1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #include "allocation.h"
36 #include "type-info.h"
44 class AstTyper: public AstVisitor {
46 static void Run(CompilationInfo* info);
48 void* operator new(size_t size, Zone* zone) {
49 return zone->New(static_cast<int>(size));
51 void operator delete(void* pointer, Zone* zone) { }
52 void operator delete(void* pointer) { }
54 DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
57 explicit AstTyper(CompilationInfo* info);
59 CompilationInfo* info_;
60 TypeFeedbackOracle oracle_;
62 TypeFeedbackOracle* oracle() { return &oracle_; }
63 Zone* zone() const { return info_->zone(); }
65 void MergeLowerType(Expression* e, Handle<Type> t) {
66 e->set_lower_type(handle(Type::Union(e->lower_type(), t), isolate_));
68 void MergeUpperType(Expression* e, Handle<Type> t) {
69 e->set_upper_type(handle(Type::Intersect(e->upper_type(), t), isolate_));
71 void MergeLowerType(Expression* e, Type* t) {
72 MergeLowerType(e, handle(t, isolate_));
74 void MergeUpperType(Expression* e, Type* t) {
75 MergeUpperType(e, handle(t, isolate_));
78 void VisitDeclarations(ZoneList<Declaration*>* declarations);
79 void VisitStatements(ZoneList<Statement*>* statements);
81 #define DECLARE_VISIT(type) virtual void Visit##type(type* node);
82 AST_NODE_LIST(DECLARE_VISIT)
85 DISALLOW_COPY_AND_ASSIGN(AstTyper);
88 } } // namespace v8::internal
90 #endif // V8_TYPING_H_