libs/wpp/ppy.y

   1 /*
   2  * Wrc preprocessor syntax analysis
   3  *
   4  * Copyright 1999-2000  Bertho A. Stultiens (BS)
   5  *
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  *
  21  * History:
  22  * 24-Apr-2000 BS       Restructured the lot to fit the new scanner
  23  *                      and reintegrate into the wine-tree.
  24  * 01-Jan-2000 BS       FIXME: win16 preprocessor calculates with
  25  *                      16 bit ints and overflows...?
  26  * 26-Dec-1999 BS       Started this file
  27  *
  28  */
  29
  30 %{
  31 #include "config.h"
  32 #include "wine/port.h"
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <stdarg.h>
  37 #include <assert.h>
  38 #include <ctype.h>
  39 #include <string.h>
  40
  41 #include "wpp_private.h"
  42
  43
  44 #define UNARY_OP(r, v, OP)                                      \
  45         switch(v.type)                                          \
  46         {                                                       \
  47         case cv_sint:   r.val.si  = OP v.val.si; break;         \
  48         case cv_uint:   r.val.ui  = OP v.val.ui; break;         \
  49         case cv_slong:  r.val.sl  = OP v.val.sl; break;         \
  50         case cv_ulong:  r.val.ul  = OP v.val.ul; break;         \
  51         case cv_sll:    r.val.sll = OP v.val.sll; break;        \
  52         case cv_ull:    r.val.ull = OP v.val.ull; break;        \
  53         }
  54
  55 #define cv_signed(v)    ((v.type & FLAG_SIGNED) != 0)
  56
  57 #define BIN_OP_INT(r, v1, v2, OP)                       \
  58         r.type = v1.type;                               \
  59         if(cv_signed(v1) && cv_signed(v2))              \
  60                 r.val.si = v1.val.si OP v2.val.si;      \
  61         else if(cv_signed(v1) && !cv_signed(v2))        \
  62                 r.val.si = v1.val.si OP (signed) v2.val.ui; \
  63         else if(!cv_signed(v1) && cv_signed(v2))        \
  64                 r.val.si = (signed) v1.val.ui OP v2.val.si; \
  65         else                                            \
  66                 r.val.ui = v1.val.ui OP v2.val.ui;
  67
  68 #define BIN_OP_LONG(r, v1, v2, OP)                      \
  69         r.type = v1.type;                               \
  70         if(cv_signed(v1) && cv_signed(v2))              \
  71                 r.val.sl = v1.val.sl OP v2.val.sl;      \
  72         else if(cv_signed(v1) && !cv_signed(v2))        \
  73                 r.val.sl = v1.val.sl OP (signed long) v2.val.ul; \
  74         else if(!cv_signed(v1) && cv_signed(v2))        \
  75                 r.val.sl = (signed long) v1.val.ul OP v2.val.sl; \
  76         else                                            \
  77                 r.val.ul = v1.val.ul OP v2.val.ul;
  78
  79 #define BIN_OP_LONGLONG(r, v1, v2, OP)                  \
  80         r.type = v1.type;                               \
  81         if(cv_signed(v1) && cv_signed(v2))              \
  82                 r.val.sll = v1.val.sll OP v2.val.sll;   \
