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1 /* Parser header
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2 Copyright (C) 2003-2020 Free Software Foundation, Inc.
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3 Contributed by Steven Bosscher
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify it under
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8 the terms of the GNU General Public License as published by the Free
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9 Software Foundation; either version 3, or (at your option) any later
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10 version.
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11
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12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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21
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22 #ifndef GFC_PARSE_H
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23 #define GFC_PARSE_H
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24
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25 /* Enum for what the compiler is currently doing. */
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26 enum gfc_compile_state
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27 {
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28 COMP_NONE, COMP_PROGRAM, COMP_MODULE, COMP_SUBMODULE, COMP_SUBROUTINE,
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29 COMP_FUNCTION, COMP_BLOCK_DATA, COMP_INTERFACE, COMP_DERIVED,
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30 COMP_DERIVED_CONTAINS, COMP_BLOCK, COMP_ASSOCIATE, COMP_IF,
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31 COMP_STRUCTURE, COMP_UNION, COMP_MAP,
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32 COMP_DO, COMP_SELECT, COMP_FORALL, COMP_WHERE, COMP_CONTAINS, COMP_ENUM,
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33 COMP_SELECT_TYPE, COMP_SELECT_RANK, COMP_OMP_STRUCTURED_BLOCK, COMP_CRITICAL,
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34 COMP_DO_CONCURRENT
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35 };
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36
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37 /* Stack element for the current compilation state. These structures
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38 are allocated as automatic variables. */
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39 typedef struct gfc_state_data
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40 {
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41 gfc_compile_state state;
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42 gfc_symbol *sym; /* Block name associated with this level */
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43 gfc_symtree *do_variable; /* For DO blocks the iterator variable. */
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44
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45 struct gfc_code *construct;
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46 struct gfc_code *head, *tail;
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47 struct gfc_state_data *previous;
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48
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49 /* Block-specific state data. */
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50 union
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51 {
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52 gfc_st_label *end_do_label;
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53 gfc_oacc_declare *oacc_declare_clauses;
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54 }
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55 ext;
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56 }
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57 gfc_state_data;
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58
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59 extern gfc_state_data *gfc_state_stack;
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60
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61 #define gfc_current_block() (gfc_state_stack->sym)
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62 #define gfc_current_state() (gfc_state_stack->state)
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63 #define gfc_comp_struct(s) \
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64 ((s) == COMP_DERIVED || (s) == COMP_STRUCTURE || (s) == COMP_MAP)
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65
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66 int gfc_check_do_variable (gfc_symtree *);
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67 bool gfc_find_state (gfc_compile_state);
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68 gfc_state_data *gfc_enclosing_unit (gfc_compile_state *);
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69 const char *gfc_ascii_statement (gfc_statement);
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70 match gfc_match_enum (void);
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71 match gfc_match_enumerator_def (void);
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72 void gfc_free_enum_history (void);
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73 extern bool gfc_matching_function;
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74 match gfc_match_prefix (gfc_typespec *);
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75 bool is_oacc (gfc_state_data *);
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76 #endif /* GFC_PARSE_H */
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