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/* SPIM S20 MIPS simulator.
Interface to lexical scanner.
Copyright (c) 1990-2010, James R. Larus.
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
Neither the name of the James R. Larus nor the names of its contributors may be
used to endorse or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* Exported functions (besides yylex): */
void initialize_scanner (FILE *in_file);
void print_erroneous_line ();
void scanner_start_line ();
int register_name_to_number (char *name);
char *source_line ();
int yylex ();
/* Exported Variables: */
/* This flag tells the scanner to treat the next sequence of letters
etc as an identifier and not look it up as an opcode. It permits us
to use opcodes as symbols in most places. However, because of the
LALR(1) lookahead, it does not work for labels. */
extern int only_id;
typedef intptr_union yylval_t;
#define YYSTYPE yylval_t
extern YYSTYPE yylval; /* Value of token from YYLEX */
extern int line_no; /* Line number in input file*/
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