1 /* gfortran header file
2 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
4 Contributed by Andy Vaught
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 #ifndef GCC_GFORTRAN_H
23 #define GCC_GFORTRAN_H
25 /* It's probably insane to have this large of a header file, but it
26 seemed like everything had to be recompiled anyway when a change
27 was made to a header file, and there were ordering issues with
28 multiple header files. Besides, Microsoft's winnt.h was 250k last
29 time I looked, so by comparison this is perfectly reasonable. */
33 #include "coretypes.h"
35 #include "splay-tree.h"
36 /* The following ifdefs are recommended by the autoconf documentation
37 for any code using alloca. */
39 /* AIX requires this to be the first thing in the file. */
41 #else /* not __GNUC__ */
44 #else /* do not HAVE_ALLOCA_H */
48 #ifndef alloca /* predefined by HP cc +Olibcalls */
50 #endif /* not predefined */
52 #endif /* do not HAVE_ALLOCA_H */
53 #endif /* not __GNUC__ */
55 /* Major control parameters. */
57 #define GFC_MAX_SYMBOL_LEN 63 /* Must be at least 63 for F2003. */
58 #define GFC_MAX_BINDING_LABEL_LEN 126 /* (2 * GFC_MAX_SYMBOL_LEN) */
59 #define GFC_MAX_LINE 132 /* Characters beyond this are not seen. */
60 #define GFC_MAX_DIMENSIONS 7 /* Maximum dimensions in an array. */
61 #define GFC_LETTERS 26 /* Number of letters in the alphabet. */
63 #define MAX_SUBRECORD_LENGTH 2147483639 /* 2**31-9 */
66 #define free(x) Use_gfc_free_instead_of_free()
67 #define gfc_is_whitespace(c) ((c==' ') || (c=='\t'))
70 #define NULL ((void *) 0)
74 #define stringize(x) expand_macro(x)
75 #define expand_macro(x) # x
77 /* For a the runtime library, a standard prefix is a requirement to
78 avoid cluttering the namespace with things nobody asked for. It's
79 ugly to look at and a pain to type when you add the prefix by hand,
80 so we hide it behind a macro. */
81 #define PREFIX(x) "_gfortran_" x
84 #define BLANK_COMMON_NAME "__BLNK__"
86 /* Macro to initialize an mstring structure. */
87 #define minit(s, t) { s, NULL, t }
89 /* Structure for storing strings to be matched by gfc_match_string. */
99 /* Flags to specify which standard/extension contains a feature. */
100 #define GFC_STD_LEGACY (1<<6) /* Backward compatibility. */
101 #define GFC_STD_GNU (1<<5) /* GNU Fortran extension. */
102 #define GFC_STD_F2003 (1<<4) /* New in F2003. */
103 /* Note that no additional features were deleted or made obsolescent
105 #define GFC_STD_F95 (1<<3) /* New in F95. */
106 #define GFC_STD_F95_DEL (1<<2) /* Deleted in F95. */
107 #define GFC_STD_F95_OBS (1<<1) /* Obsolescent in F95. */
108 #define GFC_STD_F77 (1<<0) /* Included in F77, but not
109 deleted or obsolescent in
112 /* Bitmasks for the various FPE that can be enabled. */
113 #define GFC_FPE_INVALID (1<<0)
114 #define GFC_FPE_DENORMAL (1<<1)
115 #define GFC_FPE_ZERO (1<<2)
116 #define GFC_FPE_OVERFLOW (1<<3)
117 #define GFC_FPE_UNDERFLOW (1<<4)
118 #define GFC_FPE_PRECISION (1<<5)
120 /* Keep this in sync with libgfortran/io/io.h ! */
123 { CONVERT_NATIVE=0, CONVERT_SWAP, CONVERT_BIG, CONVERT_LITTLE }
127 /*************************** Enums *****************************/
129 /* The author remains confused to this day about the convention of
130 returning '0' for 'SUCCESS'... or was it the other way around? The
131 following enum makes things much more readable. We also start
132 values off at one instead of zero. */
135 { SUCCESS = 1, FAILURE }
138 /* This is returned by gfc_notification_std to know if, given the flags
139 that were given (-std=, -pedantic) we should issue an error, a warning
143 { SILENT, WARNING, ERROR }
146 /* Matchers return one of these three values. The difference between
147 MATCH_NO and MATCH_ERROR is that MATCH_ERROR means that a match was
148 successful, but that something non-syntactic is wrong and an error
149 has already been issued. */
152 { MATCH_NO = 1, MATCH_YES, MATCH_ERROR }
156 { FORM_FREE, FORM_FIXED, FORM_UNKNOWN }
159 /* Basic types. BT_VOID is used by ISO C Binding so funcs like c_f_pointer
160 can take any arg with the pointer attribute as a param. */
162 { BT_UNKNOWN = 1, BT_INTEGER, BT_REAL, BT_COMPLEX,
163 BT_LOGICAL, BT_CHARACTER, BT_DERIVED, BT_PROCEDURE, BT_HOLLERITH,
168 /* Expression node types. */
170 { EXPR_OP = 1, EXPR_FUNCTION, EXPR_CONSTANT, EXPR_VARIABLE,
171 EXPR_SUBSTRING, EXPR_STRUCTURE, EXPR_ARRAY, EXPR_NULL
177 { AS_EXPLICIT = 1, AS_ASSUMED_SHAPE, AS_DEFERRED,
178 AS_ASSUMED_SIZE, AS_UNKNOWN
183 { AR_FULL = 1, AR_ELEMENT, AR_SECTION, AR_UNKNOWN }
186 /* Statement label types. */
188 { ST_LABEL_UNKNOWN = 1, ST_LABEL_TARGET,
189 ST_LABEL_BAD_TARGET, ST_LABEL_FORMAT
193 /* Intrinsic operators. */
195 { GFC_INTRINSIC_BEGIN = 0,
196 INTRINSIC_NONE = -1, INTRINSIC_UPLUS = GFC_INTRINSIC_BEGIN,
197 INTRINSIC_UMINUS, INTRINSIC_PLUS, INTRINSIC_MINUS, INTRINSIC_TIMES,
198 INTRINSIC_DIVIDE, INTRINSIC_POWER, INTRINSIC_CONCAT,
199 INTRINSIC_AND, INTRINSIC_OR, INTRINSIC_EQV, INTRINSIC_NEQV,
200 /* ==, /=, >, >=, <, <= */
201 INTRINSIC_EQ, INTRINSIC_NE, INTRINSIC_GT, INTRINSIC_GE,
202 INTRINSIC_LT, INTRINSIC_LE,
203 /* .EQ., .NE., .GT., .GE., .LT., .LE. (OS = Old-Style) */
204 INTRINSIC_EQ_OS, INTRINSIC_NE_OS, INTRINSIC_GT_OS, INTRINSIC_GE_OS,
205 INTRINSIC_LT_OS, INTRINSIC_LE_OS,
206 INTRINSIC_NOT, INTRINSIC_USER, INTRINSIC_ASSIGN,
207 INTRINSIC_PARENTHESES, GFC_INTRINSIC_END /* Sentinel */
212 /* This macro is the number of intrinsic operators that exist.
213 Assumptions are made about the numbering of the interface_op enums. */
214 #define GFC_INTRINSIC_OPS GFC_INTRINSIC_END
216 /* Arithmetic results. */
218 { ARITH_OK = 1, ARITH_OVERFLOW, ARITH_UNDERFLOW, ARITH_NAN,
219 ARITH_DIV0, ARITH_INCOMMENSURATE, ARITH_ASYMMETRIC
226 ST_ARITHMETIC_IF, ST_ALLOCATE, ST_ATTR_DECL, ST_BACKSPACE, ST_BLOCK_DATA,
227 ST_CALL, ST_CASE, ST_CLOSE, ST_COMMON, ST_CONTINUE, ST_CONTAINS, ST_CYCLE,
228 ST_DATA, ST_DATA_DECL, ST_DEALLOCATE, ST_DO, ST_ELSE, ST_ELSEIF,
229 ST_ELSEWHERE, ST_END_BLOCK_DATA, ST_ENDDO, ST_IMPLIED_ENDDO,
230 ST_END_FILE, ST_FLUSH, ST_END_FORALL, ST_END_FUNCTION, ST_ENDIF,
231 ST_END_INTERFACE, ST_END_MODULE, ST_END_PROGRAM, ST_END_SELECT,
232 ST_END_SUBROUTINE, ST_END_WHERE, ST_END_TYPE, ST_ENTRY, ST_EQUIVALENCE,
233 ST_EXIT, ST_FORALL, ST_FORALL_BLOCK, ST_FORMAT, ST_FUNCTION, ST_GOTO,
234 ST_IF_BLOCK, ST_IMPLICIT, ST_IMPLICIT_NONE, ST_IMPORT, ST_INQUIRE, ST_INTERFACE,
235 ST_PARAMETER, ST_MODULE, ST_MODULE_PROC, ST_NAMELIST, ST_NULLIFY, ST_OPEN,
236 ST_PAUSE, ST_PRIVATE, ST_PROGRAM, ST_PUBLIC, ST_READ, ST_RETURN, ST_REWIND,
237 ST_STOP, ST_SUBROUTINE, ST_TYPE, ST_USE, ST_WHERE_BLOCK, ST_WHERE, ST_WRITE,
238 ST_ASSIGNMENT, ST_POINTER_ASSIGNMENT, ST_SELECT_CASE, ST_SEQUENCE,
239 ST_SIMPLE_IF, ST_STATEMENT_FUNCTION, ST_DERIVED_DECL, ST_LABEL_ASSIGNMENT,
240 ST_ENUM, ST_ENUMERATOR, ST_END_ENUM,
241 ST_OMP_ATOMIC, ST_OMP_BARRIER, ST_OMP_CRITICAL, ST_OMP_END_CRITICAL,
242 ST_OMP_END_DO, ST_OMP_END_MASTER, ST_OMP_END_ORDERED, ST_OMP_END_PARALLEL,
243 ST_OMP_END_PARALLEL_DO, ST_OMP_END_PARALLEL_SECTIONS,
244 ST_OMP_END_PARALLEL_WORKSHARE, ST_OMP_END_SECTIONS, ST_OMP_END_SINGLE,
245 ST_OMP_END_WORKSHARE, ST_OMP_DO, ST_OMP_FLUSH, ST_OMP_MASTER, ST_OMP_ORDERED,
246 ST_OMP_PARALLEL, ST_OMP_PARALLEL_DO, ST_OMP_PARALLEL_SECTIONS,
247 ST_OMP_PARALLEL_WORKSHARE, ST_OMP_SECTIONS, ST_OMP_SECTION, ST_OMP_SINGLE,
248 ST_OMP_THREADPRIVATE, ST_OMP_WORKSHARE,
254 /* Types of interfaces that we can have. Assignment interfaces are
255 considered to be intrinsic operators. */
258 INTERFACE_NAMELESS = 1, INTERFACE_GENERIC,
259 INTERFACE_INTRINSIC_OP, INTERFACE_USER_OP, INTERFACE_ABSTRACT
263 /* Symbol flavors: these are all mutually exclusive.
