qse/ase/awk/awk.c

269 lines
6.6 KiB
C

/*
* $Id: awk.c,v 1.109 2007-02-23 08:17:48 bacon Exp $
*
* {License}
*/
#if defined(__BORLANDC__)
#pragma hdrstop
#define Library
#endif
#include <ase/awk/awk_i.h>
static void __free_afn (void* awk, void* afn);
ase_awk_t* ase_awk_open (
const ase_awk_prmfns_t* prmfns, void* custom_data, int* errnum)
{
ase_awk_t* awk;
if (prmfns == ASE_NULL ||
prmfns->mmgr.malloc == ASE_NULL ||
prmfns->mmgr.free == ASE_NULL ||
prmfns->ccls.is_upper == ASE_NULL ||
prmfns->ccls.is_lower == ASE_NULL ||
prmfns->ccls.is_alpha == ASE_NULL ||
prmfns->ccls.is_digit == ASE_NULL ||
prmfns->ccls.is_xdigit == ASE_NULL ||
prmfns->ccls.is_alnum == ASE_NULL ||
prmfns->ccls.is_space == ASE_NULL ||
prmfns->ccls.is_print == ASE_NULL ||
prmfns->ccls.is_graph == ASE_NULL ||
prmfns->ccls.is_cntrl == ASE_NULL ||
prmfns->ccls.is_punct == ASE_NULL ||
prmfns->ccls.to_upper == ASE_NULL ||
prmfns->ccls.to_lower == ASE_NULL ||
prmfns->misc.pow == ASE_NULL ||
prmfns->misc.sprintf == ASE_NULL ||
prmfns->misc.aprintf == ASE_NULL ||
prmfns->misc.dprintf == ASE_NULL ||
prmfns->misc.abort == ASE_NULL)
{
*errnum = ASE_AWK_ESYSFNS;
return ASE_NULL;
}
#if defined(_WIN32) && defined(_MSC_VER) && defined(_DEBUG)
awk = (ase_awk_t*) malloc (ASE_SIZEOF(ase_awk_t));
#else
awk = (ase_awk_t*) prmfns->mmgr.malloc (
&prmfns->mmgr, ASE_SIZEOF(ase_awk_t));
#endif
if (awk == ASE_NULL)
{
*errnum = ASE_AWK_ENOMEM;
return ASE_NULL;
}
/* it uses the built-in ase_awk_memset because awk is not
* fully initialized yet */
ase_memset (awk, 0, ASE_SIZEOF(ase_awk_t));
ase_memcpy (&awk->prmfns, prmfns, ASE_SIZEOF(awk->prmfns));
if (ase_str_open (
&awk->token.name, 128, &awk->prmfns.mmgr) == ASE_NULL)
{
ASE_AWK_FREE (awk, awk);
*errnum = ASE_AWK_ENOMEM;
return ASE_NULL;
}
/* TODO: initial map size?? */
if (ase_awk_map_open (
&awk->tree.afns, awk, 256, __free_afn, awk) == ASE_NULL)
{
ase_str_close (&awk->token.name);
ASE_AWK_FREE (awk, awk);
*errnum = ASE_AWK_ENOMEM;
return ASE_NULL;
}
if (ase_awk_tab_open (&awk->parse.globals, awk) == ASE_NULL)
{
ase_str_close (&awk->token.name);
ase_awk_map_close (&awk->tree.afns);
ASE_AWK_FREE (awk, awk);
*errnum = ASE_AWK_ENOMEM;
return ASE_NULL;
}
if (ase_awk_tab_open (&awk->parse.locals, awk) == ASE_NULL)
{
ase_str_close (&awk->token.name);
ase_awk_map_close (&awk->tree.afns);
ase_awk_tab_close (&awk->parse.globals);
ASE_AWK_FREE (awk, awk);
*errnum = ASE_AWK_ENOMEM;
return ASE_NULL;
}
if (ase_awk_tab_open (&awk->parse.params, awk) == ASE_NULL)
{
ase_str_close (&awk->token.name);
ase_awk_map_close (&awk->tree.afns);
ase_awk_tab_close (&awk->parse.globals);
ase_awk_tab_close (&awk->parse.locals);
ASE_AWK_FREE (awk, awk);
*errnum = ASE_AWK_ENOMEM;
return ASE_NULL;
}
awk->option = 0;
awk->errnum = ASE_AWK_ENOERR;
awk->errlin = 0;
awk->parse.nlocals_max = 0;
awk->tree.nglobals = 0;
awk->tree.nbglobals = 0;
awk->tree.begin = ASE_NULL;
awk->tree.end = ASE_NULL;
awk->tree.chain = ASE_NULL;
awk->tree.chain_tail = ASE_NULL;
awk->tree.chain_size = 0;
awk->token.prev.type = 0;
awk->token.prev.line = 0;
awk->token.prev.column = 0;
awk->token.type = 0;
awk->token.line = 0;
awk->token.column = 0;
