| Index: sdk/lib/_internal/lib/js_helper.dart
|
| diff --git a/sdk/lib/_internal/lib/js_helper.dart b/sdk/lib/_internal/lib/js_helper.dart
|
| deleted file mode 100644
|
| index 07109fc4ad9f4931f8f60d5f7d3b3fa3bcb0ec3d..0000000000000000000000000000000000000000
|
| --- a/sdk/lib/_internal/lib/js_helper.dart
|
| +++ /dev/null
|
| @@ -1,3363 +0,0 @@
|
| -// Copyright (c) 2013, 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 _js_helper;
|
| -
|
| -import 'dart:collection';
|
| -import 'dart:_isolate_helper' show
|
| - IsolateNatives,
|
| - leaveJsAsync,
|
| - enterJsAsync,
|
| - isWorker;
|
| -
|
| -import 'dart:async' show Future, DeferredLoadException, Completer;
|
| -
|
| -import 'dart:_foreign_helper' show
|
| - DART_CLOSURE_TO_JS,
|
| - JS,
|
| - JS_CALL_IN_ISOLATE,
|
| - JS_CONST,
|
| - JS_CURRENT_ISOLATE,
|
| - JS_CURRENT_ISOLATE_CONTEXT,
|
| - JS_DART_OBJECT_CONSTRUCTOR,
|
| - JS_EFFECT,
|
| - JS_FUNCTION_CLASS_NAME,
|
| - JS_FUNCTION_TYPE_NAMED_PARAMETERS_TAG,
|
| - JS_FUNCTION_TYPE_OPTIONAL_PARAMETERS_TAG,
|
| - JS_FUNCTION_TYPE_REQUIRED_PARAMETERS_TAG,
|
| - JS_FUNCTION_TYPE_RETURN_TYPE_TAG,
|
| - JS_FUNCTION_TYPE_TAG,
|
| - JS_FUNCTION_TYPE_VOID_RETURN_TAG,
|
| - JS_GET_NAME,
|
| - JS_GET_FLAG,
|
| - JS_HAS_EQUALS,
|
| - JS_IS_INDEXABLE_FIELD_NAME,
|
| - JS_NULL_CLASS_NAME,
|
| - JS_OBJECT_CLASS_NAME,
|
| - JS_OPERATOR_AS_PREFIX,
|
| - JS_OPERATOR_IS_PREFIX,
|
| - JS_SIGNATURE_NAME,
|
| - JS_STRING_CONCAT,
|
| - RAW_DART_FUNCTION_REF;
|
| -
|
| -import 'dart:_interceptors';
|
| -import 'dart:_internal' as _symbol_dev;
|
| -import 'dart:_internal' show MappedIterable;
|
| -
|
| -import 'dart:_js_names' show
|
| - extractKeys,
|
| - mangledNames,
|
| - unmangleGlobalNameIfPreservedAnyways,
|
| - unmangleAllIdentifiersIfPreservedAnyways;
|
| -
|
| -part 'annotations.dart';
|
| -part 'constant_map.dart';
|
| -part 'native_helper.dart';
|
| -part 'regexp_helper.dart';
|
| -part 'string_helper.dart';
|
| -part 'js_rti.dart';
|
| -
|
| -class _Patch {
|
| - const _Patch();
|
| -}
|
| -
|
| -const _Patch patch = const _Patch();
|
| -
|
| -/// No-op method that is called to inform the compiler that preambles might
|
| -/// be needed when executing the resulting JS file in a command-line
|
| -/// JS engine.
|
| -requiresPreamble() {}
|
| -
|
| -bool isJsIndexable(var object, var record) {
|
| - if (record != null) {
|
| - var result = dispatchRecordIndexability(record);
|
| - if (result != null) return result;
|
| - }
|
| - return object is JavaScriptIndexingBehavior;
|
| -}
|
| -
|
| -String S(value) {
|
| - if (value is String) return value;
|
| - if (value is num) {
|
| - if (value != 0) {
|
| - // ""+x is faster than String(x) for integers on most browsers.
|
| - return JS('String', r'"" + (#)', value);
|
| - }
|
| - } else if (true == value) {
|
| - return 'true';
|
| - } else if (false == value) {
|
| - return 'false';
|
| - } else if (value == null) {
|
| - return 'null';
|
| - }
|
| - var res = value.toString();
|
| - if (res is !String) throw new ArgumentError(value);
|
| - return res;
|
| -}
|
| -
|
| -createInvocationMirror(String name, internalName, kind, arguments,
|
| - argumentNames) {
|
| - return new JSInvocationMirror(name,
|
| - internalName,
|
| - kind,
|
| - arguments,
|
| - argumentNames);
|
| -}
|
| -
|
| -createUnmangledInvocationMirror(Symbol symbol, internalName, kind, arguments,
|
| - argumentNames) {
|
| - return new JSInvocationMirror(symbol,
|
| - internalName,
|
| - kind,
|
| - arguments,
|
| - argumentNames);
|
| -}
|
| -
|
| -void throwInvalidReflectionError(String memberName) {
|
| - throw new UnsupportedError("Can't use '$memberName' in reflection "
|
| - "because it is not included in a @MirrorsUsed annotation.");
|
| -}
|
| -
|
| -/// Helper to print the given method information to the console the first
|
| -/// time it is called with it.
|
| -@NoInline()
|
| -void traceHelper(String method) {
|
| - if (JS('bool', '!this.cache')) {
|
| - JS('', 'this.cache = Object.create(null)');
|
| - }
|
| - if (JS('bool', '!this.cache[#]', method)) {
|
| - JS('', 'console.log(#)', method);
|
| - JS('', 'this.cache[#] = true', method);
|
| - }
|
| -}
|
| -
|
| -class JSInvocationMirror implements Invocation {
|
| - static const METHOD = 0;
|
| - static const GETTER = 1;
|
| - static const SETTER = 2;
|
| -
|
| - /// When [_memberName] is a String, it holds the mangled name of this
|
| - /// invocation. When it is a Symbol, it holds the unmangled name.
|
| - var /* String or Symbol */ _memberName;
|
| - final String _internalName;
|
| - final int _kind;
|
| - final List _arguments;
|
| - final List _namedArgumentNames;
|
| - /** Map from argument name to index in _arguments. */
|
| - Map<String, dynamic> _namedIndices = null;
|
| -
|
| - JSInvocationMirror(this._memberName,
|
| - this._internalName,
|
| - this._kind,
|
| - this._arguments,
|
| - this._namedArgumentNames);
|
| -
|
| - Symbol get memberName {
|
| - if (_memberName is Symbol) return _memberName;
|
| - String name = _memberName;
|
| - String unmangledName = mangledNames[name];
|
| - if (unmangledName != null) {
|
| - name = unmangledName.split(':')[0];
|
| - } else {
|
| - if (mangledNames[_internalName] == null) {
|
| - print("Warning: '$name' is used reflectively but not in MirrorsUsed. "
|
| - "This will break minified code.");
|
| - }
|
| - }
|
| - _memberName = new _symbol_dev.Symbol.unvalidated(name);
|
| - return _memberName;
|
| - }
|
| -
|
| - bool get isMethod => _kind == METHOD;
|
| - bool get isGetter => _kind == GETTER;
|
| - bool get isSetter => _kind == SETTER;
|
| - bool get isAccessor => _kind != METHOD;
|
| -
|
| - List get positionalArguments {
|
| - if (isGetter) return const [];
|
| - var argumentCount = _arguments.length - _namedArgumentNames.length;
|
| - if (argumentCount == 0) return const [];
|
| - var list = [];
|
| - for (var index = 0 ; index < argumentCount ; index++) {
|
| - list.add(_arguments[index]);
|
| - }
|
| - return makeLiteralListConst(list);
|
| - }
|
| -
|
| - Map<Symbol, dynamic> get namedArguments {
|
| - // TODO: Make maps const (issue 10471)
|
| - if (isAccessor) return <Symbol, dynamic>{};
|
| - int namedArgumentCount = _namedArgumentNames.length;
|
| - int namedArgumentsStartIndex = _arguments.length - namedArgumentCount;
|
| - if (namedArgumentCount == 0) return <Symbol, dynamic>{};
|
| - var map = new Map<Symbol, dynamic>();
|
| - for (int i = 0; i < namedArgumentCount; i++) {
|
| - map[new _symbol_dev.Symbol.unvalidated(_namedArgumentNames[i])] =
|
| - _arguments[namedArgumentsStartIndex + i];
|
| - }
|
| - return map;
|
| - }
|
| -
|
| - _getCachedInvocation(Object object) {
|
| - var interceptor = getInterceptor(object);
|
| - var receiver = object;
|
| - var name = _internalName;
|
| - var arguments = _arguments;
|
| - // TODO(ngeoffray): If this functionality ever become performance
|
| - // critical, we might want to dynamically change [interceptedNames]
|
| - // to be a JavaScript object with intercepted names as property
|
| - // instead of a JavaScript array.
|
| - // TODO(floitsch): we already add stubs (tear-off getters) as properties
|
| - // in init.interceptedNames.
|
| - // Finish the transition and always use the object as hashtable.
|
| - bool isIntercepted =
|
| - JS("bool",
|
| - 'Object.prototype.hasOwnProperty.call(init.interceptedNames, #) ||'
|
| - '#.indexOf(#) !== -1',
|
| - name, interceptedNames, name);
|
| - if (isIntercepted) {
|
| - receiver = interceptor;
|
| - if (JS('bool', '# === #', object, interceptor)) {
|
| - interceptor = null;
|
| - }
|
| - } else {
|
| - interceptor = null;
|
| - }
|
| - bool isCatchAll = false;
|
| - var method = JS('var', '#[#]', receiver, name);
|
| - if (JS('bool', 'typeof # != "function"', method) ) {
|
| - String baseName = _symbol_dev.Symbol.getName(memberName);
|
| - method = JS('', '#[# + "*"]', receiver, baseName);
|
| - if (method == null) {
|
| - interceptor = getInterceptor(object);
|
| - method = JS('', '#[# + "*"]', interceptor, baseName);
|
| - if (method != null) {
|
| - isIntercepted = true;
|
| - receiver = interceptor;
|
| - } else {
|
| - interceptor = null;
|
| - }
|
| - }
|
| - isCatchAll = true;
|
| - }
|
| - if (JS('bool', 'typeof # == "function"', method)) {
|
| - if (isCatchAll) {
|
| - return new CachedCatchAllInvocation(
|
| - name, method, isIntercepted, interceptor);
|
| - } else {
|
| - return new CachedInvocation(name, method, isIntercepted, interceptor);
|
| - }
|
| - } else {
|
| - // In this case, receiver doesn't implement name. So we should
|
| - // invoke noSuchMethod instead (which will often throw a
|
| - // NoSuchMethodError).
|
| - return new CachedNoSuchMethodInvocation(interceptor);
|
| - }
|
| - }
|
| -
|
| - /// This method is called by [InstanceMirror.delegate].
|
| - static invokeFromMirror(JSInvocationMirror invocation, Object victim) {
|
| - var cached = invocation._getCachedInvocation(victim);
|
| - if (cached.isNoSuchMethod) {
|
| - return cached.invokeOn(victim, invocation);
|
| - } else {
|
| - return cached.invokeOn(victim, invocation._arguments);
|
| - }
|
| - }
|
| -
|
| - static getCachedInvocation(JSInvocationMirror invocation, Object victim) {
|
| - return invocation._getCachedInvocation(victim);
|
| - }
|
| -}
|
| -
|
| -class CachedInvocation {
|
| - // The mangled name of this invocation.
|
| - String mangledName;
|
| -
|
| - /// The JS function to call.
|
| - var jsFunction;
|
| -
|
| - /// True if this is an intercepted call.
|
| - bool isIntercepted;
|
| -
|
| - /// Non-null interceptor if this is an intercepted call through an
|
| - /// [Interceptor].
|
| - Interceptor cachedInterceptor;
|
| -
|
| - CachedInvocation(this.mangledName,
|
| - this.jsFunction,
|
| - this.isIntercepted,
|
| - this.cachedInterceptor);
|
| -
|
| - bool get isNoSuchMethod => false;
|
| - bool get isGetterStub => JS("bool", "!!#.\$getterStub", jsFunction);
|
| -
|
| - /// Applies [jsFunction] to [victim] with [arguments].
|
| - /// Users of this class must take care to check the arguments first.
|
| - invokeOn(Object victim, List arguments) {
|
| - var receiver = victim;
|
| - if (!isIntercepted) {
|
| - if (arguments is! JSArray) arguments = new List.from(arguments);
|
| - } else {
|
| - arguments = [victim]..addAll(arguments);
|
| - if (cachedInterceptor != null) receiver = cachedInterceptor;
|
| - }
|
| - return JS("var", "#.apply(#, #)", jsFunction, receiver, arguments);
|
| - }
|
| -}
|
| -
|
| -class CachedCatchAllInvocation extends CachedInvocation {
|
| - final ReflectionInfo info;
|
| -
|
| - CachedCatchAllInvocation(String name,
|
| - jsFunction,
|
| - bool isIntercepted,
|
| - Interceptor cachedInterceptor)
|
| - : info = new ReflectionInfo(jsFunction),
|
| - super(name, jsFunction, isIntercepted, cachedInterceptor);
|
| -
|
| - bool get isGetterStub => false;
|
| -
|
| - invokeOn(Object victim, List arguments) {
|
| - var receiver = victim;
|
| - int providedArgumentCount;
|
| - int fullParameterCount =
|
| - info.requiredParameterCount + info.optionalParameterCount;
|
| - if (!isIntercepted) {
|
| - if (arguments is JSArray) {
|
| - providedArgumentCount = arguments.length;
|
| - // If we need to add extra arguments before calling, we have
|
| - // to copy the arguments array.
|
| - if (providedArgumentCount < fullParameterCount) {
|
| - arguments = new List.from(arguments);
|
| - }
|
| - } else {
|
| - arguments = new List.from(arguments);
|
| - providedArgumentCount = arguments.length;
|
| - }
|
| - } else {
|
| - arguments = [victim]..addAll(arguments);
|
| - if (cachedInterceptor != null) receiver = cachedInterceptor;
|
| - providedArgumentCount = arguments.length - 1;
|
| - }
|
| - if (info.areOptionalParametersNamed &&
|
| - (providedArgumentCount > info.requiredParameterCount)) {
|
| - throw new UnimplementedNoSuchMethodError(
|
| - "Invocation of unstubbed method '${info.reflectionName}'"
|
| - " with ${arguments.length} arguments.");
|
| - } else if (providedArgumentCount < info.requiredParameterCount) {
|
| - throw new UnimplementedNoSuchMethodError(
|
| - "Invocation of unstubbed method '${info.reflectionName}'"
|
| - " with $providedArgumentCount arguments (too few).");
|
| - } else if (providedArgumentCount > fullParameterCount) {
|
| - throw new UnimplementedNoSuchMethodError(
|
| - "Invocation of unstubbed method '${info.reflectionName}'"
|
| - " with $providedArgumentCount arguments (too many).");
|
| - }
|
| - for (int i = providedArgumentCount; i < fullParameterCount; i++) {
|
| - arguments.add(getMetadata(info.defaultValue(i)));
|
| - }
|
| - return JS("var", "#.apply(#, #)", jsFunction, receiver, arguments);
|
| - }
|
| -}
|
| -
|
| -class CachedNoSuchMethodInvocation {
|
| - /// Non-null interceptor if this is an intercepted call through an
|
| - /// [Interceptor].
|
| - var interceptor;
|
| -
|
| - CachedNoSuchMethodInvocation(this.interceptor);
|
| -
|
| - bool get isNoSuchMethod => true;
|
| - bool get isGetterStub => false;
|
| -
|
| - invokeOn(Object victim, Invocation invocation) {
|
| - var receiver = (interceptor == null) ? victim : interceptor;
|
| - return receiver.noSuchMethod(invocation);
|
| - }
|
| -}
|
| -
|
| -class ReflectionInfo {
|
| - static const int REQUIRED_PARAMETERS_INFO = 0;
|
| - static const int OPTIONAL_PARAMETERS_INFO = 1;
|
| - static const int FUNCTION_TYPE_INDEX = 2;
|
| - static const int FIRST_DEFAULT_ARGUMENT = 3;
|
| -
|
| - /// A JavaScript function object.
|
| - final jsFunction;
|
| -
|
| - /// Raw reflection information.
|
| - final List data;
|
| -
|
| - /// Is this a getter or a setter.
|
| - final bool isAccessor;
|
| -
|
| - /// Number of required parameters.
|
| - final int requiredParameterCount;
|
| -
|
| - /// Number of optional parameters.
|
| - final int optionalParameterCount;
|
| -
|
| - /// Are optional parameters named.
|
| - final bool areOptionalParametersNamed;
|
| -
|
| - /// Either an index to the function type in [:init.metadata:] or a JavaScript
|
| - /// function object which can compute such a type (presumably due to free
|
| - /// type variables).