264 10 elements = 4 bits. */
265 typedef enum sym_flavor
267 FL_UNKNOWN = 0, FL_PROGRAM, FL_BLOCK_DATA, FL_MODULE, FL_VARIABLE,
268 FL_PARAMETER, FL_LABEL, FL_PROCEDURE, FL_DERIVED, FL_NAMELIST,
273 /* Procedure types. 7 elements = 3 bits. */
274 typedef enum procedure_type
275 { PROC_UNKNOWN, PROC_MODULE, PROC_INTERNAL, PROC_DUMMY,
276 PROC_INTRINSIC, PROC_ST_FUNCTION, PROC_EXTERNAL
281 typedef enum sym_intent
282 { INTENT_UNKNOWN = 0, INTENT_IN, INTENT_OUT, INTENT_INOUT
287 typedef enum gfc_access
288 { ACCESS_UNKNOWN = 0, ACCESS_PUBLIC, ACCESS_PRIVATE
292 /* Flags to keep track of where an interface came from.
293 4 elements = 2 bits. */
295 { IFSRC_UNKNOWN = 0, IFSRC_DECL, IFSRC_IFBODY, IFSRC_USAGE
299 /* Whether a SAVE attribute was set explicitly or implicitly. */
300 typedef enum save_state
301 { SAVE_NONE = 0, SAVE_EXPLICIT, SAVE_IMPLICIT
305 /* Strings for all symbol attributes. We use these for dumping the
306 parse tree, in error messages, and also when reading and writing
307 modules. In symbol.c. */
308 extern const mstring flavors[];
309 extern const mstring procedures[];
310 extern const mstring intents[];
311 extern const mstring access_types[];
312 extern const mstring ifsrc_types[];
313 extern const mstring save_status[];
315 /* Enumeration of all the generic intrinsic functions. Used by the
316 backend for identification of a function. */
320 /* GFC_ISYM_NONE is used for intrinsics which will never be seen by
321 the backend (eg. KIND). */
352 GFC_ISYM_COMMAND_ARGUMENT_COUNT,
362 GFC_ISYM_DATE_AND_TIME,
366 GFC_ISYM_DOT_PRODUCT,
393 GFC_ISYM_GET_COMMAND,
394 GFC_ISYM_GET_COMMAND_ARGUMENT,
397 GFC_ISYM_GET_ENVIRONMENT_VARIABLE,
451 GFC_ISYM_MAXEXPONENT,
458 GFC_ISYM_MINEXPONENT,
478 GFC_ISYM_RANDOM_NUMBER,
479 GFC_ISYM_RANDOM_SEED,
491 GFC_ISYM_SET_EXPONENT,
511 GFC_ISYM_SYSTEM_CLOCK,
531 typedef enum gfc_isym_id gfc_isym_id;
533 /* Runtime errors. The EOR and EOF errors are required to be negative.
534 These codes must be kept synchronized with their equivalents in
535 libgfortran/libgfortran.h . */
539 IOERROR_FIRST = -3, /* Marker for the first error. */
542 IOERROR_OK = 0, /* Indicates success, must be zero. */
543 IOERROR_OS = 5000, /* Operating system error, more info in errno. */
544 IOERROR_OPTION_CONFLICT,
546 IOERROR_MISSING_OPTION,
547 IOERROR_ALREADY_OPEN,
554 IOERROR_READ_OVERFLOW,
556 IOERROR_INTERNAL_UNIT,
559 IOERROR_SHORT_RECORD,
560 IOERROR_CORRUPT_FILE,
561 IOERROR_LAST /* Not a real error, the last error # + 1. */
566 /************************* Structures *****************************/
568 /* Used for keeping things in balanced binary trees. */
569 #define BBT_HEADER(self) int priority; struct self *left, *right
571 #define NAMED_INTCST(a,b,c) a,
574 ISOFORTRANENV_INVALID = -1,
575 #include "iso-fortran-env.def"
576 ISOFORTRANENV_LAST, ISOFORTRANENV_NUMBER = ISOFORTRANENV_LAST
578 iso_fortran_env_symbol;
581 #define NAMED_INTCST(a,b,c) a,
582 #define NAMED_REALCST(a,b,c) a,
583 #define NAMED_CMPXCST(a,b,c) a,
584 #define NAMED_LOGCST(a,b,c) a,
585 #define NAMED_CHARKNDCST(a,b,c) a,
586 #define NAMED_CHARCST(a,b,c) a,
587 #define DERIVED_TYPE(a,b,c) a,
588 #define PROCEDURE(a,b) a,
591 ISOCBINDING_INVALID = -1,
592 #include "iso-c-binding.def"
594 ISOCBINDING_NUMBER = ISOCBINDING_LAST
596 iso_c_binding_symbol;
601 #undef NAMED_CHARKNDCST
608 INTMOD_NONE = 0, INTMOD_ISO_FORTRAN_ENV, INTMOD_ISO_C_BINDING
614 char name[GFC_MAX_SYMBOL_LEN + 1];
615 int value; /* Used for both integer and character values. */
620 /* Array of structs, where the structs represent the C interop kinds.
621 The list will be implemented based on a hash of the kind name since
622 these could be accessed multiple times.
