gcc/fortran/parse.h

   1 /* Parser header
   2    Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
   3    Free Software Foundation, Inc.
   4    Contributed by Steven Bosscher
   5
   6 This file is part of GCC.
   7
   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
  11 version.
  12
  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
  16 for more details.
  17
  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/>.  */
  21
  22
  23 #ifndef GFC_PARSE_H
  24 #define GFC_PARSE_H
  25
  26 #include "gfortran.h"
  27
  28 /* Enum for what the compiler is currently doing.  */
  29 typedef enum
  30 {
  31   COMP_NONE, COMP_PROGRAM, COMP_MODULE, COMP_SUBROUTINE, COMP_FUNCTION,
  32   COMP_BLOCK_DATA, COMP_INTERFACE, COMP_DERIVED, COMP_IF, COMP_DO,
  33   COMP_SELECT, COMP_FORALL, COMP_WHERE, COMP_CONTAINS, COMP_ENUM,
  34   COMP_OMP_STRUCTURED_BLOCK
  35 }
  36 gfc_compile_state;
  37
  38 /* Stack element for the current compilation state.  These structures
  39    are allocated as automatic variables.  */
  40 typedef struct gfc_state_data
  41 {
  42   gfc_compile_state state;
  43   gfc_symbol *sym;              /* Block name associated with this level */
  44   gfc_symtree *do_variable;     /* For DO blocks the iterator variable.  */
  45
  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   }
  54   ext;
  55 }
  56 gfc_state_data;
  57
  58 extern gfc_state_data *gfc_state_stack;
  59
  60 #define gfc_current_block() (gfc_state_stack->sym)
  61 #define gfc_current_state() (gfc_state_stack->state)
  62
  63 int gfc_check_do_variable (gfc_symtree *);
  64 try gfc_find_state (gfc_compile_state);
  65 gfc_state_data *gfc_enclosing_unit (gfc_compile_state *);
  66 const char *gfc_ascii_statement (gfc_statement);
  67 match gfc_match_enum (void);
  68 match gfc_match_enumerator_def (void);
  69 void gfc_free_enum_history (void);
  70 extern bool gfc_matching_function;
  71 match gfc_match_prefix (gfc_typespec *);
  72 #endif  /* GFC_PARSE_H  */