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 /* Pedantic warning on obsolete modifiers. Note: when cl is NULL,
 133    flags was set artificially, such as for a interface method */
 134 #define OBSOLETE_MODIFIER_WARNING(cl, flags, modifier, format, arg)          \
 135   {                                                                          \
 136     if (flag_redundant && (cl) && ((flags) & (modifier)))                    \
 137       parse_warning_context (cl,                                             \
 138                              "Discouraged redundant use of `%s' modifier "   \
 139                              "in declaration of " format,                    \
 140                              java_accstring_lookup (modifier), arg);         \
 141   }
 142
 143 /* Quickly build a temporary pointer on hypothetical type NAME. */
 144 #define BUILD_PTR_FROM_NAME(ptr, name)          \
 145   {                                             \
 146     ptr = build (POINTER_TYPE, NULL_TREE);      \
 147     TYPE_NAME (ptr) = name;                     \
 148   }
 149
 150 #define INCOMPLETE_TYPE_P(NODE)                         \
 151   ((TREE_CODE (NODE) == POINTER_TYPE)                   \
 152    && !TREE_TYPE (NODE)                                 \
 153    && TREE_CODE (TYPE_NAME (NODE)) == IDENTIFIER_NODE)
 154
 155 /* Set the EMIT_LINE_NOTE flag of a EXPR_WLF to 1 if debug information
 156    are requested. Works in the context of a parser rule. */
 157 #define JAVA_MAYBE_GENERATE_DEBUG_INFO(node)            \
 158   (debug_info_level != DINFO_LEVEL_NONE ?               \
 159     EXPR_WFL_EMIT_LINE_NOTE (node) = 1, node : node)
 160
 161 /* Types classification, according to the JLS, section 4.2 */
 162 #define JFLOAT_TYPE_P(TYPE)      (TYPE && TREE_CODE ((TYPE)) == REAL_TYPE)
 163 #define JINTEGRAL_TYPE_P(TYPE)   ((TYPE)                                   \
 164                                   && (TREE_CODE ((TYPE)) == INTEGER_TYPE   \
 165                                       || TREE_CODE ((TYPE)) == CHAR_TYPE))
 166 #define JNUMERIC_TYPE_P(TYPE)    ((TYPE)                                \
 167                                   && (JFLOAT_TYPE_P ((TYPE))            \
 168                                       || JINTEGRAL_TYPE_P ((TYPE))))
 169 #define JPRIMITIVE_TYPE_P(TYPE)  ((TYPE)                                  \
 170                                   && (JNUMERIC_TYPE_P ((TYPE))            \
 171                                   || TREE_CODE ((TYPE)) == BOOLEAN_TYPE))
 172
 173 #define JBSC_TYPE_P(TYPE) ((TYPE) && (((TYPE) == byte_type_node)        \
 174                                       || ((TYPE) == short_type_node)    \
 175                                       || ((TYPE) == char_type_node)))
 176
 177 /* Not defined in the LRM */
 178 #define JSTRING_TYPE_P(TYPE) ((TYPE)                                       \
 179                               && ((TYPE) == string_type_node ||            \
 180                                   (TREE_CODE (TYPE) == POINTER_TYPE &&     \
 181                                    TREE_TYPE (TYPE) == string_type_node)))
 182 #define JSTRING_P(NODE) ((NODE)                                         \
 183                          && (TREE_CODE (NODE) == STRING_CST             \
 184                              || IS_CRAFTED_STRING_BUFFER_P (NODE)       \
 185                              || JSTRING_TYPE_P (TREE_TYPE (NODE))))
 186
 187 #define JREFERENCE_TYPE_P(TYPE) ((TYPE)                                       \
 188                                  && (TREE_CODE (TYPE) == RECORD_TYPE          \
 189                                      || (TREE_CODE (TYPE) == POINTER_TYPE     \
 190                                          &&  TREE_CODE (TREE_TYPE (TYPE)) ==  \
