gcc/fortran/parse.h

   1 /* Parser header
   2    Copyright (C) 2003, 2005, 2006 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 2, 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 COPYING.  If not, write to the Free
  19 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  20 02110-1301, USA.  */
  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
  71 #endif  /* GFC_PARSE_H  */