1 /* gfortran header file
2 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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. */
31 /* Declarations common to the front-end and library are put in
32 libgfortran/libgfortran_frontend.h */
33 #include "libgfortran.h"
38 #include "coretypes.h"
40 #include "splay-tree.h"
41 /* The following ifdefs are recommended by the autoconf documentation
42 for any code using alloca. */
44 /* AIX requires this to be the first thing in the file. */
46 #else /* not __GNUC__ */
49 #else /* do not HAVE_ALLOCA_H */
53 #ifndef alloca /* predefined by HP cc +Olibcalls */
55 #endif /* not predefined */
57 #endif /* do not HAVE_ALLOCA_H */
58 #endif /* not __GNUC__ */
60 /* Major control parameters. */
62 #define GFC_MAX_SYMBOL_LEN 63 /* Must be at least 63 for F2003. */
63 #define GFC_MAX_BINDING_LABEL_LEN 126 /* (2 * GFC_MAX_SYMBOL_LEN) */
64 #define GFC_MAX_LINE 132 /* Characters beyond this are not seen. */
65 #define GFC_LETTERS 26 /* Number of letters in the alphabet. */
67 #define MAX_SUBRECORD_LENGTH 2147483639 /* 2**31-9 */
70 #define free(x) Use_gfc_free_instead_of_free()
71 #define gfc_is_whitespace(c) ((c==' ') || (c=='\t'))
74 #define NULL ((void *) 0)
78 #define stringize(x) expand_macro(x)
79 #define expand_macro(x) # x
81 /* For a the runtime library, a standard prefix is a requirement to
82 avoid cluttering the namespace with things nobody asked for. It's
83 ugly to look at and a pain to type when you add the prefix by hand,
84 so we hide it behind a macro. */
85 #define PREFIX(x) "_gfortran_" x
88 #define BLANK_COMMON_NAME "__BLNK__"
90 /* Macro to initialize an mstring structure. */
91 #define minit(s, t) { s, NULL, t }
93 /* Structure for storing strings to be matched by gfc_match_string. */
104 /*************************** Enums *****************************/
106 /* Used when matching and resolving data I/O transfer statements. */
109 { M_READ, M_WRITE, M_PRINT, M_INQUIRE }
112 /* The author remains confused to this day about the convention of
113 returning '0' for 'SUCCESS'... or was it the other way around? The
114 following enum makes things much more readable. We also start
115 values off at one instead of zero. */
118 { SUCCESS = 1, FAILURE }
121 /* This is returned by gfc_notification_std to know if, given the flags
122 that were given (-std=, -pedantic) we should issue an error, a warning
126 { SILENT, WARNING, ERROR }
129 /* Matchers return one of these three values. The difference between
130 MATCH_NO and MATCH_ERROR is that MATCH_ERROR means that a match was
131 successful, but that something non-syntactic is wrong and an error
132 has already been issued. */
135 { MATCH_NO = 1, MATCH_YES, MATCH_ERROR }
139 { FORM_FREE, FORM_FIXED, FORM_UNKNOWN }
142 /* Basic types. BT_VOID is used by ISO C Binding so funcs like c_f_pointer
143 can take any arg with the pointer attribute as a param. */
145 { BT_UNKNOWN = 1, BT_INTEGER, BT_REAL, BT_COMPLEX,
146 BT_LOGICAL, BT_CHARACTER, BT_DERIVED, BT_PROCEDURE, BT_HOLLERITH,
151 /* Expression node types. */
153 { EXPR_OP = 1, EXPR_FUNCTION, EXPR_CONSTANT, EXPR_VARIABLE,
154 EXPR_SUBSTRING, EXPR_STRUCTURE, EXPR_ARRAY, EXPR_NULL
160 { AS_EXPLICIT = 1, AS_ASSUMED_SHAPE, AS_DEFERRED,
161 AS_ASSUMED_SIZE, AS_UNKNOWN
166 { AR_FULL = 1, AR_ELEMENT, AR_SECTION, AR_UNKNOWN }
169 /* Statement label types. */
171 { ST_LABEL_UNKNOWN = 1, ST_LABEL_TARGET,
172 ST_LABEL_BAD_TARGET, ST_LABEL_FORMAT
176 /* Intrinsic operators. */
178 { GFC_INTRINSIC_BEGIN = 0,
179 INTRINSIC_NONE = -1, INTRINSIC_UPLUS = GFC_INTRINSIC_BEGIN,
180 INTRINSIC_UMINUS, INTRINSIC_PLUS, INTRINSIC_MINUS, INTRINSIC_TIMES,
181 INTRINSIC_DIVIDE, INTRINSIC_POWER, INTRINSIC_CONCAT,
182 INTRINSIC_AND, INTRINSIC_OR, INTRINSIC_EQV, INTRINSIC_NEQV,
183 /* ==, /=, >, >=, <, <= */
184 INTRINSIC_EQ, INTRINSIC_NE, INTRINSIC_GT, INTRINSIC_GE,
185 INTRINSIC_LT, INTRINSIC_LE,
186 /* .EQ., .NE., .GT., .GE., .LT., .LE. (OS = Old-Style) */
187 INTRINSIC_EQ_OS, INTRINSIC_NE_OS, INTRINSIC_GT_OS, INTRINSIC_GE_OS,
188 INTRINSIC_LT_OS, INTRINSIC_LE_OS,
189 INTRINSIC_NOT, INTRINSIC_USER, INTRINSIC_ASSIGN,
190 INTRINSIC_PARENTHESES, GFC_INTRINSIC_END /* Sentinel */
195 /* This macro is the number of intrinsic operators that exist.
196 Assumptions are made about the numbering of the interface_op enums. */
197 #define GFC_INTRINSIC_OPS GFC_INTRINSIC_END
199 /* Arithmetic results. */
201 { ARITH_OK = 1, ARITH_OVERFLOW, ARITH_UNDERFLOW, ARITH_NAN,
202 ARITH_DIV0, ARITH_INCOMMENSURATE, ARITH_ASYMMETRIC
209 ST_ARITHMETIC_IF, ST_ALLOCATE, ST_ATTR_DECL, ST_BACKSPACE, ST_BLOCK_DATA,
210 ST_CALL, ST_CASE, ST_CLOSE, ST_COMMON, ST_CONTINUE, ST_CONTAINS, ST_CYCLE,
211 ST_DATA, ST_DATA_DECL, ST_DEALLOCATE, ST_DO, ST_ELSE, ST_ELSEIF,
212 ST_ELSEWHERE, ST_END_BLOCK_DATA, ST_ENDDO, ST_IMPLIED_ENDDO,
213 ST_END_FILE, ST_FLUSH, ST_END_FORALL, ST_END_FUNCTION, ST_ENDIF,
214 ST_END_INTERFACE, ST_END_MODULE, ST_END_PROGRAM, ST_END_SELECT,
215 ST_END_SUBROUTINE, ST_END_WHERE, ST_END_TYPE, ST_ENTRY, ST_EQUIVALENCE,
216 ST_EXIT, ST_FORALL, ST_FORALL_BLOCK, ST_FORMAT, ST_FUNCTION, ST_GOTO,
217 ST_IF_BLOCK, ST_IMPLICIT, ST_IMPLICIT_NONE, ST_IMPORT, ST_INQUIRE, ST_INTERFACE,
218 ST_PARAMETER, ST_MODULE, ST_MODULE_PROC, ST_NAMELIST, ST_NULLIFY, ST_OPEN,
219 ST_PAUSE, ST_PRIVATE, ST_PROGRAM, ST_PUBLIC, ST_READ, ST_RETURN, ST_REWIND,
220 ST_STOP, ST_SUBROUTINE, ST_TYPE, ST_USE, ST_WHERE_BLOCK, ST_WHERE, ST_WAIT,
221 ST_WRITE, ST_ASSIGNMENT, ST_POINTER_ASSIGNMENT, ST_SELECT_CASE, ST_SEQUENCE,
222 ST_SIMPLE_IF, ST_STATEMENT_FUNCTION, ST_DERIVED_DECL, ST_LABEL_ASSIGNMENT,
223 ST_ENUM, ST_ENUMERATOR, ST_END_ENUM,
224 ST_OMP_ATOMIC, ST_OMP_BARRIER, ST_OMP_CRITICAL, ST_OMP_END_CRITICAL,
225 ST_OMP_END_DO, ST_OMP_END_MASTER, ST_OMP_END_ORDERED, ST_OMP_END_PARALLEL,
226 ST_OMP_END_PARALLEL_DO, ST_OMP_END_PARALLEL_SECTIONS,
227 ST_OMP_END_PARALLEL_WORKSHARE, ST_OMP_END_SECTIONS, ST_OMP_END_SINGLE,
228 ST_OMP_END_WORKSHARE, ST_OMP_DO, ST_OMP_FLUSH, ST_OMP_MASTER, ST_OMP_ORDERED,
229 ST_OMP_PARALLEL, ST_OMP_PARALLEL_DO, ST_OMP_PARALLEL_SECTIONS,
230 ST_OMP_PARALLEL_WORKSHARE, ST_OMP_SECTIONS, ST_OMP_SECTION, ST_OMP_SINGLE,
231 ST_OMP_THREADPRIVATE, ST_OMP_WORKSHARE, ST_PROCEDURE,
232 ST_GET_FCN_CHARACTERISTICS, ST_NONE
237 /* Types of interfaces that we can have. Assignment interfaces are
238 considered to be intrinsic operators. */
241 INTERFACE_NAMELESS = 1, INTERFACE_GENERIC,
242 INTERFACE_INTRINSIC_OP, INTERFACE_USER_OP, INTERFACE_ABSTRACT
246 /* Symbol flavors: these are all mutually exclusive.
