1 /* gfortran header file
2 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
4 Free Software Foundation, Inc.
5 Contributed by Andy Vaught
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 #ifndef GCC_GFORTRAN_H
24 #define GCC_GFORTRAN_H
26 /* It's probably insane to have this large of a header file, but it
27 seemed like everything had to be recompiled anyway when a change
28 was made to a header file, and there were ordering issues with
29 multiple header files. Besides, Microsoft's winnt.h was 250k last
30 time I looked, so by comparison this is perfectly reasonable. */
32 /* Declarations common to the front-end and library are put in
33 libgfortran/libgfortran_frontend.h */
34 #include "libgfortran.h"
38 #include "coretypes.h"
40 #include "splay-tree.h"
42 /* Major control parameters. */
44 #define GFC_MAX_SYMBOL_LEN 63 /* Must be at least 63 for F2003. */
45 #define GFC_MAX_LINE 132 /* Characters beyond this are not seen. */
46 #define GFC_LETTERS 26 /* Number of letters in the alphabet. */
48 #define MAX_SUBRECORD_LENGTH 2147483639 /* 2**31-9 */
51 #define gfc_is_whitespace(c) ((c==' ') || (c=='\t'))
54 #define stringize(x) expand_macro(x)
55 #define expand_macro(x) # x
57 /* For the runtime library, a standard prefix is a requirement to
58 avoid cluttering the namespace with things nobody asked for. It's
59 ugly to look at and a pain to type when you add the prefix by hand,
60 so we hide it behind a macro. */
61 #define PREFIX(x) "_gfortran_" x
64 #define BLANK_COMMON_NAME "__BLNK__"
66 /* Macro to initialize an mstring structure. */
67 #define minit(s, t) { s, NULL, t }
69 /* Structure for storing strings to be matched by gfc_match_string. */
80 /*************************** Enums *****************************/
82 /* Used when matching and resolving data I/O transfer statements. */
85 { M_READ, M_WRITE, M_PRINT, M_INQUIRE }
88 /* The author remains confused to this day about the convention of
89 returning '0' for 'SUCCESS'... or was it the other way around? The
90 following enum makes things much more readable. We also start
91 values off at one instead of zero. */
94 { SUCCESS = 1, FAILURE }
97 /* These are flags for identifying whether we are reading a character literal
98 between quotes or normal source code. */
101 { NONSTRING = 0, INSTRING_WARN, INSTRING_NOWARN }
104 /* This is returned by gfc_notification_std to know if, given the flags
105 that were given (-std=, -pedantic) we should issue an error, a warning
109 { SILENT, WARNING, ERROR }
112 /* Matchers return one of these three values. The difference between
113 MATCH_NO and MATCH_ERROR is that MATCH_ERROR means that a match was
114 successful, but that something non-syntactic is wrong and an error
115 has already been issued. */
118 { MATCH_NO = 1, MATCH_YES, MATCH_ERROR }
121 /* Used for different Fortran source forms in places like scanner.c. */
123 { FORM_FREE, FORM_FIXED, FORM_UNKNOWN }
126 /* Expression node types. */
128 { EXPR_OP = 1, EXPR_FUNCTION, EXPR_CONSTANT, EXPR_VARIABLE,
129 EXPR_SUBSTRING, EXPR_STRUCTURE, EXPR_ARRAY, EXPR_NULL, EXPR_COMPCALL, EXPR_PPC
135 { AS_EXPLICIT = 1, AS_ASSUMED_SHAPE, AS_DEFERRED,
136 AS_ASSUMED_SIZE, AS_IMPLIED_SHAPE, AS_UNKNOWN
141 { AR_FULL = 1, AR_ELEMENT, AR_SECTION, AR_UNKNOWN }
144 /* Statement label types. */
146 { ST_LABEL_UNKNOWN = 1, ST_LABEL_TARGET,
147 ST_LABEL_BAD_TARGET, ST_LABEL_FORMAT
151 /* Intrinsic operators. */
153 { GFC_INTRINSIC_BEGIN = 0,
154 INTRINSIC_NONE = -1, INTRINSIC_UPLUS = GFC_INTRINSIC_BEGIN,
155 INTRINSIC_UMINUS, INTRINSIC_PLUS, INTRINSIC_MINUS, INTRINSIC_TIMES,
156 INTRINSIC_DIVIDE, INTRINSIC_POWER, INTRINSIC_CONCAT,
157 INTRINSIC_AND, INTRINSIC_OR, INTRINSIC_EQV, INTRINSIC_NEQV,
158 /* ==, /=, >, >=, <, <= */
159 INTRINSIC_EQ, INTRINSIC_NE, INTRINSIC_GT, INTRINSIC_GE,
160 INTRINSIC_LT, INTRINSIC_LE,
161 /* .EQ., .NE., .GT., .GE., .LT., .LE. (OS = Old-Style) */
162 INTRINSIC_EQ_OS, INTRINSIC_NE_OS, INTRINSIC_GT_OS, INTRINSIC_GE_OS,
163 INTRINSIC_LT_OS, INTRINSIC_LE_OS,
164 INTRINSIC_NOT, INTRINSIC_USER, INTRINSIC_ASSIGN,
165 INTRINSIC_PARENTHESES, GFC_INTRINSIC_END /* Sentinel */
169 /* This macro is the number of intrinsic operators that exist.
170 Assumptions are made about the numbering of the interface_op enums. */
171 #define GFC_INTRINSIC_OPS GFC_INTRINSIC_END
173 /* Arithmetic results. */
175 { ARITH_OK = 1, ARITH_OVERFLOW, ARITH_UNDERFLOW, ARITH_NAN,
176 ARITH_DIV0, ARITH_INCOMMENSURATE, ARITH_ASYMMETRIC, ARITH_PROHIBIT
183 ST_ARITHMETIC_IF, ST_ALLOCATE, ST_ATTR_DECL, ST_ASSOCIATE,
184 ST_BACKSPACE, ST_BLOCK, ST_BLOCK_DATA,
185 ST_CALL, ST_CASE, ST_CLOSE, ST_COMMON, ST_CONTINUE, ST_CONTAINS, ST_CYCLE,
186 ST_DATA, ST_DATA_DECL, ST_DEALLOCATE, ST_DO, ST_ELSE, ST_ELSEIF,
187 ST_ELSEWHERE, ST_END_ASSOCIATE, ST_END_BLOCK, ST_END_BLOCK_DATA,
188 ST_ENDDO, ST_IMPLIED_ENDDO,
189 ST_END_FILE, ST_FINAL, ST_FLUSH, ST_END_FORALL, ST_END_FUNCTION, ST_ENDIF,
190 ST_END_INTERFACE, ST_END_MODULE, ST_END_PROGRAM, ST_END_SELECT,
191 ST_END_SUBROUTINE, ST_END_WHERE, ST_END_TYPE, ST_ENTRY, ST_EQUIVALENCE,
192 ST_ERROR_STOP, ST_EXIT, ST_FORALL, ST_FORALL_BLOCK, ST_FORMAT, ST_FUNCTION,
193 ST_GOTO, ST_IF_BLOCK, ST_IMPLICIT, ST_IMPLICIT_NONE, ST_IMPORT,
194 ST_INQUIRE, ST_INTERFACE, ST_SYNC_ALL, ST_SYNC_MEMORY, ST_SYNC_IMAGES,
195 ST_PARAMETER, ST_MODULE, ST_MODULE_PROC, ST_NAMELIST, ST_NULLIFY, ST_OPEN,
196 ST_PAUSE, ST_PRIVATE, ST_PROGRAM, ST_PUBLIC, ST_READ, ST_RETURN, ST_REWIND,
197 ST_STOP, ST_SUBROUTINE, ST_TYPE, ST_USE, ST_WHERE_BLOCK, ST_WHERE, ST_WAIT,
198 ST_WRITE, ST_ASSIGNMENT, ST_POINTER_ASSIGNMENT, ST_SELECT_CASE, ST_SEQUENCE,
199 ST_SIMPLE_IF, ST_STATEMENT_FUNCTION, ST_DERIVED_DECL, ST_LABEL_ASSIGNMENT,
200 ST_ENUM, ST_ENUMERATOR, ST_END_ENUM, ST_SELECT_TYPE, ST_TYPE_IS, ST_CLASS_IS,
201 ST_OMP_ATOMIC, ST_OMP_BARRIER, ST_OMP_CRITICAL, ST_OMP_END_ATOMIC,
202 ST_OMP_END_CRITICAL, ST_OMP_END_DO, ST_OMP_END_MASTER, ST_OMP_END_ORDERED,
203 ST_OMP_END_PARALLEL, ST_OMP_END_PARALLEL_DO, ST_OMP_END_PARALLEL_SECTIONS,
204 ST_OMP_END_PARALLEL_WORKSHARE, ST_OMP_END_SECTIONS, ST_OMP_END_SINGLE,
205 ST_OMP_END_WORKSHARE, ST_OMP_DO, ST_OMP_FLUSH, ST_OMP_MASTER, ST_OMP_ORDERED,
206 ST_OMP_PARALLEL, ST_OMP_PARALLEL_DO, ST_OMP_PARALLEL_SECTIONS,
207 ST_OMP_PARALLEL_WORKSHARE, ST_OMP_SECTIONS, ST_OMP_SECTION, ST_OMP_SINGLE,
208 ST_OMP_THREADPRIVATE, ST_OMP_WORKSHARE, ST_OMP_TASK, ST_OMP_END_TASK,
209 ST_OMP_TASKWAIT, ST_OMP_TASKYIELD, ST_PROCEDURE, ST_GENERIC, ST_CRITICAL,
210 ST_END_CRITICAL, ST_GET_FCN_CHARACTERISTICS, ST_LOCK, ST_UNLOCK, ST_NONE
214 /* Types of interfaces that we can have. Assignment interfaces are
215 considered to be intrinsic operators. */
218 INTERFACE_NAMELESS = 1, INTERFACE_GENERIC,
219 INTERFACE_INTRINSIC_OP, INTERFACE_USER_OP, INTERFACE_ABSTRACT
223 /* Symbol flavors: these are all mutually exclusive.
224 10 elements = 4 bits. */
225 typedef enum sym_flavor
227 FL_UNKNOWN = 0, FL_PROGRAM, FL_BLOCK_DATA, FL_MODULE, FL_VARIABLE,
228 FL_PARAMETER, FL_LABEL, FL_PROCEDURE, FL_DERIVED, FL_NAMELIST,
233 /* Procedure types. 7 elements = 3 bits. */
234 typedef enum procedure_type
235 { PROC_UNKNOWN, PROC_MODULE, PROC_INTERNAL, PROC_DUMMY,
236 PROC_INTRINSIC, PROC_ST_FUNCTION, PROC_EXTERNAL
241 typedef enum sym_intent
242 { INTENT_UNKNOWN = 0, INTENT_IN, INTENT_OUT, INTENT_INOUT
247 typedef enum gfc_access
248 { ACCESS_UNKNOWN = 0, ACCESS_PUBLIC, ACCESS_PRIVATE
252 /* Flags to keep track of where an interface came from.
