src/usr.bin/compile_et/et_lex.lex.l - diff

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Diff for /src/usr.bin/compile_et/Attic/et_lex.lex.l between version 1.2 and 1.3

-version 1.2, 1998/05/13 17:54:22
+version 1.3, 2000/02/19 12:07:19
 Line 1
 Line 1
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  %{
-   unsigned lineno = 1;
+ /*
- %}
+  * Copyright (c) 1998 Kungliga Tekniska Högskolan
+  * (Royal Institute of Technology, Stockholm, Sweden).
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without
+  * modification, are permitted provided that the following conditions
+  * are met:
+  *
+  * 1. Redistributions of source code must retain the above copyright
+  *    notice, this list of conditions and the following disclaimer.
+  *
+  * 2. 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.
+  *
+  * 3. All advertising materials mentioning features or use of this software
+  *    must display the following acknowledgement:
+  *      This product includes software developed by Kungliga Tekniska
+  *      Högskolan and its contributors.
+  *
+  * 4. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
+  */
- PC      [^\"]
+ /*
- AN      [A-Z_a-z0-9]
+  * This is to handle the definition of this symbol in some AIX
- %%
+  * headers, which will conflict with the definition that lex will
+  * generate for it.  It's only a problem for AIX lex.
+  */
- error_table     return ERROR_TABLE;
+ #undef ECHO
- et              return ERROR_TABLE;
- error_code      return ERROR_CODE_ENTRY;
- ec              return ERROR_CODE_ENTRY;
- end             return END;
- [\t ]           ;
+ #include "compile_et.h"
- \n              ++lineno;
+ #include "error_table.h"
- \"{PC}*\"       { register char *p; yylval.dynstr = ds(yytext+1);
+ /* RCSID("$KTH: lex.l,v 1.4 1998/11/20 05:58:52 assar Exp $"); */
-                   if ((p = strrchr(yylval.dynstr, '"')) != NULL) *p = '\0';
-                   return QUOTED_STRING;
-                 }
- {AN}*   { yylval.dynstr = ds(yytext); return STRING; }
+ static unsigned lineno = 1;
+ void error_message(char *, ...);
+ int getstring(void);
- #.*\n           ++lineno;
+ %}
- .               { return (*yytext); }
  %%
- #ifndef lint
+ et                      { return ET; }
- static char rcsid_et_lex_lex_l[] = "$Id$";
+ error_table             { return ET; }
+ ec                      { return EC; }
+ error_code              { return EC; }
+ prefix                  { return PREFIX; }
+ index                   { return INDEX; }
+ id                      { return ID; }
+ end                     { return END; }
+ [0-9]+                  { yylval.number = atoi(yytext); return NUMBER; }
+ #[^\n]*                 ;
+ [ \t]                   ;
+ \n                      { lineno++; }
+ \"                      { return getstring(); }
+ [a-zA-Z0-9_]+           { yylval.string = strdup(yytext); return STRING; }
+ .                       { return *yytext; }
+ %%
+ #ifndef yywrap /* XXX */
+ int
+ yywrap ()
+ {
+      return 1;
+ }
  #endif
+ int
+ getstring(void)
+ {
+     char x[128];
+     int i = 0;
+     int c;
+     int quote = 0;
+     while((c = input()) != EOF){
+         if(quote) {
+             x[i++] = c;
+             quote = 0;
+             continue;
+         }
+         if(c == '\n'){
+             error_message("unterminated string");
+             lineno++;
+             break;
+         }
+         if(c == '\\'){
+             quote++;
+             continue;
+         }
+         if(c == '\"')
+             break;
+         x[i++] = c;
+     }
+     x[i] = '\0';
+     yylval.string = strdup(x);
+     return STRING;
+ }
+ void
+ error_message (char *format, ...)
+ {
+      va_list args;
+      va_start (args, format);
+      fprintf (stderr, "%s:%d:", filename, lineno);
+      vfprintf (stderr, format, args);
+      va_end (args);
+      numerror++;
+ }