gcc/fortran/parse.h

   1 /* Parser header
   2    Copyright (C) 2003 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, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, 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
  34 }
  35 gfc_compile_state;
  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 *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 try 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 const char *gfc_state_name (gfc_compile_state);
  67
  68 #endif  /* GFC_PARSE_H  */