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freebsd-dev/gnu/usr.bin/bc/scan.c

1369 lines
35 KiB
C
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New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
/* A lexical scanner generated by flex */
/* scanner skeleton version:
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
* $Header: /home/ncvs/src/gnu/usr.bin/bc/scan.c,v 1.1.1.1 1993/06/19 00:26:18 paul Exp $
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
*/
#define FLEX_SCANNER
#include <stdio.h>
/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
#ifdef c_plusplus
#ifndef __cplusplus
#define __cplusplus
#endif
#endif
#ifdef __cplusplus
#include <stdlib.h>
#include <osfcn.h>
/* use prototypes in function declarations */
#define YY_USE_PROTOS
/* the "const" storage-class-modifier is valid */
#define YY_USE_CONST
#else /* ! __cplusplus */
#ifdef __STDC__
#ifdef __GNUC__
#include <stddef.h>
void *malloc( size_t );
void free( void* );
#else
#include <stdlib.h>
#endif /* __GNUC__ */
#define YY_USE_PROTOS
#define YY_USE_CONST
#endif /* __STDC__ */
#endif /* ! __cplusplus */
#ifdef __TURBOC__
#define YY_USE_CONST
#endif
#ifndef YY_USE_CONST
#define const
#endif
#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
/* we can't get here if it's an ANSI C compiler, or a C++ compiler,
* so it's got to be a K&R compiler, and therefore there's no standard
* place from which to include these definitions
*/
/* char *malloc();
int free(); */
int read();
#endif
/* amount of stuff to slurp up with each read */
#ifndef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 8192
#endif
/* returned upon end-of-file */
#define YY_END_TOK 0
/* copy whatever the last rule matched to the standard output */
/* cast to (char *) is because for 8-bit chars, yytext is (unsigned char *) */
/* this used to be an fputs(), but since the string might contain NUL's,
* we now use fwrite()
*/
#define ECHO (void) fwrite( (char *) yytext, yyleng, 1, yyout )
/* gets input and stuffs it into "buf". number of characters read, or YY_NULL,
* is returned in "result".
*/
#define YY_INPUT(buf,result,max_size) \
if ( (result = read( fileno(yyin), (char *) buf, max_size )) < 0 ) \
YY_FATAL_ERROR( "read() in flex scanner failed" );
#define YY_NULL 0
/* no semi-colon after return; correct usage is to write "yyterminate();" -
* we don't want an extra ';' after the "return" because that will cause
* some compilers to complain about unreachable statements.
*/
#define yyterminate() return ( YY_NULL )
/* report a fatal error */
/* The funky do-while is used to turn this macro definition into
* a single C statement (which needs a semi-colon terminator).
* This avoids problems with code like:
*
* if ( something_happens )
* YY_FATAL_ERROR( "oops, the something happened" );
* else
* everything_okay();
*
* Prior to using the do-while the compiler would get upset at the
* "else" because it interpreted the "if" statement as being all
* done when it reached the ';' after the YY_FATAL_ERROR() call.
*/
#define YY_FATAL_ERROR(msg) \
do \
{ \
(void) fputs( msg, stderr ); \
(void) putc( '\n', stderr ); \
exit( 1 ); \
} \
while ( 0 )
/* default yywrap function - always treat EOF as an EOF */
#define yywrap() 1
/* enter a start condition. This macro really ought to take a parameter,
* but we do it the disgusting crufty way forced on us by the ()-less
* definition of BEGIN
*/
#define BEGIN yy_start = 1 + 2 *
/* action number for EOF rule of a given start state */
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
/* special action meaning "start processing a new file" */
#define YY_NEW_FILE \
do \
{ \
yy_init_buffer( yy_current_buffer, yyin ); \
yy_load_buffer_state(); \
} \
while ( 0 )
/* default declaration of generated scanner - a define so the user can
* easily add parameters
*/
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
#define YY_DECL int yylex YY_PROTO(( void ))
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
/* code executed at the end of each rule */
#define YY_BREAK break;
#define YY_END_OF_BUFFER_CHAR 0
#ifndef YY_BUF_SIZE
#define YY_BUF_SIZE (YY_READ_BUF_SIZE * 2) /* size of default input buffer */
#endif
typedef struct yy_buffer_state *YY_BUFFER_STATE;
#define YY_CHAR unsigned char
# line 1 "scan.l"
#define INITIAL 0
# line 2 "scan.l"
/* scan.l: the (f)lex description file for the scanner. */
/* This file is part of bc written for MINIX.
