tools/widl/parser.y

   1 %{
   2 /*
   3  * IDL Compiler
   4  *
   5  * Copyright 2002 Ove Kaaven
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <stdarg.h>
  27 #include <assert.h>
  28 #include <ctype.h>
  29 #include <string.h>
  30 #ifdef HAVE_ALLOCA_H
  31 #include <alloca.h>
  32 #endif
  33
  34 #include "widl.h"
  35 #include "utils.h"
  36 #include "parser.h"
  37 #include "header.h"
  38 #include "proxy.h"
  39 #include "typelib.h"
  40
  41 #if defined(YYBYACC)
  42         /* Berkeley yacc (byacc) doesn't seem to know about these */
  43         /* Some *BSD supplied versions do define these though */
  44 # ifndef YYEMPTY
  45 #  define YYEMPTY       (-1)    /* Empty lookahead value of yychar */
  46 # endif
  47 # ifndef YYLEX
  48 #  define YYLEX         yylex()
  49 # endif
  50
  51 #elif defined(YYBISON)
  52         /* Bison was used for original development */
  53         /* #define YYEMPTY -2 */
  54         /* #define YYLEX   yylex() */
  55
  56 #else
  57         /* No yacc we know yet */
  58 # if !defined(YYEMPTY) || !defined(YYLEX)
  59 #  error Yacc version/type unknown. This version needs to be verified for settings of YYEMPTY and YYLEX.
  60 # elif defined(__GNUC__)        /* gcc defines the #warning directive */
  61 #  warning Yacc version/type unknown. It defines YYEMPTY and YYLEX, but is not tested
  62   /* #else we just take a chance that it works... */
  63 # endif
  64 #endif
  65
  66 static attr_t *make_attr(enum attr_type type);
  67 static attr_t *make_attrv(enum attr_type type, unsigned long val);
  68 static attr_t *make_attrp(enum attr_type type, void *val);
  69 static expr_t *make_expr(enum expr_type type);
  70 static expr_t *make_exprl(enum expr_type type, long val);
  71 static expr_t *make_exprs(enum expr_type type, char *val);
  72 static expr_t *make_exprt(enum expr_type type, typeref_t *tref, expr_t *expr);
  73 static expr_t *make_expr1(enum expr_type type, expr_t *expr);
  74 static expr_t *make_expr2(enum expr_type type, expr_t *exp1, expr_t *exp2);
  75 static expr_t *make_expr3(enum expr_type type, expr_t *expr1, expr_t *expr2, expr_t *expr3);
  76 static type_t *make_type(unsigned char type, type_t *ref);
  77 static typeref_t *make_tref(char *name, type_t *ref);
  78 static typeref_t *uniq_tref(typeref_t *ref);
  79 static type_t *type_ref(typeref_t *ref);
  80 static void set_type(var_t *v, typeref_t *ref, expr_t *arr);
  81 static ifref_t *make_ifref(type_t *iface);
  82 static var_t *make_var(char *name);
  83 static func_t *make_func(var_t *def, var_t *args);
  84 static class_t *make_class(char *name);
  85
  86 static type_t *reg_type(type_t *type, char *name, int t);
  87 static type_t *reg_types(type_t *type, var_t *names, int t);
  88 static type_t *find_type(char *name, int t);
  89 static type_t *find_type2(char *name, int t);
  90 static type_t *get_type(unsigned char type, char *name, int t);
  91 static type_t *get_typev(unsigned char type, var_t *name, int t);
  92 static int get_struct_type(var_t *fields);
  93
  94 static var_t *reg_const(var_t *var);
  95 static var_t *find_const(char *name, int f);
  96
  97 #define tsENUM   1
  98 #define tsSTRUCT 2
  99 #define tsUNION  3
 100
 101 static type_t std_bool = { "boolean" };
 102 static type_t std_int = { "int" };
 103 static type_t std_int64 = { "__int64" };
 104 static type_t std_uhyper = { "MIDL_uhyper" };
 105
 106 %}
 107 %union {
 108         attr_t *attr;
 109         expr_t *expr;
 110         type_t *type;
 111         typeref_t *tref;
 112         var_t *var;
 113         func_t *func;
 114         ifref_t *ifref;
 115         class_t *clas;
 116         char *str;
 117         UUID *uuid;
 118         unsigned int num;
 119 }
 120
 121 %token <str> aIDENTIFIER
 122 %token <str> aKNOWNTYPE
 123 %token <num> aNUM aHEXNUM
 124 %token <str> aSTRING
 125 %token <uuid> aUUID
 126 %token aEOF
 127 %token SHL SHR
 128 %token tAGGREGATABLE tALLOCATE tAPPOBJECT tARRAYS tASYNC tASYNCUUID
 129 %token tAUTOHANDLE tBINDABLE tBOOLEAN tBROADCAST tBYTE tBYTECOUNT
 130 %token tCALLAS tCALLBACK tCASE tCDECL tCHAR tCOCLASS tCODE tCOMMSTATUS
 131 %token tCONST tCONTEXTHANDLE tCONTEXTHANDLENOSERIALIZE
 132 %token tCONTEXTHANDLESERIALIZE tCONTROL tCPPQUOTE
 133 %token tDEFAULT
 134 %token tDISPINTERFACE
 135 %token tDLLNAME tDOUBLE tDUAL
 136 %token tENDPOINT
 137 %token tENTRY tENUM tERRORSTATUST
 138 %token tEXTERN
 139 %token tFLOAT
 140 %token tHANDLE
 141 %token tHANDLET
 142 %token tHELPSTRING
 143 %token tHYPER tID tIDEMPOTENT
 144 %token tIIDIS
 145 %token tIMPORT tIMPORTLIB
 146 %token tIN tINCLUDE tINLINE
 147 %token tINPUTSYNC
 148 %token tINT tINT64
 149 %token tINTERFACE
 150 %token tLENGTHIS tLIBRARY
 151 %token tLOCAL
 152 %token tLONG
 153 %token tMETHODS
 154 %token tMODULE
 155 %token tOBJECT tODL tOLEAUTOMATION
 156 %token tOUT
 157 %token tPOINTERDEFAULT
 158 %token tPROPERTIES
 159 %token tPUBLIC
 160 %token tREADONLY tREF
 161 %token tRETVAL
 162 %token tSHORT
 163 %token tSIGNED
 164 %token tSIZEIS tSIZEOF
 165 %token tSOURCE
 166 %token tSTDCALL
 167 %token tSTRING tSTRUCT
 168 %token tSWITCH tSWITCHIS tSWITCHTYPE
 169 %token tTRANSMITAS
 170 %token tTYPEDEF
 171 %token tUNION
 172 %token tUNIQUE
 173 %token tUNSIGNED
 174 %token tUUID
 175 %token tV1ENUM
 176 %token tVERSION
 177 %token tVOID
 178 %token tWCHAR tWIREMARSHAL
 179
 180 /* used in attr_t */
 181 %token tPOINTERTYPE
 182
 183 %type <attr> m_attributes attributes attrib_list attribute
 184 %type <expr> m_exprs /* exprs expr_list */ m_expr expr expr_list_const expr_const
 185 %type <expr> array array_list
 186 %type <type> inherit interface interfacehdr interfacedef interfacedec
 187 %type <type> dispinterface dispinterfacehdr dispinterfacedef
 188 %type <type> module modulehdr moduledef
 189 %type <type> base_type int_std
 190 %type <type> enumdef structdef typedef uniondef
 191 %type <ifref> gbl_statements coclass_ints coclass_int
 192 %type <tref> type
 193 %type <var> m_args no_args args arg
 194 %type <var> fields field s_field cases case enums enum_list enum constdef externdef
 195 %type <var> m_ident t_ident ident p_ident pident pident_list
 196 %type <var> dispint_props
 197 %type <func> funcdef int_statements
 198 %type <func> dispint_meths