 191                                          RECORD_TYPE)))
 192 #define JNULLP_TYPE_P(TYPE) ((TYPE) && (TREE_CODE (TYPE) == POINTER_TYPE) \
 193                              && (TYPE) == TREE_TYPE (null_pointer_node))
 194
 195 /* Other predicate */
 196 #define JDECL_P(NODE) (NODE && (TREE_CODE (NODE) == PARM_DECL           \
 197                                 || TREE_CODE (NODE) == VAR_DECL         \
 198                                 || TREE_CODE (NODE) == FIELD_DECL))
 199
 200 #define TYPE_INTERFACE_P(TYPE)                                  \
 201   (CLASS_P (TYPE) && CLASS_INTERFACE (TYPE_NAME (TYPE)))
 202
 203 #define TYPE_CLASS_P(TYPE) (CLASS_P (TYPE)                              \
 204                             && !CLASS_INTERFACE (TYPE_NAME (TYPE))      \
 205                             && !TYPE_ARRAY_P (TYPE))
 206
 207 /* Standard error messages */
 208 #define ERROR_CANT_CONVERT_TO_BOOLEAN(OPERATOR, NODE, TYPE)             \
 209   parse_error_context                                                   \
 210     ((OPERATOR), "Incompatible type for `%s'. Can't convert `%s' to "   \
 211      "boolean", operator_string ((NODE)), lang_printable_name ((TYPE),0))
 212
 213 #define ERROR_CANT_CONVERT_TO_NUMERIC(OPERATOR, NODE, TYPE)             \
 214   parse_error_context                                                   \
 215     ((OPERATOR), "Incompatible type for `%s'. Can't convert `%s' to "   \
 216      "numeric type", operator_string ((NODE)), lang_printable_name ((TYPE), 0))
 217
 218 #define ERROR_CAST_NEEDED_TO_INTEGRAL(OPERATOR, NODE, TYPE)             \
 219   parse_error_context                                                   \
 220     ((OPERATOR), (JPRIMITIVE_TYPE_P (TYPE) ?                            \
 221      "Incompatible type for `%s'. Explicit cast needed to convert "     \
 222       "`%s' to integral" : "Incompatible type for `%s'. Can't convert " \
 223       "`%s' to integral"), operator_string ((NODE)),                    \
 224       lang_printable_name ((TYPE), 0))
 225
 226 #define ERROR_VARIABLE_NOT_INITIALIZED(WFL, V)                  \
 227   parse_error_context                                           \
 228     ((WFL), "Variable `%s' may not have been initialized",      \
 229      IDENTIFIER_POINTER (V))
 230
 231 /* Definition for loop handling. This is Java's own definition of a
 232    loop body. See parse.y for documentation. It's valid once you hold
 233    a loop's body (LOOP_EXPR_BODY) */
 234
 235 /* The loop main block is the one hold the condition and the loop body */
 236 #define LOOP_EXPR_BODY_MAIN_BLOCK(NODE) TREE_OPERAND (NODE, 0)
 237 /* And then there is the loop update block */
 238 #define LOOP_EXPR_BODY_UPDATE_BLOCK(NODE) TREE_OPERAND (NODE, 1)
 239
 240 /* Inside the loop main block, there is the loop condition and the
 241    loop body. They may be reversed if the loop being described is a
 242    do-while loop. NOTE: if you use a WFL around the EXIT_EXPR so you
 243    can issue debug info for it, the EXIT_EXPR will be one operand
 244    further. */
 245 #define LOOP_EXPR_BODY_CONDITION_EXPR(NODE, R)                  \
 246   TREE_OPERAND (LOOP_EXPR_BODY_MAIN_BLOCK (NODE), (R ? 1 : 0))
 247
 248 /* Here is the labeled block the loop real body is encapsulated in */
 249 #define LOOP_EXPR_BODY_LABELED_BODY(NODE, R)                    \
 250   TREE_OPERAND (LOOP_EXPR_BODY_MAIN_BLOCK (NODE), (R ? 0 : 1))
 251 /* And here is the loop's real body */
 252 #define LOOP_EXPR_BODY_BODY_EXPR(NODE, R)                       \
 253   LABELED_BLOCK_BODY (LOOP_EXPR_BODY_LABELED_BODY(NODE, R))
 254
 255 /* Does a loop have a label ? */
 256 #define LOOP_HAS_LABEL_P(LOOP)                                  \
 257   (ctxp->current_labeled_block                                  \
 258    && LABELED_BLOCK_BODY (ctxp->current_labeled_block) == (LOOP))
