| // Copyright (c) 2012, 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. |
| |
| class _InvocationMirror implements Invocation { |
| // Constants describing the invocation type. |
| // _FIELD cannot be generated by regular invocation mirrors. |
| static const int _METHOD = 0; |
| static const int _GETTER = 1; |
| static const int _SETTER = 2; |
| static const int _FIELD = 3; |
| static const int _TYPE_SHIFT = 0; |
| static const int _TYPE_BITS = 2; |
| static const int _TYPE_MASK = (1 << _TYPE_BITS) - 1; |
| |
| // These values, except _DYNAMIC, are only used when throwing |
| // NoSuchMethodError for compile-time resolution failures. |
| static const int _DYNAMIC = 0; |
| static const int _STATIC = 1; |
| static const int _CONSTRUCTOR = 2; |
| static const int _TOP_LEVEL = 3; |
| static const int _CALL_SHIFT = _TYPE_BITS; |
| static const int _CALL_BITS = 2; |
| static const int _CALL_MASK = (1 << _CALL_BITS) - 1; |
| |
| // Internal representation of the invocation mirror. |
| final String _functionName; |
| final List _argumentsDescriptor; |
| final List _arguments; |
| |
| // External representation of the invocation mirror; populated on demand. |
| Symbol _memberName; |
| int _type; |
| List _positionalArguments; |
| Map<Symbol, dynamic> _namedArguments; |
| |
| void _setMemberNameAndType() { |
| if (_functionName.startsWith("get:")) { |
| _type = _GETTER; |
| _memberName = |
| new _collection_dev.Symbol.unvalidated(_functionName.substring(4)); |
| } else if (_functionName.startsWith("set:")) { |
| _type = _SETTER; |
| _memberName = |
| new _collection_dev.Symbol.unvalidated( |
| _functionName.substring(4) + "="); |
| } else { |
| _type = _METHOD; |
| _memberName = new _collection_dev.Symbol.unvalidated(_functionName); |
| } |
| } |
| |
| Symbol get memberName { |
| if (_memberName == null) { |
| _setMemberNameAndType(); |
| } |
| return _memberName; |
| } |
| |
| List get positionalArguments { |
| if (_positionalArguments == null) { |
| int numPositionalArguments = _argumentsDescriptor[1]; |
| // Exclude receiver. |
| _positionalArguments = _arguments.sublist(1, numPositionalArguments); |
| } |
| return _positionalArguments; |
| } |
| |
| Map<Symbol, dynamic> get namedArguments { |
| if (_namedArguments == null) { |
| _namedArguments = new Map<Symbol, dynamic>(); |
| int numArguments = _argumentsDescriptor[0] - 1; // Exclude receiver. |
| int numPositionalArguments = _argumentsDescriptor[1] - 1; |
| int numNamedArguments = numArguments - numPositionalArguments; |
| for (int i = 0; i < numNamedArguments; i++) { |
| String arg_name = _argumentsDescriptor[2 + 2*i]; |
| var arg_value = _arguments[_argumentsDescriptor[3 + 2*i]]; |
| _namedArguments[new _collection_dev.Symbol.unvalidated(arg_name)] = |
| arg_value; |
| } |
| } |
| return _namedArguments; |
| } |
| |
| bool get isMethod { |
| if (_type == null) { |
| _setMemberNameAndType(); |
| } |
| return _type == _METHOD; |
| } |
| |
| bool get isAccessor { |
| if (_type == null) { |
| _setMemberNameAndType(); |
| } |
| return _type != _METHOD; |
| } |
| |
| bool get isGetter { |
| if (_type == null) { |
| _setMemberNameAndType(); |
| } |
| return _type == _GETTER; |
| } |
| |
| bool get isSetter { |
| if (_type == null) { |
| _setMemberNameAndType(); |
| } |
| return _type == _SETTER; |
| } |
| |
| _InvocationMirror(this._functionName, |
| this._argumentsDescriptor, |
| this._arguments); |
| |
| static _allocateInvocationMirror(String functionName, |
| List argumentsDescriptor, |
| List arguments) { |
| return new _InvocationMirror(functionName, argumentsDescriptor, arguments); |
| } |
| |
| static _invoke(Object receiver, |
| String functionName, |
| List argumentsDescriptor, |
| List arguments) |
| native "InvocationMirror_invoke"; |
| |
| _invokeOn(Object receiver) { |
| return _invoke(receiver, _functionName, _argumentsDescriptor, _arguments); |
| } |
| |
| // TODO(ahe): This is a hack. See _LocalInstanceMirrorImpl.delegate |
| // in mirrors_impl.dart |
| static final _invokeOnClosure = (x, y) => y._invokeOn(x); |
| } |