 199 %type <clas> coclass coclasshdr coclassdef
 200 %type <num> pointer_type version
 201 %type <str> libraryhdr
 202
 203 %left ','
 204 %left '|'
 205 %left '&'
 206 %left '-' '+'
 207 %left '*' '/'
 208 %left SHL SHR
 209 %right '~'
 210 %right CAST
 211 %right PPTR
 212 %right NEG
 213
 214 %%
 215
 216 input:    gbl_statements                        { write_proxies($1); }
 217         ;
 218
 219 gbl_statements:                                 { $$ = NULL; }
 220         | gbl_statements interfacedec           { $$ = $1; }
 221         | gbl_statements interfacedef           { $$ = make_ifref($2); LINK($$, $1); }
 222         | gbl_statements coclassdef             { $$ = $1; add_coclass($2); }
 223         | gbl_statements moduledef              { $$ = $1; add_module($2); }
 224         | gbl_statements librarydef             { $$ = $1; }
 225         | gbl_statements statement              { $$ = $1; }
 226         ;
 227
 228 imp_statements:                                 {}
 229         | imp_statements interfacedec           { if (!parse_only) add_interface($2); }
 230         | imp_statements interfacedef           { if (!parse_only) add_interface($2); }
 231         | imp_statements coclassdef             { if (!parse_only) add_coclass($2); }
 232         | imp_statements moduledef              { if (!parse_only) add_module($2); }
 233         | imp_statements statement              {}
 234         ;
 235
 236 int_statements:                                 { $$ = NULL; }
 237         | int_statements funcdef ';'            { $$ = $2; LINK($$, $1); }
 238         | int_statements statement              { $$ = $1; }
 239         ;
 240
 241 statement: ';'                                  {}
 242         | constdef ';'                          { if (!parse_only) { write_constdef($1); } }
 243         | cppquote                              {}
 244         | enumdef ';'                           { if (!parse_only) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n\n"); } }
 245         | externdef ';'                         { if (!parse_only) { write_externdef($1); } }
 246         | import                                {}
 247         | structdef ';'                         { if (!parse_only) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n\n"); } }
 248         | typedef ';'                           {}
 249         | uniondef ';'                          { if (!parse_only) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n\n"); } }
 250         ;
 251
 252 cppquote: tCPPQUOTE '(' aSTRING ')'             { if (!parse_only) fprintf(header, "%s\n", $3); }
 253         ;
 254 import_start: tIMPORT aSTRING ';'               { assert(yychar == YYEMPTY);
 255                                                   if (!do_import($2)) yychar = aEOF; }
 256         ;
 257 import:   import_start imp_statements aEOF      {}
 258         ;
 259
 260 libraryhdr: tLIBRARY aIDENTIFIER                { $$ = $2; }
 261         ;
 262 library_start: attributes libraryhdr '{'        { start_typelib($2, $1); }
 263         ;
 264 librarydef: library_start imp_statements '}'    { end_typelib(); }
 265         ;
 266
 267 m_args:                                         { $$ = NULL; }
 268         | args
 269         ;
 270
 271 no_args:  tVOID                                 { $$ = NULL; }
 272         ;
 273
 274 args:     arg
 275         | args ',' arg                          { LINK($3, $1); $$ = $3; }
 276         | no_args
 277         ;
 278
 279 /* split into two rules to get bison to resolve a tVOID conflict */
 280 arg:      attributes type pident array          { $$ = $3;
 281                                                   set_type($$, $2, $4);
 282                                                   $$->attrs = $1;
 283                                                 }
 284         | type pident array                     { $$ = $2;
 285                                                   set_type($$, $1, $3);
 286                                                 }
 287         | attributes type pident '(' m_args ')' { $$ = $3;
 288                                                   $$->ptr_level--;
 289                                                   set_type($$, $2, NULL);
 290                                                   $$->attrs = $1;
 291                                                   $$->args = $5;
 292                                                 }
 293         | type pident '(' m_args ')'            { $$ = $2;
 294                                                   $$->ptr_level--;
 295                                                   set_type($$, $1, NULL);
 296                                                   $$->args = $4;
 297                                                 }
 298         ;
 299
 300 array:                                          { $$ = NULL; }
 301         | '[' array_list ']'                    { $$ = $2; }
 302         | '[' '*' ']'                           { $$ = make_expr(EXPR_VOID); }
 303         ;
 304
 305 array_list: m_expr /* size of first dimension is optional */
 306         | array_list ',' expr                   { LINK($3, $1); $$ = $3; }
 307         | array_list ']' '[' expr               { LINK($4, $1); $$ = $4; }
 308         ;
 309
 310 m_attributes:                                   { $$ = NULL; }
 311         | attributes
 312         ;
 313
 314 attributes:
 315           '[' attrib_list ']'                   { $$ = $2; }
 316         ;
 317
 318 attrib_list: attribute
 319         | attrib_list ',' attribute             { LINK($3, $1); $$ = $3; }
 320         | attrib_list ']' '[' attribute         { LINK($4, $1); $$ = $4; }
 321         ;
 322
 323 attribute:
 324           tASYNC                                { $$ = make_attr(ATTR_ASYNC); }
 325         | tCALLAS '(' ident ')'                 { $$ = make_attrp(ATTR_CALLAS, $3); }
 326         | tCASE '(' expr_list_const ')'         { $$ = make_attrp(ATTR_CASE, $3); }
 327         | tCONTEXTHANDLE                        { $$ = make_attrv(ATTR_CONTEXTHANDLE, 0); }
 328         | tCONTEXTHANDLENOSERIALIZE             { $$ = make_attrv(ATTR_CONTEXTHANDLE, 0); /* RPC_CONTEXT_HANDLE_DONT_SERIALIZE */ }
 329         | tCONTEXTHANDLESERIALIZE               { $$ = make_attrv(ATTR_CONTEXTHANDLE, 0); /* RPC_CONTEXT_HANDLE_SERIALIZE */ }