253 3 elements = 2 bits. */
255 { IFSRC_UNKNOWN = 0, /* Interface unknown, only return type may be known. */
256 IFSRC_DECL, /* FUNCTION or SUBROUTINE declaration. */
257 IFSRC_IFBODY /* INTERFACE statement or PROCEDURE statement
258 with explicit interface. */
262 /* Whether a SAVE attribute was set explicitly or implicitly. */
263 typedef enum save_state
264 { SAVE_NONE = 0, SAVE_EXPLICIT, SAVE_IMPLICIT
268 /* Strings for all symbol attributes. We use these for dumping the
269 parse tree, in error messages, and also when reading and writing
270 modules. In symbol.c. */
271 extern const mstring flavors[];
272 extern const mstring procedures[];
273 extern const mstring intents[];
274 extern const mstring access_types[];
275 extern const mstring ifsrc_types[];
276 extern const mstring save_status[];
278 /* Enumeration of all the generic intrinsic functions. Used by the
279 backend for identification of a function. */
283 /* GFC_ISYM_NONE is used for intrinsics which will never be seen by
284 the backend (e.g. KIND). */
321 GFC_ISYM_COMMAND_ARGUMENT_COUNT,
322 GFC_ISYM_COMPILER_OPTIONS,
323 GFC_ISYM_COMPILER_VERSION,
334 GFC_ISYM_DATE_AND_TIME,
338 GFC_ISYM_DOT_PRODUCT,
347 GFC_ISYM_ERFC_SCALED,
349 GFC_ISYM_EXECUTE_COMMAND_LINE,
353 GFC_ISYM_EXTENDS_TYPE_OF,
370 GFC_ISYM_GET_COMMAND,
371 GFC_ISYM_GET_COMMAND_ARGUMENT,
374 GFC_ISYM_GET_ENVIRONMENT_VARIABLE,
395 GFC_ISYM_IMAGE_INDEX,
404 GFC_ISYM_IS_IOSTAT_END,
405 GFC_ISYM_IS_IOSTAT_EOR,
440 GFC_ISYM_MAXEXPONENT,
448 GFC_ISYM_MINEXPONENT,
473 GFC_ISYM_RANDOM_NUMBER,
474 GFC_ISYM_RANDOM_SEED,
483 GFC_ISYM_SAME_TYPE_AS,
489 GFC_ISYM_SET_EXPONENT,
508 GFC_ISYM_STORAGE_SIZE,
513 GFC_ISYM_SYSTEM_CLOCK,
537 typedef enum gfc_isym_id gfc_isym_id;
542 GFC_INIT_REAL_OFF = 0,
547 GFC_INIT_REAL_NEG_INF
553 GFC_INIT_LOGICAL_OFF = 0,
554 GFC_INIT_LOGICAL_FALSE,
555 GFC_INIT_LOGICAL_TRUE
561 GFC_INIT_CHARACTER_OFF = 0,
562 GFC_INIT_CHARACTER_ON
564 init_local_character;
568 GFC_INIT_INTEGER_OFF = 0,
575 GFC_FCOARRAY_NONE = 0,
590 /************************* Structures *****************************/
592 /* Used for keeping things in balanced binary trees. */
593 #define BBT_HEADER(self) int priority; struct self *left, *right
595 #define NAMED_INTCST(a,b,c,d) a,
596 #define NAMED_KINDARRAY(a,b,c,d) a,
597 #define NAMED_FUNCTION(a,b,c,d) a,
598 #define NAMED_DERIVED_TYPE(a,b,c,d) a,
601 ISOFORTRANENV_INVALID = -1,
602 #include "iso-fortran-env.def"
603 ISOFORTRANENV_LAST, ISOFORTRANENV_NUMBER = ISOFORTRANENV_LAST
605 iso_fortran_env_symbol;
607 #undef NAMED_KINDARRAY
608 #undef NAMED_FUNCTION
609 #undef NAMED_DERIVED_TYPE
611 #define NAMED_INTCST(a,b,c,d) a,
612 #define NAMED_REALCST(a,b,c,d) a,
613 #define NAMED_CMPXCST(a,b,c,d) a,
614 #define NAMED_LOGCST(a,b,c) a,
615 #define NAMED_CHARKNDCST(a,b,c) a,
616 #define NAMED_CHARCST(a,b,c) a,
617 #define DERIVED_TYPE(a,b,c) a,
618 #define PROCEDURE(a,b) a,
619 #define NAMED_FUNCTION(a,b,c,d) a,
622 ISOCBINDING_INVALID = -1,
623 #include "iso-c-binding.def"
625 ISOCBINDING_NUMBER = ISOCBINDING_LAST
627 iso_c_binding_symbol;
632 #undef NAMED_CHARKNDCST
636 #undef NAMED_FUNCTION
640 INTMOD_NONE = 0, INTMOD_ISO_FORTRAN_ENV, INTMOD_ISO_C_BINDING
646 char name[GFC_MAX_SYMBOL_LEN + 1];
647 int value; /* Used for both integer and character values. */
652 /* Array of structs, where the structs represent the C interop kinds.
653 The list will be implemented based on a hash of the kind name since
654 these could be accessed multiple times.
655 Declared in trans-types.c as a global, since it's in that file
656 that the list is initialized. */
657 extern CInteropKind_t c_interop_kinds_table[];
660 /* Structure and list of supported extension attributes. */
663 EXT_ATTR_DLLIMPORT = 0,
668 EXT_ATTR_LAST, EXT_ATTR_NUM = EXT_ATTR_LAST
676 const char *middle_end_name;
680 extern const ext_attr_t ext_attr_list[];
682 /* Symbol attribute structure. */
685 /* Variable attributes. */
686 unsigned allocatable:1, dimension:1, codimension:1, external:1, intrinsic:1,
687 optional:1, pointer:1, target:1, value:1, volatile_:1, temporary:1,
688 dummy:1, result:1, assign:1, threadprivate:1, not_always_present:1,
689 implied_index:1, subref_array_pointer:1, proc_pointer:1, asynchronous:1,
692 /* For CLASS containers, the pointer attribute is sometimes set internally
693 even though it was not directly specified. In this case, keep the
694 "real" (original) value here. */
695 unsigned class_pointer:1;
697 ENUM_BITFIELD (save_state) save:2;
699 unsigned data:1, /* Symbol is named in a DATA statement. */
700 is_protected:1, /* Symbol has been marked as protected. */
701 use_assoc:1, /* Symbol has been use-associated. */
702 use_only:1, /* Symbol has been use-associated, with ONLY. */
703 use_rename:1, /* Symbol has been use-associated and renamed. */
704 imported:1, /* Symbol has been associated by IMPORT. */
705 host_assoc:1; /* Symbol has been host associated. */
707 unsigned in_namelist:1, in_common:1, in_equivalence:1;
708 unsigned function:1, subroutine:1, procedure:1;
709 unsigned generic:1, generic_copy:1;
710 unsigned implicit_type:1; /* Type defined via implicit rules. */
711 unsigned untyped:1; /* No implicit type could be found. */
713 unsigned is_bind_c:1; /* say if is bound to C. */
714 unsigned extension:8; /* extension level of a derived type. */
715 unsigned is_class:1; /* is a CLASS container. */
716 unsigned class_ok:1; /* is a CLASS object with correct attributes. */
717 unsigned vtab:1; /* is a derived type vtab, pointed to by CLASS objects. */
718 unsigned vtype:1; /* is a derived type of a vtab. */
720 /* These flags are both in the typespec and attribute. The attribute
721 list is what gets read from/written to a module file. The typespec
722 is created from a decl being processed. */
723 unsigned is_c_interop:1; /* It's c interoperable. */
724 unsigned is_iso_c:1; /* Symbol is from iso_c_binding. */
726 /* Function/subroutine attributes */
727 unsigned sequence:1, elemental:1, pure:1, recursive:1;
728 unsigned unmaskable:1, masked:1, contained:1, mod_proc:1, abstract:1;
730 /* This is set if a contained procedure could be declared pure. This is
731 used for certain optimizations that require the result or arguments
732 cannot alias. Note that this is zero for PURE procedures. */
733 unsigned implicit_pure:1;
735 /* This is set if the subroutine doesn't return. Currently, this
736 is only possible for intrinsic subroutines. */
739 /* Set if this procedure is an alternate entry point. These procedures
740 don't have any code associated, and the backend will turn them into
741 thunks to the master function. */
744 /* Set if this is the master function for a procedure with multiple
746 unsigned entry_master:1;
748 /* Set if this is the master function for a function with multiple
749 entry points where characteristics of the entry points differ. */
750 unsigned mixed_entry_master:1;
752 /* Set if a function must always be referenced by an explicit interface. */
753 unsigned always_explicit:1;
755 /* Set if the symbol has been referenced in an expression. No further
756 modification of type or type parameters is permitted. */
757 unsigned referenced:1;
759 /* Set if this is the symbol for the main program. */
760 unsigned is_main_program:1;
762 /* Mutually exclusive multibit attributes. */
763 ENUM_BITFIELD (gfc_access) access:2;
764 ENUM_BITFIELD (sym_intent) intent:2;
765 ENUM_BITFIELD (sym_flavor) flavor:4;
766 ENUM_BITFIELD (ifsrc) if_source:2;
768 ENUM_BITFIELD (procedure_type) proc:3;
770 /* Special attributes for Cray pointers, pointees. */
771 unsigned cray_pointer:1, cray_pointee:1;
773 /* The symbol is a derived type with allocatable components, pointer
774 components or private components, procedure pointer components,
775 possibly nested. zero_comp is true if the derived type has no
777 unsigned alloc_comp:1, pointer_comp:1, proc_pointer_comp:1,
778 private_comp:1, zero_comp:1, coarray_comp:1, lock_comp:1;
780 /* This is a temporary selector for SELECT TYPE. */
781 unsigned select_type_temporary:1;
783 /* Attributes set by compiler extensions (!GCC$ ATTRIBUTES). */
784 unsigned ext_attr:EXT_ATTR_NUM;
786 /* The namespace where the attribute has been set. */
787 struct gfc_namespace *volatile_ns, *asynchronous_ns;
792 /* We need to store source lines as sequences of multibyte source
793 characters. We define here a type wide enough to hold any multibyte
794 source character, just like libcpp does. A 32-bit type is enough. */
796 #if HOST_BITS_PER_INT >= 32
797 typedef unsigned int gfc_char_t;
798 #elif HOST_BITS_PER_LONG >= 32
799 typedef unsigned long gfc_char_t;
800 #elif defined(HAVE_LONG_LONG) && (HOST_BITS_PER_LONGLONG >= 32)
801 typedef unsigned long long gfc_char_t;
803 # error "Cannot find an integer type with at least 32 bits"
807 /* The following three structures are used to identify a location in
810 gfc_file is used to maintain a tree of the source files and how
811 they include each other
813 gfc_linebuf holds a single line of source code and information
814 which file it resides in
816 locus point to the sourceline and the character in the source
820 typedef struct gfc_file
822 struct gfc_file *next, *up;
823 int inclusion_line, line;
827 typedef struct gfc_linebuf
829 source_location location;
830 struct gfc_file *file;
831 struct gfc_linebuf *next;
839 #define gfc_linebuf_header_size (offsetof (gfc_linebuf, line))
841 #define gfc_linebuf_linenum(LBUF) (LOCATION_LINE ((LBUF)->location))
849 /* In order for the "gfc" format checking to work correctly, you must
850 have declared a typedef locus first. */
851 #if GCC_VERSION >= 4001
852 #define ATTRIBUTE_GCC_GFC(m, n) __attribute__ ((__format__ (__gcc_gfc__, m, n))) ATTRIBUTE_NONNULL(m)
854 #define ATTRIBUTE_GCC_GFC(m, n) ATTRIBUTE_NONNULL(m)
858 /* Suppress error messages or re-enable them. */
860 void gfc_push_suppress_errors (void);
861 void gfc_pop_suppress_errors (void);
864 /* Character length structures hold the expression that gives the
865 length of a character variable. We avoid putting these into
866 gfc_typespec because doing so prevents us from doing structure
867 copies and forces us to deallocate any typespecs we create, as well
868 as structures that contain typespecs. They also can have multiple
869 character typespecs pointing to them.
