/* Rust language support routines for GDB, the GNU debugger.
- Copyright (C) 2016-2020 Free Software Foundation, Inc.
+ Copyright (C) 2016-2021 Free Software Foundation, Inc.
This file is part of GDB.
#include <string>
#include <vector>
#include "cli/cli-style.h"
+#include "parser-defs.h"
/* See rust-lang.h. */
\f
-/* language_defn::printstr implementation for Rust. */
+/* See language.h. */
-static void
-rust_printstr (struct ui_file *stream, struct type *type,
- const gdb_byte *string, unsigned int length,
- const char *user_encoding, int force_ellipses,
- const struct value_print_options *options)
+void
+rust_language::printstr (struct ui_file *stream, struct type *type,
+ const gdb_byte *string, unsigned int length,
+ const char *user_encoding, int force_ellipses,
+ const struct value_print_options *options) const
{
/* Rust always uses UTF-8, but let the caller override this if need
be. */
\f
-static void rust_value_print_inner (struct value *val, struct ui_file *stream,
- int recurse,
- const struct value_print_options *options);
-
/* Helper function to print a string slice. */
static void
options);
}
-/* rust_val_print helper for structs and untagged unions. */
+/* See rust-lang.h. */
-static void
-val_print_struct (struct value *val, struct ui_file *stream, int recurse,
- const struct value_print_options *options)
+void
+rust_language::val_print_struct
+ (struct value *val, struct ui_file *stream, int recurse,
+ const struct value_print_options *options) const
{
int i;
int first_field;
if (!is_tuple)
{
if (type->name () != NULL)
- fprintf_filtered (stream, "%s", type->name ());
+ fprintf_filtered (stream, "%s", type->name ());
if (type->num_fields () == 0)
- return;
+ return;
if (type->name () != NULL)
- fputs_filtered (" ", stream);
+ fputs_filtered (" ", stream);
}
if (is_tuple || is_tuple_struct)
for (i = 0; i < type->num_fields (); ++i)
{
if (field_is_static (&type->field (i)))
- continue;
+ continue;
if (!first_field)
- fputs_filtered (",", stream);
+ fputs_filtered (",", stream);
if (options->prettyformat)
- {
+ {
fputs_filtered ("\n", stream);
print_spaces_filtered (2 + 2 * recurse, stream);
- }
+ }
else if (!first_field)
- fputs_filtered (" ", stream);
+ fputs_filtered (" ", stream);
first_field = 0;
if (!is_tuple && !is_tuple_struct)
- {
+ {
fputs_styled (TYPE_FIELD_NAME (type, i),
variable_name_style.style (), stream);
fputs_filtered (": ", stream);
- }
+ }
- rust_value_print_inner (value_field (val, i), stream, recurse + 1,
- &opts);
+ value_print_inner (value_field (val, i), stream, recurse + 1, &opts);
}
if (options->prettyformat)
fputs_filtered ("}", stream);
}
-/* rust_val_print helper for discriminated unions (Rust enums). */
+/* See rust-lang.h. */
-static void
-rust_print_enum (struct value *val, struct ui_file *stream, int recurse,
- const struct value_print_options *options)
+void
+rust_language::print_enum (struct value *val, struct ui_file *stream,
+ int recurse,
+ const struct value_print_options *options) const
{
struct value_print_options opts = *options;
struct type *type = check_typedef (value_type (val));
styled_string (variable_name_style.style (),
TYPE_FIELD_NAME (variant_type, j)));
- rust_value_print_inner (value_field (val, j), stream, recurse + 1,
- &opts);
+ value_print_inner (value_field (val, j), stream, recurse + 1, &opts);
}
if (is_tuple)
"]"
};
-/* la_value_print_inner implementation for Rust. */