 259
 260 /* Same operation than the one performed above, but considering the
 261    previous labeled block */
 262 #define LOOP_HAS_LABEL_SKIP_P(LOOP)                                          \
 263   (ctxp->current_labeled_block                                               \
 264    && TREE_CHAIN (ctxp->current_labeled_block)                               \
 265    && LABELED_BLOCK_BODY (TREE_CHAIN (ctxp->current_labeled_block)) == (LOOP))
 266
 267 #define PUSH_LABELED_BLOCK(B)                           \
 268   {                                                     \
 269     TREE_CHAIN (B) = ctxp->current_labeled_block;       \
 270     ctxp->current_labeled_block = (B);                  \
 271   }
 272 #define POP_LABELED_BLOCK()                                             \
 273   ctxp->current_labeled_block = TREE_CHAIN (ctxp->current_labeled_block)
 274
 275 #define PUSH_LOOP(L)                            \
 276   {                                             \
 277     TREE_CHAIN (L) = ctxp->current_loop;        \
 278     ctxp->current_loop = (L);                   \
 279   }
 280 #define POP_LOOP() ctxp->current_loop = TREE_CHAIN (ctxp->current_loop)
 281
 282 #define PUSH_EXCEPTIONS(E)                                      \
 283   currently_caught_type_list =                                  \
 284     tree_cons (NULL_TREE, (E), currently_caught_type_list);
 285
 286 #define POP_EXCEPTIONS()                                                \
 287   currently_caught_type_list = TREE_CHAIN (currently_caught_type_list)
 288
 289 /* Check that we're inside a try block.  */
 290 #define IN_TRY_BLOCK_P()                                \
 291   (currently_caught_type_list                           \
 292    && ((TREE_VALUE (currently_caught_type_list) !=      \
 293         DECL_FUNCTION_THROWS (current_function_decl))   \
 294        || TREE_CHAIN (currently_caught_type_list)))
 295
 296 /* Check that we have exceptions in E.  */
 297 #define EXCEPTIONS_P(E) ((E) ? TREE_VALUE (E) : NULL_TREE)
 298
 299 /* Invocation modes, as returned by invocation_mode (). */
 300 enum {
 301   INVOKE_STATIC,
 302   INVOKE_NONVIRTUAL,
 303   INVOKE_SUPER,
 304   INVOKE_INTERFACE,
 305   INVOKE_VIRTUAL,
 306 };
 307
 308 /* We need the resolution stuff only if we compile jc1 */
 309 #ifndef JC1_LITE
 310
 311 /* Unresolved type identifiers handling. When we process the source
 312    code, we blindly accept an unknown type identifier and try to
 313    resolve it later. When an unknown type identifier is encountered
 314    and used, we record in a struct jdep element what the incomplete
 315    type is and what it should patch. Later, java_complete_class will
 316    process all classes known to have unresolved type
 317    dependencies. Within each of these classes, this routine will
 318    process unresolved type dependencies (JDEP_TO_RESOLVE), patch what
 319    needs to be patched in the dependent tree node (JDEP_GET_PATCH,
 320    JDEP_APPLY_PATCH) and perform other actions dictated by the context
 321    of the patch (JDEP_KIND). The ideas are: we patch only what needs
 322    to be patched, and with java_complete_class called at the right
 323    time, we will start processing incomplete function bodies tree
 324    nodes with everything external to function's bodies already
 325    completed, it makes things much simpler. */
 326
 327 enum jdep_code {
 328   JDEP_NO_PATCH,                /* Must be first */
 329   JDEP_SUPER,                   /* Patch the type of one type
 330                                    supertype. Requires some check
 331                                    before it's done */
 332   JDEP_FIELD,                   /* Patch the type of a class field */
 333
 334   /* JDEP_{METHOD,METHOD_RETURN,METHOD_END} to be kept in order */
