/** Implementation of matchc for the lexer, overrides any
* base implementation in the base recognizer.
*
* \remark
* Note that the generated code lays down arrays of ints for constant
* strings so that they are int UTF32 form!
*/
static ANTLR3_BOOLEAN
matchc(pANTLR3_LEXER lexer, ANTLR3_UCHAR c)
{
if (lexer->input->istream->_LA(lexer->input->istream, 1) == c)
{
/* Matched correctly, do consume it
*/
lexer->input->istream->consume(lexer->input->istream);
/* Reset any failed indicator
*/
lexer->rec->state->failed = ANTLR3_FALSE;
return ANTLR3_TRUE;
}
/* Failed to match, exception and recovery time.
*/
if (lexer->rec->state->backtracking > 0)
{
lexer->rec->state->failed = ANTLR3_TRUE;
return ANTLR3_FALSE;
}
lexer->rec->exConstruct(lexer->rec);
/* TODO: Implement exception creation more fully perhaps
*/
lexer->recover(lexer);
return ANTLR3_FALSE;
}
/** Implementation of matchs for the lexer, overrides any
* base implementation in the base recognizer.
*
* \remark
* Note that the generated code lays down arrays of ints for constant
* strings so that they are int UTF32 form!
*/
static ANTLR3_BOOLEAN
matchs(pANTLR3_LEXER lexer, ANTLR3_UCHAR * string)
{
while (*string != ANTLR3_STRING_TERMINATOR)
{
if (lexer->input->istream->_LA(lexer->input->istream, 1) != (*string))
{
if (lexer->rec->state->backtracking > 0)
{
lexer->rec->state->failed = ANTLR3_TRUE;
return ANTLR3_FALSE;
}
lexer->rec->exConstruct(lexer->rec);
lexer->rec->state->failed = ANTLR3_TRUE;
/* TODO: Implement exception creation more fully perhaps
*/
lexer->recover(lexer);
return ANTLR3_FALSE;
}
/* Matched correctly, do consume it
*/
lexer->input->istream->consume(lexer->input->istream);
string++;
/* Reset any failed indicator
*/
lexer->rec->state->failed = ANTLR3_FALSE;
}
return ANTLR3_TRUE;
}
/** Implementation of match range for the lexer, overrides any
* base implementation in the base recognizer.
*
* \remark
* Note that the generated code lays down arrays of ints for constant
* strings so that they are int UTF32 form!
*/
static ANTLR3_BOOLEAN
matchRange(pANTLR3_LEXER lexer, ANTLR3_UCHAR low, ANTLR3_UCHAR high)
{
ANTLR3_UCHAR c;
/* What is in the stream at the moment?
*/
c = lexer->input->istream->_LA(lexer->input->istream, 1);
if ( c >= low && c <= high)
{
/* Matched correctly, consume it
*/
lexer->input->istream->consume(lexer->input->istream);
/* Reset any failed indicator
*/
lexer->rec->state->failed = ANTLR3_FALSE;
return ANTLR3_TRUE;
}
/* Failed to match, execption and recovery time.
*/
if (lexer->rec->state->backtracking > 0)
{
lexer->rec->state->failed = ANTLR3_TRUE;
return ANTLR3_FALSE;
}
lexer->rec->exConstruct(lexer->rec);
/* TODO: Implement exception creation more fully
*/
lexer->recover(lexer);
return ANTLR3_FALSE;
}