awk->src.lex.curc = ASE_CHAR_EOF;
awk->src.lex.ungotc_count = 0;
awk->src.lex.line = 1;
awk->src.lex.column = 1;
awk->src.shared.buf_pos = 0;
awk->src.shared.buf_len = 0;
awk->bfn.sys = ASE_NULL;
awk->bfn.user = ASE_NULL;
awk->parse.depth.cur.block = 0;
awk->parse.depth.cur.loop = 0;
awk->parse.depth.cur.expr = 0;
ase_awk_setmaxdepth (awk, ASE_AWK_DEPTH_BLOCK_PARSE, 0);
ase_awk_setmaxdepth (awk, ASE_AWK_DEPTH_BLOCK_RUN, 0);
ase_awk_setmaxdepth (awk, ASE_AWK_DEPTH_EXPR_PARSE, 0);
ase_awk_setmaxdepth (awk, ASE_AWK_DEPTH_EXPR_RUN, 0);
ase_awk_setmaxdepth (awk, ASE_AWK_DEPTH_REX_BUILD, 0);
ase_awk_setmaxdepth (awk, ASE_AWK_DEPTH_REX_MATCH, 0);
awk->run.count = 0;
awk->run.ptr = ASE_NULL;
awk->custom_data = custom_data;
return awk;
}
static void __free_afn (void* owner, void* afn)
{
ase_awk_afn_t* f = (ase_awk_afn_t*)afn;
/* f->name doesn't have to be freed */
/*ASE_AWK_FREE ((ase_awk_t*)owner, f->name);*/
ase_awk_clrpt ((ase_awk_t*)owner, f->body);
ASE_AWK_FREE ((ase_awk_t*)owner, f);
}
int ase_awk_close (ase_awk_t* awk)
{
if (ase_awk_clear (awk) == -1) return -1;
ase_awk_clrbfn (awk);
ASE_AWK_ASSERT (awk, awk->run.count == 0 && awk->run.ptr == ASE_NULL);
ase_awk_map_close (&awk->tree.afns);
ase_awk_tab_close (&awk->parse.globals);
ase_awk_tab_close (&awk->parse.locals);
ase_awk_tab_close (&awk->parse.params);
ase_str_close (&awk->token.name);
/* ASE_AWK_ALLOC, ASE_AWK_FREE, etc can not be used
* from the next line onwards */
ASE_AWK_FREE (awk, awk);
return 0;
}
int ase_awk_clear (ase_awk_t* awk)
{
/* you should stop all running instances beforehand */
if (awk->run.ptr != ASE_NULL)
{
awk->errnum = ASE_AWK_ERUNNING;
return -1;
}
ase_memset (&awk->src.ios, 0, ASE_SIZEOF(awk->src.ios));
awk->src.lex.curc = ASE_CHAR_EOF;
awk->src.lex.ungotc_count = 0;
awk->src.lex.line = 1;
awk->src.lex.column = 1;
awk->src.shared.buf_pos = 0;
awk->src.shared.buf_len = 0;
ase_awk_tab_clear (&awk->parse.globals);
ase_awk_tab_clear (&awk->parse.locals);
ase_awk_tab_clear (&awk->parse.params);
awk->parse.nlocals_max = 0;
awk->parse.depth.cur.block = 0;
awk->parse.depth.cur.loop = 0;
awk->parse.depth.cur.expr = 0;
/* clear parse trees */
awk->tree.ok = 0;
awk->tree.nbglobals = 0;
awk->tree.nglobals = 0;
ase_awk_map_clear (&awk->tree.afns);
if (awk->tree.begin != ASE_NULL)
{
ASE_AWK_ASSERT (awk, awk->tree.begin->next == ASE_NULL);
ase_awk_clrpt (awk, awk->tree.begin);
awk->tree.begin = ASE_NULL;
}
if (awk->tree.end != ASE_NULL)
{
ASE_AWK_ASSERT (awk, awk->tree.end->next == ASE_NULL);
ase_awk_clrpt (awk, awk->tree.end);
awk->tree.end = ASE_NULL;
}
while (awk->tree.chain != ASE_NULL)
{
ase_awk_chain_t* next = awk->tree.chain->next;
if (awk->tree.chain->pattern != ASE_NULL)
ase_awk_clrpt (awk, awk->tree.chain->pattern);
if (awk->tree.chain->action != ASE_NULL)
ase_awk_clrpt (awk, awk->tree.chain->action);
ASE_AWK_FREE (awk, awk->tree.chain);
awk->tree.chain = next;
}
awk->tree.chain_tail = ASE_NULL;
awk->tree.chain_size = 0;
return 0;
}
int ase_awk_getoption (ase_awk_t* awk)
{
return awk->option;
}
void ase_awk_setoption (ase_awk_t* awk, int opt)
{
awk->option = opt;
}
void* ase_awk_getcustomdata (ase_awk_t* awk)
{
return awk->custom_data;
}