  83         else if(cv_signed(v1) && !cv_signed(v2))        \
  84                 r.val.sll = v1.val.sll OP (__int64) v2.val.ull; \
  85         else if(!cv_signed(v1) && cv_signed(v2))        \
  86                 r.val.sll = (__int64) v1.val.ull OP v2.val.sll; \
  87         else                                            \
  88                 r.val.ull = v1.val.ull OP v2.val.ull;
  89
  90 #define BIN_OP(r, v1, v2, OP)                                           \
  91         switch(v1.type & SIZE_MASK)                                     \
  92         {                                                               \
  93         case SIZE_INT:          BIN_OP_INT(r, v1, v2, OP); break;       \
  94         case SIZE_LONG:         BIN_OP_LONG(r, v1, v2, OP); break;      \
  95         case SIZE_LONGLONG:     BIN_OP_LONGLONG(r, v1, v2, OP); break;  \
  96         default: pp_internal_error(__FILE__, __LINE__, "Invalid type indicator (0x%04x)", v1.type);     \
  97         }
  98
  99
 100 /*
 101  * Prototypes
 102  */
 103 static int boolean(cval_t *v);
 104 static void promote_equal_size(cval_t *v1, cval_t *v2);
 105 static void cast_to_sint(cval_t *v);
 106 static void cast_to_uint(cval_t *v);
 107 static void cast_to_slong(cval_t *v);
 108 static void cast_to_ulong(cval_t *v);
 109 static void cast_to_sll(cval_t *v);
 110 static void cast_to_ull(cval_t *v);
 111 static char *add_new_marg(char *str);
 112 static int marg_index(char *id);
 113 static mtext_t *new_mtext(char *str, int idx, def_exp_t type);
 114 static mtext_t *combine_mtext(mtext_t *tail, mtext_t *mtp);
 115 static char *merge_text(char *s1, char *s2);
 116
 117 /*
 118  * Local variables
 119  */
 120 static char   **macro_args;     /* Macro parameters array while parsing */
 121 static int      nmacro_args;
 122
 123 %}
 124
 125 %union{
 126         int             sint;
 127         unsigned int    uint;
 128         long            slong;
 129         unsigned long   ulong;
 130         __int64         sll;
 131         unsigned __int64 ull;
 132         int             *iptr;
 133         char            *cptr;
 134         cval_t          cval;
 135         char            *marg;
 136         mtext_t         *mtext;
 137 }
 138
 139 %token tRCINCLUDE
 140 %token tIF tIFDEF tIFNDEF tELSE tELIF tENDIF tDEFINED tNL
 141 %token tINCLUDE tLINE tGCCLINE tERROR tWARNING tPRAGMA tPPIDENT
 142 %token tUNDEF tMACROEND tCONCAT tELLIPSIS tSTRINGIZE
 143 %token <cptr> tIDENT tLITERAL tMACRO tDEFINE
 144 %token <cptr> tDQSTRING tSQSTRING tIQSTRING
 145 %token <uint> tUINT
 146 %token <sint> tSINT
 147 %token <ulong> tULONG
 148 %token <slong> tSLONG
 149 %token <ull> tULONGLONG
 150 %token <sll> tSLONGLONG
 151 %token <cptr> tRCINCLUDEPATH
 152
 153 %right '?' ':'
 154 %left tLOGOR
 155 %left tLOGAND
 156 %left '|'
 157 %left '^'
 158 %left '&'
 159 %left tEQ tNE
 160 %left '<' tLTE '>' tGTE
 161 %left tLSHIFT tRSHIFT
 162 %left '+' '-'
 163 %left '*' '/'
 164 %right '~' '!'
