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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/parser.h" | 5 #include "src/parser.h" |
6 | 6 |
7 #include "src/api.h" | 7 #include "src/api.h" |
8 #include "src/ast.h" | 8 #include "src/ast.h" |
9 #include "src/ast-literal-reindexer.h" | 9 #include "src/ast-literal-reindexer.h" |
10 #include "src/bailout-reason.h" | 10 #include "src/bailout-reason.h" |
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3596 | 3596 |
3597 inner_scope->set_end_position(scanner()->location().end_pos); | 3597 inner_scope->set_end_position(scanner()->location().end_pos); |
3598 inner_block->set_scope(inner_scope); | 3598 inner_block->set_scope(inner_scope); |
3599 scope_ = for_scope; | 3599 scope_ = for_scope; |
3600 | 3600 |
3601 outer_loop->Initialize(NULL, NULL, NULL, inner_block); | 3601 outer_loop->Initialize(NULL, NULL, NULL, inner_block); |
3602 return outer_block; | 3602 return outer_block; |
3603 } | 3603 } |
3604 | 3604 |
3605 | 3605 |
| 3606 Expression* Parser::DesugarDestructuringAssignmentInternal(Expression* expr, |
| 3607 Variable** result) { |
| 3608 Assignment* assign = expr->AsAssignment(); |
| 3609 Expression* value = assign->value(); |
| 3610 Expression* target = assign->target(); |
| 3611 if (value->IsAssignment()) { |
| 3612 value = DesugarDestructuringAssignmentInternal(value, result); |
| 3613 } |
| 3614 if (target->IsObjectLiteral() || target->IsArrayLiteral()) { |
| 3615 Block* block = factory()->NewBlock(nullptr, 8, false, expr->position()); |
| 3616 bool ok = true; |
| 3617 *result = PatternRewriter::RewriteDestructuringAssignment( |
| 3618 this, block, target, value, *result, &ok); |
| 3619 DCHECK_EQ(ok, true); |
| 3620 DCHECK_NOT_NULL(*result); |
| 3621 return factory()->NewDoExpression(block, *result, expr->position()); |
| 3622 } |
| 3623 |
| 3624 return expr; |
| 3625 } |
| 3626 |
| 3627 |
3606 Expression* Parser::DesugarDestructuringAssignment(Expression* expr) { | 3628 Expression* Parser::DesugarDestructuringAssignment(Expression* expr) { |
3607 // TODO(caitp): implement the desugaring | |
3608 DCHECK(expr->IsAssignment()); | 3629 DCHECK(expr->IsAssignment()); |
3609 Assignment* assign = expr->AsAssignment(); | 3630 Variable* result = nullptr; |
3610 while (assign->value()->IsAssignment()) { | 3631 |
3611 assign = assign->value()->AsAssignment(); | 3632 return DesugarDestructuringAssignmentInternal(expr, &result); |
3612 } | |
3613 return assign->value(); | |
3614 } | 3633 } |
3615 | 3634 |
3616 | 3635 |
3617 Statement* Parser::ParseForStatement(ZoneList<const AstRawString*>* labels, | 3636 Statement* Parser::ParseForStatement(ZoneList<const AstRawString*>* labels, |
3618 bool* ok) { | 3637 bool* ok) { |
3619 // ForStatement :: | 3638 // ForStatement :: |
3620 // 'for' '(' Expression? ';' Expression? ';' Expression? ')' Statement | 3639 // 'for' '(' Expression? ';' Expression? ';' Expression? ')' Statement |
3621 | 3640 |
3622 int stmt_pos = peek_position(); | 3641 int stmt_pos = peek_position(); |
3623 bool is_const = false; | 3642 bool is_const = false; |
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6398 | 6417 |
6399 Expression* Parser::SpreadCallNew(Expression* function, | 6418 Expression* Parser::SpreadCallNew(Expression* function, |
6400 ZoneList<v8::internal::Expression*>* args, | 6419 ZoneList<v8::internal::Expression*>* args, |
6401 int pos) { | 6420 int pos) { |
6402 args->InsertAt(0, function, zone()); | 6421 args->InsertAt(0, function, zone()); |
6403 | 6422 |
6404 return factory()->NewCallRuntime(Context::REFLECT_CONSTRUCT_INDEX, args, pos); | 6423 return factory()->NewCallRuntime(Context::REFLECT_CONSTRUCT_INDEX, args, pos); |
6405 } | 6424 } |
6406 } // namespace internal | 6425 } // namespace internal |
6407 } // namespace v8 | 6426 } // namespace v8 |
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