Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-12-28 10:04:49 +00:00
Code Issues Projects Releases Packages Wiki Activity
reactos/sdk/tools/wpp/ppy.y

705 lines
18 KiB
Text
Raw Blame History

/*
* Wrc preprocessor syntax analysis
*
* Copyright 1999-2000 Bertho A. Stultiens (BS)
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* History:
* 24-Apr-2000 BS Restructured the lot to fit the new scanner
* and reintegrate into the wine-tree.
* 01-Jan-2000 BS FIXME: win16 preprocessor calculates with
* 16 bit ints and overflows...?
* 26-Dec-1999 BS Started this file
*
*/
%{
#include "config.h"
#include "wine/port.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
#include <string.h>
#include "wpp_private.h"
#define UNARY_OP(r, v, OP) \
switch(v.type) \
{ \
case cv_sint: r.val.si = OP v.val.si; break; \
case cv_uint: r.val.ui = OP v.val.ui; break; \
case cv_slong: r.val.sl = OP v.val.sl; break; \
case cv_ulong: r.val.ul = OP v.val.ul; break; \
case cv_sll: r.val.sll = OP v.val.sll; break; \
case cv_ull: r.val.ull = OP v.val.ull; break; \
}
#define cv_signed(v) ((v.type & FLAG_SIGNED) != 0)
#define BIN_OP_INT(r, v1, v2, OP) \
r.type = v1.type; \
if(cv_signed(v1) && cv_signed(v2)) \
r.val.si = v1.val.si OP v2.val.si; \
else if(cv_signed(v1) && !cv_signed(v2)) \
r.val.si = v1.val.si OP (signed) v2.val.ui; \
else if(!cv_signed(v1) && cv_signed(v2)) \
r.val.si = (signed) v1.val.ui OP v2.val.si; \
else \
r.val.ui = v1.val.ui OP v2.val.ui;
#define BIN_OP_LONG(r, v1, v2, OP) \
r.type = v1.type; \
if(cv_signed(v1) && cv_signed(v2)) \
r.val.sl = v1.val.sl OP v2.val.sl; \
else if(cv_signed(v1) && !cv_signed(v2)) \
r.val.sl = v1.val.sl OP (signed long) v2.val.ul; \
else if(!cv_signed(v1) && cv_signed(v2)) \
r.val.sl = (signed long) v1.val.ul OP v2.val.sl; \
else \
r.val.ul = v1.val.ul OP v2.val.ul;
#define BIN_OP_LONGLONG(r, v1, v2, OP) \
r.type = v1.type; \
if(cv_signed(v1) && cv_signed(v2)) \
r.val.sll = v1.val.sll OP v2.val.sll; \
else if(cv_signed(v1) && !cv_signed(v2)) \
r.val.sll = v1.val.sll OP (wrc_sll_t) v2.val.ull; \
else if(!cv_signed(v1) && cv_signed(v2)) \
r.val.sll = (wrc_sll_t) v1.val.ull OP v2.val.sll; \
else \
r.val.ull = v1.val.ull OP v2.val.ull;
#define BIN_OP(r, v1, v2, OP) \
switch(v1.type & SIZE_MASK) \
{ \
case SIZE_INT: BIN_OP_INT(r, v1, v2, OP); break; \
case SIZE_LONG: BIN_OP_LONG(r, v1, v2, OP); break; \
case SIZE_LONGLONG: BIN_OP_LONGLONG(r, v1, v2, OP); break; \
default: pp_internal_error(__FILE__, __LINE__, "Invalid type indicator (0x%04x)", v1.type); \
}
/*
* Prototypes
*/
static int boolean(cval_t *v);
static void promote_equal_size(cval_t *v1, cval_t *v2);
static void cast_to_sint(cval_t *v);
static void cast_to_uint(cval_t *v);
static void cast_to_slong(cval_t *v);
static void cast_to_ulong(cval_t *v);
static void cast_to_sll(cval_t *v);
static void cast_to_ull(cval_t *v);
static marg_t *new_marg(char *str, def_arg_t type);
static marg_t *add_new_marg(char *str, def_arg_t type);
static int marg_index(char *id);
static mtext_t *new_mtext(char *str, int idx, def_exp_t type);
static mtext_t *combine_mtext(mtext_t *tail, mtext_t *mtp);
static char *merge_text(char *s1, char *s2);
/*
* Local variables
*/
static marg_t **macro_args; /* Macro parameters array while parsing */
static int nmacro_args;
%}
%union{
int sint;
unsigned int uint;
long slong;
unsigned long ulong;
wrc_sll_t sll;
wrc_ull_t ull;
int *iptr;
char *cptr;
cval_t cval;
marg_t *marg;
mtext_t *mtext;
}
%token tRCINCLUDE
%token tIF tIFDEF tIFNDEF tELSE tELIF tENDIF tDEFINED tNL
%token tINCLUDE tLINE tGCCLINE tERROR tWARNING tPRAGMA tPPIDENT
%token tUNDEF tMACROEND tCONCAT tELIPSIS tSTRINGIZE
%token <cptr> tIDENT tLITERAL tMACRO tDEFINE
%token <cptr> tDQSTRING tSQSTRING tIQSTRING
%token <uint> tUINT
%token <sint> tSINT
%token <ulong> tULONG
%token <slong> tSLONG
%token <ull> tULONGLONG
%token <sll> tSLONGLONG
%token <cptr> tRCINCLUDEPATH
%right '?' ':'
%left tLOGOR
%left tLOGAND
%left '|'
%left '^'
%left '&'
%left tEQ tNE
%left '<' tLTE '>' tGTE
%left tLSHIFT tRSHIFT
%left '+' '-'
%left '*' '/'
%right '~' '!'
