gcc/fortran/parse.h

   1 /* Parser header
   2    Copyright (C) 2003-2014 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 typedef enum
  27 {
  28   COMP_NONE, COMP_PROGRAM, COMP_MODULE, COMP_SUBROUTINE, COMP_FUNCTION,
  29   COMP_BLOCK_DATA, COMP_INTERFACE, COMP_DERIVED, COMP_DERIVED_CONTAINS,
  30   COMP_BLOCK, COMP_ASSOCIATE, COMP_IF,
  31   COMP_DO, COMP_SELECT, COMP_FORALL, COMP_WHERE, COMP_CONTAINS, COMP_ENUM,
  32   COMP_SELECT_TYPE, COMP_OMP_STRUCTURED_BLOCK, COMP_CRITICAL, COMP_DO_CONCURRENT
  33 }
  34 gfc_compile_state;
  35
  36 /* Stack element for the current compilation state.  These structures
  37    are allocated as automatic variables.  */
  38 typedef struct gfc_state_data
  39 {
  40   gfc_compile_state state;
  41   gfc_symbol *sym;              /* Block name associated with this level */
  42   gfc_symtree *do_variable;     /* For DO blocks the iterator variable.  */
  43
  44   struct gfc_code *construct;
  45   struct gfc_code *head, *tail;
  46   struct gfc_state_data *previous;
  47
  48   /* Block-specific state data.  */
  49   union
  50   {
  51     gfc_st_label *end_do_label;
  52   }
  53   ext;
  54 }
  55 gfc_state_data;
  56
  57 extern gfc_state_data *gfc_state_stack;
  58
  59 #define gfc_current_block() (gfc_state_stack->sym)
  60 #define gfc_current_state() (gfc_state_stack->state)
  61
  62 int gfc_check_do_variable (gfc_symtree *);
  63 bool gfc_find_state (gfc_compile_state);
  64 gfc_state_data *gfc_enclosing_unit (gfc_compile_state *);
  65 const char *gfc_ascii_statement (gfc_statement);
  66 match gfc_match_enum (void);
  67 match gfc_match_enumerator_def (void);
  68 void gfc_free_enum_history (void);
  69 extern bool gfc_matching_function;
  70 match gfc_match_prefix (gfc_typespec *);
  71 #endif  /* GFC_PARSE_H  */