247 10 elements = 4 bits. */
248 typedef enum sym_flavor
250 FL_UNKNOWN = 0, FL_PROGRAM, FL_BLOCK_DATA, FL_MODULE, FL_VARIABLE,
251 FL_PARAMETER, FL_LABEL, FL_PROCEDURE, FL_DERIVED, FL_NAMELIST,
256 /* Procedure types. 7 elements = 3 bits. */
257 typedef enum procedure_type
258 { PROC_UNKNOWN, PROC_MODULE, PROC_INTERNAL, PROC_DUMMY,
259 PROC_INTRINSIC, PROC_ST_FUNCTION, PROC_EXTERNAL
264 typedef enum sym_intent
265 { INTENT_UNKNOWN = 0, INTENT_IN, INTENT_OUT, INTENT_INOUT
270 typedef enum gfc_access
271 { ACCESS_UNKNOWN = 0, ACCESS_PUBLIC, ACCESS_PRIVATE
275 /* Flags to keep track of where an interface came from.
276 4 elements = 2 bits. */
278 { IFSRC_UNKNOWN = 0, IFSRC_DECL, IFSRC_IFBODY, IFSRC_USAGE
282 /* Whether a SAVE attribute was set explicitly or implicitly. */
283 typedef enum save_state
284 { SAVE_NONE = 0, SAVE_EXPLICIT, SAVE_IMPLICIT
288 /* Strings for all symbol attributes. We use these for dumping the
289 parse tree, in error messages, and also when reading and writing
290 modules. In symbol.c. */
291 extern const mstring flavors[];
292 extern const mstring procedures[];
293 extern const mstring intents[];
294 extern const mstring access_types[];
295 extern const mstring ifsrc_types[];
296 extern const mstring save_status[];
298 /* Enumeration of all the generic intrinsic functions. Used by the
299 backend for identification of a function. */
303 /* GFC_ISYM_NONE is used for intrinsics which will never be seen by
304 the backend (eg. KIND). */
335 GFC_ISYM_COMMAND_ARGUMENT_COUNT,
345 GFC_ISYM_DATE_AND_TIME,
349 GFC_ISYM_DOT_PRODUCT,
356 GFC_ISYM_ERFC_SCALED,
377 GFC_ISYM_GET_COMMAND,
378 GFC_ISYM_GET_COMMAND_ARGUMENT,
381 GFC_ISYM_GET_ENVIRONMENT_VARIABLE,
407 GFC_ISYM_IS_IOSTAT_END,
408 GFC_ISYM_IS_IOSTAT_EOR,
438 GFC_ISYM_MAXEXPONENT,
445 GFC_ISYM_MINEXPONENT,
465 GFC_ISYM_RANDOM_NUMBER,
466 GFC_ISYM_RANDOM_SEED,
479 GFC_ISYM_SET_EXPONENT,
499 GFC_ISYM_SYSTEM_CLOCK,
519 typedef enum gfc_isym_id gfc_isym_id;
524 GFC_INIT_REAL_OFF = 0,
528 GFC_INIT_REAL_NEG_INF
534 GFC_INIT_LOGICAL_OFF = 0,
535 GFC_INIT_LOGICAL_FALSE,
536 GFC_INIT_LOGICAL_TRUE
542 GFC_INIT_CHARACTER_OFF = 0,
543 GFC_INIT_CHARACTER_ON
545 init_local_character;
549 GFC_INIT_INTEGER_OFF = 0,
554 /************************* Structures *****************************/
556 /* Used for keeping things in balanced binary trees. */
557 #define BBT_HEADER(self) int priority; struct self *left, *right
559 #define NAMED_INTCST(a,b,c) a,
562 ISOFORTRANENV_INVALID = -1,
563 #include "iso-fortran-env.def"
564 ISOFORTRANENV_LAST, ISOFORTRANENV_NUMBER = ISOFORTRANENV_LAST
566 iso_fortran_env_symbol;
569 #define NAMED_INTCST(a,b,c) a,
570 #define NAMED_REALCST(a,b,c) a,
571 #define NAMED_CMPXCST(a,b,c) a,
572 #define NAMED_LOGCST(a,b,c) a,
573 #define NAMED_CHARKNDCST(a,b,c) a,
574 #define NAMED_CHARCST(a,b,c) a,
575 #define DERIVED_TYPE(a,b,c) a,
576 #define PROCEDURE(a,b) a,
579 ISOCBINDING_INVALID = -1,
580 #include "iso-c-binding.def"
582 ISOCBINDING_NUMBER = ISOCBINDING_LAST
584 iso_c_binding_symbol;
589 #undef NAMED_CHARKNDCST
596 INTMOD_NONE = 0, INTMOD_ISO_FORTRAN_ENV, INTMOD_ISO_C_BINDING
602 char name[GFC_MAX_SYMBOL_LEN + 1];
603 int value; /* Used for both integer and character values. */
608 /* Array of structs, where the structs represent the C interop kinds.
609 The list will be implemented based on a hash of the kind name since
610 these could be accessed multiple times.