|
| - final functionType;
|
| -
|
| - List cachedSortedIndices;
|
| -
|
| - ReflectionInfo.internal(this.jsFunction,
|
| - this.data,
|
| - this.isAccessor,
|
| - this.requiredParameterCount,
|
| - this.optionalParameterCount,
|
| - this.areOptionalParametersNamed,
|
| - this.functionType);
|
| -
|
| - factory ReflectionInfo(jsFunction) {
|
| - List data = JS('JSExtendableArray|Null', r'#.$reflectionInfo', jsFunction);
|
| - if (data == null) return null;
|
| - data = JSArray.markFixedList(data);
|
| -
|
| - int requiredParametersInfo =
|
| - JS('int', '#[#]', data, REQUIRED_PARAMETERS_INFO);
|
| - int requiredParameterCount = JS('int', '# >> 1', requiredParametersInfo);
|
| - bool isAccessor = (requiredParametersInfo & 1) == 1;
|
| -
|
| - int optionalParametersInfo =
|
| - JS('int', '#[#]', data, OPTIONAL_PARAMETERS_INFO);
|
| - int optionalParameterCount = JS('int', '# >> 1', optionalParametersInfo);
|
| - bool areOptionalParametersNamed = (optionalParametersInfo & 1) == 1;
|
| -
|
| - var functionType = JS('', '#[#]', data, FUNCTION_TYPE_INDEX);
|
| - return new ReflectionInfo.internal(
|
| - jsFunction, data, isAccessor, requiredParameterCount,
|
| - optionalParameterCount, areOptionalParametersNamed, functionType);
|
| - }
|
| -
|
| - String parameterName(int parameter) {
|
| - int metadataIndex;
|
| - if (JS_GET_FLAG('MUST_RETAIN_METADATA')) {
|
| - metadataIndex = JS('int', '#[2 * # + # + #]', data,
|
| - parameter, optionalParameterCount, FIRST_DEFAULT_ARGUMENT);
|
| - } else {
|
| - metadataIndex = JS('int', '#[# + # + #]', data,
|
| - parameter, optionalParameterCount, FIRST_DEFAULT_ARGUMENT);
|
| - }
|
| - return JS('String', 'init.metadata[#]', metadataIndex);
|
| - }
|
| -
|
| - List<int> parameterMetadataAnnotations(int parameter) {
|
| - if (!JS_GET_FLAG('MUST_RETAIN_METADATA')) {
|
| - throw new StateError('metadata has not been preserved');
|
| - } else {
|
| - return JS('', '#[2 * # + # + # + 1]', data, parameter,
|
| - optionalParameterCount, FIRST_DEFAULT_ARGUMENT);
|
| - }
|
| - }
|
| -
|
| - int defaultValue(int parameter) {
|
| - if (parameter < requiredParameterCount) return null;
|
| - return JS('int', '#[# + # - #]', data,
|
| - FIRST_DEFAULT_ARGUMENT, parameter, requiredParameterCount);
|
| - }
|
| -
|
| - /// Returns the default value of the [parameter]th entry of the list of
|
| - /// parameters sorted by name.
|
| - int defaultValueInOrder(int parameter) {
|
| - if (parameter < requiredParameterCount) return null;
|
| -
|
| - if (!areOptionalParametersNamed || optionalParameterCount == 1) {
|
| - return defaultValue(parameter);
|
| - }
|
| -
|
| - int index = sortedIndex(parameter - requiredParameterCount);
|
| - return defaultValue(index);
|
| - }
|
| -
|
| - /// Returns the default value of the [parameter]th entry of the list of
|
| - /// parameters sorted by name.
|
| - String parameterNameInOrder(int parameter) {
|
| - if (parameter < requiredParameterCount) return null;
|
| -
|
| - if (!areOptionalParametersNamed ||
|
| - optionalParameterCount == 1) {
|
| - return parameterName(parameter);
|
| - }
|
| -
|
| - int index = sortedIndex(parameter - requiredParameterCount);
|
| - return parameterName(index);
|
| - }
|
| -
|
| - /// Computes the index of the parameter in the list of named parameters sorted
|
| - /// by their name.
|
| - int sortedIndex(int unsortedIndex) {
|
| - if (cachedSortedIndices == null) {
|
| - // TODO(karlklose): cache this between [ReflectionInfo] instances or cache
|
| - // [ReflectionInfo] instances by [jsFunction].
|
| - cachedSortedIndices = new List(optionalParameterCount);
|
| - Map<String, int> positions = <String, int>{};
|
| - for (int i = 0; i < optionalParameterCount; i++) {
|
| - int index = requiredParameterCount + i;
|
| - positions[parameterName(index)] = index;
|
| - }
|
| - int index = 0;
|
| - (positions.keys.toList()..sort()).forEach((String name) {
|
| - cachedSortedIndices[index++] = positions[name];
|
| - });
|
| - }
|
| - return cachedSortedIndices[unsortedIndex];
|
| - }
|
| -
|
| - @NoInline()
|
| - computeFunctionRti(jsConstructor) {
|
| - if (JS('bool', 'typeof # == "number"', functionType)) {
|
| - return getMetadata(functionType);
|
| - } else if (JS('bool', 'typeof # == "function"', functionType)) {
|
| - var fakeInstance = JS('', 'new #()', jsConstructor);
|
| - setRuntimeTypeInfo(
|
| - fakeInstance, JS('JSExtendableArray', '#["<>"]', fakeInstance));
|
| - return JS('=Object|Null', r'#.apply({$receiver:#})',
|
| - functionType, fakeInstance);
|
| - } else {
|
| - throw new RuntimeError('Unexpected function type');
|
| - }
|
| - }
|
| -
|
| - String get reflectionName => JS('String', r'#.$reflectionName', jsFunction);
|
| -}
|
| -
|
| -getMetadata(int index) => JS('', 'init.metadata[#]', index);
|
| -
|
| -class Primitives {
|
| - /// Isolate-unique ID for caching [JsClosureMirror.function].
|
| - /// Note the initial value is used by the first isolate (or if there are no
|
| - /// isolates), new isolates will update this value to avoid conflicts by
|
| - /// calling [initializeStatics].
|
| - static String mirrorFunctionCacheName = '\$cachedFunction';
|
| -
|
| - /// Isolate-unique ID for caching [JsInstanceMirror._invoke].
|
| - static String mirrorInvokeCacheName = '\$cachedInvocation';
|
| -
|
| - /// Called when creating a new isolate (see _IsolateContext constructor in
|
| - /// isolate_helper.dart).
|
| - /// Please don't add complicated code to this method, as it will impact
|
| - /// start-up performance.
|
| - static void initializeStatics(int id) {
|
| - // Benchmarking shows significant performance improvements if this is a
|
| - // fixed value.
|
| - mirrorFunctionCacheName += '_$id';
|
| - mirrorInvokeCacheName += '_$id';
|
| - }
|
| -
|
| - static int objectHashCode(object) {
|
| - int hash = JS('int|Null', r'#.$identityHash', object);
|
| - if (hash == null) {
|
| - hash = JS('int', '(Math.random() * 0x3fffffff) | 0');
|
| - JS('void', r'#.$identityHash = #', object, hash);
|
| - }
|
| - return JS('int', '#', hash);
|
| - }
|
| -
|
| - static _throwFormatException(String string) {
|
| - throw new FormatException(string);
|
| - }
|
| -
|
| - static int parseInt(String source,
|
| - int radix,
|
| - int handleError(String source)) {
|
| - if (handleError == null) handleError = _throwFormatException;
|
| -
|
| - checkString(source);
|
| - var match = JS('JSExtendableArray|Null',
|
| - r'/^\s*[+-]?((0x[a-f0-9]+)|(\d+)|([a-z0-9]+))\s*$/i.exec(#)',
|
| - source);
|
| - int digitsIndex = 1;
|
| - int hexIndex = 2;
|
| - int decimalIndex = 3;
|
| - int nonDecimalHexIndex = 4;
|
| - if (radix == null) {
|
| - radix = 10;
|
| - if (match != null) {
|
| - if (match[hexIndex] != null) {
|
| - // Cannot fail because we know that the digits are all hex.
|
| - return JS('num', r'parseInt(#, 16)', source);
|
| - }
|
| - if (match[decimalIndex] != null) {
|
| - // Cannot fail because we know that the digits are all decimal.
|
| - return JS('num', r'parseInt(#, 10)', source);
|
| - }
|
| - return handleError(source);
|
| - }
|
| - } else {
|
| - if (radix is! int) throw new ArgumentError("Radix is not an integer");
|
| - if (radix < 2 || radix > 36) {
|
| - throw new RangeError("Radix $radix not in range 2..36");
|
| - }
|
| - if (match != null) {
|
| - if (radix == 10 && match[decimalIndex] != null) {
|
| - // Cannot fail because we know that the digits are all decimal.
|
| - return JS('num', r'parseInt(#, 10)', source);
|
| - }
|
| - if (radix < 10 || match[decimalIndex] == null) {
|
| - // We know that the characters must be ASCII as otherwise the
|
| - // regexp wouldn't have matched. Lowercasing by doing `| 0x20` is thus
|
| - // guaranteed to be a safe operation, since it preserves digits
|
| - // and lower-cases ASCII letters.
|
| - int maxCharCode;
|
| - if (radix <= 10) {
|
| - // Allow all digits less than the radix. For example 0, 1, 2 for
|
| - // radix 3.
|
| - // "0".codeUnitAt(0) + radix - 1;
|
| - maxCharCode = 0x30 + radix - 1;
|
| - } else {
|
| - // Letters are located after the digits in ASCII. Therefore we
|
| - // only check for the character code. The regexp above made already
|
| - // sure that the string does not contain anything but digits or
|
| - // letters.
|
| - // "a".codeUnitAt(0) + (radix - 10) - 1;
|
| - maxCharCode = 0x61 + radix - 10 - 1;
|
| - }
|
| - String digitsPart = match[digitsIndex];
|
| - for (int i = 0; i < digitsPart.length; i++) {
|
| - int characterCode = digitsPart.codeUnitAt(0) | 0x20;
|
| - if (digitsPart.codeUnitAt(i) > maxCharCode) {
|
| - return handleError(source);
|
| - }
|
| - }
|
| - }
|
| - }
|
| - }
|
| - if (match == null) return handleError(source);
|
| - return JS('num', r'parseInt(#, #)', source, radix);
|
| - }
|
| -
|
| - static double parseDouble(String source, double handleError(String source)) {
|
| - checkString(source);
|
| - if (handleError == null) handleError = _throwFormatException;
|
| - // Notice that JS parseFloat accepts garbage at the end of the string.
|
| - // Accept only:
|
| - // - [+/-]NaN
|
| - // - [+/-]Infinity
|
| - // - a Dart double literal
|
| - // We do allow leading or trailing whitespace.
|
| - if (!JS('bool',
|
| - r'/^\s*[+-]?(?:Infinity|NaN|'
|
| - r'(?:\.\d+|\d+(?:\.\d*)?)(?:[eE][+-]?\d+)?)\s*$/.test(#)',
|
| - source)) {
|
| - return handleError(source);
|
| - }
|
| - var result = JS('num', r'parseFloat(#)', source);
|
| - if (result.isNaN) {
|
| - var trimmed = source.trim();
|
| - if (trimmed == 'NaN' || trimmed == '+NaN' || trimmed == '-NaN') {
|
| - return result;
|
| - }
|
| - return handleError(source);
|
| - }
|
| - return result;
|
| - }
|
| -
|
| - /** [: r"$".codeUnitAt(0) :] */
|
| - static const int DOLLAR_CHAR_VALUE = 36;
|
| -
|
| - /// Creates a string containing the complete type for the class [className]
|
| - /// with the given type arguments.
|
| - ///
|
| - /// In minified mode, uses the unminified names if available.
|
| - static String formatType(String className, List typeArguments) {
|
| - return unmangleAllIdentifiersIfPreservedAnyways
|
| - ('$className${joinArguments(typeArguments, 0)}');
|
| - }
|
| -
|
| - /// Returns the type of [object] as a string (including type arguments).
|
| - ///
|
| - /// In minified mode, uses the unminified names if available.
|
| - static String objectTypeName(Object object) {
|
| - String name = constructorNameFallback(getInterceptor(object));
|
| - if (name == 'Object') {
|
| - // Try to decompile the constructor by turning it into a string and get
|
| - // the name out of that. If the decompiled name is a string containing an
|
| - // identifier, we use that instead of the very generic 'Object'.
|
| - var decompiled =
|
| - JS('var', r'#.match(/^\s*function\s*(\S*)\s*\(/)[1]',
|
| - JS('var', r'String(#.constructor)', object));
|
| - if (decompiled is String)
|
| - if (JS('bool', r'/^\w+$/.test(#)', decompiled))
|
| - name = decompiled;
|
| - }
|
| - // TODO(kasperl): If the namer gave us a fresh global name, we may
|
| - // want to remove the numeric suffix that makes it unique too.
|
| - if (name.length > 1 && identical(name.codeUnitAt(0), DOLLAR_CHAR_VALUE)) {
|
| - name = name.substring(1);
|
| - }
|
| - return formatType(name, getRuntimeTypeInfo(object));
|
| - }
|
| -
|
| - /// In minified mode, uses the unminified names if available.
|
| - static String objectToString(Object object) {
|
| - String name = objectTypeName(object);
|
| - return "Instance of '$name'";
|
| - }
|
| -
|
| - static num dateNow() => JS('num', r'Date.now()');
|
| -
|
| - static void initTicker() {
|
| - if (timerFrequency != null) return;
|
| - // Start with low-resolution. We overwrite the fields if we find better.
|
| - timerFrequency = 1000;
|
| - timerTicks = dateNow;
|
| - if (JS('bool', 'typeof window == "undefined"')) return;
|
| - var window = JS('var', 'window');
|
| - if (window == null) return;
|
| - var performance = JS('var', '#.performance', window);
|
| - if (performance == null) return;
|
| - if (JS('bool', 'typeof #.now != "function"', performance)) return;
|
| - timerFrequency = 1000000;
|
| - timerTicks = () => (1000 * JS('num', '#.now()', performance)).floor();
|
| - }
|
| -
|
| - static int timerFrequency;
|
| - static Function timerTicks;
|
| -
|
| - static bool get isD8 {
|
| - return JS('bool',
|
| - 'typeof version == "function"'
|
| - ' && typeof os == "object" && "system" in os');
|
| - }
|
| -
|
| - static bool get isJsshell {
|
| - return JS('bool',
|
| - 'typeof version == "function" && typeof system == "function"');
|
| - }
|
| -
|
| - static String currentUri() {
|
| - requiresPreamble();
|
| - // In a browser return self.location.href.
|
| - if (JS('bool', '!!self.location')) {
|
| - return JS('String', 'self.location.href');
|
| - }
|
| -
|
| - return null;
|
| - }
|
| -
|
| - // This is to avoid stack overflows due to very large argument arrays in
|
| - // apply(). It fixes http://dartbug.com/6919
|
| - static String _fromCharCodeApply(List<int> array) {
|
| - String result = "";
|
| - const kMaxApply = 500;
|
| - int end = array.length;
|
| - for (var i = 0; i < end; i += kMaxApply) {
|
| - var subarray;
|
| - if (end <= kMaxApply) {
|
| - subarray = array;
|
| - } else {
|
| - subarray = JS('JSExtendableArray', r'#.slice(#, #)', array,
|
| - i, i + kMaxApply < end ? i + kMaxApply : end);
|
| - }
|
| - result = JS('String', '# + String.fromCharCode.apply(#, #)',
|
| - result, null, subarray);
|
| - }
|
| - return result;
|
| - }
|
| -
|
| - static String stringFromCodePoints(codePoints) {
|
| - List<int> a = <int>[];
|
| - for (var i in codePoints) {
|
| - if (i is !int) throw new ArgumentError(i);
|
| - if (i <= 0xffff) {
|
| - a.add(i);
|
| - } else if (i <= 0x10ffff) {
|
| - a.add(0xd800 + ((((i - 0x10000) >> 10) & 0x3ff)));
|
| - a.add(0xdc00 + (i & 0x3ff));
|
| - } else {
|
| - throw new ArgumentError(i);
|
| - }
|
| - }
|
| - return _fromCharCodeApply(a);
|
| - }
|
| -
|
| - static String stringFromCharCodes(charCodes) {
|
| - for (var i in charCodes) {
|
| - if (i is !int) throw new ArgumentError(i);
|
| - if (i < 0) throw new ArgumentError(i);
|
| - if (i > 0xffff) return stringFromCodePoints(charCodes);
|
| - }
|
| - return _fromCharCodeApply(charCodes);
|
| - }
|
| -
|
| - static String stringFromCharCode(charCode) {
|
| - if (0 <= charCode) {
|
| - if (charCode <= 0xffff) {
|
| - return JS('String', 'String.fromCharCode(#)', charCode);
|
| - }
|
| - if (charCode <= 0x10ffff) {
|
| - var bits = charCode - 0x10000;
|
| - var low = 0xDC00 | (bits & 0x3ff);
|
| - var high = 0xD800 | (bits >> 10);
|
| - return JS('String', 'String.fromCharCode(#, #)', high, low);
|
| - }
|
| - }
|
| - throw new RangeError.range(charCode, 0, 0x10ffff);
|
| - }
|
| -
|
| - static String stringConcatUnchecked(String string1, String string2) {
|
| - return JS_STRING_CONCAT(string1, string2);
|
| - }
|
| -
|
| - static String flattenString(String str) {
|
| - return JS('', "#.charCodeAt(0) == 0 ? # : #", str, str, str);
|
| - }
|
| -
|
| - static String getTimeZoneName(receiver) {
|
| - // Firefox and Chrome emit the timezone in parenthesis.
