| // 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. |
| |
| /// Helper methods for converting a [Mirror] to a [String]. |
| library test.stringify; |
| |
| import 'dart:mirrors'; |
| |
| import 'package:expect/expect.dart'; |
| |
| name(DeclarationMirror mirror) { |
| return (mirror == null) ? '<null>' : stringify(mirror.simpleName); |
| } |
| |
| stringifyMap(Map map) { |
| var buffer = new StringBuffer(); |
| bool first = true; |
| for (String key in map.keys.map(MirrorSystem.getName).toList()..sort()) { |
| if (!first) buffer.write(', '); |
| first = false; |
| buffer.write(key); |
| buffer.write(': '); |
| buffer.write(stringify(map[new Symbol(key)])); |
| } |
| return '{$buffer}'; |
| } |
| |
| stringifyIterable(Iterable list) { |
| var buffer = new StringBuffer(); |
| bool first = true; |
| for (String value in list.map(stringify)) { |
| if (!first) buffer.write(', '); |
| first = false; |
| buffer.write(value); |
| } |
| return '[$buffer]'; |
| } |
| |
| stringifyInstance(InstanceMirror instance) { |
| var buffer = new StringBuffer(); |
| if (instance.hasReflectee) { |
| buffer.write('value = ${stringify(instance.reflectee)}'); |
| } |
| return 'Instance(${buffer})'; |
| } |
| |
| stringifySymbol(Symbol symbol) => 's(${MirrorSystem.getName(symbol)})'; |
| |
| writeDeclarationOn(DeclarationMirror mirror, StringBuffer buffer) { |
| buffer.write(stringify(mirror.simpleName)); |
| if (mirror.owner != null) { |
| buffer.write(' in '); |
| buffer.write(name(mirror.owner)); |
| } |
| if (mirror.isPrivate) buffer.write(', private'); |
| if (mirror.isTopLevel) buffer.write(', top-level'); |
| } |
| |
| writeVariableOn(VariableMirror variable, StringBuffer buffer) { |
| writeDeclarationOn(variable, buffer); |
| if (variable.isStatic) buffer.write(', static'); |
| if (variable.isFinal) buffer.write(', final'); |
| } |
| |
| stringifyVariable(VariableMirror variable) { |
| var buffer = new StringBuffer(); |
| writeVariableOn(variable, buffer); |
| return 'Variable($buffer)'; |
| } |
| |
| stringifyParameter(ParameterMirror parameter) { |
| var buffer = new StringBuffer(); |
| writeVariableOn(parameter, buffer); |
| if (parameter.isOptional) buffer.write(', optional'); |
| if (parameter.isNamed) buffer.write(', named'); |
| // TODO(6490): dart2js always returns false for hasDefaultValue. |
| if (parameter.hasDefaultValue) { |
| buffer.write(', value = ${stringify(parameter.defaultValue)}'); |
| } |
| // TODO(ahe): Move to writeVariableOn. |
| buffer.write(', type = ${stringify(parameter.type)}'); |
| return 'Parameter($buffer)'; |
| } |
| |
| stringifyTypeVariable(TypeVariableMirror typeVariable) { |
| var buffer = new StringBuffer(); |
| writeDeclarationOn(typeVariable, buffer); |
| buffer.write(', upperBound = ${stringify(typeVariable.upperBound)}'); |
| return 'TypeVariable($buffer)'; |
| } |
| |
| stringifyType(TypeMirror type) { |
| var buffer = new StringBuffer(); |
| writeDeclarationOn(type, buffer); |
| return 'Type($buffer)'; |
| } |
| |
| stringifyClass(ClassMirror cls) { |
| var buffer = new StringBuffer(); |
| writeDeclarationOn(cls, buffer); |
| return 'Class($buffer)'; |
| } |
| |
| stringifyMethod(MethodMirror method) { |
| var buffer = new StringBuffer(); |
| writeDeclarationOn(method, buffer); |
| if (method.isAbstract) buffer.write(', abstract'); |
| if (method.isSynthetic) buffer.write(', synthetic'); |
| if (method.isStatic) buffer.write(', static'); |
| if (method.isGetter) buffer.write(', getter'); |
| if (method.isSetter) buffer.write(', setter'); |
| if (method.isConstructor) buffer.write(', constructor'); |
| return 'Method($buffer)'; |
| } |
| |
| stringify(value) { |
| if (value is Map) return stringifyMap(value); |
| if (value is Iterable) return stringifyIterable(value); |
| if (value is InstanceMirror) return stringifyInstance(value); |
| if (value is ParameterMirror) return stringifyParameter(value); |
| if (value is VariableMirror) return stringifyVariable(value); |
| if (value is MethodMirror) return stringifyMethod(value); |
| if (value is num) return value.toString(); |
| if (value is String) return value; |
| if (value is Symbol) return stringifySymbol(value); |
| if (value is ClassMirror) return stringifyClass(value); |
| if (value is TypeVariableMirror) return stringifyTypeVariable(value); |
| if (value is TypeMirror) return stringifyType(value); |
| if (value == null) return '<null>'; |
| throw 'Unexpected value: $value'; |
| } |
| |
| expect(expected, actual, [String reason]) { |
| Expect.stringEquals(expected, stringify(actual), reason); |
| } |
| |
| compareSymbols(Symbol a, Symbol b) { |
| return MirrorSystem.getName(a).compareTo(MirrorSystem.getName(b)); |
| } |
| |
| simpleNames(Iterable<Mirror> i) => i.map((e) => e.simpleName); |
| |
| sort(Iterable<Symbol> symbols) => symbols.toList()..sort(compareSymbols); |