871 These structures form a singly linked list within the current
872 namespace and are deallocated with the namespace. It is possible to
873 end up with gfc_charlen structures that have nothing pointing to them. */
875 typedef struct gfc_charlen
877 struct gfc_expr *length;
878 struct gfc_charlen *next;
879 bool length_from_typespec; /* Length from explicit array ctor typespec? */
881 tree passed_length; /* Length argument explicitly passed. */
887 #define gfc_get_charlen() XCNEW (gfc_charlen)
889 /* Type specification structure. */
897 struct gfc_symbol *derived; /* For derived types only. */
898 gfc_charlen *cl; /* For character types only. */
899 int pad; /* For hollerith types only. */
903 struct gfc_symbol *interface; /* For PROCEDURE declarations. */
911 /* Array specification. */
914 int rank; /* A rank of zero means that a variable is a scalar. */
916 array_type type, cotype;
917 struct gfc_expr *lower[GFC_MAX_DIMENSIONS], *upper[GFC_MAX_DIMENSIONS];
919 /* These two fields are used with the Cray Pointer extension. */
920 bool cray_pointee; /* True iff this spec belongs to a cray pointee. */
921 bool cp_was_assumed; /* AS_ASSUMED_SIZE cp arrays are converted to
922 AS_EXPLICIT, but we want to remember that we
928 #define gfc_get_array_spec() XCNEW (gfc_array_spec)
931 /* Components of derived types. */
932 typedef struct gfc_component
937 symbol_attribute attr;
941 /* Used to cache a FIELD_DECL matching this same component
942 but applied to a different backend containing type that was
943 generated by gfc_nonrestricted_type. */
944 tree norestrict_decl;
946 struct gfc_expr *initializer;
947 struct gfc_component *next;
949 /* Needed for procedure pointer components. */
950 struct gfc_formal_arglist *formal;
951 struct gfc_namespace *formal_ns;
952 struct gfc_typebound_proc *tb;
956 #define gfc_get_component() XCNEW (gfc_component)
958 /* Formal argument lists are lists of symbols. */
959 typedef struct gfc_formal_arglist
961 /* Symbol representing the argument at this position in the arglist. */
962 struct gfc_symbol *sym;
963 /* Points to the next formal argument. */
964 struct gfc_formal_arglist *next;
968 #define gfc_get_formal_arglist() XCNEW (gfc_formal_arglist)
971 /* The gfc_actual_arglist structure is for actual arguments. */
972 typedef struct gfc_actual_arglist
975 /* Alternate return label when the expr member is null. */
976 struct gfc_st_label *label;
978 /* This is set to the type of an eventual omitted optional
979 argument. This is used to determine if a hidden string length
980 argument has to be added to a function call. */
983 struct gfc_expr *expr;
984 struct gfc_actual_arglist *next;
988 #define gfc_get_actual_arglist() XCNEW (gfc_actual_arglist)
991 /* Because a symbol can belong to multiple namelists, they must be
992 linked externally to the symbol itself. */
993 typedef struct gfc_namelist
995 struct gfc_symbol *sym;
996 struct gfc_namelist *next;
1000 #define gfc_get_namelist() XCNEW (gfc_namelist)
1005 OMP_LIST_FIRSTPRIVATE,
1006 OMP_LIST_LASTPRIVATE,
1007 OMP_LIST_COPYPRIVATE,
1011 OMP_LIST_REDUCTION_FIRST = OMP_LIST_PLUS,
1023 OMP_LIST_REDUCTION_LAST = OMP_LIST_IEOR,
1027 /* Because a symbol can belong to multiple namelists, they must be
1028 linked externally to the symbol itself. */
1030 enum gfc_omp_sched_kind
1040 enum gfc_omp_default_sharing
1042 OMP_DEFAULT_UNKNOWN,
1044 OMP_DEFAULT_PRIVATE,
1046 OMP_DEFAULT_FIRSTPRIVATE
1049 typedef struct gfc_omp_clauses
1051 struct gfc_expr *if_expr;
1052 struct gfc_expr *final_expr;
1053 struct gfc_expr *num_threads;
1054 gfc_namelist *lists[OMP_LIST_NUM];
1055 enum gfc_omp_sched_kind sched_kind;
1056 struct gfc_expr *chunk_size;
1057 enum gfc_omp_default_sharing default_sharing;
1059 bool nowait, ordered, untied, mergeable;
1063 #define gfc_get_omp_clauses() XCNEW (gfc_omp_clauses)
1066 /* The gfc_st_label structure is a BBT attached to a namespace that
1067 records the usage of statement labels within that space. */
1069 typedef struct gfc_st_label
1071 BBT_HEADER(gfc_st_label);
1075 gfc_sl_type defined, referenced;
1077 struct gfc_expr *format;
1086 /* gfc_interface()-- Interfaces are lists of symbols strung together. */
1087 typedef struct gfc_interface
1089 struct gfc_symbol *sym;
1091 struct gfc_interface *next;
1095 #define gfc_get_interface() XCNEW (gfc_interface)
1097 /* User operator nodes. These are like stripped down symbols. */
1103 struct gfc_namespace *ns;
1109 /* A list of specific bindings that are associated with a generic spec. */
1110 typedef struct gfc_tbp_generic
1112 /* The parser sets specific_st, upon resolution we look for the corresponding
1113 gfc_typebound_proc and set specific for further use. */
1114 struct gfc_symtree* specific_st;
1115 struct gfc_typebound_proc* specific;
1117 struct gfc_tbp_generic* next;
1121 #define gfc_get_tbp_generic() XCNEW (gfc_tbp_generic)
1124 /* Data needed for type-bound procedures. */
1125 typedef struct gfc_typebound_proc
1127 locus where; /* Where the PROCEDURE/GENERIC definition was. */
1131 struct gfc_symtree* specific; /* The interface if DEFERRED. */
1132 gfc_tbp_generic* generic;
1137 const char* pass_arg; /* Argument-name for PASS. NULL if not specified. */
1139 /* The overridden type-bound proc (or GENERIC with this name in the
1140 parent-type) or NULL if non. */
1141 struct gfc_typebound_proc* overridden;
1143 /* Once resolved, we use the position of pass_arg in the formal arglist of
1144 the binding-target procedure to identify it. The first argument has
1145 number 1 here, the second 2, and so on. */
1146 unsigned pass_arg_num;
1148 unsigned nopass:1; /* Whether we have NOPASS (PASS otherwise). */
1149 unsigned non_overridable:1;
1150 unsigned deferred:1;
1151 unsigned is_generic:1;
1152 unsigned function:1, subroutine:1;
1153 unsigned error:1; /* Ignore it, when an error occurred during resolution. */
1159 /* Symbol nodes. These are important things. They are what the
1160 standard refers to as "entities". The possibly multiple names that
1161 refer to the same entity are accomplished by a binary tree of
1162 symtree structures that is balanced by the red-black method-- more
1163 than one symtree node can point to any given symbol. */
1165 typedef struct gfc_symbol
1167 const char *name; /* Primary name, before renaming */
1168 const char *module; /* Module this symbol came from */
1172 symbol_attribute attr;
1174 /* The formal member points to the formal argument list if the
1175 symbol is a function or subroutine name. If the symbol is a
1176 generic name, the generic member points to the list of
1179 gfc_interface *generic;
1180 gfc_access component_access;
1182 gfc_formal_arglist *formal;
1183 struct gfc_namespace *formal_ns;
1184 struct gfc_namespace *f2k_derived;
1186 struct gfc_expr *value; /* Parameter/Initializer value */
1188 struct gfc_symbol *result; /* function result symbol */
1189 gfc_component *components; /* Derived type components */
1191 /* Defined only for Cray pointees; points to their pointer. */
1192 struct gfc_symbol *cp_pointer;
1194 int entry_id; /* Used in resolve.c for entries. */
1196 /* CLASS hashed name for declared and dynamic types in the class. */
1199 struct gfc_symbol *common_next; /* Links for COMMON syms */
1201 /* This is in fact a gfc_common_head but it is only used for pointer
1202 comparisons to check if symbols are in the same common block. */
1203 struct gfc_common_head* common_head;
1205 /* Make sure setup code for dummy arguments is generated in the correct
1209 gfc_namelist *namelist, *namelist_tail;
1211 /* Change management fields. Symbols that might be modified by the
1212 current statement have the mark member nonzero and are kept in a
1213 singly linked list through the tlink field. Of these symbols,
1214 symbols with old_symbol equal to NULL are symbols created within
1215 the current statement. Otherwise, old_symbol points to a copy of
1218 struct gfc_symbol *old_symbol, *tlink;
1219 unsigned mark:1, gfc_new:1;
1220 /* Nonzero if all equivalences associated with this symbol have been
1222 unsigned equiv_built:1;
1223 /* Set if this variable is used as an index name in a FORALL. */
1224 unsigned forall_index:1;
1226 struct gfc_namespace *ns; /* namespace containing this symbol */
1230 /* Identity of the intrinsic module the symbol comes from, or
1231 INTMOD_NONE if it's not imported from a intrinsic module. */
1232 intmod_id from_intmod;
1233 /* Identity of the symbol from intrinsic modules, from enums maintained
1234 separately by each intrinsic module. Used together with from_intmod,
1235 it uniquely identifies a symbol from an intrinsic module. */
1238 /* This may be repetitive, since the typespec now has a binding
1240 const char* binding_label;
1241 /* Store a reference to the common_block, if this symbol is in one. */
1242 struct gfc_common_head *common_block;
1244 /* Link to corresponding association-list if this is an associate name. */
1245 struct gfc_association_list *assoc;
1250 /* This structure is used to keep track of symbols in common blocks. */
1251 typedef struct gfc_common_head
1254 char use_assoc, saved, threadprivate;
1255 char name[GFC_MAX_SYMBOL_LEN + 1];
1256 struct gfc_symbol *head;
1257 const char* binding_label;
1262 #define gfc_get_common_head() XCNEW (gfc_common_head)
1265 /* A list of all the alternate entry points for a procedure. */
1267 typedef struct gfc_entry_list
1269 /* The symbol for this entry point. */
1271 /* The zero-based id of this entry point. */
1273 /* The LABEL_EXPR marking this entry point. */
1275 /* The next item in the list. */
1276 struct gfc_entry_list *next;
1280 #define gfc_get_entry_list() XCNEW (gfc_entry_list)
1282 /* Lists of rename info for the USE statement. */
1284 typedef struct gfc_use_rename
1286 char local_name[GFC_MAX_SYMBOL_LEN + 1], use_name[GFC_MAX_SYMBOL_LEN + 1];
1287 struct gfc_use_rename *next;
1289 gfc_intrinsic_op op;
1294 #define gfc_get_use_rename() XCNEW (gfc_use_rename);
1296 /* A list of all USE statements in a namespace. */
1298 typedef struct gfc_use_list
1300 const char *module_name;
1304 struct gfc_use_rename *rename;
1306 /* Next USE statement. */
1307 struct gfc_use_list *next;
1311 #define gfc_get_use_list() XCNEW (gfc_use_list)
1313 /* Within a namespace, symbols are pointed to by symtree nodes that
1314 are linked together in a balanced binary tree. There can be
1315 several symtrees pointing to the same symbol node via USE
1318 typedef struct gfc_symtree
1320 BBT_HEADER (gfc_symtree);
1325 gfc_symbol *sym; /* Symbol associated with this node */
1327 gfc_common_head *common;
1328 gfc_typebound_proc *tb;
1334 /* A linked list of derived types in the namespace. */
1335 typedef struct gfc_dt_list
1337 struct gfc_symbol *derived;
1338 struct gfc_dt_list *next;
1342 #define gfc_get_dt_list() XCNEW (gfc_dt_list)
1344 /* A list of all derived types. */
1345 extern gfc_dt_list *gfc_derived_types;
1347 /* A namespace describes the contents of procedure, module, interface block
1348 or BLOCK construct. */
1349 /* ??? Anything else use these? */
1351 typedef struct gfc_namespace
1353 /* Tree containing all the symbols in this namespace. */
1354 gfc_symtree *sym_root;
1355 /* Tree containing all the user-defined operators in the namespace. */
1356 gfc_symtree *uop_root;
1357 /* Tree containing all the common blocks. */
1358 gfc_symtree *common_root;
1360 /* Tree containing type-bound procedures. */
1361 gfc_symtree *tb_sym_root;
1362 /* Type-bound user operators. */
1363 gfc_symtree *tb_uop_root;
1364 /* For derived-types, store type-bound intrinsic operators here. */
1365 gfc_typebound_proc *tb_op[GFC_INTRINSIC_OPS];
1366 /* Linked list of finalizer procedures. */
1367 struct gfc_finalizer *finalizers;
1369 /* If set_flag[letter] is set, an implicit type has been set for letter. */
1370 int set_flag[GFC_LETTERS];
1371 /* Keeps track of the implicit types associated with the letters. */
1372 gfc_typespec default_type[GFC_LETTERS];
1373 /* Store the positions of IMPLICIT statements. */
1374 locus implicit_loc[GFC_LETTERS];
1376 /* If this is a namespace of a procedure, this points to the procedure. */
1377 struct gfc_symbol *proc_name;
1378 /* If this is the namespace of a unit which contains executable
1379 code, this points to it. */
1380 struct gfc_code *code;
1382 /* Points to the equivalences set up in this namespace. */
1383 struct gfc_equiv *equiv, *old_equiv;
1385 /* Points to the equivalence groups produced by trans_common. */
1386 struct gfc_equiv_list *equiv_lists;
1388 gfc_interface *op[GFC_INTRINSIC_OPS];
1390 /* Points to the parent namespace, i.e. the namespace of a module or
1391 procedure in which the procedure belonging to this namespace is
1392 contained. The parent namespace points to this namespace either
1393 directly via CONTAINED, or indirectly via the chain built by
1395 struct gfc_namespace *parent;
1396 /* CONTAINED points to the first contained namespace. Sibling
1397 namespaces are chained via SIBLING. */
1398 struct gfc_namespace *contained, *sibling;
1400 gfc_common_head blank_common;
1401 gfc_access default_access, operator_access[GFC_INTRINSIC_OPS];
1403 gfc_st_label *st_labels;
1404 /* This list holds information about all the data initializers in
1406 struct gfc_data *data;
1408 gfc_charlen *cl_list, *old_cl_list;
1410 gfc_dt_list *derived_types;
1412 int save_all, seen_save, seen_implicit_none;
1414 /* Normally we don't need to refcount namespaces. However when we read
1415 a module containing a function with multiple entry points, this
1416 will appear as several functions with the same formal namespace. */
1419 /* A list of all alternate entry points to this procedure (or NULL). */
1420 gfc_entry_list *entries;
1422 /* A list of USE statements in this namespace. */
1423 gfc_use_list *use_stmts;
1425 /* Set to 1 if namespace is a BLOCK DATA program unit. */
1426 unsigned is_block_data:1;
1428 /* Set to 1 if namespace is an interface body with "IMPORT" used. */
1429 unsigned has_import_set:1;
1431 /* Set to 1 if resolved has been called for this namespace.