|
| - // Example: "Wed May 16 2012 21:13:00 GMT+0200 (CEST)".
|
| - // We extract this name using a regexp.
|
| - var d = lazyAsJsDate(receiver);
|
| - List match = JS('JSArray|Null', r'/\((.*)\)/.exec(#.toString())', d);
|
| - if (match != null) return match[1];
|
| -
|
| - // Internet Explorer 10+ emits the zone name without parenthesis:
|
| - // Example: Thu Oct 31 14:07:44 PDT 2013
|
| - match = JS('JSArray|Null',
|
| - // Thu followed by a space.
|
| - r'/^[A-Z,a-z]{3}\s'
|
| - // Oct 31 followed by space.
|
| - r'[A-Z,a-z]{3}\s\d+\s'
|
| - // Time followed by a space.
|
| - r'\d{2}:\d{2}:\d{2}\s'
|
| - // The time zone name followed by a space.
|
| - r'([A-Z]{3,5})\s'
|
| - // The year.
|
| - r'\d{4}$/'
|
| - '.exec(#.toString())',
|
| - d);
|
| - if (match != null) return match[1];
|
| -
|
| - // IE 9 and Opera don't provide the zone name. We fall back to emitting the
|
| - // UTC/GMT offset.
|
| - // Example (IE9): Wed Nov 20 09:51:00 UTC+0100 2013
|
| - // (Opera): Wed Nov 20 2013 11:03:38 GMT+0100
|
| - match = JS('JSArray|Null', r'/(?:GMT|UTC)[+-]\d{4}/.exec(#.toString())', d);
|
| - if (match != null) return match[0];
|
| - return "";
|
| - }
|
| -
|
| - static int getTimeZoneOffsetInMinutes(receiver) {
|
| - // Note that JS and Dart disagree on the sign of the offset.
|
| - return -JS('int', r'#.getTimezoneOffset()', lazyAsJsDate(receiver));
|
| - }
|
| -
|
| - static valueFromDecomposedDate(years, month, day, hours, minutes, seconds,
|
| - milliseconds, isUtc) {
|
| - final int MAX_MILLISECONDS_SINCE_EPOCH = 8640000000000000;
|
| - checkInt(years);
|
| - checkInt(month);
|
| - checkInt(day);
|
| - checkInt(hours);
|
| - checkInt(minutes);
|
| - checkInt(seconds);
|
| - checkInt(milliseconds);
|
| - checkBool(isUtc);
|
| - var jsMonth = month - 1;
|
| - var value;
|
| - if (isUtc) {
|
| - value = JS('num', r'Date.UTC(#, #, #, #, #, #, #)',
|
| - years, jsMonth, day, hours, minutes, seconds, milliseconds);
|
| - } else {
|
| - value = JS('num', r'new Date(#, #, #, #, #, #, #).valueOf()',
|
| - years, jsMonth, day, hours, minutes, seconds, milliseconds);
|
| - }
|
| - if (value.isNaN ||
|
| - value < -MAX_MILLISECONDS_SINCE_EPOCH ||
|
| - value > MAX_MILLISECONDS_SINCE_EPOCH) {
|
| - return null;
|
| - }
|
| - if (years <= 0 || years < 100) return patchUpY2K(value, years, isUtc);
|
| - return value;
|
| - }
|
| -
|
| - static patchUpY2K(value, years, isUtc) {
|
| - var date = JS('', r'new Date(#)', value);
|
| - if (isUtc) {
|
| - JS('num', r'#.setUTCFullYear(#)', date, years);
|
| - } else {
|
| - JS('num', r'#.setFullYear(#)', date, years);
|
| - }
|
| - return JS('num', r'#.valueOf()', date);
|
| - }
|
| -
|
| - // Lazily keep a JS Date stored in the JS object.
|
| - static lazyAsJsDate(receiver) {
|
| - if (JS('bool', r'#.date === (void 0)', receiver)) {
|
| - JS('void', r'#.date = new Date(#)', receiver,
|
| - receiver.millisecondsSinceEpoch);
|
| - }
|
| - return JS('var', r'#.date', receiver);
|
| - }
|
| -
|
| - // The getters for date and time parts below add a positive integer to ensure
|
| - // that the result is really an integer, because the JavaScript implementation
|
| - // may return -0.0 instead of 0.
|
| -
|
| - static getYear(receiver) {
|
| - return (receiver.isUtc)
|
| - ? JS('int', r'(#.getUTCFullYear() + 0)', lazyAsJsDate(receiver))
|
| - : JS('int', r'(#.getFullYear() + 0)', lazyAsJsDate(receiver));
|
| - }
|
| -
|
| - static getMonth(receiver) {
|
| - return (receiver.isUtc)
|
| - ? JS('int', r'#.getUTCMonth() + 1', lazyAsJsDate(receiver))
|
| - : JS('int', r'#.getMonth() + 1', lazyAsJsDate(receiver));
|
| - }
|
| -
|
| - static getDay(receiver) {
|
| - return (receiver.isUtc)
|
| - ? JS('int', r'(#.getUTCDate() + 0)', lazyAsJsDate(receiver))
|
| - : JS('int', r'(#.getDate() + 0)', lazyAsJsDate(receiver));
|
| - }
|
| -
|
| - static getHours(receiver) {
|
| - return (receiver.isUtc)
|
| - ? JS('int', r'(#.getUTCHours() + 0)', lazyAsJsDate(receiver))
|
| - : JS('int', r'(#.getHours() + 0)', lazyAsJsDate(receiver));
|
| - }
|
| -
|
| - static getMinutes(receiver) {
|
| - return (receiver.isUtc)
|
| - ? JS('int', r'(#.getUTCMinutes() + 0)', lazyAsJsDate(receiver))
|
| - : JS('int', r'(#.getMinutes() + 0)', lazyAsJsDate(receiver));
|
| - }
|
| -
|
| - static getSeconds(receiver) {
|
| - return (receiver.isUtc)
|
| - ? JS('int', r'(#.getUTCSeconds() + 0)', lazyAsJsDate(receiver))
|
| - : JS('int', r'(#.getSeconds() + 0)', lazyAsJsDate(receiver));
|
| - }
|
| -
|
| - static getMilliseconds(receiver) {
|
| - return (receiver.isUtc)
|
| - ? JS('int', r'(#.getUTCMilliseconds() + 0)', lazyAsJsDate(receiver))
|
| - : JS('int', r'(#.getMilliseconds() + 0)', lazyAsJsDate(receiver));
|
| - }
|
| -
|
| - static getWeekday(receiver) {
|
| - int weekday = (receiver.isUtc)
|
| - ? JS('int', r'#.getUTCDay() + 0', lazyAsJsDate(receiver))
|
| - : JS('int', r'#.getDay() + 0', lazyAsJsDate(receiver));
|
| - // Adjust by one because JS weeks start on Sunday.
|
| - return (weekday + 6) % 7 + 1;
|
| - }
|
| -
|
| - static valueFromDateString(str) {
|
| - if (str is !String) throw new ArgumentError(str);
|
| - var value = JS('num', r'Date.parse(#)', str);
|
| - if (value.isNaN) throw new ArgumentError(str);
|
| - return value;
|
| - }
|
| -
|
| - static getProperty(object, key) {
|
| - if (object == null || object is bool || object is num || object is String) {
|
| - throw new ArgumentError(object);
|
| - }
|
| - return JS('var', '#[#]', object, key);
|
| - }
|
| -
|
| - static void setProperty(object, key, value) {
|
| - if (object == null || object is bool || object is num || object is String) {
|
| - throw new ArgumentError(object);
|
| - }
|
| - JS('void', '#[#] = #', object, key, value);
|
| - }
|
| -
|
| - static functionNoSuchMethod(function,
|
| - List positionalArguments,
|
| - Map<String, dynamic> namedArguments) {
|
| - int argumentCount = 0;
|
| - List arguments = [];
|
| - List namedArgumentList = [];
|
| -
|
| - if (positionalArguments != null) {
|
| - argumentCount += positionalArguments.length;
|
| - arguments.addAll(positionalArguments);
|
| - }
|
| -
|
| - String names = '';
|
| - if (namedArguments != null && !namedArguments.isEmpty) {
|
| - namedArguments.forEach((String name, argument) {
|
| - names = '$names\$$name';
|
| - namedArgumentList.add(name);
|
| - arguments.add(argument);
|
| - argumentCount++;
|
| - });
|
| - }
|
| -
|
| - String selectorName =
|
| - '${JS_GET_NAME("CALL_PREFIX")}\$$argumentCount$names';
|
| -
|
| - return function.noSuchMethod(
|
| - createUnmangledInvocationMirror(
|
| - #call,
|
| - selectorName,
|
| - JSInvocationMirror.METHOD,
|
| - arguments,
|
| - namedArgumentList));
|
| - }
|
| -
|
| - static applyFunction(Function function,
|
| - List positionalArguments,
|
| - Map<String, dynamic> namedArguments) {
|
| - if (namedArguments != null && !namedArguments.isEmpty) {
|
| - // TODO(ahe): The following code can be shared with
|
| - // JsInstanceMirror.invoke.
|
| - var interceptor = getInterceptor(function);
|
| - var jsFunction = JS('', '#["call*"]', interceptor);
|
| -
|
| - if (jsFunction == null) {
|
| - return functionNoSuchMethod(
|
| - function, positionalArguments, namedArguments);
|
| - }
|
| - ReflectionInfo info = new ReflectionInfo(jsFunction);
|
| - if (info == null || !info.areOptionalParametersNamed) {
|
| - return functionNoSuchMethod(
|
| - function, positionalArguments, namedArguments);
|
| - }
|
| -
|
| - if (positionalArguments != null) {
|
| - positionalArguments = new List.from(positionalArguments);
|
| - } else {
|
| - positionalArguments = [];
|
| - }
|
| - // Check the number of positional arguments is valid.
|
| - if (info.requiredParameterCount != positionalArguments.length) {
|
| - return functionNoSuchMethod(
|
| - function, positionalArguments, namedArguments);
|
| - }
|
| - var defaultArguments = new Map();
|
| - for (int i = 0; i < info.optionalParameterCount; i++) {
|
| - int index = i + info.requiredParameterCount;
|
| - var parameterName = info.parameterNameInOrder(index);
|
| - var value = info.defaultValueInOrder(index);
|
| - var defaultValue = getMetadata(value);
|
| - defaultArguments[parameterName] = defaultValue;
|
| - }
|
| - bool bad = false;
|
| - namedArguments.forEach((String parameter, value) {
|
| - if (defaultArguments.containsKey(parameter)) {
|
| - defaultArguments[parameter] = value;
|
| - } else {
|
| - // Extraneous named argument.
|
| - bad = true;
|
| - }
|
| - });
|
| - if (bad) {
|
| - return functionNoSuchMethod(
|
| - function, positionalArguments, namedArguments);
|
| - }
|
| - positionalArguments.addAll(defaultArguments.values);
|
| - return JS('', '#.apply(#, #)', jsFunction, function, positionalArguments);
|
| - }
|
| -
|
| - int argumentCount = 0;
|
| - List arguments = [];
|
| -
|
| - if (positionalArguments != null) {
|
| - argumentCount += positionalArguments.length;
|
| - arguments.addAll(positionalArguments);
|
| - }
|
| -
|
| - String selectorName = '${JS_GET_NAME("CALL_PREFIX")}\$$argumentCount';
|
| - var jsFunction = JS('var', '#[#]', function, selectorName);
|
| - if (jsFunction == null) {
|
| -
|
| - // TODO(ahe): This might occur for optional arguments if there is no call
|
| - // selector with that many arguments.
|
| -
|
| - return
|
| - functionNoSuchMethod(function, positionalArguments, namedArguments);
|
| - }
|
| - // We bound 'this' to [function] because of how we compile
|
| - // closures: escaped local variables are stored and accessed through
|
| - // [function].
|
| - return JS('var', '#.apply(#, #)', jsFunction, function, arguments);
|
| - }
|
| -
|
| - static _mangledNameMatchesType(String mangledName, TypeImpl type) {
|
| - return JS('bool', '# == #', mangledName, type._typeName);
|
| - }
|
| -
|
| - static bool identicalImplementation(a, b) {
|
| - return JS('bool', '# == null', a)
|
| - ? JS('bool', '# == null', b)
|
| - : JS('bool', '# === #', a, b);
|
| - }
|
| -
|
| - static StackTrace extractStackTrace(Error error) {
|
| - return getTraceFromException(JS('', r'#.$thrownJsError', error));
|
| - }
|
| -}
|
| -
|
| -/// Helper class for allocating and using JS object literals as caches.
|
| -class JsCache {
|
| - /// Returns a JavaScript object suitable for use as a cache.
|
| - static allocate() {
|
| - var result = JS('=Object', 'Object.create(null)');
|
| - // Deleting a property makes V8 assume that it shouldn't create a hidden
|
| - // class for [result] and map transitions. Although these map transitions
|
| - // pay off if there are many cache hits for the same keys, it becomes
|
| - // really slow when there aren't many repeated hits.
|
| - JS('void', '#.x=0', result);
|
| - JS('void', 'delete #.x', result);
|
| - return result;
|
| - }
|
| -
|
| - static fetch(cache, String key) {
|
| - return JS('', '#[#]', cache, key);
|
| - }
|
| -
|
| - static void update(cache, String key, value) {
|
| - JS('void', '#[#] = #', cache, key, value);
|
| - }
|
| -}
|
| -
|
| -/**
|
| - * Called by generated code to throw an illegal-argument exception,
|
| - * for example, if a non-integer index is given to an optimized
|
| - * indexed access.
|
| - */
|
| -iae(argument) {
|
| - throw new ArgumentError(argument);
|
| -}
|
| -
|
| -/**
|
| - * Called by generated code to throw an index-out-of-range exception,
|
| - * for example, if a bounds check fails in an optimized indexed
|
| - * access. This may also be called when the index is not an integer, in
|
| - * which case it throws an illegal-argument exception instead, like
|
| - * [iae], or when the receiver is null.
|
| - */
|
| -ioore(receiver, index) {
|
| - if (receiver == null) receiver.length; // Force a NoSuchMethodError.
|
| - if (index is !int) iae(index);
|
| - throw new RangeError.value(index);
|
| -}
|
| -
|
| -stringLastIndexOfUnchecked(receiver, element, start)
|
| - => JS('int', r'#.lastIndexOf(#, #)', receiver, element, start);
|
| -
|
| -
|
| -checkNull(object) {
|
| - if (object == null) throw new ArgumentError(null);
|
| - return object;
|
| -}
|
| -
|
| -checkNum(value) {
|
| - if (value is !num) {
|
| - throw new ArgumentError(value);
|
| - }
|
| - return value;
|
| -}
|
| -
|
| -checkInt(value) {
|
| - if (value is !int) {
|
| - throw new ArgumentError(value);
|
| - }
|
| - return value;
|
| -}
|
| -
|
| -checkBool(value) {
|
| - if (value is !bool) {
|
| - throw new ArgumentError(value);
|
| - }
|
| - return value;
|
| -}
|
| -
|
| -checkString(value) {
|
| - if (value is !String) {
|
| - throw new ArgumentError(value);
|
| - }
|
| - return value;
|
| -}
|
| -
|
| -/**
|
| - * Wrap the given Dart object and record a stack trace.
|
| - *
|
| - * The code in [unwrapException] deals with getting the original Dart
|
| - * object out of the wrapper again.
|
| - */
|
| -@NoInline()
|
| -wrapException(ex) {
|
| - if (ex == null) ex = new NullThrownError();
|
| - var wrapper = JS('', 'new Error()');
|
| - // [unwrapException] looks for the property 'dartException'.
|
| - JS('void', '#.dartException = #', wrapper, ex);
|
| -
|
| - if (JS('bool', '"defineProperty" in Object')) {
|
| - // Define a JavaScript getter for 'message'. This is to work around V8 bug
|
| - // (https://code.google.com/p/v8/issues/detail?id=2519). The default
|
| - // toString on Error returns the value of 'message' if 'name' is
|
| - // empty. Setting toString directly doesn't work, see the bug.
|
| - JS('void', 'Object.defineProperty(#, "message", { get: # })',
|
| - wrapper, DART_CLOSURE_TO_JS(toStringWrapper));
|
| - JS('void', '#.name = ""', wrapper);
|
| - } else {
|
| - // In the unlikely event the browser doesn't support Object.defineProperty,
|
| - // hope that it just calls toString.
|
| - JS('void', '#.toString = #', wrapper, DART_CLOSURE_TO_JS(toStringWrapper));
|
| - }
|
| -
|
| - return wrapper;
|
| -}
|
| -
|
| -/// Do not call directly.
|
| -toStringWrapper() {
|
| - // This method gets installed as toString on a JavaScript object. Due to the
|
| - // weird scope rules of JavaScript, JS 'this' will refer to that object.
|
| - return JS('', r'this.dartException').toString();
|
| -}
|
| -
|
| -/**
|
| - * This wraps the exception and does the throw. It is possible to call this in
|
| - * a JS expression context, where the throw statement is not allowed. Helpers
|
| - * are never inlined, so we don't risk inlining the throw statement into an
|
| - * expression context.
