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| 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 /** | 5 /** |
| 6 * Generates the code for all used classes in the program. Static fields (even | 6 * Generates the code for all used classes in the program. Static fields (even |
| 7 * in classes) are ignored, since they can be treated as non-class elements. | 7 * in classes) are ignored, since they can be treated as non-class elements. |
| 8 * | 8 * |
| 9 * The code for the containing (used) methods must exist in the [:universe:]. | 9 * The code for the containing (used) methods must exist in the [:universe:]. |
| 10 */ | 10 */ |
| 11 class CodeEmitterTask extends CompilerTask { | 11 class CodeEmitterTask extends CompilerTask { |
| 12 static final String INHERIT_FUNCTION = ''' | 12 static final String INHERIT_FUNCTION = ''' |
| 13 function(child, parent) { | 13 function(child, parent) { |
| 14 if (child.prototype.__proto__) { | 14 if (child.prototype.__proto__) { |
| 15 child.prototype.__proto__ = parent.prototype; | 15 child.prototype.__proto__ = parent.prototype; |
| 16 } else { | 16 } else { |
| 17 function tmp() {}; | 17 function tmp() {}; |
| 18 tmp.prototype = parent.prototype; | 18 tmp.prototype = parent.prototype; |
| 19 child.prototype = new tmp(); | 19 child.prototype = new tmp(); |
| 20 child.prototype.constructor = child; | 20 child.prototype.constructor = child; |
| 21 } | 21 } |
| 22 }'''; | 22 }'''; |
| 23 | 23 |
| 24 bool addedInheritFunction = false; | 24 bool addedInheritFunction = false; |
| 25 final Namer namer; |
| 25 | 26 |
| 26 CodeEmitterTask(Compiler compiler) : super(compiler); | 27 CodeEmitterTask(Compiler compiler) : namer = compiler.namer, super(compiler); |
| 27 String get name() => 'CodeEmitter'; | 28 String get name() => 'CodeEmitter'; |
| 28 | 29 |
| 29 String get inheritsName() => '${compiler.namer.isolate}.\$inherits'; | 30 String get inheritsName() => '${compiler.namer.isolate}.\$inherits'; |
| 30 | 31 |
| 31 void addInheritFunctionIfNecessary(StringBuffer buffer) { | 32 void addInheritFunctionIfNecessary(StringBuffer buffer) { |
| 32 if (addedInheritFunction) return; | 33 if (addedInheritFunction) return; |
| 33 addedInheritFunction = true; | 34 addedInheritFunction = true; |
| 34 buffer.add('$inheritsName = '); | 35 buffer.add('$inheritsName = '); |
| 35 buffer.add(INHERIT_FUNCTION); | 36 buffer.add(INHERIT_FUNCTION); |
| 36 buffer.add(';\n'); | 37 buffer.add(';\n'); |
| 37 } | 38 } |
| 38 | 39 |
| 40 void addInstanceMember(Element member, |
| 41 String prototype, |
| 42 StringBuffer buffer) { |
| 43 assert(member is FunctionElement); |
| 44 assert(!member.isStatic()); |
| 45 String codeBlock = compiler.universe.generatedCode[member]; |
| 46 assert(codeBlock !== null); |
| 47 buffer.add('$prototype.${namer.instanceName(member)} = $codeBlock;\n'); |
| 48 } |
| 49 |
| 39 void generateClass(ClassElement classElement, | 50 void generateClass(ClassElement classElement, |
| 40 StringBuffer buffer, | 51 StringBuffer buffer, |
| 41 Set<ClassElement> seenClasses) { | 52 Set<ClassElement> seenClasses) { |
| 42 Namer namer = compiler.namer; | |
| 43 if (seenClasses.contains(classElement)) return; | 53 if (seenClasses.contains(classElement)) return; |
| 44 seenClasses.add(classElement); | 54 seenClasses.add(classElement); |
| 45 Type supertype = classElement.supertype; | 55 Type supertype = classElement.supertype; |
| 46 ClassElement superClass = (supertype === null ? null : supertype.element); | 56 ClassElement superClass = (supertype === null ? null : supertype.element); |
| 47 if (superClass !== null) { | 57 if (superClass !== null) { |
| 48 generateClass(superClass, buffer, seenClasses); | 58 generateClass(superClass, buffer, seenClasses); |
| 49 } | 59 } |
| 50 | 60 |
| 51 String className = namer.isolatePropertyAccess(classElement); | 61 String className = namer.isolatePropertyAccess(classElement); |
| 52 buffer.add('$className = function() {};\n'); | 62 buffer.add('$className = function() {};\n'); |
