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 "windef.h"
  35
  36 #include "widl.h"
  37 #include "utils.h"
  38 #include "parser.h"
  39 #include "header.h"
  40 #include "typelib.h"
  41
  42 #if defined(YYBYACC)
  43         /* Berkeley yacc (byacc) doesn't seem to know about these */
  44         /* Some *BSD supplied versions do define these though */
  45 # ifndef YYEMPTY
  46 #  define YYEMPTY       (-1)    /* Empty lookahead value of yychar */
  47 # endif
  48 # ifndef YYLEX
  49 #  define YYLEX         yylex()
  50 # endif
  51
  52 #elif defined(YYBISON)
  53         /* Bison was used for original development */
  54         /* #define YYEMPTY -2 */
  55         /* #define YYLEX   yylex() */
  56
  57 #else
  58         /* No yacc we know yet */
  59 # if !defined(YYEMPTY) || !defined(YYLEX)
  60 #  error Yacc version/type unknown. This version needs to be verified for settings of YYEMPTY and YYLEX.
  61 # elif defined(__GNUC__)        /* gcc defines the #warning directive */
  62 #  warning Yacc version/type unknown. It defines YYEMPTY and YYLEX, but is not tested
  63   /* #else we just take a chance that it works... */
  64 # endif
  65 #endif
  66
  67 static attr_t *make_attr(enum attr_type type);
  68 static attr_t *make_attrv(enum attr_type type, unsigned long val);
  69 static attr_t *make_attrp(enum attr_type type, void *val);
  70 static expr_t *make_expr(enum expr_type type);
  71 static expr_t *make_exprl(enum expr_type type, long val);
  72 static expr_t *make_exprs(enum expr_type type, char *val);
  73 static expr_t *make_exprt(enum expr_type type, typeref_t *tref, expr_t *expr);
  74 static expr_t *make_expr1(enum expr_type type, expr_t *expr);
  75 static expr_t *make_expr2(enum expr_type type, expr_t *exp1, expr_t *exp2);
  76 static expr_t *make_expr3(enum expr_type type, expr_t *expr1, expr_t *expr2, expr_t *expr3);
  77 static type_t *make_type(unsigned char type, type_t *ref);
  78 static typeref_t *make_tref(char *name, type_t *ref);
  79 static typeref_t *uniq_tref(typeref_t *ref);
  80 static type_t *type_ref(typeref_t *ref);
  81 static void set_type(var_t *v, typeref_t *ref, expr_t *arr);
  82 static ifref_t *make_ifref(type_t *iface);
  83 static var_t *make_var(char *name);
  84 static func_t *make_func(var_t *def, var_t *args);
  85 static class_t *make_class(char *name);
  86
  87 static type_t *reg_type(type_t *type, char *name, int t);
  88 static type_t *reg_types(type_t *type, var_t *names, int t);
  89 static type_t *find_type(char *name, int t);
  90 static type_t *find_type2(char *name, int t);
  91 static type_t *get_type(unsigned char type, char *name, int t);
  92 static type_t *get_typev(unsigned char type, var_t *name, int t);
  93 static int get_struct_type(var_t *fields);
  94
  95 static var_t *reg_const(var_t *var);
  96 static var_t *find_const(char *name, int f);
  97
  98 #define tsENUM   1
  99 #define tsSTRUCT 2
 100 #define tsUNION  3
 101
 102 static type_t std_bool = { "boolean" };
 103 static type_t std_int = { "int" };
 104 static type_t std_int64 = { "__int64" };
 105 static type_t std_uhyper = { "MIDL_uhyper" };
 106
 107 %}
 108 %union {
 109         attr_t *attr;
 110         expr_t *expr;
 111         type_t *type;
 112         typeref_t *tref;
 113         var_t *var;
 114         func_t *func;
 115         ifref_t *ifref;
 116         class_t *clas;
 117         char *str;
 118         UUID *uuid;
 119         unsigned int num;
 120 }
 121
 122 %token <str> aIDENTIFIER
 123 %token <str> aKNOWNTYPE
 124 %token <num> aNUM aHEXNUM
 125 %token <str> aSTRING
 126 %token <uuid> aUUID
 127 %token aEOF
 128 %token SHL SHR
 129 %token tAGGREGATABLE tALLOCATE tAPPOBJECT tARRAYS tASYNC tASYNCUUID
 130 %token tAUTOHANDLE tBINDABLE tBOOLEAN tBROADCAST tBYTE tBYTECOUNT
 131 %token tCALLAS tCALLBACK tCASE tCDECL tCHAR tCOCLASS tCODE tCOMMSTATUS
 132 %token tCONST tCONTEXTHANDLE tCONTEXTHANDLENOSERIALIZE
 133 %token tCONTEXTHANDLESERIALIZE tCONTROL tCPPQUOTE
 134 %token tDEFAULT
 135 %token tDEFAULTVALUE
 136 %token tDISPINTERFACE
 137 %token tDLLNAME tDOUBLE tDUAL
 138 %token tENDPOINT
 139 %token tENTRY tENUM tERRORSTATUST
 140 %token tEXPLICITHANDLE tEXTERN
 141 %token tFLOAT
 142 %token tHANDLE
 143 %token tHANDLET
 144 %token tHELPCONTEXT tHELPFILE
 145 %token tHELPSTRING tHELPSTRINGCONTEXT tHELPSTRINGDLL
 146 %token tHIDDEN
 147 %token tHYPER tID tIDEMPOTENT
 148 %token tIIDIS
 149 %token tIMPLICITHANDLE
 150 %token tIMPORT tIMPORTLIB
 151 %token tIN tINCLUDE tINLINE
 152 %token tINPUTSYNC
 153 %token tINT tINT64
 154 %token tINTERFACE
 155 %token tLENGTHIS tLIBRARY
 156 %token tLOCAL
 157 %token tLONG
 158 %token tMETHODS
 159 %token tMODULE
 160 %token tNONCREATABLE
 161 %token tOBJECT tODL tOLEAUTOMATION
 162 %token tOPTIONAL
 163 %token tOUT
 164 %token tPOINTERDEFAULT
 165 %token tPROPERTIES
 166 %token tPROPGET tPROPPUT tPROPPUTREF
 167 %token tPUBLIC
 168 %token tREADONLY tREF
 169 %token tRESTRICTED
 170 %token tRETVAL
 171 %token tSHORT
 172 %token tSIGNED
 173 %token tSIZEIS tSIZEOF
 174 %token tSOURCE
 175 %token tSTDCALL
 176 %token tSTRING tSTRUCT
 177 %token tSWITCH tSWITCHIS tSWITCHTYPE
 178 %token tTRANSMITAS
 179 %token tTYPEDEF
 180 %token tUNION
 181 %token tUNIQUE
 182 %token tUNSIGNED
 183 %token tUUID
 184 %token tV1ENUM
 185 %token tVARARG
 186 %token tVERSION
 187 %token tVOID
 188 %token tWCHAR tWIREMARSHAL
 189
 190 /* used in attr_t */
 191 %token tPOINTERTYPE
 192
 193 %type <attr> m_attributes attributes attrib_list attribute
 194 %type <expr> m_exprs /* exprs expr_list */ m_expr expr expr_list_const expr_const
 195 %type <expr> array array_list
 196 %type <type> inherit interface interfacehdr interfacedef interfacedec
 197 %type <type> dispinterface dispinterfacehdr dispinterfacedef
 198 %type <type> module modulehdr moduledef
 199 %type <type> base_type int_std
 200 %type <type> enumdef structdef typedef uniondef
 201 %type <ifref> gbl_statements coclass_ints coclass_int
 202 %type <tref> type
 203 %type <var> m_args no_args args arg
 204 %type <var> fields field s_field cases case enums enum_list enum constdef externdef
 205 %type <var> m_ident t_ident ident p_ident pident pident_list
 206 %type <var> dispint_props
 207 %type <func> funcdef int_statements
 208 %type <func> dispint_meths
 209 %type <clas> coclass coclasshdr coclassdef
 210 %type <num> pointer_type version
 211 %type <str> libraryhdr
 212
 213 %left ','
 214 %right COND
 215 %left '|'
 216 %left '&'
 217 %left '-' '+'
 218 %left '*' '/'
 219 %left SHL SHR
 220 %right '~'
 221 %right CAST
 222 %right PPTR
 223 %right NEG
 224
 225 %%
 226
 227 input:   gbl_statements                        { write_proxies($1); write_client($1); write_server($1); }
 228         ;
 229