|
| - */
|
| -throwExpression(ex) {
|
| - JS('void', 'throw #', wrapException(ex));
|
| -}
|
| -
|
| -makeLiteralListConst(list) {
|
| - JS('bool', r'#.immutable$list = #', list, true);
|
| - JS('bool', r'#.fixed$length = #', list, true);
|
| - return list;
|
| -}
|
| -
|
| -throwRuntimeError(message) {
|
| - throw new RuntimeError(message);
|
| -}
|
| -
|
| -throwAbstractClassInstantiationError(className) {
|
| - throw new AbstractClassInstantiationError(className);
|
| -}
|
| -
|
| -
|
| -/**
|
| - * Helper class for building patterns recognizing native type errors.
|
| - */
|
| -class TypeErrorDecoder {
|
| - // Field names are private to help tree-shaking.
|
| -
|
| - /// A regular expression which matches is matched against an error message.
|
| - final String _pattern;
|
| -
|
| - /// The group index of "arguments" in [_pattern], or -1 if _pattern has no
|
| - /// match for "arguments".
|
| - final int _arguments;
|
| -
|
| - /// The group index of "argumentsExpr" in [_pattern], or -1 if _pattern has
|
| - /// no match for "argumentsExpr".
|
| - final int _argumentsExpr;
|
| -
|
| - /// The group index of "expr" in [_pattern], or -1 if _pattern has no match
|
| - /// for "expr".
|
| - final int _expr;
|
| -
|
| - /// The group index of "method" in [_pattern], or -1 if _pattern has no match
|
| - /// for "method".
|
| - final int _method;
|
| -
|
| - /// The group index of "receiver" in [_pattern], or -1 if _pattern has no
|
| - /// match for "receiver".
|
| - final int _receiver;
|
| -
|
| - /// Pattern used to recognize a NoSuchMethodError error (and
|
| - /// possibly extract the method name).
|
| - static final TypeErrorDecoder noSuchMethodPattern =
|
| - extractPattern(provokeCallErrorOn(buildJavaScriptObject()));
|
| -
|
| - /// Pattern used to recognize an "object not a closure" error (and
|
| - /// possibly extract the method name).
|
| - static final TypeErrorDecoder notClosurePattern =
|
| - extractPattern(provokeCallErrorOn(buildJavaScriptObjectWithNonClosure()));
|
| -
|
| - /// Pattern used to recognize a NoSuchMethodError on JavaScript null
|
| - /// call.
|
| - static final TypeErrorDecoder nullCallPattern =
|
| - extractPattern(provokeCallErrorOn(JS('', 'null')));
|
| -
|
| - /// Pattern used to recognize a NoSuchMethodError on JavaScript literal null
|
| - /// call.
|
| - static final TypeErrorDecoder nullLiteralCallPattern =
|
| - extractPattern(provokeCallErrorOnNull());
|
| -
|
| - /// Pattern used to recognize a NoSuchMethodError on JavaScript
|
| - /// undefined call.
|
| - static final TypeErrorDecoder undefinedCallPattern =
|
| - extractPattern(provokeCallErrorOn(JS('', 'void 0')));
|
| -
|
| - /// Pattern used to recognize a NoSuchMethodError on JavaScript literal
|
| - /// undefined call.
|
| - static final TypeErrorDecoder undefinedLiteralCallPattern =
|
| - extractPattern(provokeCallErrorOnUndefined());
|
| -
|
| - /// Pattern used to recognize a NoSuchMethodError on JavaScript null
|
| - /// property access.
|
| - static final TypeErrorDecoder nullPropertyPattern =
|
| - extractPattern(provokePropertyErrorOn(JS('', 'null')));
|
| -
|
| - /// Pattern used to recognize a NoSuchMethodError on JavaScript literal null
|
| - /// property access.
|
| - static final TypeErrorDecoder nullLiteralPropertyPattern =
|
| - extractPattern(provokePropertyErrorOnNull());
|
| -
|
| - /// Pattern used to recognize a NoSuchMethodError on JavaScript
|
| - /// undefined property access.
|
| - static final TypeErrorDecoder undefinedPropertyPattern =
|
| - extractPattern(provokePropertyErrorOn(JS('', 'void 0')));
|
| -
|
| - /// Pattern used to recognize a NoSuchMethodError on JavaScript literal
|
| - /// undefined property access.
|
| - static final TypeErrorDecoder undefinedLiteralPropertyPattern =
|
| - extractPattern(provokePropertyErrorOnUndefined());
|
| -
|
| - TypeErrorDecoder(this._arguments,
|
| - this._argumentsExpr,
|
| - this._expr,
|
| - this._method,
|
| - this._receiver,
|
| - this._pattern);
|
| -
|
| - /// Returns a JavaScript object literal (map) with at most the
|
| - /// following keys:
|
| - ///
|
| - /// * arguments: The arguments as formatted by the JavaScript
|
| - /// engine. No browsers are known to provide this information.
|
| - ///
|
| - /// * argumentsExpr: The syntax of the arguments (JavaScript source
|
| - /// code). No browsers are known to provide this information.
|
| - ///
|
| - /// * expr: The syntax of the receiver expression (JavaScript source
|
| - /// code). Firefox provides this information, for example: "$expr$.$method$
|
| - /// is not a function".
|
| - ///
|
| - /// * method: The name of the called method (mangled name). At least Firefox
|
| - /// and Chrome/V8 provides this information, for example, "Object [object
|
| - /// Object] has no method '$method$'".
|
| - ///
|
| - /// * receiver: The string representation of the receiver. Chrome/V8
|
| - /// used to provide this information (by calling user-defined
|
| - /// JavaScript toString on receiver), but it has degenerated into
|
| - /// "[object Object]" in recent versions.
|
| - matchTypeError(message) {
|
| - var match = JS('JSExtendableArray|Null',
|
| - 'new RegExp(#).exec(#)', _pattern, message);
|
| - if (match == null) return null;
|
| - var result = JS('', '{}');
|
| - if (_arguments != -1) {
|
| - JS('', '#.arguments = #[# + 1]', result, match, _arguments);
|
| - }
|
| - if (_argumentsExpr != -1) {
|
| - JS('', '#.argumentsExpr = #[# + 1]', result, match, _argumentsExpr);
|
| - }
|
| - if (_expr != -1) {
|
| - JS('', '#.expr = #[# + 1]', result, match, _expr);
|
| - }
|
| - if (_method != -1) {
|
| - JS('', '#.method = #[# + 1]', result, match, _method);
|
| - }
|
| - if (_receiver != -1) {
|
| - JS('', '#.receiver = #[# + 1]', result, match, _receiver);
|
| - }
|
| -
|
| - return result;
|
| - }
|
| -
|
| - /// Builds a JavaScript Object with a toString method saying
|
| - /// r"$receiver$".
|
| - static buildJavaScriptObject() {
|
| - return JS('', r'{ toString: function() { return "$receiver$"; } }');
|
| - }
|
| -
|
| - /// Builds a JavaScript Object with a toString method saying
|
| - /// r"$receiver$". The property "$method" is defined, but is not a function.
|
| - static buildJavaScriptObjectWithNonClosure() {
|
| - return JS('', r'{ $method$: null, '
|
| - r'toString: function() { return "$receiver$"; } }');
|
| - }
|
| -
|
| - /// Extract a pattern from a JavaScript TypeError message.
|
| - ///
|
| - /// The patterns are extracted by forcing TypeErrors on known
|
| - /// objects thus forcing known strings into the error message. The
|
| - /// known strings are then replaced with wildcards which in theory
|
| - /// makes it possible to recognize the desired information even if
|
| - /// the error messages are reworded or translated.
|
| - static extractPattern(String message) {
|
| - // Some JavaScript implementations (V8 at least) include a
|
| - // representation of the receiver in the error message, however,
|
| - // this representation is not always [: receiver.toString() :],
|
| - // sometimes it is [: Object.prototype.toString(receiver) :], and
|
| - // sometimes it is an implementation specific method (but that
|
| - // doesn't seem to happen for object literals). So sometimes we
|
| - // get the text "[object Object]". The shortest way to get that
|
| - // string is using "String({})".
|
| - // See: http://code.google.com/p/v8/issues/detail?id=2519.
|
| - message = JS('String', r"#.replace(String({}), '$receiver$')", message);
|
| -
|
| - // Since we want to create a new regular expression from an unknown string,
|
| - // we must escape all regular expression syntax.
|
| - message = JS('String', r"#.replace(new RegExp(#, 'g'), '\\$&')",
|
| - message, ESCAPE_REGEXP);
|
| -
|
| - // Look for the special pattern \$camelCase\$ (all the $ symbols
|
| - // have been escaped already), as we will soon be inserting
|
| - // regular expression syntax that we want interpreted by RegExp.
|
| - List<String> match =
|
| - JS('JSExtendableArray|Null', r"#.match(/\\\$[a-zA-Z]+\\\$/g)", message);
|
| - if (match == null) match = [];
|
| -
|
| - // Find the positions within the substring matches of the error message
|
| - // components. This will help us extract information later, such as the
|
| - // method name.
|
| - int arguments = JS('int', '#.indexOf(#)', match, r'\$arguments\$');
|
| - int argumentsExpr = JS('int', '#.indexOf(#)', match, r'\$argumentsExpr\$');
|
| - int expr = JS('int', '#.indexOf(#)', match, r'\$expr\$');
|
| - int method = JS('int', '#.indexOf(#)', match, r'\$method\$');
|
| - int receiver = JS('int', '#.indexOf(#)', match, r'\$receiver\$');
|
| -
|
| - // Replace the patterns with a regular expression wildcard.
|
| - // Note: in a perfect world, one would use "(.*)", but not in
|
| - // JavaScript, "." does not match newlines.
|
| - String pattern = JS('String',
|
| - r"#.replace('\\$arguments\\$', '((?:x|[^x])*)')"
|
| - r".replace('\\$argumentsExpr\\$', '((?:x|[^x])*)')"
|
| - r".replace('\\$expr\\$', '((?:x|[^x])*)')"
|
| - r".replace('\\$method\\$', '((?:x|[^x])*)')"
|
| - r".replace('\\$receiver\\$', '((?:x|[^x])*)')",
|
| - message);
|
| -
|
| - return new TypeErrorDecoder(arguments,
|
| - argumentsExpr,
|
| - expr,
|
| - method,
|
| - receiver,
|
| - pattern);
|
| - }
|
| -
|
| - /// Provokes a TypeError and returns its message.
|
| - ///
|
| - /// The error is provoked so all known variable content can be recognized and
|
| - /// a pattern can be inferred.
|
| - static String provokeCallErrorOn(expression) {
|
| - // This function is carefully created to maximize the possibility
|
| - // of decoding the TypeError message and turning it into a general
|
| - // pattern.
|
| - //
|
| - // The idea is to inject something known into something unknown. The
|
| - // unknown entity is the error message that the browser provides with a
|
| - // TypeError. It is a human readable message, possibly localized in a
|
| - // language no dart2js engineer understand. We assume that $name$ would
|
| - // never naturally occur in a human readable error message, yet it is easy
|
| - // to decode.
|
| - //
|
| - // For example, evaluate this in V8 version 3.13.7.6:
|
| - //
|
| - // var $expr$ = null; $expr$.$method$()
|
| - //
|
| - // The VM throws an instance of TypeError whose message property contains
|
| - // "Cannot call method '$method$' of null". We can then reasonably assume
|
| - // that if the string contains $method$, that's where the method name will
|
| - // be in general. Call this automatically reverse engineering the error
|
| - // format string in V8.
|
| - //
|
| - // So the error message from V8 is turned into this regular expression:
|
| - //
|
| - // "Cannot call method '(.*)' of null"
|
| - //
|
| - // Similarly, if we evaluate:
|
| - //
|
| - // var $expr$ = {toString: function() { return '$receiver$'; }};
|
| - // $expr$.$method$()
|
| - //
|
| - // We get this message: "Object $receiver$ has no method '$method$'"
|
| - //
|
| - // Which is turned into this regular expression:
|
| - //
|
| - // "Object (.*) has no method '(.*)'"
|
| - //
|
| - // Firefox/jsshell is slightly different, it tries to include the source
|
| - // code that caused the exception, so we get this message: "$expr$.$method$
|
| - // is not a function" which is turned into this regular expression:
|
| - //
|
| - // "(.*)\\.(.*) is not a function"
|
| -
|
| - var function = JS('', r"""function($expr$) {
|
| - var $argumentsExpr$ = '$arguments$';
|
| - try {
|
| - $expr$.$method$($argumentsExpr$);
|
| - } catch (e) {
|
| - return e.message;
|
| - }
|
| -}""");
|
| - return JS('String', '(#)(#)', function, expression);
|
| - }
|
| -
|
| - /// Similar to [provokeCallErrorOn], but provokes an error directly on
|
| - /// literal "null" expression.
|
| - static String provokeCallErrorOnNull() {
|
| - // See [provokeCallErrorOn] for a detailed explanation.
|
| - var function = JS('', r"""function() {
|
| - var $argumentsExpr$ = '$arguments$';
|
| - try {
|
| - null.$method$($argumentsExpr$);
|
| - } catch (e) {
|
| - return e.message;
|
| - }
|
| -}""");
|
| - return JS('String', '(#)()', function);
|
| - }
|
| -
|
| - /// Similar to [provokeCallErrorOnNull], but provokes an error directly on
|
| - /// (void 0), that is, "undefined".
|
| - static String provokeCallErrorOnUndefined() {
|
| - // See [provokeCallErrorOn] for a detailed explanation.
|
| - var function = JS('', r"""function() {
|
| - var $argumentsExpr$ = '$arguments$';
|
| - try {
|
| - (void 0).$method$($argumentsExpr$);
|
| - } catch (e) {
|
| - return e.message;
|
| - }
|
| -}""");
|
| - return JS('String', '(#)()', function);
|
| - }
|
| -
|
| - /// Similar to [provokeCallErrorOn], but provokes a property access
|
| - /// error.
|
| - static String provokePropertyErrorOn(expression) {
|
| - // See [provokeCallErrorOn] for a detailed explanation.
|
| - var function = JS('', r"""function($expr$) {
|
| - try {
|
| - $expr$.$method$;
|
| - } catch (e) {
|
| - return e.message;
|
| - }
|
| -}""");
|
| - return JS('String', '(#)(#)', function, expression);
|
| - }
|
| -
|
| - /// Similar to [provokePropertyErrorOn], but provokes an property access
|
| - /// error directly on literal "null" expression.
|
| - static String provokePropertyErrorOnNull() {
|
| - // See [provokeCallErrorOn] for a detailed explanation.
|
| - var function = JS('', r"""function() {
|
| - try {
|
| - null.$method$;
|
| - } catch (e) {
|
| - return e.message;
|
| - }
|
| -}""");
|
| - return JS('String', '(#)()', function);
|
| - }
|
| -
|
| - /// Similar to [provokePropertyErrorOnNull], but provokes an property access
|
| - /// error directly on (void 0), that is, "undefined".
|
| - static String provokePropertyErrorOnUndefined() {
|
| - // See [provokeCallErrorOn] for a detailed explanation.
|
| - var function = JS('', r"""function() {
|
| - try {
|
| - (void 0).$method$;
|
| - } catch (e) {
|
| - return e.message;
|
| - }
|
| -}""");
|
| - return JS('String', '(#)()', function);
|
| - }
|
| -}
|
| -
|
| -class NullError extends Error implements NoSuchMethodError {
|
| - final String _message;
|
| - final String _method;
|
| -
|
| - NullError(this._message, match)
|
| - : _method = match == null ? null : JS('', '#.method', match);
|
| -
|
| - String toString() {
|
| - if (_method == null) return 'NullError: $_message';
|
| - return 'NullError: Cannot call "$_method" on null';
|
| - }
|
| -}
|
| -
|
| -class JsNoSuchMethodError extends Error implements NoSuchMethodError {
|
| - final String _message;
|
| - final String _method;
|
| - final String _receiver;
|
| -
|
| - JsNoSuchMethodError(this._message, match)
|
| - : _method = match == null ? null : JS('String|Null', '#.method', match),
|
| - _receiver =
|
| - match == null ? null : JS('String|Null', '#.receiver', match);
|
| -
|
| - String toString() {
|
| - if (_method == null) return 'NoSuchMethodError: $_message';
|
| - if (_receiver == null) {
|
| - return 'NoSuchMethodError: Cannot call "$_method" ($_message)';
|
| - }
|
| - return 'NoSuchMethodError: Cannot call "$_method" on "$_receiver" '
|
| - '($_message)';
|
| - }
|
| -}
|
| -
|
| -class UnknownJsTypeError extends Error {
|
| - final String _message;
|
| -
|
| - UnknownJsTypeError(this._message);
|
| -
|
| - String toString() => _message.isEmpty ? 'Error' : 'Error: $_message';
|
| -}
|
| -
|
| -/**
|
| - * Called from catch blocks in generated code to extract the Dart
|
| - * exception from the thrown value. The thrown value may have been
|
| - * created by [wrapException] or it may be a 'native' JS exception.
|
| - *
|
| - * Some native exceptions are mapped to new Dart instances, others are
|
| - * returned unmodified.
|
| - */
|
| -unwrapException(ex) {
|
| - /// If error implements Error, save [ex] in [error.$thrownJsError].
|
| - /// Otherwise, do nothing. Later, the stack trace can then be extraced from
|
| - /// [ex].
