcher = new DeclarationMatcher();
+    expect(matcher.matches(newUnit, oldUnit.element), expectMatch);
+  }
+
+  void _assertMethodMatches(bool expectMatch, String oldContent,
+      String newContent) {
+    Source source = addSource(oldContent);
+    LibraryElement library = resolve(source);
+    CompilationUnit oldUnit = resolveCompilationUnit(source, library);
+    MethodElement element = _getFirstMethod(oldUnit).element as MethodElement;
+    AnalysisContext context = analysisContext;
+    context.setContents(source, newContent);
+    CompilationUnit newUnit = context.parseCompilationUnit(source);
+    MethodDeclaration newMethod = _getFirstMethod(newUnit);
+    DeclarationMatcher matcher = new DeclarationMatcher();
+    expect(matcher.matches(newMethod, element), expectMatch);
+  }
+
+  MethodDeclaration _getFirstMethod(CompilationUnit unit) {
+    ClassDeclaration classNode = unit.declarations[0] as ClassDeclaration;
+    return classNode.members[0] as MethodDeclaration;
+  }
+}
+
+class IncrementalResolverTest extends ResolverTestCase {
+  void test_resolve() {
+    MethodDeclaration method = _resolveMethod(r'''
+class C {
+  int m(int a) {
+    return a + a;
+  }
+}''');
+    BlockFunctionBody body = method.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[0] as ReturnStatement;
+    BinaryExpression expression = statement.expression as BinaryExpression;
+    SimpleIdentifier left = expression.leftOperand as SimpleIdentifier;
+    Element leftElement = left.staticElement;
+    SimpleIdentifier right = expression.rightOperand as SimpleIdentifier;
+    Element rightElement = right.staticElement;
+    expect(leftElement, isNotNull);
+    expect(rightElement, same(leftElement));
+  }
+
+  MethodDeclaration _resolveMethod(String content) {
+    Source source = addSource(content);
+    LibraryElement library = resolve(source);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classNode = unit.declarations[0] as ClassDeclaration;
+    MethodDeclaration method = classNode.members[0] as MethodDeclaration;
+    method.body.accept(new ResolutionEraser());
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    IncrementalResolver resolver =
+        new IncrementalResolver(library, source, typeProvider, errorListener);
+    resolver.resolve(method.body);
+    return method;
+  }
+}
+
+class ScopeBuilderTest extends EngineTestCase {
+  void test_scopeFor_ClassDeclaration() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope =
+        ScopeBuilder.scopeFor(_createResolvedClassDeclaration(), listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is LibraryScope,
+        LibraryScope,
+        scope);
+  }
+
+  void test_scopeFor_ClassTypeAlias() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope =
+        ScopeBuilder.scopeFor(_createResolvedClassTypeAlias(), listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is LibraryScope,
+        LibraryScope,
+        scope);
+  }
+
+  void test_scopeFor_CompilationUnit() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope =
+        ScopeBuilder.scopeFor(_createResolvedCompilationUnit(), listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is LibraryScope,
+        LibraryScope,
+        scope);
+  }
+
+  void test_scopeFor_ConstructorDeclaration() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope =
+        ScopeBuilder.scopeFor(_createResolvedConstructorDeclaration(), listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is ClassScope,
+        ClassScope,
+        scope);
+  }
+
+  void test_scopeFor_ConstructorDeclaration_parameters() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope = ScopeBuilder.scopeFor(
+        _createResolvedConstructorDeclaration().parameters,
+        listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is FunctionScope,
+        FunctionScope,
+        scope);
+  }
+
+  void test_scopeFor_FunctionDeclaration() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope =
+        ScopeBuilder.scopeFor(_createResolvedFunctionDeclaration(), listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is LibraryScope,
+        LibraryScope,
+        scope);
+  }
+
+  void test_scopeFor_FunctionDeclaration_parameters() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope = ScopeBuilder.scopeFor(
+        _createResolvedFunctionDeclaration().functionExpression.parameters,
+        listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is FunctionScope,
+        FunctionScope,
+        scope);
+  }
+
+  void test_scopeFor_FunctionTypeAlias() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope =
+        ScopeBuilder.scopeFor(_createResolvedFunctionTypeAlias(), listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is LibraryScope,
+        LibraryScope,
+        scope);
+  }
+
+  void test_scopeFor_FunctionTypeAlias_parameters() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope =
+        ScopeBuilder.scopeFor(_createResolvedFunctionTypeAlias().parameters, listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is FunctionTypeScope,
+        FunctionTypeScope,
+        scope);
+  }
+
+  void test_scopeFor_MethodDeclaration() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope =
+        ScopeBuilder.scopeFor(_createResolvedMethodDeclaration(), listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is ClassScope,
+        ClassScope,
+        scope);
+  }
+