 230 gbl_statements:                                 { $$ = NULL; }
 231         | gbl_statements interfacedec           { $$ = $1; }
 232         | gbl_statements interfacedef           { $$ = make_ifref($2); LINK($$, $1); }
 233         | gbl_statements coclassdef             { $$ = $1; add_coclass($2); }
 234         | gbl_statements moduledef              { $$ = $1; add_module($2); }
 235         | gbl_statements librarydef             { $$ = $1; }
 236         | gbl_statements statement              { $$ = $1; }
 237         ;
 238
 239 imp_statements:                                 {}
 240         | imp_statements interfacedec           { if (!parse_only) add_interface($2); }
 241         | imp_statements interfacedef           { if (!parse_only) add_interface($2); }
 242         | imp_statements coclassdef             { if (!parse_only) add_coclass($2); }
 243         | imp_statements moduledef              { if (!parse_only) add_module($2); }
 244         | imp_statements statement              {}
 245         ;
 246
 247 int_statements:                                 { $$ = NULL; }
 248         | int_statements funcdef ';'            { $$ = $2; LINK($$, $1); }
 249         | int_statements statement              { $$ = $1; }
 250         ;
 251
 252 statement: ';'                                  {}
 253         | constdef ';'                          { if (!parse_only && do_header) { write_constdef($1); } }
 254         | cppquote                              {}
 255         | enumdef ';'                           { if (!parse_only && do_header) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n\n"); } }
 256         | externdef ';'                         { if (!parse_only && do_header) { write_externdef($1); } }
 257         | import                                {}
 258         | structdef ';'                         { if (!parse_only && do_header) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n\n"); } }
 259         | typedef ';'                           {}
 260         | uniondef ';'                          { if (!parse_only && do_header) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n\n"); } }
 261         ;
 262
 263 cppquote: tCPPQUOTE '(' aSTRING ')'             { if (!parse_only && do_header) fprintf(header, "%s\n", $3); }
 264         ;
 265 import_start: tIMPORT aSTRING ';'               { assert(yychar == YYEMPTY);
 266                                                   if (!do_import($2)) yychar = aEOF; }
 267         ;
 268 import:   import_start imp_statements aEOF      {}
 269         ;
 270
 271 libraryhdr: tLIBRARY aIDENTIFIER                { $$ = $2; }
 272         ;
 273 library_start: attributes libraryhdr '{'        { start_typelib($2, $1);
 274                                                   if (!parse_only && do_header) write_library($2, $1); }
 275         ;
 276 librarydef: library_start imp_statements '}'    { end_typelib(); }
 277         ;
 278
 279 m_args:                                         { $$ = NULL; }
 280         | args
 281         ;
 282
 283 no_args:  tVOID                                 { $$ = NULL; }
 284         ;
 285
 286 args:     arg
 287         | args ',' arg                          { LINK($3, $1); $$ = $3; }
 288         | no_args
 289         ;
 290
 291 /* split into two rules to get bison to resolve a tVOID conflict */
 292 arg:      attributes type pident array          { $$ = $3;
 293                                                   set_type($$, $2, $4);
 294                                                   $$->attrs = $1;
 295                                                 }
 296         | type pident array                     { $$ = $2;
 297                                                   set_type($$, $1, $3);
 298                                                 }
 299         | attributes type pident '(' m_args ')' { $$ = $3;
 300                                                   $$->ptr_level--;
 301                                                   set_type($$, $2, NULL);
 302                                                   $$->attrs = $1;
 303                                                   $$->args = $5;
 304                                                 }
 305         | type pident '(' m_args ')'            { $$ = $2;
 306                                                   $$->ptr_level--;
 307                                                   set_type($$, $1, NULL);
 308                                                   $$->args = $4;
 309                                                 }
 310         ;
 311
 312 array:                                          { $$ = NULL; }
 313         | '[' array_list ']'                    { $$ = $2; }
 314         | '[' '*' ']'                           { $$ = make_expr(EXPR_VOID); }
 315         ;
 316
 317 array_list: m_expr /* size of first dimension is optional */
 318         | array_list ',' expr                   { LINK($3, $1); $$ = $3; }
 319         | array_list ']' '[' expr               { LINK($4, $1); $$ = $4; }
 320         ;
 321
 322 m_attributes:                                   { $$ = NULL; }
 323         | attributes
 324         ;
 325
 326 attributes:
 327           '[' attrib_list ']'                   { $$ = $2; }
 328         ;
 329
 330 attrib_list: attribute
 331         | attrib_list ',' attribute             { LINK($3, $1); $$ = $3; }
 332         | attrib_list ']' '[' attribute         { LINK($4, $1); $$ = $4; }
 333         ;
 334
 335 attribute:
 336           tASYNC                                { $$ = make_attr(ATTR_ASYNC); }
 337         | tAUTOHANDLE                           { $$ = make_attr(ATTR_AUTO_HANDLE); }
 338         | tCALLAS '(' ident ')'                 { $$ = make_attrp(ATTR_CALLAS, $3); }
 339         | tCASE '(' expr_list_const ')'         { $$ = make_attrp(ATTR_CASE, $3); }
 340         | tCONTEXTHANDLE                        { $$ = make_attrv(ATTR_CONTEXTHANDLE, 0); }
 341         | tCONTEXTHANDLENOSERIALIZE             { $$ = make_attrv(ATTR_CONTEXTHANDLE, 0); /* RPC_CONTEXT_HANDLE_DONT_SERIALIZE */ }
 342         | tCONTEXTHANDLESERIALIZE               { $$ = make_attrv(ATTR_CONTEXTHANDLE, 0); /* RPC_CONTEXT_HANDLE_SERIALIZE */ }
 343         | tCONTROL                              { $$ = make_attr(ATTR_CONTROL); }
 344         | tDEFAULT                              { $$ = make_attr(ATTR_DEFAULT); }
 345         | tDEFAULTVALUE '(' expr_const ')'      { $$ = make_attrp(ATTR_DEFAULTVALUE_EXPR, $3); }
 346         | tDEFAULTVALUE '(' aSTRING ')'         { $$ = make_attrp(ATTR_DEFAULTVALUE_STRING, $3); }
 347         | tDLLNAME '(' aSTRING ')'              { $$ = make_attrp(ATTR_DLLNAME, $3); }
 348         | tDUAL                                 { $$ = make_attr(ATTR_DUAL); }