611 Declared in trans-types.c as a global, since it's in that file
612 that the list is initialized. */
613 extern CInteropKind_t c_interop_kinds_table[];
615 /* Symbol attribute structure. */
618 /* Variable attributes. */
619 unsigned allocatable:1, dimension:1, external:1, intrinsic:1,
620 optional:1, pointer:1, target:1, value:1, volatile_:1,
621 dummy:1, result:1, assign:1, threadprivate:1, not_always_present:1,
622 implied_index:1, subref_array_pointer:1;
624 ENUM_BITFIELD (save_state) save:2;
626 unsigned data:1, /* Symbol is named in a DATA statement. */
627 protected:1, /* Symbol has been marked as protected. */
628 use_assoc:1, /* Symbol has been use-associated. */
629 use_only:1, /* Symbol has been use-associated, with ONLY. */
630 use_rename:1, /* Symbol has been use-associated and renamed. */
631 imported:1; /* Symbol has been associated by IMPORT. */
633 unsigned in_namelist:1, in_common:1, in_equivalence:1;
634 unsigned function:1, subroutine:1, procedure:1;
635 unsigned generic:1, generic_copy:1;
636 unsigned implicit_type:1; /* Type defined via implicit rules. */
637 unsigned untyped:1; /* No implicit type could be found. */
639 unsigned is_bind_c:1; /* say if is bound to C */
641 /* These flags are both in the typespec and attribute. The attribute
642 list is what gets read from/written to a module file. The typespec
643 is created from a decl being processed. */
644 unsigned is_c_interop:1; /* It's c interoperable. */
645 unsigned is_iso_c:1; /* Symbol is from iso_c_binding. */
647 /* Function/subroutine attributes */
648 unsigned sequence:1, elemental:1, pure:1, recursive:1;
649 unsigned unmaskable:1, masked:1, contained:1, mod_proc:1, abstract:1;
651 /* This is set if the subroutine doesn't return. Currently, this
652 is only possible for intrinsic subroutines. */
655 /* Set if this procedure is an alternate entry point. These procedures
656 don't have any code associated, and the backend will turn them into
657 thunks to the master function. */
660 /* Set if this is the master function for a procedure with multiple
662 unsigned entry_master:1;
664 /* Set if this is the master function for a function with multiple
665 entry points where characteristics of the entry points differ. */
666 unsigned mixed_entry_master:1;
668 /* Set if a function must always be referenced by an explicit interface. */
669 unsigned always_explicit:1;
671 /* Set if the symbol has been referenced in an expression. No further
672 modification of type or type parameters is permitted. */
673 unsigned referenced:1;
675 /* Set if the symbol has ambiguous interfaces. */
676 unsigned ambiguous_interfaces:1;
678 /* Set if this is the symbol for the main program. */
679 unsigned is_main_program:1;
681 /* Mutually exclusive multibit attributes. */
682 ENUM_BITFIELD (gfc_access) access:2;
683 ENUM_BITFIELD (sym_intent) intent:2;
684 ENUM_BITFIELD (sym_flavor) flavor:4;
685 ENUM_BITFIELD (ifsrc) if_source:2;
687 ENUM_BITFIELD (procedure_type) proc:3;
689 /* Special attributes for Cray pointers, pointees. */
690 unsigned cray_pointer:1, cray_pointee:1;
692 /* The symbol is a derived type with allocatable components, pointer
693 components or private components, possibly nested. zer_comp
694 is true if the derived type has no component at all. */
695 unsigned alloc_comp:1, pointer_comp:1, private_comp:1, zero_comp:1;
697 /* The namespace where the VOLATILE attribute has been set. */
698 struct gfc_namespace *volatile_ns;
703 /* The following three structures are used to identify a location in
706 gfc_file is used to maintain a tree of the source files and how
707 they include each other
709 gfc_linebuf holds a single line of source code and information
710 which file it resides in
712 locus point to the sourceline and the character in the source
716 typedef struct gfc_file
718 struct gfc_file *next, *up;
719 int inclusion_line, line;
723 typedef struct gfc_linebuf
725 source_location location;
726 struct gfc_file *file;
727 struct gfc_linebuf *next;
735 #define gfc_linebuf_header_size (offsetof (gfc_linebuf, line))
737 #define gfc_linebuf_linenum(LBUF) (LOCATION_LINE ((LBUF)->location))
745 /* In order for the "gfc" format checking to work correctly, you must
746 have declared a typedef locus first. */
747 #if GCC_VERSION >= 4001
748 #define ATTRIBUTE_GCC_GFC(m, n) __attribute__ ((__format__ (__gcc_gfc__, m, n))) ATTRIBUTE_NONNULL(m)
750 #define ATTRIBUTE_GCC_GFC(m, n) ATTRIBUTE_NONNULL(m)
754 extern int gfc_suppress_error;
757 /* Character length structures hold the expression that gives the
758 length of a character variable. We avoid putting these into
759 gfc_typespec because doing so prevents us from doing structure
760 copies and forces us to deallocate any typespecs we create, as well
761 as structures that contain typespecs. They also can have multiple
762 character typespecs pointing to them.
764 These structures form a singly linked list within the current
765 namespace and are deallocated with the namespace. It is possible to
766 end up with gfc_charlen structures that have nothing pointing to them. */
768 typedef struct gfc_charlen
770 struct gfc_expr *length;
771 struct gfc_charlen *next;
778 #define gfc_get_charlen() gfc_getmem(sizeof(gfc_charlen))
780 /* Type specification structure. FIXME: derived and cl could be union??? */
785 struct gfc_symbol *derived;
786 gfc_charlen *cl; /* For character types only. */
787 struct gfc_symbol *interface; /* For PROCEDURE declarations. */
794 /* Array specification. */
797 int rank; /* A rank of zero means that a variable is a scalar. */
799 struct gfc_expr *lower[GFC_MAX_DIMENSIONS], *upper[GFC_MAX_DIMENSIONS];
801 /* These two fields are used with the Cray Pointer extension. */
802 bool cray_pointee; /* True iff this spec belongs to a cray pointee. */
803 bool cp_was_assumed; /* AS_ASSUMED_SIZE cp arrays are converted to
804 AS_EXPLICIT, but we want to remember that we
810 #define gfc_get_array_spec() gfc_getmem(sizeof(gfc_array_spec))
813 /* Components of derived types. */
814 typedef struct gfc_component
819 int pointer, allocatable, dimension;
825 struct gfc_expr *initializer;
826 struct gfc_component *next;
830 #define gfc_get_component() gfc_getmem(sizeof(gfc_component))
832 /* Formal argument lists are lists of symbols. */
833 typedef struct gfc_formal_arglist
835 /* Symbol representing the argument at this position in the arglist. */
836 struct gfc_symbol *sym;
837 /* Points to the next formal argument. */
838 struct gfc_formal_arglist *next;
842 #define gfc_get_formal_arglist() gfc_getmem(sizeof(gfc_formal_arglist))
845 /* The gfc_actual_arglist structure is for actual arguments. */
846 typedef struct gfc_actual_arglist
849 /* Alternate return label when the expr member is null. */
850 struct gfc_st_label *label;
852 /* This is set to the type of an eventual omitted optional
853 argument. This is used to determine if a hidden string length
854 argument has to be added to a function call. */
857 struct gfc_expr *expr;
858 struct gfc_actual_arglist *next;
862 #define gfc_get_actual_arglist() gfc_getmem(sizeof(gfc_actual_arglist))
865 /* Because a symbol can belong to multiple namelists, they must be
866 linked externally to the symbol itself. */
867 typedef struct gfc_namelist
869 struct gfc_symbol *sym;
870 struct gfc_namelist *next;
874 #define gfc_get_namelist() gfc_getmem(sizeof(gfc_namelist))
879 OMP_LIST_FIRSTPRIVATE,
880 OMP_LIST_LASTPRIVATE,
881 OMP_LIST_COPYPRIVATE,
885 OMP_LIST_REDUCTION_FIRST = OMP_LIST_PLUS,
897 OMP_LIST_REDUCTION_LAST = OMP_LIST_IEOR,
901 /* Because a symbol can belong to multiple namelists, they must be
902 linked externally to the symbol itself. */
903 typedef struct gfc_omp_clauses
