1 // Copyright 2012 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 4 // met: 5 // 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. 15 // 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. 27 28 #ifndef V8_PRETTYPRINTER_H_ 29 #define V8_PRETTYPRINTER_H_ 30 31 #include "allocation.h" 32 #include "ast.h" 33 34 namespace v8 { 35 namespace internal { 36 37 #ifdef DEBUG 38 39 class PrettyPrinter: public AstVisitor { 40 public: 41 PrettyPrinter(); 42 virtual ~PrettyPrinter(); 43 44 // The following routines print a node into a string. 45 // The result string is alive as long as the PrettyPrinter is alive. 46 const char* Print(AstNode* node); 47 const char* PrintExpression(FunctionLiteral* program); 48 const char* PrintProgram(FunctionLiteral* program); 49 50 void Print(const char* format, ...); 51 52 // Print a node to stdout. 53 static void PrintOut(AstNode* node); 54 55 // Individual nodes 56 #define DECLARE_VISIT(type) virtual void Visit##type(type* node); 57 AST_NODE_LIST(DECLARE_VISIT) 58 #undef DECLARE_VISIT 59 60 private: 61 char* output_; // output string buffer 62 int size_; // output_ size 63 int pos_; // current printing position 64 65 protected: 66 void Init(); Output()67 const char* Output() const { return output_; } 68 69 virtual void PrintStatements(ZoneList<Statement*>* statements); 70 void PrintLabels(ZoneStringList* labels); 71 virtual void PrintArguments(ZoneList<Expression*>* arguments); 72 void PrintLiteral(Handle<Object> value, bool quote); 73 void PrintParameters(Scope* scope); 74 void PrintDeclarations(ZoneList<Declaration*>* declarations); 75 void PrintFunctionLiteral(FunctionLiteral* function); 76 void PrintCaseClause(CaseClause* clause); 77 }; 78 79 80 // Prints the AST structure 81 class AstPrinter: public PrettyPrinter { 82 public: 83 AstPrinter(); 84 virtual ~AstPrinter(); 85 86 const char* PrintProgram(FunctionLiteral* program); 87 88 // Individual nodes 89 #define DECLARE_VISIT(type) virtual void Visit##type(type* node); 90 AST_NODE_LIST(DECLARE_VISIT) 91 #undef DECLARE_VISIT 92 93 private: 94 friend class IndentedScope; 95 void PrintIndented(const char* txt); 96 void PrintIndentedVisit(const char* s, AstNode* node); 97 98 void PrintStatements(ZoneList<Statement*>* statements); 99 void PrintDeclarations(ZoneList<Declaration*>* declarations); 100 void PrintParameters(Scope* scope); 101 void PrintArguments(ZoneList<Expression*>* arguments); 102 void PrintCaseClause(CaseClause* clause); 103 void PrintLiteralIndented(const char* info, Handle<Object> value, bool quote); 104 void PrintLiteralWithModeIndented(const char* info, 105 Variable* var, 106 Handle<Object> value); 107 void PrintLabelsIndented(const char* info, ZoneStringList* labels); 108 inc_indent()109 void inc_indent() { indent_++; } dec_indent()110 void dec_indent() { indent_--; } 111 112 int indent_; 113 }; 114 115 #endif // DEBUG 116 117 } } // namespace v8::internal 118 119 #endif // V8_PRETTYPRINTER_H_ 120