 349         | tENDPOINT '(' aSTRING ')'             { $$ = make_attrp(ATTR_ENDPOINT, $3); }
 350         | tENTRY '(' aSTRING ')'                { $$ = make_attrp(ATTR_ENTRY_STRING, $3); }
 351         | tENTRY '(' expr_const ')'             { $$ = make_attrp(ATTR_ENTRY_ORDINAL, $3); }
 352         | tEXPLICITHANDLE                       { $$ = make_attr(ATTR_EXPLICIT_HANDLE); }
 353         | tHANDLE                               { $$ = make_attr(ATTR_HANDLE); }
 354         | tHELPCONTEXT '(' expr_const ')'       { $$ = make_attrp(ATTR_HELPCONTEXT, $3); }
 355         | tHELPFILE '(' aSTRING ')'             { $$ = make_attrp(ATTR_HELPFILE, $3); }
 356         | tHELPSTRING '(' aSTRING ')'           { $$ = make_attrp(ATTR_HELPSTRING, $3); }
 357         | tHELPSTRINGCONTEXT '(' expr_const ')' { $$ = make_attrp(ATTR_HELPSTRINGCONTEXT, $3); }
 358         | tHELPSTRINGDLL '(' aSTRING ')'        { $$ = make_attrp(ATTR_HELPSTRINGDLL, $3); }
 359         | tHIDDEN                               { $$ = make_attr(ATTR_HIDDEN); }
 360         | tID '(' expr_const ')'                { $$ = make_attrp(ATTR_ID, $3); }
 361         | tIDEMPOTENT                           { $$ = make_attr(ATTR_IDEMPOTENT); }
 362         | tIIDIS '(' ident ')'                  { $$ = make_attrp(ATTR_IIDIS, $3); }
 363         | tIMPLICITHANDLE '(' tHANDLET aIDENTIFIER ')'  { $$ = make_attrp(ATTR_IMPLICIT_HANDLE, $4); }
 364         | tIN                                   { $$ = make_attr(ATTR_IN); }
 365         | tINPUTSYNC                            { $$ = make_attr(ATTR_INPUTSYNC); }
 366         | tLENGTHIS '(' m_exprs ')'             { $$ = make_attrp(ATTR_LENGTHIS, $3); }
 367         | tLOCAL                                { $$ = make_attr(ATTR_LOCAL); }
 368         | tNONCREATABLE                         { $$ = make_attr(ATTR_NONCREATABLE); }
 369         | tOBJECT                               { $$ = make_attr(ATTR_OBJECT); }
 370         | tODL                                  { $$ = make_attr(ATTR_ODL); }
 371         | tOLEAUTOMATION                        { $$ = make_attr(ATTR_OLEAUTOMATION); }
 372         | tOPTIONAL                             { $$ = make_attr(ATTR_OPTIONAL); }
 373         | tOUT                                  { $$ = make_attr(ATTR_OUT); }
 374         | tPOINTERDEFAULT '(' pointer_type ')'  { $$ = make_attrv(ATTR_POINTERDEFAULT, $3); }
 375         | tPROPGET                              { $$ = make_attr(ATTR_PROPGET); }
 376         | tPROPPUT                              { $$ = make_attr(ATTR_PROPPUT); }
 377         | tPROPPUTREF                           { $$ = make_attr(ATTR_PROPPUTREF); }
 378         | tPUBLIC                               { $$ = make_attr(ATTR_PUBLIC); }
 379         | tREADONLY                             { $$ = make_attr(ATTR_READONLY); }
 380         | tRESTRICTED                           { $$ = make_attr(ATTR_RESTRICTED); }
 381         | tRETVAL                               { $$ = make_attr(ATTR_RETVAL); }
 382         | tSIZEIS '(' m_exprs ')'               { $$ = make_attrp(ATTR_SIZEIS, $3); }
 383         | tSOURCE                               { $$ = make_attr(ATTR_SOURCE); }
 384         | tSTRING                               { $$ = make_attr(ATTR_STRING); }
 385         | tSWITCHIS '(' expr ')'                { $$ = make_attrp(ATTR_SWITCHIS, $3); }
 386         | tSWITCHTYPE '(' type ')'              { $$ = make_attrp(ATTR_SWITCHTYPE, type_ref($3)); }
 387         | tTRANSMITAS '(' type ')'              { $$ = make_attrp(ATTR_TRANSMITAS, type_ref($3)); }
 388         | tUUID '(' aUUID ')'                   { $$ = make_attrp(ATTR_UUID, $3); }
 389         | tV1ENUM                               { $$ = make_attr(ATTR_V1ENUM); }
 390         | tVARARG                               { $$ = make_attr(ATTR_VARARG); }
 391         | tVERSION '(' version ')'              { $$ = make_attrv(ATTR_VERSION, $3); }
 392         | tWIREMARSHAL '(' type ')'             { $$ = make_attrp(ATTR_WIREMARSHAL, type_ref($3)); }
 393         | pointer_type                          { $$ = make_attrv(ATTR_POINTERTYPE, $1); }
 394         ;
 395
 396 callconv:
 397         | tSTDCALL
 398         ;
 399
 400 cases:                                          { $$ = NULL; }
 401         | cases case                            { if ($2) { LINK($2, $1); $$ = $2; }
 402                                                   else { $$ = $1; }
 403                                                 }
 404         ;
 405
 406 case:     tCASE expr ':' field                  { attr_t *a = make_attrp(ATTR_CASE, $2);
 407                                                   $$ = $4; if (!$$) $$ = make_var(NULL);
 408                                                   LINK(a, $$->attrs); $$->attrs = a;
 409                                                 }
 410         | tDEFAULT ':' field                    { attr_t *a = make_attr(ATTR_DEFAULT);
 411                                                   $$ = $3; if (!$$) $$ = make_var(NULL);
 412                                                   LINK(a, $$->attrs); $$->attrs = a;
 413                                                 }
 414         ;
 415
 416 constdef: tCONST type ident '=' expr_const      { $$ = reg_const($3);
 417                                                   set_type($$, $2, NULL);
 418                                                   $$->eval = $5;
 419                                                   $$->lval = $5->cval;
 420                                                 }
 421         ;
 422
 423 enums:                                          { $$ = NULL; }
 424         | enum_list ','                         { $$ = $1; }
 425         | enum_list
 426         ;
 427
 428 enum_list: enum
 429         | enum_list ',' enum                    { LINK($3, $1); $$ = $3;
 430                                                   if ($1 && !$3->eval)
 431                                                     $3->lval = $1->lval + 1;
 432                                                 }
 433         ;
 434
 435 enum:     ident '=' expr_const                  { $$ = reg_const($1);
 436                                                   $$->eval = $3;
 437                                                   $$->lval = $3->cval;
 438                                                   $$->type = make_type(RPC_FC_LONG, &std_int);
 439                                                 }
 440         | ident                                 { $$ = reg_const($1);
 441                                                   $$->lval = 0; /* default for first enum entry */
 442                                                   $$->type = make_type(RPC_FC_LONG, &std_int);