905 struct gfc_expr *if_expr;
906 struct gfc_expr *num_threads;
907 gfc_namelist *lists[OMP_LIST_NUM];
916 struct gfc_expr *chunk_size;
924 bool nowait, ordered;
928 #define gfc_get_omp_clauses() gfc_getmem(sizeof(gfc_omp_clauses))
931 /* The gfc_st_label structure is a doubly linked list attached to a
932 namespace that records the usage of statement labels within that
934 /* TODO: Make format/statement specifics a union. */
935 typedef struct gfc_st_label
937 BBT_HEADER(gfc_st_label);
941 gfc_sl_type defined, referenced;
943 struct gfc_expr *format;
952 /* gfc_interface()-- Interfaces are lists of symbols strung together. */
953 typedef struct gfc_interface
955 struct gfc_symbol *sym;
957 struct gfc_interface *next;
961 #define gfc_get_interface() gfc_getmem(sizeof(gfc_interface))
964 /* User operator nodes. These are like stripped down symbols. */
969 gfc_interface *operator;
970 struct gfc_namespace *ns;
975 /* Symbol nodes. These are important things. They are what the
976 standard refers to as "entities". The possibly multiple names that
977 refer to the same entity are accomplished by a binary tree of
978 symtree structures that is balanced by the red-black method-- more
979 than one symtree node can point to any given symbol. */
981 typedef struct gfc_symbol
983 const char *name; /* Primary name, before renaming */
984 const char *module; /* Module this symbol came from */
988 symbol_attribute attr;
990 /* The formal member points to the formal argument list if the
991 symbol is a function or subroutine name. If the symbol is a
992 generic name, the generic member points to the list of
995 gfc_interface *generic;
996 gfc_access component_access;
998 gfc_formal_arglist *formal;
999 struct gfc_namespace *formal_ns;
1001 struct gfc_expr *value; /* Parameter/Initializer value */
1003 struct gfc_symbol *result; /* function result symbol */
1004 gfc_component *components; /* Derived type components */
1006 /* Defined only for Cray pointees; points to their pointer. */
1007 struct gfc_symbol *cp_pointer;
1009 struct gfc_symbol *common_next; /* Links for COMMON syms */
1011 /* This is in fact a gfc_common_head but it is only used for pointer
1012 comparisons to check if symbols are in the same common block. */
1013 struct gfc_common_head* common_head;
1015 /* Make sure setup code for dummy arguments is generated in the correct
1021 gfc_namelist *namelist, *namelist_tail;
1023 /* Change management fields. Symbols that might be modified by the
1024 current statement have the mark member nonzero and are kept in a
1025 singly linked list through the tlink field. Of these symbols,
1026 symbols with old_symbol equal to NULL are symbols created within
1027 the current statement. Otherwise, old_symbol points to a copy of
1030 struct gfc_symbol *old_symbol, *tlink;
1031 unsigned mark:1, new:1;
1032 /* Nonzero if all equivalences associated with this symbol have been
1034 unsigned equiv_built:1;
1035 /* Set if this variable is used as an index name in a FORALL. */
1036 unsigned forall_index:1;
1038 struct gfc_namespace *ns; /* namespace containing this symbol */
1042 /* Identity of the intrinsic module the symbol comes from, or
1043 INTMOD_NONE if it's not imported from a intrinsic module. */
1044 intmod_id from_intmod;
1045 /* Identity of the symbol from intrinsic modules, from enums maintained
1046 separately by each intrinsic module. Used together with from_intmod,
1047 it uniquely identifies a symbol from an intrinsic module. */
1050 /* This may be repetitive, since the typespec now has a binding
1052 char binding_label[GFC_MAX_BINDING_LABEL_LEN + 1];
1053 /* Store a reference to the common_block, if this symbol is in one. */
1054 struct gfc_common_head *common_block;
1059 /* This structure is used to keep track of symbols in common blocks. */
1060 typedef struct gfc_common_head
1063 char use_assoc, saved, threadprivate;
1064 char name[GFC_MAX_SYMBOL_LEN + 1];
1065 struct gfc_symbol *head;
1066 char binding_label[GFC_MAX_BINDING_LABEL_LEN + 1];
1071 #define gfc_get_common_head() gfc_getmem(sizeof(gfc_common_head))
1074 /* A list of all the alternate entry points for a procedure. */
1076 typedef struct gfc_entry_list
1078 /* The symbol for this entry point. */
1080 /* The zero-based id of this entry point. */
1082 /* The LABEL_EXPR marking this entry point. */
1084 /* The nest item in the list. */
1085 struct gfc_entry_list *next;
1089 #define gfc_get_entry_list() \
1090 (gfc_entry_list *) gfc_getmem(sizeof(gfc_entry_list))
1092 /* Within a namespace, symbols are pointed to by symtree nodes that
1093 are linked together in a balanced binary tree. There can be
1094 several symtrees pointing to the same symbol node via USE
1097 typedef struct gfc_symtree
1099 BBT_HEADER (gfc_symtree);
1104 gfc_symbol *sym; /* Symbol associated with this node */
1106 gfc_common_head *common;
1113 /* A linked list of derived types in the namespace. */
1114 typedef struct gfc_dt_list
1116 struct gfc_symbol *derived;
1117 struct gfc_dt_list *next;
1121 #define gfc_get_dt_list() gfc_getmem(sizeof(gfc_dt_list))
1123 /* A list of all derived types. */
1124 extern gfc_dt_list *gfc_derived_types;
1126 /* A namespace describes the contents of procedure, module or
1128 /* ??? Anything else use these? */
1130 typedef struct gfc_namespace
1132 /* Tree containing all the symbols in this namespace. */
1133 gfc_symtree *sym_root;
1134 /* Tree containing all the user-defined operators in the namespace. */
1135 gfc_symtree *uop_root;
1136 /* Tree containing all the common blocks. */
1137 gfc_symtree *common_root;
1139 /* If set_flag[letter] is set, an implicit type has been set for letter. */
1140 int set_flag[GFC_LETTERS];
1141 /* Keeps track of the implicit types associated with the letters. */
1142 gfc_typespec default_type[GFC_LETTERS];
1144 /* If this is a namespace of a procedure, this points to the procedure. */
1145 struct gfc_symbol *proc_name;
1146 /* If this is the namespace of a unit which contains executable
1147 code, this points to it. */
1148 struct gfc_code *code;
1150 /* Points to the equivalences set up in this namespace. */
1151 struct gfc_equiv *equiv;
1153 /* Points to the equivalence groups produced by trans_common. */
1154 struct gfc_equiv_list *equiv_lists;
1156 gfc_interface *operator[GFC_INTRINSIC_OPS];
1158 /* Points to the parent namespace, i.e. the namespace of a module or
1159 procedure in which the procedure belonging to this namespace is
1160 contained. The parent namespace points to this namespace either
1161 directly via CONTAINED, or indirectly via the chain built by
1163 struct gfc_namespace *parent;
1164 /* CONTAINED points to the first contained namespace. Sibling
1165 namespaces are chained via SIBLING. */
1166 struct gfc_namespace *contained, *sibling;
1168 gfc_common_head blank_common;
1169 gfc_access default_access, operator_access[GFC_INTRINSIC_OPS];
1171 gfc_st_label *st_labels;
1172 /* This list holds information about all the data initializers in
1174 struct gfc_data *data;
1176 gfc_charlen *cl_list;
1178 int save_all, seen_save, seen_implicit_none;
1180 /* Normally we don't need to refcount namespaces. However when we read
1181 a module containing a function with multiple entry points, this
1182 will appear as several functions with the same formal namespace. */
1185 /* A list of all alternate entry points to this procedure (or NULL). */
1186 gfc_entry_list *entries;
1188 /* Set to 1 if namespace is a BLOCK DATA program unit. */
1191 /* Set to 1 if namespace is an interface body with "IMPORT" used. */
1196 extern gfc_namespace *gfc_current_ns;
1198 /* Global symbols are symbols of global scope. Currently we only use
1199 this to detect collisions already when parsing.
1200 TODO: Extend to verify procedure calls. */
1202 typedef struct gfc_gsymbol
1204 BBT_HEADER(gfc_gsymbol);
1207 const char *sym_name;
1208 const char *mod_name;
1209 const char *binding_label;
1210 enum { GSYM_UNKNOWN=1, GSYM_PROGRAM, GSYM_FUNCTION, GSYM_SUBROUTINE,
1211 GSYM_MODULE, GSYM_COMMON, GSYM_BLOCK_DATA } type;
1218 extern gfc_gsymbol *gfc_gsym_root;
1220 /* Information on interfaces being built. */
1223 interface_type type;
1227 gfc_intrinsic_op op;
1231 extern gfc_interface_info current_interface;
1234 /* Array reference. */
1235 typedef struct gfc_array_ref
1238 int dimen; /* # of components in the reference */
1242 locus c_where[GFC_MAX_DIMENSIONS]; /* All expressions can be NULL */
1243 struct gfc_expr *start[GFC_MAX_DIMENSIONS], *end[GFC_MAX_DIMENSIONS],
1244 *stride[GFC_MAX_DIMENSIONS];
1247 { DIMEN_ELEMENT = 1, DIMEN_RANGE, DIMEN_VECTOR, DIMEN_UNKNOWN }
1248 dimen_type[GFC_MAX_DIMENSIONS];
1250 struct gfc_expr *offset;
1254 #define gfc_get_array_ref() gfc_getmem(sizeof(gfc_array_ref))
1257 /* Component reference nodes. A variable is stored as an expression
1258 node that points to the base symbol. After that, a singly linked
1259 list of component reference nodes gives the variable's complete
1260 resolution. The array_ref component may be present and comes
1261 before the component component. */
1264 { REF_ARRAY, REF_COMPONENT, REF_SUBSTRING }
1267 typedef struct gfc_ref
1273 struct gfc_array_ref ar;
1277 gfc_component *component;
1284 struct gfc_expr *start, *end; /* Substring */
1285 gfc_charlen *length;
1292 struct gfc_ref *next;
1296 #define gfc_get_ref() gfc_getmem(sizeof(gfc_ref))
1299 /* Structures representing intrinsic symbols and their arguments lists. */
1300 typedef struct gfc_intrinsic_arg
1302 char name[GFC_MAX_SYMBOL_LEN + 1];
1306 gfc_actual_arglist *actual;
1308 struct gfc_intrinsic_arg *next;
1314 /* Specifies the various kinds of check functions used to verify the
1315 argument lists of intrinsic functions. fX with X an integer refer
1316 to check functions of intrinsics with X arguments. f1m is used for
1317 the MAX and MIN intrinsics which can have an arbitrary number of
1318 arguments, f3ml is used for the MINLOC and MAXLOC intrinsics as
1319 these have special semantics. */
1324 try (*f1)(struct gfc_expr *);
1325 try (*f1m)(gfc_actual_arglist *);
1326 try (*f2)(struct gfc_expr *, struct gfc_expr *);
1327 try (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1328 try (*f3ml)(gfc_actual_arglist *);
1329 try (*f3red)(gfc_actual_arglist *);
1330 try (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1332 try (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1333 struct gfc_expr *, struct gfc_expr *);
1337 /* Like gfc_check_f, these specify the type of the simplification
1338 function associated with an intrinsic. The fX are just like in
1339 gfc_check_f. cc is used for type conversion functions. */
1343 struct gfc_expr *(*f0)(void);
1344 struct gfc_expr *(*f1)(struct gfc_expr *);
1345 struct gfc_expr *(*f2)(struct gfc_expr *, struct gfc_expr *);
1346 struct gfc_expr *(*f3)(struct gfc_expr *, struct gfc_expr *,
1348 struct gfc_expr *(*f4)(struct gfc_expr *, struct gfc_expr *,
1349 struct gfc_expr *, struct gfc_expr *);
1350 struct gfc_expr *(*f5)(struct gfc_expr *, struct gfc_expr *,
1351 struct gfc_expr *, struct gfc_expr *,
1353 struct gfc_expr *(*cc)(struct gfc_expr *, bt, int);
1357 /* Again like gfc_check_f, these specify the type of the resolution
1358 function associated with an intrinsic. The fX are just like in
1359 gfc_check_f. f1m is used for MIN and MAX, s1 is used for abort(). */
1363 void (*f0)(struct gfc_expr *);
1364 void (*f1)(struct gfc_expr *, struct gfc_expr *);
1365 void (*f1m)(struct gfc_expr *, struct gfc_actual_arglist *);
1366 void (*f2)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1367 void (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1369 void (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1370 struct gfc_expr *, struct gfc_expr *);
1371 void (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1372 struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1373 void (*s1)(struct gfc_code *);
1378 typedef struct gfc_intrinsic_sym
1380 const char *name, *lib_name;
1381 gfc_intrinsic_arg *formal;
1383 unsigned elemental:1, inquiry:1, transformational:1, pure:1,
1384 generic:1, specific:1, actual_ok:1, noreturn:1, conversion:1;
1388 gfc_simplify_f simplify;
1390 gfc_resolve_f resolve;
1391 struct gfc_intrinsic_sym *specific_head, *next;
1398 /* Expression nodes. The expression node types deserve explanations,
1399 since the last couple can be easily misconstrued:
1401 EXPR_OP Operator node pointing to one or two other nodes
1402 EXPR_FUNCTION Function call, symbol points to function's name
1403 EXPR_CONSTANT A scalar constant: Logical, String, Real, Int or Complex
1404 EXPR_VARIABLE An Lvalue with a root symbol and possible reference list
1405 which expresses structure, array and substring refs.
1406 EXPR_NULL The NULL pointer value (which also has a basic type).
1407 EXPR_SUBSTRING A substring of a constant string
1408 EXPR_STRUCTURE A structure constructor
1409 EXPR_ARRAY An array constructor. */
1413 #define GFC_RND_MODE GMP_RNDN
1415 typedef struct gfc_expr
1419 gfc_typespec ts; /* These two refer to the overall expression */
1422 mpz_t *shape; /* Can be NULL if shape is unknown at compile time */
1424 /* Nonnull for functions and structure constructors */
1425 gfc_symtree *symtree;
1431 /* True if the expression is a call to a function that returns an array,
1432 and if we have decided not to allocate temporary data for that array. */
1433 unsigned int inline_noncopying_intrinsic : 1, is_boz : 1;
1435 /* Used to quickly find a given constructor by its offset. */
1436 splay_tree con_by_offset;
1438 /* If an expression comes from a Hollerith constant or compile-time
1439 evaluation of a transfer statement, it may have a prescribed target-
1440 memory representation, and these cannot always be backformed from
1467 gfc_intrinsic_op operator;
1469 struct gfc_expr *op1, *op2;
1475 gfc_actual_arglist *actual;
1476 const char *name; /* Points to the ultimate name of the function */
1477 gfc_intrinsic_sym *isym;
1489 struct gfc_constructor *constructor;
1497 #define gfc_get_shape(rank) ((mpz_t *) gfc_getmem((rank)*sizeof(mpz_t)))
1499 /* Structures for information associated with different kinds of
1500 numbers. The first set of integer parameters define all there is
1501 to know about a particular kind. The rest of the elements are
1502 computed from the first elements. */
1506 /* Values really representable by the target. */
1507 mpz_t huge, pedantic_min_int, min_int;
1509 int kind, radix, digits, bit_size, range;
1511 /* True if the C type of the given name maps to this precision.
1512 Note that more than one bit can be set. */
1513 unsigned int c_char : 1;
1514 unsigned int c_short : 1;
1515 unsigned int c_int : 1;
1516 unsigned int c_long : 1;
1517 unsigned int c_long_long : 1;
1521 extern gfc_integer_info gfc_integer_kinds[];
1528 /* True if the C++ type bool, C99 type _Bool, maps to this precision. */
1529 unsigned int c_bool : 1;
1533 extern gfc_logical_info gfc_logical_kinds[];
1538 mpfr_t epsilon, huge, tiny, subnormal;
1539 int kind, radix, digits, min_exponent, max_exponent;
1540 int range, precision;
1542 /* The precision of the type as reported by GET_MODE_PRECISION. */
1545 /* True if the C type of the given name maps to this precision.
1546 Note that more than one bit can be set. */
1547 unsigned int c_float : 1;
1548 unsigned int c_double : 1;
1549 unsigned int c_long_double : 1;
1553 extern gfc_real_info gfc_real_kinds[];
1556 /* Equivalence structures. Equivalent lvalues are linked along the
1557 *eq pointer, equivalence sets are strung along the *next node. */
1558 typedef struct gfc_equiv
1560 struct gfc_equiv *next, *eq;
1567 #define gfc_get_equiv() gfc_getmem(sizeof(gfc_equiv))
1569 /* Holds a single equivalence member after processing. */
1570 typedef struct gfc_equiv_info
1573 HOST_WIDE_INT offset;
1574 HOST_WIDE_INT length;
1575 struct gfc_equiv_info *next;
1578 /* Holds equivalence groups, after they have been processed. */
1579 typedef struct gfc_equiv_list
1581 gfc_equiv_info *equiv;
1582 struct gfc_equiv_list *next;
1585 /* gfc_case stores the selector list of a case statement. The *low
1586 and *high pointers can point to the same expression in the case of
1587 a single value. If *high is NULL, the selection is from *low
1588 upwards, if *low is NULL the selection is *high downwards.