%type <cval> pp_expr
%type <marg> emargs margs
%type <mtext> opt_mtexts mtexts mtext
%type <sint> allmargs
%type <cptr> opt_text text
/*
**************************************************************************
* The parser starts here
**************************************************************************
*/
%%
pp_file : /* Empty */
| pp_file preprocessor
;
preprocessor
: tINCLUDE tDQSTRING tNL { pp_do_include($2, 1); }
| tINCLUDE tIQSTRING tNL { pp_do_include($2, 0); }
| tIF pp_expr tNL { pp_next_if_state(boolean(&$2)); }
| tIFDEF tIDENT tNL { pp_next_if_state(pplookup($2) != NULL); free($2); }
| tIFNDEF tIDENT tNL {
int t = pplookup($2) == NULL;
if(pp_incl_state.state == 0 && t && !pp_incl_state.seen_junk)
{
pp_incl_state.state = 1;
pp_incl_state.ppp = $2;
pp_incl_state.ifdepth = pp_get_if_depth();
}
else if(pp_incl_state.state != 1)
{
pp_incl_state.state = -1;
free($2);
}
else
free($2);
pp_next_if_state(t);
if(pp_status.debug)
fprintf(stderr, "tIFNDEF: %s:%d: include_state=%d, include_ppp='%s', include_ifdepth=%d\n",
pp_status.input, pp_status.line_number, pp_incl_state.state, pp_incl_state.ppp, pp_incl_state.ifdepth);
}
| tELIF pp_expr tNL {
pp_if_state_t s = pp_pop_if();
switch(s)
{
case if_true:
case if_elif:
pp_push_if(if_elif);
break;
case if_false:
pp_push_if(boolean(&$2) ? if_true : if_false);
break;
case if_ignore:
pp_push_if(if_ignore);
break;
case if_elsetrue:
case if_elsefalse:
ppy_error("#elif cannot follow #else");
break;
case if_error:
break;
default:
pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d) in #elif directive", s);
}
}
| tELSE tNL {
pp_if_state_t s = pp_pop_if();
switch(s)
{
case if_true:
pp_push_if(if_elsefalse);
break;
case if_elif:
pp_push_if(if_elif);
break;
case if_false:
pp_push_if(if_elsetrue);
break;
case if_ignore:
pp_push_if(if_ignore);
break;
case if_elsetrue:
case if_elsefalse:
ppy_error("#else clause already defined");
break;
case if_error:
break;
default:
pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d) in #else directive", s);
}
}
| tENDIF tNL {
if(pp_pop_if() != if_error)
{
if(pp_incl_state.ifdepth == pp_get_if_depth() && pp_incl_state.state == 1)
{
pp_incl_state.state = 2;
pp_incl_state.seen_junk = 0;
}
else if(pp_incl_state.state != 1)
{
pp_incl_state.state = -1;
}
if(pp_status.debug)
fprintf(stderr, "tENDIF: %s:%d: include_state=%d, include_ppp='%s', include_ifdepth=%d\n",
pp_status.input, pp_status.line_number, pp_incl_state.state, pp_incl_state.ppp, pp_incl_state.ifdepth);
}
}
| tUNDEF tIDENT tNL { pp_del_define($2); free($2); }
| tDEFINE opt_text tNL { pp_add_define($1, $2); free($1); free($2); }
| tMACRO res_arg allmargs tMACROEND opt_mtexts tNL {
pp_add_macro($1, macro_args, nmacro_args, $5);
}
| tLINE tSINT tDQSTRING tNL { if($3) pp_writestring("# %d %s\n", $2 , $3); free($3); }
| tGCCLINE tSINT tDQSTRING tNL { if($3) pp_writestring("# %d %s\n", $2 , $3); free($3); }
| tGCCLINE tSINT tDQSTRING tSINT tNL
{ if($3) pp_writestring("# %d %s %d\n", $2, $3, $4); free($3); }
| tGCCLINE tSINT tDQSTRING tSINT tSINT tNL
{ if($3) pp_writestring("# %d %s %d %d\n", $2 ,$3, $4, $5); free($3); }
| tGCCLINE tSINT tDQSTRING tSINT tSINT tSINT tNL
{ if($3) pp_writestring("# %d %s %d %d %d\n", $2 ,$3 ,$4 ,$5, $6); free($3); }
| tGCCLINE tSINT tDQSTRING tSINT tSINT tSINT tSINT tNL
{ if($3) pp_writestring("# %d %s %d %d %d %d\n", $2 ,$3 ,$4 ,$5, $6, $7); free($3); }
| tGCCLINE tNL /* The null-token */
| tERROR opt_text tNL { ppy_error("#error directive: '%s'", $2); free($2); }
| tWARNING opt_text tNL { ppy_warning("#warning directive: '%s'", $2); free($2); }
| tPRAGMA opt_text tNL { pp_writestring("#pragma %s\n", $2 ? $2 : ""); free($2); }
| tPPIDENT opt_text tNL { if(pp_status.pedantic) ppy_warning("#ident ignored (arg: '%s')", $2); free($2); }
| tRCINCLUDE tRCINCLUDEPATH {
if($2)
{
int nl=strlen($2) +3;
char *fn=pp_xmalloc(nl);
if(fn)
{
sprintf(fn,"\"%s\"",$2);
pp_do_include(fn,1);
}
free($2);
}
}
| tRCINCLUDE tDQSTRING {
pp_do_include($2,1);
}
/*| tNL*/
;
opt_text: /* Empty */ { $$ = NULL; }
| text { $$ = $1; }
;
text : tLITERAL { $$ = $1; }
| tDQSTRING { $$ = $1; }
| tSQSTRING { $$ = $1; }
| text tLITERAL { $$ = merge_text($1, $2); }
| text tDQSTRING { $$ = merge_text($1, $2); }
| text tSQSTRING { $$ = merge_text($1, $2); }
;
res_arg : /* Empty */ { macro_args = NULL; nmacro_args = 0; }
;
allmargs: /* Empty */ { $$ = 0; macro_args = NULL; nmacro_args = 0; }
| emargs { $$ = nmacro_args; }
;
emargs : margs { $$ = $1; }
| margs ',' tELIPSIS { $$ = add_new_marg(NULL, arg_list); nmacro_args *= -1; }
;
margs : margs ',' tIDENT { $$ = add_new_marg($3, arg_single); }
| tIDENT { $$ = add_new_marg($1, arg_single); }
;
opt_mtexts
: /* Empty */ { $$ = NULL; }
| mtexts {
for($$ = $1; $$ && $$->prev; $$ = $$->prev)
;
}
;
mtexts : mtext { $$ = $1; }
| mtexts mtext { $$ = combine_mtext($1, $2); }
;
mtext : tLITERAL { $$ = new_mtext($1, 0, exp_text); }
| tDQSTRING { $$ = new_mtext($1, 0, exp_text); }
| tSQSTRING { $$ = new_mtext($1, 0, exp_text); }
| tCONCAT { $$ = new_mtext(NULL, 0, exp_concat); }
| tSTRINGIZE tIDENT {
int mat = marg_index($2);
if(mat < 0)
ppy_error("Stringification identifier must be an argument parameter");
else
$$ = new_mtext(NULL, mat, exp_stringize);
}
| tIDENT {
int mat = marg_index($1);
if(mat >= 0)
$$ = new_mtext(NULL, mat, exp_subst);
else if($1)
$$ = new_mtext($1, 0, exp_text);
}
;
pp_expr : tSINT { $$.type = cv_sint; $$.val.si = $1; }
| tUINT { $$.type = cv_uint; $$.val.ui = $1; }
| tSLONG { $$.type = cv_slong; $$.val.sl = $1; }
| tULONG { $$.type = cv_ulong; $$.val.ul = $1; }
| tSLONGLONG { $$.type = cv_sll; $$.val.sll = $1; }
| tULONGLONG { $$.type = cv_ull; $$.val.ull = $1; }
| tDEFINED tIDENT { $$.type = cv_sint; $$.val.si = pplookup($2) != NULL; }
| tDEFINED '(' tIDENT ')' { $$.type = cv_sint; $$.val.si = pplookup($3) != NULL; }
| tIDENT { $$.type = cv_sint; $$.val.si = 0; }
| pp_expr tLOGOR pp_expr { $$.type = cv_sint; $$.val.si = boolean(&$1) || boolean(&$3); }
| pp_expr tLOGAND pp_expr { $$.type = cv_sint; $$.val.si = boolean(&$1) && boolean(&$3); }
| pp_expr tEQ pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, ==); }
| pp_expr tNE pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, !=); }
| pp_expr '<' pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, <); }
| pp_expr '>' pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, >); }
| pp_expr tLTE pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, <=); }
| pp_expr tGTE pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, >=); }
| pp_expr '+' pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, +); }
| pp_expr '-' pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, -); }
| pp_expr '^' pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, ^); }
| pp_expr '&' pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, &); }
| pp_expr '|' pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, |); }
| pp_expr '*' pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, *); }
| pp_expr '/' pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, /); }
| pp_expr tLSHIFT pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, <<); }
| pp_expr tRSHIFT pp_expr { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, >>); }
| '+' pp_expr { $$ = $2; }
| '-' pp_expr { UNARY_OP($$, $2, -); }
| '~' pp_expr { UNARY_OP($$, $2, ~); }
| '!' pp_expr { $$.type = cv_sint; $$.val.si = !boolean(&$2); }
| '(' pp_expr ')' { $$ = $2; }
| pp_expr '?' pp_expr ':' pp_expr { $$ = boolean(&$1) ? $3 : $5; }
;
%%
/*
**************************************************************************
* Support functions
**************************************************************************
*/
static void cast_to_sint(cval_t *v)
{
switch(v->type)
{
case cv_sint: break;
case cv_uint: break;
case cv_slong: v->val.si = v->val.sl; break;
case cv_ulong: v->val.si = v->val.ul; break;
case cv_sll: v->val.si = v->val.sll; break;
case cv_ull: v->val.si = v->val.ull; break;
}
v->type = cv_sint;
}
static void cast_to_uint(cval_t *v)
{
switch(v->type)
{
case cv_sint: break;
case cv_uint: break;
case cv_slong: v->val.ui = v->val.sl; break;
case cv_ulong: v->val.ui = v->val.ul; break;
case cv_sll: v->val.ui = v->val.sll; break;
case cv_ull: v->val.ui = v->val.ull; break;
}
v->type = cv_uint;
}
static void cast_to_slong(cval_t *v)
{
switch(v->type)
{
case cv_sint: v->val.sl = v->val.si; break;
case cv_uint: v->val.sl = v->val.ui; break;
case cv_slong: break;
case cv_ulong: break;
case cv_sll: v->val.sl = v->val.sll; break;
case cv_ull: v->val.sl = v->val.ull; break;
}
v->type = cv_slong;
}
static void cast_to_ulong(cval_t *v)
{
switch(v->type)
{
case cv_sint: v->val.ul = v->val.si; break;
case cv_uint: v->val.ul = v->val.ui; break;
case cv_slong: break;
case cv_ulong: break;
case cv_sll: v->val.ul = v->val.sll; break;
case cv_ull: v->val.ul = v->val.ull; break;
}
v->type = cv_ulong;
}
static void cast_to_sll(cval_t *v)
{
switch(v->type)
{
case cv_sint: v->val.sll = v->val.si; break;
case cv_uint: v->val.sll = v->val.ui; break;
case cv_slong: v->val.sll = v->val.sl; break;
case cv_ulong: v->val.sll = v->val.ul; break;
case cv_sll: break;
case cv_ull: break;
}
v->type = cv_sll;
}
static void cast_to_ull(cval_t *v)
{
switch(v->type)
{
case cv_sint: v->val.ull = v->val.si; break;
case cv_uint: v->val.ull = v->val.ui; break;
case cv_slong: v->val.ull = v->val.sl; break;
case cv_ulong: v->val.ull = v->val.ul; break;
case cv_sll: break;
case cv_ull: break;
}
v->type = cv_ull;
}
static void promote_equal_size(cval_t *v1, cval_t *v2)
{
#define cv_sizeof(v) ((int)(v->type & SIZE_MASK))
int s1 = cv_sizeof(v1);
int s2 = cv_sizeof(v2);
#undef cv_sizeof
if(s1 == s2)
return;
else if(s1 > s2)
{
switch(v1->type)
{
case cv_sint: cast_to_sint(v2); break;
case cv_uint: cast_to_uint(v2); break;