 335   JDEP_METHOD,                  /* Mark the beginning of the patching
 336                                    of a method declaration, including
 337                                    it's arguments */
 338   JDEP_METHOD_RETURN,           /* Mark the beginning of the patching
 339                                    of a method declaration. Arguments
 340                                    aren't patched, only the returned
 341                                    type is */
 342   JDEP_METHOD_END,              /* Mark the end of the patching of a
 343                                    method declaration. It indicates
 344                                    that it's time to compute and
 345                                    install a new signature */
 346
 347   JDEP_INTERFACE,               /* Patch the type of a Class/interface
 348                                    extension */
 349   JDEP_VARIABLE,                /* Patch the type of a variable declaration */
 350   JDEP_PARM,                    /* Patch the type of a parm declaration */
 351   JDEP_TYPE,                    /* Patch a random tree node type,
 352                                    without the need for any specific
 353                                    actions */
 354   JDEP_EXCEPTION,               /* Patch exceptions specified by `throws' */
 355 };
 356
 357 typedef struct _jdep {
 358 #ifdef ONLY_INT_FIELDS
 359   int  kind : 8;                /* Type of patch */
 360 #else
 361   enum jdep_code kind : 8;
 362 #endif
 363
 364   int  flag0 : 1;               /* Some flags */
 365   tree decl;                    /* Tied decl/or WFL */
 366   tree solv;                    /* What to solve */
 367   tree wfl;                     /* Where thing to resolve where found */
 368   tree misc;                    /* Miscellaneous info (optional). */
 369   tree *patch;                  /* Address of a location to patch */
 370   struct _jdep *next;           /* Linked list */
 371 } jdep;
 372
 373
 374 #define JDEP_DECL(J)          ((J)->decl)
 375 #define JDEP_DECL_WFL(J)      ((J)->decl)
 376 #define JDEP_KIND(J)          ((J)->kind)
 377 #define JDEP_SOLV(J)          ((J)->solv)
 378 #define JDEP_WFL(J)           ((J)->wfl)
 379 #define JDEP_MISC(J)          ((J)->misc)
 380 #define JDEP_CLASS(J)         ((J)->class)
 381 #define JDEP_APPLY_PATCH(J,P) (*(J)->patch = (P))
 382 #define JDEP_GET_PATCH(J)     ((J)->patch)
 383 #define JDEP_CHAIN(J)         ((J)->next)
 384 #define JDEP_TO_RESOLVE(J)    ((J)->solv)
 385 #define JDEP_RESOLVED_DECL(J) ((J)->solv)
 386 #define JDEP_RESOLVED(J, D)   ((J)->solv = D)
 387 #define JDEP_RESOLVED_P(J)    \
 388         (!(J)->solv || TREE_CODE ((J)->solv) != POINTER_TYPE)
 389
 390 typedef struct _jdeplist {
 391   jdep *first;
 392   jdep *last;
 393   struct _jdeplist *next;
 394 } jdeplist;
 395
 396 #endif /* JC1_LITE */
 397
 398 #define CLASSD_FIRST(CD) ((CD)->first)
 399 #define CLASSD_LAST(CD)  ((CD)->last)
 400 #define CLASSD_CHAIN(CD) ((CD)->next)
 401
 402 #define JDEP_INSERT(L,J)                        \
 403   {                                             \
 404     if (!(L)->first)                            \
 405       (L)->last = (L)->first = (J);             \
 406     else                                        \
 407       {                                         \
 408         JDEP_CHAIN ((L)->last) = (J);           \
 409         (L)->last = (J);                        \
 410       }                                         \
 411   }
 412
 413 /* if TYPE can't be resolved, obtain something suitable for its
 414    resolution (TYPE is saved in SAVE before being changed). and set
 415    CHAIN to 1. Otherwise, type is set to something usable. CHAIN is
 416    usually used to determine that a new DEP must be installed on TYPE.
 417    Note that when compiling java.lang.Object, references to Object are
 418    java.lang.Object.  */
 419 #define SET_TYPE_FOR_RESOLUTION(TYPE, SAVE, CHAIN)                      \
 420   {                                                                     \
 421     tree returned_type;                                                 \
 422     (CHAIN) = 0;                                                        \
 423     if (TREE_TYPE (ctxp->current_parsed_class) == object_type_node      \
 424         && TREE_CODE (TYPE) == EXPR_WITH_FILE_LOCATION                  \
 425         && EXPR_WFL_NODE (TYPE) == unqualified_object_id_node)          \
 426       (TYPE) = object_type_node;                                        \
 427     else                                                                \
 428       {                                                                 \
 429         if (unresolved_type_p (type, &returned_type))                   \
 430           {                                                             \
 431             if (returned_type)                                          \
 432               (TYPE) = returned_type;                                   \
 433             else                                                        \
 434               {                                                         \
 435                 (SAVE) = (TYPE);                                        \
 436                 (TYPE) = obtain_incomplete_type (TYPE);                 \
 437                 CHAIN = 1;                                              \
 438               }                                                         \
 439           }                                                             \
 440       }                                                                 \
 441   }
 442 /* Promote a type if it won't be registered as a patch */
 443 #define PROMOTE_RECORD_IF_COMPLETE(TYPE, IS_INCOMPLETE)         \
 444   {                                                             \
 445     if (!(IS_INCOMPLETE) && TREE_CODE (TYPE) == RECORD_TYPE)    \
 446       (TYPE) = promote_type (TYPE);                             \
 447   }
 448
 449 /* Insert a DECL in the current block */
 450 #define BLOCK_CHAIN_DECL(NODE)                                              \
 451   {                                                                         \
 452     TREE_CHAIN ((NODE)) =                                                   \
 453       BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl));        \
 454     BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl)) = (NODE); \
 455   }
 456
 457 /* For an artificial BLOCK (created to house a local variable declaration not
 458    at the start of an existing block), the parent block;  otherwise NULL. */
 459 #define BLOCK_EXPR_ORIGIN(NODE) BLOCK_ABSTRACT_ORIGIN(NODE)
 460
 461 /* Merge an other line to the source line number of a decl. Used to
 462    remember function's end. */
 463 #define DECL_SOURCE_LINE_MERGE(DECL,NO) DECL_SOURCE_LINE(DECL) |= (NO << 16)
 464
 465 /* Retrieve those two info separately. */
 466 #define DECL_SOURCE_LINE_FIRST(DECL)    (DECL_SOURCE_LINE(DECL) & 0x0000ffff)
 467 #define DECL_SOURCE_LINE_LAST(DECL)     (DECL_SOURCE_LINE(DECL) >> 16)
 468
 469 /* Build a WFL for expression nodes */
 470 #define BUILD_EXPR_WFL(NODE, WFL)                                       \
 471   build_expr_wfl ((NODE), input_filename, EXPR_WFL_LINENO ((WFL)),      \
 472                   EXPR_WFL_COLNO ((WFL)))
 473
 474 #define EXPR_WFL_QUALIFICATION(WFL) TREE_OPERAND ((WFL), 1)
 475 #define QUAL_WFL(NODE) TREE_PURPOSE (NODE)
 476 #define QUAL_RESOLUTION(NODE) TREE_VALUE (NODE)
 477 #define QUAL_DECL_TYPE(NODE) GET_SKIP_TYPE (NODE)
 478
 479 #define GET_SKIP_TYPE(NODE)                             \
 480   (TREE_CODE (TREE_TYPE (NODE)) == POINTER_TYPE ?       \
 481    TREE_TYPE (TREE_TYPE (NODE)): TREE_TYPE (NODE))
 482
 483 /* Handy macros for the walk operation */
 484 #define COMPLETE_CHECK_OP(NODE, N)                      \
 485 {                                                       \
 486   TREE_OPERAND ((NODE), (N)) =                          \
 487     java_complete_tree (TREE_OPERAND ((NODE), (N)));    \
 488   if (TREE_OPERAND ((NODE), (N)) == error_mark_node)    \
 489     return error_mark_node;                             \
 490 }
 491 #define COMPLETE_CHECK_OP_0(NODE) COMPLETE_CHECK_OP(NODE, 0)
 492 #define COMPLETE_CHECK_OP_1(NODE) COMPLETE_CHECK_OP(NODE, 1)
 493 #define COMPLETE_CHECK_OP_2(NODE) COMPLETE_CHECK_OP(NODE, 2)
 494
 495 /* Building invocations: append(ARG) and StringBuffer(ARG) */
 496 #define BUILD_APPEND(ARG)                                                     \
 497   ((JSTRING_TYPE_P (TREE_TYPE (ARG)) || JPRIMITIVE_TYPE_P (TREE_TYPE (ARG)))  \
 498    ? build_method_invocation (wfl_append,                                     \
 499                               ARG ? build_tree_list (NULL, (ARG)) : NULL_TREE)\
 500    : build_method_invocation (wfl_append,                                     \
 501                               ARG ? build_tree_list (NULL,                    \
 502                                                      build1 (CONVERT_EXPR,    \
 503                                                              object_type_node,\
 504                                                              (ARG)))          \
 505                               : NULL_TREE))
 506 #define BUILD_STRING_BUFFER(ARG)                                              \
 507   build_new_invocation (wfl_string_buffer,                                    \
 508                         (ARG ? build_tree_list (NULL, (ARG)) : NULL_TREE))
 509
 510 /* For exception handling, build diverse function calls */
 511 #define BUILD_ASSIGN_EXCEPTION_INFO(WHERE, TO)          \
 512   {                                                     \
 513     (WHERE) = build (MODIFY_EXPR, void_type_node, (TO), \
 514                      soft_exceptioninfo_call_node);     \
 515     TREE_SIDE_EFFECTS (WHERE) = 1;                      \
 516   }
 517
 518 #define BUILD_THROW(WHERE, WHAT)                                        \
 519   {                                                                     \
 520     (WHERE) = build (CALL_EXPR, void_type_node,                         \
 521                   build_address_of (throw_node),                        \
 522                   build_tree_list (NULL_TREE, (WHAT)), NULL_TREE);      \
 523     TREE_SIDE_EFFECTS ((WHERE)) = 1;                                    \
 524   }
 525
 526 /* Set wfl_operator for the most accurate error location */
 527 #define SET_WFL_OPERATOR(WHICH, NODE, WFL)              \
 528   EXPR_WFL_LINECOL (WHICH) =                            \
 529     (TREE_CODE (WFL) == EXPR_WITH_FILE_LOCATION ?       \
 530      EXPR_WFL_LINECOL (WFL) : EXPR_WFL_LINECOL (NODE))
 531
 532 #define PATCH_METHOD_RETURN_ERROR()             \
 533   {                                             \
 534     if (ret_decl)                               \
 535       *ret_decl = NULL_TREE;                    \
 536     return error_mark_node;                     \
 537   }
 538
 539 /* Convenient macro to check. Assumes that CLASS is a CLASS_DECL.  */
 540 #define CHECK_METHODS(CLASS)                    \
 541   {                                             \
 542     if (CLASS_INTERFACE ((CLASS)))              \
 543       java_check_abstract_methods ((CLASS));    \
 544     else                                        \
 545       java_check_regular_methods ((CLASS));     \
 546   }
 547
 548 /* Using and reseting the @deprecated tag flag */
 549 #define CHECK_DEPRECATED(DECL)                  \
 550   {                                             \
 551     if (ctxp->deprecated)                       \
 552       DECL_DEPRECATED (DECL) = 1;               \
 553     ctxp->deprecated = 0;                       \
 554   }
 555
 556 /* Register an import */
 557 #define REGISTER_IMPORT(WHOLE, NAME)                    \
 558 {                                                       \
 559   IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P ((NAME)) = 1;     \
 560   node = build_tree_list ((WHOLE), (NAME));             \
 561   TREE_CHAIN (node) = ctxp->import_list;                \
 562   ctxp->import_list = node;                             \
 563 }
 564
 565 /* Macro to access the osb (opening square bracket) count */
 566 #define CURRENT_OSB(C) (C)->osb_number [(C)->osb_depth]
 567
 568 /* Parser context data structure. */
 569 struct parser_ctxt {
 570
 571   char *filename;                   /* Current filename */
 572   FILE *finput;                     /* Current file input stream */
 573   struct parser_ctxt *next;
 574