1590 This structure has separate fields to allow single and double linked
1591 lists of CASEs at the same time. The singe linked list along the NEXT
1592 field is a list of cases for a single CASE label. The double linked
1593 list along the LEFT/RIGHT fields is used to detect overlap and to
1594 build a table of the cases for SELECT constructs with a CHARACTER
1597 typedef struct gfc_case
1599 /* Where we saw this case. */
1603 /* Case range values. If (low == high), it's a single value. If one of
1604 the labels is NULL, it's an unbounded case. If both are NULL, this
1605 represents the default case. */
1606 gfc_expr *low, *high;
1608 /* Next case label in the list of cases for a single CASE label. */
1609 struct gfc_case *next;
1611 /* Used for detecting overlap, and for code generation. */
1612 struct gfc_case *left, *right;
1614 /* True if this case label can never be matched. */
1619 #define gfc_get_case() gfc_getmem(sizeof(gfc_case))
1624 gfc_expr *var, *start, *end, *step;
1628 #define gfc_get_iterator() gfc_getmem(sizeof(gfc_iterator))
1631 /* Allocation structure for ALLOCATE, DEALLOCATE and NULLIFY statements. */
1633 typedef struct gfc_alloc
1636 struct gfc_alloc *next;
1640 #define gfc_get_alloc() gfc_getmem(sizeof(gfc_alloc))
1645 gfc_expr *unit, *file, *status, *access, *form, *recl,
1646 *blank, *position, *action, *delim, *pad, *iostat, *iomsg, *convert,
1647 *decimal, *encoding, *round, *sign, *asynchronous, *id;
1655 gfc_expr *unit, *status, *iostat, *iomsg;
1663 gfc_expr *unit, *iostat, *iomsg;
1671 gfc_expr *unit, *file, *iostat, *exist, *opened, *number, *named,
1672 *name, *access, *sequential, *direct, *form, *formatted,
1673 *unformatted, *recl, *nextrec, *blank, *position, *action, *read,
1674 *write, *readwrite, *delim, *pad, *iolength, *iomsg, *convert, *strm_pos,
1675 *asynchronous, *decimal, *encoding, *pending, *round, *sign, *size, *id;
1685 gfc_expr *unit, *iostat, *iomsg, *id;
1686 gfc_st_label *err, *end, *eor;
1693 gfc_expr *io_unit, *format_expr, *rec, *advance, *iostat, *size, *iomsg,
1694 *id, *pos, *asynchronous, *blank, *decimal, *delim, *pad, *round,
1695 *sign, *extra_comma;
1697 gfc_symbol *namelist;
1698 /* A format_label of `format_asterisk' indicates the "*" format */
1699 gfc_st_label *format_label;
1700 gfc_st_label *err, *end, *eor;
1702 locus eor_where, end_where, err_where;
1707 typedef struct gfc_forall_iterator
1709 gfc_expr *var, *start, *end, *stride;
1710 struct gfc_forall_iterator *next;
1712 gfc_forall_iterator;
1715 /* Executable statements that fill gfc_code structures. */
1718 EXEC_NOP = 1, EXEC_ASSIGN, EXEC_LABEL_ASSIGN, EXEC_POINTER_ASSIGN,
1719 EXEC_GOTO, EXEC_CALL, EXEC_ASSIGN_CALL, EXEC_RETURN, EXEC_ENTRY,
1720 EXEC_PAUSE, EXEC_STOP, EXEC_CONTINUE, EXEC_INIT_ASSIGN,
1721 EXEC_IF, EXEC_ARITHMETIC_IF, EXEC_DO, EXEC_DO_WHILE, EXEC_SELECT,
1722 EXEC_FORALL, EXEC_WHERE, EXEC_CYCLE, EXEC_EXIT,
1723 EXEC_ALLOCATE, EXEC_DEALLOCATE,
1724 EXEC_OPEN, EXEC_CLOSE, EXEC_WAIT,
1725 EXEC_READ, EXEC_WRITE, EXEC_IOLENGTH, EXEC_TRANSFER, EXEC_DT_END,
1726 EXEC_BACKSPACE, EXEC_ENDFILE, EXEC_INQUIRE, EXEC_REWIND, EXEC_FLUSH,
1727 EXEC_OMP_CRITICAL, EXEC_OMP_DO, EXEC_OMP_FLUSH, EXEC_OMP_MASTER,
1728 EXEC_OMP_ORDERED, EXEC_OMP_PARALLEL, EXEC_OMP_PARALLEL_DO,
1729 EXEC_OMP_PARALLEL_SECTIONS, EXEC_OMP_PARALLEL_WORKSHARE,
1730 EXEC_OMP_SECTIONS, EXEC_OMP_SINGLE, EXEC_OMP_WORKSHARE,
1731 EXEC_OMP_ATOMIC, EXEC_OMP_BARRIER, EXEC_OMP_END_NOWAIT,
1736 typedef struct gfc_code
1740 struct gfc_code *block, *next;
1743 gfc_st_label *here, *label, *label2, *label3;
1744 gfc_symtree *symtree;
1745 gfc_expr *expr, *expr2;
1746 /* A name isn't sufficient to identify a subroutine, we need the actual
1747 symbol for the interface definition.
1748 const char *sub_name; */
1749 gfc_symbol *resolved_sym;
1753 gfc_actual_arglist *actual;
1754 gfc_case *case_list;
1755 gfc_iterator *iterator;
1756 gfc_alloc *alloc_list;
1759 gfc_filepos *filepos;
1760 gfc_inquire *inquire;
1763 gfc_forall_iterator *forall_iterator;
1764 struct gfc_code *whichloop;
1766 gfc_entry_list *entry;
1767 gfc_omp_clauses *omp_clauses;
1768 const char *omp_name;
1769 gfc_namelist *omp_namelist;
1772 ext; /* Points to additional structures required by statement */
1774 /* Backend_decl is used for cycle and break labels in do loops, and
1775 probably for other constructs as well, once we translate them. */
1781 /* Storage for DATA statements. */
1782 typedef struct gfc_data_variable
1786 struct gfc_data_variable *list, *next;
1791 typedef struct gfc_data_value
1795 struct gfc_data_value *next;
1800 typedef struct gfc_data
1802 gfc_data_variable *var;
1803 gfc_data_value *value;
1806 struct gfc_data *next;
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;
1829 int dump_parse_tree;
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;
1869 int flag_init_local_zero;
1870 int flag_init_integer;
1871 int flag_init_integer_value;
1873 int flag_init_logical;
1874 int flag_init_character;
1875 char flag_init_character_value;
1881 int warn_nonstd_intrinsics;
1885 int max_subrecord_length;
1889 extern gfc_option_t gfc_option;
1891 /* Constructor nodes for array and structure constructors. */
1892 typedef struct gfc_constructor
1895 gfc_iterator *iterator;
1897 struct gfc_constructor *next;
1900 mpz_t offset; /* Record the offset of array element which appears in
1901 data statement like "data a(5)/4/". */
1902 gfc_component *component; /* Record the component being initialized. */
1905 mpz_t repeat; /* Record the repeat number of initial values in data
1906 statement like "data a/5*10/". */
1911 typedef struct iterator_stack
1913 gfc_symtree *variable;
1915 struct iterator_stack *prev;
1918 extern iterator_stack *iter_stack;
1920 /************************ Function prototypes *************************/
1923 bool gfc_in_match_data (void);
1926 void gfc_scanner_done_1 (void);
1927 void gfc_scanner_init_1 (void);
1929 void gfc_add_include_path (const char *, bool);
1930 void gfc_add_intrinsic_modules_path (const char *);
1931 void gfc_release_include_path (void);
1932 FILE *gfc_open_included_file (const char *, bool, bool);
1933 FILE *gfc_open_intrinsic_module (const char *);
1935 int gfc_at_end (void);
1936 int gfc_at_eof (void);
1937 int gfc_at_bol (void);
1938 int gfc_at_eol (void);
1939 void gfc_advance_line (void);
1940 int gfc_check_include (void);
1941 int gfc_define_undef_line (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;
1956 void gfc_start_source_files (void);
1957 void gfc_end_source_files (void);
1960 void *gfc_getmem (size_t) ATTRIBUTE_MALLOC;
1961 void gfc_free (void *);
1962 int gfc_terminal_width (void);
1963 void gfc_clear_ts (gfc_typespec *);
1964 FILE *gfc_open_file (const char *);
1965 const char *gfc_basic_typename (bt);