case cv_slong: cast_to_slong(v2); break;
case cv_ulong: cast_to_ulong(v2); break;
case cv_sll: cast_to_sll(v2); break;
case cv_ull: cast_to_ull(v2); break;
}
}
else
{
switch(v2->type)
{
case cv_sint: cast_to_sint(v1); break;
case cv_uint: cast_to_uint(v1); break;
case cv_slong: cast_to_slong(v1); break;
case cv_ulong: cast_to_ulong(v1); break;
case cv_sll: cast_to_sll(v1); break;
case cv_ull: cast_to_ull(v1); break;
}
}
}
static int boolean(cval_t *v)
{
switch(v->type)
{
case cv_sint: return v->val.si != (int)0;
case cv_uint: return v->val.ui != (unsigned int)0;
case cv_slong: return v->val.sl != (long)0;
case cv_ulong: return v->val.ul != (unsigned long)0;
case cv_sll: return v->val.sll != (wrc_sll_t)0;
case cv_ull: return v->val.ull != (wrc_ull_t)0;
}
return 0;
}
static marg_t *new_marg(char *str, def_arg_t type)
{
marg_t *ma = pp_xmalloc(sizeof(marg_t));
if(!ma)
return NULL;
ma->arg = str;
ma->type = type;
ma->nnl = 0;
return ma;
}
static marg_t *add_new_marg(char *str, def_arg_t type)
{
marg_t **new_macro_args;
marg_t *ma;
if(!str)
return NULL;
new_macro_args = pp_xrealloc(macro_args, (nmacro_args+1) * sizeof(macro_args[0]));
if(!new_macro_args)
return NULL;
macro_args = new_macro_args;
ma = new_marg(str, type);
if(!ma)
return NULL;
macro_args[nmacro_args] = ma;
nmacro_args++;
return ma;
}
static int marg_index(char *id)
{
int t;
if(!id)
return -1;
for(t = 0; t < nmacro_args; t++)
{
if(!strcmp(id, macro_args[t]->arg))
break;
}
return t < nmacro_args ? t : -1;
}
static mtext_t *new_mtext(char *str, int idx, def_exp_t type)
{
mtext_t *mt = pp_xmalloc(sizeof(mtext_t));
if(!mt)
return NULL;
if(str == NULL)
mt->subst.argidx = idx;
else
mt->subst.text = str;
mt->type = type;
mt->next = mt->prev = NULL;
return mt;
}
static mtext_t *combine_mtext(mtext_t *tail, mtext_t *mtp)
{
if(!tail)
return mtp;
if(!mtp)
return tail;
if(tail->type == exp_text && mtp->type == exp_text)
{
char *new_text;
new_text = pp_xrealloc(tail->subst.text, strlen(tail->subst.text)+strlen(mtp->subst.text)+1);
if(!new_text)
return mtp;
tail->subst.text = new_text;
strcat(tail->subst.text, mtp->subst.text);
free(mtp->subst.text);
free(mtp);
return tail;
}
if(tail->type == exp_concat && mtp->type == exp_concat)
{
free(mtp);
return tail;
}
if(tail->type == exp_concat && mtp->type == exp_text)
{
int len = strlen(mtp->subst.text);
while(len)
{
/* FIXME: should delete space from head of string */
if(isspace(mtp->subst.text[len-1] & 0xff))
mtp->subst.text[--len] = '\0';
else
break;
}
if(!len)
{
free(mtp->subst.text);
free(mtp);
return tail;
}
}
if(tail->type == exp_text && mtp->type == exp_concat)
{
int len = strlen(tail->subst.text);
while(len)
{
if(isspace(tail->subst.text[len-1] & 0xff))
tail->subst.text[--len] = '\0';
else
break;
}
if(!len)
{
mtp->prev = tail->prev;
mtp->next = tail->next;
if(tail->prev)
tail->prev->next = mtp;
free(tail->subst.text);
free(tail);
return mtp;
}
}
tail->next = mtp;
mtp->prev = tail;
return mtp;
}
static char *merge_text(char *s1, char *s2)
{
int l1;
int l2;
char *snew;
if(!s1)
return s2;
if(!s2)
return s1;
l1 = strlen(s1);
l2 = strlen(s2);
snew = pp_xrealloc(s1, l1+l2+1);
if(!snew)
{
free(s2);
return s1;
}
s1 = snew;
memcpy(s1+l1, s2, l2+1);
free(s2);
return s1;
}
Reference in a new issue View git blame Copy permalink