 443                                                 }
 444         ;
 445
 446 enumdef: tENUM t_ident '{' enums '}'            { $$ = get_typev(RPC_FC_ENUM16, $2, tsENUM);
 447                                                   $$->fields = $4;
 448                                                   $$->defined = TRUE;
 449                                                   if(in_typelib)
 450                                                       add_enum($$);
 451                                                 }
 452         ;
 453
 454 m_exprs:  m_expr
 455         | m_exprs ',' m_expr                    { LINK($3, $1); $$ = $3; }
 456         ;
 457
 458 /*
 459 exprs:                                          { $$ = make_expr(EXPR_VOID); }
 460         | expr_list
 461         ;
 462
 463 expr_list: expr
 464         | expr_list ',' expr                    { LINK($3, $1); $$ = $3; }
 465         ;
 466 */
 467
 468 m_expr:                                         { $$ = make_expr(EXPR_VOID); }
 469         | expr
 470         ;
 471
 472 expr:     aNUM                                  { $$ = make_exprl(EXPR_NUM, $1); }
 473         | aHEXNUM                               { $$ = make_exprl(EXPR_HEXNUM, $1); }
 474         | aIDENTIFIER                           { $$ = make_exprs(EXPR_IDENTIFIER, $1); }
 475         | expr '?' expr ':' expr %prec COND     { $$ = make_expr3(EXPR_COND, $1, $3, $5); }
 476         | expr '|' expr                         { $$ = make_expr2(EXPR_OR , $1, $3); }
 477         | expr '&' expr                         { $$ = make_expr2(EXPR_AND, $1, $3); }
 478         | expr '+' expr                         { $$ = make_expr2(EXPR_ADD, $1, $3); }
 479         | expr '-' expr                         { $$ = make_expr2(EXPR_SUB, $1, $3); }
 480         | expr '*' expr                         { $$ = make_expr2(EXPR_MUL, $1, $3); }
 481         | expr '/' expr                         { $$ = make_expr2(EXPR_DIV, $1, $3); }
 482         | expr SHL expr                         { $$ = make_expr2(EXPR_SHL, $1, $3); }
 483         | expr SHR expr                         { $$ = make_expr2(EXPR_SHR, $1, $3); }
 484         | '~' expr                              { $$ = make_expr1(EXPR_NOT, $2); }
 485         | '-' expr %prec NEG                    { $$ = make_expr1(EXPR_NEG, $2); }
 486         | '*' expr %prec PPTR                   { $$ = make_expr1(EXPR_PPTR, $2); }
 487         | '(' type ')' expr %prec CAST          { $$ = make_exprt(EXPR_CAST, $2, $4); }
 488         | tSIZEOF '(' type ')'                  { $$ = make_exprt(EXPR_SIZEOF, $3, NULL); }
 489         | '(' expr ')'                          { $$ = $2; }
 490         ;
 491
 492 expr_list_const: expr_const
 493         | expr_list_const ',' expr_const        { LINK($3, $1); $$ = $3; }
 494         ;
 495
 496 expr_const: expr                                { $$ = $1;
 497                                                   if (!$$->is_const)
 498                                                       yyerror("expression is not constant\n");
 499                                                 }
 500         ;
 501
 502 externdef: tEXTERN tCONST type ident            { $$ = $4;
 503                                                   set_type($$, $3, NULL);
 504                                                 }
 505         ;
 506
 507 fields:                                         { $$ = NULL; }
 508         | fields field                          { if ($2) { LINK($2, $1); $$ = $2; }
 509                                                   else { $$ = $1; }
 510                                                 }
 511         ;
 512
 513 field:    s_field ';'                           { $$ = $1; }
 514         | m_attributes uniondef ';'             { $$ = make_var(NULL); $$->type = $2; $$->attrs = $1; }
 515         | attributes ';'                        { $$ = make_var(NULL); $$->attrs = $1; }
 516         | ';'                                   { $$ = NULL; }
 517         ;
 518
 519 s_field:  m_attributes type pident array        { $$ = $3; set_type($$, $2, $4); $$->attrs = $1; }
 520         ;
 521
 522 funcdef:
 523           m_attributes type callconv pident
 524           '(' m_args ')'                        { set_type($4, $2, NULL);
 525                                                   $4->attrs = $1;
 526                                                   $$ = make_func($4, $6);
 527                                                   if (is_attr($4->attrs, ATTR_IN)) {
 528                                                     yyerror("Inapplicable attribute");
 529                                                   }
 530                                                 }
 531         ;
 532
 533 m_ident:                                        { $$ = NULL; }
 534         | ident
 535         ;
 536
 537 t_ident:                                        { $$ = NULL; }
 538         | aIDENTIFIER                           { $$ = make_var($1); }
 539         | aKNOWNTYPE                            { $$ = make_var($1); }
 540         ;
 541
 542 ident:    aIDENTIFIER                           { $$ = make_var($1); }
 543 /* some "reserved words" used in attributes are also used as field names in some MS IDL files */
 544         | aKNOWNTYPE                            { $$ = make_var($<str>1); }
 545         | tID                                   { $$ = make_var($<str>1); }
 546         | tRETVAL                               { $$ = make_var($<str>1); }
 547         | tVERSION                              { $$ = make_var($<str>1); }
 548         ;
 549
 550 base_type: tBYTE                                { $$ = make_type(RPC_FC_BYTE, NULL); }
 551         | tWCHAR                                { $$ = make_type(RPC_FC_WCHAR, NULL); }
 552         | int_std
 553         | tSIGNED int_std                       { $$ = $2; $$->sign = 1; }
 554         | tUNSIGNED int_std                     { $$ = $2; $$->sign = -1;
 555                                                   switch ($$->type) {
 556                                                   case RPC_FC_CHAR:  $$->type = RPC_FC_BYTE; $$->sign = 0; break;
 557                                                   case RPC_FC_SMALL: $$->type = RPC_FC_USMALL; break;
 558                                                   case RPC_FC_SHORT: $$->type = RPC_FC_USHORT; break;
 559                                                   case RPC_FC_LONG:  $$->type = RPC_FC_ULONG;  break;
 560                                                   case RPC_FC_HYPER:
 561                                                     if (!$$->ref) { $$->ref = &std_uhyper; $$->sign = 0; }
 562                                                     break;
 563                                                   default: break;