-static void
-rust_value_print_inner (struct value *val, struct ui_file *stream,
- int recurse,
- const struct value_print_options *options)
+/* See language.h. */
+
+void
+rust_language::value_print_inner
+ (struct value *val, struct ui_file *stream, int recurse,
+ const struct value_print_options *options) const
{
struct value_print_options opts = *options;
opts.deref_ref = 1;
that. */
struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
CORE_ADDR addr = value_as_address (val);
- struct gdbarch *arch = get_type_arch (type);
+ struct gdbarch *arch = type->arch ();
if (opts.addressprint)
{
byte string, hence the choice of "ASCII" as the
encoding. */
fputs_filtered ("b", stream);
- rust_printstr (stream, TYPE_TARGET_TYPE (type),
- value_contents_for_printing (val),
- high_bound - low_bound + 1, "ASCII", 0, &opts);
+ printstr (stream, TYPE_TARGET_TYPE (type),
+ value_contents_for_printing (val),
+ high_bound - low_bound + 1, "ASCII", 0, &opts);
}
break;
case TYPE_CODE_STRUCT:
if (rust_enum_p (type))
- rust_print_enum (val, stream, recurse, &opts);
+ print_enum (val, stream, recurse, &opts);
else
val_print_struct (val, stream, recurse, &opts);
break;
&& type->name () != NULL)
{
/* Rust calls the unit type "void" in its debuginfo,
- but we don't want to print it as that. */
+ but we don't want to print it as that. */
if (type->code () == TYPE_CODE_VOID)
- fputs_filtered ("()", stream);
+ fputs_filtered ("()", stream);
else
- fputs_filtered (type->name (), stream);
+ fputs_filtered (type->name (), stream);
return;
}
fputs_filtered (")", stream);
/* If it returns unit, we can omit the return type. */
if (TYPE_TARGET_TYPE (type)->code () != TYPE_CODE_VOID)
- {
- fputs_filtered (" -> ", stream);
- rust_internal_print_type (TYPE_TARGET_TYPE (type), "", stream,
+ {
+ fputs_filtered (" -> ", stream);
+ rust_internal_print_type (TYPE_TARGET_TYPE (type), "", stream,
-1, 0, flags, false, podata);
- }
+ }
break;
case TYPE_CODE_ARRAY:
&& name[len] == ':'
&& name[len + 1] == ':')
name += len + 2;
- fprintfi_filtered (level + 2, stream, "%ps,\n",
- styled_string (variable_name_style.style (),
- name));
+ fprintf_filtered (stream, "%*s%ps,\n",
+ level + 2, "",
+ styled_string (variable_name_style.style (),
+ name));
}
fputs_filtered ("}", stream);
return type;
}
-enum rust_primitive_types
-{
- rust_primitive_bool,
- rust_primitive_char,
- rust_primitive_i8,
- rust_primitive_u8,
- rust_primitive_i16,
- rust_primitive_u16,
- rust_primitive_i32,
- rust_primitive_u32,
- rust_primitive_i64,
- rust_primitive_u64,
- rust_primitive_isize,
- rust_primitive_usize,
- rust_primitive_f32,
- rust_primitive_f64,
- rust_primitive_unit,
- rust_primitive_str,
- nr_rust_primitive_types
-};
-
\f
/* A helper for rust_evaluate_subexp that handles OP_FUNCALL. */
case STRUCTOP_ANONYMOUS:
{
- /* Anonymous field access, i.e. foo.1. */
- struct value *lhs;
- int pc, field_number, nfields;
- struct type *type;
-
- pc = (*pos)++;
- field_number = longest_to_int (exp->elts[pc + 1].longconst);
- (*pos) += 2;
+ /* Anonymous field access, i.e. foo.1. */
+ struct value *lhs;
+ int pc, field_number, nfields;
+ struct type *type;
+
+ pc = (*pos)++;
+ field_number = longest_to_int (exp->elts[pc + 1].longconst);
+ (*pos) += 2;
lhs = evaluate_subexp (nullptr, exp, pos, noside);
type = value_type (lhs);
case STRUCTOP_STRUCT:
{
- struct value *lhs;
- struct type *type;