 575   struct java_line *p_line, *c_line; /* Previous and current line */
 576   java_lc elc;                       /* Error's line column info */
 577   unicode_t unget_utf8_value;        /* An unget utf8 value */
 578   int ccb_indent;                    /* Keep track of {} indent, lexer */
 579   int first_ccb_indent1;             /* First { at ident level 1 */
 580   int last_ccb_indent1;              /* Last } at ident level 1 */
 581   int parser_ccb_indent;             /* Keep track of {} indent, parser */
 582   int osb_depth;                     /* Current depth of [ in an expression */
 583   int osb_limit;                     /* Limit of this depth */
 584   int *osb_number;                   /* Keep track of ['s */
 585   int minus_seen;                    /* Integral literal overflow */
 586   int lineno;                        /* Current lineno */
 587   int java_error_flag;               /* Report error when true */
 588   int deprecated;                    /* @deprecated tag seen */
 589
 590   /* This section is defined only if we compile jc1 */
 591 #ifndef JC1_LITE
 592   tree modifier_ctx [11];           /* WFL of modifiers */
 593   tree current_class;               /* Current class */
 594   tree current_function_decl;       /* Current function decl, save/restore */
 595
 596   struct JCF *current_jcf;          /* CU jcf */
 597
 598   int prevent_ese;                  /* Prevent expression statement error */
 599   int class_err;                    /* Flag to report certain errors */
 600
 601   int formal_parameter_number;      /* Number of parameters found */
 602   int interface_number;             /* # itfs declared to extend an itf def */
 603
 604   tree package;                     /* Defined package ID */
 605
 606   /* Those tow list are saved accross file traversal */
 607   tree  incomplete_class;           /* List of non-complete classes */
 608   tree  gclass_list;                /* All classes seen from source code */
 609
 610   /* These two lists won't survive file traversal */
 611   tree  class_list;                 /* List of classes in a CU */
 612   jdeplist *classd_list;            /* Classe dependencies in a CU */
 613
 614   tree  current_parsed_class;       /* Class currently parsed */
 615   tree  current_parsed_class_un;    /* Curr. parsed class unqualified name */
 616
 617   tree non_static_initialized;      /* List of non static initialized fields */
 618   tree static_initialized;          /* List of static non final initialized */
 619
 620   tree import_list;                 /* List of import */
 621   tree import_demand_list;          /* List of import on demand */
 622
 623   tree current_loop;                /* List of the currently nested
 624                                        loops/switches */
 625   tree current_labeled_block;       /* List of currently nested
 626                                        labeled blocks. */
 627
 628   int pending_block;                /* Pending block to close */
 629
 630   int explicit_constructor_p;       /* True when processing an explicit
 631                                        constructor. This flag is used to trap
 632                                        illegal argument usage during an
 633                                        explicit constructor invocation. */
 634 #endif /* JC1_LITE */
 635 };
 636
 637 #ifndef JC1_LITE
 638 void safe_layout_class PROTO ((tree));
 639 void java_complete_class PROTO ((void));
 640 void java_check_circular_reference PROTO ((void));
 641 void java_check_final PROTO ((void));
 642 void java_layout_classes PROTO ((void));
 643 tree java_method_add_stmt PROTO ((tree, tree));
 644 char *java_get_line_col PROTO ((char *, int, int));
 645 void java_expand_switch PROTO ((tree));
 646 int java_report_errors PROTO (());
 647 extern tree do_resolve_class PROTO ((tree, tree, tree));
 648 #endif
 649
 650 /* Always in use, no matter what you compile */
 651 void java_push_parser_context PROTO ((void));
 652 void java_pop_parser_context PROTO ((int));
 653 void java_init_lex PROTO ((void));
 654 extern void java_parser_context_save_global PROTO ((void));
 655 extern void java_parser_context_restore_global PROTO ((void));
 656 int yyparse PROTO ((void));
 657 extern int java_parse PROTO ((void));
 658 int yylex ();
 659 void yyerror PROTO ((char *));
 660 extern void java_expand_classes PROTO ((void));
 661 #endif