 564                                                   }
 565                                                 }
 566         | tUNSIGNED                             { $$ = make_type(RPC_FC_ULONG, &std_int); $$->sign = -1; }
 567         | tFLOAT                                { $$ = make_type(RPC_FC_FLOAT, NULL); }
 568         | tDOUBLE                               { $$ = make_type(RPC_FC_DOUBLE, NULL); }
 569         | tBOOLEAN                              { $$ = make_type(RPC_FC_BYTE, &std_bool); /* ? */ }
 570         | tERRORSTATUST                         { $$ = make_type(RPC_FC_ERROR_STATUS_T, NULL); }
 571         | tHANDLET                              { $$ = make_type(RPC_FC_BIND_PRIMITIVE, NULL); /* ? */ }
 572         ;
 573
 574 m_int:
 575         | tINT
 576         ;
 577
 578 int_std:  tINT                                  { $$ = make_type(RPC_FC_LONG, &std_int); } /* win32 only */
 579         | tSHORT m_int                          { $$ = make_type(RPC_FC_SHORT, NULL); }
 580         | tLONG m_int                           { $$ = make_type(RPC_FC_LONG, NULL); }
 581         | tHYPER m_int                          { $$ = make_type(RPC_FC_HYPER, NULL); }
 582         | tINT64                                { $$ = make_type(RPC_FC_HYPER, &std_int64); }
 583         | tCHAR                                 { $$ = make_type(RPC_FC_CHAR, NULL); }
 584         ;
 585
 586 coclass:  tCOCLASS aIDENTIFIER                  { $$ = make_class($2); }
 587         | tCOCLASS aKNOWNTYPE                   { $$ = make_class($2); }
 588         ;
 589
 590 coclasshdr: attributes coclass                  { $$ = $2;
 591                                                   $$->attrs = $1;
 592                                                   if (!parse_only && do_header) write_coclass($$);
 593                                                 }
 594         ;
 595
 596 coclassdef: coclasshdr '{' coclass_ints '}'     { $$ = $1;
 597                                                   $$->ifaces = $3;
 598                                                 }
 599         ;
 600
 601 coclass_ints:                                   { $$ = NULL; }
 602         | coclass_ints coclass_int              { LINK($2, $1); $$ = $2; }
 603         ;
 604
 605 coclass_int:
 606           m_attributes interfacedec             { $$ = make_ifref($2); $$->attrs = $1; }
 607         ;
 608
 609 dispinterface: tDISPINTERFACE aIDENTIFIER       { $$ = get_type(0, $2, 0); }
 610         |      tDISPINTERFACE aKNOWNTYPE        { $$ = get_type(0, $2, 0); }
 611         ;
 612
 613 dispinterfacehdr: attributes dispinterface      { $$ = $2;
 614                                                   if ($$->defined) yyerror("multiple definition error\n");
 615                                                   $$->attrs = $1;
 616                                                   $$->attrs = make_attr(ATTR_DISPINTERFACE);
 617                                                   LINK($$->attrs, $1);
 618                                                   $$->ref = find_type("IDispatch", 0);
 619                                                   if (!$$->ref) yyerror("IDispatch is undefined\n");
 620                                                   $$->defined = TRUE;
 621                                                   if (!parse_only && do_header) write_forward($$);
 622                                                 }
 623         ;
 624
 625 dispint_props: tPROPERTIES ':'                  { $$ = NULL; }
 626         | dispint_props s_field ';'             { LINK($2, $1); $$ = $2; }
 627         ;
 628
 629 dispint_meths: tMETHODS ':'                     { $$ = NULL; }
 630         | dispint_meths funcdef ';'             { LINK($2, $1); $$ = $2; }
 631         ;
 632
 633 dispinterfacedef: dispinterfacehdr '{'
 634           dispint_props
 635           dispint_meths
 636           '}'                                   { $$ = $1;
 637                                                   $$->fields = $3;
 638                                                   $$->funcs = $4;
 639                                                   if (!parse_only && do_header) write_dispinterface($$);
 640                                                 }
 641 /* FIXME: not sure how to handle this yet
 642         | dispinterfacehdr '{' interface '}'    { $$ = $1;
 643                                                   if (!parse_only && do_header) write_interface($$);
 644                                                 }
 645 */
 646         ;
 647
 648 inherit:                                        { $$ = NULL; }
 649         | ':' aKNOWNTYPE                        { $$ = find_type2($2, 0); }
 650         ;
 651
 652 interface: tINTERFACE aIDENTIFIER               { $$ = get_type(RPC_FC_IP, $2, 0); }
 653         |  tINTERFACE aKNOWNTYPE                { $$ = get_type(RPC_FC_IP, $2, 0); }
 654         ;
 655
 656 interfacehdr: attributes interface              { $$ = $2;
 657                                                   if ($$->defined) yyerror("multiple definition error\n");
 658                                                   $$->attrs = $1;
 659                                                   $$->defined = TRUE;
 660                                                   if (!parse_only && do_header) write_forward($$);
 661                                                 }
 662         ;
 663
 664 interfacedef: interfacehdr inherit
 665           '{' int_statements '}'                { $$ = $1;
 666                                                   $$->ref = $2;
 667                                                   $$->funcs = $4;
 668                                                   if (!parse_only && do_header) write_interface($$);
 669                                                 }
 670 /* MIDL is able to import the definition of a base class from inside the
 671  * definition of a derived class, I'll try to support it with this rule */
 672         | interfacehdr ':' aIDENTIFIER
 673           '{' import int_statements '}'         { $$ = $1;
 674                                                   $$->ref = find_type2($3, 0);
 675                                                   if (!$$->ref) yyerror("base class %s not found in import\n", $3);
 676                                                   $$->funcs = $6;
 677                                                   if (!parse_only && do_header) write_interface($$);
 678                                                 }
 679         | dispinterfacedef                      { $$ = $1; }
 680         ;
 681
 682 interfacedec:
 683           interface ';'                         { $$ = $1; if (!parse_only && do_header) write_forward($$); }
 684         | dispinterface ';'                     { $$ = $1; if (!parse_only && do_header) write_forward($$); }
 685         ;
 686
 687 module:   tMODULE aIDENTIFIER                   { $$ = make_type(0, NULL); $$->name = $2; }
 688         | tMODULE aKNOWNTYPE                    { $$ = make_type(0, NULL); $$->name = $2; }
 689         ;
 690
 691 modulehdr: attributes module                    { $$ = $2;
 692                                                   $$->attrs = $1;
 693                                                 }
 694         ;
 695
 696 moduledef: modulehdr '{' int_statements '}'     { $$ = $1;
 697                                                   $$->funcs = $3;
 698                                                   /* FIXME: if (!parse_only && do_header) write_module($$); */
 699                                                 }
 700         ;
 701
 702 p_ident:  '*' pident %prec PPTR                 { $$ = $2; $$->ptr_level++; }
 703         | tCONST p_ident                        { $$ = $2; /* FIXME */ }
 704         ;
 705
 706 pident:   ident
 707         | p_ident
 708         | '(' pident ')'                        { $$ = $2; }
 709         ;
 710
 711 pident_list:
 712           pident
 713         | pident_list ',' pident                { LINK($3, $1); $$ = $3; }
 714         ;
 715
 716 pointer_type:
 717           tREF                                  { $$ = RPC_FC_RP; }
 718         | tUNIQUE                               { $$ = RPC_FC_UP; }
 719         ;
 720
 721 structdef: tSTRUCT t_ident '{' fields '}'       { $$ = get_typev(RPC_FC_STRUCT, $2, tsSTRUCT);
 722                                                   /* overwrite RPC_FC_STRUCT with a more exact type */
 723                                                   $$->type = get_struct_type( $4 );
 724                                                   $$->fields = $4;
 725                                                   $$->defined = TRUE;
 726                                                   if(in_typelib)
 727                                                       add_struct($$);
 728                                                 }
 729         ;
 730
 731 type:     tVOID                                 { $$ = make_tref(NULL, make_type(0, NULL)); }
 732         | aKNOWNTYPE                            { $$ = make_tref($1, find_type($1, 0)); }
 733         | base_type                             { $$ = make_tref(NULL, $1); }
 734         | tCONST type                           { $$ = uniq_tref($2); $$->ref->is_const = TRUE; }
 735         | enumdef                               { $$ = make_tref(NULL, $1); }
 736         | tENUM aIDENTIFIER                     { $$ = make_tref(NULL, find_type2($2, tsENUM)); }
 737         | structdef                             { $$ = make_tref(NULL, $1); }
 738         | tSTRUCT aIDENTIFIER                   { $$ = make_tref(NULL, get_type(RPC_FC_STRUCT, $2, tsSTRUCT)); }
 739         | uniondef                              { $$ = make_tref(NULL, $1); }
 740         | tUNION aIDENTIFIER                    { $$ = make_tref(NULL, find_type2($2, tsUNION)); }
 741         ;
 742
 743 typedef: tTYPEDEF m_attributes type pident_list { typeref_t *tref = uniq_tref($3);
 744                                                   $4->tname = tref->name;
 745                                                   tref->name = NULL;
 746                                                   $$ = type_ref(tref);
 747                                                   $$->attrs = $2;
 748                                                   if (!parse_only && do_header) write_typedef($$, $4);
 749                                                   if (in_typelib && $$->attrs)
 750                                                       add_typedef($$, $4);
 751                                                   reg_types($$, $4, 0);
 752                                                 }
 753         ;
 754
 755 uniondef: tUNION t_ident '{' fields '}'         { $$ = get_typev(RPC_FC_NON_ENCAPSULATED_UNION, $2, tsUNION);
 756                                                   $$->fields = $4;
 757                                                   $$->defined = TRUE;
 758                                                 }
 759         | tUNION t_ident
 760           tSWITCH '(' s_field ')'
 761           m_ident '{' cases '}'                 { var_t *u = $7;
 762                                                   $$ = get_typev(RPC_FC_ENCAPSULATED_UNION, $2, tsUNION);
 763                                                   if (!u) u = make_var("tagged_union");
 764                                                   u->type = make_type(RPC_FC_NON_ENCAPSULATED_UNION, NULL);
 765                                                   u->type->fields = $9;
 766                                                   u->type->defined = TRUE;
 767                                                   LINK(u, $5); $$->fields = u;
 768                                                   $$->defined = TRUE;
 769                                                 }
 770         ;
 771
 772 version:
 773           aNUM                                  { $$ = MAKELONG($1, 0); }
 774         | aNUM '.' aNUM                         { $$ = MAKELONG($1, $3); }
 775         ;
 776
 777 %%
 778
 779 static attr_t *make_attr(enum attr_type type)
 780 {
 781   attr_t *a = xmalloc(sizeof(attr_t));
 782   a->type = type;
 783   a->u.ival = 0;
 784   INIT_LINK(a);
 785   return a;
 786 }
 787
 788 static attr_t *make_attrv(enum attr_type type, unsigned long val)
 789 {
 790   attr_t *a = xmalloc(sizeof(attr_t));
 791   a->type = type;
 792   a->u.ival = val;
 793   INIT_LINK(a);
 794   return a;
 795 }
 796
 797 static attr_t *make_attrp(enum attr_type type, void *val)
 798 {
 799   attr_t *a = xmalloc(sizeof(attr_t));
 800   a->type = type;
 801   a->u.pval = val;
 802   INIT_LINK(a);
 803   return a;
 804 }
 805
 806 static expr_t *make_expr(enum expr_type type)
 807 {
 808   expr_t *e = xmalloc(sizeof(expr_t));
 809   e->type = type;
 810   e->ref = NULL;
 811   e->u.lval = 0;
 812   e->is_const = FALSE;
 813   INIT_LINK(e);
 814   return e;
 815 }
 816
 817 static expr_t *make_exprl(enum expr_type type, long val)
 818 {
 819   expr_t *e = xmalloc(sizeof(expr_t));
 820   e->type = type;
 821   e->ref = NULL;
 822   e->u.lval = val;
 823   e->is_const = FALSE;
 824   INIT_LINK(e);
 825   /* check for numeric constant */
 826   if (type == EXPR_NUM || type == EXPR_HEXNUM) {
 827     e->is_const = TRUE;
 828     e->cval = val;
 829   }
 830   return e;
 831 }
 832
 833 static expr_t *make_exprs(enum expr_type type, char *val)
 834 {
 835   expr_t *e;
 836   e = xmalloc(sizeof(expr_t));
 837   e->type = type;
 838   e->ref = NULL;
 839   e->u.sval = val;
 840   e->is_const = FALSE;
 841   INIT_LINK(e);
 842   /* check for predefined constants */
 843   if (type == EXPR_IDENTIFIER) {
 844     var_t *c = find_const(val, 0);
 845     if (c) {
 846       e->u.sval = c->name;
 847       free(val);
 848       e->is_const = TRUE;
 849       e->cval = c->lval;
 850     }
 851   }
 852   return e;
 853 }
 854
 855 static expr_t *make_exprt(enum expr_type type, typeref_t *tref, expr_t *expr)
 856 {
 857   expr_t *e;
 858   e = xmalloc(sizeof(expr_t));
 859   e->type = type;
 860   e->ref = expr;
 861   e->u.tref = tref;
 862   e->is_const = FALSE;
 863   INIT_LINK(e);
 864   /* check for cast of constant expression */
 865   if (type == EXPR_CAST && expr->is_const) {
 866     e->is_const = TRUE;
 867     e->cval = expr->cval;
 868   }
 869   return e;
 870 }
 871
 872 static expr_t *make_expr1(enum expr_type type, expr_t *expr)
 873 {
 874   expr_t *e;
 875   e = xmalloc(sizeof(expr_t));
 876   e->type = type;
 877   e->ref = expr;
 878   e->u.lval = 0;
 879   e->is_const = FALSE;
 880   INIT_LINK(e);
 881   /* check for compile-time optimization */
 882   if (expr->is_const) {
 883     e->is_const = TRUE;
 884     switch (type) {
 885     case EXPR_NEG:
 886       e->cval = -expr->cval;
 887       break;
 888     case EXPR_NOT:
 889       e->cval = ~expr->cval;
 890       break;
 891     default:
 892       e->is_const = FALSE;
 893       break;
 894     }
 895   }
 896   return e;
 897 }
 898
 899 static expr_t *make_expr2(enum expr_type type, expr_t *expr1, expr_t *expr2)
 900 {
 901   expr_t *e;
 902   e = xmalloc(sizeof(expr_t));
 903   e->type = type;
 904   e->ref = expr1;
 905   e->u.ext = expr2;
 906   e->is_const = FALSE;
 907   INIT_LINK(e);
 908   /* check for compile-time optimization */
 909   if (expr1->is_const && expr2->is_const) {
 910     e->is_const = TRUE;
 911     switch (type) {
 912     case EXPR_ADD:
 913       e->cval = expr1->cval + expr2->cval;
 914       break;
 915     case EXPR_SUB:
 916       e->cval = expr1->cval - expr2->cval;
 917       break;
 918     case EXPR_MUL:
 919       e->cval = expr1->cval * expr2->cval;
 920       break;
 921     case EXPR_DIV:
 922       e->cval = expr1->cval / expr2->cval;
 923       break;
 924     case EXPR_OR:
 925       e->cval = expr1->cval | expr2->cval;
 926       break;
 927     case EXPR_AND:
 928       e->cval = expr1->cval & expr2->cval;
 929       break;
 930     case EXPR_SHL:
 931       e->cval = expr1->cval << expr2->cval;
 932       break;
 933     case EXPR_SHR:
 934       e->cval = expr1->cval >> expr2->cval;
 935       break;
 936     default:
 937       e->is_const = FALSE;
 938       break;
 939     }
 940   }
 941   return e;
 942 }
 943
 944 static expr_t *make_expr3(enum expr_type type, expr_t *expr1, expr_t *expr2, expr_t *expr3)
 945 {
 946   expr_t *e;
 947   e = xmalloc(sizeof(expr_t));
 948   e->type = type;
 949   e->ref = expr1;
 950   e->u.ext = expr2;
 951   e->ext2 = expr3;
 952   e->is_const = FALSE;
 953   INIT_LINK(e);
 954   /* check for compile-time optimization */
 955   if (expr1->is_const && expr2->is_const && expr3->is_const) {
 956     e->is_const = TRUE;
 957     switch (type) {
 958     case EXPR_COND:
 959       e->cval = expr1->cval ? expr2->cval : expr3->cval;
 960       break;
 961     default:
 962       e->is_const = FALSE;
 963       break;
 964     }
 965   }
 966   return e;
 967 }
 968
 969 static type_t *make_type(unsigned char type, type_t *ref)
 970 {
 971   type_t *t = xmalloc(sizeof(type_t));
 972   t->name = NULL;
 973   t->type = type;
 974   t->ref = ref;
 975   t->rname = NULL;
 976   t->attrs = NULL;
 977   t->funcs = NULL;
 978   t->fields = NULL;
 979   t->ignore = parse_only;
 980   t->is_const = FALSE;
 981   t->sign = 0;
 982   t->defined = FALSE;
 983   t->written = FALSE;
 984   t->typelib_idx = -1;
 985   INIT_LINK(t);
 986   return t;
 987 }
 988
 989 static typeref_t *make_tref(char *name, type_t *ref)
 990 {
 991   typeref_t *t = xmalloc(sizeof(typeref_t));
 992   t->name = name;
 993   t->ref = ref;
 994   t->uniq = ref ? 0 : 1;
 995   return t;
 996 }
 997
 998 static typeref_t *uniq_tref(typeref_t *ref)
 999 {
1000   typeref_t *t = ref;
1001   type_t *tp;
1002   if (t->uniq) return t;
1003   tp = make_type(0, t->ref);
1004   tp->name = t->name;
1005   t->name = NULL;
1006   t->ref = tp;
1007   t->uniq = 1;
1008   return t;
1009 }
1010
1011 static type_t *type_ref(typeref_t *ref)
1012 {
1013   type_t *t = ref->ref;
1014   if (ref->name) free(ref->name);
1015   free(ref);
1016   return t;
1017 }
1018
1019 static void set_type(var_t *v, typeref_t *ref, expr_t *arr)
1020 {
1021   v->type = ref->ref;
1022   v->tname = ref->name;
1023   ref->name = NULL;
1024   free(ref);
1025   v->array = arr;
1026 }
1027
1028 static ifref_t *make_ifref(type_t *iface)
1029 {
1030   ifref_t *l = xmalloc(sizeof(ifref_t));
1031   l->iface = iface;
1032   l->attrs = NULL;
1033   INIT_LINK(l);
1034   return l;
1035 }
1036
1037 static var_t *make_var(char *name)
1038 {
1039   var_t *v = xmalloc(sizeof(var_t));
1040   v->name = name;
1041   v->ptr_level = 0;
1042   v->type = NULL;
1043   v->tname = NULL;
1044   v->attrs = NULL;
1045   v->array = NULL;
1046   v->eval = NULL;
1047   v->lval = 0;
1048   INIT_LINK(v);
1049   return v;
1050 }
1051
1052 static func_t *make_func(var_t *def, var_t *args)
1053 {
1054   func_t *f = xmalloc(sizeof(func_t));
1055   f->def = def;
1056   f->args = args;
1057   f->ignore = parse_only;
1058   f->idx = -1;
1059   INIT_LINK(f);
1060   return f;
1061 }
1062
1063 static class_t *make_class(char *name)
1064 {
1065   class_t *c = xmalloc(sizeof(class_t));
1066   c->name = name;
1067   c->attrs = NULL;
1068   c->ifaces = NULL;
1069   INIT_LINK(c);
1070   return c;
1071 }
1072
1073 #define HASHMAX 64
1074
1075 static int hash_ident(const char *name)
1076 {
1077   const char *p = name;
1078   int sum = 0;
1079   /* a simple sum hash is probably good enough */
1080   while (*p) {
1081     sum += *p;
1082     p++;
1083   }
1084   return sum & (HASHMAX-1);
1085 }
1086
1087 /***** type repository *****/
1088
1089 struct rtype {
1090   char *name;
1091   type_t *type;
1092   int t;
1093   struct rtype *next;
1094 };
1095
1096 struct rtype *type_hash[HASHMAX];
1097
1098 static type_t *reg_type(type_t *type, char *name, int t)
1099 {
1100   struct rtype *nt;
1101   int hash;
1102   if (!name) {
1103     yyerror("registering named type without name\n");
1104     return type;
1105   }
1106   hash = hash_ident(name);
1107   nt = xmalloc(sizeof(struct rtype));
1108   nt->name = name;
1109   nt->type = type;
1110   nt->t = t;
1111   nt->next = type_hash[hash];
1112   type_hash[hash] = nt;
1113   return type;
1114 }
1115
1116 /* determine pointer type from attrs */
1117 static unsigned char get_pointer_type( type_t *type )
1118 {
1119   int t;
1120   if (is_attr( type->attrs, ATTR_STRING ))
1121   {
1122     type_t *t = type;
1123     while( t->type == 0 && t->ref )
1124       t = t->ref;
1125     switch( t->type )
1126     {
1127     case RPC_FC_CHAR:
1128       return RPC_FC_C_CSTRING;
1129     case RPC_FC_WCHAR:
1130       return RPC_FC_C_WSTRING;
1131     }
1132   }
1133   t = get_attrv( type->attrs, ATTR_POINTERTYPE );
1134   if (t) return t;
1135   return RPC_FC_FP;
1136 }
1137
1138 static type_t *reg_types(type_t *type, var_t *names, int t)
1139 {
1140   type_t *ptr = type;
1141   int ptrc = 0;
1142
1143   while (names) {
1144     var_t *next = NEXT_LINK(names);
1145     if (names->name) {
1146       type_t *cur = ptr;
1147       int cptr = names->ptr_level;
1148       if (cptr > ptrc) {
1149         while (cptr > ptrc) {
1150           int t = get_pointer_type( cur );
1151           cur = ptr = make_type(t, cur);
1152           ptrc++;
1153         }
1154       } else {
1155         while (cptr < ptrc) {
1156           cur = cur->ref;
1157           cptr++;
1158         }
1159       }
1160       reg_type(cur, names->name, t);
1161     }
1162     free(names);
1163     names = next;
1164   }
1165   return type;
1166 }
1167
1168 static type_t *find_type(char *name, int t)
1169 {
1170   struct rtype *cur = type_hash[hash_ident(name)];
1171   while (cur && (cur->t != t || strcmp(cur->name, name)))
1172     cur = cur->next;
1173   if (!cur) {
1174     yyerror("type %s not found\n", name);
1175     return NULL;
1176   }
1177   return cur->type;
1178 }
1179
1180 static type_t *find_type2(char *name, int t)
1181 {
1182   type_t *tp = find_type(name, t);
1183   free(name);
1184   return tp;
1185 }
1186
1187 int is_type(const char *name)
1188 {
1189   struct rtype *cur = type_hash[hash_ident(name)];
1190   while (cur && (cur->t || strcmp(cur->name, name)))
1191     cur = cur->next;
1192   if (cur) return TRUE;
1193   return FALSE;
1194 }
1195
1196 static type_t *get_type(unsigned char type, char *name, int t)
1197 {
1198   struct rtype *cur = NULL;
1199   type_t *tp;
1200   if (name) {
1201     cur = type_hash[hash_ident(name)];
1202     while (cur && (cur->t != t || strcmp(cur->name, name)))
1203       cur = cur->next;
1204   }
1205   if (cur) {
1206     free(name);
1207     return cur->type;
1208   }
1209   tp = make_type(type, NULL);
1210   tp->name = name;
1211   if (!name) return tp;
1212   return reg_type(tp, name, t);
1213 }
1214
1215 static type_t *get_typev(unsigned char type, var_t *name, int t)
1216 {
1217   char *sname = NULL;
1218   if (name) {
1219     sname = name->name;
1220     free(name);
1221   }
1222   return get_type(type, sname, t);
1223 }
1224
1225 static int get_struct_type(var_t *field)
1226 {
1227   int has_pointer = 0;
1228   int has_conformant_array = 0;
1229   int has_conformant_string = 0;
1230
1231   while (field)
1232   {
1233     type_t *t = field->type;
1234
1235     /* get the base type */
1236     while( (t->type == 0) && t->ref )
1237       t = t->ref;
1238
1239     switch (t->type)
1240     {
1241     /*
1242      * RPC_FC_BYTE, RPC_FC_STRUCT, etc
1243      *  Simple types don't effect the type of struct.
1244      *  A struct containing a simple struct is still a simple struct.
1245      *  So long as we can block copy the data, we return RPC_FC_STRUCT.
1246      */
1247     case 0: /* void pointer */
1248     case RPC_FC_BYTE:
1249     case RPC_FC_CHAR:
1250     case RPC_FC_SMALL:
1251     case RPC_FC_USMALL:
1252     case RPC_FC_WCHAR:
1253     case RPC_FC_SHORT:
1254     case RPC_FC_USHORT:
1255     case RPC_FC_LONG:
1256     case RPC_FC_ULONG:
1257     case RPC_FC_INT3264:
1258     case RPC_FC_UINT3264:
1259     case RPC_FC_HYPER:
1260     case RPC_FC_FLOAT:
1261     case RPC_FC_DOUBLE:
1262     case RPC_FC_STRUCT:
1263     case RPC_FC_ENUM16:
1264     case RPC_FC_ENUM32:
1265       break;
1266
1267     case RPC_FC_UP:
1268     case RPC_FC_FP:
1269       has_pointer = 1;
1270       break;
1271     case RPC_FC_CARRAY:
1272       has_conformant_array = 1;
1273       break;
1274     case RPC_FC_C_CSTRING:
1275     case RPC_FC_C_WSTRING:
1276       has_conformant_string = 1;
1277       break;
1278
1279     /*
1280      * Propagate member attributes
1281      *  a struct should be at least as complex as its member
1282      */
1283     case RPC_FC_CVSTRUCT:
1284       has_conformant_string = 1;
1285       has_pointer = 1;
1286       break;
1287
1288     case RPC_FC_CPSTRUCT:
1289       has_conformant_array = 1;
1290       has_pointer = 1;
1291       break;
1292
1293     case RPC_FC_CSTRUCT:
1294       has_conformant_array = 1;
1295       break;
1296
1297     case RPC_FC_PSTRUCT:
1298       has_pointer = 1;
1299       break;
1300
1301     default:
1302       fprintf(stderr,"Unknown struct member %s with type (0x%02x)\n",
1303               field->name, t->type);
1304       /* fallthru - treat it as complex */
1305
1306     /* as soon as we see one of these these members, it's bogus... */
1307     case RPC_FC_IP:
1308     case RPC_FC_ENCAPSULATED_UNION:
1309     case RPC_FC_NON_ENCAPSULATED_UNION:
1310     case RPC_FC_TRANSMIT_AS:
1311     case RPC_FC_REPRESENT_AS:
1312     case RPC_FC_PAD:
1313     case RPC_FC_EMBEDDED_COMPLEX:
1314     case RPC_FC_BOGUS_STRUCT:
1315       return RPC_FC_BOGUS_STRUCT;
1316     }
1317     field = NEXT_LINK(field);
1318   }
1319
1320   if( has_conformant_string && has_pointer )
1321     return RPC_FC_CVSTRUCT;
1322   if( has_conformant_array && has_pointer )
1323     return RPC_FC_CPSTRUCT;
1324   if( has_conformant_array )
1325     return RPC_FC_CSTRUCT;
1326   if( has_pointer )
1327     return RPC_FC_PSTRUCT;
1328   return RPC_FC_STRUCT;
1329 }
1330
1331 /***** constant repository *****/
1332
1333 struct rconst {
1334   char *name;
1335   var_t *var;
1336   struct rconst *next;
1337 };
1338
1339 struct rconst *const_hash[HASHMAX];
1340
1341 static var_t *reg_const(var_t *var)
1342 {
1343   struct rconst *nc;
1344   int hash;
1345   if (!var->name) {
1346     yyerror("registering constant without name\n");
1347     return var;
1348   }
1349   hash = hash_ident(var->name);
1350   nc = xmalloc(sizeof(struct rconst));
1351   nc->name = var->name;
1352   nc->var = var;
1353   nc->next = const_hash[hash];
1354   const_hash[hash] = nc;
1355   return var;
1356 }
1357
1358 static var_t *find_const(char *name, int f)
1359 {
1360   struct rconst *cur = const_hash[hash_ident(name)];
1361   while (cur && strcmp(cur->name, name))
1362     cur = cur->next;
1363   if (!cur) {
1364     if (f) yyerror("constant %s not found\n", name);
1365     return NULL;
1366   }
1367   return cur->var;
1368 }