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Side by Side Diff: dart/sdk/lib/_internal/compiler/implementation/js_emitter/code_emitter_task.dart

Issue 302703002: Version 1.4.2 (Closed) Base URL: http://dart.googlecode.com/svn/branches/1.4/
Patch Set: Created 6 years, 6 months ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, 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 part of dart2js.js_emitter; 5 part of dart2js.js_emitter;
6 6
7 /** 7 /**
8 * Generates the code for all used classes in the program. Static fields (even 8 * Generates the code for all used classes in the program. Static fields (even
9 * in classes) are ignored, since they can be treated as non-class elements. 9 * in classes) are ignored, since they can be treated as non-class elements.
10 * 10 *
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128 => r'$finishClasses'; 128 => r'$finishClasses';
129 String get finishClassesName 129 String get finishClassesName
130 => '${namer.isolateName}.$finishClassesProperty'; 130 => '${namer.isolateName}.$finishClassesProperty';
131 String get finishIsolateConstructorName 131 String get finishIsolateConstructorName
132 => '${namer.isolateName}.\$finishIsolateConstructor'; 132 => '${namer.isolateName}.\$finishIsolateConstructor';
133 String get isolatePropertiesName 133 String get isolatePropertiesName
134 => '${namer.isolateName}.${namer.isolatePropertiesName}'; 134 => '${namer.isolateName}.${namer.isolatePropertiesName}';
135 String get lazyInitializerName 135 String get lazyInitializerName
136 => '${namer.isolateName}.\$lazy'; 136 => '${namer.isolateName}.\$lazy';
137 String get initName => 'init'; 137 String get initName => 'init';
138 String get makeConstListProperty
139 => namer.getMappedInstanceName('makeConstantList');
140 138
141 jsAst.FunctionDeclaration get generateAccessorFunction { 139 jsAst.FunctionDeclaration get generateAccessorFunction {
142 const RANGE1_SIZE = RANGE1_LAST - RANGE1_FIRST + 1; 140 const RANGE1_SIZE = RANGE1_LAST - RANGE1_FIRST + 1;
143 const RANGE2_SIZE = RANGE2_LAST - RANGE2_FIRST + 1; 141 const RANGE2_SIZE = RANGE2_LAST - RANGE2_FIRST + 1;
144 const RANGE1_ADJUST = - (FIRST_FIELD_CODE - RANGE1_FIRST); 142 const RANGE1_ADJUST = - (FIRST_FIELD_CODE - RANGE1_FIRST);
145 const RANGE2_ADJUST = - (FIRST_FIELD_CODE + RANGE1_SIZE - RANGE2_FIRST); 143 const RANGE2_ADJUST = - (FIRST_FIELD_CODE + RANGE1_SIZE - RANGE2_FIRST);
146 const RANGE3_ADJUST = 144 const RANGE3_ADJUST =
147 - (FIRST_FIELD_CODE + RANGE1_SIZE + RANGE2_SIZE - RANGE3_FIRST); 145 - (FIRST_FIELD_CODE + RANGE1_SIZE + RANGE2_SIZE - RANGE3_FIRST);
148 146
149 String receiverParamName = compiler.enableMinification ? "r" : "receiver"; 147 String receiverParamName = compiler.enableMinification ? "r" : "receiver";
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533 function ForceEfficientMap() {} 531 function ForceEfficientMap() {}
534 ForceEfficientMap.prototype = this; 532 ForceEfficientMap.prototype = this;
535 new ForceEfficientMap(); 533 new ForceEfficientMap();
536 } 534 }
537 Isolate.prototype = oldIsolate.prototype; 535 Isolate.prototype = oldIsolate.prototype;
538 Isolate.prototype.constructor = Isolate; 536 Isolate.prototype.constructor = Isolate;
539 Isolate.${namer.isolatePropertiesName} = isolateProperties; 537 Isolate.${namer.isolatePropertiesName} = isolateProperties;
540 if (#) 538 if (#)
541 Isolate.$finishClassesProperty = oldIsolate.$finishClassesProperty; 539 Isolate.$finishClassesProperty = oldIsolate.$finishClassesProperty;
542 if (#) 540 if (#)
