1/* Parser header
2   Copyright (C) 2003-2015 Free Software Foundation, Inc.
3   Contributed by Steven Bosscher
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along 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.  */
26typedef 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}
34gfc_compile_state;
35
36/* Stack element for the current compilation state.  These structures
37   are allocated as automatic variables.  */
38typedef 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    gfc_omp_clauses *oacc_declare_clauses;
53  }
54  ext;
55}
56gfc_state_data;
57
58extern 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
63int gfc_check_do_variable (gfc_symtree *);
64bool gfc_find_state (gfc_compile_state);
65gfc_state_data *gfc_enclosing_unit (gfc_compile_state *);
66const char *gfc_ascii_statement (gfc_statement);
67match gfc_match_enum (void);
68match gfc_match_enumerator_def (void);
69void gfc_free_enum_history (void);
70extern bool gfc_matching_function;
71match gfc_match_prefix (gfc_typespec *);
72bool is_oacc (gfc_state_data *);
73#endif  /* GFC_PARSE_H  */
74