1  /* ANTLR Translator Generator
  2   * Project led by Terence Parr at http://www.jGuru.com
  3   * Software rights: http://www.antlr.org/license.html
  4   *
  5   * $Id: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/src/CharScanner.cpp#2 $
  6   */
  7  
  8  #include <stdio.h>
  9  #include <string>
 10  
 11  #include "antlr/CharScanner.hpp"
 12  #include "antlr/CommonToken.hpp"
 13  
 14  #ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
 15  namespace antlr {
 16  #endif
 17  ANTLR_C_USING(exit)
 18  
 19  CharScanner::CharScanner(InputBuffer& cb, bool case_sensitive )
 20  	: saveConsumedInput(true) //, caseSensitiveLiterals(true)
 21  	, caseSensitive(case_sensitive)
 22  	, literals(CharScannerLiteralsLess(this))
 23  	, inputState(new LexerInputState(cb))
 24  	, commitToPath(false)
 25  	, tabsize(8)
 26  	, traceDepth(0)
 27  {
 28  	setTokenObjectFactory(&CommonToken::factory);
 29  }
 30  
 31  CharScanner::CharScanner(InputBuffer* cb, bool case_sensitive )
 32  	: saveConsumedInput(true) //, caseSensitiveLiterals(true)
 33  	, caseSensitive(case_sensitive)
 34  	, literals(CharScannerLiteralsLess(this))
 35  	, inputState(new LexerInputState(cb))
 36  	, commitToPath(false)
 37  	, tabsize(8)
 38  	, traceDepth(0)
 39  {
 40  	setTokenObjectFactory(&CommonToken::factory);
 41  }
 42  
 43  CharScanner::CharScanner( const LexerSharedInputState& state, bool case_sensitive )
 44  	: saveConsumedInput(true) //, caseSensitiveLiterals(true)
 45  	, caseSensitive(case_sensitive)
 46  	, literals(CharScannerLiteralsLess(this))
 47  	, inputState(state)
 48  	, commitToPath(false)
 49  	, tabsize(8)
 50  	, traceDepth(0)
 51  {
 52  	setTokenObjectFactory(&CommonToken::factory);
 53  }
 54  
 55  /** Report exception errors caught in nextToken() */
 56  void CharScanner::reportError(const RecognitionException& ex)
 57  {
 58  	fprintf(stderr, "%s", (ex.toString() + "\n").c_str());
 59  }
 60  
 61  /** Parser error-reporting function can be overridden in subclass */
 62  void CharScanner::reportError(const ANTLR_USE_NAMESPACE(std)string& s)
 63  {
 64  	if ( getFilename()=="" )
 65  		fprintf(stderr, "%s", ("error: " + s + "\n").c_str());
 66  	else
 67  		fprintf(stderr, "%s", (getFilename() + ": error: " + s + "\n").c_str());
 68  }
 69  
 70  /** Parser warning-reporting function can be overridden in subclass */
 71  void CharScanner::reportWarning(const ANTLR_USE_NAMESPACE(std)string& s)
 72  {
 73  	if ( getFilename()=="" )
 74  		fprintf(stderr, "%s", ("warning: " + s + "\n").c_str());
 75  	else
 76  		fprintf(stderr, "%s", (getFilename() + ": warning: " + s + "\n").c_str());
 77  }
 78  
 79  void CharScanner::traceIndent()
 80  {
 81  	for( int i = 0; i < traceDepth; i++ )
 82  		printf(" ");
 83  }
 84  
 85  void CharScanner::traceIn(const char* rname)
 86  {
 87  	traceDepth++;
 88  	traceIndent();
 89  	printf("> lexer %s; c==%d\n", rname, LA(1));
 90  }
 91  
 92  void CharScanner::traceOut(const char* rname)
 93  {
 94  	traceIndent();
 95  	printf("< lexer %s; c==%d\n", rname, LA(1));
 96  	traceDepth--;
 97  }
 98  
 99  #ifndef NO_STATIC_CONSTS
100  const int CharScanner::NO_CHAR;
101  const int CharScanner::EOF_CHAR;
102  #endif
103  
104  #ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
105  }
106  #endif
107