623 Declared in trans-types.c as a global, since it's in that file
624 that the list is initialized. */
625 extern CInteropKind_t c_interop_kinds_table[];
627 /* Symbol attribute structure. */
630 /* Variable attributes. */
631 unsigned allocatable:1, dimension:1, external:1, intrinsic:1,
632 optional:1, pointer:1, target:1, value:1, volatile_:1,
633 dummy:1, result:1, assign:1, threadprivate:1, not_always_present:1,
636 ENUM_BITFIELD (save_state) save:2;
638 unsigned data:1, /* Symbol is named in a DATA statement. */
639 protected:1, /* Symbol has been marked as protected. */
640 use_assoc:1, /* Symbol has been use-associated. */
641 use_only:1, /* Symbol has been use-associated, with ONLY. */
642 imported:1; /* Symbol has been associated by IMPORT. */
644 unsigned in_namelist:1, in_common:1, in_equivalence:1;
645 unsigned function:1, subroutine:1, generic:1, generic_copy:1;
646 unsigned implicit_type:1; /* Type defined via implicit rules. */
647 unsigned untyped:1; /* No implicit type could be found. */
649 unsigned is_bind_c:1; /* say if is bound to C */
651 /* These flags are both in the typespec and attribute. The attribute
652 list is what gets read from/written to a module file. The typespec
653 is created from a decl being processed. */
654 unsigned is_c_interop:1; /* It's c interoperable. */
655 unsigned is_iso_c:1; /* Symbol is from iso_c_binding. */
657 /* Function/subroutine attributes */
658 unsigned sequence:1, elemental:1, pure:1, recursive:1;
659 unsigned unmaskable:1, masked:1, contained:1, mod_proc:1, abstract:1;
661 /* This is set if the subroutine doesn't return. Currently, this
662 is only possible for intrinsic subroutines. */
665 /* Set if this procedure is an alternate entry point. These procedures
666 don't have any code associated, and the backend will turn them into
667 thunks to the master function. */
670 /* Set if this is the master function for a procedure with multiple
672 unsigned entry_master:1;
674 /* Set if this is the master function for a function with multiple
675 entry points where characteristics of the entry points differ. */
676 unsigned mixed_entry_master:1;
678 /* Set if a function must always be referenced by an explicit interface. */
679 unsigned always_explicit:1;
681 /* Set if the symbol has been referenced in an expression. No further
682 modification of type or type parameters is permitted. */
683 unsigned referenced:1;
685 /* Set if the symbol has ambiguous interfaces. */
686 unsigned ambiguous_interfaces:1;
688 /* Set if the is the symbol for the main program. This is the least
689 cumbersome way to communicate this function property without
690 strcmp'ing with __MAIN everywhere. */
691 unsigned is_main_program:1;
693 /* Mutually exclusive multibit attributes. */
694 ENUM_BITFIELD (gfc_access) access:2;
695 ENUM_BITFIELD (sym_intent) intent:2;
696 ENUM_BITFIELD (sym_flavor) flavor:4;
697 ENUM_BITFIELD (ifsrc) if_source:2;
699 ENUM_BITFIELD (procedure_type) proc:3;
701 /* Special attributes for Cray pointers, pointees. */
702 unsigned cray_pointer:1, cray_pointee:1;
704 /* The symbol is a derived type with allocatable components, pointer
705 components or private components, possibly nested. */
706 unsigned alloc_comp:1, pointer_comp:1, private_comp:1;
708 /* The namespace where the VOLATILE attribute has been set. */
709 struct gfc_namespace *volatile_ns;
714 /* The following three structures are used to identify a location in
717 gfc_file is used to maintain a tree of the source files and how
718 they include each other
720 gfc_linebuf holds a single line of source code and information
721 which file it resides in
723 locus point to the sourceline and the character in the source
727 typedef struct gfc_file
729 struct gfc_file *included_by, *next, *up;
730 int inclusion_line, line;
734 typedef struct gfc_linebuf
736 #ifdef USE_MAPPED_LOCATION
737 source_location location;
741 struct gfc_file *file;
742 struct gfc_linebuf *next;
749 #define gfc_linebuf_header_size (offsetof (gfc_linebuf, line))
757 /* In order for the "gfc" format checking to work correctly, you must
758 have declared a typedef locus first. */
759 #if GCC_VERSION >= 4001
760 #define ATTRIBUTE_GCC_GFC(m, n) __attribute__ ((__format__ (__gcc_gfc__, m, n))) ATTRIBUTE_NONNULL(m)
762 #define ATTRIBUTE_GCC_GFC(m, n) ATTRIBUTE_NONNULL(m)
766 extern int gfc_suppress_error;
769 /* Character length structures hold the expression that gives the
770 length of a character variable. We avoid putting these into
771 gfc_typespec because doing so prevents us from doing structure
772 copies and forces us to deallocate any typespecs we create, as well
773 as structures that contain typespecs. They also can have multiple
774 character typespecs pointing to them.
776 These structures form a singly linked list within the current
777 namespace and are deallocated with the namespace. It is possible to
778 end up with gfc_charlen structures that have nothing pointing to them. */
780 typedef struct gfc_charlen
782 struct gfc_expr *length;
783 struct gfc_charlen *next;
790 #define gfc_get_charlen() gfc_getmem(sizeof(gfc_charlen))
792 /* Type specification structure. FIXME: derived and cl could be union??? */
797 struct gfc_symbol *derived;
798 gfc_charlen *cl; /* For character types only. */
805 /* Array specification. */
808 int rank; /* A rank of zero means that a variable is a scalar. */
810 struct gfc_expr *lower[GFC_MAX_DIMENSIONS], *upper[GFC_MAX_DIMENSIONS];
812 /* These two fields are used with the Cray Pointer extension. */
813 bool cray_pointee; /* True iff this spec belongs to a cray pointee. */
814 bool cp_was_assumed; /* AS_ASSUMED_SIZE cp arrays are converted to
815 AS_EXPLICIT, but we want to remember that we
821 #define gfc_get_array_spec() gfc_getmem(sizeof(gfc_array_spec))
824 /* Components of derived types. */
825 typedef struct gfc_component
830 int pointer, allocatable, dimension;
836 struct gfc_expr *initializer;
837 struct gfc_component *next;
841 #define gfc_get_component() gfc_getmem(sizeof(gfc_component))
843 /* Formal argument lists are lists of symbols. */
844 typedef struct gfc_formal_arglist
846 /* Symbol representing the argument at this position in the arglist. */
847 struct gfc_symbol *sym;
848 /* Points to the next formal argument. */
849 struct gfc_formal_arglist *next;
853 #define gfc_get_formal_arglist() gfc_getmem(sizeof(gfc_formal_arglist))
856 /* The gfc_actual_arglist structure is for actual arguments. */
857 typedef struct gfc_actual_arglist
860 /* Alternate return label when the expr member is null. */
861 struct gfc_st_label *label;
863 /* This is set to the type of an eventual omitted optional
864 argument. This is used to determine if a hidden string length
865 argument has to be added to a function call. */
868 struct gfc_expr *expr;
869 struct gfc_actual_arglist *next;
873 #define gfc_get_actual_arglist() gfc_getmem(sizeof(gfc_actual_arglist))
876 /* Because a symbol can belong to multiple namelists, they must be
877 linked externally to the symbol itself. */
878 typedef struct gfc_namelist
880 struct gfc_symbol *sym;
881 struct gfc_namelist *next;
885 #define gfc_get_namelist() gfc_getmem(sizeof(gfc_namelist))
890 OMP_LIST_FIRSTPRIVATE,
891 OMP_LIST_LASTPRIVATE,
892 OMP_LIST_COPYPRIVATE,
896 OMP_LIST_REDUCTION_FIRST = OMP_LIST_PLUS,
908 OMP_LIST_REDUCTION_LAST = OMP_LIST_IEOR,
912 /* Because a symbol can belong to multiple namelists, they must be
913 linked externally to the symbol itself. */
914 typedef struct gfc_omp_clauses
916 struct gfc_expr *if_expr;
917 struct gfc_expr *num_threads;
918 gfc_namelist *lists[OMP_LIST_NUM];
927 struct gfc_expr *chunk_size;
935 bool nowait, ordered;
939 #define gfc_get_omp_clauses() gfc_getmem(sizeof(gfc_omp_clauses))
942 /* The gfc_st_label structure is a doubly linked list attached to a
943 namespace that records the usage of statement labels within that
945 /* TODO: Make format/statement specifics a union. */
946 typedef struct gfc_st_label
948 BBT_HEADER(gfc_st_label);
952 gfc_sl_type defined, referenced;
954 struct gfc_expr *format;
963 /* gfc_interface()-- Interfaces are lists of symbols strung together. */
964 typedef struct gfc_interface
966 struct gfc_symbol *sym;
968 struct gfc_interface *next;
972 #define gfc_get_interface() gfc_getmem(sizeof(gfc_interface))
975 /* User operator nodes. These are like stripped down symbols. */
980 gfc_interface *operator;
981 struct gfc_namespace *ns;
986 /* Symbol nodes. These are important things. They are what the
987 standard refers to as "entities". The possibly multiple names that
988 refer to the same entity are accomplished by a binary tree of
989 symtree structures that is balanced by the red-black method-- more
990 than one symtree node can point to any given symbol. */
992 typedef struct gfc_symbol
994 const char *name; /* Primary name, before renaming */
995 const char *module; /* Module this symbol came from */
999 symbol_attribute attr;
1001 /* The interface member points to the formal argument list if the
1002 symbol is a function or subroutine name. If the symbol is a
1003 generic name, the generic member points to the list of
1006 gfc_interface *generic;
1007 gfc_access component_access;
1009 gfc_formal_arglist *formal;
1010 struct gfc_namespace *formal_ns;
1012 struct gfc_expr *value; /* Parameter/Initializer value */
1014 struct gfc_symbol *result; /* function result symbol */
1015 gfc_component *components; /* Derived type components */
1017 /* Defined only for Cray pointees; points to their pointer. */
1018 struct gfc_symbol *cp_pointer;
1020 struct gfc_symbol *common_next; /* Links for COMMON syms */
1022 /* This is in fact a gfc_common_head but it is only used for pointer
1023 comparisons to check if symbols are in the same common block. */
1024 struct gfc_common_head* common_head;
1026 /* Make sure setup code for dummy arguments is generated in the correct
1032 gfc_namelist *namelist, *namelist_tail;
1034 /* Change management fields. Symbols that might be modified by the
1035 current statement have the mark member nonzero and are kept in a
1036 singly linked list through the tlink field. Of these symbols,
