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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 #ifndef V8_AST_AST_H_ | 5 #ifndef V8_AST_AST_H_ |
6 #define V8_AST_AST_H_ | 6 #define V8_AST_AST_H_ |
7 | 7 |
8 #include "src/assembler.h" | 8 #include "src/assembler.h" |
9 #include "src/ast/ast-value-factory.h" | 9 #include "src/ast/ast-value-factory.h" |
10 #include "src/ast/modules.h" | 10 #include "src/ast/modules.h" |
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385 DCHECK(!BailoutId(base_id_).IsNone()); | 385 DCHECK(!BailoutId(base_id_).IsNone()); |
386 return base_id_; | 386 return base_id_; |
387 } | 387 } |
388 | 388 |
389 private: | 389 private: |
390 int local_id(int n) const { return base_id() + parent_num_ids() + n; } | 390 int local_id(int n) const { return base_id() + parent_num_ids() + n; } |
391 | 391 |
392 int base_id_; | 392 int base_id_; |
393 Bounds bounds_; | 393 Bounds bounds_; |
394 class ToBooleanTypesField : public BitField16<uint16_t, 0, 9> {}; | 394 class ToBooleanTypesField : public BitField16<uint16_t, 0, 9> {}; |
| 395 |
| 396 protected: |
| 397 static const int kExpressionBitFieldNext = ToBooleanTypesField::kNext; |
395 uint16_t bit_field_; | 398 uint16_t bit_field_; |
396 // Ends with 16-bit field; deriving classes in turn begin with | 399 // Ends with 16-bit field; deriving classes in turn begin with |
397 // 16-bit fields for optimum packing efficiency. | 400 // 16-bit fields for optimum packing efficiency. |
398 }; | 401 }; |
399 | 402 |
400 | 403 |
401 class BreakableStatement : public Statement { | 404 class BreakableStatement : public Statement { |
402 public: | 405 public: |
403 enum BreakableType { | 406 enum BreakableType { |
404 TARGET_FOR_ANONYMOUS, | 407 TARGET_FOR_ANONYMOUS, |
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2592 Handle<String> name() const { return raw_name_->string(); } | 2595 Handle<String> name() const { return raw_name_->string(); } |
2593 const AstString* raw_name() const { return raw_name_; } | 2596 const AstString* raw_name() const { return raw_name_; } |
2594 void set_raw_name(const AstString* name) { raw_name_ = name; } | 2597 void set_raw_name(const AstString* name) { raw_name_ = name; } |
2595 Scope* scope() const { return scope_; } | 2598 Scope* scope() const { return scope_; } |
2596 ZoneList<Statement*>* body() const { return body_; } | 2599 ZoneList<Statement*>* body() const { return body_; } |
2597 void set_function_token_position(int pos) { function_token_position_ = pos; } | 2600 void set_function_token_position(int pos) { function_token_position_ = pos; } |
2598 int function_token_position() const { return function_token_position_; } | 2601 int function_token_position() const { return function_token_position_; } |
2599 int start_position() const; | 2602 int start_position() const; |
2600 int end_position() const; | 2603 int end_position() const; |
2601 int SourceSize() const { return end_position() - start_position(); } | 2604 int SourceSize() const { return end_position() - start_position(); } |
2602 bool is_declaration() const { return IsDeclaration::decode(bitfield_); } | 2605 bool is_declaration() const { |
| 2606 return IsDeclaration::decode(Expression::bit_field_); |
| 2607 } |
2603 bool is_named_expression() const { | 2608 bool is_named_expression() const { |
2604 return IsNamedExpression::decode(bitfield_); | 2609 return IsNamedExpression::decode(bitfield_); |
2605 } | 2610 } |
2606 bool is_anonymous_expression() const { | 2611 bool is_anonymous_expression() const { |
2607 return IsAnonymousExpression::decode(bitfield_); | 2612 return IsAnonymousExpression::decode(bitfield_); |
2608 } | 2613 } |
2609 LanguageMode language_mode() const; | 2614 LanguageMode language_mode() const; |
2610 | 2615 |
2611 static bool NeedsHomeObject(Expression* expr); | 2616 static bool NeedsHomeObject(Expression* expr); |
2612 | 2617 |
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2719 body_(body), | 2724 body_(body), |
2720 raw_inferred_name_(ast_value_factory->empty_string()), | 2725 raw_inferred_name_(ast_value_factory->empty_string()), |
2721 ast_properties_(zone), | 2726 ast_properties_(zone), |
2722 dont_optimize_reason_(kNoReason), | 2727 dont_optimize_reason_(kNoReason), |