Copyright (C) 1991, 1992 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License , or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
You may contact the author by:
e-mail: phil@cs.wwu.edu
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
*************************************************************************/
#include "bcdefs.h"
#include "y.tab.h"
#include "global.h"
#include "proto.h"
/* Using flex, we can ask for a smaller input buffer. With lex, this
does nothing! */
#ifdef SMALL_BUF
#undef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 512
#endif
/* We want to define our own yywrap. */
#undef yywrap
_PROTOTYPE(int yywrap, (void));
/* MINIX returns from read with < 0 if SIGINT is encountered.
In flex, we can redefine YY_INPUT to the following. In lex, this
does nothing! */
#include <errno.h>
#undef YY_INPUT
#define YY_INPUT(buf,result,max_size) \
while ( (result = read( fileno(yyin), (char *) buf, max_size )) < 0 ) \
if (errno != EINTR) \
YY_FATAL_ERROR( "read() in flex scanner failed" );
# line 60 "scan.l"
/* done after the current pattern has been matched and before the
* corresponding action - sets up yytext
*/
#define YY_DO_BEFORE_ACTION \
yytext = yy_bp; \
yyleng = yy_cp - yy_bp; \
yy_hold_char = *yy_cp; \
*yy_cp = '\0'; \
yy_c_buf_p = yy_cp;
#define EOB_ACT_CONTINUE_SCAN 0
#define EOB_ACT_END_OF_FILE 1
#define EOB_ACT_LAST_MATCH 2
/* return all but the first 'n' matched characters back to the input stream */
#define yyless(n) \
do \
{ \
/* undo effects of setting up yytext */ \
*yy_cp = yy_hold_char; \
yy_c_buf_p = yy_cp = yy_bp + n; \
YY_DO_BEFORE_ACTION; /* set up yytext again */ \
} \
while ( 0 )
#define unput(c) yyunput( c, yytext )
struct yy_buffer_state
{
FILE *yy_input_file;
YY_CHAR *yy_ch_buf; /* input buffer */
YY_CHAR *yy_buf_pos; /* current position in input buffer */
/* size of input buffer in bytes, not including room for EOB characters*/
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
int yy_buf_size;
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
/* number of characters read into yy_ch_buf, not including EOB characters */
int yy_n_chars;
int yy_eof_status; /* whether we've seen an EOF on this buffer */
#define EOF_NOT_SEEN 0
/* "pending" happens when the EOF has been seen but there's still
* some text process
*/
#define EOF_PENDING 1
#define EOF_DONE 2
};
static YY_BUFFER_STATE yy_current_buffer;
/* we provide macros for accessing buffer states in case in the
* future we want to put the buffer states in a more general
* "scanner state"
*/
#define YY_CURRENT_BUFFER yy_current_buffer
/* yy_hold_char holds the character lost when yytext is formed */
static YY_CHAR yy_hold_char;
static int yy_n_chars; /* number of characters read into yy_ch_buf */
#ifndef YY_USER_ACTION
#define YY_USER_ACTION
#endif
#ifndef YY_USER_INIT
#define YY_USER_INIT
#endif
extern YY_CHAR *yytext;
extern int yyleng;
extern FILE *yyin, *yyout;
YY_CHAR *yytext;
int yyleng;
FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
#define YY_END_OF_BUFFER 40
typedef int yy_state_type;
static const short int yy_accept[144] =
{ 0,
0, 0, 40, 38, 33, 31, 25, 38, 26, 38,
22, 26, 22, 22, 38, 26, 37, 29, 27, 29,
38, 22, 35, 35, 35, 35, 35, 35, 35, 35,
35, 35, 35, 35, 35, 35, 35, 35, 38, 33,
29, 0, 36, 27, 23, 30, 37, 0, 34, 37,
37, 0, 28, 32, 35, 35, 35, 35, 35, 35,
35, 35, 35, 7, 35, 35, 35, 35, 35, 35,
35, 35, 35, 35, 35, 24, 37, 0, 0, 37,
0, 35, 35, 35, 35, 35, 6, 35, 35, 35,
35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
35, 13, 35, 35, 35, 14, 16, 35, 17, 35,
35, 35, 35, 3, 15, 35, 35, 9, 35, 35,
2, 35, 35, 11, 35, 35, 12, 20, 35, 10,
35, 8, 35, 1, 4, 21, 5, 35, 35, 35,
19, 18, 0
} ;
static const YY_CHAR yy_ec[256] =
{ 0,
1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 2, 4, 5, 1, 1, 6, 7, 1, 8,
9, 10, 11, 12, 13, 14, 15, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 1, 17, 18,
19, 20, 1, 1, 21, 21, 21, 21, 21, 21,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