|
| - saveStackTrace(error) {
|
| - if (error is Error) {
|
| - var thrownStackTrace = JS('', r'#.$thrownJsError', error);
|
| - if (thrownStackTrace == null) {
|
| - JS('void', r'#.$thrownJsError = #', error, ex);
|
| - }
|
| - }
|
| - return error;
|
| - }
|
| -
|
| - // Note that we are checking if the object has the property. If it
|
| - // has, it could be set to null if the thrown value is null.
|
| - if (ex == null) return null;
|
| - if (JS('bool', 'typeof # !== "object"', ex)) return ex;
|
| -
|
| - if (JS('bool', r'"dartException" in #', ex)) {
|
| - return saveStackTrace(JS('', r'#.dartException', ex));
|
| - } else if (!JS('bool', r'"message" in #', ex)) {
|
| - return ex;
|
| - }
|
| -
|
| - // Grab hold of the exception message. This field is available on
|
| - // all supported browsers.
|
| - var message = JS('var', r'#.message', ex);
|
| -
|
| - // Internet Explorer has an error number. This is the most reliable way to
|
| - // detect specific errors, so check for this first.
|
| - if (JS('bool', '"number" in #', ex)
|
| - && JS('bool', 'typeof #.number == "number"', ex)) {
|
| - int number = JS('int', '#.number', ex);
|
| -
|
| - // From http://msdn.microsoft.com/en-us/library/ie/hc53e755(v=vs.94).aspx
|
| - // "number" is a 32-bit word. The error code is the low 16 bits, and the
|
| - // facility code is the upper 16 bits.
|
| - var ieErrorCode = number & 0xffff;
|
| - var ieFacilityNumber = (number >> 16) & 0x1fff;
|
| -
|
| - // http://msdn.microsoft.com/en-us/library/aa264975(v=vs.60).aspx
|
| - // http://msdn.microsoft.com/en-us/library/ie/1dk3k160(v=vs.94).aspx
|
| - if (ieFacilityNumber == 10) {
|
| - switch (ieErrorCode) {
|
| - case 438:
|
| - return saveStackTrace(
|
| - new JsNoSuchMethodError('$message (Error $ieErrorCode)', null));
|
| - case 445:
|
| - case 5007:
|
| - return saveStackTrace(
|
| - new NullError('$message (Error $ieErrorCode)', null));
|
| - }
|
| - }
|
| - }
|
| -
|
| - if (JS('bool', r'# instanceof TypeError', ex)) {
|
| - var match;
|
| - // Using JS to give type hints to the compiler to help tree-shaking.
|
| - // TODO(ahe): That should be unnecessary due to type inference.
|
| - var nsme =
|
| - JS('TypeErrorDecoder', '#', TypeErrorDecoder.noSuchMethodPattern);
|
| - var notClosure =
|
| - JS('TypeErrorDecoder', '#', TypeErrorDecoder.notClosurePattern);
|
| - var nullCall =
|
| - JS('TypeErrorDecoder', '#', TypeErrorDecoder.nullCallPattern);
|
| - var nullLiteralCall =
|
| - JS('TypeErrorDecoder', '#', TypeErrorDecoder.nullLiteralCallPattern);
|
| - var undefCall =
|
| - JS('TypeErrorDecoder', '#', TypeErrorDecoder.undefinedCallPattern);
|
| - var undefLiteralCall =
|
| - JS('TypeErrorDecoder', '#',
|
| - TypeErrorDecoder.undefinedLiteralCallPattern);
|
| - var nullProperty =
|
| - JS('TypeErrorDecoder', '#', TypeErrorDecoder.nullPropertyPattern);
|
| - var nullLiteralProperty =
|
| - JS('TypeErrorDecoder', '#',
|
| - TypeErrorDecoder.nullLiteralPropertyPattern);
|
| - var undefProperty =
|
| - JS('TypeErrorDecoder', '#', TypeErrorDecoder.undefinedPropertyPattern);
|
| - var undefLiteralProperty =
|
| - JS('TypeErrorDecoder', '#',
|
| - TypeErrorDecoder.undefinedLiteralPropertyPattern);
|
| - if ((match = nsme.matchTypeError(message)) != null) {
|
| - return saveStackTrace(new JsNoSuchMethodError(message, match));
|
| - } else if ((match = notClosure.matchTypeError(message)) != null) {
|
| - // notClosure may match "({c:null}).c()" or "({c:1}).c()", so we
|
| - // cannot tell if this an attempt to invoke call on null or a
|
| - // non-function object.
|
| - // But we do know the method name is "call".
|
| - JS('', '#.method = "call"', match);
|
| - return saveStackTrace(new JsNoSuchMethodError(message, match));
|
| - } else if ((match = nullCall.matchTypeError(message)) != null ||
|
| - (match = nullLiteralCall.matchTypeError(message)) != null ||
|
| - (match = undefCall.matchTypeError(message)) != null ||
|
| - (match = undefLiteralCall.matchTypeError(message)) != null ||
|
| - (match = nullProperty.matchTypeError(message)) != null ||
|
| - (match = nullLiteralCall.matchTypeError(message)) != null ||
|
| - (match = undefProperty.matchTypeError(message)) != null ||
|
| - (match = undefLiteralProperty.matchTypeError(message)) != null) {
|
| - return saveStackTrace(new NullError(message, match));
|
| - }
|
| -
|
| - // If we cannot determine what kind of error this is, we fall back
|
| - // to reporting this as a generic error. It's probably better than
|
| - // nothing.
|
| - return saveStackTrace(
|
| - new UnknownJsTypeError(message is String ? message : ''));
|
| - }
|
| -
|
| - if (JS('bool', r'# instanceof RangeError', ex)) {
|
| - if (message is String && contains(message, 'call stack')) {
|
| - return new StackOverflowError();
|
| - }
|
| -
|
| - // In general, a RangeError is thrown when trying to pass a number
|
| - // as an argument to a function that does not allow a range that
|
| - // includes that number.
|
| - return saveStackTrace(new ArgumentError());
|
| - }
|
| -
|
| - // Check for the Firefox specific stack overflow signal.
|
| - if (JS('bool',
|
| - r'typeof InternalError == "function" && # instanceof InternalError',
|
| - ex)) {
|
| - if (message is String && message == 'too much recursion') {
|
| - return new StackOverflowError();
|
| - }
|
| - }
|
| -
|
| - // Just return the exception. We should not wrap it because in case
|
| - // the exception comes from the DOM, it is a JavaScript
|
| - // object backed by a native Dart class.
|
| - return ex;
|
| -}
|
| -
|
| -/**
|
| - * Called by generated code to fetch the stack trace from an
|
| - * exception. Should never return null.
|
| - */
|
| -StackTrace getTraceFromException(exception) => new _StackTrace(exception);
|
| -
|
| -class _StackTrace implements StackTrace {
|
| - var _exception;
|
| - String _trace;
|
| - _StackTrace(this._exception);
|
| -
|
| - String toString() {
|
| - if (_trace != null) return _trace;
|
| -
|
| - String trace;
|
| - if (JS('bool', 'typeof # === "object"', _exception)) {
|
| - trace = JS("String|Null", r"#.stack", _exception);
|
| - }
|
| - return _trace = (trace == null) ? '' : trace;
|
| - }
|
| -}
|
| -
|
| -int objectHashCode(var object) {
|
| - if (object == null || JS('bool', "typeof # != 'object'", object)) {
|
| - return object.hashCode;
|
| - } else {
|
| - return Primitives.objectHashCode(object);
|
| - }
|
| -}
|
| -
|
| -/**
|
| - * Called by generated code to build a map literal. [keyValuePairs] is
|
| - * a list of key, value, key, value, ..., etc.
|
| - */
|
| -fillLiteralMap(keyValuePairs, Map result) {
|
| - // TODO(johnniwinther): Use JSArray to optimize this code instead of calling
|
| - // [getLength] and [getIndex].
|
| - int index = 0;
|
| - int length = getLength(keyValuePairs);
|
| - while (index < length) {
|
| - var key = getIndex(keyValuePairs, index++);
|
| - var value = getIndex(keyValuePairs, index++);
|
| - result[key] = value;
|
| - }
|
| - return result;
|
| -}
|
| -
|
| -invokeClosure(Function closure,
|
| - var isolate,
|
| - int numberOfArguments,
|
| - var arg1,
|
| - var arg2,
|
| - var arg3,
|
| - var arg4) {
|
| - if (numberOfArguments == 0) {
|
| - return JS_CALL_IN_ISOLATE(isolate, () => closure());
|
| - } else if (numberOfArguments == 1) {
|
| - return JS_CALL_IN_ISOLATE(isolate, () => closure(arg1));
|
| - } else if (numberOfArguments == 2) {
|
| - return JS_CALL_IN_ISOLATE(isolate, () => closure(arg1, arg2));
|
| - } else if (numberOfArguments == 3) {
|
| - return JS_CALL_IN_ISOLATE(isolate, () => closure(arg1, arg2, arg3));
|
| - } else if (numberOfArguments == 4) {
|
| - return JS_CALL_IN_ISOLATE(isolate, () => closure(arg1, arg2, arg3, arg4));
|
| - } else {
|
| - throw new Exception(
|
| - 'Unsupported number of arguments for wrapped closure');
|
| - }
|
| -}
|
| -
|
| -/**
|
| - * Called by generated code to convert a Dart closure to a JS
|
| - * closure when the Dart closure is passed to the DOM.
|
| - */
|
| -convertDartClosureToJS(closure, int arity) {
|
| - if (closure == null) return null;
|
| - var function = JS('var', r'#.$identity', closure);
|
| - if (JS('bool', r'!!#', function)) return function;
|
| -
|
| - // We use $0 and $1 to not clash with variable names used by the
|
| - // compiler and/or minifier.
|
| - function = JS('var',
|
| - '(function(closure, arity, context, invoke) {'
|
| - ' return function(a1, a2, a3, a4) {'
|
| - ' return invoke(closure, context, arity, a1, a2, a3, a4);'
|
| - ' };'
|
| - '})(#,#,#,#)',
|
| - closure,
|
| - arity,
|
| - // Capture the current isolate now. Remember that "#"
|
| - // in JS is simply textual substitution of compiled
|
| - // expressions.
|
| - JS_CURRENT_ISOLATE_CONTEXT(),
|
| - DART_CLOSURE_TO_JS(invokeClosure));
|
| -
|
| - JS('void', r'#.$identity = #', closure, function);
|
| - return function;
|
| -}
|
| -
|
| -/**
|
| - * Super class for Dart closures.
|
| - */
|
| -abstract class Closure implements Function {
|
| - // TODO(ahe): These constants must be in sync with
|
| - // reflection_data_parser.dart.
|
| - static const FUNCTION_INDEX = 0;
|
| - static const NAME_INDEX = 1;
|
| - static const CALL_NAME_INDEX = 2;
|
| - static const REQUIRED_PARAMETER_INDEX = 3;
|
| - static const OPTIONAL_PARAMETER_INDEX = 4;
|
| - static const DEFAULT_ARGUMENTS_INDEX = 5;
|
| -
|
| - /**
|
| - * Global counter to prevent reusing function code objects.
|
| - *
|
| - * V8 will share the underlying function code objects when the same string is
|
| - * passed to "new Function". Shared function code objects can lead to
|
| - * sub-optimal performance due to polymorhism, and can be prevented by
|
| - * ensuring the strings are different.
|
| - */
|
| - static int functionCounter = 0;
|
| -
|
| - Closure();
|
| -
|
| - /**
|
| - * Creates a new closure class for use by implicit getters associated with a
|
| - * method.
|
| - *
|
| - * In other words, creates a tear-off closure.
|
| - *
|
| - * Called from [closureFromTearOff] as well as from reflection when tearing
|
| - * of a method via [:getField:].
|
| - *
|
| - * This method assumes that [functions] was created by the JavaScript function
|
| - * `addStubs` in `reflection_data_parser.dart`. That is, a list of JavaScript
|
| - * function objects with properties `$stubName` and `$callName`.
|
| - *
|
| - * Further assumes that [reflectionInfo] is the end of the array created by
|
| - * [dart2js.js_emitter.ContainerBuilder.addMemberMethod] starting with
|
| - * required parameter count.
|
| - *
|
| - * Caution: this function may be called when building constants.
|
| - * TODO(ahe): Don't call this function when building constants.
|
| - */
|
| - static fromTearOff(receiver,
|
| - List functions,
|
| - List reflectionInfo,
|
| - bool isStatic,
|
| - jsArguments,
|
| - String propertyName) {
|
| - JS_EFFECT(() {
|
| - BoundClosure.receiverOf(JS('BoundClosure', 'void 0'));
|
| - BoundClosure.selfOf(JS('BoundClosure', 'void 0'));
|
| - });
|
| - // TODO(ahe): All the place below using \$ should be rewritten to go
|
| - // through the namer.
|
| - var function = JS('', '#[#]', functions, 0);
|
| - String name = JS('String|Null', '#.\$stubName', function);
|
| - String callName = JS('String|Null', '#.\$callName', function);
|
| -
|
| - JS('', '#.\$reflectionInfo = #', function, reflectionInfo);
|
| - ReflectionInfo info = new ReflectionInfo(function);
|
| -
|
| - var functionType = info.functionType;
|
| -
|
| - // function tmp() {};
|
| - // tmp.prototype = BC.prototype;
|
| - // var proto = new tmp;
|
| - // for each computed prototype property:
|
| - // proto[property] = ...;
|
| - // proto._init = BC;
|
| - // var dynClosureConstructor =
|
| - // new Function('self', 'target', 'receiver', 'name',
|
| - // 'this._init(self, target, receiver, name)');
|
| - // proto.constructor = dynClosureConstructor; // Necessary?
|
| - // dynClosureConstructor.prototype = proto;
|
| - // return dynClosureConstructor;
|
| -
|
| - // We need to create a new subclass of either TearOffClosure or
|
| - // BoundClosure. For this, we need to create an object whose prototype is
|
| - // the prototype is either TearOffClosure.prototype or
|
| - // BoundClosure.prototype, respectively in pseudo JavaScript code. The
|
| - // simplest way to access the JavaScript construction function of a Dart
|
| - // class is to create an instance and access its constructor property. The
|
| - // newly created instance could in theory be used directly as the
|
| - // prototype, but it might include additional fields that we don't need.
|
| - // So we only use the new instance to access the constructor property and
|
| - // use Object.create to create the desired prototype.
|
| - var prototype = isStatic
|
| - // TODO(ahe): Safe to use Object.create?
|
| - ? JS('TearOffClosure', 'Object.create(#.constructor.prototype)',
|
| - new TearOffClosure())
|
| - : JS('BoundClosure', 'Object.create(#.constructor.prototype)',
|
| - new BoundClosure(null, null, null, null));
|
| -
|
| - JS('', '#.\$initialize = #', prototype, JS('', '#.constructor', prototype));
|
| - var constructor = isStatic
|
| - ? JS('', 'function(){this.\$initialize()}')
|
| - : isCsp
|
| - ? JS('', 'function(a,b,c,d) {this.\$initialize(a,b,c,d)}')
|
| - : JS('',
|
| - 'new Function("a","b","c","d",'
|
| - '"this.\$initialize(a,b,c,d);"+#)',
|
| - functionCounter++);
|
| -
|
| - // TODO(ahe): Is it necessary to set the constructor property?
|
| - JS('', '#.constructor = #', prototype, constructor);
|
| -
|
| - JS('', '#.prototype = #', constructor, prototype);
|
| -
|
| - // Create a closure and "monkey" patch it with call stubs.
|
| - var trampoline = function;
|
| - var isIntercepted = false;
|
| - if (!isStatic) {
|
| - if (JS('bool', '#.length == 1', jsArguments)) {
|
| - // Intercepted call.
|
| - isIntercepted = true;
|
| - }
|
| - trampoline = forwardCallTo(receiver, function, isIntercepted);
|
| - JS('', '#.\$reflectionInfo = #', trampoline, reflectionInfo);
|
| - } else {
|
| - JS('', '#.\$name = #', prototype, propertyName);
|
| - }
|
| -
|
| - var signatureFunction;
|
| - if (JS('bool', 'typeof # == "number"', functionType)) {
|
| - signatureFunction =
|
| - JS('', '(function(s){return function(){return init.metadata[s]}})(#)',
|
| - functionType);
|
| - } else if (!isStatic
|
| - && JS('bool', 'typeof # == "function"', functionType)) {
|
| - var getReceiver = isIntercepted
|
| - ? RAW_DART_FUNCTION_REF(BoundClosure.receiverOf)
|
| - : RAW_DART_FUNCTION_REF(BoundClosure.selfOf);
|
| - signatureFunction = JS(
|
| - '',
|
| - 'function(f,r){'
|
| - 'return function(){'
|
| - 'return f.apply({\$receiver:r(this)},arguments)'
|
| - '}'
|
| - '}(#,#)', functionType, getReceiver);
|
| - } else {
|
| - throw 'Error in reflectionInfo.';
|
| - }
|
| -
|
| - JS('', '#.\$signature = #', prototype, signatureFunction);
|
| -
|
| - JS('', '#[#] = #', prototype, callName, trampoline);
|
| - for (int i = 1; i < functions.length; i++) {
|
| - var stub = functions[i];
|
| - var stubCallName = JS('String|Null', '#.\$callName', stub);
|
| - if (stubCallName != null) {
|
| - JS('', '#[#] = #', prototype, stubCallName,
|
| - isStatic ? stub : forwardCallTo(receiver, stub, isIntercepted));
|
| - }
|
| - }
|
| -
|
| - JS('', '#["call*"] = #', prototype, trampoline);
|
| -
|
| - return constructor;
|
| - }
|
| -
|
| - static cspForwardCall(int arity, bool isSuperCall, String stubName,
|
| - function) {
|
| - var getSelf = RAW_DART_FUNCTION_REF(BoundClosure.selfOf);
|
| - // Handle intercepted stub-names with the default slow case.
