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(const 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 tDISPLAYBIND
 137 %token tDISPINTERFACE
 138 %token tDLLNAME tDOUBLE tDUAL
 139 %token tENDPOINT
 140 %token tENTRY tENUM tERRORSTATUST
 141 %token tEXPLICITHANDLE tEXTERN
 142 %token tFLOAT
 143 %token tHANDLE
 144 %token tHANDLET
 145 %token tHELPCONTEXT tHELPFILE
 146 %token tHELPSTRING tHELPSTRINGCONTEXT tHELPSTRINGDLL
 147 %token tHIDDEN
 148 %token tHYPER tID tIDEMPOTENT
 149 %token tIIDIS
 150 %token tIMPLICITHANDLE
 151 %token tIMPORT tIMPORTLIB
 152 %token tIN tINCLUDE tINLINE
 153 %token tINPUTSYNC
 154 %token tINT tINT64
 155 %token tINTERFACE
 156 %token tLENGTHIS tLIBRARY
 157 %token tLOCAL
 158 %token tLONG
 159 %token tMETHODS
 160 %token tMODULE
 161 %token tNONCREATABLE
 162 %token tOBJECT tODL tOLEAUTOMATION
 163 %token tOPTIONAL
 164 %token tOUT
 165 %token tPOINTERDEFAULT
 166 %token tPROPERTIES
 167 %token tPROPGET tPROPPUT tPROPPUTREF
 168 %token tPTR
 169 %token tPUBLIC
 170 %token tRANGE
 171 %token tREADONLY tREF
 172 %token tRESTRICTED
 173 %token tRETVAL
 174 %token tSHORT
 175 %token tSIGNED
 176 %token tSINGLE
 177 %token tSIZEIS tSIZEOF
 178 %token tSMALL
 179 %token tSOURCE
 180 %token tSTDCALL
 181 %token tSTRING tSTRUCT
 182 %token tSWITCH tSWITCHIS tSWITCHTYPE
 183 %token tTRANSMITAS
 184 %token tTYPEDEF
 185 %token tUNION
 186 %token tUNIQUE
 187 %token tUNSIGNED
 188 %token tUUID
 189 %token tV1ENUM
 190 %token tVARARG
 191 %token tVERSION
 192 %token tVOID
 193 %token tWCHAR tWIREMARSHAL
 194
 195 /* used in attr_t */
 196 %token tPOINTERTYPE
 197
 198 %type <attr> m_attributes attributes attrib_list attribute
 199 %type <expr> m_exprs /* exprs expr_list */ m_expr expr expr_list_const expr_const
 200 %type <expr> array array_list
 201 %type <type> inherit interface interfacehdr interfacedef interfacedec
 202 %type <type> dispinterface dispinterfacehdr dispinterfacedef
 203 %type <type> module modulehdr moduledef
 204 %type <type> base_type int_std
 205 %type <type> enumdef structdef typedef uniondef
 206 %type <ifref> gbl_statements coclass_ints coclass_int
 207 %type <tref> type
 208 %type <var> m_args no_args args arg
 209 %type <var> fields field s_field cases case enums enum_list enum constdef externdef
 210 %type <var> m_ident t_ident ident p_ident pident pident_list
 211 %type <var> dispint_props
 212 %type <func> funcdef int_statements
 213 %type <func> dispint_meths
 214 %type <clas> coclass coclasshdr coclassdef
 215 %type <num> pointer_type version
 216 %type <str> libraryhdr
 217
 218 %left ','
 219 %right '?' ':'
 220 %left '|'
 221 %left '&'
 222 %left '-' '+'
 223 %left '*' '/'
 224 %left SHL SHR
 225 %right '~'
 226 %right CAST
 227 %right PPTR
 228 %right NEG
 229
 230 %%
 231
 232 input:   gbl_statements                        { write_proxies($1); write_client($1); write_server($1); }
 233         ;
 234
 235 gbl_statements:                                 { $$ = NULL; }
 236         | gbl_statements interfacedec           { $$ = $1; }
 237         | gbl_statements interfacedef           { $$ = make_ifref($2); LINK($$, $1); }
 238         | gbl_statements coclassdef             { $$ = $1; add_coclass($2); }
 239         | gbl_statements moduledef              { $$ = $1; add_module($2); }
 240         | gbl_statements librarydef             { $$ = $1; }
 241         | gbl_statements statement              { $$ = $1; }
 242         ;
 243
 244 imp_statements:                                 {}
 245         | imp_statements interfacedec           { if (!parse_only) add_interface($2); }
 246         | imp_statements interfacedef           { if (!parse_only) add_interface($2); }
 247         | imp_statements coclassdef             { if (!parse_only) add_coclass($2); }
 248         | imp_statements moduledef              { if (!parse_only) add_module($2); }
 249         | imp_statements statement              {}
 250         ;
 251
 252 int_statements:                                 { $$ = NULL; }
 253         | int_statements funcdef ';'            { $$ = $2; LINK($$, $1); }
 254         | int_statements statement              { $$ = $1; }
 255         ;
 256
 257 statement: ';'                                  {}
 258         | constdef ';'                          { if (!parse_only && do_header) { write_constdef($1); } }
 259         | cppquote                              {}
 260         | enumdef ';'                           { if (!parse_only && do_header) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n\n"); } }
 261         | externdef ';'                         { if (!parse_only && do_header) { write_externdef($1); } }
 262         | import                                {}
 263         | structdef ';'                         { if (!parse_only && do_header) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n\n"); } }
 264         | typedef ';'                           {}
 265         | uniondef ';'                          { if (!parse_only && do_header) { write_type(header, $1, NULL, NULL); fprintf(header, ";\n\n"); } }
 266         ;
 267
 268 cppquote: tCPPQUOTE '(' aSTRING ')'             { if (!parse_only && do_header) fprintf(header, "%s\n", $3); }
 269         ;
 270 import_start: tIMPORT aSTRING ';'               { assert(yychar == YYEMPTY);
 271                                                   if (!do_import($2)) yychar = aEOF; }
 272         ;
 273 import:   import_start imp_statements aEOF      {}
 274         ;
 275
 276 libraryhdr: tLIBRARY aIDENTIFIER                { $$ = $2; }
 277         ;
 278 library_start: attributes libraryhdr '{'        { start_typelib($2, $1);
 279                                                   if (!parse_only && do_header) write_library($2, $1); }
 280         ;
 281 librarydef: library_start imp_statements '}'    { end_typelib(); }
 282         ;
 283
 284 m_args:                                         { $$ = NULL; }
 285         | args
 286         ;
 287
 288 no_args:  tVOID                                 { $$ = NULL; }
 289         ;
 290
 291 args:     arg
 292         | args ',' arg                          { LINK($3, $1); $$ = $3; }
 293         | no_args
 294         ;
 295
 296 /* split into two rules to get bison to resolve a tVOID conflict */
 297 arg:      attributes type pident array          { $$ = $3;
 298                                                   set_type($$, $2, $4);
 299                                                   $$->attrs = $1;
 300                                                 }
 301         | type pident array                     { $$ = $2;
 302                                                   set_type($$, $1, $3);
 303                                                 }
 304         | attributes type pident '(' m_args ')' { $$ = $3;
 305                                                   $$->ptr_level--;
 306                                                   set_type($$, $2, NULL);
 307                                                   $$->attrs = $1;
 308                                                   $$->args = $5;
 309                                                 }
 310         | type pident '(' m_args ')'            { $$ = $2;
 311                                                   $$->ptr_level--;
 312                                                   set_type($$, $1, NULL);
 313                                                   $$->args = $4;
 314                                                 }
 315         ;
 316
 317 array:                                          { $$ = NULL; }
 318         | '[' array_list ']'                    { $$ = $2; }
 319         | '[' '*' ']'                           { $$ = make_expr(EXPR_VOID); }
 320         ;
 321
 322 array_list: m_expr /* size of first dimension is optional */
 323         | array_list ',' expr                   { LINK($3, $1); $$ = $3; }
 324         | array_list ']' '[' expr               { LINK($4, $1); $$ = $4; }
 325         ;
 326
 327 m_attributes:                                   { $$ = NULL; }
 328         | attributes
 329         ;
 330
 331 attributes:
 332           '[' attrib_list ']'                   { $$ = $2; }
 333         ;
 334
 335 attrib_list: attribute
 336         | attrib_list ',' attribute             { LINK($3, $1); $$ = $3; }
 337         | attrib_list ']' '[' attribute         { LINK($4, $1); $$ = $4; }
 338         ;
 339
 340 attribute:
 341           tASYNC                                { $$ = make_attr(ATTR_ASYNC); }
 342         | tAUTOHANDLE                           { $$ = make_attr(ATTR_AUTO_HANDLE); }
 343         | tBINDABLE                             { $$ = make_attr(ATTR_BINDABLE); }
 344         | tCALLAS '(' ident ')'                 { $$ = make_attrp(ATTR_CALLAS, $3); }
 345         | tCASE '(' expr_list_const ')'         { $$ = make_attrp(ATTR_CASE, $3); }
 346         | tCONTEXTHANDLE                        { $$ = make_attrv(ATTR_CONTEXTHANDLE, 0); }
 347         | tCONTEXTHANDLENOSERIALIZE             { $$ = make_attrv(ATTR_CONTEXTHANDLE, 0); /* RPC_CONTEXT_HANDLE_DONT_SERIALIZE */ }
 348         | tCONTEXTHANDLESERIALIZE               { $$ = make_attrv(ATTR_CONTEXTHANDLE, 0); /* RPC_CONTEXT_HANDLE_SERIALIZE */ }
 349         | tCONTROL                              { $$ = make_attr(ATTR_CONTROL); }
 350         | tDEFAULT                              { $$ = make_attr(ATTR_DEFAULT); }
 351         | tDEFAULTVALUE '(' expr_const ')'      { $$ = make_attrp(ATTR_DEFAULTVALUE_EXPR, $3); }
 352         | tDEFAULTVALUE '(' aSTRING ')'         { $$ = make_attrp(ATTR_DEFAULTVALUE_STRING, $3); }
 353         | tDISPLAYBIND                          { $$ = make_attr(ATTR_DISPLAYBIND); }
 354         | tDLLNAME '(' aSTRING ')'              { $$ = make_attrp(ATTR_DLLNAME, $3); }
 355         | tDUAL                                 { $$ = make_attr(ATTR_DUAL); }
 356         | tENDPOINT '(' aSTRING ')'             { $$ = make_attrp(ATTR_ENDPOINT, $3); }
 357         | tENTRY '(' aSTRING ')'                { $$ = make_attrp(ATTR_ENTRY_STRING, $3); }
 358         | tENTRY '(' expr_const ')'             { $$ = make_attrp(ATTR_ENTRY_ORDINAL, $3); }
 359         | tEXPLICITHANDLE                       { $$ = make_attr(ATTR_EXPLICIT_HANDLE); }
 360         | tHANDLE                               { $$ = make_attr(ATTR_HANDLE); }
 361         | tHELPCONTEXT '(' expr_const ')'       { $$ = make_attrp(ATTR_HELPCONTEXT, $3); }
 362         | tHELPFILE '(' aSTRING ')'             { $$ = make_attrp(ATTR_HELPFILE, $3); }
 363         | tHELPSTRING '(' aSTRING ')'           { $$ = make_attrp(ATTR_HELPSTRING, $3); }
 364         | tHELPSTRINGCONTEXT '(' expr_const ')' { $$ = make_attrp(ATTR_HELPSTRINGCONTEXT, $3); }
 365         | tHELPSTRINGDLL '(' aSTRING ')'        { $$ = make_attrp(ATTR_HELPSTRINGDLL, $3); }
 366         | tHIDDEN                               { $$ = make_attr(ATTR_HIDDEN); }
 367         | tID '(' expr_const ')'                { $$ = make_attrp(ATTR_ID, $3); }
 368         | tIDEMPOTENT                           { $$ = make_attr(ATTR_IDEMPOTENT); }
 369         | tIIDIS '(' ident ')'                  { $$ = make_attrp(ATTR_IIDIS, $3); }
 370         | tIMPLICITHANDLE '(' tHANDLET aIDENTIFIER ')'  { $$ = make_attrp(ATTR_IMPLICIT_HANDLE, $4); }
 371         | tIN                                   { $$ = make_attr(ATTR_IN); }
 372         | tINPUTSYNC                            { $$ = make_attr(ATTR_INPUTSYNC); }
 373         | tLENGTHIS '(' m_exprs ')'             { $$ = make_attrp(ATTR_LENGTHIS, $3); }
 374         | tLOCAL                                { $$ = make_attr(ATTR_LOCAL); }
 375         | tNONCREATABLE                         { $$ = make_attr(ATTR_NONCREATABLE); }
 376         | tOBJECT                               { $$ = make_attr(ATTR_OBJECT); }
 377         | tODL                                  { $$ = make_attr(ATTR_ODL); }
 378         | tOLEAUTOMATION                        { $$ = make_attr(ATTR_OLEAUTOMATION); }
 379         | tOPTIONAL                             { $$ = make_attr(ATTR_OPTIONAL); }
 380         | tOUT                                  { $$ = make_attr(ATTR_OUT); }
 381         | tPOINTERDEFAULT '(' pointer_type ')'  { $$ = make_attrv(ATTR_POINTERDEFAULT, $3); }
 382         | tPROPGET                              { $$ = make_attr(ATTR_PROPGET); }
 383         | tPROPPUT                              { $$ = make_attr(ATTR_PROPPUT); }
 384         | tPROPPUTREF                           { $$ = make_attr(ATTR_PROPPUTREF); }
 385         | tPUBLIC                               { $$ = make_attr(ATTR_PUBLIC); }
 386         | tRANGE '(' expr_const ',' expr_const ')' { LINK($5, $3); $$ = make_attrp(ATTR_RANGE, $5); }
 387         | tREADONLY                             { $$ = make_attr(ATTR_READONLY); }
 388         | tRESTRICTED                           { $$ = make_attr(ATTR_RESTRICTED); }
 389         | tRETVAL                               { $$ = make_attr(ATTR_RETVAL); }
 390         | tSIZEIS '(' m_exprs ')'               { $$ = make_attrp(ATTR_SIZEIS, $3); }
 391         | tSOURCE                               { $$ = make_attr(ATTR_SOURCE); }
 392         | tSTRING                               { $$ = make_attr(ATTR_STRING); }
 393         | tSWITCHIS '(' expr ')'                { $$ = make_attrp(ATTR_SWITCHIS, $3); }
 394         | tSWITCHTYPE '(' type ')'              { $$ = make_attrp(ATTR_SWITCHTYPE, type_ref($3)); }
 395         | tTRANSMITAS '(' type ')'              { $$ = make_attrp(ATTR_TRANSMITAS, type_ref($3)); }
 396         | tUUID '(' aUUID ')'                   { $$ = make_attrp(ATTR_UUID, $3); }
 397         | tV1ENUM                               { $$ = make_attr(ATTR_V1ENUM); }
 398         | tVARARG                               { $$ = make_attr(ATTR_VARARG); }
 399         | tVERSION '(' version ')'              { $$ = make_attrv(ATTR_VERSION, $3); }
 400         | tWIREMARSHAL '(' type ')'             { $$ = make_attrp(ATTR_WIREMARSHAL, type_ref($3)); }
 401         | pointer_type                          { $$ = make_attrv(ATTR_POINTERTYPE, $1); }
 402         ;
 403
 404 callconv:
 405         | tSTDCALL
 406         ;
 407
 408 cases:                                          { $$ = NULL; }
 409         | cases case                            { if ($2) { LINK($2, $1); $$ = $2; }
 410                                                   else { $$ = $1; }
 411                                                 }
 412         ;
 413
 414 case:     tCASE expr ':' field                  { attr_t *a = make_attrp(ATTR_CASE, $2);
 415                                                   $$ = $4; if (!$$) $$ = make_var(NULL);
 416                                                   LINK(a, $$->attrs); $$->attrs = a;
 417                                                 }
 418         | tDEFAULT ':' field                    { attr_t *a = make_attr(ATTR_DEFAULT);
 419                                                   $$ = $3; if (!$$) $$ = make_var(NULL);
 420                                                   LINK(a, $$->attrs); $$->attrs = a;
 421                                                 }
 422         ;
 423
 424 constdef: tCONST type ident '=' expr_const      { $$ = reg_const($3);
 425                                                   set_type($$, $2, NULL);
 426                                                   $$->eval = $5;
 427                                                   $$->lval = $5->cval;
 428                                                 }
 429         ;
 430
 431 enums:                                          { $$ = NULL; }
 432         | enum_list ','                         { $$ = $1; }
 433         | enum_list
 434         ;
 435
 436 enum_list: enum
 437         | enum_list ',' enum                    { LINK($3, $1); $$ = $3;
 438                                                   if ($1 && !$3->eval)
 439                                                     $3->lval = $1->lval + 1;
 440                                                 }
 441         ;
 442
 443 enum:     ident '=' expr_const                  { $$ = reg_const($1);
 444                                                   $$->eval = $3;
 445                                                   $$->lval = $3->cval;
 446                                                   $$->type = make_type(RPC_FC_LONG, &std_int);
 447                                                 }
 448         | ident                                 { $$ = reg_const($1);
 449                                                   $$->lval = 0; /* default for first enum entry */
 450                                                   $$->type = make_type(RPC_FC_LONG, &std_int);
 451                                                 }
 452         ;
 453
 454 enumdef: tENUM t_ident '{' enums '}'            { $$ = get_typev(RPC_FC_ENUM16, $2, tsENUM);
 455                                                   $$->fields = $4;
 456                                                   $$->defined = TRUE;
 457                                                   if(in_typelib)
 458                                                       add_enum($$);
 459                                                 }
 460         ;
 461
 462 m_exprs:  m_expr
 463         | m_exprs ',' m_expr                    { LINK($3, $1); $$ = $3; }
 464         ;
 465
 466 /*
 467 exprs:                                          { $$ = make_expr(EXPR_VOID); }
 468         | expr_list
 469         ;
 470
 471 expr_list: expr
 472         | expr_list ',' expr                    { LINK($3, $1); $$ = $3; }
 473         ;
 474 */
 475
 476 m_expr:                                         { $$ = make_expr(EXPR_VOID); }
 477         | expr
 478         ;
 479
 480 expr:     aNUM                                  { $$ = make_exprl(EXPR_NUM, $1); }
 481         | aHEXNUM                               { $$ = make_exprl(EXPR_HEXNUM, $1); }
 482         | aIDENTIFIER                           { $$ = make_exprs(EXPR_IDENTIFIER, $1); }
 483         | expr '?' expr ':' expr                { $$ = make_expr3(EXPR_COND, $1, $3, $5); }
 484         | expr '|' expr                         { $$ = make_expr2(EXPR_OR , $1, $3); }
 485         | expr '&' expr                         { $$ = make_expr2(EXPR_AND, $1, $3); }
 486         | expr '+' expr                         { $$ = make_expr2(EXPR_ADD, $1, $3); }
 487         | expr '-' expr                         { $$ = make_expr2(EXPR_SUB, $1, $3); }
 488         | expr '*' expr                         { $$ = make_expr2(EXPR_MUL, $1, $3); }
 489         | expr '/' expr                         { $$ = make_expr2(EXPR_DIV, $1, $3); }
 490         | expr SHL expr                         { $$ = make_expr2(EXPR_SHL, $1, $3); }
 491         | expr SHR expr                         { $$ = make_expr2(EXPR_SHR, $1, $3); }
 492         | '~' expr                              { $$ = make_expr1(EXPR_NOT, $2); }
 493         | '-' expr %prec NEG                    { $$ = make_expr1(EXPR_NEG, $2); }
 494         | '*' expr %prec PPTR                   { $$ = make_expr1(EXPR_PPTR, $2); }
 495         | '(' type ')' expr %prec CAST          { $$ = make_exprt(EXPR_CAST, $2, $4); }
 496         | tSIZEOF '(' type ')'                  { $$ = make_exprt(EXPR_SIZEOF, $3, NULL); }
 497         | '(' expr ')'                          { $$ = $2; }
 498         ;
 499
 500 expr_list_const: expr_const
 501         | expr_list_const ',' expr_const        { LINK($3, $1); $$ = $3; }
 502         ;
 503
 504 expr_const: expr                                { $$ = $1;
 505                                                   if (!$$->is_const)
 506                                                       yyerror("expression is not constant\n");
 507                                                 }
 508         ;
 509
 510 externdef: tEXTERN tCONST type ident            { $$ = $4;
 511                                                   set_type($$, $3, NULL);
 512                                                 }
 513         ;
 514
 515 fields:                                         { $$ = NULL; }
 516         | fields field                          { if ($2) { LINK($2, $1); $$ = $2; }
 517                                                   else { $$ = $1; }
 518                                                 }
 519         ;
 520
 521 field:    s_field ';'                           { $$ = $1; }
 522         | m_attributes uniondef ';'             { $$ = make_var(NULL); $$->type = $2; $$->attrs = $1; }
 523         | attributes ';'                        { $$ = make_var(NULL); $$->attrs = $1; }
 524         | ';'                                   { $$ = NULL; }
 525         ;
 526
 527 s_field:  m_attributes type pident array        { $$ = $3; set_type($$, $2, $4); $$->attrs = $1; }
 528         ;
 529
 530 funcdef:
 531           m_attributes type callconv pident
 532           '(' m_args ')'                        { set_type($4, $2, NULL);
 533                                                   $4->attrs = $1;
 534                                                   $$ = make_func($4, $6);
 535                                                   if (is_attr($4->attrs, ATTR_IN)) {
 536                                                     yyerror("Inapplicable attribute");
 537                                                   }
 538                                                 }
 539         ;
 540
 541 m_ident:                                        { $$ = NULL; }
 542         | ident
 543         ;
 544
 545 t_ident:                                        { $$ = NULL; }
 546         | aIDENTIFIER                           { $$ = make_var($1); }
 547         | aKNOWNTYPE                            { $$ = make_var($1); }
 548         ;
 549
 550 ident:    aIDENTIFIER                           { $$ = make_var($1); }
 551 /* some "reserved words" used in attributes are also used as field names in some MS IDL files */
 552         | aKNOWNTYPE                            { $$ = make_var($<str>1); }
 553         | tASYNC                                { $$ = make_var($<str>1); }
 554         | tID                                   { $$ = make_var($<str>1); }
 555         | tRANGE                                { $$ = make_var($<str>1); }
 556         | tRETVAL                               { $$ = make_var($<str>1); }
 557         | tVERSION                              { $$ = make_var($<str>1); }
 558         ;
 559
 560 base_type: tBYTE                                { $$ = make_type(RPC_FC_BYTE, NULL); }
 561         | tWCHAR                                { $$ = make_type(RPC_FC_WCHAR, NULL); }
 562         | int_std
 563         | tSIGNED int_std                       { $$ = $2; $$->sign = 1; }
 564         | tUNSIGNED int_std                     { $$ = $2; $$->sign = -1;
 565                                                   switch ($$->type) {
 566                                                   case RPC_FC_CHAR:  $$->type = RPC_FC_BYTE; $$->sign = 0; break;
 567                                                   case RPC_FC_SMALL: $$->type = RPC_FC_USMALL; break;
 568                                                   case RPC_FC_SHORT: $$->type = RPC_FC_USHORT; break;
 569                                                   case RPC_FC_LONG:  $$->type = RPC_FC_ULONG;  break;
 570                                                   case RPC_FC_HYPER:
 571                                                     if (!$$->ref) { $$->ref = &std_uhyper; $$->sign = 0; }
 572                                                     break;
 573                                                   default: break;
 574                                                   }
 575                                                 }
 576         | tUNSIGNED                             { $$ = make_type(RPC_FC_ULONG, &std_int); $$->sign = -1; }
 577         | tFLOAT                                { $$ = make_type(RPC_FC_FLOAT, NULL); }
 578         | tSINGLE                               { $$ = make_type(RPC_FC_FLOAT, NULL); }
 579         | tDOUBLE                               { $$ = make_type(RPC_FC_DOUBLE, NULL); }
 580         | tBOOLEAN                              { $$ = make_type(RPC_FC_BYTE, &std_bool); /* ? */ }
 581         | tERRORSTATUST                         { $$ = make_type(RPC_FC_ERROR_STATUS_T, NULL); }
 582         | tHANDLET                              { $$ = make_type(RPC_FC_BIND_PRIMITIVE, NULL); /* ? */ }
 583         ;
 584
 585 m_int:
 586         | tINT
 587         ;
 588
 589 int_std:  tINT                                  { $$ = make_type(RPC_FC_LONG, &std_int); } /* win32 only */
 590         | tSHORT m_int                          { $$ = make_type(RPC_FC_SHORT, NULL); }
 591         | tSMALL                                { $$ = make_type(RPC_FC_SMALL, NULL); }
 592         | tLONG m_int                           { $$ = make_type(RPC_FC_LONG, NULL); }
 593         | tHYPER m_int                          { $$ = make_type(RPC_FC_HYPER, NULL); }
 594         | tINT64                                { $$ = make_type(RPC_FC_HYPER, &std_int64); }
 595         | tCHAR                                 { $$ = make_type(RPC_FC_CHAR, NULL); }
 596         ;
 597
 598 coclass:  tCOCLASS aIDENTIFIER                  { $$ = make_class($2); }
 599         | tCOCLASS aKNOWNTYPE                   { $$ = make_class($2); }
 600         ;
 601
 602 coclasshdr: attributes coclass                  { $$ = $2;
 603                                                   $$->attrs = $1;
 604                                                   if (!parse_only && do_header)
 605                                                     write_coclass($$);
 606                                                 }
 607         ;
 608
 609 coclassdef: coclasshdr '{' coclass_ints '}'     { $$ = $1;
 610                                                   $$->ifaces = $3;
 611                                                 }
 612         ;
 613
 614 coclass_ints:                                   { $$ = NULL; }
 615         | coclass_ints coclass_int              { LINK($2, $1); $$ = $2; }
 616         ;
 617
 618 coclass_int:
 619           m_attributes interfacedec             { $$ = make_ifref($2); $$->attrs = $1; }
 620         ;
 621
 622 dispinterface: tDISPINTERFACE aIDENTIFIER       { $$ = get_type(0, $2, 0); }
 623         |      tDISPINTERFACE aKNOWNTYPE        { $$ = get_type(0, $2, 0); }
 624         ;
 625
 626 dispinterfacehdr: attributes dispinterface      { $$ = $2;
 627                                                   if ($$->defined) yyerror("multiple definition error\n");
 628                                                   $$->attrs = $1;
 629                                                   $$->attrs = make_attr(ATTR_DISPINTERFACE);
 630                                                   LINK($$->attrs, $1);
 631                                                   $$->ref = find_type("IDispatch", 0);
 632                                                   if (!$$->ref) yyerror("IDispatch is undefined\n");
 633                                                   $$->defined = TRUE;
 634                                                   if (!parse_only && do_header) write_forward($$);
 635                                                 }
 636         ;
 637
 638 dispint_props: tPROPERTIES ':'                  { $$ = NULL; }
 639         | dispint_props s_field ';'             { LINK($2, $1); $$ = $2; }
 640         ;
 641
 642 dispint_meths: tMETHODS ':'                     { $$ = NULL; }
 643         | dispint_meths funcdef ';'             { LINK($2, $1); $$ = $2; }
 644         ;
 645
 646 dispinterfacedef: dispinterfacehdr '{'
 647           dispint_props
 648           dispint_meths
 649           '}'                                   { $$ = $1;
 650                                                   $$->fields = $3;
 651                                                   $$->funcs = $4;
 652                                                   if (!parse_only && do_header) write_dispinterface($$);
 653                                                 }
 654 /* FIXME: not sure how to handle this yet
 655         | dispinterfacehdr '{' interface '}'    { $$ = $1;
 656                                                   if (!parse_only && do_header) write_interface($$);
 657                                                 }
 658 */
 659         ;
 660
 661 inherit:                                        { $$ = NULL; }
 662         | ':' aKNOWNTYPE                        { $$ = find_type2($2, 0); }
 663         ;
 664
 665 interface: tINTERFACE aIDENTIFIER               { $$ = get_type(RPC_FC_IP, $2, 0); }
 666         |  tINTERFACE aKNOWNTYPE                { $$ = get_type(RPC_FC_IP, $2, 0); }
 667         ;
 668
 669 interfacehdr: attributes interface              { $$ = $2;
 670                                                   if ($$->defined) yyerror("multiple definition error\n");
 671                                                   $$->attrs = $1;
 672                                                   $$->defined = TRUE;
 673                                                   if (!parse_only && do_header) write_forward($$);
 674                                                 }
 675         ;
 676
 677 interfacedef: interfacehdr inherit
 678           '{' int_statements '}'                { $$ = $1;
 679                                                   $$->ref = $2;
 680                                                   $$->funcs = $4;
 681                                                   if (!parse_only && do_header) write_interface($$);
 682                                                 }
 683 /* MIDL is able to import the definition of a base class from inside the
 684  * definition of a derived class, I'll try to support it with this rule */
 685         | interfacehdr ':' aIDENTIFIER
 686           '{' import int_statements '}'         { $$ = $1;
 687                                                   $$->ref = find_type2($3, 0);
 688                                                   if (!$$->ref) yyerror("base class %s not found in import\n", $3);
 689                                                   $$->funcs = $6;
 690                                                   if (!parse_only && do_header) write_interface($$);
 691                                                 }
 692         | dispinterfacedef                      { $$ = $1; }
 693         ;
 694
 695 interfacedec:
 696           interface ';'                         { $$ = $1; if (!parse_only && do_header) write_forward($$); }
 697         | dispinterface ';'                     { $$ = $1; if (!parse_only && do_header) write_forward($$); }
 698         ;
 699
 700 module:   tMODULE aIDENTIFIER                   { $$ = make_type(0, NULL); $$->name = $2; }
 701         | tMODULE aKNOWNTYPE                    { $$ = make_type(0, NULL); $$->name = $2; }
 702         ;
 703
 704 modulehdr: attributes module                    { $$ = $2;
 705                                                   $$->attrs = $1;
 706                                                 }
 707         ;
 708
 709 moduledef: modulehdr '{' int_statements '}'     { $$ = $1;
 710                                                   $$->funcs = $3;
 711                                                   /* FIXME: if (!parse_only && do_header) write_module($$); */
 712                                                 }
 713         ;
 714
 715 p_ident:  '*' pident %prec PPTR                 { $$ = $2; $$->ptr_level++; }
 716         | tCONST p_ident                        { $$ = $2; /* FIXME */ }
 717         ;
 718
 719 pident:   ident
 720         | p_ident
 721         | '(' pident ')'                        { $$ = $2; }
 722         ;
 723
 724 pident_list:
 725           pident
 726         | pident_list ',' pident                { LINK($3, $1); $$ = $3; }
 727         ;
 728
 729 pointer_type:
 730           tREF                                  { $$ = RPC_FC_RP; }
 731         | tUNIQUE                               { $$ = RPC_FC_UP; }
 732         | tPTR                                  { $$ = RPC_FC_FP; }
 733         ;
 734
 735 structdef: tSTRUCT t_ident '{' fields '}'       { $$ = get_typev(RPC_FC_STRUCT, $2, tsSTRUCT);
 736                                                   /* overwrite RPC_FC_STRUCT with a more exact type */
 737                                                   $$->type = get_struct_type( $4 );
 738                                                   $$->fields = $4;
 739                                                   $$->defined = TRUE;
 740                                                   if(in_typelib)
 741                                                       add_struct($$);
 742                                                 }
 743         ;
 744
 745 type:     tVOID                                 { $$ = make_tref(NULL, make_type(0, NULL)); }
 746         | aKNOWNTYPE                            { $$ = make_tref($1, find_type($1, 0)); }
 747         | base_type                             { $$ = make_tref(NULL, $1); }
 748         | tCONST type                           { $$ = uniq_tref($2); $$->ref->is_const = TRUE; }
 749         | enumdef                               { $$ = make_tref(NULL, $1); }
 750         | tENUM aIDENTIFIER                     { $$ = make_tref(NULL, find_type2($2, tsENUM)); }
 751         | structdef                             { $$ = make_tref(NULL, $1); }
 752         | tSTRUCT aIDENTIFIER                   { $$ = make_tref(NULL, get_type(RPC_FC_STRUCT, $2, tsSTRUCT)); }
 753         | uniondef                              { $$ = make_tref(NULL, $1); }
 754         | tUNION aIDENTIFIER                    { $$ = make_tref(NULL, find_type2($2, tsUNION)); }
 755         ;
 756
 757 typedef: tTYPEDEF m_attributes type pident_list { typeref_t *tref = uniq_tref($3);
 758                                                   $4->tname = tref->name;
 759                                                   tref->name = NULL;
 760                                                   $$ = type_ref(tref);
 761                                                   $$->attrs = $2;
 762                                                   if (!parse_only && do_header)
 763                                                     write_typedef($$, $4);
 764                                                   if (in_typelib && $$->attrs)
 765                                                     add_typedef($$, $4);
 766                                                   reg_types($$, $4, 0);
 767                                                 }
 768         ;
 769
 770 uniondef: tUNION t_ident '{' fields '}'         { $$ = get_typev(RPC_FC_NON_ENCAPSULATED_UNION, $2, tsUNION);
 771                                                   $$->fields = $4;
 772                                                   $$->defined = TRUE;
 773                                                 }
 774         | tUNION t_ident
 775           tSWITCH '(' s_field ')'
 776           m_ident '{' cases '}'                 { var_t *u = $7;
 777                                                   $$ = get_typev(RPC_FC_ENCAPSULATED_UNION, $2, tsUNION);
 778                                                   if (!u) u = make_var("tagged_union");
 779                                                   u->type = make_type(RPC_FC_NON_ENCAPSULATED_UNION, NULL);
 780                                                   u->type->fields = $9;
 781                                                   u->type->defined = TRUE;
 782                                                   LINK(u, $5); $$->fields = u;
 783                                                   $$->defined = TRUE;
 784                                                 }
 785         ;
 786
 787 version:
 788           aNUM                                  { $$ = MAKELONG($1, 0); }
 789         | aNUM '.' aNUM                         { $$ = MAKELONG($1, $3); }
 790         ;
 791
 792 %%
 793
 794 static attr_t *make_attr(enum attr_type type)
 795 {
 796   attr_t *a = xmalloc(sizeof(attr_t));
 797   a->type = type;
 798   a->u.ival = 0;
 799   INIT_LINK(a);
 800   return a;
 801 }
 802
 803 static attr_t *make_attrv(enum attr_type type, unsigned long val)
 804 {
 805   attr_t *a = xmalloc(sizeof(attr_t));
 806   a->type = type;
 807   a->u.ival = val;
 808   INIT_LINK(a);
 809   return a;
 810 }
 811
 812 static attr_t *make_attrp(enum attr_type type, void *val)
 813 {
 814   attr_t *a = xmalloc(sizeof(attr_t));
 815   a->type = type;
 816   a->u.pval = val;
 817   INIT_LINK(a);
 818   return a;
 819 }
 820
 821 static expr_t *make_expr(enum expr_type type)
 822 {
 823   expr_t *e = xmalloc(sizeof(expr_t));
 824   e->type = type;
 825   e->ref = NULL;
 826   e->u.lval = 0;
 827   e->is_const = FALSE;
 828   INIT_LINK(e);
 829   return e;
 830 }
 831
 832 static expr_t *make_exprl(enum expr_type type, long val)
 833 {
 834   expr_t *e = xmalloc(sizeof(expr_t));
 835   e->type = type;
 836   e->ref = NULL;
 837   e->u.lval = val;
 838   e->is_const = FALSE;
 839   INIT_LINK(e);
 840   /* check for numeric constant */
 841   if (type == EXPR_NUM || type == EXPR_HEXNUM) {
 842     e->is_const = TRUE;
 843     e->cval = val;
 844   }
 845   return e;
 846 }
 847
 848 static expr_t *make_exprs(enum expr_type type, char *val)
 849 {
 850   expr_t *e;
 851   e = xmalloc(sizeof(expr_t));
 852   e->type = type;
 853   e->ref = NULL;
 854   e->u.sval = val;
 855   e->is_const = FALSE;
 856   INIT_LINK(e);
 857   /* check for predefined constants */
 858   if (type == EXPR_IDENTIFIER) {
 859     var_t *c = find_const(val, 0);
 860     if (c) {
 861       e->u.sval = c->name;
 862       free(val);
 863       e->is_const = TRUE;
 864       e->cval = c->lval;
 865     }
 866   }
 867   return e;
 868 }
 869
 870 static expr_t *make_exprt(enum expr_type type, typeref_t *tref, expr_t *expr)
 871 {
 872   expr_t *e;
 873   e = xmalloc(sizeof(expr_t));
 874   e->type = type;
 875   e->ref = expr;
 876   e->u.tref = tref;
 877   e->is_const = FALSE;
 878   INIT_LINK(e);
 879   /* check for cast of constant expression */
 880   if (type == EXPR_CAST && expr->is_const) {
 881     e->is_const = TRUE;
 882     e->cval = expr->cval;
 883   }
 884   return e;
 885 }
 886
 887 static expr_t *make_expr1(enum expr_type type, expr_t *expr)
 888 {
 889   expr_t *e;
 890   e = xmalloc(sizeof(expr_t));
 891   e->type = type;
 892   e->ref = expr;
 893   e->u.lval = 0;
 894   e->is_const = FALSE;
 895   INIT_LINK(e);
 896   /* check for compile-time optimization */
 897   if (expr->is_const) {
 898     e->is_const = TRUE;
 899     switch (type) {
 900     case EXPR_NEG:
 901       e->cval = -expr->cval;
 902       break;
 903     case EXPR_NOT:
 904       e->cval = ~expr->cval;
 905       break;
 906     default:
 907       e->is_const = FALSE;
 908       break;
 909     }
 910   }
 911   return e;
 912 }
 913
 914 static expr_t *make_expr2(enum expr_type type, expr_t *expr1, expr_t *expr2)
 915 {
 916   expr_t *e;
 917   e = xmalloc(sizeof(expr_t));
 918   e->type = type;
 919   e->ref = expr1;
 920   e->u.ext = expr2;
 921   e->is_const = FALSE;
 922   INIT_LINK(e);
 923   /* check for compile-time optimization */
 924   if (expr1->is_const && expr2->is_const) {
 925     e->is_const = TRUE;
 926     switch (type) {
 927     case EXPR_ADD:
 928       e->cval = expr1->cval + expr2->cval;
 929       break;
 930     case EXPR_SUB:
 931       e->cval = expr1->cval - expr2->cval;
 932       break;
 933     case EXPR_MUL:
 934       e->cval = expr1->cval * expr2->cval;
 935       break;
 936     case EXPR_DIV:
 937       e->cval = expr1->cval / expr2->cval;
 938       break;
 939     case EXPR_OR:
 940       e->cval = expr1->cval | expr2->cval;
 941       break;
 942     case EXPR_AND:
 943       e->cval = expr1->cval & expr2->cval;
 944       break;
 945     case EXPR_SHL:
 946       e->cval = expr1->cval << expr2->cval;
 947       break;
 948     case EXPR_SHR:
 949       e->cval = expr1->cval >> expr2->cval;
 950       break;
 951     default:
 952       e->is_const = FALSE;
 953       break;
 954     }
 955   }
 956   return e;
 957 }
 958
 959 static expr_t *make_expr3(enum expr_type type, expr_t *expr1, expr_t *expr2, expr_t *expr3)
 960 {
 961   expr_t *e;
 962   e = xmalloc(sizeof(expr_t));
 963   e->type = type;
 964   e->ref = expr1;
 965   e->u.ext = expr2;
 966   e->ext2 = expr3;
 967   e->is_const = FALSE;
 968   INIT_LINK(e);
 969   /* check for compile-time optimization */
 970   if (expr1->is_const && expr2->is_const && expr3->is_const) {
 971     e->is_const = TRUE;
 972     switch (type) {
 973     case EXPR_COND:
 974       e->cval = expr1->cval ? expr2->cval : expr3->cval;
 975       break;
 976     default:
 977       e->is_const = FALSE;
 978       break;
 979     }
 980   }
 981   return e;
 982 }
 983
 984 static type_t *make_type(unsigned char type, type_t *ref)
 985 {
 986   type_t *t = xmalloc(sizeof(type_t));
 987   t->name = NULL;
 988   t->type = type;
 989   t->ref = ref;
 990   t->rname = NULL;
 991   t->attrs = NULL;
 992   t->funcs = NULL;
 993   t->fields = NULL;
 994   t->ignore = parse_only;
 995   t->is_const = FALSE;
 996   t->sign = 0;
 997   t->defined = FALSE;
 998   t->written = FALSE;
 999   t->typelib_idx = -1;
1000   INIT_LINK(t);
1001   return t;
1002 }
1003
1004 static typeref_t *make_tref(char *name, type_t *ref)
1005 {
1006   typeref_t *t = xmalloc(sizeof(typeref_t));
1007   t->name = name;
1008   t->ref = ref;
1009   t->uniq = ref ? 0 : 1;
1010   return t;
1011 }
1012
1013 static typeref_t *uniq_tref(typeref_t *ref)
1014 {
1015   typeref_t *t = ref;
1016   type_t *tp;
1017   if (t->uniq) return t;
1018   tp = make_type(0, t->ref);
1019   tp->name = t->name;
1020   t->name = NULL;
1021   t->ref = tp;
1022   t->uniq = 1;
1023   return t;
1024 }
1025
1026 static type_t *type_ref(typeref_t *ref)
1027 {
1028   type_t *t = ref->ref;
1029   if (ref->name) free(ref->name);
1030   free(ref);
1031   return t;
1032 }
1033
1034 static void set_type(var_t *v, typeref_t *ref, expr_t *arr)
1035 {
1036   v->type = ref->ref;
1037   v->tname = ref->name;
1038   ref->name = NULL;
1039   free(ref);
1040   v->array = arr;
1041 }
1042
1043 static ifref_t *make_ifref(type_t *iface)
1044 {
1045   ifref_t *l = xmalloc(sizeof(ifref_t));
1046   l->iface = iface;
1047   l->attrs = NULL;
1048   INIT_LINK(l);
1049   return l;
1050 }
1051
1052 static var_t *make_var(char *name)
1053 {
1054   var_t *v = xmalloc(sizeof(var_t));
1055   v->name = name;
1056   v->ptr_level = 0;
1057   v->type = NULL;
1058   v->tname = NULL;
1059   v->attrs = NULL;
1060   v->array = NULL;
1061   v->eval = NULL;
1062   v->lval = 0;
1063   INIT_LINK(v);
1064   return v;
1065 }
1066
1067 static func_t *make_func(var_t *def, var_t *args)
1068 {
1069   func_t *f = xmalloc(sizeof(func_t));
1070   f->def = def;
1071   f->args = args;
1072   f->ignore = parse_only;
1073   f->idx = -1;
1074   INIT_LINK(f);
1075   return f;
1076 }
1077
1078 static class_t *make_class(char *name)
1079 {
1080   class_t *c = xmalloc(sizeof(class_t));
1081   c->name = name;
1082   c->attrs = NULL;
1083   c->ifaces = NULL;
1084   INIT_LINK(c);
1085   return c;
1086 }
1087
1088 #define HASHMAX 64
1089
1090 static int hash_ident(const char *name)
1091 {
1092   const char *p = name;
1093   int sum = 0;
1094   /* a simple sum hash is probably good enough */
1095   while (*p) {
1096     sum += *p;
1097     p++;
1098   }
1099   return sum & (HASHMAX-1);
1100 }
1101
1102 /***** type repository *****/
1103
1104 struct rtype {
1105   char *name;
1106   type_t *type;
1107   int t;
1108   struct rtype *next;
1109 };
1110
1111 struct rtype *type_hash[HASHMAX];
1112
1113 static type_t *reg_type(type_t *type, char *name, int t)
1114 {
1115   struct rtype *nt;
1116   int hash;
1117   if (!name) {
1118     yyerror("registering named type without name\n");
1119     return type;
1120   }
1121   hash = hash_ident(name);
1122   nt = xmalloc(sizeof(struct rtype));
1123   nt->name = name;
1124   nt->type = type;
1125   nt->t = t;
1126   nt->next = type_hash[hash];
1127   type_hash[hash] = nt;
1128   return type;
1129 }
1130
1131 /* determine pointer type from attrs */
1132 static unsigned char get_pointer_type( type_t *type )
1133 {
1134   int t;
1135   if (is_attr( type->attrs, ATTR_STRING ))
1136   {
1137     type_t *t = type;
1138     while( t->type == 0 && t->ref )
1139       t = t->ref;
1140     switch( t->type )
1141     {
1142     case RPC_FC_CHAR:
1143       return RPC_FC_C_CSTRING;
1144     case RPC_FC_WCHAR:
1145       return RPC_FC_C_WSTRING;
1146     }
1147   }
1148   t = get_attrv( type->attrs, ATTR_POINTERTYPE );
1149   if (t) return t;
1150   return RPC_FC_FP;
1151 }
1152
1153 static type_t *reg_types(type_t *type, var_t *names, int t)
1154 {
1155   type_t *ptr = type;
1156   int ptrc = 0;
1157
1158   while (names) {
1159     var_t *next = NEXT_LINK(names);
1160     if (names->name) {
1161       type_t *cur = ptr;
1162       int cptr = names->ptr_level;
1163       if (cptr > ptrc) {
1164         while (cptr > ptrc) {
1165           int t = get_pointer_type( cur );
1166           cur = ptr = make_type(t, cur);
1167           ptrc++;
1168         }
1169       } else {
1170         while (cptr < ptrc) {
1171           cur = cur->ref;
1172           cptr++;
1173         }
1174       }
1175       reg_type(cur, names->name, t);
1176     }
1177     free(names);
1178     names = next;
1179   }
1180   return type;
1181 }
1182
1183 static type_t *find_type(const char *name, int t)
1184 {
1185   struct rtype *cur = type_hash[hash_ident(name)];
1186   while (cur && (cur->t != t || strcmp(cur->name, name)))
1187     cur = cur->next;
1188   if (!cur) {
1189     yyerror("type %s not found\n", name);
1190     return NULL;
1191   }
1192   return cur->type;
1193 }
1194
1195 static type_t *find_type2(char *name, int t)
1196 {
1197   type_t *tp = find_type(name, t);
1198   free(name);
1199   return tp;
1200 }
1201
1202 int is_type(const char *name)
1203 {
1204   struct rtype *cur = type_hash[hash_ident(name)];
1205   while (cur && (cur->t || strcmp(cur->name, name)))
1206     cur = cur->next;
1207   if (cur) return TRUE;
1208   return FALSE;
1209 }
1210
1211 static type_t *get_type(unsigned char type, char *name, int t)
1212 {
1213   struct rtype *cur = NULL;
1214   type_t *tp;
1215   if (name) {
1216     cur = type_hash[hash_ident(name)];
1217     while (cur && (cur->t != t || strcmp(cur->name, name)))
1218       cur = cur->next;
1219   }
1220   if (cur) {
1221     free(name);
1222     return cur->type;
1223   }
1224   tp = make_type(type, NULL);
1225   tp->name = name;
1226   if (!name) return tp;
1227   return reg_type(tp, name, t);
1228 }
1229
1230 static type_t *get_typev(unsigned char type, var_t *name, int t)
1231 {
1232   char *sname = NULL;
1233   if (name) {
1234     sname = name->name;
1235     free(name);
1236   }
1237   return get_type(type, sname, t);
1238 }
1239
1240 static int get_struct_type(var_t *field)
1241 {
1242   int has_pointer = 0;
1243   int has_conformant_array = 0;
1244   int has_conformant_string = 0;
1245
1246   while (field)
1247   {
1248     type_t *t = field->type;
1249
1250     /* get the base type */
1251     while( (t->type == 0) && t->ref )
1252       t = t->ref;
1253
1254     switch (t->type)
1255     {
1256     /*
1257      * RPC_FC_BYTE, RPC_FC_STRUCT, etc
1258      *  Simple types don't effect the type of struct.
1259      *  A struct containing a simple struct is still a simple struct.
1260      *  So long as we can block copy the data, we return RPC_FC_STRUCT.
1261      */
1262     case 0: /* void pointer */
1263     case RPC_FC_BYTE:
1264     case RPC_FC_CHAR:
1265     case RPC_FC_SMALL:
1266     case RPC_FC_USMALL:
1267     case RPC_FC_WCHAR:
1268     case RPC_FC_SHORT:
1269     case RPC_FC_USHORT:
1270     case RPC_FC_LONG:
1271     case RPC_FC_ULONG:
1272     case RPC_FC_INT3264:
1273     case RPC_FC_UINT3264:
1274     case RPC_FC_HYPER:
1275     case RPC_FC_FLOAT:
1276     case RPC_FC_DOUBLE:
1277     case RPC_FC_STRUCT:
1278     case RPC_FC_ENUM16:
1279     case RPC_FC_ENUM32:
1280       break;
1281
1282     case RPC_FC_UP:
1283     case RPC_FC_FP:
1284       has_pointer = 1;
1285       break;
1286     case RPC_FC_CARRAY:
1287       has_conformant_array = 1;
1288       break;
1289     case RPC_FC_C_CSTRING:
1290     case RPC_FC_C_WSTRING:
1291       has_conformant_string = 1;
1292       break;
1293
1294     /*
1295      * Propagate member attributes
1296      *  a struct should be at least as complex as its member
1297      */
1298     case RPC_FC_CVSTRUCT:
1299       has_conformant_string = 1;
1300       has_pointer = 1;
1301       break;
1302
1303     case RPC_FC_CPSTRUCT:
1304       has_conformant_array = 1;
1305       has_pointer = 1;
1306       break;
1307
1308     case RPC_FC_CSTRUCT:
1309       has_conformant_array = 1;
1310       break;
1311
1312     case RPC_FC_PSTRUCT:
1313       has_pointer = 1;
1314       break;
1315
1316     default:
1317       fprintf(stderr,"Unknown struct member %s with type (0x%02x)\n",
1318               field->name, t->type);
1319       /* fallthru - treat it as complex */
1320
1321     /* as soon as we see one of these these members, it's bogus... */
1322     case RPC_FC_IP:
1323     case RPC_FC_ENCAPSULATED_UNION:
1324     case RPC_FC_NON_ENCAPSULATED_UNION:
1325     case RPC_FC_TRANSMIT_AS:
1326     case RPC_FC_REPRESENT_AS:
1327     case RPC_FC_PAD:
1328     case RPC_FC_EMBEDDED_COMPLEX:
1329     case RPC_FC_BOGUS_STRUCT:
1330       return RPC_FC_BOGUS_STRUCT;
1331     }
1332     field = NEXT_LINK(field);
1333   }
1334
1335   if( has_conformant_string && has_pointer )
1336     return RPC_FC_CVSTRUCT;
1337   if( has_conformant_array && has_pointer )
1338     return RPC_FC_CPSTRUCT;
1339   if( has_conformant_array )
1340     return RPC_FC_CSTRUCT;
1341   if( has_pointer )
1342     return RPC_FC_PSTRUCT;
1343   return RPC_FC_STRUCT;
1344 }
1345
1346 /***** constant repository *****/
1347
1348 struct rconst {
1349   char *name;
1350   var_t *var;
1351   struct rconst *next;
1352 };
1353
1354 struct rconst *const_hash[HASHMAX];
1355
1356 static var_t *reg_const(var_t *var)
1357 {
1358   struct rconst *nc;
1359   int hash;
1360   if (!var->name) {
1361     yyerror("registering constant without name\n");
1362     return var;
1363   }
1364   hash = hash_ident(var->name);
1365   nc = xmalloc(sizeof(struct rconst));
1366   nc->name = var->name;
1367   nc->var = var;
1368   nc->next = const_hash[hash];
1369   const_hash[hash] = nc;
1370   return var;
1371 }
1372
1373 static var_t *find_const(char *name, int f)
1374 {
1375   struct rconst *cur = const_hash[hash_ident(name)];
1376   while (cur && strcmp(cur->name, name))
1377     cur = cur->next;
1378   if (!cur) {
1379     if (f) yyerror("constant %s not found\n", name);
1380     return NULL;
1381   }
1382   return cur->var;
1383 }