- int tem, pc;
+ struct value *lhs;
+ struct type *type;
+ int tem, pc;
- pc = (*pos)++;
- tem = longest_to_int (exp->elts[pc + 1].longconst);
- (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
+ pc = (*pos)++;
+ tem = longest_to_int (exp->elts[pc + 1].longconst);
+ (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
lhs = evaluate_subexp (nullptr, exp, pos, noside);
const char *field_name = &exp->elts[pc + 2].string;
- type = value_type (lhs);
- if (type->code () == TYPE_CODE_STRUCT && rust_enum_p (type))
+ type = value_type (lhs);
+ if (type->code () == TYPE_CODE_STRUCT && rust_enum_p (type))
{
gdb::array_view<const gdb_byte> view (value_contents (lhs),
TYPE_LENGTH (type));
*argsp = args;
}
-/* op_name implementation for Rust. */
-
-static const char *
-rust_op_name (enum exp_opcode opcode)
-{
- switch (opcode)
- {
- case OP_AGGREGATE:
- return "OP_AGGREGATE";
- case OP_OTHERS:
- return "OP_OTHERS";
- default:
- return op_name_standard (opcode);
- }
-}
-
/* dump_subexp_body implementation for Rust. */
static int
case OP_AGGREGATE:
{
struct type *type = exp->elts[pos + 1].type;
- struct objfile *objfile = TYPE_OBJFILE (type);
+ struct objfile *objfile = type->objfile_owner ();
if (objfile != NULL && (*objfile_func) (objfile, data))
return 1;
\f
-static const struct exp_descriptor exp_descriptor_rust =
+const struct exp_descriptor rust_language::exp_descriptor_tab =
{
rust_print_subexp,
rust_operator_length,
rust_operator_check,
- rust_op_name,
rust_dump_subexp_body,
rust_evaluate_subexp
};
-/* Class representing the Rust language. */
+/* See language.h. */
-class rust_language : public language_defn
+void
+rust_language::language_arch_info (struct gdbarch *gdbarch,
+ struct language_arch_info *lai) const
{
-public:
- rust_language ()
- : language_defn (language_rust)
- { /* Nothing. */ }
-
- /* See language.h. */
-
- const char *name () const override
- { return "rust"; }
-
- /* See language.h. */
-
- const char *natural_name () const override
- { return "Rust"; }
+ const struct builtin_type *builtin = builtin_type (gdbarch);
- /* See language.h. */
-
- const std::vector<const char *> &filename_extensions () const override
- {
- static const std::vector<const char *> extensions = { ".rs" };
- return extensions;
- }
-
- /* See language.h. */
- void language_arch_info (struct gdbarch *gdbarch,
- struct language_arch_info *lai) const override
- {
- const struct builtin_type *builtin = builtin_type (gdbarch);
-
- struct type **types
- = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_rust_primitive_types + 1,
- struct type *);
-
- types[rust_primitive_bool] = arch_boolean_type (gdbarch, 8, 1, "bool");
- types[rust_primitive_char] = arch_character_type (gdbarch, 32, 1, "char");
- types[rust_primitive_i8] = arch_integer_type (gdbarch, 8, 0, "i8");
- types[rust_primitive_u8] = arch_integer_type (gdbarch, 8, 1, "u8");
- types[rust_primitive_i16] = arch_integer_type (gdbarch, 16, 0, "i16");
- types[rust_primitive_u16] = arch_integer_type (gdbarch, 16, 1, "u16");
- types[rust_primitive_i32] = arch_integer_type (gdbarch, 32, 0, "i32");
- types[rust_primitive_u32] = arch_integer_type (gdbarch, 32, 1, "u32");
- types[rust_primitive_i64] = arch_integer_type (gdbarch, 64, 0, "i64");
- types[rust_primitive_u64] = arch_integer_type (gdbarch, 64, 1, "u64");
-
- unsigned int length = 8 * TYPE_LENGTH (builtin->builtin_data_ptr);