 165
 166 %type <cval>    pp_expr
 167 %type <marg>    emargs margs
 168 %type <mtext>   opt_mtexts mtexts mtext
 169 %type <sint>    allmargs
 170 %type <cptr>    opt_text text
 171
 172 /*
 173  **************************************************************************
 174  * The parser starts here
 175  **************************************************************************
 176  */
 177
 178 %%
 179
 180 pp_file : /* Empty */
 181         | pp_file preprocessor
 182         ;
 183
 184 preprocessor
 185         : tINCLUDE tDQSTRING tNL        { pp_do_include($2, 1); }
 186         | tINCLUDE tIQSTRING tNL        { pp_do_include($2, 0); }
 187         | tIF pp_expr tNL       { pp_next_if_state(boolean(&$2)); }
 188         | tIFDEF tIDENT tNL     { pp_next_if_state(pplookup($2) != NULL); free($2); }
 189         | tIFNDEF tIDENT tNL    {
 190                 int t = pplookup($2) == NULL;
 191                 if(pp_incl_state.state == 0 && t && !pp_incl_state.seen_junk)
 192                 {
 193                         pp_incl_state.state     = 1;
 194                         pp_incl_state.ppp       = $2;
 195                         pp_incl_state.ifdepth   = pp_get_if_depth();
 196                 }
 197                 else if(pp_incl_state.state != 1)
 198                 {
 199                         pp_incl_state.state = -1;
 200                         free($2);
 201                 }
 202                 else
 203                         free($2);
 204                 pp_next_if_state(t);
 205                 if(pp_status.debug)
 206                         fprintf(stderr, "tIFNDEF: %s:%d: include_state=%d, include_ppp='%s', include_ifdepth=%d\n",
 207                                 pp_status.input, pp_status.line_number, pp_incl_state.state, pp_incl_state.ppp, pp_incl_state.ifdepth);
 208                 }
 209         | tELIF pp_expr tNL     {
 210                 pp_if_state_t s = pp_pop_if();
 211                 switch(s)
 212                 {
 213                 case if_true:
 214                 case if_elif:
 215                         pp_push_if(if_elif);
 216                         break;
 217                 case if_false:
 218                         pp_push_if(boolean(&$2) ? if_true : if_false);
 219                         break;
 220                 case if_ignore:
 221                         pp_push_if(if_ignore);
 222                         break;
 223                 case if_elsetrue:
 224                 case if_elsefalse:
 225                         ppy_error("#elif cannot follow #else");
 226                         break;
 227                 case if_error:
 228                         break;
 229                 default:
 230                         pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d) in #elif directive", s);
 231                 }
 232                 }
 233         | tELSE tNL             {
 234                 pp_if_state_t s = pp_pop_if();
 235                 switch(s)
 236                 {
 237                 case if_true:
 238                         pp_push_if(if_elsefalse);
 239                         break;
 240                 case if_elif:
 241                         pp_push_if(if_elif);
 242                         break;
 243                 case if_false:
 244                         pp_push_if(if_elsetrue);
 245                         break;
 246                 case if_ignore:
 247                         pp_push_if(if_ignore);
 248                         break;
 249                 case if_elsetrue:
 250                 case if_elsefalse:
 251                         ppy_error("#else clause already defined");
 252                         break;
 253                 case if_error:
 254                         break;
 255                 default:
 256                         pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d) in #else directive", s);
 257                 }
 258                 }
 259         | tENDIF tNL            {
 260                 if(pp_pop_if() != if_error)
 261                 {
