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   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 v2.val.ui;      \
  63         else if(!cv_signed(v1) && cv_signed(v2))        \
  64                 r.val.ui = 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 v2.val.ul;      \
  74         else if(!cv_signed(v1) && cv_signed(v2))        \
  75                 r.val.ul = 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 v2.val.ull;   \
  85         else if(!cv_signed(v1) && cv_signed(v2))        \
  86                 r.val.ull = 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 marg_t *new_marg(char *str, def_arg_t type);
 112 static marg_t *add_new_marg(char *str, def_arg_t type);
 113 static int marg_index(char *id);
 114 static mtext_t *new_mtext(char *str, int idx, def_exp_t type);
 115 static mtext_t *combine_mtext(mtext_t *tail, mtext_t *mtp);
 116 static char *merge_text(char *s1, char *s2);
 117
 118 /*
 119  * Local variables
 120  */
 121 static marg_t **macro_args;     /* Macro parameters array while parsing */
 122 static int      nmacro_args;
 123
 124 %}
 125
 126 %union{
 127         int             sint;
 128         unsigned int    uint;
 129         long            slong;
 130         unsigned long   ulong;
 131         wrc_sll_t       sll;
 132         wrc_ull_t       ull;
 133         int             *iptr;
 134         char            *cptr;
 135         cval_t          cval;
 136         marg_t          *marg;
 137         mtext_t         *mtext;
 138 }
 139
 140 %token tRCINCLUDE
 141 %token tIF tIFDEF tIFNDEF tELSE tELIF tENDIF tDEFINED tNL
 142 %token tINCLUDE tLINE tGCCLINE tERROR tWARNING tPRAGMA tPPIDENT
 143 %token tUNDEF tMACROEND tCONCAT tELIPSIS tSTRINGIZE
 144 %token <cptr> tIDENT tLITERAL tMACRO tDEFINE
 145 %token <cptr> tDQSTRING tSQSTRING tIQSTRING
 146 %token <uint> tUINT
 147 %token <sint> tSINT
 148 %token <ulong> tULONG
 149 %token <slong> tSLONG
 150 %token <ull> tULONGLONG
 151 %token <sll> tSLONGLONG
 152 %token <cptr> tRCINCLUDEPATH
 153
 154 %right '?' ':'
 155 %left tLOGOR
 156 %left tLOGAND
 157 %left '|'
 158 %left '^'
 159 %left '&'
 160 %left tEQ tNE
 161 %left '<' tLTE '>' tGTE
 162 %left tLSHIFT tRSHIFT
 163 %left '+' '-'
 164 %left '*' '/'
 165 %right '~' '!'
 166
 167 %type <cval>    pp_expr
 168 %type <marg>    emargs margs
 169 %type <mtext>   opt_mtexts mtexts mtext
 170 %type <sint>    allmargs
 171 %type <cptr>    opt_text text
 172
 173 /*
 174  **************************************************************************
 175  * The parser starts here
 176  **************************************************************************
 177  */
 178
 179 %%
 180
 181 pp_file : /* Empty */
 182         | pp_file preprocessor
 183         ;
 184
 185 preprocessor
 186         : tINCLUDE tDQSTRING tNL        { pp_do_include($2, 1); }
 187         | tINCLUDE tIQSTRING tNL        { pp_do_include($2, 0); }
 188         | tIF pp_expr tNL       { pp_next_if_state(boolean(&$2)); }
 189         | tIFDEF tIDENT tNL     { pp_next_if_state(pplookup($2) != NULL); free($2); }
 190         | tIFNDEF tIDENT tNL    {
 191                 int t = pplookup($2) == NULL;
 192                 if(pp_incl_state.state == 0 && t && !pp_incl_state.seen_junk)
 193                 {
 194                         pp_incl_state.state     = 1;
 195                         pp_incl_state.ppp       = $2;
 196                         pp_incl_state.ifdepth   = pp_get_if_depth();
 197                 }
 198                 else if(pp_incl_state.state != 1)
 199                 {
 200                         pp_incl_state.state = -1;
 201                         free($2);
 202                 }
 203                 else
 204                         free($2);
 205                 pp_next_if_state(t);
 206                 if(pp_status.debug)
 207                         fprintf(stderr, "tIFNDEF: %s:%d: include_state=%d, include_ppp='%s', include_ifdepth=%d\n",
