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/* Modula 2 language support definitions for GDB, the GNU debugger.
Copyright (C) 1992-2020 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef M2_LANG_H
#define M2_LANG_H
struct type_print_options;
struct parser_state;
/* Defined in m2-typeprint.c */
extern void m2_print_type (struct type *, const char *, struct ui_file *, int,
int, const struct type_print_options *);
extern int m2_is_long_set (struct type *type);
extern int m2_is_unbounded_array (struct type *type);
extern int get_long_set_bounds (struct type *type, LONGEST *low,
LONGEST *high);
/* Modula-2 types */
struct builtin_m2_type
{
struct type *builtin_char;
struct type *builtin_int;
struct type *builtin_card;
struct type *builtin_real;
struct type *builtin_bool;
};
/* Return the Modula-2 type table for the specified architecture. */
extern const struct builtin_m2_type *builtin_m2_type (struct gdbarch *gdbarch);
/* Class representing the M2 language. */
class m2_language : public language_defn
{
public:
m2_language ()
: language_defn (language_m2)
{ /* Nothing. */ }
/* See language.h. */
const char *name () const override
{ return "modula-2"; }
/* See language.h. */
const char *natural_name () const override
{ return "Modula-2"; }
/* See language.h. */
void language_arch_info (struct gdbarch *gdbarch,
struct language_arch_info *lai) const override;
/* See language.h. */
void print_type (struct type *type, const char *varstring,
struct ui_file *stream, int show, int level,
const struct type_print_options *flags) const override
{
m2_print_type (type, varstring, stream, show, level, flags);
}
/* See language.h. */
void value_print_inner (struct value *val, struct ui_file *stream,
int recurse,
const struct value_print_options *options) const override;
/* See language.h. */
int parser (struct parser_state *ps) const override;
/* See language.h. */
void emitchar (int ch, struct type *chtype,
struct ui_file *stream, int quoter) const override;
/* See language.h. */
void printchar (int ch, struct type *chtype,
struct ui_file *stream) const override;
/* See language.h. */
void printstr (struct ui_file *stream, struct type *elttype,
const gdb_byte *string, unsigned int length,
const char *encoding, int force_ellipses,
const struct value_print_options *options) const override;
/* See language.h. */
void print_typedef (struct type *type, struct symbol *new_symbol,
struct ui_file *stream) const override;
/* See language.h. */
bool is_string_type_p (struct type *type) const override
{
type = check_typedef (type);
if (type->code () == TYPE_CODE_ARRAY
&& TYPE_LENGTH (type) > 0
&& TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
{
struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
if (TYPE_LENGTH (elttype) == 1
&& (elttype->code () == TYPE_CODE_INT
|| elttype->code () == TYPE_CODE_CHAR))
return true;
}
return false;
}
/* See language.h. */
bool c_style_arrays_p () const override
{ return false; }
/* See language.h. Despite not having C-style arrays, Modula-2 uses 0
for its string lower bounds. */
char string_lower_bound () const override
{ return 0; }
/* See language.h. */
bool range_checking_on_by_default () const override
{ return true; }
/* See language.h. */
const struct exp_descriptor *expression_ops () const override
{ return &exp_descriptor_modula2; }
/* See language.h. */
const struct op_print *opcode_print_table () const override
{ return op_print_tab; }
private:
/* Table of expression handling functions for use by EXPRESSION_OPS
member function. */
static const struct exp_descriptor exp_descriptor_modula2;
/* Table of opcode data for use by OPCODE_PRINT_TABLE member function. */
static const struct op_print op_print_tab[];
};
#endif /* M2_LANG_H */
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