- types[rust_primitive_isize] = arch_integer_type (gdbarch, length, 0, "isize");
- types[rust_primitive_usize] = arch_integer_type (gdbarch, length, 1, "usize");
-
- types[rust_primitive_f32] = arch_float_type (gdbarch, 32, "f32",
- floatformats_ieee_single);
- types[rust_primitive_f64] = arch_float_type (gdbarch, 64, "f64",
- floatformats_ieee_double);
-
- types[rust_primitive_unit] = arch_integer_type (gdbarch, 0, 1, "()");
-
- struct type *tem = make_cv_type (1, 0, types[rust_primitive_u8], NULL);
- types[rust_primitive_str] = rust_slice_type ("&str", tem,
- types[rust_primitive_usize]);
-
- lai->primitive_type_vector = types;
- lai->bool_type_default = types[rust_primitive_bool];
- lai->string_char_type = types[rust_primitive_u8];
- }
-
- /* See language.h. */
- bool sniff_from_mangled_name (const char *mangled,
- char **demangled) const override
- {
- *demangled = gdb_demangle (mangled, DMGL_PARAMS | DMGL_ANSI);
- return *demangled != NULL;
- }
-
- /* See language.h. */
-
- char *demangle_symbol (const char *mangled, int options) const override
- {
- return gdb_demangle (mangled, options);
- }
-
- /* 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
+ /* Helper function to allow shorter lines below. */
+ auto add = [&] (struct type * t) -> struct type *
{
- print_offset_data podata;
- rust_internal_print_type (type, varstring, stream, show, level,
- flags, false, &podata);
- }
-
- /* See language.h. */
-
- gdb::unique_xmalloc_ptr<char> watch_location_expression
- (struct type *type, CORE_ADDR addr) const override
- {
- type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type)));
- std::string name = type_to_string (type);
- return gdb::unique_xmalloc_ptr<char>
- (xstrprintf ("*(%s as *mut %s)", core_addr_to_string (addr),
- name.c_str ()));
- }
-
- /* See language.h. */
-
- void value_print_inner
- (struct value *val, struct ui_file *stream, int recurse,
- const struct value_print_options *options) const override
- {
- return rust_value_print_inner (val, stream, recurse, options);
- }
-
- /* See language.h. */
-
- struct block_symbol lookup_symbol_nonlocal
- (const char *name, const struct block *block,
- const domain_enum domain) const override
- {
- struct block_symbol result = {};
-
- if (symbol_lookup_debug)
- {
- fprintf_unfiltered (gdb_stdlog,
- "rust_lookup_symbol_non_local"
- " (%s, %s (scope %s), %s)\n",
- name, host_address_to_string (block),
- block_scope (block), domain_name (domain));
- }
-
- /* Look up bare names in the block's scope. */
- std::string scopedname;
- if (name[cp_find_first_component (name)] == '\0')
- {
- const char *scope = block_scope (block);
-
- if (scope[0] != '\0')
- {
- scopedname = std::string (scope) + "::" + name;
- name = scopedname.c_str ();
- }
- else
- name = NULL;
- }
-
- if (name != NULL)
- {
- result = lookup_symbol_in_static_block (name, block, domain);
- if (result.symbol == NULL)
- result = lookup_global_symbol (name, block, domain);
- }
- return result;
- }
-
- /* See language.h. */
-
- int parser (struct parser_state *ps) const override
- {
- return rust_parse (ps);
- }
-
- /* See language.h. */
-
- void emitchar (int ch, struct type *chtype,
- struct ui_file *stream, int quoter) const override
- {
- if (!rust_chartype_p (chtype))
- generic_emit_char (ch, chtype, stream, quoter,
- target_charset (get_type_arch (chtype)));
- else if (ch == '\\' || ch == quoter)