|
| - if (isSuperCall) arity = -1;
|
| - switch (arity) {
|
| - case 0:
|
| - return JS(
|
| - '',
|
| - 'function(n,S){'
|
| - 'return function(){'
|
| - 'return S(this)[n]()'
|
| - '}'
|
| - '}(#,#)', stubName, getSelf);
|
| - case 1:
|
| - return JS(
|
| - '',
|
| - 'function(n,S){'
|
| - 'return function(a){'
|
| - 'return S(this)[n](a)'
|
| - '}'
|
| - '}(#,#)', stubName, getSelf);
|
| - case 2:
|
| - return JS(
|
| - '',
|
| - 'function(n,S){'
|
| - 'return function(a,b){'
|
| - 'return S(this)[n](a,b)'
|
| - '}'
|
| - '}(#,#)', stubName, getSelf);
|
| - case 3:
|
| - return JS(
|
| - '',
|
| - 'function(n,S){'
|
| - 'return function(a,b,c){'
|
| - 'return S(this)[n](a,b,c)'
|
| - '}'
|
| - '}(#,#)', stubName, getSelf);
|
| - case 4:
|
| - return JS(
|
| - '',
|
| - 'function(n,S){'
|
| - 'return function(a,b,c,d){'
|
| - 'return S(this)[n](a,b,c,d)'
|
| - '}'
|
| - '}(#,#)', stubName, getSelf);
|
| - case 5:
|
| - return JS(
|
| - '',
|
| - 'function(n,S){'
|
| - 'return function(a,b,c,d,e){'
|
| - 'return S(this)[n](a,b,c,d,e)'
|
| - '}'
|
| - '}(#,#)', stubName, getSelf);
|
| - default:
|
| - return JS(
|
| - '',
|
| - 'function(f,s){'
|
| - 'return function(){'
|
| - 'return f.apply(s(this),arguments)'
|
| - '}'
|
| - '}(#,#)', function, getSelf);
|
| - }
|
| - }
|
| -
|
| - static bool get isCsp => JS('bool', 'typeof dart_precompiled == "function"');
|
| -
|
| - static forwardCallTo(receiver, function, bool isIntercepted) {
|
| - if (isIntercepted) return forwardInterceptedCallTo(receiver, function);
|
| - String stubName = JS('String|Null', '#.\$stubName', function);
|
| - int arity = JS('int', '#.length', function);
|
| - var lookedUpFunction = JS("", "#[#]", receiver, stubName);
|
| - // The receiver[stubName] may not be equal to the function if we try to
|
| - // forward to a super-method. Especially when we create a bound closure
|
| - // of a super-call we need to make sure that we don't forward back to the
|
| - // dynamically looked up function.
|
| - bool isSuperCall = !identical(function, lookedUpFunction);
|
| -
|
| - if (isCsp || isSuperCall || arity >= 27) {
|
| - return cspForwardCall(arity, isSuperCall, stubName, function);
|
| - }
|
| -
|
| - if (arity == 0) {
|
| - return JS(
|
| - '',
|
| - '(new Function(#))()',
|
| - 'return function(){'
|
| - 'return this.${BoundClosure.selfFieldName()}.$stubName();'
|
| - '${functionCounter++}'
|
| - '}');
|
| - }
|
| - assert (1 <= arity && arity < 27);
|
| - String arguments = JS(
|
| - 'String',
|
| - '"abcdefghijklmnopqrstuvwxyz".split("").splice(0,#).join(",")',
|
| - arity);
|
| - return JS(
|
| - '',
|
| - '(new Function(#))()',
|
| - 'return function($arguments){'
|
| - 'return this.${BoundClosure.selfFieldName()}.$stubName($arguments);'
|
| - '${functionCounter++}'
|
| - '}');
|
| - }
|
| -
|
| - static cspForwardInterceptedCall(int arity, bool isSuperCall,
|
| - String name, function) {
|
| - var getSelf = RAW_DART_FUNCTION_REF(BoundClosure.selfOf);
|
| - var getReceiver = RAW_DART_FUNCTION_REF(BoundClosure.receiverOf);
|
| - // Handle intercepted stub-names with the default slow case.
|
| - if (isSuperCall) arity = -1;
|
| - switch (arity) {
|
| - case 0:
|
| - // Intercepted functions always takes at least one argument (the
|
| - // receiver).
|
| - throw new RuntimeError('Intercepted function with no arguments.');
|
| - case 1:
|
| - return JS(
|
| - '',
|
| - 'function(n,s,r){'
|
| - 'return function(){'
|
| - 'return s(this)[n](r(this))'
|
| - '}'
|
| - '}(#,#,#)', name, getSelf, getReceiver);
|
| - case 2:
|
| - return JS(
|
| - '',
|
| - 'function(n,s,r){'
|
| - 'return function(a){'
|
| - 'return s(this)[n](r(this),a)'
|
| - '}'
|
| - '}(#,#,#)', name, getSelf, getReceiver);
|
| - case 3:
|
| - return JS(
|
| - '',
|
| - 'function(n,s,r){'
|
| - 'return function(a,b){'
|
| - 'return s(this)[n](r(this),a,b)'
|
| - '}'
|
| - '}(#,#,#)', name, getSelf, getReceiver);
|
| - case 4:
|
| - return JS(
|
| - '',
|
| - 'function(n,s,r){'
|
| - 'return function(a,b,c){'
|
| - 'return s(this)[n](r(this),a,b,c)'
|
| - '}'
|
| - '}(#,#,#)', name, getSelf, getReceiver);
|
| - case 5:
|
| - return JS(
|
| - '',
|
| - 'function(n,s,r){'
|
| - 'return function(a,b,c,d){'
|
| - 'return s(this)[n](r(this),a,b,c,d)'
|
| - '}'
|
| - '}(#,#,#)', name, getSelf, getReceiver);
|
| - case 6:
|
| - return JS(
|
| - '',
|
| - 'function(n,s,r){'
|
| - 'return function(a,b,c,d,e){'
|
| - 'return s(this)[n](r(this),a,b,c,d,e)'
|
| - '}'
|
| - '}(#,#,#)', name, getSelf, getReceiver);
|
| - default:
|
| - return JS(
|
| - '',
|
| - 'function(f,s,r,a){'
|
| - 'return function(){'
|
| - 'a=[r(this)];'
|
| - 'Array.prototype.push.apply(a,arguments);'
|
| - 'return f.apply(s(this),a)'
|
| - '}'
|
| - '}(#,#,#)', function, getSelf, getReceiver);
|
| - }
|
| - }
|
| -
|
| - static forwardInterceptedCallTo(receiver, function) {
|
| - String selfField = BoundClosure.selfFieldName();
|
| - String receiverField = BoundClosure.receiverFieldName();
|
| - String stubName = JS('String|Null', '#.\$stubName', function);
|
| - int arity = JS('int', '#.length', function);
|
| - bool isCsp = JS('bool', 'typeof dart_precompiled == "function"');
|
| - var lookedUpFunction = JS("", "#[#]", receiver, stubName);
|
| - // The receiver[stubName] may not be equal to the function if we try to
|
| - // forward to a super-method. Especially when we create a bound closure
|
| - // of a super-call we need to make sure that we don't forward back to the
|
| - // dynamically looked up function.
|
| - bool isSuperCall = !identical(function, lookedUpFunction);
|
| -
|
| - if (isCsp || isSuperCall || arity >= 28) {
|
| - return cspForwardInterceptedCall(arity, isSuperCall, stubName,
|
| - function);
|
| - }
|
| - if (arity == 1) {
|
| - return JS(
|
| - '',
|
| - '(new Function(#))()',
|
| - 'return function(){'
|
| - 'return this.$selfField.$stubName(this.$receiverField);'
|
| - '${functionCounter++}'
|
| - '}');
|
| - }
|
| - assert(1 < arity && arity < 28);
|
| - String arguments = JS(
|
| - 'String',
|
| - '"abcdefghijklmnopqrstuvwxyz".split("").splice(0,#).join(",")',
|
| - arity - 1);
|
| - return JS(
|
| - '',
|
| - '(new Function(#))()',
|
| - 'return function($arguments){'
|
| - 'return this.$selfField.$stubName(this.$receiverField, $arguments);'
|
| - '${functionCounter++}'
|
| - '}');
|
| - }
|
| -
|
| - // The backend adds a special getter of the form
|
| - //
|
| - // Closure get call => this;
|
| - //
|
| - // to allow tearing off a closure from itself. We do this magically in the
|
| - // backend rather than simply adding it here, as we do not want this getter
|
| - // to be visible to resolution and the generation of extra stubs.
|
| -
|
| - String toString() => "Closure";
|
| -}
|
| -
|
| -/// Called from implicit method getter (aka tear-off).
|
| -closureFromTearOff(receiver,
|
| - functions,
|
| - reflectionInfo,
|
| - isStatic,
|
| - jsArguments,
|
| - name) {
|
| - return Closure.fromTearOff(
|
| - receiver,
|
| - JSArray.markFixedList(functions),
|
| - JSArray.markFixedList(reflectionInfo),
|
| - JS('bool', '!!#', isStatic),
|
| - jsArguments,
|
| - JS('String', '#', name));
|
| -}
|
| -
|
| -/// Represents an implicit closure of a function.
|
| -class TearOffClosure extends Closure {
|
| -}
|
| -
|
| -/// Represents a 'tear-off' closure, that is an instance method bound
|
| -/// to a specific receiver (instance).
|
| -class BoundClosure extends TearOffClosure {
|
| - /// The receiver or interceptor.
|
| - // TODO(ahe): This could just be the interceptor, we always know if
|
| - // we need the interceptor when generating the call method.
|
| - final _self;
|
| -
|
| - /// The method.
|
| - final _target;
|
| -
|
| - /// The receiver. Null if [_self] is not an interceptor.
|
| - final _receiver;
|
| -
|
| - /// The name of the function. Only used by the mirror system.
|
| - final String _name;
|
| -
|
| - BoundClosure(this._self, this._target, this._receiver, this._name);
|
| -
|
| - bool operator==(other) {
|
| - if (identical(this, other)) return true;
|
| - if (other is! BoundClosure) return false;
|
| - return JS('bool', '# === # && # === # && # === #',
|
| - _self, other._self,
|
| - _target, other._target,
|
| - _receiver, other._receiver);
|
| - }
|
| -
|
| - int get hashCode {
|
| - int receiverHashCode;
|
| - if (_receiver == null) {
|
| - // A bound closure on a regular Dart object, just use the
|
| - // identity hash code.
|
| - receiverHashCode = Primitives.objectHashCode(_self);
|
| - } else if (JS('String', 'typeof #', _receiver) != 'object') {
|
| - // A bound closure on a primitive JavaScript type. We
|
| - // use the hashCode method we define for those primitive types.
|
| - receiverHashCode = _receiver.hashCode;
|
| - } else {
|
| - // A bound closure on an intercepted native class, just use the
|
| - // identity hash code.
|
| - receiverHashCode = Primitives.objectHashCode(_receiver);
|
| - }
|
| - return receiverHashCode ^ Primitives.objectHashCode(_target);
|
| - }
|
| -
|
| - @NoInline()
|
| - static selfOf(BoundClosure closure) => closure._self;
|
| -
|
| - static targetOf(BoundClosure closure) => closure._target;
|
| -
|
| - @NoInline()
|
| - static receiverOf(BoundClosure closure) => closure._receiver;
|
| -
|
| - static nameOf(BoundClosure closure) => closure._name;
|
| -
|
| - static String selfFieldNameCache;
|
| -
|
| - static String selfFieldName() {
|
| - if (selfFieldNameCache == null) {
|
| - selfFieldNameCache = computeFieldNamed('self');
|
| - }
|
| - return selfFieldNameCache;
|
| - }
|
| -
|
| - static String receiverFieldNameCache;
|
| -
|
| - static String receiverFieldName() {
|
| - if (receiverFieldNameCache == null) {
|
| - receiverFieldNameCache = computeFieldNamed('receiver');
|
| - }
|
| - return receiverFieldNameCache;
|
| - }
|
| -
|
| - @NoInline() @NoSideEffects()
|
| - static String computeFieldNamed(String fieldName) {
|
| - var template = new BoundClosure('self', 'target', 'receiver', 'name');
|
| - var names = JSArray.markFixedList(
|
| - JS('', 'Object.getOwnPropertyNames(#)', template));
|
| - for (int i = 0; i < names.length; i++) {
|
| - var name = names[i];
|
| - if (JS('bool', '#[#] === #', template, name, fieldName)) {
|
| - return JS('String', '#', name);
|
| - }
|
| - }
|
| - }
|
| -}
|
| -
|
| -bool jsHasOwnProperty(var jsObject, String property) {
|
| - return JS('bool', r'#.hasOwnProperty(#)', jsObject, property);
|
| -}
|
| -
|
| -jsPropertyAccess(var jsObject, String property) {
|
| - return JS('var', r'#[#]', jsObject, property);
|
| -}
|
| -
|
| -/**
|
| - * Called at the end of unaborted switch cases to get the singleton
|
| - * FallThroughError exception that will be thrown.
|
| - */
|
| -getFallThroughError() => new FallThroughErrorImplementation();
|
| -
|
| -/**
|
| - * A metadata annotation describing the types instantiated by a native element.
|
| - *
|
| - * The annotation is valid on a native method and a field of a native class.
|
| - *
|
| - * By default, a field of a native class is seen as an instantiation point for
|
| - * all native classes that are a subtype of the field's type, and a native
|
| - * method is seen as an instantiation point fo all native classes that are a
|
| - * subtype of the method's return type, or the argument types of the declared
|
| - * type of the method's callback parameter.
|
| - *
|
| - * An @[Creates] annotation overrides the default set of instantiated types. If
|
| - * one or more @[Creates] annotations are present, the type of the native
|
| - * element is ignored, and the union of @[Creates] annotations is used instead.
|
| - * The names in the strings are resolved and the program will fail to compile
|
| - * with dart2js if they do not name types.
|
| - *
|
| - * The argument to [Creates] is a string. The string is parsed as the names of
|
| - * one or more types, separated by vertical bars `|`. There are some special
|
| - * names:
|
| - *
|
| - * * `=Object`. This means 'exactly Object', which is a plain JavaScript object
|
| - * with properties and none of the subtypes of Object.
|
| - *
|
| - * Example: we may know that a method always returns a specific implementation:
|
| - *
|
| - * @Creates('_NodeList')
|
| - * List<Node> getElementsByTagName(String tag) native;
|
| - *
|
| - * Useful trick: A method can be marked as not instantiating any native classes
|
| - * with the annotation `@Creates('Null')`. This is useful for fields on native
|
| - * classes that are used only in Dart code.
|
| - *
|
| - * @Creates('Null')
|
| - * var _cachedFoo;
|
| - */
|
| -class Creates {
|
| - final String types;
|
| - const Creates(this.types);
|
| -}
|
| -
|
| -/**
|
| - * A metadata annotation describing the types returned or yielded by a native
|
| - * element.
|
| - *
|
| - * The annotation is valid on a native method and a field of a native class.
|
| - *
|
| - * By default, a native method or field is seen as returning or yielding all
|
| - * subtypes if the method return type or field type. This annotation allows a
|
| - * more precise set of types to be specified.
|
| - *
|
| - * See [Creates] for the syntax of the argument.
|
| - *
|
| - * Example: IndexedDB keys are numbers, strings and JavaScript Arrays of keys.
|
| - *
|
| - * @Returns('String|num|JSExtendableArray')
|
| - * dynamic key;
|
| - *
|
| - * // Equivalent:
|
| - * @Returns('String') @Returns('num') @Returns('JSExtendableArray')
|
| - * dynamic key;
|
| - */
|
| -class Returns {
|
| - final String types;
|
| - const Returns(this.types);
|
| -}
|
| -
|
| -/**
|
| - * A metadata annotation placed on native methods and fields of native classes
|
| - * to specify the JavaScript name.
|
| - *
|
| - * This example declares a Dart field + getter + setter called `$dom_title` that
|
| - * corresponds to the JavaScript property `title`.
|
| - *
|
| - * class Docmument native "*Foo" {
|
| - * @JSName('title')
|
| - * String $dom_title;
|
| - * }
|
| - */
|
| -class JSName {
|
| - final String name;
|
| - const JSName(this.name);
|
| -}
|
| -
|
| -/**
|
| - * The following methods are called by the runtime to implement
|
| - * checked mode and casts. We specialize each primitive type (eg int, bool), and
|
| - * use the compiler's convention to do is-checks on regular objects.
|
| - */
|
| -boolConversionCheck(value) {
|
| - if (value is bool) return value;
|
| - // One of the following checks will always fail.