1432 Holds -1 during resolution. */
1435 /* Set to 1 if code has been generated for this namespace. */
1436 unsigned translated:1;
1438 /* Set to 1 if symbols in this namespace should be 'construct entities',
1439 i.e. for BLOCK local variables. */
1440 unsigned construct_entities:1;
1444 extern gfc_namespace *gfc_current_ns;
1445 extern gfc_namespace *gfc_global_ns_list;
1447 /* Global symbols are symbols of global scope. Currently we only use
1448 this to detect collisions already when parsing.
1449 TODO: Extend to verify procedure calls. */
1451 enum gfc_symbol_type
1453 GSYM_UNKNOWN=1, GSYM_PROGRAM, GSYM_FUNCTION, GSYM_SUBROUTINE,
1454 GSYM_MODULE, GSYM_COMMON, GSYM_BLOCK_DATA
1457 typedef struct gfc_gsymbol
1459 BBT_HEADER(gfc_gsymbol);
1462 const char *sym_name;
1463 const char *mod_name;
1464 const char *binding_label;
1465 enum gfc_symbol_type type;
1473 extern gfc_gsymbol *gfc_gsym_root;
1475 /* Information on interfaces being built. */
1478 interface_type type;
1482 gfc_intrinsic_op op;
1486 extern gfc_interface_info current_interface;
1489 /* Array reference. */
1491 enum gfc_array_ref_dimen_type
1493 DIMEN_ELEMENT = 1, DIMEN_RANGE, DIMEN_VECTOR, DIMEN_STAR, DIMEN_THIS_IMAGE, DIMEN_UNKNOWN
1496 typedef struct gfc_array_ref
1499 int dimen; /* # of components in the reference */
1501 bool in_allocate; /* For coarray checks. */
1505 locus c_where[GFC_MAX_DIMENSIONS]; /* All expressions can be NULL */
1506 struct gfc_expr *start[GFC_MAX_DIMENSIONS], *end[GFC_MAX_DIMENSIONS],
1507 *stride[GFC_MAX_DIMENSIONS];
1509 enum gfc_array_ref_dimen_type dimen_type[GFC_MAX_DIMENSIONS];
1511 struct gfc_expr *offset;
1515 #define gfc_get_array_ref() XCNEW (gfc_array_ref)
1518 /* Component reference nodes. A variable is stored as an expression
1519 node that points to the base symbol. After that, a singly linked
1520 list of component reference nodes gives the variable's complete
1521 resolution. The array_ref component may be present and comes
1522 before the component component. */
1525 { REF_ARRAY, REF_COMPONENT, REF_SUBSTRING }
1528 typedef struct gfc_ref
1534 struct gfc_array_ref ar;
1538 gfc_component *component;
1545 struct gfc_expr *start, *end; /* Substring */
1546 gfc_charlen *length;
1553 struct gfc_ref *next;
1557 #define gfc_get_ref() XCNEW (gfc_ref)
1560 /* Structures representing intrinsic symbols and their arguments lists. */
1561 typedef struct gfc_intrinsic_arg
1563 char name[GFC_MAX_SYMBOL_LEN + 1];
1566 unsigned optional:1, value:1;
1567 ENUM_BITFIELD (sym_intent) intent:2;
1568 gfc_actual_arglist *actual;
1570 struct gfc_intrinsic_arg *next;
1576 /* Specifies the various kinds of check functions used to verify the
1577 argument lists of intrinsic functions. fX with X an integer refer
1578 to check functions of intrinsics with X arguments. f1m is used for
1579 the MAX and MIN intrinsics which can have an arbitrary number of
1580 arguments, f3ml is used for the MINLOC and MAXLOC intrinsics as
1581 these have special semantics. */
1585 gfc_try (*f0)(void);
1586 gfc_try (*f1)(struct gfc_expr *);
1587 gfc_try (*f1m)(gfc_actual_arglist *);
1588 gfc_try (*f2)(struct gfc_expr *, struct gfc_expr *);
1589 gfc_try (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1590 gfc_try (*f3ml)(gfc_actual_arglist *);
1591 gfc_try (*f3red)(gfc_actual_arglist *);
1592 gfc_try (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1594 gfc_try (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1595 struct gfc_expr *, struct gfc_expr *);
1599 /* Like gfc_check_f, these specify the type of the simplification
1600 function associated with an intrinsic. The fX are just like in
1601 gfc_check_f. cc is used for type conversion functions. */
1605 struct gfc_expr *(*f0)(void);
1606 struct gfc_expr *(*f1)(struct gfc_expr *);
1607 struct gfc_expr *(*f2)(struct gfc_expr *, struct gfc_expr *);
1608 struct gfc_expr *(*f3)(struct gfc_expr *, struct gfc_expr *,
1610 struct gfc_expr *(*f4)(struct gfc_expr *, struct gfc_expr *,
1611 struct gfc_expr *, struct gfc_expr *);
1612 struct gfc_expr *(*f5)(struct gfc_expr *, struct gfc_expr *,
1613 struct gfc_expr *, struct gfc_expr *,
1615 struct gfc_expr *(*cc)(struct gfc_expr *, bt, int);
1619 /* Again like gfc_check_f, these specify the type of the resolution
1620 function associated with an intrinsic. The fX are just like in
1621 gfc_check_f. f1m is used for MIN and MAX, s1 is used for abort(). */
1625 void (*f0)(struct gfc_expr *);
1626 void (*f1)(struct gfc_expr *, struct gfc_expr *);
1627 void (*f1m)(struct gfc_expr *, struct gfc_actual_arglist *);
1628 void (*f2)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1629 void (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1631 void (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1632 struct gfc_expr *, struct gfc_expr *);
1633 void (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1634 struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1635 void (*s1)(struct gfc_code *);
1640 typedef struct gfc_intrinsic_sym
1642 const char *name, *lib_name;
1643 gfc_intrinsic_arg *formal;
1645 unsigned elemental:1, inquiry:1, transformational:1, pure:1,
1646 generic:1, specific:1, actual_ok:1, noreturn:1, conversion:1,
1651 gfc_simplify_f simplify;
1653 gfc_resolve_f resolve;
1654 struct gfc_intrinsic_sym *specific_head, *next;
1661 /* Expression nodes. The expression node types deserve explanations,
1662 since the last couple can be easily misconstrued:
1664 EXPR_OP Operator node pointing to one or two other nodes
1665 EXPR_FUNCTION Function call, symbol points to function's name
1666 EXPR_CONSTANT A scalar constant: Logical, String, Real, Int or Complex
1667 EXPR_VARIABLE An Lvalue with a root symbol and possible reference list
1668 which expresses structure, array and substring refs.
1669 EXPR_NULL The NULL pointer value (which also has a basic type).
1670 EXPR_SUBSTRING A substring of a constant string
1671 EXPR_STRUCTURE A structure constructor
1672 EXPR_ARRAY An array constructor.
1673 EXPR_COMPCALL Function (or subroutine) call of a procedure pointer
1674 component or type-bound procedure. */
1679 #define GFC_RND_MODE GMP_RNDN
1680 #define GFC_MPC_RND_MODE MPC_RNDNN
1682 typedef splay_tree gfc_constructor_base;
1684 typedef struct gfc_expr
1688 gfc_typespec ts; /* These two refer to the overall expression */
1691 mpz_t *shape; /* Can be NULL if shape is unknown at compile time */
1693 /* Nonnull for functions and structure constructors, may also used to hold the
1694 base-object for component calls. */
1695 gfc_symtree *symtree;
1701 /* Used to store the base expression in component calls, when the expression
1702 is not a variable. */
1703 struct gfc_expr *base_expr;
1705 /* is_boz is true if the integer is regarded as BOZ bitpatten and is_snan
1706 denotes a signalling not-a-number. */
1707 unsigned int is_boz : 1, is_snan : 1;
1709 /* Sometimes, when an error has been emitted, it is necessary to prevent
1710 it from recurring. */
1711 unsigned int error : 1;
1713 /* Mark an expression where a user operator has been substituted by
1714 a function call in interface.c(gfc_extend_expr). */
1715 unsigned int user_operator : 1;
1717 /* Mark an expression as being a MOLD argument of ALLOCATE. */
1718 unsigned int mold : 1;
1720 /* If an expression comes from a Hollerith constant or compile-time
1721 evaluation of a transfer statement, it may have a prescribed target-
1722 memory representation, and these cannot always be backformed from
1745 gfc_intrinsic_op op;
1747 struct gfc_expr *op1, *op2;
1753 gfc_actual_arglist *actual;
1754 const char *name; /* Points to the ultimate name of the function */
1755 gfc_intrinsic_sym *isym;
1762 gfc_actual_arglist* actual;
1764 /* Base-object, whose component was called. NULL means that it should
1765 be taken from symtree/ref. */
1766 struct gfc_expr* base_object;
1767 gfc_typebound_proc* tbp; /* Should overlap with esym. */
1769 /* For type-bound operators, we want to call PASS procedures but already
1770 have the full arglist; mark this, so that it is not extended by the
1772 unsigned ignore_pass:1;
1774 /* Do assign-calls rather than calls, that is appropriate dependency
1787 gfc_constructor_base constructor;
1795 #define gfc_get_shape(rank) (XCNEWVEC (mpz_t, (rank)))
1797 /* Structures for information associated with different kinds of
1798 numbers. The first set of integer parameters define all there is
1799 to know about a particular kind. The rest of the elements are
1800 computed from the first elements. */
1804 /* Values really representable by the target. */
1805 mpz_t huge, pedantic_min_int, min_int;
1807 int kind, radix, digits, bit_size, range;
1809 /* True if the C type of the given name maps to this precision.
