mirror of
https://sourceware.org/git/binutils-gdb.git
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6969f124b9
This changes iterate_over_symbols to return a bool. This allows it to be reused in another context in a subsequent patch. gdb/ChangeLog 2019-09-10 Tom Tromey <tromey@adacore.com> * ada-lang.c (ada_iterate_over_symbols): Return bool. * language.h (struct language_defn) <la_iterate_over_symbols>: Return bool. * symtab.c (iterate_over_symbols): Return bool. * symtab.h (iterate_over_symbols): Return bool.
760 lines
27 KiB
C++
760 lines
27 KiB
C++
/* Source-language-related definitions for GDB.
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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Contributed by the Department of Computer Science at the State University
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of New York at Buffalo.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#if !defined (LANGUAGE_H)
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#define LANGUAGE_H 1
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#include "symtab.h"
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#include "gdbsupport/function-view.h"
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#include "expression.h"
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/* Forward decls for prototypes. */
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struct value;
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struct objfile;
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struct frame_info;
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struct ui_file;
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struct value_print_options;
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struct type_print_options;
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struct lang_varobj_ops;
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struct parser_state;
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class compile_instance;
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struct completion_match_for_lcd;
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class innermost_block_tracker;
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#define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims. */
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/* range_mode ==
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range_mode_auto: range_check set automatically to default of language.
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range_mode_manual: range_check set manually by user. */
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extern enum range_mode
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{
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range_mode_auto, range_mode_manual
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}
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range_mode;
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/* range_check ==
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range_check_on: Ranges are checked in GDB expressions, producing errors.
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range_check_warn: Ranges are checked, producing warnings.
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range_check_off: Ranges are not checked in GDB expressions. */
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extern enum range_check
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{
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range_check_off, range_check_warn, range_check_on
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}
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range_check;
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/* case_mode ==
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case_mode_auto: case_sensitivity set upon selection of scope.
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case_mode_manual: case_sensitivity set only by user. */
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extern enum case_mode
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{
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case_mode_auto, case_mode_manual
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}
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case_mode;
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/* array_ordering ==
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array_row_major: Arrays are in row major order.
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array_column_major: Arrays are in column major order. */
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extern enum array_ordering
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{
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array_row_major, array_column_major
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}
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array_ordering;
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/* case_sensitivity ==
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case_sensitive_on: Case sensitivity in name matching is used.
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case_sensitive_off: Case sensitivity in name matching is not used. */
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extern enum case_sensitivity
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{
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case_sensitive_on, case_sensitive_off
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}
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case_sensitivity;
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/* macro_expansion ==
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macro_expansion_no: No macro expansion is available.
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macro_expansion_c: C-like macro expansion is available. */
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enum macro_expansion
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{
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macro_expansion_no, macro_expansion_c
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};
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/* Per architecture (OS/ABI) language information. */
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struct language_arch_info
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{
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/* Its primitive types. This is a vector ended by a NULL pointer.
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These types can be specified by name in parsing types in
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expressions, regardless of whether the program being debugged
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actually defines such a type. */
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struct type **primitive_type_vector;
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/* Symbol wrappers around primitive_type_vector, so that the symbol lookup
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machinery can return them. */
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struct symbol **primitive_type_symbols;
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/* Type of elements of strings. */
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struct type *string_char_type;
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/* Symbol name of type to use as boolean type, if defined. */
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const char *bool_type_symbol;
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/* Otherwise, this is the default boolean builtin type. */
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struct type *bool_type_default;
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};
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/* Structure tying together assorted information about a language. */
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struct language_defn
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{
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/* Name of the language. */
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const char *la_name;
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/* Natural or official name of the language. */
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const char *la_natural_name;
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/* its symtab language-enum (defs.h). */
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enum language la_language;
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/* Default range checking. */
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enum range_check la_range_check;
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/* Default case sensitivity. */
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enum case_sensitivity la_case_sensitivity;
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/* Multi-dimensional array ordering. */
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enum array_ordering la_array_ordering;
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/* Style of macro expansion, if any, supported by this language. */
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enum macro_expansion la_macro_expansion;
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/* A NULL-terminated array of file extensions for this language.
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The extension must include the ".", like ".c". If this
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language doesn't need to provide any filename extensions, this
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may be NULL. */
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const char *const *la_filename_extensions;
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/* Definitions related to expression printing, prefixifying, and
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dumping. */
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const struct exp_descriptor *la_exp_desc;
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/* Parser function. */
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int (*la_parser) (struct parser_state *);
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/* Given an expression *EXPP created by prefixifying the result of
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la_parser, perform any remaining processing necessary to complete
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its translation. *EXPP may change; la_post_parser is responsible
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for releasing its previous contents, if necessary. If
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VOID_CONTEXT_P, then no value is expected from the expression.
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If COMPLETING is non-zero, then the expression has been parsed
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for completion, not evaluation. */
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void (*la_post_parser) (expression_up *expp, int void_context_p,
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int completing, innermost_block_tracker *tracker);
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void (*la_printchar) (int ch, struct type *chtype,
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struct ui_file * stream);
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void (*la_printstr) (struct ui_file * stream, struct type *elttype,
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const gdb_byte *string, unsigned int length,
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const char *encoding, int force_ellipses,
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const struct value_print_options *);
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void (*la_emitchar) (int ch, struct type *chtype,
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struct ui_file * stream, int quoter);
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/* Print a type using syntax appropriate for this language. */
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void (*la_print_type) (struct type *, const char *, struct ui_file *, int,
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int, const struct type_print_options *);
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/* Print a typedef using syntax appropriate for this language.
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TYPE is the underlying type. NEW_SYMBOL is the symbol naming
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the type. STREAM is the output stream on which to print. */
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void (*la_print_typedef) (struct type *type, struct symbol *new_symbol,
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struct ui_file *stream);
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/* Print a value using syntax appropriate for this language.
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TYPE is the type of the sub-object to be printed.
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EMBEDDED_OFFSET is the offset into the outermost object of the
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sub-object represented by TYPE. This is the object which this
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call should print. Note that the enclosing type is not
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available.
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ADDRESS is the address in the inferior of the enclosing object.
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STREAM is the stream on which the value is to be printed.
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RECURSE is the recursion depth. It is zero-based.
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OPTIONS are the formatting options to be used when
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printing. */
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void (*la_val_print) (struct type *type,
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int embedded_offset, CORE_ADDR address,
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struct ui_file *stream, int recurse,
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struct value *val,
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const struct value_print_options *options);
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/* Print a top-level value using syntax appropriate for this language. */
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void (*la_value_print) (struct value *, struct ui_file *,
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const struct value_print_options *);
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/* Given a symbol VAR, the corresponding block VAR_BLOCK (if any) and a
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stack frame id FRAME, read the value of the variable and return (pointer
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to a) struct value containing the value.
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VAR_BLOCK is needed if there's a possibility for VAR to be outside
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FRAME. This is what happens if FRAME correspond to a nested function
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and VAR is defined in the outer function. If callers know that VAR is
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located in FRAME or is global/static, NULL can be passed as VAR_BLOCK.
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Throw an error if the variable cannot be found. */
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struct value *(*la_read_var_value) (struct symbol *var,
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const struct block *var_block,
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struct frame_info *frame);
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/* PC is possibly an unknown languages trampoline.
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If that PC falls in a trampoline belonging to this language,
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return the address of the first pc in the real function, or 0
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if it isn't a language tramp for this language. */
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CORE_ADDR (*skip_trampoline) (struct frame_info *, CORE_ADDR);
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/* Now come some hooks for lookup_symbol. */
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/* If this is non-NULL, specifies the name that of the implicit
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local variable that refers to the current object instance. */
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const char *la_name_of_this;
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/* True if the symbols names should be stored in GDB's data structures
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for minimal/partial/full symbols using their linkage (aka mangled)
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form; false if the symbol names should be demangled first.
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Most languages implement symbol lookup by comparing the demangled
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names, in which case it is advantageous to store that information
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already demangled, and so would set this field to false.
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On the other hand, some languages have opted for doing symbol
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lookups by comparing mangled names instead, for reasons usually
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specific to the language. Those languages should set this field
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to true.
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And finally, other languages such as C or Asm do not have
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the concept of mangled vs demangled name, so those languages
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should set this field to true as well, to prevent any accidental
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demangling through an unrelated language's demangler. */
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const bool la_store_sym_names_in_linkage_form_p;
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/* This is a function that lookup_symbol will call when it gets to
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the part of symbol lookup where C looks up static and global
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variables. */
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struct block_symbol (*la_lookup_symbol_nonlocal)
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(const struct language_defn *,
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const char *,
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const struct block *,
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const domain_enum);
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/* Find the definition of the type with the given name. */
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struct type *(*la_lookup_transparent_type) (const char *);
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/* Return demangled language symbol, or NULL. */
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char *(*la_demangle) (const char *mangled, int options);
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/* Demangle a symbol according to this language's rules. Unlike
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la_demangle, this does not take any options.
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*DEMANGLED will be set by this function.
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If this function returns 0, then *DEMANGLED must always be set
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to NULL.
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If this function returns 1, the implementation may set this to
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a xmalloc'd string holding the demangled form. However, it is
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not required to. The string, if any, is owned by the caller.
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The resulting string should be of the form that will be
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installed into a symbol. */
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int (*la_sniff_from_mangled_name) (const char *mangled, char **demangled);
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/* Return class name of a mangled method name or NULL. */
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char *(*la_class_name_from_physname) (const char *physname);
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/* Table for printing expressions. */
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const struct op_print *la_op_print_tab;
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/* Zero if the language has first-class arrays. True if there are no
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array values, and array objects decay to pointers, as in C. */
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char c_style_arrays;
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/* Index to use for extracting the first element of a string. */
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char string_lower_bound;
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/* The list of characters forming word boundaries. */
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const char *(*la_word_break_characters) (void);
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/* Add to the completion tracker all symbols which are possible
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completions for TEXT. WORD is the entire command on which the
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completion is being made. If CODE is TYPE_CODE_UNDEF, then all
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symbols should be examined; otherwise, only STRUCT_DOMAIN
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symbols whose type has a code of CODE should be matched. */
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void (*la_collect_symbol_completion_matches)
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(completion_tracker &tracker,
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complete_symbol_mode mode,
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symbol_name_match_type match_type,
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const char *text,
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const char *word,
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enum type_code code);
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/* The per-architecture (OS/ABI) language information. */
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void (*la_language_arch_info) (struct gdbarch *,
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struct language_arch_info *);
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/* Print the index of an element of an array. */
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void (*la_print_array_index) (struct value *index_value,
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struct ui_file *stream,
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const struct value_print_options *options);
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/* Return non-zero if TYPE should be passed (and returned) by
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reference at the language level. */
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int (*la_pass_by_reference) (struct type *type);
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/* Obtain a string from the inferior, storing it in a newly allocated
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buffer in BUFFER, which should be freed by the caller. If the
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in- and out-parameter *LENGTH is specified at -1, the string is
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read until a null character of the appropriate width is found -
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otherwise the string is read to the length of characters specified.
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On completion, *LENGTH will hold the size of the string in characters.
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If a *LENGTH of -1 was specified it will count only actual
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characters, excluding any eventual terminating null character.
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Otherwise *LENGTH will include all characters - including any nulls.
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CHARSET will hold the encoding used in the string. */
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void (*la_get_string) (struct value *value,
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gdb::unique_xmalloc_ptr<gdb_byte> *buffer,
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int *length, struct type **chartype,
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const char **charset);
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/* Return an expression that can be used for a location
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watchpoint. TYPE is a pointer type that points to the memory
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to watch, and ADDR is the address of the watched memory. */
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gdb::unique_xmalloc_ptr<char> (*la_watch_location_expression)
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(struct type *type, CORE_ADDR addr);
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/* Return a pointer to the function that should be used to match a
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symbol name against LOOKUP_NAME, according to this language's
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rules. The matching algorithm depends on LOOKUP_NAME. For
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example, on Ada, the matching algorithm depends on the symbol
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name (wild/full/verbatim matching), and on whether we're doing
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a normal lookup or a completion match lookup.
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This field may be NULL, in which case
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default_symbol_name_matcher is used to perform the
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matching. */
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symbol_name_matcher_ftype *(*la_get_symbol_name_matcher)
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(const lookup_name_info &);
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/* Find all symbols in the current program space matching NAME in
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DOMAIN, according to this language's rules.
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The search is done in BLOCK only.
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The caller is responsible for iterating up through superblocks
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if desired.
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For each one, call CALLBACK with the symbol. If CALLBACK
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returns false, the iteration ends at that point.
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This field may not be NULL. If the language does not need any
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special processing here, 'iterate_over_symbols' should be
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used as the definition. */
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bool (*la_iterate_over_symbols)
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(const struct block *block, const lookup_name_info &name,
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domain_enum domain,
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gdb::function_view<symbol_found_callback_ftype> callback);
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/* Hash the given symbol search name. Use
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default_search_name_hash if no special treatment is
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required. */
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unsigned int (*la_search_name_hash) (const char *name);
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|
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/* Various operations on varobj. */
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const struct lang_varobj_ops *la_varobj_ops;
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|
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/* If this language allows compilation from the gdb command line,
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this method should be non-NULL. When called it should return
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an instance of struct gcc_context appropriate to the language.
