1 files changed, 97 insertions, 0 deletions
diff --git a/tests/rescan_r.direct.l b/tests/rescan_r.direct.l
new file mode 100644
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+++ b/tests/rescan_r.direct.l
@@ -0,0 +1,97 @@
+/*
+ * 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
+ * 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 template scanner file to build "scanner.c". */
+#include <stdio.h>
+#include <stdlib.h>
+%}
+
+%option 8bit prefix="test"
+%option nounput nomain noyywrap noinput reentrant
+%option warn stack never-interactive
+%x STATE_1
+
+%%
+
+<INITIAL>{
+0              yy_push_state (STATE_1, yyscanner);
+.|\n           return 1;
+}
+<STATE_1>{
+1              yy_pop_state(yyscanner);
+.|\n           return yy_top_state(yyscanner) + 1;
+}
+
+%%
+
+int
+main (int argc, char* const argv[])
+{
+    FILE* fp;
+    int i;
+    yyscan_t  yyscanner;
+
+    (void)argc;
+
+    if ((fp = fopen(argv[1],"r")) == NULL){
+        perror("Failed to open input file.");
+        return 1;
+    }
+
+    printf("Test 1: Reusing same scanner.\n");
+    yylex_init( &yyscanner );
+    yyset_out ( stdout, yyscanner);
+
+    for (i=0; i <  4; ++i){
+
+        rewind(fp);
+        yyset_in  ( fp, yyscanner);
+
+        while( yylex(yyscanner) )
+            ;
+    }
+    yylex_destroy( yyscanner );
+    printf("Test 1 OK\n\n");
+
+    printf("Test 2: Rescanning with new scanner each time.\n");
+
+    memset(&yyscanner,0,sizeof(yyscanner)); // Just to be clean about it.
+
+    for (i=0; i < 4; ++i){
+        yyscan_t  s;
+        yylex_init( &s );
+        yyset_out ( stdout, s);
+        rewind(fp);
+        yyset_in  ( fp, s);
+
+        while( yylex(s) )
+            ;
+        yylex_destroy( s );
+    }
+    printf("Test 2 OK\n\n");
+
+
+    printf("TEST RETURNING OK.\n");
+    return 0;
+}