diff options
author | Will Estes <westes575@gmail.com> | 2014-06-17 09:42:24 -0400 |
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committer | Will Estes <westes575@gmail.com> | 2014-11-12 05:14:28 -0500 |
commit | e98b2df022fd47b62af35aebd3053f6e218f9926 (patch) | |
tree | d1dc55fe0e21e2c2c02be6e6a9f3b1bcbab61596 /tests/include_by_buffer.direct.l | |
parent | 75633654139bdd6ebe4569cd976698fd78469f78 (diff) |
refactor include_by_* tests for new test suite layout
Diffstat (limited to 'tests/include_by_buffer.direct.l')
-rw-r--r-- | tests/include_by_buffer.direct.l | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/tests/include_by_buffer.direct.l b/tests/include_by_buffer.direct.l new file mode 100644 index 0000000..4dc0091 --- /dev/null +++ b/tests/include_by_buffer.direct.l @@ -0,0 +1,102 @@ +/* + * This file is part of flex. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions +f * 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. + * + * Neither the name of the University 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE. + */ + +%{ +/* A scanner file to build "scanner.c". + Input language is any text. + "#include <filename>" causes a buffer switch. + */ +#include <stdio.h> +#include <stdlib.h> +#include "config.h" +%} + +%option 8bit prefix="test" +%option nounput nomain noyywrap +%option warn + +%x GET_FILENAME +%{ + +#define MAX_INCLUDE_DEPTH 10 +YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; +int include_stack_ptr = 0; +%} +%% + +<INITIAL>{ +^"#include"[[:blank:]]+"<" { BEGIN(GET_FILENAME); } +.|\n { ECHO; } +} + +<GET_FILENAME>{ +[[:alnum:]_.-]+> { + /* recurse */ + yytext[yyleng-1]='\0'; + include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER; + if((yyin=fopen(yytext,"r"))==NULL) { + fprintf(stderr,"*** Error: Could not open include file \"%s\".\n",yytext); + yyterminate(); + } + yy_switch_to_buffer( yy_create_buffer( yyin, YY_BUF_SIZE )); + BEGIN(0); + } +.|\n { + fprintf(stderr,"Invalid input \"%s\".\n", yytext); + yyterminate(); + } +} + +<<EOF>> { + if ( --include_stack_ptr < 0 ) { + yyterminate(); + } + else { + fclose(yyin); + yy_delete_buffer( YY_CURRENT_BUFFER ); + yy_switch_to_buffer( include_stack[include_stack_ptr] ); + } + } + +%% + +int main(int argc, char** argv); + +int +main ( int argc, char** argv ) +{ + FILE * fp; + if( argc != 2 ) { + fprintf(stderr,"*** Error: Must specify one filename.\n"); + exit(-1); + } + if((fp=fopen(argv[1],"r"))==NULL) { + fprintf(stderr,"*** Error: fopen(%s) failed.\n",argv[1]); + exit(-1); + } + yyin = fp; + yyout = stdout; + yylex(); + printf("TEST RETURNING OK.\n"); + return 0; +} |