gcc/fortran/parse.h

   1 /* Parser header
   2    Copyright (C) 2003-2022 Free Software Foundation, Inc.
   3    Contributed by Steven Bosscher
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21
  22 #ifndef GFC_PARSE_H
  23 #define GFC_PARSE_H
  24
  25 /* Enum for what the compiler is currently doing.  */
  26 enum gfc_compile_state
  27 {
  28   COMP_NONE, COMP_PROGRAM, COMP_MODULE, COMP_SUBMODULE, COMP_SUBROUTINE,
  29   COMP_FUNCTION, COMP_BLOCK_DATA, COMP_INTERFACE, COMP_DERIVED,
  30   COMP_DERIVED_CONTAINS, COMP_BLOCK, COMP_ASSOCIATE, COMP_IF,
  31   COMP_STRUCTURE, COMP_UNION, COMP_MAP,
  32   COMP_DO, COMP_SELECT, COMP_FORALL, COMP_WHERE, COMP_CONTAINS, COMP_ENUM,
  33   COMP_SELECT_TYPE, COMP_SELECT_RANK, COMP_OMP_STRUCTURED_BLOCK, COMP_CRITICAL,
  34   COMP_DO_CONCURRENT, COMP_OMP_STRICTLY_STRUCTURED_BLOCK
  35 };
  36
  37 /* Stack element for the current compilation state.  These structures
  38    are allocated as automatic variables.  */
  39 typedef struct gfc_state_data
  40 {
  41   gfc_compile_state state;
  42   gfc_symbol *sym;              /* Block name associated with this level */
  43   gfc_symtree *do_variable;     /* For DO blocks the iterator variable.  */
  44
  45   struct gfc_code *construct;
  46   struct gfc_code *head, *tail;
  47   struct gfc_state_data *previous;
  48
  49   /* Block-specific state data.  */
  50   union
  51   {
  52     gfc_st_label *end_do_label;
  53     gfc_oacc_declare *oacc_declare_clauses;
  54   }
  55   ext;
  56 }
  57 gfc_state_data;
  58
  59 extern gfc_state_data *gfc_state_stack;
  60
  61 #define gfc_current_block() (gfc_state_stack->sym)
  62 #define gfc_current_state() (gfc_state_stack->state)
  63 #define gfc_comp_struct(s) \
  64   ((s) == COMP_DERIVED || (s) == COMP_STRUCTURE || (s) == COMP_MAP)
  65
  66 int gfc_check_do_variable (gfc_symtree *);
  67 bool gfc_find_state (gfc_compile_state);
  68 gfc_state_data *gfc_enclosing_unit (gfc_compile_state *);
  69 const char *gfc_ascii_statement (gfc_statement);
  70 match gfc_match_enum (void);
  71 match gfc_match_enumerator_def (void);
  72 void gfc_free_enum_history (void);
  73 extern bool gfc_matching_function;
  74 match gfc_match_prefix (gfc_typespec *);
  75 bool is_oacc (gfc_state_data *);
  76 #endif  /* GFC_PARSE_H  */