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 * $Id$
6 */
7
8 #include <iostream>
9
10 #include "antlr/CharScanner.hpp"
11 #include "antlr/CommonToken.hpp"
12
13 #ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
14 namespace antlr {
15 #endif
ANTLR_C_USING(exit)16 ANTLR_C_USING(exit)
17
18 CharScanner::CharScanner(InputBuffer& cb, bool case_sensitive )
19 : saveConsumedInput(true) //, caseSensitiveLiterals(true)
20 , caseSensitive(case_sensitive)
21 , literals(CharScannerLiteralsLess(this))
22 , inputState(new LexerInputState(cb))
23 , commitToPath(false)
24 , tabsize(8)
25 , traceDepth(0)
26 {
27 setTokenObjectFactory(&CommonToken::factory);
28 }
29
CharScanner(InputBuffer * cb,bool case_sensitive)30 CharScanner::CharScanner(InputBuffer* cb, bool case_sensitive )
31 : saveConsumedInput(true) //, caseSensitiveLiterals(true)
32 , caseSensitive(case_sensitive)
33 , literals(CharScannerLiteralsLess(this))
34 , inputState(new LexerInputState(cb))
35 , commitToPath(false)
36 , tabsize(8)
37 , traceDepth(0)
38 {
39 setTokenObjectFactory(&CommonToken::factory);
40 }
41
CharScanner(const LexerSharedInputState & state,bool case_sensitive)42 CharScanner::CharScanner( const LexerSharedInputState& state, bool case_sensitive )
43 : saveConsumedInput(true) //, caseSensitiveLiterals(true)
44 , caseSensitive(case_sensitive)
45 , literals(CharScannerLiteralsLess(this))
46 , inputState(state)
47 , commitToPath(false)
48 , tabsize(8)
49 , traceDepth(0)
50 {
51 setTokenObjectFactory(&CommonToken::factory);
52 }
53
54 /** Report exception errors caught in nextToken() */
reportError(const RecognitionException & ex)55 void CharScanner::reportError(const RecognitionException& ex)
56 {
57 ANTLR_USE_NAMESPACE(std)cerr << ex.toString().c_str() << ANTLR_USE_NAMESPACE(std)endl;
58 }
59
60 /** Parser error-reporting function can be overridden in subclass */
reportError(const ANTLR_USE_NAMESPACE (std)string & s)61 void CharScanner::reportError(const ANTLR_USE_NAMESPACE(std)string& s)
62 {
63 if (getFilename() == "")
64 ANTLR_USE_NAMESPACE(std)cerr << "error: " << s.c_str() << ANTLR_USE_NAMESPACE(std)endl;
65 else
66 ANTLR_USE_NAMESPACE(std)cerr << getFilename().c_str() << ": error: " << s.c_str() << ANTLR_USE_NAMESPACE(std)endl;
67 }
68
69 /** Parser warning-reporting function can be overridden in subclass */
reportWarning(const ANTLR_USE_NAMESPACE (std)string & s)70 void CharScanner::reportWarning(const ANTLR_USE_NAMESPACE(std)string& s)
71 {
72 if (getFilename() == "")
73 ANTLR_USE_NAMESPACE(std)cerr << "warning: " << s.c_str() << ANTLR_USE_NAMESPACE(std)endl;
74 else
75 ANTLR_USE_NAMESPACE(std)cerr << getFilename().c_str() << ": warning: " << s.c_str() << ANTLR_USE_NAMESPACE(std)endl;
76 }
77
traceIndent()78 void CharScanner::traceIndent()
79 {
80 for( int i = 0; i < traceDepth; i++ )
81 ANTLR_USE_NAMESPACE(std)cout << " ";
82 }
83
traceIn(const char * rname)84 void CharScanner::traceIn(const char* rname)
85 {
86 traceDepth++;
87 traceIndent();
88 ANTLR_USE_NAMESPACE(std)cout << "> lexer " << rname
89 << "; c==" << LA(1) << ANTLR_USE_NAMESPACE(std)endl;
90 }
91
traceOut(const char * rname)92 void CharScanner::traceOut(const char* rname)
93 {
94 traceIndent();
95 ANTLR_USE_NAMESPACE(std)cout << "< lexer " << rname
96 << "; c==" << LA(1) << ANTLR_USE_NAMESPACE(std)endl;
97 traceDepth--;
98 }
99
100 #ifndef NO_STATIC_CONSTS
101 const int CharScanner::NO_CHAR;
102 const int CharScanner::EOF_CHAR;
103 #endif
104
105 #ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
106 }
107 #endif
108
109