1037 symbols with old_symbol equal to NULL are symbols created within
1038 the current statement. Otherwise, old_symbol points to a copy of
1041 struct gfc_symbol *old_symbol, *tlink;
1042 unsigned mark:1, new:1;
1043 /* Nonzero if all equivalences associated with this symbol have been
1045 unsigned equiv_built:1;
1046 /* Set if this variable is used as an index name in a FORALL. */
1047 unsigned forall_index:1;
1049 struct gfc_namespace *ns; /* namespace containing this symbol */
1053 /* Identity of the intrinsic module the symbol comes from, or
1054 INTMOD_NONE if it's not imported from a intrinsic module. */
1055 intmod_id from_intmod;
1056 /* Identity of the symbol from intrinsic modules, from enums maintained
1057 separately by each intrinsic module. Used together with from_intmod,
1058 it uniquely identifies a symbol from an intrinsic module. */
1061 /* This may be repetitive, since the typespec now has a binding
1063 char binding_label[GFC_MAX_BINDING_LABEL_LEN + 1];
1064 /* Store a reference to the common_block, if this symbol is in one. */
1065 struct gfc_common_head *common_block;
1070 /* This structure is used to keep track of symbols in common blocks. */
1071 typedef struct gfc_common_head
1074 char use_assoc, saved, threadprivate;
1075 char name[GFC_MAX_SYMBOL_LEN + 1];
1076 struct gfc_symbol *head;
1077 char binding_label[GFC_MAX_BINDING_LABEL_LEN + 1];
1082 #define gfc_get_common_head() gfc_getmem(sizeof(gfc_common_head))
1085 /* A list of all the alternate entry points for a procedure. */
1087 typedef struct gfc_entry_list
1089 /* The symbol for this entry point. */
1091 /* The zero-based id of this entry point. */
1093 /* The LABEL_EXPR marking this entry point. */
1095 /* The nest item in the list. */
1096 struct gfc_entry_list *next;
1100 #define gfc_get_entry_list() \
1101 (gfc_entry_list *) gfc_getmem(sizeof(gfc_entry_list))
1103 /* Within a namespace, symbols are pointed to by symtree nodes that
1104 are linked together in a balanced binary tree. There can be
1105 several symtrees pointing to the same symbol node via USE
1108 typedef struct gfc_symtree
1110 BBT_HEADER (gfc_symtree);
1115 gfc_symbol *sym; /* Symbol associated with this node */
1117 gfc_common_head *common;
1124 /* A linked list of derived types in the namespace. */
1125 typedef struct gfc_dt_list
1127 struct gfc_symbol *derived;
1128 struct gfc_dt_list *next;
1132 #define gfc_get_dt_list() gfc_getmem(sizeof(gfc_dt_list))
1134 /* A list of all derived types. */
1135 extern gfc_dt_list *gfc_derived_types;
1137 /* A namespace describes the contents of procedure, module or
1139 /* ??? Anything else use these? */
1141 typedef struct gfc_namespace
1143 /* Tree containing all the symbols in this namespace. */
1144 gfc_symtree *sym_root;
1145 /* Tree containing all the user-defined operators in the namespace. */
1146 gfc_symtree *uop_root;
1147 /* Tree containing all the common blocks. */
1148 gfc_symtree *common_root;
1150 /* If set_flag[letter] is set, an implicit type has been set for letter. */
1151 int set_flag[GFC_LETTERS];
1152 /* Keeps track of the implicit types associated with the letters. */
1153 gfc_typespec default_type[GFC_LETTERS];
1155 /* If this is a namespace of a procedure, this points to the procedure. */
1156 struct gfc_symbol *proc_name;
1157 /* If this is the namespace of a unit which contains executable
1158 code, this points to it. */
1159 struct gfc_code *code;
1161 /* Points to the equivalences set up in this namespace. */
1162 struct gfc_equiv *equiv;
1164 /* Points to the equivalence groups produced by trans_common. */
1165 struct gfc_equiv_list *equiv_lists;
1167 gfc_interface *operator[GFC_INTRINSIC_OPS];
1169 /* Points to the parent namespace, i.e. the namespace of a module or
1170 procedure in which the procedure belonging to this namespace is
1171 contained. The parent namespace points to this namespace either
1172 directly via CONTAINED, or indirectly via the chain built by
1174 struct gfc_namespace *parent;
1175 /* CONTAINED points to the first contained namespace. Sibling
1176 namespaces are chained via SIBLING. */
1177 struct gfc_namespace *contained, *sibling;
1179 gfc_common_head blank_common;
1180 gfc_access default_access, operator_access[GFC_INTRINSIC_OPS];
1182 gfc_st_label *st_labels;
1183 /* This list holds information about all the data initializers in
1185 struct gfc_data *data;
1187 gfc_charlen *cl_list;
1189 int save_all, seen_save, seen_implicit_none;
1191 /* Normally we don't need to refcount namespaces. However when we read
1192 a module containing a function with multiple entry points, this
1193 will appear as several functions with the same formal namespace. */
1196 /* A list of all alternate entry points to this procedure (or NULL). */
1197 gfc_entry_list *entries;
1199 /* Set to 1 if namespace is a BLOCK DATA program unit. */
1202 /* Set to 1 if namespace is an interface body with "IMPORT" used. */
1207 extern gfc_namespace *gfc_current_ns;
1209 /* Global symbols are symbols of global scope. Currently we only use
1210 this to detect collisions already when parsing.
1211 TODO: Extend to verify procedure calls. */
1213 typedef struct gfc_gsymbol
1215 BBT_HEADER(gfc_gsymbol);
1218 const char *sym_name;
1219 const char *mod_name;
1220 const char *binding_label;
1221 enum { GSYM_UNKNOWN=1, GSYM_PROGRAM, GSYM_FUNCTION, GSYM_SUBROUTINE,
1222 GSYM_MODULE, GSYM_COMMON, GSYM_BLOCK_DATA } type;
1229 extern gfc_gsymbol *gfc_gsym_root;
1231 /* Information on interfaces being built. */
1234 interface_type type;
1238 gfc_intrinsic_op op;
1242 extern gfc_interface_info current_interface;
1245 /* Array reference. */
1246 typedef struct gfc_array_ref
1249 int dimen; /* # of components in the reference */
1253 locus c_where[GFC_MAX_DIMENSIONS]; /* All expressions can be NULL */
1254 struct gfc_expr *start[GFC_MAX_DIMENSIONS], *end[GFC_MAX_DIMENSIONS],
1255 *stride[GFC_MAX_DIMENSIONS];
1258 { DIMEN_ELEMENT = 1, DIMEN_RANGE, DIMEN_VECTOR, DIMEN_UNKNOWN }
1259 dimen_type[GFC_MAX_DIMENSIONS];
1261 struct gfc_expr *offset;
1265 #define gfc_get_array_ref() gfc_getmem(sizeof(gfc_array_ref))
1268 /* Component reference nodes. A variable is stored as an expression
1269 node that points to the base symbol. After that, a singly linked
1270 list of component reference nodes gives the variable's complete
1271 resolution. The array_ref component may be present and comes
1272 before the component component. */
1275 { REF_ARRAY, REF_COMPONENT, REF_SUBSTRING }
1278 typedef struct gfc_ref
1284 struct gfc_array_ref ar;
1288 gfc_component *component;
1295 struct gfc_expr *start, *end; /* Substring */
1296 gfc_charlen *length;
1303 struct gfc_ref *next;
1307 #define gfc_get_ref() gfc_getmem(sizeof(gfc_ref))
1310 /* Structures representing intrinsic symbols and their arguments lists. */
1311 typedef struct gfc_intrinsic_arg
1313 char name[GFC_MAX_SYMBOL_LEN + 1];
1317 gfc_actual_arglist *actual;
1319 struct gfc_intrinsic_arg *next;
1325 /* Specifies the various kinds of check functions used to verify the
1326 argument lists of intrinsic functions. fX with X an integer refer
1327 to check functions of intrinsics with X arguments. f1m is used for
1328 the MAX and MIN intrinsics which can have an arbitrary number of
1329 arguments, f3ml is used for the MINLOC and MAXLOC intrinsics as
1330 these have special semantics. */
1335 try (*f1)(struct gfc_expr *);
1336 try (*f1m)(gfc_actual_arglist *);
1337 try (*f2)(struct gfc_expr *, struct gfc_expr *);
1338 try (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1339 try (*f3ml)(gfc_actual_arglist *);
1340 try (*f3red)(gfc_actual_arglist *);
1341 try (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1343 try (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1344 struct gfc_expr *, struct gfc_expr *);
1348 /* Like gfc_check_f, these specify the type of the simplification
1349 function associated with an intrinsic. The fX are just like in
1350 gfc_check_f. cc is used for type conversion functions. */
1354 struct gfc_expr *(*f0)(void);
1355 struct gfc_expr *(*f1)(struct gfc_expr *);
1356 struct gfc_expr *(*f2)(struct gfc_expr *, struct gfc_expr *);
1357 struct gfc_expr *(*f3)(struct gfc_expr *, struct gfc_expr *,
1359 struct gfc_expr *(*f4)(struct gfc_expr *, struct gfc_expr *,
1360 struct gfc_expr *, struct gfc_expr *);
1361 struct gfc_expr *(*f5)(struct gfc_expr *, struct gfc_expr *,
1362 struct gfc_expr *, struct gfc_expr *,
1364 struct gfc_expr *(*cc)(struct gfc_expr *, bt, int);
1368 /* Again like gfc_check_f, these specify the type of the resolution
1369 function associated with an intrinsic. The fX are just like in
1370 gfc_check_f. f1m is used for MIN and MAX, s1 is used for abort(). */
1374 void (*f0)(struct gfc_expr *);
1375 void (*f1)(struct gfc_expr *, struct gfc_expr *);
1376 void (*f1m)(struct gfc_expr *, struct gfc_actual_arglist *);
1377 void (*f2)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1378 void (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1380 void (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1381 struct gfc_expr *, struct gfc_expr *);
1382 void (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1383 struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1384 void (*s1)(struct gfc_code *);
1389 typedef struct gfc_intrinsic_sym
1391 const char *name, *lib_name;
1392 gfc_intrinsic_arg *formal;
1394 unsigned elemental:1, inquiry:1, transformational:1, pure:1,
1395 generic:1, specific:1, actual_ok:1, noreturn:1, conversion:1;
1399 gfc_simplify_f simplify;
1401 gfc_resolve_f resolve;
1402 struct gfc_intrinsic_sym *specific_head, *next;
1409 /* Expression nodes. The expression node types deserve explanations,
1410 since the last couple can be easily misconstrued:
1412 EXPR_OP Operator node pointing to one or two other nodes
1413 EXPR_FUNCTION Function call, symbol points to function's name
1414 EXPR_CONSTANT A scalar constant: Logical, String, Real, Int or Complex
1415 EXPR_VARIABLE An Lvalue with a root symbol and possible reference list
1416 which expresses structure, array and substring refs.
