/* Modula 2 language support routines for GDB, the GNU debugger.
- Copyright (C) 1992-2017 Free Software Foundation, Inc.
+ Copyright (C) 1992-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "m2-lang.h"
#include "c-lang.h"
#include "valprint.h"
+#include "gdbarch.h"
static void m2_printchar (int, struct type *, struct ui_file *);
static void m2_emit_char (int, struct type *, struct ui_file *, int);
fputs_filtered ("...", stream);
}
+/* Return true if TYPE is a string. */
+
+static bool
+m2_is_string_type_p (struct type *type)
+{
+ 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;
+}
+
static struct value *
evaluate_subexp_modula2 (struct type *expect_type, struct expression *exp,
int *pos, enum noside noside)
{
struct value *temp = arg1;
type = TYPE_FIELD_TYPE (type, 0);
- if (type == NULL || (TYPE_CODE (type) != TYPE_CODE_PTR))
+ if (type == NULL || (type->code () != TYPE_CODE_PTR))
{
warning (_("internal error: unbounded "
"array structure is unknown"));
return value_ind (value_ptradd (arg1, value_as_long (arg2)));
}
else
- if (TYPE_CODE (type) != TYPE_CODE_ARRAY)
+ if (type->code () != TYPE_CODE_ARRAY)
{
- if (TYPE_NAME (type))
+ if (type->name ())
error (_("cannot subscript something of type `%s'"),
- TYPE_NAME (type));
+ type->name ());
else
error (_("cannot subscript requested type"));
}
nr_m2_primitive_types
};
-static void
-m2_language_arch_info (struct gdbarch *gdbarch,
- struct language_arch_info *lai)
-{
- const struct builtin_m2_type *builtin = builtin_m2_type (gdbarch);
-
- lai->string_char_type = builtin->builtin_char;
- lai->primitive_type_vector
- = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_m2_primitive_types + 1,
- struct type *);
-
- lai->primitive_type_vector [m2_primitive_type_char]
- = builtin->builtin_char;
- lai->primitive_type_vector [m2_primitive_type_int]
- = builtin->builtin_int;
- lai->primitive_type_vector [m2_primitive_type_card]
- = builtin->builtin_card;
- lai->primitive_type_vector [m2_primitive_type_real]
- = builtin->builtin_real;
- lai->primitive_type_vector [m2_primitive_type_bool]
- = builtin->builtin_bool;
-
- lai->bool_type_symbol = "BOOLEAN";
- lai->bool_type_default = builtin->builtin_bool;
-}
-
const struct exp_descriptor exp_descriptor_modula2 =
{
print_subexp_standard,
evaluate_subexp_modula2
};
-extern const struct language_defn m2_language_defn =
+/* Constant data describing the M2 language. */
+
+extern const struct language_data m2_language_data =
{
"modula-2",
"Modula-2",
NULL,
&exp_descriptor_modula2,
m2_parse, /* parser */
- m2_yyerror, /* parser error function */
null_post_parser,
m2_printchar, /* Print character constant */
m2_printstr, /* function to print string constant */
m2_emit_char, /* Function to print a single character */
m2_print_type, /* Print a type using appropriate syntax */
m2_print_typedef, /* Print a typedef using appropriate syntax */
- m2_val_print, /* Print a value using appropriate syntax */
+ m2_value_print_inner, /* la_value_print_inner */
c_value_print, /* Print a top-level value */
- default_read_var_value, /* la_read_var_value */
NULL, /* Language specific skip_trampoline */
NULL, /* name_of_this */
+ false, /* la_store_sym_names_in_linkage_form_p */
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
basic_lookup_transparent_type,/* lookup_transparent_type */
NULL, /* Language specific symbol demangler */
0, /* String lower bound */
default_word_break_characters,
default_collect_symbol_completion_matches,
- m2_language_arch_info,
- default_print_array_index,
- default_pass_by_reference,
- default_get_string,
c_watch_location_expression,
NULL, /* la_get_symbol_name_matcher */
iterate_over_symbols,
&default_varobj_ops,
NULL,
NULL,
- LANG_MAGIC
+ m2_is_string_type_p,
+ "{...}" /* la_struct_too_deep_ellipsis */
};
+/* Class representing the M2 language. */
+
+class m2_language : public language_defn
+{
+public:
+ m2_language ()
+ : language_defn (language_m2, m2_language_data)
+ { /* Nothing. */ }
+
+ /* See language.h. */
+ void language_arch_info (struct gdbarch *gdbarch,
+ struct language_arch_info *lai) const override
+ {
+ const struct builtin_m2_type *builtin = builtin_m2_type (gdbarch);
+
+ lai->string_char_type = builtin->builtin_char;
+ lai->primitive_type_vector
+ = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_m2_primitive_types + 1,
+ struct type *);
+
+ lai->primitive_type_vector [m2_primitive_type_char]
+ = builtin->builtin_char;
+ lai->primitive_type_vector [m2_primitive_type_int]
+ = builtin->builtin_int;
+ lai->primitive_type_vector [m2_primitive_type_card]
+ = builtin->builtin_card;
+ lai->primitive_type_vector [m2_primitive_type_real]
+ = builtin->builtin_real;
+ lai->primitive_type_vector [m2_primitive_type_bool]
+ = builtin->builtin_bool;
+
+ lai->bool_type_symbol = "BOOLEAN";
+ lai->bool_type_default = builtin->builtin_bool;
+ }
+};
+
+/* Single instance of the M2 language. */
+
+static m2_language m2_language_defn;
+
static void *
build_m2_types (struct gdbarch *gdbarch)
{
/* Initialization for Modula-2 */
+void _initialize_m2_language ();
void
-_initialize_m2_language (void)
+_initialize_m2_language ()
{
m2_type_data = gdbarch_data_register_post_init (build_m2_types);
}
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