+  void test_scopeFor_MethodDeclaration_body() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope scope =
+        ScopeBuilder.scopeFor(_createResolvedMethodDeclaration().body, listener);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is FunctionScope,
+        FunctionScope,
+        scope);
+  }
+
+  void test_scopeFor_notInCompilationUnit() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    try {
+      ScopeBuilder.scopeFor(AstFactory.identifier3("x"), listener);
+      fail("Expected AnalysisException");
+    } on AnalysisException catch (exception) {
+      // Expected
+    }
+  }
+
+  void test_scopeFor_null() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    try {
+      ScopeBuilder.scopeFor(null, listener);
+      fail("Expected AnalysisException");
+    } on AnalysisException catch (exception) {
+      // Expected
+    }
+  }
+
+  void test_scopeFor_unresolved() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    try {
+      ScopeBuilder.scopeFor(AstFactory.compilationUnit(), listener);
+      fail("Expected AnalysisException");
+    } on AnalysisException catch (exception) {
+      // Expected
+    }
+  }
+
+  ClassDeclaration _createResolvedClassDeclaration() {
+    CompilationUnit unit = _createResolvedCompilationUnit();
+    String className = "C";
+    ClassDeclaration classNode = AstFactory.classDeclaration(
+        null,
+        className,
+        AstFactory.typeParameterList(),
+        null,
+        null,
+        null);
+    unit.declarations.add(classNode);
+    ClassElement classElement = ElementFactory.classElement2(className);
+    classNode.name.staticElement = classElement;
+    (unit.element as CompilationUnitElementImpl).types =
+        <ClassElement>[classElement];
+    return classNode;
+  }
+
+  ClassTypeAlias _createResolvedClassTypeAlias() {
+    CompilationUnit unit = _createResolvedCompilationUnit();
+    String className = "C";
+    ClassTypeAlias classNode = AstFactory.classTypeAlias(
+        className,
+        AstFactory.typeParameterList(),
+        null,
+        null,
+        null,
+        null);
+    unit.declarations.add(classNode);
+    ClassElement classElement = ElementFactory.classElement2(className);
+    classNode.name.staticElement = classElement;
+    (unit.element as CompilationUnitElementImpl).types =
+        <ClassElement>[classElement];
+    return classNode;
+  }
+
+  CompilationUnit _createResolvedCompilationUnit() {
+    CompilationUnit unit = AstFactory.compilationUnit();
+    LibraryElementImpl library =
+        ElementFactory.library(AnalysisContextFactory.contextWithCore(), "lib");
+    unit.element = library.definingCompilationUnit;
+    return unit;
+  }
+
+  ConstructorDeclaration _createResolvedConstructorDeclaration() {
+    ClassDeclaration classNode = _createResolvedClassDeclaration();
+    String constructorName = "f";
+    ConstructorDeclaration constructorNode = AstFactory.constructorDeclaration(
+        AstFactory.identifier3(constructorName),
+        null,
+        AstFactory.formalParameterList(),
+        null);
+    classNode.members.add(constructorNode);
+    ConstructorElement constructorElement =
+        ElementFactory.constructorElement2(classNode.element, null);
+    constructorNode.element = constructorElement;
+    (classNode.element as ClassElementImpl).constructors =
+        <ConstructorElement>[constructorElement];
+    return constructorNode;
+  }
+
+  FunctionDeclaration _createResolvedFunctionDeclaration() {
+    CompilationUnit unit = _createResolvedCompilationUnit();
+    String functionName = "f";
+    FunctionDeclaration functionNode = AstFactory.functionDeclaration(
+        null,
+        null,
+        functionName,
+        AstFactory.functionExpression());
+    unit.declarations.add(functionNode);
+    FunctionElement functionElement =
+        ElementFactory.functionElement(functionName);
+    functionNode.name.staticElement = functionElement;
+    (unit.element as CompilationUnitElementImpl).functions =
+        <FunctionElement>[functionElement];
+    return functionNode;
+  }
+
+  FunctionTypeAlias _createResolvedFunctionTypeAlias() {
+    CompilationUnit unit = _createResolvedCompilationUnit();
+    FunctionTypeAlias aliasNode = AstFactory.typeAlias(
+        AstFactory.typeName4("A"),
+        "F",
+        AstFactory.typeParameterList(),
+        AstFactory.formalParameterList());
+    unit.declarations.add(aliasNode);
+    SimpleIdentifier aliasName = aliasNode.name;
+    FunctionTypeAliasElement aliasElement =
+        new FunctionTypeAliasElementImpl.forNode(aliasName);
+    aliasName.staticElement = aliasElement;
+    (unit.element as CompilationUnitElementImpl).typeAliases =
+        <FunctionTypeAliasElement>[aliasElement];
+    return aliasNode;
+  }
+
+  MethodDeclaration _createResolvedMethodDeclaration() {
+    ClassDeclaration classNode = _createResolvedClassDeclaration();
+    String methodName = "f";
+    MethodDeclaration methodNode = AstFactory.methodDeclaration(
+        null,
+        null,
+        null,
+        null,
+        AstFactory.identifier3(methodName),
+        AstFactory.formalParameterList());
+    classNode.members.add(methodNode);
+    MethodElement methodElement =
+        ElementFactory.methodElement(methodName, null);
+    methodNode.name.staticElement = methodElement;
+    (classNode.element as ClassElementImpl).methods =
+        <MethodElement>[methodElement];
+    return methodNode;
+  }
+}