1417 EXPR_NULL The NULL pointer value (which also has a basic type).
1418 EXPR_SUBSTRING A substring of a constant string
1419 EXPR_STRUCTURE A structure constructor
1420 EXPR_ARRAY An array constructor. */
1424 #define GFC_RND_MODE GMP_RNDN
1426 typedef struct gfc_expr
1430 gfc_typespec ts; /* These two refer to the overall expression */
1433 mpz_t *shape; /* Can be NULL if shape is unknown at compile time */
1435 /* Nonnull for functions and structure constructors */
1436 gfc_symtree *symtree;
1442 /* True if the expression is a call to a function that returns an array,
1443 and if we have decided not to allocate temporary data for that array. */
1444 unsigned int inline_noncopying_intrinsic : 1;
1446 /* Used to quickly find a given constructor by its offset. */
1447 splay_tree con_by_offset;
1449 /* If an expression comes from a Hollerith constant or compile-time
1450 evaluation of a transfer statement, it may have a prescribed target-
1451 memory representation, and these cannot always be backformed from
1476 gfc_intrinsic_op operator;
1478 struct gfc_expr *op1, *op2;
1484 gfc_actual_arglist *actual;
1485 const char *name; /* Points to the ultimate name of the function */
1486 gfc_intrinsic_sym *isym;
1498 struct gfc_constructor *constructor;
1506 #define gfc_get_shape(rank) ((mpz_t *) gfc_getmem((rank)*sizeof(mpz_t)))
1508 /* Structures for information associated with different kinds of
1509 numbers. The first set of integer parameters define all there is
1510 to know about a particular kind. The rest of the elements are
1511 computed from the first elements. */
1515 /* Values really representable by the target. */
1516 mpz_t huge, pedantic_min_int, min_int;
1518 int kind, radix, digits, bit_size, range;
1520 /* True if the C type of the given name maps to this precision.
1521 Note that more than one bit can be set. */
1522 unsigned int c_char : 1;
1523 unsigned int c_short : 1;
1524 unsigned int c_int : 1;
1525 unsigned int c_long : 1;
1526 unsigned int c_long_long : 1;
1530 extern gfc_integer_info gfc_integer_kinds[];
1537 /* True if the C++ type bool, C99 type _Bool, maps to this precision. */
1538 unsigned int c_bool : 1;
1542 extern gfc_logical_info gfc_logical_kinds[];
1547 mpfr_t epsilon, huge, tiny, subnormal;
1548 int kind, radix, digits, min_exponent, max_exponent;
1549 int range, precision;
1551 /* The precision of the type as reported by GET_MODE_PRECISION. */
1554 /* True if the C type of the given name maps to this precision.
1555 Note that more than one bit can be set. */
1556 unsigned int c_float : 1;
1557 unsigned int c_double : 1;
1558 unsigned int c_long_double : 1;
1562 extern gfc_real_info gfc_real_kinds[];
1565 /* Equivalence structures. Equivalent lvalues are linked along the
1566 *eq pointer, equivalence sets are strung along the *next node. */
1567 typedef struct gfc_equiv
1569 struct gfc_equiv *next, *eq;
1576 #define gfc_get_equiv() gfc_getmem(sizeof(gfc_equiv))
1578 /* Holds a single equivalence member after processing. */
1579 typedef struct gfc_equiv_info
1582 HOST_WIDE_INT offset;
1583 HOST_WIDE_INT length;
1584 struct gfc_equiv_info *next;
1587 /* Holds equivalence groups, after they have been processed. */
1588 typedef struct gfc_equiv_list
1590 gfc_equiv_info *equiv;
1591 struct gfc_equiv_list *next;
1594 /* gfc_case stores the selector list of a case statement. The *low
1595 and *high pointers can point to the same expression in the case of
1596 a single value. If *high is NULL, the selection is from *low
1597 upwards, if *low is NULL the selection is *high downwards.
1599 This structure has separate fields to allow single and double linked
1600 lists of CASEs at the same time. The singe linked list along the NEXT
1601 field is a list of cases for a single CASE label. The double linked
1602 list along the LEFT/RIGHT fields is used to detect overlap and to
1603 build a table of the cases for SELECT constructs with a CHARACTER
1606 typedef struct gfc_case
1608 /* Where we saw this case. */
1612 /* Case range values. If (low == high), it's a single value. If one of
1613 the labels is NULL, it's an unbounded case. If both are NULL, this
1614 represents the default case. */
1615 gfc_expr *low, *high;
1617 /* Next case label in the list of cases for a single CASE label. */
1618 struct gfc_case *next;
1620 /* Used for detecting overlap, and for code generation. */
1621 struct gfc_case *left, *right;
1623 /* True if this case label can never be matched. */
1628 #define gfc_get_case() gfc_getmem(sizeof(gfc_case))
1633 gfc_expr *var, *start, *end, *step;
1637 #define gfc_get_iterator() gfc_getmem(sizeof(gfc_iterator))
1640 /* Allocation structure for ALLOCATE, DEALLOCATE and NULLIFY statements. */
1642 typedef struct gfc_alloc
1645 struct gfc_alloc *next;
1649 #define gfc_get_alloc() gfc_getmem(sizeof(gfc_alloc))
1654 gfc_expr *unit, *file, *status, *access, *form, *recl,
1655 *blank, *position, *action, *delim, *pad, *iostat, *iomsg, *convert;
1663 gfc_expr *unit, *status, *iostat, *iomsg;
1671 gfc_expr *unit, *iostat, *iomsg;
1679 gfc_expr *unit, *file, *iostat, *exist, *opened, *number, *named,
1680 *name, *access, *sequential, *direct, *form, *formatted,
1681 *unformatted, *recl, *nextrec, *blank, *position, *action, *read,
1682 *write, *readwrite, *delim, *pad, *iolength, *iomsg, *convert, *strm_pos;
1692 gfc_expr *io_unit, *format_expr, *rec, *advance, *iostat, *size, *iomsg;
1694 gfc_symbol *namelist;
1695 /* A format_label of `format_asterisk' indicates the "*" format */
1696 gfc_st_label *format_label;
1697 gfc_st_label *err, *end, *eor;
1699 locus eor_where, end_where, err_where;
1704 typedef struct gfc_forall_iterator
1706 gfc_expr *var, *start, *end, *stride;
1707 struct gfc_forall_iterator *next;
1709 gfc_forall_iterator;
1712 /* Executable statements that fill gfc_code structures. */
1715 EXEC_NOP = 1, EXEC_ASSIGN, EXEC_LABEL_ASSIGN, EXEC_POINTER_ASSIGN,
1716 EXEC_GOTO, EXEC_CALL, EXEC_ASSIGN_CALL, EXEC_RETURN, EXEC_ENTRY,
1717 EXEC_PAUSE, EXEC_STOP, EXEC_CONTINUE, EXEC_INIT_ASSIGN,
1718 EXEC_IF, EXEC_ARITHMETIC_IF, EXEC_DO, EXEC_DO_WHILE, EXEC_SELECT,
1719 EXEC_FORALL, EXEC_WHERE, EXEC_CYCLE, EXEC_EXIT,
1720 EXEC_ALLOCATE, EXEC_DEALLOCATE,
1721 EXEC_OPEN, EXEC_CLOSE,
1722 EXEC_READ, EXEC_WRITE, EXEC_IOLENGTH, EXEC_TRANSFER, EXEC_DT_END,
1723 EXEC_BACKSPACE, EXEC_ENDFILE, EXEC_INQUIRE, EXEC_REWIND, EXEC_FLUSH,
1724 EXEC_OMP_CRITICAL, EXEC_OMP_DO, EXEC_OMP_FLUSH, EXEC_OMP_MASTER,
1725 EXEC_OMP_ORDERED, EXEC_OMP_PARALLEL, EXEC_OMP_PARALLEL_DO,
1726 EXEC_OMP_PARALLEL_SECTIONS, EXEC_OMP_PARALLEL_WORKSHARE,
1727 EXEC_OMP_SECTIONS, EXEC_OMP_SINGLE, EXEC_OMP_WORKSHARE,
1728 EXEC_OMP_ATOMIC, EXEC_OMP_BARRIER, EXEC_OMP_END_NOWAIT,
1733 typedef struct gfc_code
1737 struct gfc_code *block, *next;
1740 gfc_st_label *here, *label, *label2, *label3;
1741 gfc_symtree *symtree;
1742 gfc_expr *expr, *expr2;
1743 /* A name isn't sufficient to identify a subroutine, we need the actual
1744 symbol for the interface definition.