543 Isolate.$makeConstListProperty = oldIsolate.$makeConstListProperty; 541 Isolate.makeConstantList = oldIsolate.makeConstantList;
544 return Isolate; 542 return Isolate;
545 }''', 543 }''',
546 [ needsDefineClass, hasMakeConstantList ]); 544 [ needsDefineClass, hasMakeConstantList ]);
547 } 545 }
548 546
549 jsAst.Fun get lazyInitializerFunction { 547 jsAst.Fun get lazyInitializerFunction {
550 String isolate = namer.currentIsolate; 548 String isolate = namer.currentIsolate;
551 jsAst.Expression cyclicThrow = 549 jsAst.Expression cyclicThrow =
552 namer.elementAccess(backend.getCyclicThrowHelper()); 550 namer.elementAccess(backend.getCyclicThrowHelper());
553 551
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951 int r = namer.constantLongName(a).compareTo(namer.constantLongName(b)); 949 int r = namer.constantLongName(a).compareTo(namer.constantLongName(b));
952 if (r != 0) return r; 950 if (r != 0) return r;
953 // Resolve collisions in the long name by using the constant name (i.e. JS 951 // Resolve collisions in the long name by using the constant name (i.e. JS
954 // name) which is unique. 952 // name) which is unique.
955 return namer.constantName(a).compareTo(namer.constantName(b)); 953 return namer.constantName(a).compareTo(namer.constantName(b));
956 } 954 }
957 955
958 void emitMakeConstantListIfNotEmitted(CodeBuffer buffer) { 956 void emitMakeConstantListIfNotEmitted(CodeBuffer buffer) {
959 if (hasMakeConstantList) return; 957 if (hasMakeConstantList) return;
960 hasMakeConstantList = true; 958 hasMakeConstantList = true;
961 jsAst.Statement value = new jsAst.ExpressionStatement(new jsAst.Assignment( 959 buffer
962 new jsAst.PropertyAccess.field( 960 ..write(namer.isolateName)
963 new jsAst.VariableUse(namer.isolateName), 961 ..write('''.makeConstantList = function(list) {
964 makeConstListProperty), 962 list.immutable\$list = $initName;
965 js('''function(list) { 963 list.fixed\$length = $initName;
966 list.immutable\$list = $initName; 964 return list;
967 list.fixed\$length = $initName; 965 };
968 return list; 966 ''');
969 }''')));
970 buffer.write(jsAst.prettyPrint(value, compiler));
971 } 967 }
972 968
973 /// Returns the code equivalent to: 969 /// Returns the code equivalent to:
974 /// `function(args) { $.startRootIsolate(X.main$closure(), args); }` 970 /// `function(args) { $.startRootIsolate(X.main$closure(), args); }`
975 String buildIsolateSetupClosure(CodeBuffer buffer, 971 String buildIsolateSetupClosure(CodeBuffer buffer,
976 Element appMain, 972 Element appMain,
977 Element isolateMain) { 973 Element isolateMain) {
978 jsAst.Expression mainAccess = namer.isolateStaticClosureAccess(appMain); 974 jsAst.Expression mainAccess = namer.isolateStaticClosureAccess(appMain);
979 // Since we pass the closurized version of the main method to 975 // Since we pass the closurized version of the main method to
980 // the isolate method, we must make sure that it exists. 976 // the isolate method, we must make sure that it exists.
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1743 String sourceMap = sourceMapBuilder.build(); 1739 String sourceMap = sourceMapBuilder.build();
1744 compiler.outputProvider(name, 'js.map') 1740 compiler.outputProvider(name, 'js.map')
1745 ..add(sourceMap) 1741 ..add(sourceMap)
1746 ..close(); 1742 ..close();
1747 } 1743 }
1748 1744
1749 void registerReadTypeVariable(TypeVariableElement element) { 1745 void registerReadTypeVariable(TypeVariableElement element) {
1750 readTypeVariables.add(element); 1746 readTypeVariables.add(element);
1751 } 1747 }
1752 } 1748 }
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