 330         | tDEFAULT                              { $$ = make_attr(ATTR_DEFAULT); }
 331         | tDLLNAME '(' aSTRING ')'              { $$ = make_attrp(ATTR_DLLNAME, $3); }
 332         | tDUAL                                 { $$ = make_attr(ATTR_DUAL); }
 333         | tENDPOINT '(' aSTRING ')'             { $$ = make_attrp(ATTR_ENDPOINT, $3); }
 334         | tENTRY '(' aSTRING ')'                { $$ = make_attrp(ATTR_ENTRY_STRING, $3); }
 335         | tENTRY '(' expr_const ')'             { $$ = make_attrp(ATTR_ENTRY_ORDINAL, $3); }
 336         | tHANDLE                               { $$ = make_attr(ATTR_HANDLE); }
 337         | tHELPSTRING '(' aSTRING ')'           { $$ = make_attrp(ATTR_HELPSTRING, $3); }
 338         | tID '(' expr_const ')'                { $$ = make_attrp(ATTR_ID, $3); }
 339         | tIDEMPOTENT                           { $$ = make_attr(ATTR_IDEMPOTENT); }
 340         | tIIDIS '(' ident ')'                  { $$ = make_attrp(ATTR_IIDIS, $3); }
 341         | tIN                                   { $$ = make_attr(ATTR_IN); }
 342         | tINPUTSYNC                            { $$ = make_attr(ATTR_INPUTSYNC); }
 343         | tLENGTHIS '(' m_exprs ')'             { $$ = make_attrp(ATTR_LENGTHIS, $3); }
 344         | tLOCAL                                { $$ = make_attr(ATTR_LOCAL); }
 345         | tOBJECT                               { $$ = make_attr(ATTR_OBJECT); }
 346         | tODL                                  { $$ = make_attr(ATTR_ODL); }
 347         | tOLEAUTOMATION                        { $$ = make_attr(ATTR_OLEAUTOMATION); }
 348         | tOUT                                  { $$ = make_attr(ATTR_OUT); }
 349         | tPOINTERDEFAULT '(' pointer_type ')'  { $$ = make_attrv(ATTR_POINTERDEFAULT, $3); }
 350         | tPUBLIC                               { $$ = make_attr(ATTR_PUBLIC); }
 351         | tREADONLY                             { $$ = make_attr(ATTR_READONLY); }
 352         | tRETVAL                               { $$ = make_attr(ATTR_RETVAL); }
 353         | tSIZEIS '(' m_exprs ')'               { $$ = make_attrp(ATTR_SIZEIS, $3); }
 354         | tSOURCE                               { $$ = make_attr(ATTR_SOURCE); }
 355         | tSTRING                               { $$ = make_attr(ATTR_STRING); }
 356         | tSWITCHIS '(' expr ')'                { $$ = make_attrp(ATTR_SWITCHIS, $3); }
 357         | tSWITCHTYPE '(' type ')'              { $$ = make_attrp(ATTR_SWITCHTYPE, type_ref($3)); }
 358         | tTRANSMITAS '(' type ')'              { $$ = make_attrp(ATTR_TRANSMITAS, type_ref($3)); }
 359         | tUUID '(' aUUID ')'                   { $$ = make_attrp(ATTR_UUID, $3); }
 360         | tV1ENUM                               { $$ = make_attr(ATTR_V1ENUM); }
 361         | tVERSION '(' version ')'              { $$ = make_attrv(ATTR_VERSION, $3); }
 362         | tWIREMARSHAL '(' type ')'             { $$ = make_attrp(ATTR_WIREMARSHAL, type_ref($3)); }
 363         | pointer_type                          { $$ = make_attrv(ATTR_POINTERTYPE, $1); }
 364         ;
 365
 366 callconv:
 367         | tSTDCALL
 368         ;
 369
 370 cases:                                          { $$ = NULL; }
 371         | cases case                            { if ($2) { LINK($2, $1); $$ = $2; }
 372                                                   else { $$ = $1; }
 373                                                 }
 374         ;
 375
 376 case:     tCASE expr ':' field                  { attr_t *a = make_attrp(ATTR_CASE, $2);
 377                                                   $$ = $4; if (!$$) $$ = make_var(NULL);
 378                                                   LINK(a, $$->attrs); $$->attrs = a;
 379                                                 }
 380         | tDEFAULT ':' field                    { attr_t *a = make_attr(ATTR_DEFAULT);
 381                                                   $$ = $3; if (!$$) $$ = make_var(NULL);
 382                                                   LINK(a, $$->attrs); $$->attrs = a;
 383                                                 }
 384         ;
 385
 386 constdef: tCONST type ident '=' expr_const      { $$ = reg_const($3);
 387                                                   set_type($$, $2, NULL);
 388                                                   $$->eval = $5;
 389                                                   $$->lval = $5->cval;
 390                                                 }
 391         ;
 392
 393 enums:                                          { $$ = NULL; }
 394         | enum_list ','                         { $$ = $1; }
 395         | enum_list
 396         ;
 397
 398 enum_list: enum
 399         | enum_list ',' enum                    { LINK($3, $1); $$ = $3;
 400                                                   if ($1 && !$3->eval)
 401                                                     $3->lval = $1->lval + 1;
 402                                                 }
 403         ;
 404
 405 enum:     ident '=' expr_const                  { $$ = reg_const($1);
 406                                                   $$->eval = $3;
 407                                                   $$->lval = $3->cval;
 408                                                 }
 409         | ident                                 { $$ = reg_const($1);
 410                                                   $$->lval = 0; /* default for first enum entry */
 411                                                 }
 412         ;
 413
 414 enumdef: tENUM t_ident '{' enums '}'            { $$ = get_typev(RPC_FC_ENUM16, $2, tsENUM);
 415                                                   $$->fields = $4;
 416                                                   $$->defined = TRUE;
 417                                                 }
 418         ;
 419
 420 m_exprs:  m_expr
 421         | m_exprs ',' m_expr                    { LINK($3, $1); $$ = $3; }
 422         ;
 423
 424 /*
 425 exprs:                                          { $$ = make_expr(EXPR_VOID); }
 426         | expr_list
 427         ;
 428
 429 expr_list: expr
 430         | expr_list ',' expr                    { LINK($3, $1); $$ = $3; }
 431         ;
 432 */
 433
 434 m_expr:                                         { $$ = make_expr(EXPR_VOID); }
 435         | expr
 436         ;
 437
 438 expr:     aNUM                                  { $$ = make_exprl(EXPR_NUM, $1); }
 439         | aHEXNUM                               { $$ = make_exprl(EXPR_HEXNUM, $1); }
 440         | aIDENTIFIER                           { $$ = make_exprs(EXPR_IDENTIFIER, $1); }
 441         | expr '?' expr ':' expr                { $$ = make_expr3(EXPR_COND, $1, $3, $5); }
 442         | expr '|' expr                         { $$ = make_expr2(EXPR_OR , $1, $3); }
 443         | expr '&' expr                         { $$ = make_expr2(EXPR_AND, $1, $3); }
 444         | expr '+' expr                         { $$ = make_expr2(EXPR_ADD, $1, $3); }
 445         | expr '-' expr                         { $$ = make_expr2(EXPR_SUB, $1, $3); }
 446         | expr '*' expr                         { $$ = make_expr2(EXPR_MUL, $1, $3); }
 447         | expr '/' expr                         { $$ = make_expr2(EXPR_DIV, $1, $3); }
 448         | expr SHL expr                         { $$ = make_expr2(EXPR_SHL, $1, $3); }
 449         | expr SHR expr                         { $$ = make_expr2(EXPR_SHR, $1, $3); }
 450         | '~' expr                              { $$ = make_expr1(EXPR_NOT, $2); }
 451         | '-' expr %prec NEG                    { $$ = make_expr1(EXPR_NEG, $2); }
 452         | '*' expr %prec PPTR                   { $$ = make_expr1(EXPR_PPTR, $2); }
 453         | '(' type ')' expr %prec CAST          { $$ = make_exprt(EXPR_CAST, $2, $4); }
 454         | tSIZEOF '(' type ')'                  { $$ = make_exprt(EXPR_SIZEOF, $3, NULL); }
 455         | '(' expr ')'                          { $$ = $2; }
 456         ;
 457
 458 expr_list_const: expr_const
 459         | expr_list_const ',' expr_const        { LINK($3, $1); $$ = $3; }
 460         ;
 461
 462 expr_const: expr                                { $$ = $1;
 463                                                   if (!$$->is_const) yyerror("expression is not constant\n");
 464                                                 }
 465         ;
 466
 467 externdef: tEXTERN tCONST type ident            { $$ = $4;
 468                                                   set_type($$, $3, NULL);
 469                                                 }
 470         ;
 471
 472 fields:                                         { $$ = NULL; }
 473         | fields field                          { if ($2) { LINK($2, $1); $$ = $2; }
 474                                                   else { $$ = $1; }
 475                                                 }
 476         ;
 477
 478 field:    s_field ';'                           { $$ = $1; }
 479         | m_attributes uniondef ';'             { $$ = make_var(NULL); $$->type = $2; $$->attrs = $1; }
 480         | attributes ';'                        { $$ = make_var(NULL); $$->attrs = $1; }
 481         | ';'                                   { $$ = NULL; }
 482         ;
 483
 484 s_field:  m_attributes type pident array        { $$ = $3; set_type($$, $2, $4); $$->attrs = $1; }
 485         ;
 486
 487 funcdef:
 488           m_attributes type callconv pident
 489           '(' m_args ')'                        { set_type($4, $2, NULL);
 490                                                   $4->attrs = $1;
 491                                                   $$ = make_func($4, $6);
 492                                                 }
 493         ;
 494
 495 m_ident:                                        { $$ = NULL; }
 496         | ident
 497         ;
 498
 499 t_ident:                                        { $$ = NULL; }
 500         | aIDENTIFIER                           { $$ = make_var($1); }
 501         | aKNOWNTYPE                            { $$ = make_var($1); }
 502         ;
 503
 504 ident:    aIDENTIFIER                           { $$ = make_var($1); }
 505 /* some "reserved words" used in attributes are also used as field names in some MS IDL files */
 506         | tID                                   { $$ = make_var($<str>1); }
 507         | tRETVAL                               { $$ = make_var($<str>1); }
 508         | tVERSION                              { $$ = make_var($<str>1); }
 509         ;
 510
 511 base_type: tBYTE                                { $$ = make_type(RPC_FC_BYTE, NULL); }
 512         | tWCHAR                                { $$ = make_type(RPC_FC_WCHAR, NULL); }
 513         | int_std
 514         | tSIGNED int_std                       { $$ = $2; $$->sign = 1; }
 515         | tUNSIGNED int_std                     { $$ = $2; $$->sign = -1;
 516                                                   switch ($$->type) {
 517                                                   case RPC_FC_SMALL: $$->type = RPC_FC_USMALL; break;
 518                                                   case RPC_FC_SHORT: $$->type = RPC_FC_USHORT; break;
 519                                                   case RPC_FC_LONG:  $$->type = RPC_FC_ULONG;  break;
 520                                                   case RPC_FC_HYPER:
 521                                                     if (!$$->ref) { $$->ref = &std_uhyper; $$->sign = 0; }
 522                                                     break;
 523                                                   default: break;
 524                                                   }
 525                                                 }
 526         | tFLOAT                                { $$ = make_type(RPC_FC_FLOAT, NULL); }
 527         | tDOUBLE                               { $$ = make_type(RPC_FC_DOUBLE, NULL); }
 528         | tBOOLEAN                              { $$ = make_type(RPC_FC_BYTE, &std_bool); /* ? */ }
 529         | tERRORSTATUST                         { $$ = make_type(RPC_FC_ERROR_STATUS_T, NULL); }
 530         | tHANDLET                              { $$ = make_type(RPC_FC_BIND_PRIMITIVE, NULL); /* ? */ }
 531         ;
 532
 533 m_int:
 534         | tINT
 535         ;
 536
 537 int_std:  tINT                                  { $$ = make_type(RPC_FC_LONG, &std_int); } /* win32 only */
 538         | tSHORT m_int                          { $$ = make_type(RPC_FC_SHORT, NULL); }
 539         | tLONG m_int                           { $$ = make_type(RPC_FC_LONG, NULL); }
 540         | tHYPER m_int                          { $$ = make_type(RPC_FC_HYPER, NULL); }
 541         | tINT64                                { $$ = make_type(RPC_FC_HYPER, &std_int64); }
 542         | tCHAR                                 { $$ = make_type(RPC_FC_CHAR, NULL); }
 543         ;
 544
 545 coclass:  tCOCLASS aIDENTIFIER                  { $$ = make_class($2); }
 546         | tCOCLASS aKNOWNTYPE                   { $$ = make_class($2); }
 547         ;
 548
 549 coclasshdr: attributes coclass                  { $$ = $2;
 550                                                   $$->attrs = $1;
 551                                                 }
 552         ;
 553
 554 coclassdef: coclasshdr '{' coclass_ints '}'     { $$ = $1;
 555                                                   $$->ifaces = $3;
 556                                                 }
 557         ;
 558
 559 coclass_ints:                                   { $$ = NULL; }
 560         | coclass_ints coclass_int              { LINK($2, $1); $$ = $2; }
 561         ;
 562
 563 coclass_int:
 564           m_attributes interfacedec             { $$ = make_ifref($2); $$->attrs = $1; }
 565         ;
 566
 567 dispinterface: tDISPINTERFACE aIDENTIFIER       { $$ = get_type(0, $2, 0); }
 568         |      tDISPINTERFACE aKNOWNTYPE        { $$ = get_type(0, $2, 0); }
 569         ;
 570
 571 dispinterfacehdr: attributes dispinterface      { $$ = $2;
 572                                                   if ($$->defined) yyerror("multiple definition error\n");
 573                                                   $$->attrs = $1;
 574                                                 /*  $$->attrs = make_attr(ATTR_DISPINTERFACE); */
 575                                                 /*  LINK($$->attrs, $1); */
 576                                                   $$->ref = find_type("IDispatch", 0);
 577                                                   if (!$$->ref) yyerror("IDispatch is undefined\n");
 578                                                   $$->defined = TRUE;
 579                                                   if (!parse_only) write_forward($$);
 580                                                 }
 581         ;
 582
 583 dispint_props: tPROPERTIES ':'                  { $$ = NULL; }
 584         | dispint_props s_field ';'             { LINK($2, $1); $$ = $2; }
 585         ;
 586
 587 dispint_meths: tMETHODS ':'                     { $$ = NULL; }
 588         | dispint_meths funcdef ';'             { LINK($2, $1); $$ = $2; }
 589         ;
 590
 591 dispinterfacedef: dispinterfacehdr '{'
 592           dispint_props
 593           dispint_meths
 594           '}'                                   { $$ = $1;
 595                                                   $$->fields = $3;
 596                                                   $$->funcs = $4;
 597                                                   if (!parse_only) write_interface($$);
 598                                                 }
 599 /* FIXME: not sure how to handle this yet
 600         | dispinterfacehdr '{' interface '}'    { $$ = $1;
 601                                                   if (!parse_only) write_interface($$);
 602                                                 }
 603 */
 604         ;
 605
 606 inherit:                                        { $$ = NULL; }
 607         | ':' aKNOWNTYPE                        { $$ = find_type2($2, 0); }
 608         ;
 609
 610 interface: tINTERFACE aIDENTIFIER               { $$ = get_type(RPC_FC_IP, $2, 0); }
 611         |  tINTERFACE aKNOWNTYPE                { $$ = get_type(RPC_FC_IP, $2, 0); }
 612         ;
 613
 614 interfacehdr: attributes interface              { $$ = $2;
 615                                                   if ($$->defined) yyerror("multiple definition error\n");
 616                                                   $$->attrs = $1;
 617                                                   $$->defined = TRUE;
 618                                                   if (!parse_only) write_forward($$);
 619                                                 }
 620         ;
 621
 622 interfacedef: interfacehdr inherit
 623           '{' int_statements '}'                { $$ = $1;
 624                                                   $$->ref = $2;
 625                                                   $$->funcs = $4;
 626                                                   if (!parse_only) write_interface($$);
 627                                                 }
 628 /* MIDL is able to import the definition of a base class from inside the
 629  * definition of a derived class, I'll try to support it with this rule */
 630         | interfacehdr ':' aIDENTIFIER
 631           '{' import int_statements '}'         { $$ = $1;
 632                                                   $$->ref = find_type2($3, 0);
 633                                                   if (!$$->ref) yyerror("base class %s not found in import\n", $3);
 634                                                   $$->funcs = $6;
 635                                                   if (!parse_only) write_interface($$);
 636                                                 }
 637         | dispinterfacedef                      { $$ = $1; }
 638         ;
 639
 640 interfacedec:
 641           interface ';'                         { $$ = $1; if (!parse_only) write_forward($$); }
 642         | dispinterface ';'                     { $$ = $1; if (!parse_only) write_forward($$); }
 643         ;
 644
 645 module:   tMODULE aIDENTIFIER                   { $$ = make_type(0, NULL); $$->name = $2; }
 646         | tMODULE aKNOWNTYPE                    { $$ = make_type(0, NULL); $$->name = $2; }
 647         ;
 648
 649 modulehdr: attributes module                    { $$ = $2;
 650                                                   $$->attrs = $1;
 651                                                 }
 652         ;
 653
 654 moduledef: modulehdr '{' int_statements '}'     { $$ = $1;
 655                                                   $$->funcs = $3;
 656                                                   /* FIXME: if (!parse_only) write_module($$); */
 657                                                 }
 658         ;
 659
 660 p_ident:  '*' pident %prec PPTR                 { $$ = $2; $$->ptr_level++; }
 661         | tCONST p_ident                        { $$ = $2; /* FIXME */ }
 662         ;
 663
 664 pident:   ident
 665         | p_ident
 666         | '(' pident ')'                        { $$ = $2; }
 667         ;
 668
 669 pident_list:
 670           pident
 671         | pident_list ',' pident                { LINK($3, $1); $$ = $3; }
 672         ;
 673
 674 pointer_type:
 675           tREF                                  { $$ = RPC_FC_RP; }
 676         | tUNIQUE                               { $$ = RPC_FC_UP; }
 677         ;
 678
 679 structdef: tSTRUCT t_ident '{' fields '}'       { $$ = get_typev(RPC_FC_STRUCT, $2, tsSTRUCT);
 680                                                   /* overwrite RPC_FC_STRUCT with a more exact type */
 681                                                   $$->type = get_struct_type( $4 );
 682                                                   $$->fields = $4;
 683                                                   $$->defined = TRUE;
 684                                                 }
 685         ;
 686
 687 type:     tVOID                                 { $$ = make_tref(NULL, make_type(0, NULL)); }
 688         | aKNOWNTYPE                            { $$ = make_tref($1, find_type($1, 0)); }
 689         | base_type                             { $$ = make_tref(NULL, $1); }
 690         | tCONST type                           { $$ = uniq_tref($2); $$->ref->is_const = TRUE; }
 691         | enumdef                               { $$ = make_tref(NULL, $1); }
 692         | tENUM aIDENTIFIER                     { $$ = make_tref(NULL, find_type2($2, tsENUM)); }
 693         | structdef                             { $$ = make_tref(NULL, $1); }
 694         | tSTRUCT aIDENTIFIER                   { $$ = make_tref(NULL, get_type(RPC_FC_STRUCT, $2, tsSTRUCT)); }
 695         | uniondef                              { $$ = make_tref(NULL, $1); }
 696         | tUNION aIDENTIFIER                    { $$ = make_tref(NULL, find_type2($2, tsUNION)); }
 697         ;
 698
 699 typedef: tTYPEDEF m_attributes type pident_list { typeref_t *tref = uniq_tref($3);
 700                                                   $4->tname = tref->name;
 701                                                   tref->name = NULL;
 702                                                   $$ = type_ref(tref);
 703                                                   $$->attrs = $2;
 704                                                   if (!parse_only) write_typedef($$, $4);
 705                                                   reg_types($$, $4, 0);
 706                                                 }
 707         ;
 708
 709 uniondef: tUNION t_ident '{' fields '}'         { $$ = get_typev(RPC_FC_NON_ENCAPSULATED_UNION, $2, tsUNION);
 710                                                   $$->fields = $4;
 711                                                   $$->defined = TRUE;
 712                                                 }
 713         | tUNION t_ident
 714           tSWITCH '(' s_field ')'
 715           m_ident '{' cases '}'                 { var_t *u = $7;
 716                                                   $$ = get_typev(RPC_FC_ENCAPSULATED_UNION, $2, tsUNION);
 717                                                   if (!u) u = make_var("tagged_union");
 718                                                   u->type = make_type(RPC_FC_NON_ENCAPSULATED_UNION, NULL);
 719                                                   u->type->fields = $9;
 720                                                   u->type->defined = TRUE;
 721                                                   LINK(u, $5); $$->fields = u;
 722                                                   $$->defined = TRUE;
 723                                                 }
 724         ;
 725
 726 version:
 727           aNUM                                  { $$ = MAKELONG($1, 0); }
 728         | aNUM '.' aNUM                         { $$ = MAKELONG($1, $3); }
 729         ;
 730
 731 %%
 732
 733 static attr_t *make_attr(enum attr_type type)
 734 {
 735   attr_t *a = xmalloc(sizeof(attr_t));
 736   a->type = type;
 737   a->u.ival = 0;
 738   INIT_LINK(a);
 739   return a;
 740 }
 741
 742 static attr_t *make_attrv(enum attr_type type, unsigned long val)
 743 {
 744   attr_t *a = xmalloc(sizeof(attr_t));
 745   a->type = type;
 746   a->u.ival = val;
 747   INIT_LINK(a);
 748   return a;
 749 }
 750
 751 static attr_t *make_attrp(enum attr_type type, void *val)
 752 {
 753   attr_t *a = xmalloc(sizeof(attr_t));
 754   a->type = type;
 755   a->u.pval = val;
 756   INIT_LINK(a);
 757   return a;
 758 }
 759
 760 static expr_t *make_expr(enum expr_type type)
 761 {
 762   expr_t *e = xmalloc(sizeof(expr_t));
 763   e->type = type;
 764   e->ref = NULL;
 765   e->u.lval = 0;
 766   e->is_const = FALSE;
 767   INIT_LINK(e);
 768   return e;
 769 }
 770
 771 static expr_t *make_exprl(enum expr_type type, long val)
 772 {
 773   expr_t *e = xmalloc(sizeof(expr_t));
 774   e->type = type;
 775   e->ref = NULL;
 776   e->u.lval = val;
 777   e->is_const = FALSE;
 778   INIT_LINK(e);
 779   /* check for numeric constant */
 780   if (type == EXPR_NUM || type == EXPR_HEXNUM) {
 781     e->is_const = TRUE;
 782     e->cval = val;
 783   }
 784   return e;
 785 }
 786
 787 static expr_t *make_exprs(enum expr_type type, char *val)
 788 {
 789   expr_t *e;
 790   e = xmalloc(sizeof(expr_t));
 791   e->type = type;
 792   e->ref = NULL;
 793   e->u.sval = val;
 794   e->is_const = FALSE;
 795   INIT_LINK(e);
 796   /* check for predefined constants */
 797   if (type == EXPR_IDENTIFIER) {
 798     var_t *c = find_const(val, 0);
 799     if (c) {
 800       e->u.sval = c->name;
 801       free(val);
 802       e->is_const = TRUE;
 803       e->cval = c->lval;
 804     }
 805   }
 806   return e;
 807 }
 808
 809 static expr_t *make_exprt(enum expr_type type, typeref_t *tref, expr_t *expr)
 810 {
 811   expr_t *e;
 812   e = xmalloc(sizeof(expr_t));
 813   e->type = type;