1745 const char *sub_name; */
1746 gfc_symbol *resolved_sym;
1750 gfc_actual_arglist *actual;
1751 gfc_case *case_list;
1752 gfc_iterator *iterator;
1753 gfc_alloc *alloc_list;
1756 gfc_filepos *filepos;
1757 gfc_inquire *inquire;
1759 gfc_forall_iterator *forall_iterator;
1760 struct gfc_code *whichloop;
1762 gfc_entry_list *entry;
1763 gfc_omp_clauses *omp_clauses;
1764 const char *omp_name;
1765 gfc_namelist *omp_namelist;
1768 ext; /* Points to additional structures required by statement */
1770 /* Backend_decl is used for cycle and break labels in do loops, and
1771 probably for other constructs as well, once we translate them. */
1777 /* Storage for DATA statements. */
1778 typedef struct gfc_data_variable
1782 struct gfc_data_variable *list, *next;
1787 typedef struct gfc_data_value
1789 unsigned int repeat;
1791 struct gfc_data_value *next;
1796 typedef struct gfc_data
1798 gfc_data_variable *var;
1799 gfc_data_value *value;
1802 struct gfc_data *next;
1806 #define gfc_get_data_variable() gfc_getmem(sizeof(gfc_data_variable))
1807 #define gfc_get_data_value() gfc_getmem(sizeof(gfc_data_value))
1808 #define gfc_get_data() gfc_getmem(sizeof(gfc_data))
1811 /* Structure for holding compile options */
1815 gfc_source_form source_form;
1816 /* Maximum line lengths in fixed- and free-form source, respectively.
1817 When fixed_line_length or free_line_length are 0, the whole line is used,
1818 regardless of length.
1820 If the user requests a fixed_line_length <7 then gfc_init_options()
1821 emits a fatal error. */
1822 int fixed_line_length;
1823 int free_line_length;
1824 /* Maximum number of continuation lines in fixed- and free-form source,
1826 int max_continue_fixed;
1827 int max_continue_free;
1828 int max_identifier_length;
1833 int warn_conversion;
1834 int warn_implicit_interface;
1835 int warn_line_truncation;
1836 int warn_surprising;
1839 int warn_character_truncation;
1842 int flag_all_intrinsics;
1843 int flag_default_double;
1844 int flag_default_integer;
1845 int flag_default_real;
1847 int flag_underscoring;
1848 int flag_second_underscore;
1849 int flag_implicit_none;
1850 int flag_max_stack_var_size;
1851 int flag_range_check;
1852 int flag_pack_derived;
1853 int flag_repack_arrays;
1854 int flag_preprocessed;
1859 int flag_allow_leading_underscore;
1861 int flag_external_blas;
1862 int blas_matmul_limit;
1863 int flag_cray_pointer;
1867 int flag_module_private;
1874 int warn_nonstd_intrinsics;
1878 int max_subrecord_length;
1882 extern gfc_option_t gfc_option;
1884 /* Constructor nodes for array and structure constructors. */
1885 typedef struct gfc_constructor
1888 gfc_iterator *iterator;
1890 struct gfc_constructor *next;
1893 mpz_t offset; /* Record the offset of array element which appears in
1894 data statement like "data a(5)/4/". */
1895 gfc_component *component; /* Record the component being initialized. */
1898 mpz_t repeat; /* Record the repeat number of initial values in data
1899 statement like "data a/5*10/". */
1904 typedef struct iterator_stack
1906 gfc_symtree *variable;
1908 struct iterator_stack *prev;
1911 extern iterator_stack *iter_stack;
1913 /************************ Function prototypes *************************/
1916 void gfc_formalize_init_value (gfc_symbol *);
1917 void gfc_get_section_index (gfc_array_ref *, mpz_t *, mpz_t *);
1918 try gfc_assign_data_value (gfc_expr *, gfc_expr *, mpz_t);
1919 void gfc_assign_data_value_range (gfc_expr *, gfc_expr *, mpz_t, mpz_t);
1920 void gfc_advance_section (mpz_t *, gfc_array_ref *, mpz_t *);
1923 bool gfc_in_match_data (void);
1924 void gfc_set_in_match_data (bool);
1927 void gfc_scanner_done_1 (void);
1928 void gfc_scanner_init_1 (void);
1930 void gfc_add_include_path (const char *, bool);
1931 void gfc_add_intrinsic_modules_path (const char *);
1932 void gfc_release_include_path (void);
1933 FILE *gfc_open_included_file (const char *, bool, bool);
1934 FILE *gfc_open_intrinsic_module (const char *);
1936 int gfc_at_end (void);
1937 int gfc_at_eof (void);
1938 int gfc_at_bol (void);
1939 int gfc_at_eol (void);
1940 void gfc_advance_line (void);
1941 int gfc_check_include (void);
1943 void gfc_skip_comments (void);
1944 int gfc_next_char_literal (int);
1945 int gfc_next_char (void);
1946 int gfc_peek_char (void);
1947 void gfc_error_recovery (void);
1948 void gfc_gobble_whitespace (void);
1949 try gfc_new_file (void);
1950 const char * gfc_read_orig_filename (const char *, const char **);
1952 extern gfc_source_form gfc_current_form;
1953 extern const char *gfc_source_file;
1954 extern locus gfc_current_locus;
1957 void *gfc_getmem (size_t) ATTRIBUTE_MALLOC;
1958 void gfc_free (void *);
1959 int gfc_terminal_width (void);
1960 void gfc_clear_ts (gfc_typespec *);
1961 FILE *gfc_open_file (const char *);
1962 const char *gfc_basic_typename (bt);
1963 const char *gfc_typename (gfc_typespec *);
1964 const char *gfc_op2string (gfc_intrinsic_op);
1965 const char *gfc_code2string (const mstring *, int);
1966 int gfc_string2code (const mstring *, const char *);
1967 const char *gfc_intent_string (sym_intent);
1969 void gfc_init_1 (void);
1970 void gfc_init_2 (void);
1971 void gfc_done_1 (void);
1972 void gfc_done_2 (void);
1974 int get_c_kind (const char *, CInteropKind_t *);
1977 unsigned int gfc_init_options (unsigned int, const char **);
1978 int gfc_handle_option (size_t, const char *, int);
1979 bool gfc_post_options (const char **);
1982 const char * gfc_get_string (const char *, ...) ATTRIBUTE_PRINTF_1;
1986 typedef struct gfc_error_buf
1989 size_t allocated, index;
1993 void gfc_error_init_1 (void);
1994 void gfc_buffer_error (int);
1996 void gfc_warning (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
1997 void gfc_warning_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
1998 void gfc_clear_warning (void);
1999 void gfc_warning_check (void);
2001 void gfc_error (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2002 void gfc_error_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2003 void gfc_fatal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2004 void gfc_internal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2005 void gfc_clear_error (void);
2006 int gfc_error_check (void);
2007 int gfc_error_flag_test (void);
2009 notification gfc_notification_std (int);
2010 try gfc_notify_std (int, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
2012 /* A general purpose syntax error. */
2013 #define gfc_syntax_error(ST) \
2014 gfc_error ("Syntax error in %s statement at %C", gfc_ascii_statement (ST));
2016 void gfc_push_error (gfc_error_buf *);
2017 void gfc_pop_error (gfc_error_buf *);
2018 void gfc_free_error (gfc_error_buf *);
2020 void gfc_status (const char *, ...) ATTRIBUTE_PRINTF_1;
2021 void gfc_status_char (char);
2023 void gfc_get_errors (int *, int *);
2026 void gfc_arith_init_1 (void);
2027 void gfc_arith_done_1 (void);
2028 gfc_expr *gfc_enum_initializer (gfc_expr *, locus);
2029 arith gfc_check_integer_range (mpz_t p, int kind);
2032 try gfc_validate_c_kind (gfc_typespec *);
2033 try gfc_check_any_c_kind (gfc_typespec *);
2034 int gfc_validate_kind (bt, int, bool);
2035 extern int gfc_index_integer_kind;
2036 extern int gfc_default_integer_kind;
2037 extern int gfc_max_integer_kind;
