1// Copyright 2016 the V8 project authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// A container to associate type bounds with AST Expression nodes. 6 7#ifndef V8_AST_AST_TYPE_BOUNDS_H_ 8#define V8_AST_AST_TYPE_BOUNDS_H_ 9 10#include "src/ast/ast-types.h" 11#include "src/zone/zone-containers.h" 12 13namespace v8 { 14namespace internal { 15 16class Expression; 17 18class AstTypeBounds { 19 public: 20 explicit AstTypeBounds(Zone* zone) : bounds_map_(zone) {} 21 ~AstTypeBounds() {} 22 23 AstBounds get(Expression* expression) const { 24 ZoneMap<Expression*, AstBounds>::const_iterator i = 25 bounds_map_.find(expression); 26 return (i != bounds_map_.end()) ? i->second : AstBounds::Unbounded(); 27 } 28 29 void set(Expression* expression, AstBounds bounds) { 30 bounds_map_[expression] = bounds; 31 } 32 33 private: 34 ZoneMap<Expression*, AstBounds> bounds_map_; 35}; 36 37} // namespace internal 38} // namespace v8 39 40#endif // V8_AST_AST_TYPE_BOUNDS_H_ 41