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When defined this method must never return NULL; instead it
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should throw an exception on failure. The returned compiler
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instance is owned by its caller and must be deallocated by
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calling its 'destroy' method. */
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compile_instance *(*la_get_compile_instance) (void);
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/* This method must be defined if 'la_get_gcc_context' is defined.
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If 'la_get_gcc_context' is not defined, then this method is
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ignored.
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This takes the user-supplied text and returns a new bit of code
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to compile.
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INST is the compiler instance being used.
|
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INPUT is the user's input text.
|
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GDBARCH is the architecture to use.
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EXPR_BLOCK is the block in which the expression is being
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parsed.
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EXPR_PC is the PC at which the expression is being parsed. */
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std::string (*la_compute_program) (compile_instance *inst,
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const char *input,
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struct gdbarch *gdbarch,
|
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const struct block *expr_block,
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CORE_ADDR expr_pc);
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/* Return true if TYPE is a string type. */
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bool (*la_is_string_type_p) (struct type *type);
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/* This string is used by the 'set print max-depth' setting. When GDB
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replaces a struct or union (during value printing) that is "too
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deep" this string is displayed instead. */
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const char *la_struct_too_deep_ellipsis;
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};
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/* Pointer to the language_defn for our current language. This pointer
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always points to *some* valid struct; it can be used without checking
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it for validity.
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The current language affects expression parsing and evaluation
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(FIXME: it might be cleaner to make the evaluation-related stuff
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||
separate exp_opcodes for each different set of semantics. We
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||
should at least think this through more clearly with respect to
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what happens if the language is changed between parsing and
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evaluation) and printing of things like types and arrays. It does
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*not* affect symbol-reading-- each source file in a symbol-file has
|
||
its own language and we should keep track of that regardless of the
|
||
language when symbols are read. If we want some manual setting for
|
||
the language of symbol files (e.g. detecting when ".c" files are
|
||
C++), it should be a separate setting from the current_language. */
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extern const struct language_defn *current_language;
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||
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/* Pointer to the language_defn expected by the user, e.g. the language
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of main(), or the language we last mentioned in a message, or C. */
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|
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extern const struct language_defn *expected_language;
|
||
|
||
/* language_mode ==
|
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language_mode_auto: current_language automatically set upon selection
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||
of scope (e.g. stack frame)
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||
language_mode_manual: current_language set only by user. */
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|
||
extern enum language_mode
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{
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language_mode_auto, language_mode_manual
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}
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language_mode;
|
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|
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struct type *language_bool_type (const struct language_defn *l,
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struct gdbarch *gdbarch);
|
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|
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struct type *language_string_char_type (const struct language_defn *l,
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struct gdbarch *gdbarch);
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||
|
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/* Look up type NAME in language L, and return its definition for architecture
|
||
GDBARCH. Returns NULL if not found. */
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|
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struct type *language_lookup_primitive_type (const struct language_defn *l,
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struct gdbarch *gdbarch,
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const char *name);
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|
||
/* Wrapper around language_lookup_primitive_type to return the
|
||
corresponding symbol. */
|
||
|
||
struct symbol *
|
||
language_lookup_primitive_type_as_symbol (const struct language_defn *l,
|
||
struct gdbarch *gdbarch,
|
||
const char *name);
|
||
|
||
|
||
/* These macros define the behaviour of the expression
|
||
evaluator. */
|
||
|
||
/* Should we range check values against the domain of their type? */
|
||
#define RANGE_CHECK (range_check != range_check_off)
|
||
|
||
/* "cast" really means conversion. */
|
||
/* FIXME -- should be a setting in language_defn. */
|
||
#define CAST_IS_CONVERSION(LANG) ((LANG)->la_language == language_c || \
|
||
(LANG)->la_language == language_cplus || \
|
||
(LANG)->la_language == language_objc)
|
||
|
||
extern void language_info (int);
|
||
|
||
extern enum language set_language (enum language);
|
||
|
||
|
||
/* This page contains functions that return things that are
|
||
specific to languages. Each of these functions is based on
|
||
the current setting of working_lang, which the user sets
|
||
with the "set language" command. */
|
||
|
||
#define LA_PRINT_TYPE(type,varstring,stream,show,level,flags) \
|
||
(current_language->la_print_type(type,varstring,stream,show,level,flags))
|
||
|
||
#define LA_PRINT_TYPEDEF(type,new_symbol,stream) \
|
||
(current_language->la_print_typedef(type,new_symbol,stream))
|
||
|
||
#define LA_VALUE_PRINT(val,stream,options) \
|
||
(current_language->la_value_print(val,stream,options))
|
||
|
||
#define LA_PRINT_CHAR(ch, type, stream) \
|
||
(current_language->la_printchar(ch, type, stream))
|
||
#define LA_PRINT_STRING(stream, elttype, string, length, encoding, force_ellipses, options) \
|
||
(current_language->la_printstr(stream, elttype, string, length, \
|
||
encoding, force_ellipses,options))
|
||
#define LA_EMIT_CHAR(ch, type, stream, quoter) \
|
||
(current_language->la_emitchar(ch, type, stream, quoter))
|
||
#define LA_GET_STRING(value, buffer, length, chartype, encoding) \
|
||
(current_language->la_get_string(value, buffer, length, chartype, encoding))
|
||
|
||
#define LA_PRINT_ARRAY_INDEX(index_value, stream, options) \
|
||
(current_language->la_print_array_index(index_value, stream, options))
|
||
|
||
#define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK) \
|
||
(current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK))
|
||
|
||
/* Test a character to decide whether it can be printed in literal form
|
||
or needs to be printed in another representation. For example,
|
||
in C the literal form of the character with octal value 141 is 'a'
|
||
and the "other representation" is '\141'. The "other representation"
|
||
is program language dependent. */
|
||
|
||
#define PRINT_LITERAL_FORM(c) \
|
||
((c) >= 0x20 \
|
||
&& ((c) < 0x7F || (c) >= 0xA0) \
|
||
&& (!sevenbit_strings || (c) < 0x80))
|
||
|
||
/* Type predicates */
|
||
|
||
extern int pointer_type (struct type *);
|
||
|
||
/* Return true if TYPE is a string type, otherwise return false. This
|
||
default implementation only detects TYPE_CODE_STRING. */
|
||
extern bool default_is_string_type_p (struct type *type);
|
||
|
||
/* Error messages */
|
||
|
||
extern void range_error (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
|
||
|
||
/* Data: Does this value represent "truth" to the current language? */
|
||
|
||
extern int value_true (struct value *);
|
||
|
||
/* Misc: The string representing a particular enum language. */
|
||
|
||
extern enum language language_enum (const char *str);
|
||
|
||
extern const struct language_defn *language_def (enum language);
|
||
|
||
extern const char *language_str (enum language);
|
||
|
||
/* Check for a language-specific trampoline. */
|
||
|
||
extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc);
|
||
|
||
/* Return demangled language symbol, or NULL. */
|
||
extern char *language_demangle (const struct language_defn *current_language,
|
||
const char *mangled, int options);
|
||
|
||
/* A wrapper for la_sniff_from_mangled_name. The arguments and result
|
||
are as for the method. */
|
||
|
||
extern int language_sniff_from_mangled_name (const struct language_defn *lang,
|
||
const char *mangled,
|
||
char **demangled);
|
||
|
||
/* Return class name from physname, or NULL. */
|
||
extern char *language_class_name_from_physname (const struct language_defn *,
|
||
const char *physname);
|
||
|
||
/* Splitting strings into words. */
|
||
extern const char *default_word_break_characters (void);
|
||
|
||
/* Print the index of an array element using the C99 syntax. */
|
||
extern void default_print_array_index (struct value *index_value,
|
||
struct ui_file *stream,
|
||
const struct value_print_options *options);
|
||
|
||
/* Return non-zero if TYPE should be passed (and returned) by
|
||
reference at the language level. */
|
||
int language_pass_by_reference (struct type *type);
|
||
|
||
/* Return zero; by default, types are passed by value at the language
|
||
level. The target ABI may pass or return some structs by reference
|
||
independent of this. */
|
||
int default_pass_by_reference (struct type *type);
|
||
|
||
/* The default implementation of la_print_typedef. */
|
||
void default_print_typedef (struct type *type, struct symbol *new_symbol,
|
||
struct ui_file *stream);
|
||
|
||
void default_get_string (struct value *value,
|
||
gdb::unique_xmalloc_ptr<gdb_byte> *buffer,
|
||
int *length, struct type **char_type,
|
||
const char **charset);
|
||
|
||
/* Default name hashing function. */
|
||
|
||
/* Produce an unsigned hash value from SEARCH_NAME that is consistent
|
||
with strcmp_iw, strcmp, and, at least on Ada symbols, wild_match.
|
||
That is, two identifiers equivalent according to any of those three
|
||
comparison operators hash to the same value. */
|
||
extern unsigned int default_search_name_hash (const char *search_name);
|
||
|
||
void c_get_string (struct value *value,
|
||
gdb::unique_xmalloc_ptr<gdb_byte> *buffer,
|
||
int *length, struct type **char_type,
|
||
const char **charset);
|
||
|
||
/* The default implementation of la_symbol_name_matcher. Matches with
|
||
strncmp_iw. */
|
||
extern bool default_symbol_name_matcher
|
||
(const char *symbol_search_name,
|
||
const lookup_name_info &lookup_name,
|
||
completion_match_result *comp_match_res);
|
||
|
||
/* Get LANG's symbol_name_matcher method for LOOKUP_NAME. Returns
|
||
default_symbol_name_matcher if not set. LANG is used as a hint;
|
||
the function may ignore it depending on the current language and
|
||
LOOKUP_NAME. Specifically, if the current language is Ada, this
|
||
may return an Ada matcher regardless of LANG. */
|
||
symbol_name_matcher_ftype *get_symbol_name_matcher
|
||
(const language_defn *lang, const lookup_name_info &lookup_name);
|
||
|
||
/* The languages supported by GDB. */
|
||
|
||
extern const struct language_defn auto_language_defn;
|
||
extern const struct language_defn unknown_language_defn;
|
||
extern const struct language_defn minimal_language_defn;
|
||
|
||
extern const struct language_defn ada_language_defn;
|
||
extern const struct language_defn asm_language_defn;
|
||
extern const struct language_defn c_language_defn;
|
||
extern const struct language_defn cplus_language_defn;
|
||
extern const struct language_defn d_language_defn;
|
||
extern const struct language_defn f_language_defn;
|
||
extern const struct language_defn go_language_defn;
|
||
extern const struct language_defn m2_language_defn;
|
||
extern const struct language_defn objc_language_defn;
|
||
extern const struct language_defn opencl_language_defn;
|
||
extern const struct language_defn pascal_language_defn;
|
||
extern const struct language_defn rust_language_defn;
|
||
|
||
/* Save the current language and restore it upon destruction. */
|
||
|
||
class scoped_restore_current_language
|
||
{
|
||
public:
|
||
|
||
explicit scoped_restore_current_language ()
|
||
: m_lang (current_language->la_language)
|
||
{
|
||
}
|
||
|
||
~scoped_restore_current_language ()
|
||
{
|
||
set_language (m_lang);
|
||
}
|
||
|
||
scoped_restore_current_language (const scoped_restore_current_language &)
|
||
= delete;
|
||
scoped_restore_current_language &operator=
|
||
(const scoped_restore_current_language &) = delete;
|
||
|
||
private:
|
||
|
||
enum language m_lang;
|
||
};
|
||
|
||
/* If language_mode is language_mode_auto,
|
||
then switch current language to the language of SYM
|
||
and restore current language upon destruction.
|
||
|
||
Else do nothing. */
|
||
|
||
class scoped_switch_to_sym_language_if_auto
|
||
{
|
||
public:
|
||
|
||
explicit scoped_switch_to_sym_language_if_auto (const struct symbol *sym)
|
||
{
|
||
if (language_mode == language_mode_auto)
|
||
{
|
||
m_lang = current_language->la_language;
|
||
m_switched = true;
|
||
set_language (SYMBOL_LANGUAGE (sym));
|
||
}
|
||
else
|
||
{
|
||
m_switched = false;
|
||
/* Assign to m_lang to silence a GCC warning. See
|
||
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635. */
|
||
m_lang = language_unknown;
|
||
}
|
||
}
|
||
|
||
~scoped_switch_to_sym_language_if_auto ()
|
||
{
|
||
if (m_switched)
|
||
set_language (m_lang);
|
||
}
|
||
|
||
DISABLE_COPY_AND_ASSIGN (scoped_switch_to_sym_language_if_auto);
|
||
|
||
private:
|
||
bool m_switched;
|
||
enum language m_lang;
|
||
};
|
||
|
||
#endif /* defined (LANGUAGE_H) */
|