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comparison gcc/cp/parser.h @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
parents 84e7813d76e9
children
comparison
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131:84e7813d76e9 145:1830386684a0
1 /* Data structures and function exported by the C++ Parser. 1 /* Data structures and function exported by the C++ Parser.
2 Copyright (C) 2010-2018 Free Software Foundation, Inc. 2 Copyright (C) 2010-2020 Free Software Foundation, Inc.
3 3
4 This file is part of GCC. 4 This file is part of GCC.
5 5
6 GCC is free software; you can redistribute it and/or modify it 6 GCC is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by 7 under the terms of the GNU General Public License as published by
39 39
40 /* A C++ token. */ 40 /* A C++ token. */
41 41
42 struct GTY (()) cp_token { 42 struct GTY (()) cp_token {
43 /* The kind of token. */ 43 /* The kind of token. */
44 ENUM_BITFIELD (cpp_ttype) type : 8; 44 enum cpp_ttype type : 8;
45 /* If this token is a keyword, this value indicates which keyword. 45 /* If this token is a keyword, this value indicates which keyword.
46 Otherwise, this value is RID_MAX. */ 46 Otherwise, this value is RID_MAX. */
47 ENUM_BITFIELD (rid) keyword : 8; 47 enum rid keyword : 8;
48 /* Token flags. */ 48 /* Token flags. */
49 unsigned char flags; 49 unsigned char flags;
50 /* True if this token is from a context where it is implicitly extern "C" */ 50 /* True if this token is from a context where it is implicitly extern "C" */
51 BOOL_BITFIELD implicit_extern_c : 1; 51 bool implicit_extern_c : 1;
52 /* True if an error has already been reported for this token, such as a 52 /* True if an error has already been reported for this token, such as a
53 CPP_NAME token that is not a keyword (i.e., for which KEYWORD is 53 CPP_NAME token that is not a keyword (i.e., for which KEYWORD is
54 RID_MAX) iff this name was looked up and found to be ambiguous. */ 54 RID_MAX) iff this name was looked up and found to be ambiguous. */
55 BOOL_BITFIELD error_reported : 1; 55 bool error_reported : 1;
56 /* True for a token that has been purged. If a token is purged, 56 /* True for a token that has been purged. If a token is purged,
57 it is no longer a valid token and it should be considered 57 it is no longer a valid token and it should be considered
58 deleted. */ 58 deleted. */
59 BOOL_BITFIELD purged_p : 1; 59 bool purged_p : 1;
60 /* 5 unused bits. */ 60 bool tree_check_p : 1;
61 /* 4 unused bits. */
62
61 /* The location at which this token was found. */ 63 /* The location at which this token was found. */
62 location_t location; 64 location_t location;
63 /* The value associated with this token, if any. */ 65 /* The value associated with this token, if any. */
64 union cp_token_value { 66 union cp_token_value {
65 /* Used for compound tokens such as CPP_NESTED_NAME_SPECIFIER. */ 67 /* Used for compound tokens such as CPP_NESTED_NAME_SPECIFIER. */
66 struct tree_check* GTY((tag ("1"))) tree_check_value; 68 struct tree_check* GTY((tag ("true"))) tree_check_value;
67 /* Use for all other tokens. */ 69 /* Use for all other tokens. */
68 tree GTY((tag ("0"))) value; 70 tree GTY((tag ("false"))) value;
69 } GTY((desc ("(%1.type == CPP_TEMPLATE_ID)" 71 } GTY((desc ("%1.tree_check_p"))) u;
70 "|| (%1.type == CPP_NESTED_NAME_SPECIFIER)"
71 "|| (%1.type == CPP_DECLTYPE)"))) u;
72 }; 72 };
73 73
74 74
75 /* We use a stack of token pointer for saving token sets. */ 75 /* We use a stack of token pointer for saving token sets. */
76 typedef struct cp_token *cp_token_position; 76 typedef struct cp_token *cp_token_position;
96 /* A stack indicating positions at which cp_lexer_save_tokens was 96 /* A stack indicating positions at which cp_lexer_save_tokens was
97 called. The top entry is the most recent position at which we 97 called. The top entry is the most recent position at which we
98 began saving tokens. If the stack is non-empty, we are saving 98 began saving tokens. If the stack is non-empty, we are saving
99 tokens. */ 99 tokens. */
100 vec<cp_token_position> GTY ((skip)) saved_tokens; 100 vec<cp_token_position> GTY ((skip)) saved_tokens;
101
102 /* Saved pieces of end token we replaced with the eof token. */
103 enum cpp_ttype saved_type : 8;
104 enum rid saved_keyword : 8;
101 105
102 /* The next lexer in a linked list of lexers. */ 106 /* The next lexer in a linked list of lexers. */
103 struct cp_lexer *next; 107 struct cp_lexer *next;
104 108
105 /* True if we should output debugging information. */ 109 /* True if we should output debugging information. */
161 165
162 /* Non-static data members with initializers that require post-processing. 166 /* Non-static data members with initializers that require post-processing.
