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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 js_backend; | 5 part of js_backend; |
6 | 6 |
7 /** | 7 /** |
8 * A function element that represents a closure call. The signature is copied | 8 * A function element that represents a closure call. The signature is copied |
9 * from the given element. | 9 * from the given element. |
10 */ | 10 */ |
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1261 if (compiler.codegenWorld.hasInvokedGetter(member, compiler)) { | 1261 if (compiler.codegenWorld.hasInvokedGetter(member, compiler)) { |
1262 emitDynamicFunctionGetter(member, defineInstanceMember); | 1262 emitDynamicFunctionGetter(member, defineInstanceMember); |
1263 } | 1263 } |
1264 } | 1264 } |
1265 } | 1265 } |
1266 | 1266 |
1267 void emitNoSuchMethodHandlers(DefineMemberFunction defineInstanceMember) { | 1267 void emitNoSuchMethodHandlers(DefineMemberFunction defineInstanceMember) { |
1268 // Do not generate no such method handlers if there is no class. | 1268 // Do not generate no such method handlers if there is no class. |
1269 if (compiler.codegenWorld.instantiatedClasses.isEmpty) return; | 1269 if (compiler.codegenWorld.instantiatedClasses.isEmpty) return; |
1270 | 1270 |
1271 String noSuchMethodName = | 1271 String noSuchMethodName = namer.publicInstanceMethodNameByArity( |
1272 namer.publicInstanceMethodNameByArity(Compiler.NO_SUCH_METHOD, 2); | 1272 Compiler.NO_SUCH_METHOD, Compiler.NO_SUCH_METHOD_ARG_COUNT); |
1273 | 1273 |
1274 // Keep track of the JavaScript names we've already added so we | 1274 // Keep track of the JavaScript names we've already added so we |
1275 // do not introduce duplicates (bad for code size). | 1275 // do not introduce duplicates (bad for code size). |
1276 Set<String> addedJsNames = new Set<String>(); | 1276 Set<String> addedJsNames = new Set<String>(); |
1277 | 1277 |
1278 // Keep track of the noSuchMethod holders for each possible | 1278 // Keep track of the noSuchMethod holders for each possible |
1279 // receiver type. | 1279 // receiver type. |
1280 Map<ClassElement, Set<ClassElement>> noSuchMethodHolders = | 1280 Map<ClassElement, Set<ClassElement>> noSuchMethodHolders = |
1281 new Map<ClassElement, Set<ClassElement>>(); | 1281 new Map<ClassElement, Set<ClassElement>>(); |
1282 Set<ClassElement> noSuchMethodHoldersFor(DartType type) { | 1282 Set<ClassElement> noSuchMethodHoldersFor(DartType type) { |
1283 ClassElement element = type.element; | 1283 ClassElement element = type.element; |
1284 Set<ClassElement> result = noSuchMethodHolders[element]; | 1284 Set<ClassElement> result = noSuchMethodHolders[element]; |
1285 if (result == null) { | 1285 if (result == null) { |
1286 // For now, we check the entire world to see if an object of | 1286 // For now, we check the entire world to see if an object of |
1287 // the given type may have a user-defined noSuchMethod | 1287 // the given type may have a user-defined noSuchMethod |
1288 // implementation. We could do better by only looking at | 1288 // implementation. We could do better by only looking at |
1289 // instantiated (or otherwise needed) classes. | 1289 // instantiated (or otherwise needed) classes. |
1290 result = compiler.world.findNoSuchMethodHolders(type); | 1290 result = compiler.world.findNoSuchMethodHolders(type); |
1291 noSuchMethodHolders[element] = result; | 1291 noSuchMethodHolders[element] = result; |
1292 } | 1292 } |
1293 return result; | 1293 return result; |
1294 } | 1294 } |
1295 | 1295 |
