| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef V8_TYPING_H_ |
| #define V8_TYPING_H_ |
| |
| #include "v8.h" |
| |
| #include "allocation.h" |
| #include "ast.h" |
| #include "compiler.h" |
| #include "type-info.h" |
| #include "types.h" |
| #include "effects.h" |
| #include "zone.h" |
| #include "scopes.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| class AstTyper: public AstVisitor { |
| public: |
| static void Run(CompilationInfo* info); |
| |
| void* operator new(size_t size, Zone* zone) { |
| return zone->New(static_cast<int>(size)); |
| } |
| void operator delete(void* pointer, Zone* zone) { } |
| void operator delete(void* pointer) { } |
| |
| DEFINE_AST_VISITOR_SUBCLASS_MEMBERS(); |
| |
| private: |
| explicit AstTyper(CompilationInfo* info); |
| |
| static const int kNoVar = INT_MIN; |
| typedef v8::internal::Effects<int, kNoVar> Effects; |
| typedef v8::internal::NestedEffects<int, kNoVar> Store; |
| |
| CompilationInfo* info_; |
| TypeFeedbackOracle oracle_; |
| Store store_; |
| |
| TypeFeedbackOracle* oracle() { return &oracle_; } |
| Zone* zone() const { return info_->zone(); } |
| |
| void NarrowType(Expression* e, Bounds b) { |
| e->set_bounds(Bounds::Both(e->bounds(), b, isolate_)); |
| } |
| void NarrowLowerType(Expression* e, Handle<Type> t) { |
| e->set_bounds(Bounds::NarrowLower(e->bounds(), t, isolate_)); |
| } |
| |
| Effects EnterEffects() { |
| store_ = store_.Push(); |
| return store_.Top(); |
| } |
| void ExitEffects() { store_ = store_.Pop(); } |
| |
| int variable_index(Variable* var) { |
| return var->IsStackLocal() ? var->index() : |
| var->IsParameter() ? -var->index() : kNoVar; |
| } |
| |
| void VisitDeclarations(ZoneList<Declaration*>* declarations); |
| void VisitStatements(ZoneList<Statement*>* statements); |
| |
| #define DECLARE_VISIT(type) virtual void Visit##type(type* node); |
| AST_NODE_LIST(DECLARE_VISIT) |
| #undef DECLARE_VISIT |
| |
| DISALLOW_COPY_AND_ASSIGN(AstTyper); |
| }; |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_TYPING_H_ |