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Cleanup the lexor state information when done parsing. 

This patch frees the lexor buffers when we are done parsing
the input file.
This commit is contained in:
Cary R 2009-01-14 10:26:58 -08:00 committed by Stephen Williams
parent c6336d621e
commit eddfa12569
3 changed files with 21 additions and 3 deletions
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15
vvp/lexor.lex
View File

@ -264,3 +264,18 @@ int yywrap()
{
return -1;
}
/*
* Modern version of flex (>=2.5.9) can clean up the scanner data.
*/
void destroy_lexor()
{
# ifdef FLEX_SCANNER
# if YY_FLEX_MAJOR_VERSION >= 2 && YY_FLEX_MINOR_VERSION >= 5
# if defined(YY_FLEX_SUBMINOR_VERSION) && YY_FLEX_SUBMINOR_VERSION >= 9
yylex_destroy();
# endif
# endif
# endif
}

5
vvp/main.cc
View File

@ -342,8 +342,9 @@ int main(int argc, char*argv[])
for (unsigned idx = 0 ; idx < module_cnt ; idx += 1)
vpip_load_module(module_tab[idx]);
if (int rc = compile_design(design_path))
return rc;
int ret_cd = compile_design(design_path);
destroy_lexor();
if (ret_cd) return ret_cd;
if (!have_ivl_version) {
if (verbose_flag) vpi_mcd_printf(1, "... ");

4
vvp/parse_misc.h
View File

@ -1,7 +1,7 @@
#ifndef __parse_misc_H
#define __parse_misc_H
/*
* Copyright (c) 2001-2008 Stephen Williams (steve@icarus.com)
* Copyright (c) 2001-2009 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
@ -39,6 +39,8 @@ extern void verify_version(char *ivl_ver, char* commit);
extern int yylex(void);
extern void yyerror(const char*msg);
extern void destroy_lexor();
/*
* This is the path of the current source file.
*/