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 34namespace v8 { 35namespace internal { 36 37#ifdef DEBUG 38 39class 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(); 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 81class 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); 108 109 void inc_indent() { 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