22, 23, 24, 25, 26, 1, 27, 28, 29, 30,
31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 36, 48, 36,
49, 36, 50, 51, 52, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1
} ;
static const YY_CHAR yy_meta[53] =
{ 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 2, 1, 1, 1, 1,
1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 1,
1, 1
} ;
static const short int yy_base[146] =
{ 0,
0, 0, 193, 194, 190, 194, 172, 185, 170, 181,
194, 168, 42, 41, 41, 46, 52, 167, 61, 166,
181, 164, 135, 137, 139, 148, 140, 136, 0, 149,
27, 50, 147, 130, 126, 141, 40, 36, 120, 168,
194, 164, 194, 194, 194, 194, 66, 165, 194, 72,
76, 164, 194, 194, 0, 120, 134, 124, 131, 117,
117, 122, 132, 0, 113, 117, 117, 128, 119, 118,
52, 125, 107, 106, 114, 194, 80, 145, 84, 88,
144, 105, 118, 98, 108, 111, 0, 95, 95, 93,
105, 102, 91, 95, 88, 103, 85, 93, 84, 85,
90, 0, 90, 91, 85, 0, 0, 93, 0, 77,
76, 90, 74, 0, 0, 75, 87, 0, 90, 85,
0, 75, 83, 0, 76, 63, 0, 0, 66, 0,
62, 0, 47, 0, 0, 0, 0, 45, 53, 29,
0, 0, 194, 111, 56
} ;
static const short int yy_def[146] =
{ 0,
143, 1, 143, 143, 143, 143, 143, 144, 143, 143,
143, 143, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 145, 145, 145, 145, 145, 145, 145, 145,
145, 145, 145, 145, 145, 145, 145, 145, 143, 143,
143, 144, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 145, 145, 145, 145, 145, 145,
145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
145, 145, 145, 145, 145, 143, 143, 143, 143, 143,
143, 145, 145, 145, 145, 145, 145, 145, 145, 145,
145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
145, 145, 0, 143, 143
} ;
static const short int yy_nxt[247] =
{ 0,
4, 5, 6, 7, 8, 9, 10, 11, 11, 12,
13, 11, 14, 15, 16, 17, 11, 18, 19, 20,
17, 11, 21, 11, 22, 4, 23, 24, 25, 26,
27, 28, 29, 30, 31, 29, 29, 32, 29, 29,
33, 34, 35, 36, 37, 29, 29, 38, 29, 11,
39, 11, 46, 46, 63, 49, 47, 55, 64, 44,
44, 47, 74, 48, 44, 50, 53, 51, 72, 75,
53, 53, 51, 53, 52, 53, 65, 142, 96, 41,
66, 77, 73, 141, 67, 53, 77, 80, 78, 50,
140, 51, 80, 139, 81, 77, 51, 97, 52, 47,
77, 138, 78, 80, 47, 137, 48, 136, 80, 135,
81, 42, 42, 134, 133, 132, 131, 130, 129, 128,
127, 126, 125, 124, 123, 122, 121, 120, 119, 118,
117, 116, 115, 114, 113, 112, 111, 110, 109, 108,
107, 106, 105, 104, 103, 102, 80, 77, 101, 100,
99, 98, 95, 94, 93, 92, 91, 90, 89, 88,
87, 86, 85, 84, 83, 82, 51, 79, 43, 40,
76, 71, 70, 69, 68, 62, 61, 60, 59, 58,
57, 56, 44, 54, 41, 41, 44, 45, 44, 43,
41, 40, 143, 3, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143
} ;
static const short int yy_chk[247] =
{ 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 13, 14, 31, 16, 15, 145, 31, 14,
13, 15, 38, 15, 16, 17, 19, 17, 37, 38,
19, 19, 17, 19, 17, 19, 32, 140, 71, 19,
32, 47, 37, 139, 32, 19, 47, 50, 47, 51,
138, 51, 50, 133, 50, 77, 51, 71, 51, 79,
77, 131, 77, 80, 79, 129, 79, 126, 80, 125,
80, 144, 144, 123, 122, 120, 119, 117, 116, 113,
112, 111, 110, 108, 105, 104, 103, 101, 100, 99,
98, 97, 96, 95, 94, 93, 92, 91, 90, 89,
88, 86, 85, 84, 83, 82, 81, 78, 75, 74,
73, 72, 70, 69, 68, 67, 66, 65, 63, 62,
61, 60, 59, 58, 57, 56, 52, 48, 42, 40,
39, 36, 35, 34, 33, 30, 28, 27, 26, 25,
24, 23, 22, 21, 20, 18, 12, 10, 9, 8,
7, 5, 3, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143, 143, 143, 143, 143,
143, 143, 143, 143, 143, 143
} ;
static yy_state_type yy_last_accepting_state;
static YY_CHAR *yy_last_accepting_cpos;
/* the intent behind this definition is that it'll catch
* any uses of REJECT which flex missed
*/
#define REJECT reject_used_but_not_detected
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
/* these variables are all declared out here so that section 3 code can
* manipulate them
*/
/* points to current character in buffer */
static YY_CHAR *yy_c_buf_p = (YY_CHAR *) 0;
static int yy_init = 1; /* whether we need to initialize */
static int yy_start = 0; /* start state number */
/* flag which is used to allow yywrap()'s to do buffer switches
* instead of setting up a fresh yyin. A bit of a hack ...