1296 CodeBuffer generateMethod(String methodName, Selector selector) { | 1296 CodeBuffer generateMethod(String methodName, Selector selector) { |
| 1297 // Values match JSInvocationMirror in js-helper library. |
| 1298 const int METHOD = 0; |
| 1299 const int GETTER = 1; |
| 1300 const int SETTER = 2; |
| 1301 int type = METHOD; |
| 1302 if (selector.isGetter()) { |
| 1303 type = GETTER; |
| 1304 } else if (selector.isSetter()) { |
| 1305 type = SETTER; |
| 1306 } |
1297 CodeBuffer args = new CodeBuffer(); | 1307 CodeBuffer args = new CodeBuffer(); |
1298 for (int i = 0; i < selector.argumentCount; i++) { | 1308 for (int i = 0; i < selector.argumentCount; i++) { |
1299 if (i != 0) args.add(', '); | 1309 if (i != 0) args.add(', '); |
1300 args.add('\$$i'); | 1310 args.add('\$$i'); |
1301 } | 1311 } |
| 1312 CodeBuffer argNames = new CodeBuffer(); |
| 1313 List<SourceString> names = selector.getOrderedNamedArguments(); |
| 1314 for (int i = 0; i < names.length; i++) { |
| 1315 if (i != 0) argNames.add(', '); |
| 1316 argNames.add('"'); |
| 1317 argNames.add(names[i].slowToString()); |
| 1318 argNames.add('"'); |
| 1319 } |
| 1320 String internalName = namer.instanceMethodInvocationName( |
| 1321 selector.library, new SourceString(methodName), selector); |
1302 CodeBuffer buffer = new CodeBuffer(); | 1322 CodeBuffer buffer = new CodeBuffer(); |
1303 buffer.add('function($args) {\n'); | 1323 buffer.add('function($args) {\n'); |
1304 buffer.add(' return this.$noSuchMethodName("$methodName", [$args]);\n'); | 1324 buffer.add(' return this.$noSuchMethodName(' |
| 1325 '\$.createInvocationMirror("$methodName", "$internalName",' |
| 1326 ' $type, [$args], [$argNames]));\n'); |
1305 buffer.add(' }'); | 1327 buffer.add(' }'); |
1306 return buffer; | 1328 return buffer; |
1307 } | 1329 } |
1308 | 1330 |
1309 void addNoSuchMethodHandlers(SourceString ignore, Set<Selector> selectors) { | 1331 void addNoSuchMethodHandlers(SourceString ignore, Set<Selector> selectors) { |
1310 // Cache the object class and type. | 1332 // Cache the object class and type. |
1311 ClassElement objectClass = compiler.objectClass; | 1333 ClassElement objectClass = compiler.objectClass; |
1312 DartType objectType = objectClass.computeType(compiler); | 1334 DartType objectType = objectClass.computeType(compiler); |
1313 | 1335 |
1314 for (Selector selector in selectors) { | 1336 for (Selector selector in selectors) { |
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1580 const String HOOKS_API_USAGE = """ | 1602 const String HOOKS_API_USAGE = """ |
1581 // Generated by dart2js, the Dart to JavaScript compiler. | 1603 // Generated by dart2js, the Dart to JavaScript compiler. |
1582 // The code supports the following hooks: | 1604 // The code supports the following hooks: |
1583 // dartPrint(message) - if this function is defined it is called | 1605 // dartPrint(message) - if this function is defined it is called |
1584 // instead of the Dart [print] method. | 1606 // instead of the Dart [print] method. |
1585 // dartMainRunner(main) - if this function is defined, the Dart [main] | 1607 // dartMainRunner(main) - if this function is defined, the Dart [main] |
1586 // method will not be invoked directly. | 1608 // method will not be invoked directly. |
1587 // Instead, a closure that will invoke [main] is | 1609 // Instead, a closure that will invoke [main] is |
1588 // passed to [dartMainRunner]. | 1610 // passed to [dartMainRunner]. |
1589 """; | 1611 """; |
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