%{ /* * 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. */ /* * 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. */ #undef ECHO #include "compile_et.h" #include "error_table.h" /* RCSID("$KTH: lex.l,v 1.4 1998/11/20 05:58:52 assar Exp $"); */ static unsigned lineno = 1; void error_message(char *, ...); int getstring(void); int yylex(void); %} %% et { return ET; } 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++; }