163 FIELD_DECLs appear in this list in declaration order. */ 167 FIELD_DECLs appear in this list in declaration order. */
164 vec<tree, va_gc> *nsdmis; 168 vec<tree, va_gc> *nsdmis;
165 169
166 /* Nested classes go in this vector, so that we can do some final 170 /* Functions with noexcept-specifiers that require post-processing. */
167 processing after parsing any NSDMIs. */ 171 vec<tree, va_gc> *noexcepts;
168 vec<tree, va_gc> *classes;
169 }; 172 };
170 173
171 174
172 /* The status of a tentative parse. */ 175 /* The status of a tentative parse. */
173 176
197 /* The next parsing context in the stack. */ 200 /* The next parsing context in the stack. */
198 struct cp_parser_context *next; 201 struct cp_parser_context *next;
199 }; 202 };
200 203
201 204
202 /* Helper data structure for parsing #pragma omp declare simd. */ 205 /* Helper data structure for parsing #pragma omp declare {simd,variant}. */
203 struct cp_omp_declare_simd_data { 206 struct cp_omp_declare_simd_data {
204 bool error_seen; /* Set if error has been reported. */ 207 bool error_seen; /* Set if error has been reported. */
205 bool fndecl_seen; /* Set if one fn decl/definition has been seen already. */ 208 bool fndecl_seen; /* Set if one fn decl/definition has been seen already. */
209 bool variant_p; /* Set for #pragma omp declare variant. */
206 vec<cp_token_cache_ptr> tokens; 210 vec<cp_token_cache_ptr> tokens;
207 tree clauses; 211 tree clauses;
208 }; 212 };
209 213
210 /* Helper data structure for parsing #pragma acc routine. */ 214 /* Helper data structure for parsing #pragma acc routine. */
280 284
281 /* TRUE if ALLOW_NON_CONSTANT_EXPRESSION_P is TRUE and something has 285 /* TRUE if ALLOW_NON_CONSTANT_EXPRESSION_P is TRUE and something has
282 been seen that makes the expression non-constant. */ 286 been seen that makes the expression non-constant. */
283 bool non_integral_constant_expression_p; 287 bool non_integral_constant_expression_p;
284 288
285 /* TRUE if local variable names and `this' are forbidden in the 289 /* Used to track if local variable names and/or `this' are forbidden
286 current context. */ 290 in the current context. */
287 bool local_variables_forbidden_p; 291 #define LOCAL_VARS_FORBIDDEN (1 << 0)
292 #define THIS_FORBIDDEN (1 << 1)
293 #define LOCAL_VARS_AND_THIS_FORBIDDEN (LOCAL_VARS_FORBIDDEN | THIS_FORBIDDEN)
294 unsigned char local_variables_forbidden_p;
288 295
289 /* TRUE if the declaration we are parsing is part of a 296 /* TRUE if the declaration we are parsing is part of a
290 linkage-specification of the form `extern string-literal 297 linkage-specification of the form `extern string-literal
291 declaration'. */ 298 declaration'. */
292 bool in_unbraced_linkage_specification_p; 299 bool in_unbraced_linkage_specification_p;
345 /* If non-NULL, then we are parsing a construct where new type 352 /* If non-NULL, then we are parsing a construct where new type
346 definitions are not permitted. The string stored here will be 353 definitions are not permitted. The string stored here will be
347 issued as an error message if a type is defined. */ 354 issued as an error message if a type is defined. */
348 const char *type_definition_forbidden_message; 355 const char *type_definition_forbidden_message;
349 356
357 /* Argument for type_definition_forbidden_message if needed. */
358 const char *type_definition_forbidden_message_arg;
359
350 /* A stack used for member functions of local classes. The lists 360 /* A stack used for member functions of local classes. The lists
351 contained in an individual entry can only be processed once the 361 contained in an individual entry can only be processed once the
352 outermost class being defined is complete. */ 362 outermost class being defined is complete. */
353 vec<cp_unparsed_functions_entry, va_gc> *unparsed_queues; 363 vec<cp_unparsed_functions_entry, va_gc> *unparsed_queues;
354 364