*/
static int yy_did_buffer_switch_on_eof;
static yy_state_type yy_get_previous_state YY_PROTO(( void ));
static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
static int yy_get_next_buffer YY_PROTO(( void ));
static void yyunput YY_PROTO(( YY_CHAR c, YY_CHAR *buf_ptr ));
void yyrestart YY_PROTO(( FILE *input_file ));
void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
void yy_load_buffer_state YY_PROTO(( void ));
YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
#define yy_new_buffer yy_create_buffer
#ifdef __cplusplus
static int yyinput YY_PROTO(( void ));
#else
static int input YY_PROTO(( void ));
#endif
YY_DECL
{
register yy_state_type yy_current_state;
register YY_CHAR *yy_cp, *yy_bp;
register int yy_act;
if ( yy_init )
{
YY_USER_INIT;
if ( ! yy_start )
yy_start = 1; /* first start state */
if ( ! yyin )
yyin = stdin;
if ( ! yyout )
yyout = stdout;
if ( yy_current_buffer )
yy_init_buffer( yy_current_buffer, yyin );
else
yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE );
yy_load_buffer_state();
yy_init = 0;
}
while ( 1 ) /* loops until end-of-file is reached */
{
yy_cp = yy_c_buf_p;
/* support of yytext */
*yy_cp = yy_hold_char;
/* yy_bp points to the position in yy_ch_buf of the start of the
* current run.
*/
yy_bp = yy_cp;
yy_current_state = yy_start;
yy_match:
do
{
register YY_CHAR yy_c = yy_ec[*yy_cp];
if ( yy_accept[yy_current_state] )
{
yy_last_accepting_state = yy_current_state;
yy_last_accepting_cpos = yy_cp;
}
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = yy_def[yy_current_state];
if ( yy_current_state >= 144 )
yy_c = yy_meta[yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
++yy_cp;
}
while ( yy_base[yy_current_state] != 194 );
yy_find_action:
yy_act = yy_accept[yy_current_state];
YY_DO_BEFORE_ACTION;
YY_USER_ACTION;
do_action: /* this label is used only to access EOF actions */
switch ( yy_act )
{
case 0: /* must backtrack */
/* undo the effects of YY_DO_BEFORE_ACTION */
*yy_cp = yy_hold_char;
yy_cp = yy_last_accepting_cpos;
yy_current_state = yy_last_accepting_state;
goto yy_find_action;
case 1:
# line 61 "scan.l"
return(Define);
YY_BREAK
case 2:
# line 62 "scan.l"
return(Break);
YY_BREAK
case 3:
# line 63 "scan.l"
return(Quit);
YY_BREAK
case 4:
# line 64 "scan.l"
return(Length);
YY_BREAK
case 5:
# line 65 "scan.l"
return(Return);
YY_BREAK
case 6:
# line 66 "scan.l"
return(For);
YY_BREAK
case 7:
# line 67 "scan.l"
return(If);
YY_BREAK
case 8:
# line 68 "scan.l"
return(While);
YY_BREAK
case 9:
# line 69 "scan.l"
return(Sqrt);
YY_BREAK
case 10:
# line 70 "scan.l"
return(Scale);
YY_BREAK
case 11:
# line 71 "scan.l"
return(Ibase);
YY_BREAK
case 12:
# line 72 "scan.l"
return(Obase);
YY_BREAK
case 13:
# line 73 "scan.l"
return(Auto);
YY_BREAK
case 14:
# line 74 "scan.l"
return(Else);
YY_BREAK
case 15:
# line 75 "scan.l"
return(Read);
YY_BREAK
case 16:
# line 76 "scan.l"
return(Halt);
YY_BREAK
case 17:
# line 77 "scan.l"
return(Last);
YY_BREAK
case 18:
# line 78 "scan.l"
return(Warranty);
YY_BREAK
case 19:
# line 79 "scan.l"
return(Continue);
YY_BREAK
case 20:
# line 80 "scan.l"
return(Print);
YY_BREAK
case 21:
# line 81 "scan.l"
return(Limits);
YY_BREAK
case 22:
# line 82 "scan.l"
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
{ yylval.c_value = yytext[0];
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
return((int)yytext[0]); }
YY_BREAK
case 23:
# line 84 "scan.l"
{ return(AND); }
YY_BREAK
case 24:
# line 85 "scan.l"
{ return(OR); }
YY_BREAK
case 25:
# line 86 "scan.l"
{ return(NOT); }
YY_BREAK
case 26:
# line 87 "scan.l"
{ yylval.c_value = yytext[0]; return(MUL_OP); }
YY_BREAK
case 27:
# line 88 "scan.l"
{ yylval.c_value = yytext[0]; return(ASSIGN_OP); }
YY_BREAK
case 28:
# line 89 "scan.l"
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
{
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
#ifdef OLD_EQ_OP
char warn_save;
warn_save = warn_not_std;
warn_not_std = TRUE;
warn ("Old fashioned =<op>");
warn_not_std = warn_save;
yylval.c_value = yytext[1];
#else
yylval.c_value = '=';
yyless (1);
#endif
return(ASSIGN_OP);
}
YY_BREAK
case 29:
# line 103 "scan.l"
{ yylval.s_value = strcopyof(yytext); return(REL_OP); }
YY_BREAK
case 30:
# line 104 "scan.l"
{ yylval.c_value = yytext[0]; return(INCR_DECR); }
YY_BREAK
case 31:
# line 105 "scan.l"
{ line_no++; return(NEWLINE); }
YY_BREAK
case 32:
# line 106 "scan.l"
{ line_no++; /* ignore a "quoted" newline */ }
YY_BREAK
case 33:
# line 107 "scan.l"
{ /* ignore spaces and tabs */ }
YY_BREAK
case 34:
# line 108 "scan.l"
{
int c;
for (;;)
{
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
while ( ((c=input()) != '*') && (c != EOF))
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
/* eat it */
if (c == '\n') line_no++;
if (c == '*')
{
while ( (c=input()) == '*') /* eat it*/;
if (c == '/') break; /* at end of comment */
if (c == '\n') line_no++;
}
if (c == EOF)
{
fprintf (stderr,"EOF encountered in a comment.\n");
break;
}
}
}
YY_BREAK
case 35:
# line 129 "scan.l"
{ yylval.s_value = strcopyof(yytext); return(NAME); }
YY_BREAK
case 36:
# line 130 "scan.l"
{
unsigned char *look;
int count = 0;
yylval.s_value = strcopyof(yytext);
for (look = yytext; *look != 0; look++)
{
if (*look == '\n') line_no++;
if (*look == '"') count++;
}
if (count != 2) yyerror ("NUL character in string.");
return(STRING);
}
YY_BREAK
case 37:
# line 142 "scan.l"
{
unsigned char *src, *dst;
int len;
/* remove a trailing decimal point. */
len = strlen(yytext);
if (yytext[len-1] == '.')
yytext[len-1] = 0;
/* remove leading zeros. */
src = yytext;
dst = yytext;
while (*src == '0') src++;
if (*src == 0) src--;
/* Copy strings removing the newlines. */
while (*src != 0)
{
if (*src == '\\')
{
src++; src++;
line_no++;
}
else
*dst++ = *src++;
}
*dst = 0;
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
yylval.s_value = strcopyof(yytext);
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
return(NUMBER);
}
YY_BREAK
case 38:
# line 169 "scan.l"
{
if (yytext[0] < ' ')
yyerror ("illegal character: ^%c",yytext[0] + '@');
else
if (yytext[0] > '~')
yyerror ("illegal character: \\%3d", (int) yytext[0]);
else
yyerror ("illegal character: %s",yytext);
}
YY_BREAK
case 39:
# line 178 "scan.l"
ECHO;
YY_BREAK
case YY_STATE_EOF(INITIAL):
yyterminate();
case YY_END_OF_BUFFER:
{
/* amount of text matched not including the EOB char */
int yy_amount_of_matched_text = yy_cp - yytext - 1;
/* undo the effects of YY_DO_BEFORE_ACTION */
*yy_cp = yy_hold_char;
/* note that here we test for yy_c_buf_p "<=" to the position
* of the first EOB in the buffer, since yy_c_buf_p will
* already have been incremented past the NUL character
* (since all states make transitions on EOB to the end-
* of-buffer state). Contrast this with the test in yyinput().