1966 const char *gfc_typename (gfc_typespec *);
1967 const char *gfc_op2string (gfc_intrinsic_op);
1968 const char *gfc_code2string (const mstring *, int);
1969 int gfc_string2code (const mstring *, const char *);
1970 const char *gfc_intent_string (sym_intent);
1972 void gfc_init_1 (void);
1973 void gfc_init_2 (void);
1974 void gfc_done_1 (void);
1975 void gfc_done_2 (void);
1977 int get_c_kind (const char *, CInteropKind_t *);
1980 unsigned int gfc_init_options (unsigned int, const char **);
1981 int gfc_handle_option (size_t, const char *, int);
1982 bool gfc_post_options (const char **);
1985 const char * gfc_get_string (const char *, ...) ATTRIBUTE_PRINTF_1;
1989 typedef struct gfc_error_buf
1992 size_t allocated, index;
1996 void gfc_error_init_1 (void);
1997 void gfc_buffer_error (int);
1999 void gfc_warning (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2000 void gfc_warning_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2001 void gfc_clear_warning (void);
2002 void gfc_warning_check (void);
2004 void gfc_error (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2005 void gfc_error_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2006 void gfc_fatal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2007 void gfc_internal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2008 void gfc_clear_error (void);
2009 int gfc_error_check (void);
2010 int gfc_error_flag_test (void);
2012 notification gfc_notification_std (int);
2013 try gfc_notify_std (int, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
2015 /* A general purpose syntax error. */
2016 #define gfc_syntax_error(ST) \
2017 gfc_error ("Syntax error in %s statement at %C", gfc_ascii_statement (ST));
2019 void gfc_push_error (gfc_error_buf *);
2020 void gfc_pop_error (gfc_error_buf *);
2021 void gfc_free_error (gfc_error_buf *);
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 *);
2095 try gfc_add_proc (symbol_attribute *attr, const char *name, locus *where);
2097 try gfc_add_access (symbol_attribute *, gfc_access, const char *, locus *);
2098 try gfc_add_is_bind_c(symbol_attribute *, const char *, locus *, int);
2099 try gfc_add_value (symbol_attribute *, const char *, locus *);
2100 try gfc_add_flavor (symbol_attribute *, sym_flavor, const char *, locus *);
2101 try gfc_add_entry (symbol_attribute *, const char *, locus *);
2102 try gfc_add_procedure (symbol_attribute *, procedure_type,
2103 const char *, locus *);
2104 try gfc_add_intent (symbol_attribute *, sym_intent, locus *);
2105 try gfc_add_explicit_interface (gfc_symbol *, ifsrc,
2106 gfc_formal_arglist *, locus *);
2107 try gfc_add_type (gfc_symbol *, gfc_typespec *, locus *);
2109 void gfc_clear_attr (symbol_attribute *);
2110 try gfc_missing_attr (symbol_attribute *, locus *);
2111 try gfc_copy_attr (symbol_attribute *, symbol_attribute *, locus *);
2113 try gfc_add_component (gfc_symbol *, const char *, gfc_component **);
2114 gfc_symbol *gfc_use_derived (gfc_symbol *);
2115 gfc_symtree *gfc_use_derived_tree (gfc_symtree *);
2116 gfc_component *gfc_find_component (gfc_symbol *, const char *);
2118 gfc_st_label *gfc_get_st_label (int);
2119 void gfc_free_st_label (gfc_st_label *);
2120 void gfc_define_st_label (gfc_st_label *, gfc_sl_type, locus *);
2121 try gfc_reference_st_label (gfc_st_label *, gfc_sl_type);
2123 gfc_expr * gfc_lval_expr_from_sym (gfc_symbol *);
2125 gfc_namespace *gfc_get_namespace (gfc_namespace *, int);
2126 gfc_symtree *gfc_new_symtree (gfc_symtree **, const char *);
2127 gfc_symtree *gfc_find_symtree (gfc_symtree *, const char *);
2128 void gfc_delete_symtree (gfc_symtree **, const char *);
2129 gfc_symtree *gfc_get_unique_symtree (gfc_namespace *);
2130 gfc_user_op *gfc_get_uop (const char *);
2131 gfc_user_op *gfc_find_uop (const char *, gfc_namespace *);
2132 void gfc_free_symbol (gfc_symbol *);
2133 gfc_symbol *gfc_new_symbol (const char *, gfc_namespace *);
2134 int gfc_find_symbol (const char *, gfc_namespace *, int, gfc_symbol **);
2135 int gfc_find_sym_tree (const char *, gfc_namespace *, int, gfc_symtree **);
2136 int gfc_get_symbol (const char *, gfc_namespace *, gfc_symbol **);
2137 try verify_c_interop (gfc_typespec *, const char *name, locus *where);
2138 try verify_c_interop_param (gfc_symbol *);
2139 try verify_bind_c_sym (gfc_symbol *, gfc_typespec *, int, gfc_common_head *);
2140 try verify_bind_c_derived_type (gfc_symbol *);
2141 try verify_com_block_vars_c_interop (gfc_common_head *);
2142 void generate_isocbinding_symbol (const char *, iso_c_binding_symbol, const char *);
2143 gfc_symbol *get_iso_c_sym (gfc_symbol *, char *, char *, int);
2144 int gfc_get_sym_tree (const char *, gfc_namespace *, gfc_symtree **);
2145 int gfc_get_ha_symbol (const char *, gfc_symbol **);
2146 int gfc_get_ha_sym_tree (const char *, gfc_symtree **);
2148 int gfc_symbols_could_alias (gfc_symbol *, gfc_symbol *);
2150 void gfc_undo_symbols (void);
2151 void gfc_commit_symbols (void);
2152 void gfc_commit_symbol (gfc_symbol *);
2153 void gfc_free_namespace (gfc_namespace *);
2155 void gfc_symbol_init_2 (void);
2156 void gfc_symbol_done_2 (void);
2158 void gfc_traverse_symtree (gfc_symtree *, void (*)(gfc_symtree *));
2159 void gfc_traverse_ns (gfc_namespace *, void (*)(gfc_symbol *));
2160 void gfc_traverse_user_op (gfc_namespace *, void (*)(gfc_user_op *));
2161 void gfc_save_all (gfc_namespace *);
2163 void gfc_symbol_state (void);
2165 gfc_gsymbol *gfc_get_gsymbol (const char *);
2166 gfc_gsymbol *gfc_find_gsymbol (gfc_gsymbol *, const char *);
2168 void copy_formal_args (gfc_symbol *dest, gfc_symbol *src);
2171 extern int gfc_init_expr;
2173 /* Given a symbol that we have decided is intrinsic, mark it as such
2174 by placing it into a special module that is otherwise impossible to
2177 #define gfc_intrinsic_symbol(SYM) SYM->module = gfc_get_string ("(intrinsic)")
2179 void gfc_intrinsic_init_1 (void);
2180 void gfc_intrinsic_done_1 (void);
2182 char gfc_type_letter (bt);
2183 gfc_symbol * gfc_get_intrinsic_sub_symbol (const char *);
2184 try gfc_convert_type (gfc_expr *, gfc_typespec *, int);
2185 try gfc_convert_type_warn (gfc_expr *, gfc_typespec *, int, int);
2186 int gfc_generic_intrinsic (const char *);
2187 int gfc_specific_intrinsic (const char *);
2188 int gfc_intrinsic_name (const char *, int);
2189 int gfc_intrinsic_actual_ok (const char *, const bool);
2190 gfc_intrinsic_sym *gfc_find_function (const char *);
2191 gfc_intrinsic_sym *gfc_find_subroutine (const char *);
2193 match gfc_intrinsic_func_interface (gfc_expr *, int);
2194 match gfc_intrinsic_sub_interface (gfc_code *, int);
2196 /* match.c -- FIXME */
2197 void gfc_free_iterator (gfc_iterator *, int);
2198 void gfc_free_forall_iterator (gfc_forall_iterator *);
2199 void gfc_free_alloc_list (gfc_alloc *);
2200 void gfc_free_namelist (gfc_namelist *);