 814   e->ref = expr;
 815   e->u.tref = tref;
 816   e->is_const = FALSE;
 817   INIT_LINK(e);
 818   /* check for cast of constant expression */
 819   if (type == EXPR_CAST && expr->is_const) {
 820     e->is_const = TRUE;
 821     e->cval = expr->cval;
 822   }
 823   return e;
 824 }
 825
 826 static expr_t *make_expr1(enum expr_type type, expr_t *expr)
 827 {
 828   expr_t *e;
 829   e = xmalloc(sizeof(expr_t));
 830   e->type = type;
 831   e->ref = expr;
 832   e->u.lval = 0;
 833   e->is_const = FALSE;
 834   INIT_LINK(e);
 835   /* check for compile-time optimization */
 836   if (expr->is_const) {
 837     e->is_const = TRUE;
 838     switch (type) {
 839     case EXPR_NEG:
 840       e->cval = -expr->cval;
 841       break;
 842     case EXPR_NOT:
 843       e->cval = ~expr->cval;
 844       break;
 845     default:
 846       e->is_const = FALSE;
 847       break;
 848     }
 849   }
 850   return e;
 851 }
 852
 853 static expr_t *make_expr2(enum expr_type type, expr_t *expr1, expr_t *expr2)
 854 {
 855   expr_t *e;
 856   e = xmalloc(sizeof(expr_t));
 857   e->type = type;
 858   e->ref = expr1;
 859   e->u.ext = expr2;
 860   e->is_const = FALSE;
 861   INIT_LINK(e);
 862   /* check for compile-time optimization */
 863   if (expr1->is_const && expr2->is_const) {
 864     e->is_const = TRUE;
 865     switch (type) {
 866     case EXPR_ADD:
 867       e->cval = expr1->cval + expr2->cval;
 868       break;
 869     case EXPR_SUB:
 870       e->cval = expr1->cval - expr2->cval;
 871       break;
 872     case EXPR_MUL:
 873       e->cval = expr1->cval * expr2->cval;
 874       break;
 875     case EXPR_DIV:
 876       e->cval = expr1->cval / expr2->cval;
 877       break;
 878     case EXPR_OR:
 879       e->cval = expr1->cval | expr2->cval;
 880       break;
 881     case EXPR_AND:
 882       e->cval = expr1->cval & expr2->cval;
 883       break;
 884     case EXPR_SHL:
 885       e->cval = expr1->cval << expr2->cval;
 886       break;
 887     case EXPR_SHR:
 888       e->cval = expr1->cval >> expr2->cval;
 889       break;
 890     default:
 891       e->is_const = FALSE;
 892       break;
 893     }
 894   }
 895   return e;
 896 }
 897
 898 static expr_t *make_expr3(enum expr_type type, expr_t *expr1, expr_t *expr2, expr_t *expr3)
 899 {
 900   expr_t *e;
 901   e = xmalloc(sizeof(expr_t));
 902   e->type = type;
 903   e->ref = expr1;
 904   e->u.ext = expr2;
 905   e->ext2 = expr3;
 906   e->is_const = FALSE;
 907   INIT_LINK(e);
 908   /* check for compile-time optimization */
 909   if (expr1->is_const && expr2->is_const && expr3->is_const) {
 910     e->is_const = TRUE;
 911     switch (type) {
 912     case EXPR_COND:
 913       e->cval = expr1->cval ? expr2->cval : expr3->cval;
 914       break;
 915     default:
 916       e->is_const = FALSE;
 917       break;
 918     }
 919   }
 920   return e;
 921 }
 922
 923 static type_t *make_type(unsigned char type, type_t *ref)
 924 {
 925   type_t *t = xmalloc(sizeof(type_t));
 926   t->name = NULL;
 927   t->type = type;
 928   t->ref = ref;
 929   t->rname = NULL;
 930   t->attrs = NULL;
 931   t->funcs = NULL;
 932   t->fields = NULL;
 933   t->ignore = parse_only;
 934   t->is_const = FALSE;
 935   t->sign = 0;
 936   t->defined = FALSE;
 937   t->written = FALSE;
 938   INIT_LINK(t);
 939   return t;
 940 }
 941
 942 static typeref_t *make_tref(char *name, type_t *ref)
 943 {
 944   typeref_t *t = xmalloc(sizeof(typeref_t));
 945   t->name = name;
 946   t->ref = ref;
 947   t->uniq = ref ? 0 : 1;
 948   return t;
 949 }
 950
 951 static typeref_t *uniq_tref(typeref_t *ref)
 952 {
 953   typeref_t *t = ref;
 954   type_t *tp;
 955   if (t->uniq) return t;
 956   tp = make_type(0, t->ref);
 957   tp->name = t->name;
 958   t->name = NULL;
 959   t->ref = tp;
 960   t->uniq = 1;
 961   return t;
 962 }
 963
 964 static type_t *type_ref(typeref_t *ref)
 965 {
 966   type_t *t = ref->ref;
 967   if (ref->name) free(ref->name);
 968   free(ref);
 969   return t;
 970 }
 971
 972 static void set_type(var_t *v, typeref_t *ref, expr_t *arr)
 973 {
 974   v->type = ref->ref;
 975   v->tname = ref->name;
 976   ref->name = NULL;
 977   free(ref);
 978   v->array = arr;
 979 }
 980
 981 static ifref_t *make_ifref(type_t *iface)
 982 {
 983   ifref_t *l = xmalloc(sizeof(ifref_t));
 984   l->iface = iface;
 985   l->attrs = NULL;
 986   INIT_LINK(l);
 987   return l;
 988 }
 989
 990 static var_t *make_var(char *name)
 991 {
 992   var_t *v = xmalloc(sizeof(var_t));
 993   v->name = name;
 994   v->ptr_level = 0;
 995   v->type = NULL;
 996   v->tname = NULL;
 997   v->attrs = NULL;
 998   v->array = NULL;
 999   v->eval = NULL;
1000   v->lval = 0;
1001   INIT_LINK(v);
1002   return v;
1003 }
1004
1005 static func_t *make_func(var_t *def, var_t *args)
1006 {
1007   func_t *f = xmalloc(sizeof(func_t));
1008   f->def = def;
1009   f->args = args;
1010   f->ignore = parse_only;
1011   f->idx = -1;
1012   INIT_LINK(f);
1013   return f;
1014 }
1015
1016 static class_t *make_class(char *name)
1017 {
1018   class_t *c = xmalloc(sizeof(class_t));
1019   c->name = name;
1020   c->attrs = NULL;
1021   c->ifaces = NULL;
1022   INIT_LINK(c);
1023   return c;
1024 }
1025
1026 #define HASHMAX 64
1027
1028 static int hash_ident(const char *name)
1029 {
1030   const char *p = name;
1031   int sum = 0;
1032   /* a simple sum hash is probably good enough */
1033   while (*p) {
1034     sum += *p;
1035     p++;
1036   }
1037   return sum & (HASHMAX-1);
1038 }
1039
1040 /***** type repository *****/
1041
1042 struct rtype {
1043   char *name;
1044   type_t *type;
1045   int t;
1046   struct rtype *next;
1047 };
1048
1049 struct rtype *type_hash[HASHMAX];
1050
1051 static type_t *reg_type(type_t *type, char *name, int t)
1052 {
1053   struct rtype *nt;
1054   int hash;
1055   if (!name) {
1056     yyerror("registering named type without name\n");
1057     return type;
1058   }
1059   hash = hash_ident(name);
1060   nt = xmalloc(sizeof(struct rtype));
1061   nt->name = name;
1062   nt->type = type;
1063   nt->t = t;
1064   nt->next = type_hash[hash];
1065   type_hash[hash] = nt;
1066   return type;
1067 }
1068
1069 /* determine pointer type from attrs */
1070 static unsigned char get_pointer_type( type_t *type )
1071 {