1810 Note that more than one bit can be set. */
1811 unsigned int c_char : 1;
1812 unsigned int c_short : 1;
1813 unsigned int c_int : 1;
1814 unsigned int c_long : 1;
1815 unsigned int c_long_long : 1;
1819 extern gfc_integer_info gfc_integer_kinds[];
1826 /* True if the C++ type bool, C99 type _Bool, maps to this precision. */
1827 unsigned int c_bool : 1;
1831 extern gfc_logical_info gfc_logical_kinds[];
1836 mpfr_t epsilon, huge, tiny, subnormal;
1837 int kind, radix, digits, min_exponent, max_exponent;
1838 int range, precision;
1840 /* The precision of the type as reported by GET_MODE_PRECISION. */
1843 /* True if the C type of the given name maps to this precision.
1844 Note that more than one bit can be set. */
1845 unsigned int c_float : 1;
1846 unsigned int c_double : 1;
1847 unsigned int c_long_double : 1;
1848 unsigned int c_float128 : 1;
1852 extern gfc_real_info gfc_real_kinds[];
1861 extern gfc_character_info gfc_character_kinds[];
1864 /* Equivalence structures. Equivalent lvalues are linked along the
1865 *eq pointer, equivalence sets are strung along the *next node. */
1866 typedef struct gfc_equiv
1868 struct gfc_equiv *next, *eq;
1875 #define gfc_get_equiv() XCNEW (gfc_equiv)
1877 /* Holds a single equivalence member after processing. */
1878 typedef struct gfc_equiv_info
1881 HOST_WIDE_INT offset;
1882 HOST_WIDE_INT length;
1883 struct gfc_equiv_info *next;
1886 /* Holds equivalence groups, after they have been processed. */
1887 typedef struct gfc_equiv_list
1889 gfc_equiv_info *equiv;
1890 struct gfc_equiv_list *next;
1893 /* gfc_case stores the selector list of a case statement. The *low
1894 and *high pointers can point to the same expression in the case of
1895 a single value. If *high is NULL, the selection is from *low
1896 upwards, if *low is NULL the selection is *high downwards.
1898 This structure has separate fields to allow single and double linked
1899 lists of CASEs at the same time. The singe linked list along the NEXT
1900 field is a list of cases for a single CASE label. The double linked
1901 list along the LEFT/RIGHT fields is used to detect overlap and to
1902 build a table of the cases for SELECT constructs with a CHARACTER
1905 typedef struct gfc_case
1907 /* Where we saw this case. */
1911 /* Case range values. If (low == high), it's a single value. If one of
1912 the labels is NULL, it's an unbounded case. If both are NULL, this
1913 represents the default case. */
1914 gfc_expr *low, *high;
1916 /* Only used for SELECT TYPE. */
1919 /* Next case label in the list of cases for a single CASE label. */
1920 struct gfc_case *next;
1922 /* Used for detecting overlap, and for code generation. */
1923 struct gfc_case *left, *right;
1925 /* True if this case label can never be matched. */
1930 #define gfc_get_case() XCNEW (gfc_case)
1935 gfc_expr *var, *start, *end, *step;
1939 #define gfc_get_iterator() XCNEW (gfc_iterator)
1942 /* Allocation structure for ALLOCATE, DEALLOCATE and NULLIFY statements. */
1944 typedef struct gfc_alloc
1947 struct gfc_alloc *next;
1951 #define gfc_get_alloc() XCNEW (gfc_alloc)
1956 gfc_expr *unit, *file, *status, *access, *form, *recl,
1957 *blank, *position, *action, *delim, *pad, *iostat, *iomsg, *convert,
1958 *decimal, *encoding, *round, *sign, *asynchronous, *id, *newunit;
1966 gfc_expr *unit, *status, *iostat, *iomsg;
1974 gfc_expr *unit, *iostat, *iomsg;
1982 gfc_expr *unit, *file, *iostat, *exist, *opened, *number, *named,
1983 *name, *access, *sequential, *direct, *form, *formatted,
1984 *unformatted, *recl, *nextrec, *blank, *position, *action, *read,
1985 *write, *readwrite, *delim, *pad, *iolength, *iomsg, *convert, *strm_pos,
1986 *asynchronous, *decimal, *encoding, *pending, *round, *sign, *size, *id;
1996 gfc_expr *unit, *iostat, *iomsg, *id;
1997 gfc_st_label *err, *end, *eor;
2004 gfc_expr *io_unit, *format_expr, *rec, *advance, *iostat, *size, *iomsg,
2005 *id, *pos, *asynchronous, *blank, *decimal, *delim, *pad, *round,
2006 *sign, *extra_comma, *dt_io_kind;
2008 gfc_symbol *namelist;
2009 /* A format_label of `format_asterisk' indicates the "*" format */
2010 gfc_st_label *format_label;
2011 gfc_st_label *err, *end, *eor;
2013 locus eor_where, end_where, err_where;
2018 typedef struct gfc_forall_iterator
2020 gfc_expr *var, *start, *end, *stride;
2021 struct gfc_forall_iterator *next;
2023 gfc_forall_iterator;
2026 /* Linked list to store associations in an ASSOCIATE statement. */
2028 typedef struct gfc_association_list
2030 struct gfc_association_list *next;
2032 /* Whether this is association to a variable that can be changed; otherwise,
2033 it's association to an expression and the name may not be used as
2035 unsigned variable:1;
2037 /* True if this struct is currently only linked to from a gfc_symbol rather
2038 than as part of a real list in gfc_code->ext.block.assoc. This may
2039 happen for SELECT TYPE temporaries and must be considered
2040 for memory handling. */
2041 unsigned dangling:1;
2043 char name[GFC_MAX_SYMBOL_LEN + 1];
2044 gfc_symtree *st; /* Symtree corresponding to name. */
2049 gfc_association_list;
2050 #define gfc_get_association_list() XCNEW (gfc_association_list)
2053 /* Executable statements that fill gfc_code structures. */
2056 EXEC_NOP = 1, EXEC_END_NESTED_BLOCK, EXEC_END_BLOCK, EXEC_ASSIGN,
2057 EXEC_LABEL_ASSIGN, EXEC_POINTER_ASSIGN, EXEC_CRITICAL, EXEC_ERROR_STOP,
2058 EXEC_GOTO, EXEC_CALL, EXEC_COMPCALL, EXEC_ASSIGN_CALL, EXEC_RETURN,
2059 EXEC_ENTRY, EXEC_PAUSE, EXEC_STOP, EXEC_CONTINUE, EXEC_INIT_ASSIGN,
2060 EXEC_IF, EXEC_ARITHMETIC_IF, EXEC_DO, EXEC_DO_CONCURRENT, EXEC_DO_WHILE,
2061 EXEC_SELECT, EXEC_BLOCK, EXEC_FORALL, EXEC_WHERE, EXEC_CYCLE, EXEC_EXIT,
2062 EXEC_CALL_PPC, EXEC_ALLOCATE, EXEC_DEALLOCATE, EXEC_END_PROCEDURE,
2063 EXEC_SELECT_TYPE, EXEC_SYNC_ALL, EXEC_SYNC_MEMORY, EXEC_SYNC_IMAGES,
2064 EXEC_OPEN, EXEC_CLOSE, EXEC_WAIT,
2065 EXEC_READ, EXEC_WRITE, EXEC_IOLENGTH, EXEC_TRANSFER, EXEC_DT_END,
2066 EXEC_BACKSPACE, EXEC_ENDFILE, EXEC_INQUIRE, EXEC_REWIND, EXEC_FLUSH,
2067 EXEC_LOCK, EXEC_UNLOCK,
2068 EXEC_OMP_CRITICAL, EXEC_OMP_DO, EXEC_OMP_FLUSH, EXEC_OMP_MASTER,
2069 EXEC_OMP_ORDERED, EXEC_OMP_PARALLEL, EXEC_OMP_PARALLEL_DO,
2070 EXEC_OMP_PARALLEL_SECTIONS, EXEC_OMP_PARALLEL_WORKSHARE,
2071 EXEC_OMP_SECTIONS, EXEC_OMP_SINGLE, EXEC_OMP_WORKSHARE,
2072 EXEC_OMP_ATOMIC, EXEC_OMP_BARRIER, EXEC_OMP_END_NOWAIT,
2073 EXEC_OMP_END_SINGLE, EXEC_OMP_TASK, EXEC_OMP_TASKWAIT,
2080 GFC_OMP_ATOMIC_UPDATE,
2081 GFC_OMP_ATOMIC_READ,
2082 GFC_OMP_ATOMIC_WRITE,
2083 GFC_OMP_ATOMIC_CAPTURE
2087 typedef struct gfc_code
2091 struct gfc_code *block, *next;
2094 gfc_st_label *here, *label1, *label2, *label3;
2095 gfc_symtree *symtree;
2096 gfc_expr *expr1, *expr2, *expr3, *expr4;
2097 /* A name isn't sufficient to identify a subroutine, we need the actual
2098 symbol for the interface definition.
2099 const char *sub_name; */
2100 gfc_symbol *resolved_sym;
2101 gfc_intrinsic_sym *resolved_isym;
2105 gfc_actual_arglist *actual;
2106 gfc_iterator *iterator;
2118 gfc_association_list *assoc;
2119 gfc_case *case_list;
2125 gfc_filepos *filepos;
2126 gfc_inquire *inquire;
2129 gfc_forall_iterator *forall_iterator;
2130 struct gfc_code *which_construct;
2132 gfc_entry_list *entry;
2133 gfc_omp_clauses *omp_clauses;
2134 const char *omp_name;
2135 gfc_namelist *omp_namelist;
2137 gfc_omp_atomic_op omp_atomic;
2139 ext; /* Points to additional structures required by statement */
2141 /* Cycle and break labels in constructs. */
2148 /* Storage for DATA statements. */
2149 typedef struct gfc_data_variable
2153 struct gfc_data_variable *list, *next;
2158 typedef struct gfc_data_value
2162 struct gfc_data_value *next;
2167 typedef struct gfc_data
2169 gfc_data_variable *var;
2170 gfc_data_value *value;
2173 struct gfc_data *next;
2178 /* Structure for holding compile options */
2182 gfc_source_form source_form;
2183 /* Maximum line lengths in fixed- and free-form source, respectively.
2184 When fixed_line_length or free_line_length are 0, the whole line is used,
2185 regardless of length.