|
| - boolTypeCheck(value);
|
| - assert(value != null);
|
| - return false;
|
| -}
|
| -
|
| -stringTypeCheck(value) {
|
| - if (value == null) return value;
|
| - if (value is String) return value;
|
| - throw new TypeErrorImplementation(value, 'String');
|
| -}
|
| -
|
| -stringTypeCast(value) {
|
| - if (value is String || value == null) return value;
|
| - // TODO(lrn): When reified types are available, pass value.class and String.
|
| - throw new CastErrorImplementation(
|
| - Primitives.objectTypeName(value), 'String');
|
| -}
|
| -
|
| -doubleTypeCheck(value) {
|
| - if (value == null) return value;
|
| - if (value is double) return value;
|
| - throw new TypeErrorImplementation(value, 'double');
|
| -}
|
| -
|
| -doubleTypeCast(value) {
|
| - if (value is double || value == null) return value;
|
| - throw new CastErrorImplementation(
|
| - Primitives.objectTypeName(value), 'double');
|
| -}
|
| -
|
| -numTypeCheck(value) {
|
| - if (value == null) return value;
|
| - if (value is num) return value;
|
| - throw new TypeErrorImplementation(value, 'num');
|
| -}
|
| -
|
| -numTypeCast(value) {
|
| - if (value is num || value == null) return value;
|
| - throw new CastErrorImplementation(
|
| - Primitives.objectTypeName(value), 'num');
|
| -}
|
| -
|
| -boolTypeCheck(value) {
|
| - if (value == null) return value;
|
| - if (value is bool) return value;
|
| - throw new TypeErrorImplementation(value, 'bool');
|
| -}
|
| -
|
| -boolTypeCast(value) {
|
| - if (value is bool || value == null) return value;
|
| - throw new CastErrorImplementation(
|
| - Primitives.objectTypeName(value), 'bool');
|
| -}
|
| -
|
| -intTypeCheck(value) {
|
| - if (value == null) return value;
|
| - if (value is int) return value;
|
| - throw new TypeErrorImplementation(value, 'int');
|
| -}
|
| -
|
| -intTypeCast(value) {
|
| - if (value is int || value == null) return value;
|
| - throw new CastErrorImplementation(
|
| - Primitives.objectTypeName(value), 'int');
|
| -}
|
| -
|
| -void propertyTypeError(value, property) {
|
| - // Cuts the property name to the class name.
|
| - String name = property.substring(3, property.length);
|
| - throw new TypeErrorImplementation(value, name);
|
| -}
|
| -
|
| -void propertyTypeCastError(value, property) {
|
| - // Cuts the property name to the class name.
|
| - String actualType = Primitives.objectTypeName(value);
|
| - String expectedType = property.substring(3, property.length);
|
| - throw new CastErrorImplementation(actualType, expectedType);
|
| -}
|
| -
|
| -/**
|
| - * For types that are not supertypes of native (eg DOM) types,
|
| - * we emit a simple property check to check that an object implements
|
| - * that type.
|
| - */
|
| -propertyTypeCheck(value, property) {
|
| - if (value == null) return value;
|
| - if (JS('bool', '!!#[#]', value, property)) return value;
|
| - propertyTypeError(value, property);
|
| -}
|
| -
|
| -/**
|
| - * For types that are not supertypes of native (eg DOM) types,
|
| - * we emit a simple property check to check that an object implements
|
| - * that type.
|
| - */
|
| -propertyTypeCast(value, property) {
|
| - if (value == null || JS('bool', '!!#[#]', value, property)) return value;
|
| - propertyTypeCastError(value, property);
|
| -}
|
| -
|
| -/**
|
| - * For types that are supertypes of native (eg DOM) types, we use the
|
| - * interceptor for the class because we cannot add a JS property to the
|
| - * prototype at load time.
|
| - */
|
| -interceptedTypeCheck(value, property) {
|
| - if (value == null) return value;
|
| - if ((identical(JS('String', 'typeof #', value), 'object'))
|
| - && JS('bool', '#[#]', getInterceptor(value), property)) {
|
| - return value;
|
| - }
|
| - propertyTypeError(value, property);
|
| -}
|
| -
|
| -/**
|
| - * For types that are supertypes of native (eg DOM) types, we use the
|
| - * interceptor for the class because we cannot add a JS property to the
|
| - * prototype at load time.
|
| - */
|
| -interceptedTypeCast(value, property) {
|
| - if (value == null
|
| - || ((JS('bool', 'typeof # === "object"', value))
|
| - && JS('bool', '#[#]', getInterceptor(value), property))) {
|
| - return value;
|
| - }
|
| - propertyTypeCastError(value, property);
|
| -}
|
| -
|
| -/**
|
| - * Specialization of the type check for num and String and their
|
| - * supertype since [value] can be a JS primitive.
|
| - */
|
| -numberOrStringSuperTypeCheck(value, property) {
|
| - if (value == null) return value;
|
| - if (value is String) return value;
|
| - if (value is num) return value;
|
| - if (JS('bool', '!!#[#]', value, property)) return value;
|
| - propertyTypeError(value, property);
|
| -}
|
| -
|
| -numberOrStringSuperTypeCast(value, property) {
|
| - if (value is String) return value;
|
| - if (value is num) return value;
|
| - return propertyTypeCast(value, property);
|
| -}
|
| -
|
| -numberOrStringSuperNativeTypeCheck(value, property) {
|
| - if (value == null) return value;
|
| - if (value is String) return value;
|
| - if (value is num) return value;
|
| - if (JS('bool', '#[#]', getInterceptor(value), property)) return value;
|
| - propertyTypeError(value, property);
|
| -}
|
| -
|
| -numberOrStringSuperNativeTypeCast(value, property) {
|
| - if (value == null) return value;
|
| - if (value is String) return value;
|
| - if (value is num) return value;
|
| - if (JS('bool', '#[#]', getInterceptor(value), property)) return value;
|
| - propertyTypeCastError(value, property);
|
| -}
|
| -
|
| -/**
|
| - * Specialization of the type check for String and its supertype
|
| - * since [value] can be a JS primitive.
|
| - */
|
| -stringSuperTypeCheck(value, property) {
|
| - if (value == null) return value;
|
| - if (value is String) return value;
|
| - if (JS('bool', '!!#[#]', value, property)) return value;
|
| - propertyTypeError(value, property);
|
| -}
|
| -
|
| -stringSuperTypeCast(value, property) {
|
| - if (value is String) return value;
|
| - return propertyTypeCast(value, property);
|
| -}
|
| -
|
| -stringSuperNativeTypeCheck(value, property) {
|
| - if (value == null) return value;
|
| - if (value is String) return value;
|
| - if (JS('bool', '#[#]', getInterceptor(value), property)) return value;
|
| - propertyTypeError(value, property);
|
| -}
|
| -
|
| -stringSuperNativeTypeCast(value, property) {
|
| - if (value is String || value == null) return value;
|
| - if (JS('bool', '#[#]', getInterceptor(value), property)) return value;
|
| - propertyTypeCastError(value, property);
|
| -}
|
| -
|
| -/**
|
| - * Specialization of the type check for List and its supertypes,
|
| - * since [value] can be a JS array.
|
| - */
|
| -listTypeCheck(value) {
|
| - if (value == null) return value;
|
| - if (value is List) return value;
|
| - throw new TypeErrorImplementation(value, 'List');
|
| -}
|
| -
|
| -listTypeCast(value) {
|
| - if (value is List || value == null) return value;
|
| - throw new CastErrorImplementation(
|
| - Primitives.objectTypeName(value), 'List');
|
| -}
|
| -
|
| -listSuperTypeCheck(value, property) {
|
| - if (value == null) return value;
|
| - if (value is List) return value;
|
| - if (JS('bool', '!!#[#]', value, property)) return value;
|
| - propertyTypeError(value, property);
|
| -}
|
| -
|
| -listSuperTypeCast(value, property) {
|
| - if (value is List) return value;
|
| - return propertyTypeCast(value, property);
|
| -}
|
| -
|
| -listSuperNativeTypeCheck(value, property) {
|
| - if (value == null) return value;
|
| - if (value is List) return value;
|
| - if (JS('bool', '#[#]', getInterceptor(value), property)) return value;
|
| - propertyTypeError(value, property);
|
| -}
|
| -
|
| -listSuperNativeTypeCast(value, property) {
|
| - if (value is List || value == null) return value;
|
| - if (JS('bool', '#[#]', getInterceptor(value), property)) return value;
|
| - propertyTypeCastError(value, property);
|
| -}
|
| -
|
| -voidTypeCheck(value) {
|
| - if (value == null) return value;
|
| - throw new TypeErrorImplementation(value, 'void');
|
| -}
|
| -
|
| -checkMalformedType(value, message) {
|
| - if (value == null) return value;
|
| - throw new TypeErrorImplementation.fromMessage(message);
|
| -}
|
| -
|
| -@NoInline()
|
| -void checkDeferredIsLoaded(String loadId, String uri) {
|
| - if (!_loadedLibraries.contains(loadId)) {
|
| - throw new DeferredNotLoadedError(uri);
|
| - }
|
| -}
|
| -
|
| -/**
|
| - * Special interface recognized by the compiler and implemented by DOM
|
| - * objects that support integer indexing. This interface is not
|
| - * visible to anyone, and is only injected into special libraries.
|
| - */
|
| -abstract class JavaScriptIndexingBehavior extends JSMutableIndexable {
|
| -}
|
| -
|
| -// TODO(lrn): These exceptions should be implemented in core.
|
| -// When they are, remove the 'Implementation' here.
|
| -
|
| -/** Thrown by type assertions that fail. */
|
| -class TypeErrorImplementation extends Error implements TypeError {
|
| - final String message;
|
| -
|
| - /**
|
| - * Normal type error caused by a failed subtype test.
|
| - */
|
| - TypeErrorImplementation(Object value, String type)
|
| - : message = "type '${Primitives.objectTypeName(value)}' is not a subtype "
|
| - "of type '$type'";
|
| -
|
| - TypeErrorImplementation.fromMessage(String this.message);
|
| -
|
| - String toString() => message;
|
| -}
|
| -
|
| -/** Thrown by the 'as' operator if the cast isn't valid. */
|
| -class CastErrorImplementation extends Error implements CastError {
|
| - // TODO(lrn): Rename to CastError (and move implementation into core).
|
| - final String message;
|
| -
|
| - /**
|
| - * Normal cast error caused by a failed type cast.
|
| - */
|
| - CastErrorImplementation(Object actualType, Object expectedType)
|
| - : message = "CastError: Casting value of type $actualType to"
|
| - " incompatible type $expectedType";
|
| -
|
| - String toString() => message;
|
| -}
|
| -
|
| -class FallThroughErrorImplementation extends FallThroughError {
|
| - FallThroughErrorImplementation();
|
| - String toString() => "Switch case fall-through.";
|
| -}
|
| -
|
| -/**
|
| - * Helper function for implementing asserts. The compiler treats this specially.
|
| - */
|
| -void assertHelper(condition) {
|
| - // Do a bool check first because it is common and faster than 'is Function'.
|
| - if (condition is !bool) {
|
| - if (condition is Function) condition = condition();
|
| - if (condition is !bool) {
|
| - throw new TypeErrorImplementation(condition, 'bool');
|
| - }
|
| - }
|
| - // Compare to true to avoid boolean conversion check in checked
|
| - // mode.
|
| - if (true != condition) throw new AssertionError();
|
| -}
|
| -
|
| -/**
|
| - * Called by generated code when a method that must be statically
|
| - * resolved cannot be found.
|
| - */
|
| -void throwNoSuchMethod(obj, name, arguments, expectedArgumentNames) {
|
| - Symbol memberName = new _symbol_dev.Symbol.unvalidated(name);
|
| - throw new NoSuchMethodError(obj, memberName, arguments,
|
| - new Map<Symbol, dynamic>(),
|
| - expectedArgumentNames);
|
| -}
|
| -
|
| -/**
|
| - * Called by generated code when a static field's initializer references the
|
| - * field that is currently being initialized.
|
| - */
|
| -void throwCyclicInit(String staticName) {
|
| - throw new CyclicInitializationError(
|
| - "Cyclic initialization for static $staticName");
|
| -}
|
| -
|
| -/**
|
| - * Error thrown when a runtime error occurs.
|
| - */
|
| -class RuntimeError extends Error {
|
| - final message;
|
| - RuntimeError(this.message);
|
| - String toString() => "RuntimeError: $message";
|
| -}
|
| -
|
| -class DeferredNotLoadedError extends Error implements NoSuchMethodError {
|
| - String libraryName;
|
| -
|
| - DeferredNotLoadedError(this.libraryName);
|
| -
|
| - String toString() {
|
| - return "Deferred library $libraryName was not loaded.";
|
| - }
|
| -}
|
| -
|
| -abstract class RuntimeType {
|
| - const RuntimeType();
|
| -
|
| - toRti();
|
| -}
|
| -
|
| -class RuntimeFunctionType extends RuntimeType {
|
| - final RuntimeType returnType;
|
| - final List<RuntimeType> parameterTypes;
|
| - final List<RuntimeType> optionalParameterTypes;
|
| - final namedParameters;
|
| -
|
| - static var /* bool */ inAssert = false;
|
| -
|
| - RuntimeFunctionType(this.returnType,
|
| - this.parameterTypes,
|
| - this.optionalParameterTypes,
|
| - this.namedParameters);
|
| -
|
| - bool get isVoid => returnType is VoidRuntimeType;
|
| -
|
| - /// Called from generated code. [expression] is a Dart object and this method
|
| - /// returns true if [this] is a supertype of [expression].
|
| - @NoInline() @NoSideEffects()
|
| - bool _isTest(expression) {
|
| - var functionTypeObject = _extractFunctionTypeObjectFrom(expression);
|
| - return functionTypeObject == null
|
| - ? false
|
| - : isFunctionSubtype(functionTypeObject, toRti());
|
| - }
|
| -
|
| - @NoInline() @NoSideEffects()
|
| - _asCheck(expression) {
|
| - // Type inferrer doesn't think this is called with dynamic arguments.
|
| - return _check(JS('', '#', expression), true);
|
| - }
|
| -
|
| - @NoInline() @NoSideEffects()
|
| - _assertCheck(expression) {
|
| - if (inAssert) return null;
|
| - inAssert = true; // Don't try to check this library itself.
|
| - try {
|
| - // Type inferrer don't think this is called with dynamic arguments.
|
| - return _check(JS('', '#', expression), false);
|
| - } finally {
|
| - inAssert = false;
|
| - }
|
| - }
|
| -
|
| - _check(expression, bool isCast) {
|
| - if (expression == null) return null;
|
| - if (_isTest(expression)) return expression;
|
| -
|
| - var self = new FunctionTypeInfoDecoderRing(toRti()).toString();
|
| - if (isCast) {
|
| - var functionTypeObject = _extractFunctionTypeObjectFrom(expression);
|
| - var pretty;
|
| - if (functionTypeObject != null) {
|
| - pretty = new FunctionTypeInfoDecoderRing(functionTypeObject).toString();
|
| - } else {
|
| - pretty = Primitives.objectTypeName(expression);
|
| - }
|
| - throw new CastErrorImplementation(pretty, self);
|
| - } else {
|
| - // TODO(ahe): Pass "pretty" function-type to TypeErrorImplementation?