2038 extern int gfc_default_real_kind;
2039 extern int gfc_default_double_kind;
2040 extern int gfc_default_character_kind;
2041 extern int gfc_default_logical_kind;
2042 extern int gfc_default_complex_kind;
2043 extern int gfc_c_int_kind;
2044 extern int gfc_intio_kind;
2045 extern int gfc_charlen_int_kind;
2046 extern int gfc_numeric_storage_size;
2047 extern int gfc_character_storage_size;
2050 void gfc_clear_new_implicit (void);
2051 try gfc_add_new_implicit_range (int, int);
2052 try gfc_merge_new_implicit (gfc_typespec *);
2053 void gfc_set_implicit_none (void);
2054 void gfc_check_function_type (gfc_namespace *);
2055 bool gfc_is_intrinsic_typename (const char *);
2057 gfc_typespec *gfc_get_default_type (gfc_symbol *, gfc_namespace *);
2058 try gfc_set_default_type (gfc_symbol *, int, gfc_namespace *);
2060 void gfc_set_component_attr (gfc_component *, symbol_attribute *);
2061 void gfc_get_component_attr (symbol_attribute *, gfc_component *);
2063 void gfc_set_sym_referenced (gfc_symbol *);
2065 try gfc_add_attribute (symbol_attribute *, locus *);
2066 try gfc_add_allocatable (symbol_attribute *, locus *);
2067 try gfc_add_dimension (symbol_attribute *, const char *, locus *);
2068 try gfc_add_external (symbol_attribute *, locus *);
2069 try gfc_add_intrinsic (symbol_attribute *, locus *);
2070 try gfc_add_optional (symbol_attribute *, locus *);
2071 try gfc_add_pointer (symbol_attribute *, locus *);
2072 try gfc_add_cray_pointer (symbol_attribute *, locus *);
2073 try gfc_add_cray_pointee (symbol_attribute *, locus *);
2074 try gfc_mod_pointee_as (gfc_array_spec *);
2075 try gfc_add_protected (symbol_attribute *, const char *, locus *);
2076 try gfc_add_result (symbol_attribute *, const char *, locus *);
2077 try gfc_add_save (symbol_attribute *, const char *, locus *);
2078 try gfc_add_threadprivate (symbol_attribute *, const char *, locus *);
2079 try gfc_add_saved_common (symbol_attribute *, locus *);
2080 try gfc_add_target (symbol_attribute *, locus *);
2081 try gfc_add_dummy (symbol_attribute *, const char *, locus *);
2082 try gfc_add_generic (symbol_attribute *, const char *, locus *);
2083 try gfc_add_common (symbol_attribute *, locus *);
2084 try gfc_add_in_common (symbol_attribute *, const char *, locus *);
2085 try gfc_add_in_equivalence (symbol_attribute *, const char *, locus *);
2086 try gfc_add_data (symbol_attribute *, const char *, locus *);
2087 try gfc_add_in_namelist (symbol_attribute *, const char *, locus *);
2088 try gfc_add_sequence (symbol_attribute *, const char *, locus *);
2089 try gfc_add_elemental (symbol_attribute *, locus *);
2090 try gfc_add_pure (symbol_attribute *, locus *);
2091 try gfc_add_recursive (symbol_attribute *, locus *);
2092 try gfc_add_function (symbol_attribute *, const char *, locus *);
2093 try gfc_add_subroutine (symbol_attribute *, const char *, locus *);
2094 try gfc_add_volatile (symbol_attribute *, const char *, locus *);
2096 try gfc_add_access (symbol_attribute *, gfc_access, const char *, locus *);
2097 try gfc_add_is_bind_c(symbol_attribute *, const char *, locus *, int);
2098 try gfc_add_value (symbol_attribute *, const char *, locus *);
2099 try gfc_add_flavor (symbol_attribute *, sym_flavor, const char *, locus *);
2100 try gfc_add_entry (symbol_attribute *, const char *, locus *);
2101 try gfc_add_procedure (symbol_attribute *, procedure_type,
2102 const char *, locus *);
2103 try gfc_add_intent (symbol_attribute *, sym_intent, locus *);
2104 try gfc_add_explicit_interface (gfc_symbol *, ifsrc,
2105 gfc_formal_arglist *, locus *);
2106 try gfc_add_type (gfc_symbol *, gfc_typespec *, locus *);
2108 void gfc_clear_attr (symbol_attribute *);
2109 try gfc_missing_attr (symbol_attribute *, locus *);
2110 try gfc_copy_attr (symbol_attribute *, symbol_attribute *, locus *);
2112 try gfc_add_component (gfc_symbol *, const char *, gfc_component **);
2113 gfc_symbol *gfc_use_derived (gfc_symbol *);
2114 gfc_symtree *gfc_use_derived_tree (gfc_symtree *);
2115 gfc_component *gfc_find_component (gfc_symbol *, const char *);
2117 gfc_st_label *gfc_get_st_label (int);
2118 void gfc_free_st_label (gfc_st_label *);
2119 void gfc_define_st_label (gfc_st_label *, gfc_sl_type, locus *);
2120 try gfc_reference_st_label (gfc_st_label *, gfc_sl_type);
2122 gfc_expr * gfc_lval_expr_from_sym (gfc_symbol *);
2124 gfc_namespace *gfc_get_namespace (gfc_namespace *, int);
2125 gfc_symtree *gfc_new_symtree (gfc_symtree **, const char *);
2126 gfc_symtree *gfc_find_symtree (gfc_symtree *, const char *);
2127 gfc_symtree *gfc_get_unique_symtree (gfc_namespace *);
2128 gfc_user_op *gfc_get_uop (const char *);
2129 gfc_user_op *gfc_find_uop (const char *, gfc_namespace *);
2130 void gfc_free_symbol (gfc_symbol *);
2131 gfc_symbol *gfc_new_symbol (const char *, gfc_namespace *);
2132 int gfc_find_symbol (const char *, gfc_namespace *, int, gfc_symbol **);
2133 int gfc_find_sym_tree (const char *, gfc_namespace *, int, gfc_symtree **);
2134 int gfc_get_symbol (const char *, gfc_namespace *, gfc_symbol **);
2135 try verify_c_interop (gfc_typespec *, const char *name, locus *where);
2136 try verify_c_interop_param (gfc_symbol *);
2137 try verify_bind_c_sym (gfc_symbol *, gfc_typespec *, int, gfc_common_head *);
2138 try verify_bind_c_derived_type (gfc_symbol *);
2139 try verify_com_block_vars_c_interop (gfc_common_head *);
2140 void generate_isocbinding_symbol (const char *, iso_c_binding_symbol, const char *);
2141 gfc_symbol *get_iso_c_sym (gfc_symbol *, char *, char *, int);
2142 int gfc_get_sym_tree (const char *, gfc_namespace *, gfc_symtree **);
2143 int gfc_get_ha_symbol (const char *, gfc_symbol **);
2144 int gfc_get_ha_sym_tree (const char *, gfc_symtree **);
2146 int gfc_symbols_could_alias (gfc_symbol *, gfc_symbol *);
2148 void gfc_undo_symbols (void);
2149 void gfc_commit_symbols (void);
2150 void gfc_commit_symbol (gfc_symbol *);
2151 void gfc_free_namespace (gfc_namespace *);
2153 void gfc_symbol_init_2 (void);
2154 void gfc_symbol_done_2 (void);
2156 void gfc_traverse_symtree (gfc_symtree *, void (*)(gfc_symtree *));
2157 void gfc_traverse_ns (gfc_namespace *, void (*)(gfc_symbol *));
2158 void gfc_traverse_user_op (gfc_namespace *, void (*)(gfc_user_op *));
2159 void gfc_save_all (gfc_namespace *);
2161 void gfc_symbol_state (void);
2163 gfc_gsymbol *gfc_get_gsymbol (const char *);
2164 gfc_gsymbol *gfc_find_gsymbol (gfc_gsymbol *, const char *);
2167 extern int gfc_init_expr;
2169 /* Given a symbol that we have decided is intrinsic, mark it as such
2170 by placing it into a special module that is otherwise impossible to
2173 #define gfc_intrinsic_symbol(SYM) SYM->module = gfc_get_string ("(intrinsic)")
2175 void gfc_intrinsic_init_1 (void);
2176 void gfc_intrinsic_done_1 (void);
2178 char gfc_type_letter (bt);
2179 gfc_symbol * gfc_get_intrinsic_sub_symbol (const char *);
2180 try gfc_convert_type (gfc_expr *, gfc_typespec *, int);
2181 try gfc_convert_type_warn (gfc_expr *, gfc_typespec *, int, int);
2182 int gfc_generic_intrinsic (const char *);
2183 int gfc_specific_intrinsic (const char *);
2184 int gfc_intrinsic_name (const char *, int);
2185 int gfc_intrinsic_actual_ok (const char *, const bool);
2186 gfc_intrinsic_sym *gfc_find_function (const char *);
2187 gfc_intrinsic_sym *gfc_find_subroutine (const char *);