2187 If the user requests a fixed_line_length <7 then gfc_init_options()
2188 emits a fatal error. */
2189 int fixed_line_length;
2190 int free_line_length;
2191 /* Maximum number of continuation lines in fixed- and free-form source,
2193 int max_continue_fixed;
2194 int max_continue_free;
2195 int max_identifier_length;
2196 int dump_fortran_original;
2197 int dump_fortran_optimized;
2201 int gfc_warn_conversion;
2202 int warn_conversion_extra;
2203 int warn_function_elimination;
2204 int warn_implicit_interface;
2205 int warn_implicit_procedure;
2206 int warn_line_truncation;
2207 int warn_surprising;
2210 int warn_intrinsic_shadow;
2211 int warn_intrinsics_std;
2212 int warn_character_truncation;
2213 int warn_array_temp;
2214 int warn_align_commons;
2215 int warn_real_q_constant;
2216 int warn_unused_dummy_argument;
2219 int flag_all_intrinsics;
2220 int flag_default_double;
2221 int flag_default_integer;
2222 int flag_default_real;
2223 int flag_integer4_kind;
2224 int flag_real4_kind;
2225 int flag_real8_kind;
2227 int flag_underscoring;
2228 int flag_second_underscore;
2229 int flag_implicit_none;
2230 int flag_max_stack_var_size;
2231 int flag_max_array_constructor;
2232 int flag_range_check;
2233 int flag_pack_derived;
2234 int flag_repack_arrays;
2235 int flag_preprocessed;
2240 int flag_allow_leading_underscore;
2241 int flag_external_blas;
2242 int blas_matmul_limit;
2243 int flag_cray_pointer;
2245 int gfc_flag_openmp;
2247 int flag_stack_arrays;
2248 int flag_module_private;
2250 int flag_init_local_zero;
2251 int flag_init_integer;
2252 int flag_init_integer_value;
2254 int flag_init_logical;
2255 int flag_init_character;
2256 char flag_init_character_value;
2257 int flag_align_commons;
2258 int flag_whole_file;
2259 int flag_protect_parens;
2260 int flag_realloc_lhs;
2261 int flag_aggressive_function_elimination;
2262 int flag_frontend_optimize;
2266 gfc_fcoarray coarray;
2272 int max_subrecord_length;
2276 extern gfc_option_t gfc_option;
2278 /* Constructor nodes for array and structure constructors. */
2279 typedef struct gfc_constructor
2281 gfc_constructor_base base;
2282 mpz_t offset; /* Offset within a constructor, used as
2286 gfc_iterator *iterator;
2291 gfc_component *component; /* Record the component being initialized. */
2294 mpz_t repeat; /* Record the repeat number of initial values in data
2295 statement like "data a/5*10/". */
2300 typedef struct iterator_stack
2302 gfc_symtree *variable;
2304 struct iterator_stack *prev;
2307 extern iterator_stack *iter_stack;
2310 /* Used for (possibly nested) SELECT TYPE statements. */
2311 typedef struct gfc_select_type_stack
2313 gfc_symbol *selector; /* Current selector variable. */
2314 gfc_symtree *tmp; /* Current temporary variable. */
2315 struct gfc_select_type_stack *prev; /* Previous element on stack. */
2317 gfc_select_type_stack;
2318 extern gfc_select_type_stack *select_type_stack;
2319 #define gfc_get_select_type_stack() XCNEW (gfc_select_type_stack)
2322 /* Node in the linked list used for storing finalizer procedures. */
2324 typedef struct gfc_finalizer
2326 struct gfc_finalizer* next;
2327 locus where; /* Where the FINAL declaration occurred. */
2329 /* Up to resolution, we want the gfc_symbol, there we lookup the corresponding
2330 symtree and later need only that. This way, we can access and call the
2331 finalizers from every context as they should be "always accessible". I
2332 don't make this a union because we need the information whether proc_sym is
2333 still referenced or not for dereferencing it on deleting a gfc_finalizer
2335 gfc_symbol* proc_sym;
2336 gfc_symtree* proc_tree;
2339 #define gfc_get_finalizer() XCNEW (gfc_finalizer)
2342 /************************ Function prototypes *************************/
2345 bool gfc_in_match_data (void);
2346 match gfc_match_char_spec (gfc_typespec *);
2349 void gfc_scanner_done_1 (void);
2350 void gfc_scanner_init_1 (void);
2352 void gfc_add_include_path (const char *, bool, bool);
2353 void gfc_add_intrinsic_modules_path (const char *);
2354 void gfc_release_include_path (void);
2355 FILE *gfc_open_included_file (const char *, bool, bool);
2356 FILE *gfc_open_intrinsic_module (const char *);
2358 int gfc_at_end (void);
2359 int gfc_at_eof (void);
2360 int gfc_at_bol (void);
2361 int gfc_at_eol (void);
2362 void gfc_advance_line (void);
2363 int gfc_check_include (void);
2364 int gfc_define_undef_line (void);
2366 int gfc_wide_is_printable (gfc_char_t);
2367 int gfc_wide_is_digit (gfc_char_t);
2368 int gfc_wide_fits_in_byte (gfc_char_t);
2369 gfc_char_t gfc_wide_tolower (gfc_char_t);
2370 gfc_char_t gfc_wide_toupper (gfc_char_t);
2371 size_t gfc_wide_strlen (const gfc_char_t *);
2372 int gfc_wide_strncasecmp (const gfc_char_t *, const char *, size_t);
2373 gfc_char_t *gfc_wide_memset (gfc_char_t *, gfc_char_t, size_t);
2374 char *gfc_widechar_to_char (const gfc_char_t *, int);
2375 gfc_char_t *gfc_char_to_widechar (const char *);
2377 #define gfc_get_wide_string(n) XCNEWVEC (gfc_char_t, n)
2379 void gfc_skip_comments (void);
2380 gfc_char_t gfc_next_char_literal (gfc_instring);
2381 gfc_char_t gfc_next_char (void);
2382 char gfc_next_ascii_char (void);
2383 gfc_char_t gfc_peek_char (void);
2384 char gfc_peek_ascii_char (void);
2385 void gfc_error_recovery (void);
2386 void gfc_gobble_whitespace (void);
2387 gfc_try gfc_new_file (void);
2388 const char * gfc_read_orig_filename (const char *, const char **);
2390 extern gfc_source_form gfc_current_form;
2391 extern const char *gfc_source_file;
2392 extern locus gfc_current_locus;
2394 void gfc_start_source_files (void);
2395 void gfc_end_source_files (void);
2398 int gfc_terminal_width (void);
2399 void gfc_clear_ts (gfc_typespec *);
2400 FILE *gfc_open_file (const char *);
2401 const char *gfc_basic_typename (bt);
2402 const char *gfc_typename (gfc_typespec *);
2403 const char *gfc_op2string (gfc_intrinsic_op);
2404 const char *gfc_code2string (const mstring *, int);
2405 int gfc_string2code (const mstring *, const char *);
2406 const char *gfc_intent_string (sym_intent);
2408 void gfc_init_1 (void);
2409 void gfc_init_2 (void);
2410 void gfc_done_1 (void);
2411 void gfc_done_2 (void);
2413 int get_c_kind (const char *, CInteropKind_t *);
2416 unsigned int gfc_option_lang_mask (void);
2417 void gfc_init_options_struct (struct gcc_options *);
2418 void gfc_init_options (unsigned int,
2419 struct cl_decoded_option *);
2420 bool gfc_handle_option (size_t, const char *, int, int, location_t,
2421 const struct cl_option_handlers *);
2422 bool gfc_post_options (const char **);
2423 char *gfc_get_option_string (void);
2426 void gfc_maybe_initialize_eh (void);
2429 const char * gfc_get_string (const char *, ...) ATTRIBUTE_PRINTF_1;
2430 bool gfc_find_sym_in_expr (gfc_symbol *, gfc_expr *);
2434 typedef struct gfc_error_buf
2437 size_t allocated, index;
2441 void gfc_error_init_1 (void);
2442 void gfc_buffer_error (int);
2444 const char *gfc_print_wide_char (gfc_char_t);
2446 void gfc_warning (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2447 void gfc_warning_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2448 void gfc_clear_warning (void);
2449 void gfc_warning_check (void);
2451 void gfc_error (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2452 void gfc_error_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2453 void gfc_fatal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2454 void gfc_internal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2455 void gfc_clear_error (void);
2456 int gfc_error_check (void);
2457 int gfc_error_flag_test (void);
2459 notification gfc_notification_std (int);
2460 gfc_try gfc_notify_std (int, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
2462 /* A general purpose syntax error. */
2463 #define gfc_syntax_error(ST) \
2464 gfc_error ("Syntax error in %s statement at %C", gfc_ascii_statement (ST));
2466 void gfc_push_error (gfc_error_buf *);
2467 void gfc_pop_error (gfc_error_buf *);
2468 void gfc_free_error (gfc_error_buf *);
2470 void gfc_get_errors (int *, int *);
2471 void gfc_errors_to_warnings (int);
2474 void gfc_arith_init_1 (void);
2475 void gfc_arith_done_1 (void);
2476 arith gfc_check_integer_range (mpz_t p, int kind);
2477 bool gfc_check_character_range (gfc_char_t, int);
2480 gfc_try gfc_check_any_c_kind (gfc_typespec *);
2481 int gfc_validate_kind (bt, int, bool);
2482 int gfc_get_int_kind_from_width_isofortranenv (int size);
2483 int gfc_get_real_kind_from_width_isofortranenv (int size);
2484 tree gfc_get_derived_type (gfc_symbol * derived);
2485 extern int gfc_index_integer_kind;
2486 extern int gfc_default_integer_kind;
2487 extern int gfc_max_integer_kind;
2488 extern int gfc_default_real_kind;
2489 extern int gfc_default_double_kind;
2490 extern int gfc_default_character_kind;
2491 extern int gfc_default_logical_kind;
2492 extern int gfc_default_complex_kind;
2493 extern int gfc_c_int_kind;
2494 extern int gfc_atomic_int_kind;
2495 extern int gfc_atomic_logical_kind;
2496 extern int gfc_intio_kind;
2497 extern int gfc_charlen_int_kind;
2498 extern int gfc_numeric_storage_size;
2499 extern int gfc_character_storage_size;
2502 void gfc_clear_new_implicit (void);
2503 gfc_try gfc_add_new_implicit_range (int, int);
2504 gfc_try gfc_merge_new_implicit (gfc_typespec *);
2505 void gfc_set_implicit_none (void);
2506 void gfc_check_function_type (gfc_namespace *);
2507 bool gfc_is_intrinsic_typename (const char *);
2509 gfc_typespec *gfc_get_default_type (const char *, gfc_namespace *);
2510 gfc_try gfc_set_default_type (gfc_symbol *, int, gfc_namespace *);
2512 void gfc_set_sym_referenced (gfc_symbol *);
2514 gfc_try gfc_add_attribute (symbol_attribute *, locus *);
2515 gfc_try gfc_add_ext_attribute (symbol_attribute *, ext_attr_id_t, locus *);
2516 gfc_try gfc_add_allocatable (symbol_attribute *, locus *);
2517 gfc_try gfc_add_codimension (symbol_attribute *, const char *, locus *);
2518 gfc_try gfc_add_contiguous (symbol_attribute *, const char *, locus *);