|
| - throw new TypeErrorImplementation(expression, self);
|
| - }
|
| - }
|
| -
|
| - _extractFunctionTypeObjectFrom(o) {
|
| - var interceptor = getInterceptor(o);
|
| - return JS('bool', '# in #', JS_SIGNATURE_NAME(), interceptor)
|
| - ? JS('', '#[#]()', interceptor, JS_SIGNATURE_NAME())
|
| - : null;
|
| - }
|
| -
|
| - toRti() {
|
| - var result = JS('=Object', '{ #: "dynafunc" }', JS_FUNCTION_TYPE_TAG());
|
| - if (isVoid) {
|
| - JS('', '#[#] = true', result, JS_FUNCTION_TYPE_VOID_RETURN_TAG());
|
| - } else {
|
| - if (returnType is! DynamicRuntimeType) {
|
| - JS('', '#[#] = #', result, JS_FUNCTION_TYPE_RETURN_TYPE_TAG(),
|
| - returnType.toRti());
|
| - }
|
| - }
|
| - if (parameterTypes != null && !parameterTypes.isEmpty) {
|
| - JS('', '#[#] = #', result, JS_FUNCTION_TYPE_REQUIRED_PARAMETERS_TAG(),
|
| - listToRti(parameterTypes));
|
| - }
|
| -
|
| - if (optionalParameterTypes != null && !optionalParameterTypes.isEmpty) {
|
| - JS('', '#[#] = #', result, JS_FUNCTION_TYPE_OPTIONAL_PARAMETERS_TAG(),
|
| - listToRti(optionalParameterTypes));
|
| - }
|
| -
|
| - if (namedParameters != null) {
|
| - var namedRti = JS('=Object', '{}');
|
| - var keys = extractKeys(namedParameters);
|
| - for (var i = 0; i < keys.length; i++) {
|
| - var name = keys[i];
|
| - var rti = JS('', '#[#]', namedParameters, name).toRti();
|
| - JS('', '#[#] = #', namedRti, name, rti);
|
| - }
|
| - JS('', '#[#] = #', result, JS_FUNCTION_TYPE_NAMED_PARAMETERS_TAG(),
|
| - namedRti);
|
| - }
|
| -
|
| - return result;
|
| - }
|
| -
|
| - static listToRti(list) {
|
| - list = JS('JSFixedArray', '#', list);
|
| - var result = JS('JSExtendableArray', '[]');
|
| - for (var i = 0; i < list.length; i++) {
|
| - JS('', '#.push(#)', result, list[i].toRti());
|
| - }
|
| - return result;
|
| - }
|
| -
|
| - String toString() {
|
| - String result = '(';
|
| - bool needsComma = false;
|
| - if (parameterTypes != null) {
|
| - for (var i = 0; i < parameterTypes.length; i++) {
|
| - RuntimeType type = parameterTypes[i];
|
| - if (needsComma) result += ', ';
|
| - result += '$type';
|
| - needsComma = true;
|
| - }
|
| - }
|
| - if (optionalParameterTypes != null && !optionalParameterTypes.isEmpty) {
|
| - if (needsComma) result += ', ';
|
| - needsComma = false;
|
| - result += '[';
|
| - for (var i = 0; i < optionalParameterTypes.length; i++) {
|
| - RuntimeType type = optionalParameterTypes[i];
|
| - if (needsComma) result += ', ';
|
| - result += '$type';
|
| - needsComma = true;
|
| - }
|
| - result += ']';
|
| - } else if (namedParameters != null) {
|
| - if (needsComma) result += ', ';
|
| - needsComma = false;
|
| - result += '{';
|
| - var keys = extractKeys(namedParameters);
|
| - for (var i = 0; i < keys.length; i++) {
|
| - var name = keys[i];
|
| - if (needsComma) result += ', ';
|
| - var rti = JS('', '#[#]', namedParameters, name).toRti();
|
| - result += '$rti ${JS("String", "#", name)}';
|
| - needsComma = true;
|
| - }
|
| - result += '}';
|
| - }
|
| -
|
| - result += ') -> $returnType';
|
| - return result;
|
| - }
|
| -}
|
| -
|
| -RuntimeFunctionType buildFunctionType(returnType,
|
| - parameterTypes,
|
| - optionalParameterTypes) {
|
| - return new RuntimeFunctionType(
|
| - returnType,
|
| - parameterTypes,
|
| - optionalParameterTypes,
|
| - null);
|
| -}
|
| -
|
| -RuntimeFunctionType buildNamedFunctionType(returnType,
|
| - parameterTypes,
|
| - namedParameters) {
|
| - return new RuntimeFunctionType(
|
| - returnType,
|
| - parameterTypes,
|
| - null,
|
| - namedParameters);
|
| -}
|
| -
|
| -RuntimeType buildInterfaceType(rti, typeArguments) {
|
| - String name = JS('String|Null', r'#.name', rti);
|
| - if (typeArguments == null || typeArguments.isEmpty) {
|
| - return new RuntimeTypePlain(name);
|
| - }
|
| - return new RuntimeTypeGeneric(name, typeArguments, null);
|
| -}
|
| -
|
| -class DynamicRuntimeType extends RuntimeType {
|
| - const DynamicRuntimeType();
|
| -
|
| - String toString() => 'dynamic';
|
| -
|
| - toRti() => null;
|
| -}
|
| -
|
| -RuntimeType getDynamicRuntimeType() => const DynamicRuntimeType();
|
| -
|
| -class VoidRuntimeType extends RuntimeType {
|
| - const VoidRuntimeType();
|
| -
|
| - String toString() => 'void';
|
| -
|
| - toRti() => throw 'internal error';
|
| -}
|
| -
|
| -RuntimeType getVoidRuntimeType() => const VoidRuntimeType();
|
| -
|
| -/**
|
| - * Meta helper for function type tests.
|
| - *
|
| - * A "meta helper" is a helper function that is never called but simulates how
|
| - * generated code behaves as far as resolution and type inference is concerned.
|
| - */
|
| -functionTypeTestMetaHelper() {
|
| - var dyn = JS('', 'x');
|
| - var dyn2 = JS('', 'x');
|
| - List fixedListOrNull = JS('JSFixedArray|Null', 'x');
|
| - List fixedListOrNull2 = JS('JSFixedArray|Null', 'x');
|
| - List fixedList = JS('JSFixedArray', 'x');
|
| - // TODO(ahe): Can we use [UnknownJavaScriptObject] below?
|
| - var /* UnknownJavaScriptObject */ jsObject = JS('=Object', 'x');
|
| -
|
| - buildFunctionType(dyn, fixedListOrNull, fixedListOrNull2);
|
| - buildNamedFunctionType(dyn, fixedList, jsObject);
|
| - buildInterfaceType(dyn, fixedListOrNull);
|
| - getDynamicRuntimeType();
|
| - getVoidRuntimeType();
|
| - convertRtiToRuntimeType(dyn);
|
| - dyn._isTest(dyn2);
|
| - dyn._asCheck(dyn2);
|
| - dyn._assertCheck(dyn2);
|
| -}
|
| -
|
| -RuntimeType convertRtiToRuntimeType(rti) {
|
| - if (rti == null) {
|
| - return getDynamicRuntimeType();
|
| - } else if (JS('bool', 'typeof # == "function"', rti)) {
|
| - return new RuntimeTypePlain(JS('String', r'rti.name'));
|
| - } else if (JS('bool', '#.constructor == Array', rti)) {
|
| - List list = JS('JSFixedArray', '#', rti);
|
| - String name = JS('String', r'#.name', list[0]);
|
| - List arguments = [];
|
| - for (int i = 1; i < list.length; i++) {
|
| - arguments.add(convertRtiToRuntimeType(list[i]));
|
| - }
|
| - return new RuntimeTypeGeneric(name, arguments, rti);
|
| - } else if (JS('bool', '"func" in #', rti)) {
|
| - return new FunctionTypeInfoDecoderRing(rti).toRuntimeType();
|
| - } else {
|
| - throw new RuntimeError(
|
| - "Cannot convert "
|
| - "'${JS('String', 'JSON.stringify(#)', rti)}' to RuntimeType.");
|
| - }
|
| -}
|
| -
|
| -class RuntimeTypePlain extends RuntimeType {
|
| - final String name;
|
| -
|
| - RuntimeTypePlain(this.name);
|
| -
|
| - toRti() {
|
| - var rti = JS('', 'init.allClasses[#]', name);
|
| - if (rti == null) throw "no type for '$name'";
|
| - return rti;
|
| - }
|
| -
|
| - String toString() => name;
|
| -}
|
| -
|
| -class RuntimeTypeGeneric extends RuntimeType {
|
| - final String name;
|
| - final List<RuntimeType> arguments;
|
| - var rti;
|
| -
|
| - RuntimeTypeGeneric(this.name, this.arguments, this.rti);
|
| -
|
| - toRti() {
|
| - if (rti != null) return rti;
|
| - var result = JS('JSExtendableArray', '[init.allClasses[#]]', name);
|
| - if (result[0] == null) {
|
| - throw "no type for '$name<...>'";
|
| - }
|
| - for (RuntimeType argument in arguments) {
|
| - JS('', '#.push(#)', result, argument.toRti());
|
| - }
|
| - return rti = result;
|
| - }
|
| -
|
| - String toString() => '$name<${arguments.join(", ")}>';
|
| -}
|
| -
|
| -class FunctionTypeInfoDecoderRing {
|
| - final _typeData;
|
| - String _cachedToString;
|
| -
|
| - FunctionTypeInfoDecoderRing(this._typeData);
|
| -
|
| - bool get _hasReturnType => JS('bool', '"ret" in #', _typeData);
|
| - get _returnType => JS('', '#.ret', _typeData);
|
| -
|
| - bool get _isVoid => JS('bool', '!!#.void', _typeData);
|
| -
|
| - bool get _hasArguments => JS('bool', '"args" in #', _typeData);
|
| - List get _arguments => JS('JSExtendableArray', '#.args', _typeData);
|
| -
|
| - bool get _hasOptionalArguments => JS('bool', '"opt" in #', _typeData);
|
| - List get _optionalArguments => JS('JSExtendableArray', '#.opt', _typeData);
|
| -
|
| - bool get _hasNamedArguments => JS('bool', '"named" in #', _typeData);
|
| - get _namedArguments => JS('=Object', '#.named', _typeData);
|
| -
|
| - RuntimeType toRuntimeType() {
|
| - // TODO(ahe): Implement this (and update return type).
|
| - return const DynamicRuntimeType();
|
| - }
|
| -
|
| - String _convert(type) {
|
| - String result = runtimeTypeToString(type);
|
| - if (result != null) return result;
|
| - if (JS('bool', '"func" in #', type)) {
|
| - return new FunctionTypeInfoDecoderRing(type).toString();
|
| - } else {
|
| - throw 'bad type';
|
| - }
|
| - }
|
| -
|
| - String toString() {
|
| - if (_cachedToString != null) return _cachedToString;
|
| - var s = "(";
|
| - var sep = '';
|
| - if (_hasArguments) {
|
| - for (var argument in _arguments) {
|
| - s += sep;
|
| - s += _convert(argument);
|
| - sep = ', ';
|
| - }
|
| - }
|
| - if (_hasOptionalArguments) {
|
| - s += '$sep[';
|
| - sep = '';
|
| - for (var argument in _optionalArguments) {
|
| - s += sep;
|
| - s += _convert(argument);
|
| - sep = ', ';
|
| - }
|
| - s += ']';
|
| - }
|
| - if (_hasNamedArguments) {
|
| - s += '$sep{';
|
| - sep = '';
|
| - for (var name in extractKeys(_namedArguments)) {
|
| - s += sep;
|
| - s += '$name: ';
|
| - s += _convert(JS('', '#[#]', _namedArguments, name));
|
| - sep = ', ';
|
| - }
|
| - s += '}';
|
| - }
|
| - s += ') -> ';
|
| - if (_isVoid) {
|
| - s += 'void';
|
| - } else if (_hasReturnType) {
|
| - s += _convert(_returnType);
|
| - } else {
|
| - s += 'dynamic';
|
| - }
|
| - return _cachedToString = "$s";
|
| - }
|
| -}
|
| -
|
| -// TODO(ahe): Remove this class and call noSuchMethod instead.
|
| -class UnimplementedNoSuchMethodError extends Error
|
| - implements NoSuchMethodError {
|
| - final String _message;
|
| -
|
| - UnimplementedNoSuchMethodError(this._message);
|
| -
|
| - String toString() => "Unsupported operation: $_message";
|
| -}
|
| -
|
| -/**
|
| - * Creates a random number with 64 bits of randomness.
|
| - *
|
| - * This will be truncated to the 53 bits available in a double.
|
| - */
|
| -int random64() {
|
| - // TODO(lrn): Use a secure random source.
|
| - int int32a = JS("int", "(Math.random() * 0x100000000) >>> 0");
|
| - int int32b = JS("int", "(Math.random() * 0x100000000) >>> 0");
|
| - return int32a + int32b * 0x100000000;
|
| -}
|
| -
|
| -/**
|
| - * Returns a property name for placing data on JavaScript objects shared between
|
| - * DOM isolates. This happens when multiple programs are loaded in the same
|
| - * JavaScript context (i.e. page). The name is based on [name] but with an
|
| - * additional part that is unique for each isolate.
|
| - *
|
| - * The form of the name is '___dart_$name_$id'.
|
| - */
|
| -String getIsolateAffinityTag(String name) {
|
| - return JS('String', 'init.getIsolateTag(#)', name);
|
| -}
|
| -
|
| -typedef Future<Null> LoadLibraryFunctionType();
|
| -
|
| -LoadLibraryFunctionType _loadLibraryWrapper(String loadId) {
|
| - return () => loadDeferredLibrary(loadId);
|
| -}
|
| -
|
| -final Map<String, Future<Null>> _loadingLibraries = <String, Future<Null>>{};
|
| -final Set<String> _loadedLibraries = new Set<String>();
|
| -
|
| -Future<Null> loadDeferredLibrary(String loadId) {
|
| - List<String> librariesToLoad = JS('JSExtendableArray|Null',
|
| - 'init.librariesToLoad[#]',
|
| - loadId);
|
| - if (librariesToLoad == null) return new Future.value(null);
|
| - return Future.wait(librariesToLoad.map(
|
| - (String hunkName) => _loadHunk(hunkName))).then((_) {
|
| - for (String hunkName in librariesToLoad) {
|
| - // TODO(floitsch): Replace unsafe access to embedded global.
|
| - JS('void', 'init.initializeLoadedHunk(#)', hunkName);
|
| - }
|
| - _loadedLibraries.add(loadId);
|
| - });
|
| -}
|
| -
|
| -Future<Null> _loadHunk(String hunkName) {
|
| - // TODO(ahe): Validate libraryName. Kasper points out that you want
|
| - // to be able to experiment with the effect of toggling @DeferLoad,
|
| - // so perhaps we should silently ignore "bad" library names.
|
| - Future<Null> future = _loadingLibraries[hunkName];
|
| - if (future != null) {
|
| - return future.then((_) => null);
|
| - }
|
| -
|
| - String uri = IsolateNatives.thisScript;
|
| -
|
| - int index = uri.lastIndexOf('/');
|
| - uri = '${uri.substring(0, index + 1)}$hunkName';
|
| -
|
| - if (Primitives.isJsshell || Primitives.isD8) {
|
| - // TODO(ahe): Move this code to a JavaScript command helper script that is
|
| - // not included in generated output.
|
| - return _loadingLibraries[hunkName] = new Future<Null>(() {
|
| - try {
|
| - // Create a new function to avoid getting access to current function
|
| - // context.
|
| - JS('void', '(new Function(#))()', 'load("$uri")');
|
| - } catch (error, stackTrace) {
|
| - throw new DeferredLoadException("Loading $uri failed.");
|
| - }
|
| - return null;
|
| - });
|
| - } else if (isWorker()) {
|
| - // We are in a web worker. Load the code with an XMLHttpRequest.
|
| - return _loadingLibraries[hunkName] = new Future<Null>(() {
|
| - Completer completer = new Completer<Null>();
|
| - enterJsAsync();
|
| - Future<Null> leavingFuture = completer.future.whenComplete(() {
|
| - leaveJsAsync();
|
| - });
|
| -
|
| - int index = uri.lastIndexOf('/');
|
| - uri = '${uri.substring(0, index + 1)}$hunkName';
|
| - var xhr = JS('dynamic', 'new XMLHttpRequest()');
|
| - JS('void', '#.open("GET", #)', xhr, uri);
|
| - JS('void', '#.addEventListener("load", #, false)',
|
| - xhr, convertDartClosureToJS((event) {
|
| - if (JS('int', '#.status', xhr) != 200) {
|
| - completer.completeError(
|
| - new DeferredLoadException("Loading $uri failed."));
|
| - return;
|
| - }
|
| - String code = JS('String', '#.responseText', xhr);
|
| - try {
|
| - // Create a new function to avoid getting access to current function
|
| - // context.
|
| - JS('void', '(new Function(#))()', code);
|
| - } catch (error, stackTrace) {
|
| - completer.completeError(
|
| - new DeferredLoadException("Evaluating $uri failed."));
|
| - return;
|
| - }
|
| - completer.complete(null);
|
| - }, 1));
|
| -
|
| - var fail = convertDartClosureToJS((event) {
|
| - new DeferredLoadException("Loading $uri failed.");
|
| - }, 1);
|
| - JS('void', '#.addEventListener("error", #, false)', xhr, fail);
|
| - JS('void', '#.addEventListener("abort", #, false)', xhr, fail);
|
| -
|
| - JS('void', '#.send()', xhr);
|
| - return leavingFuture;
|
| - });
|
| - }
|
| - // We are in a dom-context.
|
| - return _loadingLibraries[hunkName] = new Future<Null>(() {
|
| - Completer completer = new Completer<Null>();
|
| - // Inject a script tag.
|
| - var script = JS('', 'document.createElement("script")');
|
| - JS('', '#.type = "text/javascript"', script);
|
| - JS('', '#.src = #', script, uri);
|
| - JS('', '#.addEventListener("load", #, false)',
|
| - script, convertDartClosureToJS((event) {
|
| - completer.complete(null);
|
| - }, 1));
|
| - JS('', '#.addEventListener("error", #, false)',
|
| - script, convertDartClosureToJS((event) {
|
| - completer.completeError(
|
| - new DeferredLoadException("Loading $uri failed."));
|
| - }, 1));
|
| - JS('', 'document.body.appendChild(#)', script);
|
| -
|
| - return completer.future;
|
| - });
|
| -}
|
| -
|
| -class MainError extends Error implements NoSuchMethodError {
|
| - final String _message;
|
| -
|
| - MainError(this._message);
|
| -
|
| - String toString() => 'NoSuchMethodError: $_message';
|
| -}
|
| -
|
| -void missingMain() {
|
| - throw new MainError("No top-level function named 'main'.");
|
| -}
|
| -
|
| -void badMain() {
|
| - throw new MainError("'main' is not a function.");
|
| -}
|
| -
|
| -void mainHasTooManyParameters() {
|
| - throw new MainError("'main' expects too many parameters.");
|
| -}
|
|
|
Chromium Code Reviews
Issue 538513002:
Move js library back into compiler directory. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart