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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
8 | 8 |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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1207 } | 1207 } |
1208 | 1208 |
1209 | 1209 |
1210 void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) { | 1210 void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) { |
1211 Comment cmnt(masm_, "[ ForOfStatement"); | 1211 Comment cmnt(masm_, "[ ForOfStatement"); |
1212 SetStatementPosition(stmt); | 1212 SetStatementPosition(stmt); |
1213 | 1213 |
1214 Iteration loop_statement(this, stmt); | 1214 Iteration loop_statement(this, stmt); |
1215 increment_loop_depth(); | 1215 increment_loop_depth(); |
1216 | 1216 |
1217 // var iterator = iterable[@@iterator]() | 1217 // var iterable = subject |
1218 VisitForAccumulatorValue(stmt->assign_iterator()); | 1218 VisitForAccumulatorValue(stmt->assign_iterable()); |
1219 | 1219 |
1220 // As with for-in, skip the loop if the iterator is null or undefined. | 1220 // As with for-in, skip the loop if the iterator is null or undefined. |
1221 __ CompareRoot(eax, Heap::kUndefinedValueRootIndex); | 1221 __ CompareRoot(eax, Heap::kUndefinedValueRootIndex); |
1222 __ j(equal, loop_statement.break_label()); | 1222 __ j(equal, loop_statement.break_label()); |
1223 __ CompareRoot(eax, Heap::kNullValueRootIndex); | 1223 __ CompareRoot(eax, Heap::kNullValueRootIndex); |
1224 __ j(equal, loop_statement.break_label()); | 1224 __ j(equal, loop_statement.break_label()); |
1225 | 1225 |
1226 // Convert the iterator to a JS object. | 1226 // var iterator = iterable[Symbol.iterator](); |
1227 Label convert, done_convert; | 1227 VisitForEffect(stmt->assign_iterator()); |
1228 __ JumpIfSmi(eax, &convert); | |
1229 __ CmpObjectType(eax, FIRST_SPEC_OBJECT_TYPE, ecx); | |
1230 __ j(above_equal, &done_convert); | |
1231 __ bind(&convert); | |
1232 __ push(eax); | |
1233 __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); | |
1234 __ bind(&done_convert); | |
1235 | 1228 |
1236 // Loop entry. | 1229 // Loop entry. |
1237 __ bind(loop_statement.continue_label()); | 1230 __ bind(loop_statement.continue_label()); |
1238 | 1231 |
1239 // result = iterator.next() | 1232 // result = iterator.next() |
1240 VisitForEffect(stmt->next_result()); | 1233 VisitForEffect(stmt->next_result()); |
1241 | 1234 |
1242 // if (result.done) break; | 1235 // if (result.done) break; |
1243 Label result_not_done; | 1236 Label result_not_done; |
1244 VisitForControl(stmt->result_done(), | 1237 VisitForControl(stmt->result_done(), |
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4803 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), | 4796 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), |
4804 Assembler::target_address_at(call_target_address, | 4797 Assembler::target_address_at(call_target_address, |
4805 unoptimized_code)); | 4798 unoptimized_code)); |
4806 return OSR_AFTER_STACK_CHECK; | 4799 return OSR_AFTER_STACK_CHECK; |
4807 } | 4800 } |
4808 | 4801 |
4809 | 4802 |
4810 } } // namespace v8::internal | 4803 } } // namespace v8::internal |
4811 | 4804 |
4812 #endif // V8_TARGET_ARCH_IA32 | 4805 #endif // V8_TARGET_ARCH_IA32 |
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