2519 gfc_try gfc_add_dimension (symbol_attribute *, const char *, locus *);
2520 gfc_try gfc_add_external (symbol_attribute *, locus *);
2521 gfc_try gfc_add_intrinsic (symbol_attribute *, locus *);
2522 gfc_try gfc_add_optional (symbol_attribute *, locus *);
2523 gfc_try gfc_add_pointer (symbol_attribute *, locus *);
2524 gfc_try gfc_add_cray_pointer (symbol_attribute *, locus *);
2525 gfc_try gfc_add_cray_pointee (symbol_attribute *, locus *);
2526 match gfc_mod_pointee_as (gfc_array_spec *);
2527 gfc_try gfc_add_protected (symbol_attribute *, const char *, locus *);
2528 gfc_try gfc_add_result (symbol_attribute *, const char *, locus *);
2529 gfc_try gfc_add_save (symbol_attribute *, save_state, const char *, locus *);
2530 gfc_try gfc_add_threadprivate (symbol_attribute *, const char *, locus *);
2531 gfc_try gfc_add_saved_common (symbol_attribute *, locus *);
2532 gfc_try gfc_add_target (symbol_attribute *, locus *);
2533 gfc_try gfc_add_dummy (symbol_attribute *, const char *, locus *);
2534 gfc_try gfc_add_generic (symbol_attribute *, const char *, locus *);
2535 gfc_try gfc_add_common (symbol_attribute *, locus *);
2536 gfc_try gfc_add_in_common (symbol_attribute *, const char *, locus *);
2537 gfc_try gfc_add_in_equivalence (symbol_attribute *, const char *, locus *);
2538 gfc_try gfc_add_data (symbol_attribute *, const char *, locus *);
2539 gfc_try gfc_add_in_namelist (symbol_attribute *, const char *, locus *);
2540 gfc_try gfc_add_sequence (symbol_attribute *, const char *, locus *);
2541 gfc_try gfc_add_elemental (symbol_attribute *, locus *);
2542 gfc_try gfc_add_pure (symbol_attribute *, locus *);
2543 gfc_try gfc_add_recursive (symbol_attribute *, locus *);
2544 gfc_try gfc_add_function (symbol_attribute *, const char *, locus *);
2545 gfc_try gfc_add_subroutine (symbol_attribute *, const char *, locus *);
2546 gfc_try gfc_add_volatile (symbol_attribute *, const char *, locus *);
2547 gfc_try gfc_add_asynchronous (symbol_attribute *, const char *, locus *);
2548 gfc_try gfc_add_proc (symbol_attribute *attr, const char *name, locus *where);
2549 gfc_try gfc_add_abstract (symbol_attribute* attr, locus* where);
2551 gfc_try gfc_add_access (symbol_attribute *, gfc_access, const char *, locus *);
2552 gfc_try gfc_add_is_bind_c (symbol_attribute *, const char *, locus *, int);
2553 gfc_try gfc_add_extension (symbol_attribute *, locus *);
2554 gfc_try gfc_add_value (symbol_attribute *, const char *, locus *);
2555 gfc_try gfc_add_flavor (symbol_attribute *, sym_flavor, const char *, locus *);
2556 gfc_try gfc_add_entry (symbol_attribute *, const char *, locus *);
2557 gfc_try gfc_add_procedure (symbol_attribute *, procedure_type,
2558 const char *, locus *);
2559 gfc_try gfc_add_intent (symbol_attribute *, sym_intent, locus *);
2560 gfc_try gfc_add_explicit_interface (gfc_symbol *, ifsrc,
2561 gfc_formal_arglist *, locus *);
2562 gfc_try gfc_add_type (gfc_symbol *, gfc_typespec *, locus *);
2564 void gfc_clear_attr (symbol_attribute *);
2565 gfc_try gfc_missing_attr (symbol_attribute *, locus *);
2566 gfc_try gfc_copy_attr (symbol_attribute *, symbol_attribute *, locus *);
2568 gfc_try gfc_add_component (gfc_symbol *, const char *, gfc_component **);
2569 gfc_symbol *gfc_use_derived (gfc_symbol *);
2570 gfc_symtree *gfc_use_derived_tree (gfc_symtree *);
2571 gfc_component *gfc_find_component (gfc_symbol *, const char *, bool, bool);
2573 gfc_st_label *gfc_get_st_label (int);
2574 void gfc_free_st_label (gfc_st_label *);
2575 void gfc_define_st_label (gfc_st_label *, gfc_sl_type, locus *);
2576 gfc_try gfc_reference_st_label (gfc_st_label *, gfc_sl_type);
2578 gfc_namespace *gfc_get_namespace (gfc_namespace *, int);
2579 gfc_symtree *gfc_new_symtree (gfc_symtree **, const char *);
2580 gfc_symtree *gfc_find_symtree (gfc_symtree *, const char *);
2581 void gfc_delete_symtree (gfc_symtree **, const char *);
2582 gfc_symtree *gfc_get_unique_symtree (gfc_namespace *);
2583 gfc_user_op *gfc_get_uop (const char *);
2584 gfc_user_op *gfc_find_uop (const char *, gfc_namespace *);
2585 void gfc_free_symbol (gfc_symbol *);
2586 void gfc_release_symbol (gfc_symbol *);
2587 gfc_symbol *gfc_new_symbol (const char *, gfc_namespace *);
2588 gfc_symtree* gfc_find_symtree_in_proc (const char *, gfc_namespace *);
2589 int gfc_find_symbol (const char *, gfc_namespace *, int, gfc_symbol **);
2590 int gfc_find_sym_tree (const char *, gfc_namespace *, int, gfc_symtree **);
2591 int gfc_get_symbol (const char *, gfc_namespace *, gfc_symbol **);
2592 gfc_try gfc_verify_c_interop (gfc_typespec *);
2593 gfc_try gfc_verify_c_interop_param (gfc_symbol *);
2594 gfc_try verify_bind_c_sym (gfc_symbol *, gfc_typespec *, int, gfc_common_head *);
2595 gfc_try verify_bind_c_derived_type (gfc_symbol *);
2596 gfc_try verify_com_block_vars_c_interop (gfc_common_head *);
2597 void generate_isocbinding_symbol (const char *, iso_c_binding_symbol, const char *);
2598 gfc_symbol *get_iso_c_sym (gfc_symbol *, char *, const char *, int);
2599 int gfc_get_sym_tree (const char *, gfc_namespace *, gfc_symtree **, bool);
2600 int gfc_get_ha_symbol (const char *, gfc_symbol **);
2601 int gfc_get_ha_sym_tree (const char *, gfc_symtree **);
2603 void gfc_undo_symbols (void);
2604 void gfc_commit_symbols (void);
2605 void gfc_commit_symbol (gfc_symbol *);
2606 gfc_charlen *gfc_new_charlen (gfc_namespace *, gfc_charlen *);
2607 void gfc_free_charlen (gfc_charlen *, gfc_charlen *);
2608 void gfc_free_namespace (gfc_namespace *);
2610 void gfc_symbol_init_2 (void);
2611 void gfc_symbol_done_2 (void);
2613 void gfc_traverse_symtree (gfc_symtree *, void (*)(gfc_symtree *));
2614 void gfc_traverse_ns (gfc_namespace *, void (*)(gfc_symbol *));
2615 void gfc_traverse_user_op (gfc_namespace *, void (*)(gfc_user_op *));
2616 void gfc_save_all (gfc_namespace *);
2618 void gfc_enforce_clean_symbol_state (void);
2619 void gfc_free_dt_list (void);
2622 gfc_gsymbol *gfc_get_gsymbol (const char *);
2623 gfc_gsymbol *gfc_find_gsymbol (gfc_gsymbol *, const char *);
2625 gfc_typebound_proc* gfc_get_typebound_proc (gfc_typebound_proc*);
2626 gfc_symbol* gfc_get_derived_super_type (gfc_symbol*);
2627 gfc_symbol* gfc_get_ultimate_derived_super_type (gfc_symbol*);
2628 bool gfc_type_is_extension_of (gfc_symbol *, gfc_symbol *);
2629 bool gfc_type_compatible (gfc_typespec *, gfc_typespec *);
2631 void gfc_copy_formal_args (gfc_symbol *, gfc_symbol *);
2632 void gfc_copy_formal_args_intr (gfc_symbol *, gfc_intrinsic_sym *);
2633 void gfc_copy_formal_args_ppc (gfc_component *, gfc_symbol *);
2635 void gfc_free_finalizer (gfc_finalizer *el); /* Needed in resolve.c, too */
2637 gfc_try gfc_check_symbol_typed (gfc_symbol*, gfc_namespace*, bool, locus);
2638 gfc_namespace* gfc_find_proc_namespace (gfc_namespace*);
2640 bool gfc_is_associate_pointer (gfc_symbol*);
2641 gfc_symbol * gfc_find_dt_in_generic (gfc_symbol *);
2643 /* intrinsic.c -- true if working in an init-expr, false otherwise. */
2644 extern bool gfc_init_expr_flag;
2646 /* Given a symbol that we have decided is intrinsic, mark it as such
2647 by placing it into a special module that is otherwise impossible to
2650 #define gfc_intrinsic_symbol(SYM) SYM->module = gfc_get_string ("(intrinsic)")
2652 void gfc_intrinsic_init_1 (void);
2653 void gfc_intrinsic_done_1 (void);
2655 char gfc_type_letter (bt);
2656 gfc_symbol * gfc_get_intrinsic_sub_symbol (const char *);
2657 gfc_try gfc_convert_type (gfc_expr *, gfc_typespec *, int);
2658 gfc_try gfc_convert_type_warn (gfc_expr *, gfc_typespec *, int, int);
2659 gfc_try gfc_convert_chartype (gfc_expr *, gfc_typespec *);
2660 int gfc_generic_intrinsic (const char *);
2661 int gfc_specific_intrinsic (const char *);
2662 bool gfc_is_intrinsic (gfc_symbol*, int, locus);
2663 int gfc_intrinsic_actual_ok (const char *, const bool);
2664 gfc_intrinsic_sym *gfc_find_function (const char *);
2665 gfc_intrinsic_sym *gfc_find_subroutine (const char *);
2666 gfc_intrinsic_sym *gfc_intrinsic_function_by_id (gfc_isym_id);
2668 match gfc_intrinsic_func_interface (gfc_expr *, int);
2669 match gfc_intrinsic_sub_interface (gfc_code *, int);
2671 void gfc_warn_intrinsic_shadow (const gfc_symbol*, bool, bool);
2672 gfc_try gfc_check_intrinsic_standard (const gfc_intrinsic_sym*, const char**,
2675 /* match.c -- FIXME */
2676 void gfc_free_iterator (gfc_iterator *, int);
2677 void gfc_free_forall_iterator (gfc_forall_iterator *);
2678 void gfc_free_alloc_list (gfc_alloc *);
2679 void gfc_free_namelist (gfc_namelist *);
2680 void gfc_free_equiv (gfc_equiv *);
2681 void gfc_free_equiv_until (gfc_equiv *, gfc_equiv *);
2682 void gfc_free_data (gfc_data *);
2683 void gfc_free_case_list (gfc_case *);
2685 /* matchexp.c -- FIXME too? */
2686 gfc_expr *gfc_get_parentheses (gfc_expr *);
2689 struct gfc_omp_saved_state { void *ptrs[2]; int ints[1]; };
2690 void gfc_free_omp_clauses (gfc_omp_clauses *);
2691 void gfc_resolve_omp_directive (gfc_code *, gfc_namespace *);
2692 void gfc_resolve_do_iterator (gfc_code *, gfc_symbol *);
2693 void gfc_resolve_omp_parallel_blocks (gfc_code *, gfc_namespace *);
2694 void gfc_resolve_omp_do_blocks (gfc_code *, gfc_namespace *);
2695 void gfc_omp_save_and_clear_state (struct gfc_omp_saved_state *);
2696 void gfc_omp_restore_state (struct gfc_omp_saved_state *);
2699 void gfc_free_actual_arglist (gfc_actual_arglist *);
2700 gfc_actual_arglist *gfc_copy_actual_arglist (gfc_actual_arglist *);
2701 const char *gfc_extract_int (gfc_expr *, int *);
2702 bool is_subref_array (gfc_expr *);
2703 bool gfc_is_simply_contiguous (gfc_expr *, bool);
2705 gfc_expr *gfc_build_conversion (gfc_expr *);
2706 void gfc_free_ref_list (gfc_ref *);
2707 void gfc_type_convert_binary (gfc_expr *, int);
2708 int gfc_is_constant_expr (gfc_expr *);
2709 gfc_try gfc_simplify_expr (gfc_expr *, int);
2710 int gfc_has_vector_index (gfc_expr *);
2712 gfc_expr *gfc_get_expr (void);
2713 gfc_expr *gfc_get_array_expr (bt type, int kind, locus *);
2714 gfc_expr *gfc_get_null_expr (locus *);
2715 gfc_expr *gfc_get_operator_expr (locus *, gfc_intrinsic_op,gfc_expr *, gfc_expr *);