*/
if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] )
/* this was really a NUL */
{
yy_state_type yy_next_state;
yy_c_buf_p = yytext + yy_amount_of_matched_text;
yy_current_state = yy_get_previous_state();
/* okay, we're now positioned to make the
* NUL transition. We couldn't have
* yy_get_previous_state() go ahead and do it
* for us because it doesn't know how to deal
* with the possibility of jamming (and we
* don't want to build jamming into it because
* then it will run more slowly)
*/
yy_next_state = yy_try_NUL_trans( yy_current_state );
yy_bp = yytext + YY_MORE_ADJ;
if ( yy_next_state )
{
/* consume the NUL */
yy_cp = ++yy_c_buf_p;
yy_current_state = yy_next_state;
goto yy_match;
}
else
{
goto yy_find_action;
}
}
else switch ( yy_get_next_buffer() )
{
case EOB_ACT_END_OF_FILE:
{
yy_did_buffer_switch_on_eof = 0;
if ( yywrap() )
{
/* note: because we've taken care in
* yy_get_next_buffer() to have set up yytext,
* we can now set up yy_c_buf_p so that if some
* total hoser (like flex itself) wants
* to call the scanner after we return the
* YY_NULL, it'll still work - another YY_NULL
* will get returned.
*/
yy_c_buf_p = yytext + YY_MORE_ADJ;
yy_act = YY_STATE_EOF((yy_start - 1) / 2);
goto do_action;
}
else
{
if ( ! yy_did_buffer_switch_on_eof )
YY_NEW_FILE;
}
}
break;
case EOB_ACT_CONTINUE_SCAN:
yy_c_buf_p = yytext + yy_amount_of_matched_text;
yy_current_state = yy_get_previous_state();
yy_cp = yy_c_buf_p;
yy_bp = yytext + YY_MORE_ADJ;
goto yy_match;
case EOB_ACT_LAST_MATCH:
yy_c_buf_p =
&yy_current_buffer->yy_ch_buf[yy_n_chars];
yy_current_state = yy_get_previous_state();
yy_cp = yy_c_buf_p;
yy_bp = yytext + YY_MORE_ADJ;
goto yy_find_action;
}
break;
}
default:
#ifdef FLEX_DEBUG
printf( "action # %d\n", yy_act );
#endif
YY_FATAL_ERROR(
"fatal flex scanner internal error--no action found" );
}
}
}
/* yy_get_next_buffer - try to read in a new buffer
*
* synopsis
* int yy_get_next_buffer();
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
*
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
* returns a code representing an action
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
* EOB_ACT_LAST_MATCH -
New bc-1.02 bmake sources
1993-06-19 00:26:18 +00:00
* EOB_ACT_CONTINUE_SCAN - continue scanning from current position
* EOB_ACT_END_OF_FILE - end of file
*/
static int yy_get_next_buffer()
{
register YY_CHAR *dest = yy_current_buffer->yy_ch_buf;
register YY_CHAR *source = yytext - 1; /* copy prev. char, too */
register int number_to_move, i;
int ret_val;
if ( yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1] )
YY_FATAL_ERROR(
"fatal flex scanner internal error--end of buffer missed" );
/* try to read more data */
/* first move last chars to start of buffer */
number_to_move = yy_c_buf_p - yytext;
for ( i = 0; i < number_to_move; ++i )
*(dest++) = *(source++);
if ( yy_current_buffer->yy_eof_status != EOF_NOT_SEEN )
/* don't do the read, it's not guaranteed to return an EOF,
* just force an EOF
*/
yy_n_chars = 0;
else
{
int num_to_read = yy_current_buffer->yy_buf_size - number_to_move - 1;
if ( num_to_read > YY_READ_BUF_SIZE )
num_to_read = YY_READ_BUF_SIZE;
else if ( num_to_read <= 0 )
YY_FATAL_ERROR( "fatal error - scanner input buffer overflow" );
/* read in more data */
YY_INPUT( (&yy_current_buffer->yy_ch_buf[number_to_move]),
yy_n_chars, num_to_read );
}
if ( yy_n_chars == 0 )
{
if ( number_to_move == 1 )
{
ret_val = EOB_ACT_END_OF_FILE;
yy_current_buffer->yy_eof_status = EOF_DONE;
}
else
{
ret_val = EOB_ACT_LAST_MATCH;
yy_current_buffer->yy_eof_status = EOF_PENDING;
