gcc/fortran/parse.h

   1 /* Parser header
   2    Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
   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 /* Enum for what the compiler is currently doing.  */
  27 typedef enum
  28 {
  29   COMP_NONE, COMP_PROGRAM, COMP_MODULE, COMP_SUBROUTINE, COMP_FUNCTION,
  30   COMP_BLOCK_DATA, COMP_INTERFACE, COMP_DERIVED, COMP_DERIVED_CONTAINS,
  31   COMP_BLOCK, COMP_IF,
  32   COMP_DO, COMP_SELECT, COMP_FORALL, COMP_WHERE, COMP_CONTAINS, COMP_ENUM,
  33   COMP_SELECT_TYPE, COMP_OMP_STRUCTURED_BLOCK, COMP_CRITICAL
  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 gfc_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 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 gfc_namespace* gfc_build_block_ns (gfc_namespace *);
  72 #endif  /* GFC_PARSE_H  */