 262                         if(pp_incl_state.ifdepth == pp_get_if_depth() && pp_incl_state.state == 1)
 263                         {
 264                                 pp_incl_state.state = 2;
 265                                 pp_incl_state.seen_junk = 0;
 266                         }
 267                         else if(pp_incl_state.state != 1)
 268                         {
 269                                 pp_incl_state.state = -1;
 270                         }
 271                         if(pp_status.debug)
 272                                 fprintf(stderr, "tENDIF: %s:%d: include_state=%d, include_ppp='%s', include_ifdepth=%d\n",
 273                                         pp_status.input, pp_status.line_number, pp_incl_state.state, pp_incl_state.ppp, pp_incl_state.ifdepth);
 274                 }
 275                 }
 276         | tUNDEF tIDENT tNL     { pp_del_define($2); free($2); }
 277         | tDEFINE opt_text tNL  { pp_add_define($1, $2); free($1); free($2); }
 278         | tMACRO res_arg allmargs tMACROEND opt_mtexts tNL      {
 279                 pp_add_macro($1, macro_args, nmacro_args, $5);
 280                 }
 281         | tLINE tSINT tDQSTRING tNL     { if($3) pp_writestring("# %d %s\n", $2 , $3); free($3); }
 282         | tGCCLINE tSINT tDQSTRING tNL  { if($3) pp_writestring("# %d %s\n", $2 , $3); free($3); }
 283         | tGCCLINE tSINT tDQSTRING tSINT tNL
 284                 { if($3) pp_writestring("# %d %s %d\n", $2, $3, $4); free($3); }
 285         | tGCCLINE tSINT tDQSTRING tSINT tSINT tNL
 286                 { if($3) pp_writestring("# %d %s %d %d\n", $2 ,$3, $4, $5); free($3); }
 287         | tGCCLINE tSINT tDQSTRING tSINT tSINT tSINT  tNL
 288                 { if($3) pp_writestring("# %d %s %d %d %d\n", $2 ,$3 ,$4 ,$5, $6); free($3); }
 289         | tGCCLINE tSINT tDQSTRING tSINT tSINT tSINT tSINT tNL
 290                 { if($3) pp_writestring("# %d %s %d %d %d %d\n", $2 ,$3 ,$4 ,$5, $6, $7); free($3); }
 291         | tGCCLINE tNL          /* The null-token */
 292         | tERROR opt_text tNL   { ppy_error("#error directive: '%s'", $2); free($2); }
 293         | tWARNING opt_text tNL { ppy_warning("#warning directive: '%s'", $2); free($2); }
 294         | tPRAGMA opt_text tNL  { pp_writestring("#pragma %s\n", $2 ? $2 : ""); free($2); }
 295         | tPPIDENT opt_text tNL { if(pp_status.pedantic) ppy_warning("#ident ignored (arg: '%s')", $2); free($2); }
 296         | tRCINCLUDE tRCINCLUDEPATH {
 297                 int nl=strlen($2) +3;
 298                 char *fn=pp_xmalloc(nl);
 299                 sprintf(fn,"\"%s\"",$2);
 300                 pp_do_include(fn,1);
 301                 free($2);
 302         }
 303         | tRCINCLUDE tDQSTRING {
 304                 pp_do_include($2,1);
 305         }
 306         /*| tNL*/
 307         ;
 308
 309 opt_text: /* Empty */   { $$ = NULL; }
 310         | text          { $$ = $1; }
 311         ;
 312
 313 text    : tLITERAL              { $$ = $1; }
 314         | tDQSTRING             { $$ = $1; }
 315         | tSQSTRING             { $$ = $1; }
 316         | text tLITERAL         { $$ = merge_text($1, $2); }
 317         | text tDQSTRING        { $$ = merge_text($1, $2); }
 318         | text tSQSTRING        { $$ = merge_text($1, $2); }
 319         ;
 320
 321 res_arg : /* Empty */   { macro_args = NULL; nmacro_args = 0; }
 322         ;
 323
 324 allmargs: /* Empty */           { $$ = 0; macro_args = NULL; nmacro_args = 0; }
 325         | emargs                { $$ = nmacro_args; }
 326         ;
 327
 328 emargs  : margs                 { $$ = $1; }
 329         | margs ',' tELLIPSIS   { nmacro_args *= -1; }
 330         ;
 331
 332 margs   : margs ',' tIDENT      { $$ = add_new_marg($3); }
 333         | tIDENT                { $$ = add_new_marg($1); }
 334         ;
 335
 336 opt_mtexts
 337         : /* Empty */   { $$ = NULL; }
 338         | mtexts        {
 339                 for($$ = $1; $$ && $$->prev; $$ = $$->prev)
 340                         ;
 341                 }
 342         ;
 343
 344 mtexts  : mtext         { $$ = $1; }
 345         | mtexts mtext  { $$ = combine_mtext($1, $2); }
 346         ;
 347
 348 mtext   : tLITERAL      { $$ = new_mtext($1, 0, exp_text); }
 349         | tDQSTRING     { $$ = new_mtext($1, 0, exp_text); }
 350         | tSQSTRING     { $$ = new_mtext($1, 0, exp_text); }
 351         | tCONCAT       { $$ = new_mtext(NULL, 0, exp_concat); }
 352         | tSTRINGIZE tIDENT     {
 353                 int mat = marg_index($2);
 354                 if(mat < 0)
 355                         ppy_error("Stringification identifier must be an argument parameter");
 356                 else
 357                         $$ = new_mtext(NULL, mat, exp_stringize);
 358                 }
 359         | tIDENT        {
 360                 int mat = marg_index($1);
 361                 if(mat >= 0)
 362                         $$ = new_mtext(NULL, mat, exp_subst);
 363                 else if($1)
 364                         $$ = new_mtext($1, 0, exp_text);
 365                 }
 366         ;
 367
 368 pp_expr : tSINT                         { $$.type = cv_sint;  $$.val.si = $1; }
 369         | tUINT                         { $$.type = cv_uint;  $$.val.ui = $1; }
 370         | tSLONG                        { $$.type = cv_slong; $$.val.sl = $1; }
 371         | tULONG                        { $$.type = cv_ulong; $$.val.ul = $1; }
 372         | tSLONGLONG                    { $$.type = cv_sll;   $$.val.sll = $1; }
 373         | tULONGLONG                    { $$.type = cv_ull;   $$.val.ull = $1; }
 374         | tDEFINED tIDENT               { $$.type = cv_sint;  $$.val.si = pplookup($2) != NULL; }
 375         | tDEFINED '(' tIDENT ')'       { $$.type = cv_sint;  $$.val.si = pplookup($3) != NULL; }
 376         | tIDENT                        { $$.type = cv_sint;  $$.val.si = 0; }
 377         | pp_expr tLOGOR pp_expr        { $$.type = cv_sint; $$.val.si = boolean(&$1) || boolean(&$3); }
 378         | pp_expr tLOGAND pp_expr       { $$.type = cv_sint; $$.val.si = boolean(&$1) && boolean(&$3); }
 379         | pp_expr tEQ pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, ==); }
 380         | pp_expr tNE pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, !=); }
 381         | pp_expr '<' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  <); }
 382         | pp_expr '>' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  >); }
 383         | pp_expr tLTE pp_expr          { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, <=); }
 384         | pp_expr tGTE pp_expr          { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, >=); }
 385         | pp_expr '+' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  +); }
 386         | pp_expr '-' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  -); }
 387         | pp_expr '^' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  ^); }
 388         | pp_expr '&' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  &); }
 389         | pp_expr '|' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  |); }
 390         | pp_expr '*' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  *); }
 391         | pp_expr '/' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  /); }
 392         | pp_expr tLSHIFT pp_expr       { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, <<); }
 393         | pp_expr tRSHIFT pp_expr       { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, >>); }
 394         | '+' pp_expr                   { $$ =  $2; }
 395         | '-' pp_expr                   { UNARY_OP($$, $2, -); }
 396         | '~' pp_expr                   { UNARY_OP($$, $2, ~); }
 397         | '!' pp_expr                   { $$.type = cv_sint; $$.val.si = !boolean(&$2); }
 398         | '(' pp_expr ')'               { $$ =  $2; }
 399         | pp_expr '?' pp_expr ':' pp_expr { $$ = boolean(&$1) ? $3 : $5; }
 400         ;
 401
 402 %%
 403
 404 /*
 405  **************************************************************************
 406  * Support functions
 407  **************************************************************************
 408  */
 409
 410 static void cast_to_sint(cval_t *v)
 411 {
 412         switch(v->type)
 413         {
 414         case cv_sint:   break;
 415         case cv_uint:   break;
 416         case cv_slong:  v->val.si = v->val.sl;  break;
 417         case cv_ulong:  v->val.si = v->val.ul;  break;
 418         case cv_sll:    v->val.si = v->val.sll; break;
 419         case cv_ull:    v->val.si = v->val.ull; break;
 420         }
 421         v->type = cv_sint;
 422 }
 423
 424 static void cast_to_uint(cval_t *v)
 425 {
 426         switch(v->type)
 427         {
 428         case cv_sint:   break;
 429         case cv_uint:   break;
 430         case cv_slong:  v->val.ui = v->val.sl;  break;
 431         case cv_ulong:  v->val.ui = v->val.ul;  break;
 432         case cv_sll:    v->val.ui = v->val.sll; break;
 433         case cv_ull:    v->val.ui = v->val.ull; break;
 434         }
 435         v->type = cv_uint;
 436 }
 437
 438 static void cast_to_slong(cval_t *v)
 439 {
 440         switch(v->type)
 441         {
 442         case cv_sint:   v->val.sl = v->val.si;  break;
 443         case cv_uint:   v->val.sl = v->val.ui;  break;
 444         case cv_slong:  break;
 445         case cv_ulong:  break;
 446         case cv_sll:    v->val.sl = v->val.sll; break;
 447         case cv_ull:    v->val.sl = v->val.ull; break;
 448         }
 449         v->type = cv_slong;
 450 }
 451
 452 static void cast_to_ulong(cval_t *v)
 453 {
 454         switch(v->type)
 455         {
 456         case cv_sint:   v->val.ul = v->val.si;  break;
 457         case cv_uint:   v->val.ul = v->val.ui;  break;
 458         case cv_slong:  break;
 459         case cv_ulong:  break;
 460         case cv_sll:    v->val.ul = v->val.sll; break;
 461         case cv_ull:    v->val.ul = v->val.ull; break;
 462         }
 463         v->type = cv_ulong;
 464 }
 465
 466 static void cast_to_sll(cval_t *v)
 467 {
 468         switch(v->type)
 469         {
 470         case cv_sint:   v->val.sll = v->val.si; break;
 471         case cv_uint:   v->val.sll = v->val.ui; break;
 472         case cv_slong:  v->val.sll = v->val.sl; break;
 473         case cv_ulong:  v->val.sll = v->val.ul; break;
 474         case cv_sll:    break;
 475         case cv_ull:    break;
 476         }
 477         v->type = cv_sll;
 478 }
 479
 480 static void cast_to_ull(cval_t *v)
 481 {
 482         switch(v->type)
 483         {
 484         case cv_sint:   v->val.ull = v->val.si; break;
 485         case cv_uint:   v->val.ull = v->val.ui; break;
 486         case cv_slong:  v->val.ull = v->val.sl; break;
 487         case cv_ulong:  v->val.ull = v->val.ul; break;
 488         case cv_sll:    break;
 489         case cv_ull:    break;
 490         }
 491         v->type = cv_ull;
 492 }
 493
 494
 495 static void promote_equal_size(cval_t *v1, cval_t *v2)
 496 {
 497 #define cv_sizeof(v)    ((int)(v->type & SIZE_MASK))
 498         int s1 = cv_sizeof(v1);
 499         int s2 = cv_sizeof(v2);
 500 #undef cv_sizeof
 501
 502         if(s1 == s2)
 503                 return;
 504         else if(s1 > s2)
 505         {
 506                 switch(v1->type)
 507                 {
 508                 case cv_sint:   cast_to_sint(v2); break;
 509                 case cv_uint:   cast_to_uint(v2); break;
 510                 case cv_slong:  cast_to_slong(v2); break;
 511                 case cv_ulong:  cast_to_ulong(v2); break;
 512                 case cv_sll:    cast_to_sll(v2); break;
 513                 case cv_ull:    cast_to_ull(v2); break;
 514                 }
 515         }
 516         else
 517         {
 518                 switch(v2->type)
 519                 {
 520                 case cv_sint:   cast_to_sint(v1); break;
 521                 case cv_uint:   cast_to_uint(v1); break;
 522                 case cv_slong:  cast_to_slong(v1); break;
 523                 case cv_ulong:  cast_to_ulong(v1); break;
 524                 case cv_sll:    cast_to_sll(v1); break;
 525                 case cv_ull:    cast_to_ull(v1); break;
 526                 }
 527         }
 528 }
 529
 530
 531 static int boolean(cval_t *v)
 532 {
 533         switch(v->type)
 534         {
 535         case cv_sint:   return v->val.si != 0;
 536         case cv_uint:   return v->val.ui != 0;
 537         case cv_slong:  return v->val.sl != 0;
 538         case cv_ulong:  return v->val.ul != 0;
 539         case cv_sll:    return v->val.sll != 0;
 540         case cv_ull:    return v->val.ull != 0;
 541         }
 542         return 0;
 543 }
 544
 545 static char *add_new_marg(char *str)
 546 {
 547         char *ma;
 548         macro_args = pp_xrealloc(macro_args, (nmacro_args+1) * sizeof(macro_args[0]));
 549         macro_args[nmacro_args++] = ma = pp_xstrdup(str);
 550         return ma;
 551 }
 552
 553 static int marg_index(char *id)
 554 {
 555         int t;
 556         if(!id)
 557                 return -1;
 558         for(t = 0; t < nmacro_args; t++)
 559         {
 560                 if(!strcmp(id, macro_args[t]))
 561                         break;
 562         }
 563         return t < nmacro_args ? t : -1;
 564 }
 565
 566 static mtext_t *new_mtext(char *str, int idx, def_exp_t type)
 567 {
 568         mtext_t *mt = pp_xmalloc(sizeof(mtext_t));
 569
 570         if(str == NULL)
 571                 mt->subst.argidx = idx;
 572         else
 573                 mt->subst.text = str;
 574         mt->type = type;
 575         mt->next = mt->prev = NULL;
 576         return mt;
 577 }
 578
 579 static mtext_t *combine_mtext(mtext_t *tail, mtext_t *mtp)
 580 {
 581         if(!tail)
 582                 return mtp;
 583
 584         if(!mtp)
 585                 return tail;
 586
 587         if(tail->type == exp_text && mtp->type == exp_text)
 588         {
 589                 tail->subst.text = pp_xrealloc(tail->subst.text, strlen(tail->subst.text)+strlen(mtp->subst.text)+1);
 590                 strcat(tail->subst.text, mtp->subst.text);
 591                 free(mtp->subst.text);
 592                 free(mtp);
 593                 return tail;
 594         }
 595
 596         if(tail->type == exp_concat && mtp->type == exp_concat)
 597         {
 598                 free(mtp);
 599                 return tail;
 600         }
 601
 602         if(tail->type == exp_concat && mtp->type == exp_text)
 603         {
 604                 int len = strlen(mtp->subst.text);
 605                 while(len)
 606                 {
 607 /* FIXME: should delete space from head of string */
 608                         if(isspace(mtp->subst.text[len-1] & 0xff))
 609                                 mtp->subst.text[--len] = '\0';
 610                         else
 611                                 break;
 612                 }
 613
 614                 if(!len)
 615                 {
 616                         free(mtp->subst.text);
 617                         free(mtp);
 618                         return tail;
 619                 }
 620         }
 621
 622         if(tail->type == exp_text && mtp->type == exp_concat)
 623         {
 624                 int len = strlen(tail->subst.text);
 625                 while(len)
 626                 {
 627                         if(isspace(tail->subst.text[len-1] & 0xff))
 628                                 tail->subst.text[--len] = '\0';
 629                         else
 630                                 break;
 631                 }
 632
 633                 if(!len)
 634                 {
 635                         mtp->prev = tail->prev;
 636                         mtp->next = tail->next;
 637                         if(tail->prev)
 638                                 tail->prev->next = mtp;
 639                         free(tail->subst.text);
 640                         free(tail);
 641                         return mtp;
 642                 }
 643         }
 644
 645         tail->next = mtp;
 646         mtp->prev = tail;
 647
 648         return mtp;
 649 }
 650
 651 static char *merge_text(char *s1, char *s2)
 652 {
 653         int l1 = strlen(s1);
 654         int l2 = strlen(s2);
 655         s1 = pp_xrealloc(s1, l1+l2+1);
 656         memcpy(s1+l1, s2, l2+1);
 657         free(s2);
 658         return s1;
 659 }