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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 class Interceptors { | 5 class Interceptors { |
| 6 Compiler compiler; | 6 Compiler compiler; |
| 7 Interceptors(Compiler this.compiler); | 7 Interceptors(Compiler this.compiler); |
| 8 | 8 |
| 9 SourceString mapOperatorToMethodName(Operator op) { | 9 SourceString mapOperatorToMethodName(Operator op) { |
| 10 String name = op.source.stringValue; | 10 String name = op.source.stringValue; |
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| 1283 | 1283 |
| 1284 visitBreakStatement(BreakStatement node) { | 1284 visitBreakStatement(BreakStatement node) { |
| 1285 compiler.unimplemented('SsaBuilder.visitBreakStatement', node: node); | 1285 compiler.unimplemented('SsaBuilder.visitBreakStatement', node: node); |
| 1286 } | 1286 } |
| 1287 | 1287 |
| 1288 visitContinueStatement(ContinueStatement node) { | 1288 visitContinueStatement(ContinueStatement node) { |
| 1289 compiler.unimplemented('SsaBuilder.visitContinueStatement', node: node); | 1289 compiler.unimplemented('SsaBuilder.visitContinueStatement', node: node); |
| 1290 } | 1290 } |
| 1291 | 1291 |
| 1292 visitForInStatement(ForInStatement node) { | 1292 visitForInStatement(ForInStatement node) { |
| 1293 compiler.unimplemented('SsaBuilder.visitForInStatement', node: node); | 1293 // Generate a structure equivalent to: |
| 1294 // Iterator<E> $iter = <iterable>.iterator() |
| 1295 // while ($iter.hasNext()) { |
| 1296 // E <declaredIdentifier> = $iter.next(); |
| 1297 // <body> |
| 1298 // } |
| 1299 SourceString iteratorName = const SourceString("iterator"); |
| 1300 |
| 1301 Element interceptor = interceptors.getStaticInterceptor(iteratorName, 0); |
| 1302 assert(interceptor != null); |
| 1303 HStatic target = new HStatic(interceptor); |
| 1304 add(target); |
| 1305 visit(node.expression); |
| 1306 List<HInstruction> inputs = <HInstruction>[target, pop()]; |
| 1307 HInstruction iterator = new HInvokeInterceptor("iterator", false, inputs); |
| 1308 add(iterator); |
| 1309 |
| 1310 Map initializerDefinitions = startLoop(); |
| 1311 HBasicBlock conditionBlock = current; |
| 1312 |
| 1313 // The condition. |
| 1314 String jsHasNextName = |
| 1315 compiler.namer.instanceName(new SourceString("hasNext")); |
| 1316 push(new HInvokeDynamicMethod(jsHasNextName, [iterator])); |
| 1317 HBasicBlock conditionExitBlock = close(new HLoopBranch(popBoolified())); |
| 1318 |
| 1319 Map conditionDefinitions = |
| 1320 new Map<Element, HInstruction>.from(definitions); |
| 1321 |
| 1322 // The body. |
| 1323 HBasicBlock bodyBlock = addNewBlock(); |
| 1324 conditionExitBlock.addSuccessor(bodyBlock); |
| 1325 open(bodyBlock); |
| 1326 |
| 1327 VariableDefinitions definition = node.declaredIdentifier; |
| 1328 Identifier identifier = definition.definitions.nodes.head; |
| 1329 Element variable = elements[identifier]; |
| 1330 String jsNextName = |
| 1331 compiler.namer.instanceName(new SourceString("next")); |
| 1332 push(new HInvokeDynamicMethod(jsNextName, [iterator])); |
| 1333 definitions[variable] = pop(); |
| 1334 |
| 1335 visit(node.body); |
| 1336 if (isAborted()) { |
| 1337 compiler.unimplemented("SsaBuilder for loop with aborting body"); |
| 1338 } |
| 1339 bodyBlock = close(new HGoto()); |
| 1340 |
| 1341 // Update. |
| 1342 // We create an update block, even when we are in a while loop. There the |
| 1343 // update block is the jump-target for continue statements. We could avoid |
| 1344 // the creation if there is no continue, but for now we always create it. |
| 1345 HBasicBlock updateBlock = addNewBlock(); |
| 1346 bodyBlock.addSuccessor(updateBlock); |
| 1347 open(updateBlock); |
| 1348 updateBlock = close(new HGoto()); |
| 1349 // The back-edge completing the cycle. |
| 1350 updateBlock.addSuccessor(conditionBlock); |
| 1351 conditionBlock.postProcessLoopHeader(); |
| 1352 |
| 1353 endLoop(conditionBlock, conditionExitBlock, false, conditionDefinitions); |
| 1294 } | 1354 } |
| 1295 | 1355 |
| 1296 visitLabelledStatement(LabelledStatement node) { | 1356 visitLabelledStatement(LabelledStatement node) { |
| 1297 compiler.unimplemented('SsaBuilder.visitLabelledStatement', node: node); | 1357 compiler.unimplemented('SsaBuilder.visitLabelledStatement', node: node); |
| 1298 } | 1358 } |
| 1299 | 1359 |
| 1300 visitLiteralMap(LiteralMap node) { | 1360 visitLiteralMap(LiteralMap node) { |
| 1301 compiler.unimplemented('SsaBuilder.visitLiteralMap', node: node); | 1361 compiler.unimplemented('SsaBuilder.visitLiteralMap', node: node); |
| 1302 } | 1362 } |
| 1303 | 1363 |
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| 1322 } | 1382 } |
| 1323 | 1383 |
| 1324 visitCatchBlock(CatchBlock node) { | 1384 visitCatchBlock(CatchBlock node) { |
| 1325 compiler.unimplemented('SsaBuilder.visitCatchBlock', node: node); | 1385 compiler.unimplemented('SsaBuilder.visitCatchBlock', node: node); |
| 1326 } | 1386 } |
| 1327 | 1387 |
| 1328 visitTypedef(Typedef node) { | 1388 visitTypedef(Typedef node) { |
| 1329 compiler.unimplemented('SsaBuilder.visitTypedef', node: node); | 1389 compiler.unimplemented('SsaBuilder.visitTypedef', node: node); |
| 1330 } | 1390 } |
| 1331 } | 1391 } |
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Chromium Code Reviews
Issue 9148021:
Implement for-in. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart