gcc/java/parse.h

   1 /* Language parser definitions for the GNU compiler for the Java(TM) language.
   2    Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
   3    Contributed by Alexandre Petit-Bianco (apbianco@cygnus.com)
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC 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
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.
  21
  22 Java and all Java-based marks are trademarks or registered trademarks
  23 of Sun Microsystems, Inc. in the United States and other countries.
  24 The Free Software Foundation is independent of Sun Microsystems, Inc.  */
  25
  26 #ifndef JV_LANG_H
  27 #define JV_LANG_H
  28
  29 #include "lex.h"
  30
  31 /* Extern global variable declarations */
  32 extern int java_error_count;
  33 extern struct obstack temporary_obstack;
  34 extern struct obstack permanent_obstack;
  35 extern int quiet_flag;
  36
  37 #ifndef JC1_LITE
  38 /* Function extern to java/ */
  39 extern int int_fits_type_p PROTO ((tree, tree));
  40 extern tree stabilize_reference PROTO ((tree));
  41 #endif
  42
  43 /* Macros for verbose debug info  */
  44 #ifdef  VERBOSE_SKELETON
  45 #define RULE( rule ) printf ( "jv_yacc:%d: rule %s\n", lineno, rule )
  46 #else
  47 #define RULE( rule )
  48 #endif
  49
  50 #ifdef VERBOSE_SKELETON
  51 #undef SOURCE_FRONTEND_DEBUG
  52 #define SOURCE_FRONTEND_DEBUG(X)                                \
  53   {if (!quiet_flag) {printf ("* "); printf X; putchar ('\n');} }
  54 #else
  55 #define SOURCE_FRONTEND_DEBUG(X)
  56 #endif
  57
  58 /* Macro for error recovering  */
  59 #ifdef YYDEBUG
  60 #define RECOVERED                                       \
  61   { if (!quiet_flag) {printf ("** Recovered\n");} }
  62 #define DRECOVERED(s)                                           \
  63   { if (!quiet_flag) {printf ("** Recovered (%s)\n", #s);}}
  64 #else
  65 #define RECOVERED
  66 #define DRECOVERED(s)
  67 #endif
  68
  69 #define DRECOVER(s) {yyerrok; DRECOVERED(s)}
  70 #define RECOVER     {yyerrok; RECOVERED}
  71
  72 #define YYERROR_NOW ctxp->java_error_flag = 1
  73 #define YYNOT_TWICE if (ctxp->prevent_ese != lineno)
  74
  75 /* Accepted modifiers */
  76 #define CLASS_MODIFIERS ACC_PUBLIC|ACC_ABSTRACT|ACC_FINAL
  77 #define FIELD_MODIFIERS ACC_PUBLIC|ACC_PROTECTED|ACC_PRIVATE|ACC_FINAL| \
  78                         ACC_STATIC|ACC_TRANSIENT|ACC_VOLATILE
  79 #define METHOD_MODIFIERS ACC_PUBLIC|ACC_PROTECTED|ACC_PRIVATE|ACC_ABSTRACT| \
  80                          ACC_STATIC|ACC_FINAL|ACC_SYNCHRONIZED|ACC_NATIVE
  81 #define INTERFACE_MODIFIERS ACC_PUBLIC|ACC_ABSTRACT
  82 #define INTERFACE_METHOD_MODIFIERS ACC_PUBLIC|ACC_ABSTRACT
  83 #define INTERFACE_FIELD_MODIFIERS ACC_PUBLIC|ACC_STATIC|ACC_FINAL
  84
  85 /* Getting a modifier WFL */
  86 #define MODIFIER_WFL(M)   (ctxp->modifier_ctx [(M) - PUBLIC_TK])
  87
  88 /* Check on modifiers */
  89 #define THIS_MODIFIER_ONLY(f, m, v, count, l)                           \
  90   if ((f) & (m))                                                        \
  91     {                                                                   \
  92       tree node = ctxp->modifier_ctx [v];                               \
  93       if ((l)                                                           \
  94           && ((EXPR_WFL_COLNO (node) > EXPR_WFL_COLNO (l))              \
  95               || (EXPR_WFL_LINENO (node) > EXPR_WFL_LINENO (l))))       \
  96         l = node;                                                       \
  97       else if (!(l))                                                    \
  98         l = node;                                                       \
  99       count++;                                                          \
 100     }
 101
 102 #define ABSTRACT_CHECK(FLAG, V, CL, S)                          \
 103   if ((FLAG) & (V))                                             \
 104     parse_error_context ((CL), S " method can't be abstract");
 105
 106 #define JCONSTRUCTOR_CHECK(FLAG, V, CL, S)                      \
 107   if ((FLAG) & (V))                                             \
 108     parse_error_context ((CL), "Constructor can't be %s", (S)); \
 109
 110 /* Misc. */
 111 #define exit_java_complete_class()              \
 112   {                                             \
 113     pop_obstacks ();                            \
 114     return;                                     \
 115   }
 116
 117 #define CLASS_OR_INTERFACE(decl, s1, s2)                        \
 118    (decl ?                                                      \
 119     ((get_access_flags_from_decl (TYPE_NAME (TREE_TYPE (decl))) \
 120       & ACC_INTERFACE) ?                                        \
 121      s2 : s1) : ((s1 [0]=='S'|| s1 [0]=='s') ?                  \
 122                  (s1 [0]=='S' ? "Supertype" : "supertype") :    \
 123                  (s1 [0] > 'A' ? "Type" : "type")))
 124
 125 #define GET_REAL_TYPE(TYPE)                                     \
 126   (TREE_CODE (TYPE) == TREE_LIST ? TREE_PURPOSE (TYPE) : TYPE)
 127
 128 #define GET_METHOD_NAME(METHOD)                                 \
 129   (TREE_CODE (DECL_NAME (METHOD)) == EXPR_WITH_FILE_LOCATION ?  \
 130    EXPR_WFL_NODE (DECL_NAME (METHOD)) : DECL_NAME (METHOD))
 131
 132 /* Get TYPE name string, regardless whether TYPE is a class or an
 133    array. */
 134 #define GET_TYPE_NAME(TYPE)                             \
 135   (TREE_CODE (TYPE_NAME (TYPE)) == IDENTIFIER_NODE ?    \
 136    IDENTIFIER_POINTER (TYPE_NAME (TYPE)) :              \
 137    IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (TYPE))))
 138
 139 /* Pedantic warning on obsolete modifiers. Note: when cl is NULL,
 140    flags was set artificially, such as for a interface method */
 141 #define OBSOLETE_MODIFIER_WARNING(cl, flags, modifier, format, arg)          \
 142   {                                                                          \
 143     if (flag_redundant && (cl) && ((flags) & (modifier)))                    \
 144       parse_warning_context (cl,                                             \
 145                              "Discouraged redundant use of `%s' modifier "   \
 146                              "in declaration of " format,                    \
 147                              java_accstring_lookup (modifier), arg);         \
 148   }
 149
 150 /* Quickly build a temporary pointer on hypothetical type NAME. */
 151 #define BUILD_PTR_FROM_NAME(ptr, name)          \
 152   {                                             \
 153     ptr = build (POINTER_TYPE, NULL_TREE);      \
 154     TYPE_NAME (ptr) = name;                     \
 155   }
 156
 157 #define INCOMPLETE_TYPE_P(NODE)                         \
 158   ((TREE_CODE (NODE) == POINTER_TYPE)                   \
 159    && !TREE_TYPE (NODE)                                 \
 160    && TREE_CODE (TYPE_NAME (NODE)) == IDENTIFIER_NODE)
 161
 162 /* Set the EMIT_LINE_NOTE flag of a EXPR_WLF to 1 if debug information
 163    are requested. Works in the context of a parser rule. */
 164 #define JAVA_MAYBE_GENERATE_DEBUG_INFO(node)            \
 165   (debug_info_level != DINFO_LEVEL_NONE ?               \
 166     EXPR_WFL_EMIT_LINE_NOTE (node) = 1, node : node)
 167
 168 /* Types classification, according to the JLS, section 4.2 */
 169 #define JFLOAT_TYPE_P(TYPE)      (TYPE && TREE_CODE ((TYPE)) == REAL_TYPE)
 170 #define JINTEGRAL_TYPE_P(TYPE)   ((TYPE)                                   \
 171                                   && (TREE_CODE ((TYPE)) == INTEGER_TYPE   \
 172                                       || TREE_CODE ((TYPE)) == CHAR_TYPE))
 173 #define JNUMERIC_TYPE_P(TYPE)    ((TYPE)                                \
 174                                   && (JFLOAT_TYPE_P ((TYPE))            \
 175                                       || JINTEGRAL_TYPE_P ((TYPE))))
 176 #define JPRIMITIVE_TYPE_P(TYPE)  ((TYPE)                                  \
 177                                   && (JNUMERIC_TYPE_P ((TYPE))            \
 178                                   || TREE_CODE ((TYPE)) == BOOLEAN_TYPE))
 179
 180 #define JBSC_TYPE_P(TYPE) ((TYPE) && (((TYPE) == byte_type_node)        \
 181                                       || ((TYPE) == short_type_node)    \
 182                                       || ((TYPE) == char_type_node)))
 183
 184 /* Not defined in the LRM */
 185 #define JSTRING_TYPE_P(TYPE) ((TYPE)                                       \
 186                               && ((TYPE) == string_type_node ||            \
 187                                   (TREE_CODE (TYPE) == POINTER_TYPE &&     \
 188                                    TREE_TYPE (TYPE) == string_type_node)))
 189 #define JSTRING_P(NODE) ((NODE)                                         \
 190                          && (TREE_CODE (NODE) == STRING_CST             \
 191                              || IS_CRAFTED_STRING_BUFFER_P (NODE)       \
 192                              || JSTRING_TYPE_P (TREE_TYPE (NODE))))
 193
 194 #define JREFERENCE_TYPE_P(TYPE) ((TYPE)                                       \
 195                                  && (TREE_CODE (TYPE) == RECORD_TYPE          \
 196                                      || (TREE_CODE (TYPE) == POINTER_TYPE     \
 197                                          &&  TREE_CODE (TREE_TYPE (TYPE)) ==  \
 198                                          RECORD_TYPE)))
 199 #define JNULLP_TYPE_P(TYPE) ((TYPE) && (TREE_CODE (TYPE) == POINTER_TYPE) \
 200                              && (TYPE) == TREE_TYPE (null_pointer_node))
 201
 202 /* Other predicate */
 203 #define JDECL_P(NODE) (NODE && (TREE_CODE (NODE) == PARM_DECL           \
 204                                 || TREE_CODE (NODE) == VAR_DECL         \
 205                                 || TREE_CODE (NODE) == FIELD_DECL))
 206
 207 #define TYPE_INTERFACE_P(TYPE)                                  \
 208   (CLASS_P (TYPE) && CLASS_INTERFACE (TYPE_NAME (TYPE)))
 209
 210 #define TYPE_CLASS_P(TYPE) (CLASS_P (TYPE)                              \
 211                             && !CLASS_INTERFACE (TYPE_NAME (TYPE)))
 212
 213 /* Standard error messages */
 214 #define ERROR_CANT_CONVERT_TO_BOOLEAN(OPERATOR, NODE, TYPE)             \
 215   parse_error_context                                                   \
 216     ((OPERATOR), "Incompatible type for `%s'. Can't convert `%s' to "   \
 217      "boolean", operator_string ((NODE)), lang_printable_name ((TYPE),0))
 218
 219 #define ERROR_CANT_CONVERT_TO_NUMERIC(OPERATOR, NODE, TYPE)             \
 220   parse_error_context                                                   \
 221     ((OPERATOR), "Incompatible type for `%s'. Can't convert `%s' to "   \
 222      "numeric type", operator_string ((NODE)), lang_printable_name ((TYPE), 0))
 223
 224 #define ERROR_CAST_NEEDED_TO_INTEGRAL(OPERATOR, NODE, TYPE)             \
 225 do {                                                                    \
 226   tree _operator = (OPERATOR), _node = (NODE), _type = (TYPE);          \
 227   if (JPRIMITIVE_TYPE_P (_type))                                        \
 228     parse_error_context (_operator, "Incompatible type for `%s'. Explicit" \
 229                          " cast needed to convert `%s' to integral",    \
 230                          operator_string(_node),                        \
 231                          lang_printable_name (_type, 0));               \
 232   else                                                                  \
 233     parse_error_context (_operator, "Incompatible type for `%s'. Can't" \
 234                          " convert `%s' to integral",                   \
 235                          operator_string(_node),                        \
 236                          lang_printable_name (_type, 0));               \
 237 } while (0)
 238
 239 #define ERROR_VARIABLE_NOT_INITIALIZED(WFL, V)                  \
 240   parse_error_context                                           \
 241     ((WFL), "Variable `%s' may not have been initialized",      \
 242      IDENTIFIER_POINTER (V))
 243
 244 /* Definition for loop handling. This is Java's own definition of a
 245    loop body. See parse.y for documentation. It's valid once you hold
 246    a loop's body (LOOP_EXPR_BODY) */
 247
 248 /* The loop main block is the one hold the condition and the loop body */
 249 #define LOOP_EXPR_BODY_MAIN_BLOCK(NODE) TREE_OPERAND (NODE, 0)
 250 /* And then there is the loop update block */
 251 #define LOOP_EXPR_BODY_UPDATE_BLOCK(NODE) TREE_OPERAND (NODE, 1)
 252
 253 /* Inside the loop main block, there is the loop condition and the
 254    loop body. They may be reversed if the loop being described is a
 255    do-while loop. NOTE: if you use a WFL around the EXIT_EXPR so you
 256    can issue debug info for it, the EXIT_EXPR will be one operand
 257    further. */
 258 #define LOOP_EXPR_BODY_CONDITION_EXPR(NODE, R)                  \
 259   TREE_OPERAND (LOOP_EXPR_BODY_MAIN_BLOCK (NODE), (R ? 1 : 0))
 260
 261 /* Here is the labeled block the loop real body is encapsulated in */
 262 #define LOOP_EXPR_BODY_LABELED_BODY(NODE, R)                    \
 263   TREE_OPERAND (LOOP_EXPR_BODY_MAIN_BLOCK (NODE), (R ? 0 : 1))
 264 /* And here is the loop's real body */
 265 #define LOOP_EXPR_BODY_BODY_EXPR(NODE, R)                       \
 266   LABELED_BLOCK_BODY (LOOP_EXPR_BODY_LABELED_BODY(NODE, R))
 267
 268 #define PUSH_LABELED_BLOCK(B)                           \
 269   {                                                     \
 270     TREE_CHAIN (B) = ctxp->current_labeled_block;       \
 271     ctxp->current_labeled_block = (B);                  \
 272   }
 273 #define POP_LABELED_BLOCK()                                             \
 274   ctxp->current_labeled_block = TREE_CHAIN (ctxp->current_labeled_block)
 275
 276 #define PUSH_LOOP(L)                            \
 277   {                                             \
 278     TREE_CHAIN (L) = ctxp->current_loop;        \
 279     ctxp->current_loop = (L);                   \
 280   }
 281 #define POP_LOOP() ctxp->current_loop = TREE_CHAIN (ctxp->current_loop)
 282
 283 #define PUSH_EXCEPTIONS(E)                                      \
 284   currently_caught_type_list =                                  \
 285     tree_cons (NULL_TREE, (E), currently_caught_type_list);
 286
 287 #define POP_EXCEPTIONS()                                                \
 288   currently_caught_type_list = TREE_CHAIN (currently_caught_type_list)
 289
 290 /* Check that we're inside a try block.  */
 291 #define IN_TRY_BLOCK_P()                                \
 292   (currently_caught_type_list                           \
 293    && ((TREE_VALUE (currently_caught_type_list) !=      \
 294         DECL_FUNCTION_THROWS (current_function_decl))   \
 295        || TREE_CHAIN (currently_caught_type_list)))
 296
 297 /* Check that we have exceptions in E.  */
 298 #define EXCEPTIONS_P(E) ((E) ? TREE_VALUE (E) : NULL_TREE)
 299
 300 /* Invocation modes, as returned by invocation_mode (). */
 301 enum {
 302   INVOKE_STATIC,
 303   INVOKE_NONVIRTUAL,
 304   INVOKE_SUPER,
 305   INVOKE_INTERFACE,
 306   INVOKE_VIRTUAL
 307 };
 308
 309 /* We need the resolution stuff only if we compile jc1 */
 310 #ifndef JC1_LITE
 311
 312 /* Unresolved type identifiers handling. When we process the source
 313    code, we blindly accept an unknown type identifier and try to
 314    resolve it later. When an unknown type identifier is encountered
 315    and used, we record in a struct jdep element what the incomplete
 316    type is and what it should patch. Later, java_complete_class will
 317    process all classes known to have unresolved type
 318    dependencies. Within each of these classes, this routine will
 319    process unresolved type dependencies (JDEP_TO_RESOLVE), patch what
 320    needs to be patched in the dependent tree node (JDEP_GET_PATCH,
 321    JDEP_APPLY_PATCH) and perform other actions dictated by the context
 322    of the patch (JDEP_KIND). The ideas are: we patch only what needs
 323    to be patched, and with java_complete_class called at the right
 324    time, we will start processing incomplete function bodies tree
 325    nodes with everything external to function's bodies already
 326    completed, it makes things much simpler. */
 327
 328 enum jdep_code {
 329   JDEP_NO_PATCH,                /* Must be first */
 330   JDEP_SUPER,                   /* Patch the type of one type
 331                                    supertype. Requires some check
 332                                    before it's done */
 333   JDEP_FIELD,                   /* Patch the type of a class field */
 334
 335   /* JDEP_{METHOD,METHOD_RETURN,METHOD_END} to be kept in order */
 336   JDEP_METHOD,                  /* Mark the beginning of the patching
 337                                    of a method declaration, including
 338                                    it's arguments */
 339   JDEP_METHOD_RETURN,           /* Mark the beginning of the patching
 340                                    of a method declaration. Arguments
 341                                    aren't patched, only the returned
 342                                    type is */
 343   JDEP_METHOD_END,              /* Mark the end of the patching of a
 344                                    method declaration. It indicates
 345                                    that it's time to compute and
 346                                    install a new signature */
 347
 348   JDEP_INTERFACE,               /* Patch the type of a Class/interface
 349                                    extension */
 350   JDEP_VARIABLE,                /* Patch the type of a variable declaration */
 351   JDEP_PARM,                    /* Patch the type of a parm declaration */
 352   JDEP_TYPE,                    /* Patch a random tree node type,
 353                                    without the need for any specific
 354                                    actions */
 355   JDEP_EXCEPTION                /* Patch exceptions specified by `throws' */
 356 };
 357
 358 typedef struct _jdep {
 359 #ifdef ONLY_INT_FIELDS
 360   int  kind : 8;                /* Type of patch */
 361 #else
 362   enum jdep_code kind : 8;
 363 #endif
 364
 365   int  flag0 : 1;               /* Some flags */
 366   tree decl;                    /* Tied decl/or WFL */
 367   tree solv;                    /* What to solve */
 368   tree wfl;                     /* Where thing to resolve where found */
 369   tree misc;                    /* Miscellaneous info (optional). */
 370   tree *patch;                  /* Address of a location to patch */
 371   struct _jdep *next;           /* Linked list */
 372 } jdep;
 373
 374
 375 #define JDEP_DECL(J)          ((J)->decl)
 376 #define JDEP_DECL_WFL(J)      ((J)->decl)
 377 #define JDEP_KIND(J)          ((J)->kind)
 378 #define JDEP_SOLV(J)          ((J)->solv)
 379 #define JDEP_WFL(J)           ((J)->wfl)
 380 #define JDEP_MISC(J)          ((J)->misc)
 381 #define JDEP_CLASS(J)         ((J)->class)
 382 #define JDEP_APPLY_PATCH(J,P) (*(J)->patch = (P))
 383 #define JDEP_GET_PATCH(J)     ((J)->patch)
 384 #define JDEP_CHAIN(J)         ((J)->next)
 385 #define JDEP_TO_RESOLVE(J)    ((J)->solv)
 386 #define JDEP_RESOLVED_DECL(J) ((J)->solv)
 387 #define JDEP_RESOLVED(J, D)   ((J)->solv = D)
 388 #define JDEP_RESOLVED_P(J)    \
 389         (!(J)->solv || TREE_CODE ((J)->solv) != POINTER_TYPE)
 390
 391 typedef struct _jdeplist {
 392   jdep *first;
 393   jdep *last;
 394   struct _jdeplist *next;
 395 } jdeplist;
 396
 397 #endif /* JC1_LITE */
 398
 399 #define CLASSD_FIRST(CD) ((CD)->first)
 400 #define CLASSD_LAST(CD)  ((CD)->last)
 401 #define CLASSD_CHAIN(CD) ((CD)->next)
 402
 403 #define JDEP_INSERT(L,J)                        \
 404   {                                             \
 405     if (!(L)->first)                            \
 406       (L)->last = (L)->first = (J);             \
 407     else                                        \
 408       {                                         \
 409         JDEP_CHAIN ((L)->last) = (J);           \
 410         (L)->last = (J);                        \
 411       }                                         \
 412   }
 413
 414 /* if TYPE can't be resolved, obtain something suitable for its
 415    resolution (TYPE is saved in SAVE before being changed). and set
 416    CHAIN to 1. Otherwise, type is set to something usable. CHAIN is
 417    usually used to determine that a new DEP must be installed on TYPE.
 418    Note that when compiling java.lang.Object, references to Object are
 419    java.lang.Object.  */
 420 #define SET_TYPE_FOR_RESOLUTION(TYPE, SAVE, CHAIN)                      \
 421   {                                                                     \
 422     tree returned_type;                                                 \
 423     (CHAIN) = 0;                                                        \
 424     if (TREE_TYPE (ctxp->current_parsed_class) == object_type_node      \
 425         && TREE_CODE (TYPE) == EXPR_WITH_FILE_LOCATION                  \
 426         && EXPR_WFL_NODE (TYPE) == unqualified_object_id_node)          \
 427       (TYPE) = object_type_node;                                        \
 428     else                                                                \
 429       {                                                                 \
 430         if (unresolved_type_p (type, &returned_type))                   \
 431           {                                                             \
 432             if (returned_type)                                          \
 433               (TYPE) = returned_type;                                   \
 434             else                                                        \
 435               {                                                         \
 436                 (SAVE) = (TYPE);                                        \
 437                 (TYPE) = obtain_incomplete_type (TYPE);                 \
 438                 CHAIN = 1;                                              \
 439               }                                                         \
 440           }                                                             \
 441       }                                                                 \
 442   }
 443 /* Promote a type if it won't be registered as a patch */
 444 #define PROMOTE_RECORD_IF_COMPLETE(TYPE, IS_INCOMPLETE)         \
 445   {                                                             \
 446     if (!(IS_INCOMPLETE) && TREE_CODE (TYPE) == RECORD_TYPE)    \
 447       (TYPE) = promote_type (TYPE);                             \
 448   }
 449
 450 /* Insert a DECL in the current block */
 451 #define BLOCK_CHAIN_DECL(NODE)                                              \
 452   {                                                                         \
 453     TREE_CHAIN ((NODE)) =                                                   \
 454       BLOCK_EXPR_DECLS (GET_CURRENT_BLOCK (current_function_decl));         \
 455     BLOCK_EXPR_DECLS (GET_CURRENT_BLOCK (current_function_decl)) = (NODE);  \
 456   }
 457
 458 /* Return the current block, either found in the body of the currently
 459    declared function or in the current static block being defined. */
 460 #define GET_CURRENT_BLOCK(F) ((F) ? DECL_FUNCTION_BODY ((F)) :  \
 461                              current_static_block)
 462
 463 /* For an artificial BLOCK (created to house a local variable declaration not
 464    at the start of an existing block), the parent block;  otherwise NULL. */
 465 #define BLOCK_EXPR_ORIGIN(NODE) BLOCK_ABSTRACT_ORIGIN(NODE)
 466
 467 /* Merge an other line to the source line number of a decl. Used to
 468    remember function's end. */
 469 #define DECL_SOURCE_LINE_MERGE(DECL,NO) DECL_SOURCE_LINE(DECL) |= (NO << 16)
 470
 471 /* Retrieve those two info separately. */
 472 #define DECL_SOURCE_LINE_FIRST(DECL)    (DECL_SOURCE_LINE(DECL) & 0x0000ffff)
 473 #define DECL_SOURCE_LINE_LAST(DECL)     (DECL_SOURCE_LINE(DECL) >> 16)
 474
 475 /* Retrieve line/column from a WFL. */
 476 #define EXPR_WFL_GET_LINECOL(V,LINE,COL)        \
 477   {                                             \
 478      (LINE) = (V) >> 12;                        \
 479      (COL) = (V) & 0xfff;                       \
 480    }
 481 /* Add X to the column number information */
 482 #define EXPR_WFL_ADD_COL(V, X)                                  \
 483   (V) = (((V) & 0xfffff000) | ((((V) & 0xfff) + (X)) & 0xfff))
 484
 485 /* Build a WFL for expression nodes */
 486 #define BUILD_EXPR_WFL(NODE, WFL)                                       \
 487   build_expr_wfl ((NODE), input_filename, EXPR_WFL_LINENO ((WFL)),      \
 488                   EXPR_WFL_COLNO ((WFL)))
 489
 490 #define EXPR_WFL_QUALIFICATION(WFL) TREE_OPERAND ((WFL), 1)
 491 #define QUAL_WFL(NODE) TREE_PURPOSE (NODE)
 492 #define QUAL_RESOLUTION(NODE) TREE_VALUE (NODE)
 493 #define QUAL_DECL_TYPE(NODE) GET_SKIP_TYPE (NODE)
 494
 495 #define GET_SKIP_TYPE(NODE)                             \
 496   (TREE_CODE (TREE_TYPE (NODE)) == POINTER_TYPE ?       \
 497    TREE_TYPE (TREE_TYPE (NODE)): TREE_TYPE (NODE))
 498
 499 /* Handy macros for the walk operation */
 500 #define COMPLETE_CHECK_OP(NODE, N)                      \
 501 {                                                       \
 502   TREE_OPERAND ((NODE), (N)) =                          \
 503     java_complete_tree (TREE_OPERAND ((NODE), (N)));    \
 504   if (TREE_OPERAND ((NODE), (N)) == error_mark_node)    \
 505     return error_mark_node;                             \
 506 }
 507 #define COMPLETE_CHECK_OP_0(NODE) COMPLETE_CHECK_OP(NODE, 0)
 508 #define COMPLETE_CHECK_OP_1(NODE) COMPLETE_CHECK_OP(NODE, 1)
 509 #define COMPLETE_CHECK_OP_2(NODE) COMPLETE_CHECK_OP(NODE, 2)
 510
 511 /* Building invocations: append(ARG) and StringBuffer(ARG) */
 512 #define BUILD_APPEND(ARG)                                                     \
 513   ((JSTRING_TYPE_P (TREE_TYPE (ARG)) || JPRIMITIVE_TYPE_P (TREE_TYPE (ARG)))  \
 514    ? build_method_invocation (wfl_append,                                     \
 515                               ARG ? build_tree_list (NULL, (ARG)) : NULL_TREE)\
 516    : build_method_invocation (wfl_append,                                     \
 517                               ARG ? build_tree_list (NULL,                    \
 518                                                      build1 (CONVERT_EXPR,    \
 519                                                              object_type_node,\
 520                                                              (ARG)))          \
 521                               : NULL_TREE))
 522 #define BUILD_STRING_BUFFER(ARG)                                              \
 523   build_new_invocation (wfl_string_buffer,                                    \
 524                         (ARG ? build_tree_list (NULL, (ARG)) : NULL_TREE))
 525
 526 /* For exception handling, build diverse function calls */
 527 #define BUILD_ASSIGN_EXCEPTION_INFO(WHERE, TO)          \
 528   {                                                     \
 529     (WHERE) = build (MODIFY_EXPR, void_type_node, (TO), \
 530                      soft_exceptioninfo_call_node);     \
 531     TREE_SIDE_EFFECTS (WHERE) = 1;                      \
 532   }
 533
 534 #define BUILD_THROW(WHERE, WHAT)                                        \
 535   {                                                                     \
 536     (WHERE) = build (CALL_EXPR, void_type_node,                         \
 537                   build_address_of (throw_node),                        \
 538                   build_tree_list (NULL_TREE, (WHAT)), NULL_TREE);      \
 539     TREE_SIDE_EFFECTS ((WHERE)) = 1;                                    \
 540   }
 541
 542 /* Set wfl_operator for the most accurate error location */
 543 #define SET_WFL_OPERATOR(WHICH, NODE, WFL)              \
 544   EXPR_WFL_LINECOL (WHICH) =                            \
 545     (TREE_CODE (WFL) == EXPR_WITH_FILE_LOCATION ?       \
 546      EXPR_WFL_LINECOL (WFL) : EXPR_WFL_LINECOL (NODE))
 547
 548 #define PATCH_METHOD_RETURN_ERROR()             \
 549   {                                             \
 550     if (ret_decl)                               \
 551       *ret_decl = NULL_TREE;                    \
 552     return error_mark_node;                     \
 553   }
 554
 555 /* Convenient macro to check. Assumes that CLASS is a CLASS_DECL.  */
 556 #define CHECK_METHODS(CLASS)                    \
 557   {                                             \
 558     if (CLASS_INTERFACE ((CLASS)))              \
 559       java_check_abstract_methods ((CLASS));    \
 560     else                                        \
 561       java_check_regular_methods ((CLASS));     \
 562   }
 563
 564 /* Using and reseting the @deprecated tag flag */
 565 #define CHECK_DEPRECATED(DECL)                  \
 566   {                                             \
 567     if (ctxp->deprecated)                       \
 568       DECL_DEPRECATED (DECL) = 1;               \
 569     ctxp->deprecated = 0;                       \
 570   }
 571
 572 /* Register an import */
 573 #define REGISTER_IMPORT(WHOLE, NAME)                    \
 574 {                                                       \
 575   IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P ((NAME)) = 1;     \
 576   node = build_tree_list ((WHOLE), (NAME));             \
 577   TREE_CHAIN (node) = ctxp->import_list;                \
 578   ctxp->import_list = node;                             \
 579 }
 580
 581 /* Safe check that DECL is <clinit> */
 582 #define IS_CLINIT(DECL)                         \
 583   (DECL != NULL_TREE && DECL_NAME (DECL) == clinit_identifier_node)
 584
 585 /* Macro to access the osb (opening square bracket) count */
 586 #define CURRENT_OSB(C) (C)->osb_number [(C)->osb_depth]
 587
 588 /* Macro for the xreferencer */
 589 #define DECL_END_SOURCE_LINE(DECL)       DECL_FRAME_SIZE (DECL)
 590 #define DECL_INHERITED_SOURCE_LINE(DECL) DECL_FIELD_SIZE (DECL)
 591
 592 /* Parser context data structure. */
 593 struct parser_ctxt {
 594
 595   char *filename;                   /* Current filename */
 596   FILE *finput;                     /* Current file input stream */
 597   struct parser_ctxt *next;
 598
 599   struct java_line *p_line, *c_line; /* Previous and current line */
 600   java_lc elc;                       /* Error's line column info */
 601   unicode_t unget_utf8_value;        /* An unget utf8 value */
 602   int ccb_indent;                    /* Keep track of {} indent, lexer */
 603   int first_ccb_indent1;             /* First { at ident level 1 */
 604   int last_ccb_indent1;              /* Last } at ident level 1 */
 605   int parser_ccb_indent;             /* Keep track of {} indent, parser */
 606   int osb_depth;                     /* Current depth of [ in an expression */
 607   int osb_limit;                     /* Limit of this depth */
 608   int *osb_number;                   /* Keep track of ['s */
 609   int minus_seen;                    /* Integral literal overflow */
 610   int lineno;                        /* Current lineno */
 611   int java_error_flag;               /* Report error when true */
 612   int deprecated;                    /* @deprecated tag seen */
 613
 614   /* This section is defined only if we compile jc1 */
 615 #ifndef JC1_LITE
 616   tree modifier_ctx [11];           /* WFL of modifiers */
 617   tree current_class;               /* Current class */
 618   tree current_function_decl;       /* Current function decl, save/restore */
 619
 620   struct JCF *current_jcf;          /* CU jcf */
 621
 622   int prevent_ese;                  /* Prevent expression statement error */
 623   int class_err;                    /* Flag to report certain errors */
 624
 625   int formal_parameter_number;      /* Number of parameters found */
 626   int interface_number;             /* # itfs declared to extend an itf def */
 627
 628   tree package;                     /* Defined package ID */
 629
 630   /* Those tow list are saved accross file traversal */
 631   tree  incomplete_class;           /* List of non-complete classes */
 632   tree  gclass_list;                /* All classes seen from source code */
 633
 634   /* These two lists won't survive file traversal */
 635   tree  class_list;                 /* List of classes in a CU */
 636   jdeplist *classd_list;            /* Classe dependencies in a CU */
 637
 638   tree  current_parsed_class;       /* Class currently parsed */
 639   tree  current_parsed_class_un;    /* Curr. parsed class unqualified name */
 640
 641   tree non_static_initialized;      /* List of non static initialized fields */
 642   tree static_initialized;          /* List of static non final initialized */
 643
 644   tree import_list;                 /* List of import */
 645   tree import_demand_list;          /* List of import on demand */
 646
 647   tree current_loop;                /* List of the currently nested
 648                                        loops/switches */
 649   tree current_labeled_block;       /* List of currently nested
 650                                        labeled blocks. */
 651
 652   int pending_block;                /* Pending block to close */
 653
 654   int explicit_constructor_p;       /* True when processing an explicit
 655                                        constructor. This flag is used to trap
 656                                        illegal argument usage during an
 657                                        explicit constructor invocation. */
 658 #endif /* JC1_LITE */
 659 };
 660
 661 #ifndef JC1_LITE
 662 void safe_layout_class PROTO ((tree));
 663 void java_complete_class PROTO ((void));
 664 void java_check_circular_reference PROTO ((void));
 665 void java_check_final PROTO ((void));
 666 void java_layout_classes PROTO ((void));
 667 tree java_method_add_stmt PROTO ((tree, tree));
 668 void java_expand_switch PROTO ((tree));
 669 int java_report_errors PROTO ((void));
 670 extern tree do_resolve_class PROTO ((tree, tree, tree));
 671 #endif
 672 char *java_get_line_col PROTO ((char *, int, int));
 673 extern void reset_report PROTO ((void));
 674
 675 /* Always in use, no matter what you compile */
 676 void java_push_parser_context PROTO ((void));
 677 void java_pop_parser_context PROTO ((int));
 678 void java_init_lex PROTO ((void));
 679 extern void java_parser_context_save_global PROTO ((void));
 680 extern void java_parser_context_restore_global PROTO ((void));
 681 int yyparse PROTO ((void));
 682 extern int java_parse PROTO ((void));
 683 void yyerror PROTO ((const char *));
 684 extern void java_expand_classes PROTO ((void));
 685 #endif