2723 materialized_literal_count_(materialized_literal_count), | 2728 materialized_literal_count_(materialized_literal_count), |
2724 expected_property_count_(expected_property_count), | 2729 expected_property_count_(expected_property_count), |
2725 parameter_count_(parameter_count), | 2730 parameter_count_(parameter_count), |
2726 function_token_position_(RelocInfo::kNoPosition), | 2731 function_token_position_(RelocInfo::kNoPosition), |
2727 yield_count_(0) { | 2732 yield_count_(0) { |
2728 bitfield_ = | 2733 bitfield_ = |
2729 IsDeclaration::encode(function_type == kDeclaration) | | |
2730 IsNamedExpression::encode(function_type == kNamedExpression) | | 2734 IsNamedExpression::encode(function_type == kNamedExpression) | |
2731 IsAnonymousExpression::encode(function_type == kAnonymousExpression) | | 2735 IsAnonymousExpression::encode(function_type == kAnonymousExpression) | |
2732 Pretenure::encode(false) | | 2736 Pretenure::encode(false) | |
2733 HasDuplicateParameters::encode(has_duplicate_parameters == | 2737 HasDuplicateParameters::encode(has_duplicate_parameters == |
2734 kHasDuplicateParameters) | | 2738 kHasDuplicateParameters) | |
2735 IsFunction::encode(is_function) | | 2739 IsFunction::encode(is_function) | |
2736 ShouldEagerCompile::encode(eager_compile_hint == kShouldEagerCompile) | | 2740 ShouldEagerCompile::encode(eager_compile_hint == kShouldEagerCompile) | |
2737 FunctionKindBits::encode(kind) | ShouldBeUsedOnceHint::encode(false); | 2741 FunctionKindBits::encode(kind) | ShouldBeUsedOnceHint::encode(false); |
2738 DCHECK(IsValidFunctionKind(kind)); | 2742 DCHECK(IsValidFunctionKind(kind)); |
2739 } | 2743 } |
2740 | 2744 |
2741 private: | 2745 private: |
2742 class IsDeclaration : public BitField16<bool, 0, 1> {}; | 2746 STATIC_ASSERT((Expression::kExpressionBitFieldNext + 1) < 16); |
2743 class IsNamedExpression : public BitField16<bool, 1, 1> {}; | 2747 class IsDeclaration |
2744 class IsAnonymousExpression : public BitField16<bool, 2, 1> {}; | 2748 : public BitField16<bool, Expression::kExpressionBitFieldNext, 1> {}; |
2745 class Pretenure : public BitField16<bool, 3, 1> {}; | 2749 class IsNamedExpression : public BitField16<bool, 0, 1> {}; |
2746 class HasDuplicateParameters : public BitField16<bool, 4, 1> {}; | 2750 class IsAnonymousExpression : public BitField16<bool, 1, 1> {}; |
2747 class IsFunction : public BitField16<bool, 5, 1> {}; | 2751 class Pretenure : public BitField16<bool, 2, 1> {}; |
2748 class ShouldEagerCompile : public BitField16<bool, 6, 1> {}; | 2752 class HasDuplicateParameters : public BitField16<bool, 3, 1> {}; |
2749 class ShouldBeUsedOnceHint : public BitField16<bool, 7, 1> {}; | 2753 class IsFunction : public BitField16<bool, 4, 1> {}; |
2750 class FunctionKindBits : public BitField16<FunctionKind, 8, 8> {}; | 2754 class ShouldEagerCompile : public BitField16<bool, 5, 1> {}; |
| 2755 class ShouldBeUsedOnceHint : public BitField16<bool, 6, 1> {}; |
| 2756 class FunctionKindBits : public BitField16<FunctionKind, 7, 9> {}; |
2751 | 2757 |
2752 // Start with 16-bit field, which should get packed together | 2758 // Start with 16-bit field, which should get packed together |
2753 // with Expression's trailing 16-bit field. | 2759 // with Expression's trailing 16-bit field. |
2754 uint16_t bitfield_; | 2760 uint16_t bitfield_; |
2755 | 2761 |
2756 const AstString* raw_name_; | 2762 const AstString* raw_name_; |
2757 Scope* scope_; | 2763 Scope* scope_; |
2758 ZoneList<Statement*>* body_; | 2764 ZoneList<Statement*>* body_; |
2759 const AstString* raw_inferred_name_; | 2765 const AstString* raw_inferred_name_; |
2760 Handle<String> inferred_name_; | 2766 Handle<String> inferred_name_; |
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3558 : NULL; \ | 3564 : NULL; \ |
3559 } | 3565 } |
3560 AST_NODE_LIST(DECLARE_NODE_FUNCTIONS) | 3566 AST_NODE_LIST(DECLARE_NODE_FUNCTIONS) |
3561 #undef DECLARE_NODE_FUNCTIONS | 3567 #undef DECLARE_NODE_FUNCTIONS |
3562 | 3568 |
3563 | 3569 |
3564 } // namespace internal | 3570 } // namespace internal |
3565 } // namespace v8 | 3571 } // namespace v8 |
3566 | 3572 |
3567 #endif // V8_AST_AST_H_ | 3573 #endif // V8_AST_AST_H_ |
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