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9c23c0df0d
This introduces the new method language_defn::lookup_symbol_local, and then changes lookup_symbol_local to use it. This removes an explicit language check from this function, and makes it easier for other languages to hook into this code.
390 lines
12 KiB
C++
390 lines
12 KiB
C++
/* Fortran language support definitions for GDB, the GNU debugger.
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Copyright (C) 1992-2024 Free Software Foundation, Inc.
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Contributed by Motorola. Adapted from the C definitions by Farooq Butt
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(fmbutt@engage.sps.mot.com).
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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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#ifndef F_LANG_H
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#define F_LANG_H
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#include "language.h"
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#include "valprint.h"
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struct type_print_options;
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struct parser_state;
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/* Class representing the Fortran language. */
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class f_language : public language_defn
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{
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public:
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f_language ()
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: language_defn (language_fortran)
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{ /* Nothing. */ }
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/* See language.h. */
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const char *name () const override
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{ return "fortran"; }
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/* See language.h. */
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const char *natural_name () const override
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{ return "Fortran"; }
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/* See language.h. */
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const std::vector<const char *> &filename_extensions () const override
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{
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static const std::vector<const char *> extensions = {
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".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP",
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".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08"
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};
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return extensions;
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}
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/* See language.h. */
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void print_array_index (struct type *index_type,
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LONGEST index,
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struct ui_file *stream,
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const value_print_options *options) const override;
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/* See language.h. */
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void language_arch_info (struct gdbarch *gdbarch,
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struct language_arch_info *lai) const override;
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/* See language.h. */
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unsigned int search_name_hash (const char *name) const override;
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/* See language.h. */
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gdb::unique_xmalloc_ptr<char> demangle_symbol (const char *mangled,
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int options) const override
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{
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/* We could support demangling here to provide module namespaces
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also for inferiors with only minimal symbol table (ELF symbols).
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Just the mangling standard is not standardized across compilers
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and there is no DW_AT_producer available for inferiors with only
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the ELF symbols to check the mangling kind. */
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return nullptr;
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}
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/* See language.h. */
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void print_type (struct type *type, const char *varstring,
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struct ui_file *stream, int show, int level,
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const struct type_print_options *flags) const override;
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/* See language.h. This just returns default set of word break
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characters but with the modules separator `::' removed. */
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const char *word_break_characters (void) const override
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{
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static char *retval;
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if (!retval)
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{
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char *s;
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retval = xstrdup (language_defn::word_break_characters ());
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s = strchr (retval, ':');
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if (s)
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{
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char *last_char = &s[strlen (s) - 1];
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*s = *last_char;
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*last_char = 0;
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}
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}
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return retval;
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}
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/* See language.h. */
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void collect_symbol_completion_matches (completion_tracker &tracker,
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complete_symbol_mode mode,
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symbol_name_match_type name_match_type,
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const char *text, const char *word,
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enum type_code code) const override
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{
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/* Consider the modules separator :: as a valid symbol name character
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class. */
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default_collect_symbol_completion_matches_break_on (tracker, mode,
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name_match_type,
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text, word, ":",
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code);
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}
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/* See language.h. */
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void value_print_inner
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(struct value *val, struct ui_file *stream, int recurse,
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const struct value_print_options *options) const override;
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/* See language.h. */
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struct block_symbol lookup_symbol_local
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(const char *scope,
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const char *name,
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const struct block *block,
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const domain_search_flags domain) const override;
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/* See language.h. */
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struct block_symbol lookup_symbol_nonlocal
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(const char *name, const struct block *block,
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const domain_search_flags domain) const override;
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/* See language.h. */
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int parser (struct parser_state *ps) const override;
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/* See language.h. */
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void emitchar (int ch, struct type *chtype,
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struct ui_file *stream, int quoter) const override
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{
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const char *encoding = get_encoding (chtype);
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generic_emit_char (ch, chtype, stream, quoter, encoding);
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}
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/* See language.h. */
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void printchar (int ch, struct type *chtype,
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struct ui_file *stream) const override
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{
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gdb_puts ("'", stream);
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emitchar (ch, chtype, stream, '\'');
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gdb_puts ("'", stream);
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}
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/* See language.h. */
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void 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 *options) const override
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{
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const char *type_encoding = get_encoding (elttype);
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if (elttype->length () == 4)
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gdb_puts ("4_", stream);
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if (!encoding || !*encoding)
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encoding = type_encoding;
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generic_printstr (stream, elttype, string, length, encoding,
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force_ellipses, '\'', 0, options);
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}
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/* See language.h. */
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void print_typedef (struct type *type, struct symbol *new_symbol,
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struct ui_file *stream) const override;
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/* See language.h. */
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bool is_string_type_p (struct type *type) const override
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{
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type = check_typedef (type);
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return (type->code () == TYPE_CODE_STRING
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|| (type->code () == TYPE_CODE_ARRAY
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&& type->target_type ()->code () == TYPE_CODE_CHAR));
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}
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/* See language.h. */
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struct value *value_string (struct gdbarch *gdbarch,
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const char *ptr, ssize_t len) const override;
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/* See language.h. */
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const char *struct_too_deep_ellipsis () const override
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{ return "(...)"; }
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/* See language.h. */
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bool c_style_arrays_p () const override
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{ return false; }
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/* See language.h. */
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bool range_checking_on_by_default () const override
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{ return true; }
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/* See language.h. */
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enum case_sensitivity case_sensitivity () const override
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{ return case_sensitive_off; }
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/* See language.h. */
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enum array_ordering array_ordering () const override
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{ return array_column_major; }
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protected:
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/* See language.h. */
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symbol_name_matcher_ftype *get_symbol_name_matcher_inner
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(const lookup_name_info &lookup_name) const override;
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private:
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/* Return the encoding that should be used for the character type
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TYPE. */
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static const char *get_encoding (struct type *type);
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/* Print any asterisks or open-parentheses needed before the variable
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name (to describe its type).
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On outermost call, pass 0 for PASSED_A_PTR.
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On outermost call, SHOW > 0 means should ignore
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any typename for TYPE and show its details.
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SHOW is always zero on recursive calls. */
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void f_type_print_varspec_prefix (struct type *type,
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struct ui_file * stream,
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int show, int passed_a_ptr) const;
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/* Print any array sizes, function arguments or close parentheses needed
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after the variable name (to describe its type). Args work like
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c_type_print_varspec_prefix.
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PRINT_RANK_ONLY is true when TYPE is an array which should be printed
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without the upper and lower bounds being specified, this will occur
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when the array is not allocated or not associated and so there are no
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known upper or lower bounds. */
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void f_type_print_varspec_suffix (struct type *type,
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struct ui_file *stream,
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int show, int passed_a_ptr,
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int demangled_args,
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int arrayprint_recurse_level,
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bool print_rank_only) const;
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/* If TYPE is an extended type, then print out derivation information.
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A typical output could look like this:
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"Type, extends(point) :: waypoint"
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" Type point :: point"
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" real(kind=4) :: angle"
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"End Type waypoint". */
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void f_type_print_derivation_info (struct type *type,
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struct ui_file *stream) const;
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/* Print the name of the type (or the ultimate pointer target, function
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value or array element), or the description of a structure or union.
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SHOW nonzero means don't print this type as just its name;
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show its real definition even if it has a name.
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SHOW zero means print just typename or struct tag if there is one
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SHOW negative means abbreviate structure elements.
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SHOW is decremented for printing of structure elements.
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LEVEL is the depth to indent by. We increase it for some recursive
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calls. */
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void f_type_print_base (struct type *type, struct ui_file *stream, int show,
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int level) const;
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};
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/* Language-specific data structures */
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/* A common block. */
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struct common_block
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{
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/* The number of entries in the block. */
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size_t n_entries;
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/* The contents of the block, allocated using the struct hack. All
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pointers in the array are non-NULL. */
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struct symbol *contents[1];
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};
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extern LONGEST f77_get_upperbound (struct type *);
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extern LONGEST f77_get_lowerbound (struct type *);
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extern int calc_f77_array_dims (struct type *);
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/* Fortran (F77) types */
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struct builtin_f_type
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{
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struct type *builtin_character = nullptr;
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struct type *builtin_integer_s1 = nullptr;
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struct type *builtin_integer_s2 = nullptr;
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struct type *builtin_integer = nullptr;
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struct type *builtin_integer_s8 = nullptr;
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struct type *builtin_logical_s1 = nullptr;
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struct type *builtin_logical_s2 = nullptr;
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struct type *builtin_logical = nullptr;
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struct type *builtin_logical_s8 = nullptr;
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struct type *builtin_real = nullptr;
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struct type *builtin_real_s8 = nullptr;
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struct type *builtin_real_s16 = nullptr;
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struct type *builtin_complex = nullptr;
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struct type *builtin_complex_s8 = nullptr;
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struct type *builtin_complex_s16 = nullptr;
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struct type *builtin_void = nullptr;
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};
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/* Return the Fortran type table for the specified architecture. */
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extern const struct builtin_f_type *builtin_f_type (struct gdbarch *gdbarch);
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/* Ensures that function argument TYPE is appropriate to inform the debugger
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that ARG should be passed as a pointer. Returns the potentially updated
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argument type.
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If ARG is of type pointer then the type of ARG is returned, otherwise
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TYPE is returned untouched.
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This function exists to augment the types of Fortran function call
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parameters to be pointers to the reported value, when the corresponding ARG
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has also been wrapped in a pointer (by fortran_argument_convert). This
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informs the debugger that these arguments should be passed as a pointer
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rather than as the pointed to type. */
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extern struct type *fortran_preserve_arg_pointer (struct value *arg,
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struct type *type);
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/* Fortran arrays can have a negative stride. When this happens it is
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often the case that the base address for an object is not the lowest
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address occupied by that object. For example, an array slice (10:1:-1)
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will be encoded with lower bound 1, upper bound 10, a stride of
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-ELEMENT_SIZE, and have a base address pointer that points at the
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element with the highest address in memory.
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This really doesn't play well with our current model of value contents,
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but could easily require a significant update in order to be supported
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"correctly".
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For now, we manually force the base address to be the lowest addressed
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element here. Yes, this will break some things, but it fixes other
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things. The hope is that it fixes more than it breaks. */
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extern CORE_ADDR fortran_adjust_dynamic_array_base_address_hack
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(struct type *type, CORE_ADDR address);
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#endif /* F_LANG_H */
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