2201 void gfc_free_equiv (gfc_equiv *);
2202 void gfc_free_data (gfc_data *);
2203 void gfc_free_case_list (gfc_case *);
2205 /* matchexp.c -- FIXME too? */
2206 gfc_expr *gfc_get_parentheses (gfc_expr *);
2209 void gfc_free_omp_clauses (gfc_omp_clauses *);
2210 void gfc_resolve_omp_directive (gfc_code *, gfc_namespace *);
2211 void gfc_resolve_do_iterator (gfc_code *, gfc_symbol *);
2212 void gfc_resolve_omp_parallel_blocks (gfc_code *, gfc_namespace *);
2213 void gfc_resolve_omp_do_blocks (gfc_code *, gfc_namespace *);
2216 void gfc_free_actual_arglist (gfc_actual_arglist *);
2217 gfc_actual_arglist *gfc_copy_actual_arglist (gfc_actual_arglist *);
2218 const char *gfc_extract_int (gfc_expr *, int *);
2219 gfc_expr *gfc_expr_to_initialize (gfc_expr *);
2220 bool is_subref_array (gfc_expr *);
2222 gfc_expr *gfc_build_conversion (gfc_expr *);
2223 void gfc_free_ref_list (gfc_ref *);
2224 void gfc_type_convert_binary (gfc_expr *);
2225 int gfc_is_constant_expr (gfc_expr *);
2226 try gfc_simplify_expr (gfc_expr *, int);
2227 int gfc_has_vector_index (gfc_expr *);
2229 gfc_expr *gfc_get_expr (void);
2230 void gfc_free_expr (gfc_expr *);
2231 void gfc_replace_expr (gfc_expr *, gfc_expr *);
2232 gfc_expr *gfc_int_expr (int);
2233 gfc_expr *gfc_logical_expr (int, locus *);
2234 mpz_t *gfc_copy_shape (mpz_t *, int);
2235 mpz_t *gfc_copy_shape_excluding (mpz_t *, int, gfc_expr *);
2236 gfc_expr *gfc_copy_expr (gfc_expr *);
2238 try gfc_specification_expr (gfc_expr *);
2240 int gfc_numeric_ts (gfc_typespec *);
2241 int gfc_kind_max (gfc_expr *, gfc_expr *);
2243 try gfc_check_conformance (const char *, gfc_expr *, gfc_expr *);
2244 try gfc_check_assign (gfc_expr *, gfc_expr *, int);
2245 try gfc_check_pointer_assign (gfc_expr *, gfc_expr *);
2246 try gfc_check_assign_symbol (gfc_symbol *, gfc_expr *);
2248 gfc_expr *gfc_default_initializer (gfc_typespec *);
2249 gfc_expr *gfc_get_variable_expr (gfc_symtree *);
2251 bool gfc_traverse_expr (gfc_expr *, gfc_symbol *,
2252 bool (*)(gfc_expr *, gfc_symbol *, int*),
2254 void gfc_expr_set_symbols_referenced (gfc_expr *);
2257 extern gfc_code new_st;
2259 void gfc_clear_new_st (void);
2260 gfc_code *gfc_get_code (void);
2261 gfc_code *gfc_append_code (gfc_code *, gfc_code *);
2262 void gfc_free_statement (gfc_code *);
2263 void gfc_free_statements (gfc_code *);
2266 try gfc_resolve_expr (gfc_expr *);
2267 void gfc_resolve (gfc_namespace *);
2268 void gfc_resolve_blocks (gfc_code *, gfc_namespace *);
2269 int gfc_impure_variable (gfc_symbol *);
2270 int gfc_pure (gfc_symbol *);
2271 int gfc_elemental (gfc_symbol *);
2272 try gfc_resolve_iterator (gfc_iterator *, bool);
2273 try find_forall_index (gfc_expr *, gfc_symbol *, int);
2274 try gfc_resolve_index (gfc_expr *, int);
2275 try gfc_resolve_dim_arg (gfc_expr *);
2276 int gfc_is_formal_arg (void);
2277 void gfc_resolve_substring_charlen (gfc_expr *);
2278 match gfc_iso_c_sub_interface(gfc_code *, gfc_symbol *);
2282 void gfc_free_array_spec (gfc_array_spec *);
2283 gfc_array_ref *gfc_copy_array_ref (gfc_array_ref *);
2285 try gfc_set_array_spec (gfc_symbol *, gfc_array_spec *, locus *);
2286 gfc_array_spec *gfc_copy_array_spec (gfc_array_spec *);
2287 try gfc_resolve_array_spec (gfc_array_spec *, int);
2289 int gfc_compare_array_spec (gfc_array_spec *, gfc_array_spec *);
2291 gfc_expr *gfc_start_constructor (bt, int, locus *);
2292 void gfc_append_constructor (gfc_expr *, gfc_expr *);
2293 void gfc_free_constructor (gfc_constructor *);
2294 void gfc_simplify_iterator_var (gfc_expr *);
2295 try gfc_expand_constructor (gfc_expr *);
2296 int gfc_constant_ac (gfc_expr *);
2297 int gfc_expanded_ac (gfc_expr *);
2298 void gfc_resolve_character_array_constructor (gfc_expr *);
2299 try gfc_resolve_array_constructor (gfc_expr *);
2300 try gfc_check_constructor_type (gfc_expr *);
2301 try gfc_check_iter_variable (gfc_expr *);
2302 try gfc_check_constructor (gfc_expr *, try (*)(gfc_expr *));
2303 gfc_constructor *gfc_copy_constructor (gfc_constructor *);
2304 gfc_expr *gfc_get_array_element (gfc_expr *, int);
2305 try gfc_array_size (gfc_expr *, mpz_t *);
2306 try gfc_array_dimen_size (gfc_expr *, int, mpz_t *);
2307 try gfc_array_ref_shape (gfc_array_ref *, mpz_t *);
2308 gfc_array_ref *gfc_find_array_ref (gfc_expr *);
2309 void gfc_insert_constructor (gfc_expr *, gfc_constructor *);
2310 gfc_constructor *gfc_get_constructor (void);
2311 tree gfc_conv_array_initializer (tree type, gfc_expr *);
2312 try spec_size (gfc_array_spec *, mpz_t *);
2313 try spec_dimen_size (gfc_array_spec *, int, mpz_t *);
2314 int gfc_is_compile_time_shape (gfc_array_spec *);
2316 /* interface.c -- FIXME: some of these should be in symbol.c */
2317 void gfc_free_interface (gfc_interface *);
2318 int gfc_compare_derived_types (gfc_symbol *, gfc_symbol *);
2319 int gfc_compare_types (gfc_typespec *, gfc_typespec *);
2320 void gfc_check_interfaces (gfc_namespace *);
2321 void gfc_procedure_use (gfc_symbol *, gfc_actual_arglist **, locus *);
2322 gfc_symbol *gfc_search_interface (gfc_interface *, int,
2323 gfc_actual_arglist **);
2324 try gfc_extend_expr (gfc_expr *);
2325 void gfc_free_formal_arglist (gfc_formal_arglist *);
2326 try gfc_extend_assign (gfc_code *, gfc_namespace *);
2327 try gfc_add_interface (gfc_symbol *);
2328 gfc_interface *gfc_current_interface_head (void);
2329 void gfc_set_current_interface_head (gfc_interface *);
2332 extern gfc_st_label format_asterisk;
2334 void gfc_free_open (gfc_open *);
2335 try gfc_resolve_open (gfc_open *);
2336 void gfc_free_close (gfc_close *);
2337 try gfc_resolve_close (gfc_close *);
2338 void gfc_free_filepos (gfc_filepos *);
2339 try gfc_resolve_filepos (gfc_filepos *);
2340 void gfc_free_inquire (gfc_inquire *);
2341 try gfc_resolve_inquire (gfc_inquire *);
2342 void gfc_free_dt (gfc_dt *);
2343 try gfc_resolve_dt (gfc_dt *);
2344 void gfc_free_wait (gfc_wait *);
2345 try gfc_resolve_wait (gfc_wait *);
2348 void gfc_module_init_2 (void);
2349 void gfc_module_done_2 (void);
2350 void gfc_dump_module (const char *, int);
2351 bool gfc_check_access (gfc_access, gfc_access);
2354 symbol_attribute gfc_variable_attr (gfc_expr *, gfc_typespec *);
2355 symbol_attribute gfc_expr_attr (gfc_expr *);
2356 match gfc_match_rvalue (gfc_expr **);
2359 void gfc_generate_code (gfc_namespace *);
2360 void gfc_generate_module_code (gfc_namespace *);
2363 typedef int (*compare_fn) (void *, void *);
2364 void gfc_insert_bbt (void *, void *, compare_fn);
2365 void gfc_delete_bbt (void *, void *, compare_fn);
2367 /* dump-parse-tree.c */
2368 void gfc_dump_parse_tree (gfc_namespace *, FILE *);
2371 try gfc_parse_file (void);
2372 void gfc_global_used (gfc_gsymbol *, locus *);
2375 int gfc_dep_compare_expr (gfc_expr *, gfc_expr *);
2377 #endif /* GCC_GFORTRAN_H */