}
}
else
ret_val = EOB_ACT_CONTINUE_SCAN;
yy_n_chars += number_to_move;
yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR;
yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;
/* yytext begins at the second character in yy_ch_buf; the first
* character is the one which preceded it before reading in the latest
* buffer; it needs to be kept around in case it's a newline, so
* yy_get_previous_state() will have with '^' rules active
*/
yytext = &yy_current_buffer->yy_ch_buf[1];
return ( ret_val );
}
/* yy_get_previous_state - get the state just before the EOB char was reached
*
* synopsis
* yy_state_type yy_get_previous_state();
*/
static yy_state_type yy_get_previous_state()
{
register yy_state_type yy_current_state;
register YY_CHAR *yy_cp;
yy_current_state = yy_start;
for ( yy_cp = yytext + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp )
{
register YY_CHAR yy_c = (*yy_cp ? yy_ec[*yy_cp] : 1);
if ( yy_accept[yy_current_state] )
{
yy_last_accepting_state = yy_current_state;
yy_last_accepting_cpos = yy_cp;
}
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = yy_def[yy_current_state];
if ( yy_current_state >= 144 )
yy_c = yy_meta[yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
}
return ( yy_current_state );
}
/* yy_try_NUL_trans - try to make a transition on the NUL character
*
* synopsis
* next_state = yy_try_NUL_trans( current_state );
*/
#ifdef YY_USE_PROTOS
static yy_state_type yy_try_NUL_trans( register yy_state_type yy_current_state )
#else
static yy_state_type yy_try_NUL_trans( yy_current_state )
register yy_state_type yy_current_state;
#endif
{
register int yy_is_jam;
register YY_CHAR *yy_cp = yy_c_buf_p;
register YY_CHAR yy_c = 1;
if ( yy_accept[yy_current_state] )
{
yy_last_accepting_state = yy_current_state;
yy_last_accepting_cpos = yy_cp;
}
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = yy_def[yy_current_state];
if ( yy_current_state >= 144 )
yy_c = yy_meta[yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
yy_is_jam = (yy_current_state == 143);
return ( yy_is_jam ? 0 : yy_current_state );
}
#ifdef YY_USE_PROTOS
static void yyunput( YY_CHAR c, register YY_CHAR *yy_bp )
#else
static void yyunput( c, yy_bp )
YY_CHAR c;
register YY_CHAR *yy_bp;
#endif
{
register YY_CHAR *yy_cp = yy_c_buf_p;
/* undo effects of setting up yytext */
*yy_cp = yy_hold_char;
if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
{ /* need to shift things up to make room */
register int number_to_move = yy_n_chars + 2; /* +2 for EOB chars */
register YY_CHAR *dest =
&yy_current_buffer->yy_ch_buf[yy_current_buffer->yy_buf_size + 2];
register YY_CHAR *source =
&yy_current_buffer->yy_ch_buf[number_to_move];
while ( source > yy_current_buffer->yy_ch_buf )
*--dest = *--source;
yy_cp += dest - source;
yy_bp += dest - source;
yy_n_chars = yy_current_buffer->yy_buf_size;
if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
YY_FATAL_ERROR( "flex scanner push-back overflow" );
}
if ( yy_cp > yy_bp && yy_cp[-1] == '\n' )
yy_cp[-2] = '\n';
*--yy_cp = c;
/* note: the formal parameter *must* be called "yy_bp" for this
* macro to now work correctly
*/
YY_DO_BEFORE_ACTION; /* set up yytext again */
}
#ifdef __cplusplus
static int yyinput()
#else
static int input()
#endif
{
int c;
YY_CHAR *yy_cp = yy_c_buf_p;
*yy_cp = yy_hold_char;
if ( *yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
{
/* yy_c_buf_p now points to the character we want to return.
* If this occurs *before* the EOB characters, then it's a
* valid NUL; if not, then we've hit the end of the buffer.