| 53 if (superClass !== null) { | 63 if (superClass !== null) { |
| 54 addInheritFunctionIfNecessary(buffer); | 64 addInheritFunctionIfNecessary(buffer); |
| 55 String superName = namer.isolatePropertyAccess(superClass); | 65 String superName = namer.isolatePropertyAccess(superClass); |
| 56 buffer.add('${inheritsName}($className, $superName);\n'); | 66 buffer.add('${inheritsName}($className, $superName);\n'); |
| 57 } | 67 } |
| 58 String prototype = '$className.prototype'; | 68 String prototype = '$className.prototype'; |
| 59 // TODO(floitsch): run through classElement.members() instead of []. | 69 |
| 60 for (Element member in []) { | 70 for (Element member in classElement.members) { |
| 61 if (member.kind !== ElementKind.FUNCTION) continue; | 71 if (!member.isStatic()) addInstanceMember(member, prototype, buffer); |
| 62 assert(member is FunctionElement); | 72 } |
| 63 // TODO(floitsch): if (element.isStatic()) continue; | 73 for (Element member in classElement.backendMembers) { |
| 64 String codeBlock = compiler.universe.generatedCode[member]; | 74 if (!member.isStatic()) addInstanceMember(member, prototype, buffer);
|
| 65 assert(codeBlock !== null); | |
| 66 buffer.add('$prototype.${namer.methodName(member)} = $codeBlock;\n'); | |
| 67 } | 75 } |
| 68 | 76 |
| 69 Element synthesized = classElement.synthesizedConstructor; | 77 Element synthesized = classElement.synthesizedConstructor; |
| 70 if (synthesized !== null) { | 78 if (synthesized !== null) { |
| 71 String codeBlock = compiler.universe.generatedCode[synthesized]; | 79 String codeBlock = compiler.universe.generatedCode[synthesized]; |
| 72 assert(codeBlock !== null); | 80 assert(codeBlock !== null); |
| 73 buffer.add('$prototype.${synthesized.name} = $codeBlock;\n'); | 81 buffer.add('${namer.isolatePropertyAccess(synthesized)} = $codeBlock;\n'); |
| 74 } | 82 } |
| 75 } | 83 } |
| 76 | 84 |
| 77 String compileClasses(StringBuffer buffer) { | 85 String compileClasses(StringBuffer buffer) { |
| 78 Set seenClasses = new Set<ClassElement>(); | 86 Set seenClasses = new Set<ClassElement>(); |
| 79 for (ClassElement element in compiler.universe.instantiatedClasses) { | 87 for (ClassElement element in compiler.universe.instantiatedClasses) { |
| 80 generateClass(element, buffer, seenClasses); | 88 generateClass(element, buffer, seenClasses); |
| 81 } | 89 } |
| 82 return buffer.toString(); | 90 return buffer.toString(); |
| 83 } | 91 } |
| 84 | 92 |
| 85 String assembleProgram() { | 93 String assembleProgram() { |
| 86 measure(() { | 94 measure(() { |
| 87 Namer namer = compiler.namer; | |
| 88 StringBuffer buffer = new StringBuffer(); | 95 StringBuffer buffer = new StringBuffer(); |
| 89 buffer.add('function ${namer.isolate}() {};\n\n'); | 96 buffer.add('function ${namer.isolate}() {};\n\n'); |
| 90 compileClasses(buffer); | 97 compileClasses(buffer); |
| 91 Map<Element, String> generatedCode = compiler.universe.generatedCode; | 98 Map<Element, String> generatedCode = compiler.universe.generatedCode; |
| 92 generatedCode.forEach((Element element, String codeBlock) { | 99 generatedCode.forEach((Element element, String codeBlock) { |
| 93 if (element.isStatic()) { | 100 if (element.isStatic()) { |
| 94 buffer.add('${namer.isolatePropertyAccess(element)} = '); | 101 buffer.add('${namer.isolatePropertyAccess(element)} = '); |
| 95 buffer.add(codeBlock); | 102 buffer.add(codeBlock); |
| 96 buffer.add(';\n\n'); | 103 buffer.add(';\n\n'); |
| 97 } | 104 } |
| 98 }); | 105 }); |
| 99 buffer.add('var ${namer.currentIsolate} = new ${namer.isolate}();\n'); | 106 buffer.add('var ${namer.currentIsolate} = new ${namer.isolate}();\n'); |
| 100 buffer.add('${namer.currentIsolate}.main();\n'); | 107 buffer.add('${namer.currentIsolate}.main();\n'); |
| 101 compiler.assembledCode = buffer.toString(); | 108 compiler.assembledCode = buffer.toString(); |
| 102 }); | 109 }); |
| 103 return compiler.assembledCode; | 110 return compiler.assembledCode; |
| 104 } | 111 } |
| 105 } | 112 } |
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