 208                                 pp_status.input, pp_status.line_number, pp_incl_state.state, pp_incl_state.ppp, pp_incl_state.ifdepth);
 209                 }
 210         | tELIF pp_expr tNL     {
 211                 pp_if_state_t s = pp_pop_if();
 212                 switch(s)
 213                 {
 214                 case if_true:
 215                 case if_elif:
 216                         pp_push_if(if_elif);
 217                         break;
 218                 case if_false:
 219                         pp_push_if(boolean(&$2) ? if_true : if_false);
 220                         break;
 221                 case if_ignore:
 222                         pp_push_if(if_ignore);
 223                         break;
 224                 case if_elsetrue:
 225                 case if_elsefalse:
 226                         ppy_error("#elif cannot follow #else");
 227                         break;
 228                 case if_error:
 229                         break;
 230                 default:
 231                         pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d) in #elif directive", s);
 232                 }
 233                 }
 234         | tELSE tNL             {
 235                 pp_if_state_t s = pp_pop_if();
 236                 switch(s)
 237                 {
 238                 case if_true:
 239                         pp_push_if(if_elsefalse);
 240                         break;
 241                 case if_elif:
 242                         pp_push_if(if_elif);
 243                         break;
 244                 case if_false:
 245                         pp_push_if(if_elsetrue);
 246                         break;
 247                 case if_ignore:
 248                         pp_push_if(if_ignore);
 249                         break;
 250                 case if_elsetrue:
 251                 case if_elsefalse:
 252                         ppy_error("#else clause already defined");
 253                         break;
 254                 case if_error:
 255                         break;
 256                 default:
 257                         pp_internal_error(__FILE__, __LINE__, "Invalid pp_if_state (%d) in #else directive", s);
 258                 }
 259                 }
 260         | tENDIF tNL            {
 261                 if(pp_pop_if() != if_error)
 262                 {
 263                         if(pp_incl_state.ifdepth == pp_get_if_depth() && pp_incl_state.state == 1)
 264                         {
 265                                 pp_incl_state.state = 2;
 266                                 pp_incl_state.seen_junk = 0;
 267                         }
 268                         else if(pp_incl_state.state != 1)
 269                         {
 270                                 pp_incl_state.state = -1;
 271                         }
 272                         if(pp_status.debug)
 273                                 fprintf(stderr, "tENDIF: %s:%d: include_state=%d, include_ppp='%s', include_ifdepth=%d\n",
 274                                         pp_status.input, pp_status.line_number, pp_incl_state.state, pp_incl_state.ppp, pp_incl_state.ifdepth);
 275                 }
 276                 }
 277         | tUNDEF tIDENT tNL     { pp_del_define($2); free($2); }
 278         | tDEFINE opt_text tNL  { pp_add_define($1, $2); }
 279         | tMACRO res_arg allmargs tMACROEND opt_mtexts tNL      {
 280                 pp_add_macro($1, macro_args, nmacro_args, $5);
 281                 }
 282         | tLINE tSINT tDQSTRING tNL     { if($3) pp_writestring("# %d %s\n", $2 , $3); free($3); }
 283         | tGCCLINE tSINT tDQSTRING tNL  { if($3) pp_writestring("# %d %s\n", $2 , $3); free($3); }
 284         | tGCCLINE tSINT tDQSTRING tSINT tNL
 285                 { if($3) pp_writestring("# %d %s %d\n", $2, $3, $4); free($3); }
 286         | tGCCLINE tSINT tDQSTRING tSINT tSINT tNL
 287                 { if($3) pp_writestring("# %d %s %d %d\n", $2 ,$3, $4, $5); free($3); }
 288         | tGCCLINE tSINT tDQSTRING tSINT tSINT tSINT  tNL
 289                 { if($3) pp_writestring("# %d %s %d %d %d\n", $2 ,$3 ,$4 ,$5, $6); free($3); }
 290         | tGCCLINE tSINT tDQSTRING tSINT tSINT tSINT tSINT tNL
 291                 { if($3) pp_writestring("# %d %s %d %d %d %d\n", $2 ,$3 ,$4 ,$5, $6, $7); free($3); }
 292         | tGCCLINE tNL          /* The null-token */
 293         | tERROR opt_text tNL   { ppy_error("#error directive: '%s'", $2); free($2); }
 294         | tWARNING opt_text tNL { ppy_warning("#warning directive: '%s'", $2); free($2); }
 295         | tPRAGMA opt_text tNL  { pp_writestring("#pragma %s\n", $2 ? $2 : ""); free($2); }
 296         | tPPIDENT opt_text tNL { if(pp_status.pedantic) ppy_warning("#ident ignored (arg: '%s')", $2); free($2); }
 297         | tRCINCLUDE tRCINCLUDEPATH {
 298                 if($2)
 299                 {
 300                         int nl=strlen($2) +3;
 301                         char *fn=pp_xmalloc(nl);
 302                         if(fn)
 303                         {
 304                                 sprintf(fn,"\"%s\"",$2);
 305                                 pp_do_include(fn,1);
 306                         }
 307                         free($2);
 308                 }
 309         }
 310         | tRCINCLUDE tDQSTRING {
 311                 pp_do_include($2,1);
 312         }
 313         /*| tNL*/
 314         ;
 315
 316 opt_text: /* Empty */   { $$ = NULL; }
 317         | text          { $$ = $1; }
 318         ;
 319
 320 text    : tLITERAL              { $$ = $1; }
 321         | tDQSTRING             { $$ = $1; }
 322         | tSQSTRING             { $$ = $1; }
 323         | text tLITERAL         { $$ = merge_text($1, $2); }
 324         | text tDQSTRING        { $$ = merge_text($1, $2); }
 325         | text tSQSTRING        { $$ = merge_text($1, $2); }
 326         ;
 327
 328 res_arg : /* Empty */   { macro_args = NULL; nmacro_args = 0; }
 329         ;
 330
 331 allmargs: /* Empty */           { $$ = 0; macro_args = NULL; nmacro_args = 0; }
 332         | emargs                { $$ = nmacro_args; }
 333         ;
 334
 335 emargs  : margs                 { $$ = $1; }
 336         | margs ',' tELIPSIS    { $$ = add_new_marg(NULL, arg_list); nmacro_args *= -1; }
 337         ;
 338
 339 margs   : margs ',' tIDENT      { $$ = add_new_marg($3, arg_single); }
 340         | tIDENT                { $$ = add_new_marg($1, arg_single); }
 341         ;
 342
 343 opt_mtexts
 344         : /* Empty */   { $$ = NULL; }
 345         | mtexts        {
 346                 for($$ = $1; $$ && $$->prev; $$ = $$->prev)
 347                         ;
 348                 }
 349         ;
 350
 351 mtexts  : mtext         { $$ = $1; }
 352         | mtexts mtext  { $$ = combine_mtext($1, $2); }
 353         ;
 354
 355 mtext   : tLITERAL      { $$ = new_mtext($1, 0, exp_text); }
 356         | tDQSTRING     { $$ = new_mtext($1, 0, exp_text); }
 357         | tSQSTRING     { $$ = new_mtext($1, 0, exp_text); }
 358         | tCONCAT       { $$ = new_mtext(NULL, 0, exp_concat); }
 359         | tSTRINGIZE tIDENT     {
 360                 int mat = marg_index($2);
 361                 if(mat < 0)
 362                         ppy_error("Stringification identifier must be an argument parameter");
 363                 else
 364                         $$ = new_mtext(NULL, mat, exp_stringize);
 365                 }
 366         | tIDENT        {
 367                 int mat = marg_index($1);
 368                 if(mat >= 0)
 369                         $$ = new_mtext(NULL, mat, exp_subst);
 370                 else if($1)
 371                         $$ = new_mtext($1, 0, exp_text);
 372                 }
 373         ;
 374
 375 pp_expr : tSINT                         { $$.type = cv_sint;  $$.val.si = $1; }
 376         | tUINT                         { $$.type = cv_uint;  $$.val.ui = $1; }
 377         | tSLONG                        { $$.type = cv_slong; $$.val.sl = $1; }
 378         | tULONG                        { $$.type = cv_ulong; $$.val.ul = $1; }
 379         | tSLONGLONG                    { $$.type = cv_sll;   $$.val.sll = $1; }
 380         | tULONGLONG                    { $$.type = cv_ull;   $$.val.ull = $1; }
 381         | tDEFINED tIDENT               { $$.type = cv_sint;  $$.val.si = pplookup($2) != NULL; }
 382         | tDEFINED '(' tIDENT ')'       { $$.type = cv_sint;  $$.val.si = pplookup($3) != NULL; }
 383         | tIDENT                        { $$.type = cv_sint;  $$.val.si = 0; }
 384         | pp_expr tLOGOR pp_expr        { $$.type = cv_sint; $$.val.si = boolean(&$1) || boolean(&$3); }
 385         | pp_expr tLOGAND pp_expr       { $$.type = cv_sint; $$.val.si = boolean(&$1) && boolean(&$3); }
 386         | pp_expr tEQ pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, ==) }
 387         | pp_expr tNE 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($$, $1, $3,  >) }
 390         | pp_expr tLTE pp_expr          { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, <=) }
 391         | pp_expr tGTE pp_expr          { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, >=) }
 392         | pp_expr '+' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  +) }
 393         | pp_expr '-' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  -) }
 394         | pp_expr '^' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  ^) }
 395         | pp_expr '&' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  &) }
 396         | pp_expr '|' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  |) }
 397         | pp_expr '*' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  *) }
 398         | pp_expr '/' pp_expr           { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3,  /) }
 399         | pp_expr tLSHIFT pp_expr       { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, <<) }
 400         | pp_expr tRSHIFT pp_expr       { promote_equal_size(&$1, &$3); BIN_OP($$, $1, $3, >>) }
 401         | '+' pp_expr                   { $$ =  $2; }
 402         | '-' pp_expr                   { UNARY_OP($$, $2, -) }
 403         | '~' pp_expr                   { UNARY_OP($$, $2, ~) }
 404         | '!' pp_expr                   { $$.type = cv_sint; $$.val.si = !boolean(&$2); }
 405         | '(' pp_expr ')'               { $$ =  $2; }
 406         | pp_expr '?' pp_expr ':' pp_expr { $$ = boolean(&$1) ? $3 : $5; }
 407         ;
 408
 409 %%
 410
 411 /*
 412  **************************************************************************
 413  * Support functions
 414  **************************************************************************
 415  */
 416
 417 static void cast_to_sint(cval_t *v)
 418 {
 419         switch(v->type)
 420         {
 421         case cv_sint:   break;
 422         case cv_uint:   break;
 423         case cv_slong:  v->val.si = v->val.sl;  break;
 424         case cv_ulong:  v->val.si = v->val.ul;  break;
 425         case cv_sll:    v->val.si = v->val.sll; break;
 426         case cv_ull:    v->val.si = v->val.ull; break;
 427         }
 428         v->type = cv_sint;
 429 }
 430
 431 static void cast_to_uint(cval_t *v)
 432 {
 433         switch(v->type)
 434         {
 435         case cv_sint:   break;
 436         case cv_uint:   break;
 437         case cv_slong:  v->val.ui = v->val.sl;  break;
 438         case cv_ulong:  v->val.ui = v->val.ul;  break;
 439         case cv_sll:    v->val.ui = v->val.sll; break;
 440         case cv_ull:    v->val.ui = v->val.ull; break;
 441         }
 442         v->type = cv_uint;
 443 }
 444
 445 static void cast_to_slong(cval_t *v)
 446 {
 447         switch(v->type)
 448         {
 449         case cv_sint:   v->val.sl = v->val.si;  break;
 450         case cv_uint:   v->val.sl = v->val.ui;  break;
 451         case cv_slong:  break;
 452         case cv_ulong:  break;
 453         case cv_sll:    v->val.sl = v->val.sll; break;
 454         case cv_ull:    v->val.sl = v->val.ull; break;
 455         }
 456         v->type = cv_slong;
 457 }
 458