1072     int t = get_attrv( type->attrs, ATTR_POINTERTYPE );
1073     if( t ) return t;
1074     return RPC_FC_FP;
1075 }
1076
1077 static type_t *reg_types(type_t *type, var_t *names, int t)
1078 {
1079   type_t *ptr = type;
1080   int ptrc = 0;
1081
1082   while (names) {
1083     var_t *next = NEXT_LINK(names);
1084     if (names->name) {
1085       type_t *cur = ptr;
1086       int cptr = names->ptr_level;
1087       if (cptr > ptrc) {
1088         while (cptr > ptrc) {
1089           int t = get_pointer_type( cur );
1090           cur = ptr = make_type(t, cur);
1091           ptrc++;
1092         }
1093       } else {
1094         while (cptr < ptrc) {
1095           cur = cur->ref;
1096           cptr++;
1097         }
1098       }
1099       reg_type(cur, names->name, t);
1100     }
1101     free(names);
1102     names = next;
1103   }
1104   return type;
1105 }
1106
1107 static type_t *find_type(char *name, int t)
1108 {
1109   struct rtype *cur = type_hash[hash_ident(name)];
1110   while (cur && (cur->t != t || strcmp(cur->name, name)))
1111     cur = cur->next;
1112   if (!cur) {
1113     yyerror("type %s not found\n", name);
1114     return NULL;
1115   }
1116   return cur->type;
1117 }
1118
1119 static type_t *find_type2(char *name, int t)
1120 {
1121   type_t *tp = find_type(name, t);
1122   free(name);
1123   return tp;
1124 }
1125
1126 int is_type(const char *name)
1127 {
1128   struct rtype *cur = type_hash[hash_ident(name)];
1129   while (cur && (cur->t || strcmp(cur->name, name)))
1130     cur = cur->next;
1131   if (cur) return TRUE;
1132   return FALSE;
1133 }
1134
1135 static type_t *get_type(unsigned char type, char *name, int t)
1136 {
1137   struct rtype *cur = NULL;
1138   type_t *tp;
1139   if (name) {
1140     cur = type_hash[hash_ident(name)];
1141     while (cur && (cur->t != t || strcmp(cur->name, name)))
1142       cur = cur->next;
1143   }
1144   if (cur) {
1145     free(name);
1146     return cur->type;
1147   }
1148   tp = make_type(type, NULL);
1149   tp->name = name;
1150   if (!name) return tp;
1151   return reg_type(tp, name, t);
1152 }
1153
1154 static type_t *get_typev(unsigned char type, var_t *name, int t)
1155 {
1156   char *sname = NULL;
1157   if (name) {
1158     sname = name->name;
1159     free(name);
1160   }
1161   return get_type(type, sname, t);
1162 }
1163
1164 static int get_struct_type(var_t *field)
1165 {
1166   int has_pointer = 0;
1167   int has_conformant_array = 0;
1168   int has_conformant_string = 0;
1169
1170   while (field)
1171   {
1172     type_t *t = field->type;
1173
1174     /* get the base type */
1175     while( (t->type == 0) && t->ref )
1176       t = t->ref;
1177
1178     switch (t->type)
1179     {
1180     /*
1181      * RPC_FC_BYTE, RPC_FC_STRUCT, etc
1182      *  Simple types don't effect the type of struct.
1183      *  A struct containing a simple struct is still a simple struct.
1184      *  So long as we can block copy the data, we return RPC_FC_STRUCT.
1185      */
1186     case 0: /* void pointer */
1187     case RPC_FC_BYTE:
1188     case RPC_FC_CHAR:
1189     case RPC_FC_SMALL:
1190     case RPC_FC_USMALL:
1191     case RPC_FC_WCHAR:
1192     case RPC_FC_SHORT:
1193     case RPC_FC_USHORT:
1194     case RPC_FC_LONG:
1195     case RPC_FC_ULONG:
1196     case RPC_FC_INT3264:
1197     case RPC_FC_UINT3264:
1198     case RPC_FC_HYPER:
1199     case RPC_FC_FLOAT:
1200     case RPC_FC_DOUBLE:
1201     case RPC_FC_STRUCT:
1202     case RPC_FC_ENUM16:
1203     case RPC_FC_ENUM32:
1204       break;
1205
1206     case RPC_FC_UP:
1207     case RPC_FC_FP:
1208       has_pointer = 1;
1209       break;
1210     case RPC_FC_CARRAY:
1211       has_conformant_array = 1;
1212       break;
1213     case RPC_FC_C_CSTRING:
1214     case RPC_FC_C_WSTRING:
1215       has_conformant_string = 1;
1216       break;
1217
1218     /*
1219      * Propagate member attributes
1220      *  a struct should be at least as complex as its member
1221      */
1222     case RPC_FC_CVSTRUCT:
1223       has_conformant_string = 1;
1224       has_pointer = 1;
1225       break;
1226
1227     case RPC_FC_CPSTRUCT:
1228       has_conformant_array = 1;
1229       has_pointer = 1;
1230       break;
1231
1232     case RPC_FC_CSTRUCT:
1233       has_conformant_array = 1;
1234       break;
1235
1236     case RPC_FC_PSTRUCT:
1237       has_pointer = 1;
1238       break;
1239
1240     default:
1241       fprintf(stderr,"Unknown struct member %s with type (0x%02x)\n",
1242               field->name, t->type);
1243       /* fallthru - treat it as complex */
1244
1245     /* as soon as we see one of these these members, it's bogus... */
1246     case RPC_FC_IP:
1247     case RPC_FC_ENCAPSULATED_UNION:
1248     case RPC_FC_NON_ENCAPSULATED_UNION:
1249     case RPC_FC_TRANSMIT_AS:
1250     case RPC_FC_REPRESENT_AS:
1251     case RPC_FC_PAD:
1252     case RPC_FC_EMBEDDED_COMPLEX:
1253     case RPC_FC_BOGUS_STRUCT:
1254       return RPC_FC_BOGUS_STRUCT;
1255     }
1256     field = NEXT_LINK(field);
1257   }
1258
1259   if( has_conformant_string && has_pointer )
1260     return RPC_FC_CVSTRUCT;
1261   if( has_conformant_array && has_pointer )
1262     return RPC_FC_CPSTRUCT;
1263   if( has_conformant_array )
1264     return RPC_FC_CSTRUCT;
1265   if( has_pointer )
1266     return RPC_FC_PSTRUCT;
1267   return RPC_FC_STRUCT;
1268 }
1269
1270 /***** constant repository *****/
1271
1272 struct rconst {
1273   char *name;
1274   var_t *var;
1275   struct rconst *next;
1276 };
1277
1278 struct rconst *const_hash[HASHMAX];
1279
1280 static var_t *reg_const(var_t *var)
1281 {
1282   struct rconst *nc;
1283   int hash;
1284   if (!var->name) {
1285     yyerror("registering constant without name\n");
1286     return var;
1287   }
1288   hash = hash_ident(var->name);
1289   nc = xmalloc(sizeof(struct rconst));
1290   nc->name = var->name;
1291   nc->var = var;
1292   nc->next = const_hash[hash];
1293   const_hash[hash] = nc;
1294   return var;
1295 }
1296
1297 static var_t *find_const(char *name, int f)
1298 {
1299   struct rconst *cur = const_hash[hash_ident(name)];
1300   while (cur && strcmp(cur->name, name))
1301     cur = cur->next;
1302   if (!cur) {
1303     if (f) yyerror("constant %s not found\n", name);
1304     return NULL;
1305   }
1306   return cur->var;
1307 }