1 /* 2 * Copyright 2008, Haiku. 3 * Distributed under the terms of the MIT license. 4 * 5 * Authors: 6 * Michael Pfeiffer <laplace@users.sourceforge.net> 7 */ 8 9 #ifndef _PARSER_H 10 #define _PARSER_H 11 12 #include "Scanner.h" 13 #include "Statement.h" 14 15 // PPD statement parser 16 class Parser 17 { 18 private: 19 Scanner fScanner; 20 21 int GetCurrentChar() { return fScanner.GetCurrentChar(); } 22 void NextChar() { fScanner.NextChar(); } 23 24 void SkipWhitespaces(); 25 void SkipComment(); 26 void SkipWhitespaceSeparator(); 27 bool ParseKeyword(Statement* statement); 28 bool ParseTranslation(Value* value, int separator = -1); 29 bool ParseOption(Statement* statement); 30 bool ParseValue(Statement* statement); 31 void UpdateStatementType(Statement* statement); 32 Statement* ParseStatement(); 33 34 protected: 35 void Warning(const char* message) { fScanner.Warning(message); } 36 void Error(const char* message) { fScanner.Error(message); } 37 38 public: 39 // Initializes the parser with the file 40 Parser(const char* file); 41 // Returns B_OK if the constructor could open the file 42 // successfully 43 status_t InitCheck(); 44 45 // Includes the file for parsing 46 bool Include(const char* file) { return fScanner.Include(file); } 47 48 // Returns the statement or null on eof or on error 49 Statement* Parse(); 50 // Returns true if there was a parsing error 51 bool HasError() { return fScanner.HasError(); } 52 // The error message of the parsing error 53 const char* GetErrorMessage() { return fScanner.GetErrorMessage(); } 54 // Returns true if there are any warnings 55 bool HasWarning() { return fScanner.HasWarning(); } 56 // Returns the waring message 57 const char* GetWarningMessage() { return fScanner.GetWarningMessage(); } 58 }; 59 60 #endif 61