 459 static void cast_to_ulong(cval_t *v)
 460 {
 461         switch(v->type)
 462         {
 463         case cv_sint:   v->val.ul = v->val.si;  break;
 464         case cv_uint:   v->val.ul = v->val.ui;  break;
 465         case cv_slong:  break;
 466         case cv_ulong:  break;
 467         case cv_sll:    v->val.ul = v->val.sll; break;
 468         case cv_ull:    v->val.ul = v->val.ull; break;
 469         }
 470         v->type = cv_ulong;
 471 }
 472
 473 static void cast_to_sll(cval_t *v)
 474 {
 475         switch(v->type)
 476         {
 477         case cv_sint:   v->val.sll = v->val.si; break;
 478         case cv_uint:   v->val.sll = v->val.ui; break;
 479         case cv_slong:  v->val.sll = v->val.sl; break;
 480         case cv_ulong:  v->val.sll = v->val.ul; break;
 481         case cv_sll:    break;
 482         case cv_ull:    break;
 483         }
 484         v->type = cv_sll;
 485 }
 486
 487 static void cast_to_ull(cval_t *v)
 488 {
 489         switch(v->type)
 490         {
 491         case cv_sint:   v->val.ull = v->val.si; break;
 492         case cv_uint:   v->val.ull = v->val.ui; break;
 493         case cv_slong:  v->val.ull = v->val.sl; break;
 494         case cv_ulong:  v->val.ull = v->val.ul; break;
 495         case cv_sll:    break;
 496         case cv_ull:    break;
 497         }
 498         v->type = cv_ull;
 499 }
 500
 501
 502 static void promote_equal_size(cval_t *v1, cval_t *v2)
 503 {
 504 #define cv_sizeof(v)    ((int)(v->type & SIZE_MASK))
 505         int s1 = cv_sizeof(v1);
 506         int s2 = cv_sizeof(v2);
 507 #undef cv_sizeof
 508
 509         if(s1 == s2)
 510                 return;
 511         else if(s1 > s2)
 512         {
 513                 switch(v1->type)
 514                 {
 515                 case cv_sint:   cast_to_sint(v2); break;
 516                 case cv_uint:   cast_to_uint(v2); break;
 517                 case cv_slong:  cast_to_slong(v2); break;
 518                 case cv_ulong:  cast_to_ulong(v2); break;
 519                 case cv_sll:    cast_to_sll(v2); break;
 520                 case cv_ull:    cast_to_ull(v2); break;
 521                 }
 522         }
 523         else
 524         {
 525                 switch(v2->type)
 526                 {
 527                 case cv_sint:   cast_to_sint(v1); break;
 528                 case cv_uint:   cast_to_uint(v1); break;
 529                 case cv_slong:  cast_to_slong(v1); break;
 530                 case cv_ulong:  cast_to_ulong(v1); break;
 531                 case cv_sll:    cast_to_sll(v1); break;
 532                 case cv_ull:    cast_to_ull(v1); break;
 533                 }
 534         }
 535 }
 536
 537
 538 static int boolean(cval_t *v)
 539 {
 540         switch(v->type)
 541         {
 542         case cv_sint:   return v->val.si != (int)0;
 543         case cv_uint:   return v->val.ui != (unsigned int)0;
 544         case cv_slong:  return v->val.sl != (long)0;
 545         case cv_ulong:  return v->val.ul != (unsigned long)0;
 546         case cv_sll:    return v->val.sll != (wrc_sll_t)0;
 547         case cv_ull:    return v->val.ull != (wrc_ull_t)0;
 548         }
 549         return 0;
 550 }
 551
 552 static marg_t *new_marg(char *str, def_arg_t type)
 553 {
 554         marg_t *ma = pp_xmalloc(sizeof(marg_t));
 555         if(!ma)
 556                 return NULL;
 557         ma->arg = str;
 558         ma->type = type;
 559         ma->nnl = 0;
 560         return ma;
 561 }
 562
 563 static marg_t *add_new_marg(char *str, def_arg_t type)
 564 {
 565         marg_t **new_macro_args;
 566         marg_t *ma;
 567         if(!str)
 568                 return NULL;
 569         new_macro_args = pp_xrealloc(macro_args, (nmacro_args+1) * sizeof(macro_args[0]));
 570         if(!new_macro_args)
 571                 return NULL;
 572         macro_args = new_macro_args;
 573         ma = new_marg(str, type);
 574         if(!ma)
 575                 return NULL;
 576         macro_args[nmacro_args] = ma;