2716 gfc_expr *gfc_get_structure_constructor_expr (bt, int, locus *);
2717 gfc_expr *gfc_get_constant_expr (bt, int, locus *);
2718 gfc_expr *gfc_get_character_expr (int, locus *, const char *, int len);
2719 gfc_expr *gfc_get_int_expr (int, locus *, int);
2720 gfc_expr *gfc_get_logical_expr (int, locus *, bool);
2721 gfc_expr *gfc_get_iokind_expr (locus *, io_kind);
2723 void gfc_clear_shape (mpz_t *shape, int rank);
2724 void gfc_free_shape (mpz_t **shape, int rank);
2725 void gfc_free_expr (gfc_expr *);
2726 void gfc_replace_expr (gfc_expr *, gfc_expr *);
2727 mpz_t *gfc_copy_shape (mpz_t *, int);
2728 mpz_t *gfc_copy_shape_excluding (mpz_t *, int, gfc_expr *);
2729 gfc_expr *gfc_copy_expr (gfc_expr *);
2730 gfc_ref* gfc_copy_ref (gfc_ref*);
2732 gfc_try gfc_specification_expr (gfc_expr *);
2734 int gfc_numeric_ts (gfc_typespec *);
2735 int gfc_kind_max (gfc_expr *, gfc_expr *);
2737 gfc_try gfc_check_conformance (gfc_expr *, gfc_expr *, const char *, ...) ATTRIBUTE_PRINTF_3;
2738 gfc_try gfc_check_assign (gfc_expr *, gfc_expr *, int);
2739 gfc_try gfc_check_pointer_assign (gfc_expr *, gfc_expr *);
2740 gfc_try gfc_check_assign_symbol (gfc_symbol *, gfc_expr *);
2742 bool gfc_has_default_initializer (gfc_symbol *);
2743 gfc_expr *gfc_default_initializer (gfc_typespec *);
2744 gfc_expr *gfc_get_variable_expr (gfc_symtree *);
2745 gfc_expr * gfc_lval_expr_from_sym (gfc_symbol *);
2747 gfc_array_spec *gfc_get_full_arrayspec_from_expr (gfc_expr *expr);
2749 bool gfc_traverse_expr (gfc_expr *, gfc_symbol *,
2750 bool (*)(gfc_expr *, gfc_symbol *, int*),
2752 void gfc_expr_set_symbols_referenced (gfc_expr *);
2753 gfc_try gfc_expr_check_typed (gfc_expr*, gfc_namespace*, bool);
2754 void gfc_expr_replace_symbols (gfc_expr *, gfc_symbol *);
2755 void gfc_expr_replace_comp (gfc_expr *, gfc_component *);
2757 bool gfc_is_proc_ptr_comp (gfc_expr *, gfc_component **);
2759 bool gfc_ref_this_image (gfc_ref *ref);
2760 bool gfc_is_coindexed (gfc_expr *);
2761 bool gfc_is_coarray (gfc_expr *);
2762 int gfc_get_corank (gfc_expr *);
2763 bool gfc_has_ultimate_allocatable (gfc_expr *);
2764 bool gfc_has_ultimate_pointer (gfc_expr *);
2766 gfc_expr* gfc_build_intrinsic_call (const char*, locus, unsigned, ...);
2767 gfc_try gfc_check_vardef_context (gfc_expr*, bool, bool, const char*);
2771 extern gfc_code new_st;
2773 void gfc_clear_new_st (void);
2774 gfc_code *gfc_get_code (void);
2775 gfc_code *gfc_append_code (gfc_code *, gfc_code *);
2776 void gfc_free_statement (gfc_code *);
2777 void gfc_free_statements (gfc_code *);
2778 void gfc_free_association_list (gfc_association_list *);
2781 gfc_try gfc_resolve_expr (gfc_expr *);
2782 void gfc_resolve (gfc_namespace *);
2783 void gfc_resolve_blocks (gfc_code *, gfc_namespace *);
2784 int gfc_impure_variable (gfc_symbol *);
2785 int gfc_pure (gfc_symbol *);
2786 int gfc_implicit_pure (gfc_symbol *);
2787 int gfc_elemental (gfc_symbol *);
2788 gfc_try gfc_resolve_iterator (gfc_iterator *, bool);
2789 gfc_try find_forall_index (gfc_expr *, gfc_symbol *, int);
2790 gfc_try gfc_resolve_index (gfc_expr *, int);
2791 gfc_try gfc_resolve_dim_arg (gfc_expr *);
2792 int gfc_is_formal_arg (void);
2793 void gfc_resolve_substring_charlen (gfc_expr *);
2794 match gfc_iso_c_sub_interface(gfc_code *, gfc_symbol *);
2795 gfc_expr *gfc_expr_to_initialize (gfc_expr *);
2796 bool gfc_type_is_extensible (gfc_symbol *sym);
2800 gfc_iterator *gfc_copy_iterator (gfc_iterator *);
2802 void gfc_free_array_spec (gfc_array_spec *);
2803 gfc_array_ref *gfc_copy_array_ref (gfc_array_ref *);
2805 gfc_try gfc_set_array_spec (gfc_symbol *, gfc_array_spec *, locus *);
2806 gfc_array_spec *gfc_copy_array_spec (gfc_array_spec *);
2807 gfc_try gfc_resolve_array_spec (gfc_array_spec *, int);
2809 int gfc_compare_array_spec (gfc_array_spec *, gfc_array_spec *);
2811 void gfc_simplify_iterator_var (gfc_expr *);
2812 gfc_try gfc_expand_constructor (gfc_expr *, bool);
2813 int gfc_constant_ac (gfc_expr *);
2814 int gfc_expanded_ac (gfc_expr *);
2815 gfc_try gfc_resolve_character_array_constructor (gfc_expr *);
2816 gfc_try gfc_resolve_array_constructor (gfc_expr *);
2817 gfc_try gfc_check_constructor_type (gfc_expr *);
2818 gfc_try gfc_check_iter_variable (gfc_expr *);
2819 gfc_try gfc_check_constructor (gfc_expr *, gfc_try (*)(gfc_expr *));
2820 gfc_try gfc_array_size (gfc_expr *, mpz_t *);
2821 gfc_try gfc_array_dimen_size (gfc_expr *, int, mpz_t *);
2822 gfc_try gfc_array_ref_shape (gfc_array_ref *, mpz_t *);
2823 gfc_array_ref *gfc_find_array_ref (gfc_expr *);
2824 tree gfc_conv_array_initializer (tree type, gfc_expr *);
2825 gfc_try spec_size (gfc_array_spec *, mpz_t *);
2826 gfc_try spec_dimen_size (gfc_array_spec *, int, mpz_t *);
2827 int gfc_is_compile_time_shape (gfc_array_spec *);
2829 gfc_try gfc_ref_dimen_size (gfc_array_ref *, int dimen, mpz_t *, mpz_t *);
2832 /* interface.c -- FIXME: some of these should be in symbol.c */
2833 void gfc_free_interface (gfc_interface *);
2834 int gfc_compare_derived_types (gfc_symbol *, gfc_symbol *);
2835 int gfc_compare_types (gfc_typespec *, gfc_typespec *);
2836 int gfc_compare_interfaces (gfc_symbol*, gfc_symbol*, const char *, int, int,
2838 void gfc_check_interfaces (gfc_namespace *);
2839 void gfc_procedure_use (gfc_symbol *, gfc_actual_arglist **, locus *);
2840 void gfc_ppc_use (gfc_component *, gfc_actual_arglist **, locus *);
2841 gfc_symbol *gfc_search_interface (gfc_interface *, int,
2842 gfc_actual_arglist **);
2843 match gfc_extend_expr (gfc_expr *);
2844 void gfc_free_formal_arglist (gfc_formal_arglist *);
2845 gfc_try gfc_extend_assign (gfc_code *, gfc_namespace *);
2846 gfc_try gfc_add_interface (gfc_symbol *);
2847 gfc_interface *gfc_current_interface_head (void);
2848 void gfc_set_current_interface_head (gfc_interface *);
2849 gfc_symtree* gfc_find_sym_in_symtree (gfc_symbol*);
2850 bool gfc_arglist_matches_symbol (gfc_actual_arglist**, gfc_symbol*);
2851 bool gfc_check_operator_interface (gfc_symbol*, gfc_intrinsic_op, locus);
2852 int gfc_has_vector_subscript (gfc_expr*);
2853 gfc_intrinsic_op gfc_equivalent_op (gfc_intrinsic_op);
2854 gfc_try gfc_check_typebound_override (gfc_symtree*, gfc_symtree*);
2857 extern gfc_st_label format_asterisk;
2859 void gfc_free_open (gfc_open *);
2860 gfc_try gfc_resolve_open (gfc_open *);
2861 void gfc_free_close (gfc_close *);
2862 gfc_try gfc_resolve_close (gfc_close *);
2863 void gfc_free_filepos (gfc_filepos *);
2864 gfc_try gfc_resolve_filepos (gfc_filepos *);
2865 void gfc_free_inquire (gfc_inquire *);
2866 gfc_try gfc_resolve_inquire (gfc_inquire *);
2867 void gfc_free_dt (gfc_dt *);
2868 gfc_try gfc_resolve_dt (gfc_dt *, locus *);
2869 void gfc_free_wait (gfc_wait *);
2870 gfc_try gfc_resolve_wait (gfc_wait *);
2873 void gfc_module_init_2 (void);
2874 void gfc_module_done_2 (void);
2875 void gfc_dump_module (const char *, int);
2876 bool gfc_check_symbol_access (gfc_symbol *);
2877 void gfc_free_use_stmts (gfc_use_list *);
2880 symbol_attribute gfc_variable_attr (gfc_expr *, gfc_typespec *);
2881 symbol_attribute gfc_expr_attr (gfc_expr *);
2882 match gfc_match_rvalue (gfc_expr **);
2883 match gfc_match_varspec (gfc_expr*, int, bool, bool);
2884 int gfc_check_digit (char, int);
2885 bool gfc_is_function_return_value (gfc_symbol *, gfc_namespace *);
2886 gfc_try gfc_convert_to_structure_constructor (gfc_expr *, gfc_symbol *,
2888 gfc_actual_arglist **, bool);
2891 void gfc_generate_code (gfc_namespace *);
2892 void gfc_generate_module_code (gfc_namespace *);
2893 void gfc_init_coarray_decl (bool);
2895 /* trans-intrinsic.c */
2896 bool gfc_inline_intrinsic_function_p (gfc_expr *);
2899 typedef int (*compare_fn) (void *, void *);
2900 void gfc_insert_bbt (void *, void *, compare_fn);
2901 void gfc_delete_bbt (void *, void *, compare_fn);
2903 /* dump-parse-tree.c */
2904 void gfc_dump_parse_tree (gfc_namespace *, FILE *);
2907 gfc_try gfc_parse_file (void);
2908 void gfc_global_used (gfc_gsymbol *, locus *);
2909 gfc_namespace* gfc_build_block_ns (gfc_namespace *);
2912 int gfc_dep_compare_functions (gfc_expr *, gfc_expr *, bool);
2913 int gfc_dep_compare_expr (gfc_expr *, gfc_expr *);
2916 gfc_try gfc_check_same_strlen (const gfc_expr*, const gfc_expr*, const char*);
2917 gfc_try gfc_calculate_transfer_sizes (gfc_expr*, gfc_expr*, gfc_expr*,
2918 size_t*, size_t*, size_t*);
2921 void gfc_add_component_ref (gfc_expr *, const char *);
2922 void gfc_add_class_array_ref (gfc_expr *);
2923 #define gfc_add_data_component(e) gfc_add_component_ref(e,"_data")
2924 #define gfc_add_vptr_component(e) gfc_add_component_ref(e,"_vptr")
2925 #define gfc_add_hash_component(e) gfc_add_component_ref(e,"_hash")
2926 #define gfc_add_size_component(e) gfc_add_component_ref(e,"_size")
2927 #define gfc_add_def_init_component(e) gfc_add_component_ref(e,"_def_init")
2928 bool gfc_is_class_array_ref (gfc_expr *, bool *);
2929 bool gfc_is_class_scalar_expr (gfc_expr *);
2930 gfc_expr *gfc_class_null_initializer (gfc_typespec *);
2931 unsigned int gfc_hash_value (gfc_symbol *);
2932 gfc_try gfc_build_class_symbol (gfc_typespec *, symbol_attribute *,
2933 gfc_array_spec **, bool);
2934 gfc_symbol *gfc_find_derived_vtab (gfc_symbol *);
2935 gfc_symtree* gfc_find_typebound_proc (gfc_symbol*, gfc_try*,
2936 const char*, bool, locus*);
2937 gfc_symtree* gfc_find_typebound_user_op (gfc_symbol*, gfc_try*,
2938 const char*, bool, locus*);
2939 gfc_typebound_proc* gfc_find_typebound_intrinsic_op (gfc_symbol*, gfc_try*,
2940 gfc_intrinsic_op, bool,
2942 gfc_symtree* gfc_get_tbp_symtree (gfc_symtree**, const char*);
2944 #define CLASS_DATA(sym) sym->ts.u.derived->components
2946 /* frontend-passes.c */
2948 void gfc_run_passes (gfc_namespace *);
2950 typedef int (*walk_code_fn_t) (gfc_code **, int *, void *);
2951 typedef int (*walk_expr_fn_t) (gfc_expr **, int *, void *);
2953 int gfc_expr_walker (gfc_expr **, walk_expr_fn_t, void *);
2954 int gfc_code_walker (gfc_code **, walk_code_fn_t, walk_expr_fn_t, void *);
2956 #endif /* GCC_GFORTRAN_H */