src/prettyprinter.h
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00001 // Copyright 2006-2008 the V8 project authors. All rights reserved. 00002 // Redistribution and use in source and binary forms, with or without 00003 // modification, are permitted provided that the following conditions are 00004 // met: 00005 // 00006 // * Redistributions of source code must retain the above copyright 00007 // notice, this list of conditions and the following disclaimer. 00008 // * Redistributions in binary form must reproduce the above 00009 // copyright notice, this list of conditions and the following 00010 // disclaimer in the documentation and/or other materials provided 00011 // with the distribution. 00012 // * Neither the name of Google Inc. nor the names of its 00013 // contributors may be used to endorse or promote products derived 00014 // from this software without specific prior written permission. 00015 // 00016 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00017 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00018 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00019 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00020 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00021 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00022 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00023 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00024 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00026 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 00028 #ifndef V8_PRETTYPRINTER_H_ 00029 #define V8_PRETTYPRINTER_H_ 00030 00031 #include "ast.h" 00032 00033 namespace v8 { namespace internal { 00034 00035 #ifdef DEBUG 00036 00037 class PrettyPrinter: public Visitor { 00038 public: 00039 PrettyPrinter(); 00040 virtual ~PrettyPrinter(); 00041 00042 // The following routines print a node into a string. 00043 // The result string is alive as long as the PrettyPrinter is alive. 00044 const char* Print(Node* node); 00045 const char* PrintExpression(FunctionLiteral* program); 00046 const char* PrintProgram(FunctionLiteral* program); 00047 00048 // Print a node to stdout. 00049 static void PrintOut(Node* node); 00050 00051 // Individual nodes 00052 #define DEF_VISIT(type) \ 00053 virtual void Visit##type(type* node); 00054 NODE_LIST(DEF_VISIT) 00055 #undef DEF_VISIT 00056 00057 private: 00058 char* output_; // output string buffer 00059 int size_; // output_ size 00060 int pos_; // current printing position 00061 00062 protected: 00063 void Init(); 00064 void Print(const char* format, ...); 00065 const char* Output() const { return output_; } 00066 00067 virtual void PrintStatements(ZoneList<Statement*>* statements); 00068 void PrintLabels(ZoneStringList* labels); 00069 virtual void PrintArguments(ZoneList<Expression*>* arguments); 00070 void PrintLiteral(Handle<Object> value, bool quote); 00071 void PrintParameters(Scope* scope); 00072 void PrintDeclarations(ZoneList<Declaration*>* declarations); 00073 void PrintFunctionLiteral(FunctionLiteral* function); 00074 void PrintCaseClause(CaseClause* clause); 00075 }; 00076 00077 00078 // Prints the AST structure 00079 class AstPrinter: public PrettyPrinter { 00080 public: 00081 AstPrinter(); 00082 virtual ~AstPrinter(); 00083 00084 const char* PrintProgram(FunctionLiteral* program); 00085 00086 // Individual nodes 00087 #define DEF_VISIT(type) \ 00088 virtual void Visit##type(type* node); 00089 NODE_LIST(DEF_VISIT) 00090 #undef DEF_VISIT 00091 private: 00092 friend class IndentedScope; 00093 void PrintIndented(const char* txt); 00094 void PrintIndentedVisit(const char* s, Node* node); 00095 00096 void PrintStatements(ZoneList<Statement*>* statements); 00097 void PrintDeclarations(ZoneList<Declaration*>* declarations); 00098 void PrintParameters(Scope* scope); 00099 void PrintArguments(ZoneList<Expression*>* arguments); 00100 void PrintCaseClause(CaseClause* clause); 00101 void PrintLiteralIndented(const char* info, Handle<Object> value, bool quote); 00102 void PrintLiteralWithModeIndented(const char* info, 00103 Variable* var, 00104 Handle<Object> value, 00105 StaticType* type); 00106 void PrintLabelsIndented(const char* info, ZoneStringList* labels); 00107 00108 void inc_indent() { indent_++; } 00109 void dec_indent() { indent_--; } 00110 00111 static int indent_; 00112 }; 00113 00114 #endif // DEBUG 00115 00116 } } // namespace v8::internal 00117 00118 #endif // V8_PRETTYPRINTER_H_