2189 match gfc_intrinsic_func_interface (gfc_expr *, int);
2190 match gfc_intrinsic_sub_interface (gfc_code *, int);
2192 /* match.c -- FIXME */
2193 void gfc_free_iterator (gfc_iterator *, int);
2194 void gfc_free_forall_iterator (gfc_forall_iterator *);
2195 void gfc_free_alloc_list (gfc_alloc *);
2196 void gfc_free_namelist (gfc_namelist *);
2197 void gfc_free_equiv (gfc_equiv *);
2198 void gfc_free_data (gfc_data *);
2199 void gfc_free_case_list (gfc_case *);
2201 /* matchexp.c -- FIXME too? */
2202 gfc_expr *gfc_get_parentheses (gfc_expr *);
2205 void gfc_free_omp_clauses (gfc_omp_clauses *);
2206 void gfc_resolve_omp_directive (gfc_code *, gfc_namespace *);
2207 void gfc_resolve_do_iterator (gfc_code *, gfc_symbol *);
2208 void gfc_resolve_omp_parallel_blocks (gfc_code *, gfc_namespace *);
2209 void gfc_resolve_omp_do_blocks (gfc_code *, gfc_namespace *);
2212 void gfc_free_actual_arglist (gfc_actual_arglist *);
2213 gfc_actual_arglist *gfc_copy_actual_arglist (gfc_actual_arglist *);
2214 const char *gfc_extract_int (gfc_expr *, int *);
2215 gfc_expr *gfc_expr_to_initialize (gfc_expr *);
2217 gfc_expr *gfc_build_conversion (gfc_expr *);
2218 void gfc_free_ref_list (gfc_ref *);
2219 void gfc_type_convert_binary (gfc_expr *);
2220 int gfc_is_constant_expr (gfc_expr *);
2221 try gfc_simplify_expr (gfc_expr *, int);
2222 int gfc_has_vector_index (gfc_expr *);
2224 gfc_expr *gfc_get_expr (void);
2225 void gfc_free_expr (gfc_expr *);
2226 void gfc_replace_expr (gfc_expr *, gfc_expr *);
2227 gfc_expr *gfc_int_expr (int);
2228 gfc_expr *gfc_logical_expr (int, locus *);
2229 mpz_t *gfc_copy_shape (mpz_t *, int);
2230 mpz_t *gfc_copy_shape_excluding (mpz_t *, int, gfc_expr *);
2231 gfc_expr *gfc_copy_expr (gfc_expr *);
2233 try gfc_specification_expr (gfc_expr *);
2235 int gfc_numeric_ts (gfc_typespec *);
2236 int gfc_kind_max (gfc_expr *, gfc_expr *);
2238 try gfc_check_conformance (const char *, gfc_expr *, gfc_expr *);
2239 try gfc_check_assign (gfc_expr *, gfc_expr *, int);
2240 try gfc_check_pointer_assign (gfc_expr *, gfc_expr *);
2241 try gfc_check_assign_symbol (gfc_symbol *, gfc_expr *);
2243 gfc_expr *gfc_default_initializer (gfc_typespec *);
2244 gfc_expr *gfc_get_variable_expr (gfc_symtree *);
2246 void gfc_expr_set_symbols_referenced (gfc_expr *);
2249 extern gfc_code new_st;
2251 void gfc_clear_new_st (void);
2252 gfc_code *gfc_get_code (void);
2253 gfc_code *gfc_append_code (gfc_code *, gfc_code *);
2254 void gfc_free_statement (gfc_code *);
2255 void gfc_free_statements (gfc_code *);
2258 try gfc_resolve_expr (gfc_expr *);
2259 void gfc_resolve (gfc_namespace *);
2260 void gfc_resolve_blocks (gfc_code *, gfc_namespace *);
2261 int gfc_impure_variable (gfc_symbol *);
2262 int gfc_pure (gfc_symbol *);
2263 int gfc_elemental (gfc_symbol *);
2264 try gfc_resolve_iterator (gfc_iterator *, bool);
2265 try gfc_resolve_index (gfc_expr *, int);
2266 try gfc_resolve_dim_arg (gfc_expr *);
2267 int gfc_is_formal_arg (void);
2268 match gfc_iso_c_sub_interface(gfc_code *, gfc_symbol *);
2272 void gfc_free_array_spec (gfc_array_spec *);
2273 gfc_array_ref *gfc_copy_array_ref (gfc_array_ref *);
2275 try gfc_set_array_spec (gfc_symbol *, gfc_array_spec *, locus *);
2276 gfc_array_spec *gfc_copy_array_spec (gfc_array_spec *);
2277 try gfc_resolve_array_spec (gfc_array_spec *, int);
2279 int gfc_compare_array_spec (gfc_array_spec *, gfc_array_spec *);
2281 gfc_expr *gfc_start_constructor (bt, int, locus *);
2282 void gfc_append_constructor (gfc_expr *, gfc_expr *);
2283 void gfc_free_constructor (gfc_constructor *);
2284 void gfc_simplify_iterator_var (gfc_expr *);
2285 try gfc_expand_constructor (gfc_expr *);
2286 int gfc_constant_ac (gfc_expr *);
2287 int gfc_expanded_ac (gfc_expr *);
2288 void gfc_resolve_character_array_constructor (gfc_expr *);
2289 try gfc_resolve_array_constructor (gfc_expr *);
2290 try gfc_check_constructor_type (gfc_expr *);
2291 try gfc_check_iter_variable (gfc_expr *);
2292 try gfc_check_constructor (gfc_expr *, try (*)(gfc_expr *));
2293 gfc_constructor *gfc_copy_constructor (gfc_constructor *);
2294 gfc_expr *gfc_get_array_element (gfc_expr *, int);
2295 try gfc_array_size (gfc_expr *, mpz_t *);
2296 try gfc_array_dimen_size (gfc_expr *, int, mpz_t *);
2297 try gfc_array_ref_shape (gfc_array_ref *, mpz_t *);
2298 gfc_array_ref *gfc_find_array_ref (gfc_expr *);
2299 void gfc_insert_constructor (gfc_expr *, gfc_constructor *);
2300 gfc_constructor *gfc_get_constructor (void);
2301 tree gfc_conv_array_initializer (tree type, gfc_expr *);
2302 try spec_size (gfc_array_spec *, mpz_t *);
2303 try spec_dimen_size (gfc_array_spec *, int, mpz_t *);
2304 int gfc_is_compile_time_shape (gfc_array_spec *);
2306 /* interface.c -- FIXME: some of these should be in symbol.c */
2307 void gfc_free_interface (gfc_interface *);
2308 int gfc_compare_derived_types (gfc_symbol *, gfc_symbol *);
2309 int gfc_compare_types (gfc_typespec *, gfc_typespec *);
2310 void gfc_check_interfaces (gfc_namespace *);
2311 void gfc_procedure_use (gfc_symbol *, gfc_actual_arglist **, locus *);
2312 gfc_symbol *gfc_search_interface (gfc_interface *, int,
2313 gfc_actual_arglist **);
2314 try gfc_extend_expr (gfc_expr *);
2315 void gfc_free_formal_arglist (gfc_formal_arglist *);
2316 try gfc_extend_assign (gfc_code *, gfc_namespace *);
2317 try gfc_add_interface (gfc_symbol *);
2320 extern gfc_st_label format_asterisk;
2322 void gfc_free_open (gfc_open *);
2323 try gfc_resolve_open (gfc_open *);
2324 void gfc_free_close (gfc_close *);
2325 try gfc_resolve_close (gfc_close *);
2326 void gfc_free_filepos (gfc_filepos *);
2327 try gfc_resolve_filepos (gfc_filepos *);
2328 void gfc_free_inquire (gfc_inquire *);
2329 try gfc_resolve_inquire (gfc_inquire *);
2330 void gfc_free_dt (gfc_dt *);
2331 try gfc_resolve_dt (gfc_dt *);
2334 void gfc_module_init_2 (void);
2335 void gfc_module_done_2 (void);
2336 void gfc_dump_module (const char *, int);
2337 bool gfc_check_access (gfc_access, gfc_access);
2340 symbol_attribute gfc_variable_attr (gfc_expr *, gfc_typespec *);
2341 symbol_attribute gfc_expr_attr (gfc_expr *);
2342 match gfc_match_rvalue (gfc_expr **);
2345 void gfc_generate_code (gfc_namespace *);
2346 void gfc_generate_module_code (gfc_namespace *);
2349 typedef int (*compare_fn) (void *, void *);
2350 void gfc_insert_bbt (void *, void *, compare_fn);
2351 void gfc_delete_bbt (void *, void *, compare_fn);
2353 /* dump-parse-tree.c */
2354 void gfc_show_actual_arglist (gfc_actual_arglist *);
2355 void gfc_show_array_ref (gfc_array_ref *);
2356 void gfc_show_array_spec (gfc_array_spec *);
2357 void gfc_show_attr (symbol_attribute *);
2358 void gfc_show_code (int, gfc_code *);
2359 void gfc_show_components (gfc_symbol *);
2360 void gfc_show_constructor (gfc_constructor *);
2361 void gfc_show_equiv (gfc_equiv *);
2362 void gfc_show_expr (gfc_expr *);
2363 void gfc_show_namelist (gfc_namelist *);
2364 void gfc_show_namespace (gfc_namespace *);
2365 void gfc_show_ref (gfc_ref *);
2366 void gfc_show_symbol (gfc_symbol *);
2367 void gfc_show_typespec (gfc_typespec *);
2370 try gfc_parse_file (void);
2371 void global_used (gfc_gsymbol *, locus *);
2374 int gfc_dep_compare_expr (gfc_expr *, gfc_expr *);
2376 #endif /* GCC_GFORTRAN_H */