 577         nmacro_args++;
 578         return ma;
 579 }
 580
 581 static int marg_index(char *id)
 582 {
 583         int t;
 584         if(!id)
 585                 return -1;
 586         for(t = 0; t < nmacro_args; t++)
 587         {
 588                 if(!strcmp(id, macro_args[t]->arg))
 589                         break;
 590         }
 591         return t < nmacro_args ? t : -1;
 592 }
 593
 594 static mtext_t *new_mtext(char *str, int idx, def_exp_t type)
 595 {
 596         mtext_t *mt = pp_xmalloc(sizeof(mtext_t));
 597         if(!mt)
 598                 return NULL;
 599         if(str == NULL)
 600                 mt->subst.argidx = idx;
 601         else
 602                 mt->subst.text = str;
 603         mt->type = type;
 604         mt->next = mt->prev = NULL;
 605         return mt;
 606 }
 607
 608 static mtext_t *combine_mtext(mtext_t *tail, mtext_t *mtp)
 609 {
 610         if(!tail)
 611                 return mtp;
 612
 613         if(!mtp)
 614                 return tail;
 615
 616         if(tail->type == exp_text && mtp->type == exp_text)
 617         {
 618                 char *new_text;
 619                 new_text = pp_xrealloc(tail->subst.text, strlen(tail->subst.text)+strlen(mtp->subst.text)+1);
 620                 if(!new_text)
 621                         return mtp;
 622                 tail->subst.text = new_text;
 623                 strcat(tail->subst.text, mtp->subst.text);
 624                 free(mtp->subst.text);
 625                 free(mtp);
 626                 return tail;
 627         }
 628
 629         if(tail->type == exp_concat && mtp->type == exp_concat)
 630         {
 631                 free(mtp);
 632                 return tail;
 633         }
 634
 635         if(tail->type == exp_concat && mtp->type == exp_text)
 636         {
 637                 int len = strlen(mtp->subst.text);
 638                 while(len)
 639                 {
 640 /* FIXME: should delete space from head of string */
 641                         if(isspace(mtp->subst.text[len-1] & 0xff))
 642                                 mtp->subst.text[--len] = '\0';
 643                         else
 644                                 break;
 645                 }
 646
 647                 if(!len)
 648                 {
 649                         free(mtp->subst.text);
 650                         free(mtp);
 651                         return tail;
 652                 }
 653         }
 654
 655         if(tail->type == exp_text && mtp->type == exp_concat)
 656         {
 657                 int len = strlen(tail->subst.text);
 658                 while(len)
 659                 {
 660                         if(isspace(tail->subst.text[len-1] & 0xff))
 661                                 tail->subst.text[--len] = '\0';
 662                         else
 663                                 break;
 664                 }
 665
 666                 if(!len)
 667                 {
 668                         mtp->prev = tail->prev;
 669                         mtp->next = tail->next;
 670                         if(tail->prev)
 671                                 tail->prev->next = mtp;
 672                         free(tail->subst.text);
 673                         free(tail);
 674                         return mtp;
 675                 }
 676         }
 677
 678         tail->next = mtp;
 679         mtp->prev = tail;
 680
 681         return mtp;
 682 }
 683
 684 static char *merge_text(char *s1, char *s2)
 685 {
 686         int l1;
 687         int l2;
 688         char *snew;
 689         if(!s1)
 690                 return s2;
 691         if(!s2)
 692                 return s1;
 693         l1 = strlen(s1);
 694         l2 = strlen(s2);
 695         snew = pp_xrealloc(s1, l1+l2+1);
 696         if(!snew)
 697         {
 698                 free(s2);
 699                 return s1;
 700         }
 701         s1 = snew;
 702         memcpy(s1+l1, s2, l2+1);
 703         free(s2);
 704         return s1;
 705 }