qse/ase/awk/awk.c

254 lines
6.3 KiB
C

/*
* $Id: awk.c,v 1.5 2007/05/06 10:38:22 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)
{
ase_awk_t* awk;
ASE_ASSERT (prmfns != ASE_NULL);
ASE_ASSERT (prmfns->mmgr.malloc != ASE_NULL &&
prmfns->mmgr.free != ASE_NULL);
ASE_ASSERT (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);
ASE_ASSERT (prmfns->misc.pow != ASE_NULL &&
prmfns->misc.sprintf != ASE_NULL &&
prmfns->misc.dprintf != ASE_NULL);
/* use ASE_MALLOC instead of ASE_AWK_MALLOC because
* the awk object has not been initialized yet */
awk = ASE_MALLOC (&prmfns->mmgr, ASE_SIZEOF(ase_awk_t));
if (awk == ASE_NULL) 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);
return ASE_NULL;
}
/* TODO: initial map size?? */
awk->tree.afns = ase_awk_map_open (awk, 256, free_afn, awk);
if (awk->tree.afns == ASE_NULL)
{
ase_str_close (&awk->token.name);
ASE_AWK_FREE (awk, awk);
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);
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);
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);
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->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)
{
ase_size_t i;
if (ase_awk_clear (awk) == -1) return -1;
ase_awk_clrbfn (awk);
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);
for (i = 0; i < ASE_COUNTOF(awk->errstr); i++)
{
if (awk->errstr[i] != ASE_NULL)
{
ASE_AWK_FREE (awk, awk->errstr[i]);
awk->errstr[i] = ASE_NULL;
}
}
/* 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)
{
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;
awk->tree.cur_afn.ptr = ASE_NULL;
awk->tree.cur_afn.len = 0;
ase_awk_map_clear (awk->tree.afns);
if (awk->tree.begin != ASE_NULL)
{
ASE_ASSERT (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_ASSERT (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;
}