*/
if ( yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars] )
/* this was really a NUL */
*yy_c_buf_p = '\0';
else
{ /* need more input */
yytext = yy_c_buf_p;
++yy_c_buf_p;
switch ( yy_get_next_buffer() )
{
case EOB_ACT_END_OF_FILE:
{
if ( yywrap() )
{
yy_c_buf_p = yytext + YY_MORE_ADJ;
return ( EOF );
}
YY_NEW_FILE;
#ifdef __cplusplus
return ( yyinput() );
#else
return ( input() );
#endif
}
break;
case EOB_ACT_CONTINUE_SCAN:
yy_c_buf_p = yytext + YY_MORE_ADJ;
break;
case EOB_ACT_LAST_MATCH:
#ifdef __cplusplus
YY_FATAL_ERROR( "unexpected last match in yyinput()" );
#else
YY_FATAL_ERROR( "unexpected last match in input()" );
#endif
}
}
}
c = *yy_c_buf_p;
yy_hold_char = *++yy_c_buf_p;
return ( c );
}
#ifdef YY_USE_PROTOS
void yyrestart( FILE *input_file )
#else
void yyrestart( input_file )
FILE *input_file;
#endif
{
yy_init_buffer( yy_current_buffer, input_file );
yy_load_buffer_state();
}
#ifdef YY_USE_PROTOS
void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
#else
void yy_switch_to_buffer( new_buffer )
YY_BUFFER_STATE new_buffer;
#endif
{
if ( yy_current_buffer == new_buffer )
return;
if ( yy_current_buffer )
{
/* flush out information for old buffer */
*yy_c_buf_p = yy_hold_char;
yy_current_buffer->yy_buf_pos = yy_c_buf_p;
yy_current_buffer->yy_n_chars = yy_n_chars;
}
yy_current_buffer = new_buffer;
yy_load_buffer_state();
/* we don't actually know whether we did this switch during
* EOF (yywrap()) processing, but the only time this flag
* is looked at is after yywrap() is called, so it's safe
* to go ahead and always set it.
*/
yy_did_buffer_switch_on_eof = 1;
}
#ifdef YY_USE_PROTOS
void yy_load_buffer_state( void )
#else
void yy_load_buffer_state()
#endif
{
yy_n_chars = yy_current_buffer->yy_n_chars;
yytext = yy_c_buf_p = yy_current_buffer->yy_buf_pos;
yyin = yy_current_buffer->yy_input_file;
yy_hold_char = *yy_c_buf_p;
}
#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_create_buffer( FILE *file, int size )
#else
YY_BUFFER_STATE yy_create_buffer( file, size )
FILE *file;
int size;
#endif
{
YY_BUFFER_STATE b;
b = (YY_BUFFER_STATE) malloc( sizeof( struct yy_buffer_state ) );
if ( ! b )
YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
b->yy_buf_size = size;
/* yy_ch_buf has to be 2 characters longer than the size given because
* we need to put in 2 end-of-buffer characters.
*/
b->yy_ch_buf = (YY_CHAR *) malloc( (unsigned) (b->yy_buf_size + 2) );
if ( ! b->yy_ch_buf )
YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
yy_init_buffer( b, file );
return ( b );
}
#ifdef YY_USE_PROTOS
void yy_delete_buffer( YY_BUFFER_STATE b )
#else
void yy_delete_buffer( b )
YY_BUFFER_STATE b;
#endif
{
if ( b == yy_current_buffer )
yy_current_buffer = (YY_BUFFER_STATE) 0;
free( (char *) b->yy_ch_buf );
free( (char *) b );
}
#ifdef YY_USE_PROTOS
void yy_init_buffer( YY_BUFFER_STATE b, FILE *file )
#else
void yy_init_buffer( b, file )
YY_BUFFER_STATE b;
FILE *file;
#endif
{
b->yy_input_file = file;
/* we put in the '\n' and start reading from [1] so that an
* initial match-at-newline will be true.
*/
b->yy_ch_buf[0] = '\n';
b->yy_n_chars = 1;
/* we always need two end-of-buffer characters. The first causes
* a transition to the end-of-buffer state. The second causes
* a jam in that state.
*/
b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
b->yy_ch_buf[2] = YY_END_OF_BUFFER_CHAR;
b->yy_buf_pos = &b->yy_ch_buf[1];
b->yy_eof_status = EOF_NOT_SEEN;
}
# line 178 "scan.l"
/* This is the way to get multiple files input into lex. */
int
yywrap()
{
if (!open_new_file ()) return (1); /* EOF on standard in. */
return (0); /* We have more input. */
}
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