- fprintf_filtered (stream, "\\%c", ch);
- else if (ch == '\n')
- fputs_filtered ("\\n", stream);
- else if (ch == '\r')
- fputs_filtered ("\\r", stream);
- else if (ch == '\t')
- fputs_filtered ("\\t", stream);
- else if (ch == '\0')
- fputs_filtered ("\\0", stream);
- else if (ch >= 32 && ch <= 127 && isprint (ch))
- fputc_filtered (ch, stream);
- else if (ch <= 255)
- fprintf_filtered (stream, "\\x%02x", ch);
- else
- fprintf_filtered (stream, "\\u{%06x}", ch);
- }
-
- /* See language.h. */
-
- void printchar (int ch, struct type *chtype,
- struct ui_file *stream) const override
- {
- fputs_filtered ("'", stream);
- LA_EMIT_CHAR (ch, chtype, stream, '\'');
- fputs_filtered ("'", stream);
- }
-
- /* 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
- {
- rust_printstr (stream, elttype, string, length, encoding,
- force_ellipses, options);
- }
-
- /* See language.h. */
-
- void print_typedef (struct type *type, struct symbol *new_symbol,
- struct ui_file *stream) const override
- {
- type = check_typedef (type);
- fprintf_filtered (stream, "type %s = ", new_symbol->print_name ());
- type_print (type, "", stream, 0);
- fprintf_filtered (stream, ";");
- }
-
- /* See language.h. */
-
- bool is_string_type_p (struct type *type) const override
- {
- LONGEST low_bound, high_bound;
+ lai->add_primitive_type (t);
+ return t;
+ };
+
+ struct type *bool_type
+ = add (arch_boolean_type (gdbarch, 8, 1, "bool"));
+ add (arch_character_type (gdbarch, 32, 1, "char"));
+ add (arch_integer_type (gdbarch, 8, 0, "i8"));
+ struct type *u8_type
+ = add (arch_integer_type (gdbarch, 8, 1, "u8"));
+ add (arch_integer_type (gdbarch, 16, 0, "i16"));
+ add (arch_integer_type (gdbarch, 16, 1, "u16"));
+ add (arch_integer_type (gdbarch, 32, 0, "i32"));
+ add (arch_integer_type (gdbarch, 32, 1, "u32"));
+ add (arch_integer_type (gdbarch, 64, 0, "i64"));
+ add (arch_integer_type (gdbarch, 64, 1, "u64"));
+
+ unsigned int length = 8 * TYPE_LENGTH (builtin->builtin_data_ptr);
+ add (arch_integer_type (gdbarch, length, 0, "isize"));
+ struct type *usize_type
+ = add (arch_integer_type (gdbarch, length, 1, "usize"));
+
+ add (arch_float_type (gdbarch, 32, "f32", floatformats_ieee_single));
+ add (arch_float_type (gdbarch, 64, "f64", floatformats_ieee_double));
+ add (arch_integer_type (gdbarch, 0, 1, "()"));
+
+ struct type *tem = make_cv_type (1, 0, u8_type, NULL);
+ add (rust_slice_type ("&str", tem, usize_type));
+
+ lai->set_bool_type (bool_type);
+ lai->set_string_char_type (u8_type);
+}
- type = check_typedef (type);
- return ((type->code () == TYPE_CODE_STRING)
- || (type->code () == TYPE_CODE_PTR
- && (TYPE_TARGET_TYPE (type)->code () == TYPE_CODE_ARRAY
- && rust_u8_type_p (TYPE_TARGET_TYPE (TYPE_TARGET_TYPE (type)))
- && get_array_bounds (TYPE_TARGET_TYPE (type), &low_bound,
- &high_bound)))
- || (type->code () == TYPE_CODE_STRUCT
- && !rust_enum_p (type)
- && rust_slice_type_p (type)
- && strcmp (type->name (), "&str") == 0));
- }
+/* See language.h. */
- /* See language.h. */
+void
+rust_language::print_type (struct type *type, const char *varstring,
+ struct ui_file *stream, int show, int level,
+ const struct type_print_options *flags) const
+{
+ print_offset_data podata;
+ rust_internal_print_type (type, varstring, stream, show, level,
+ flags, false, &podata);
+}
- bool range_checking_on_by_default () const override
- { return true; }
+/* See language.h. */
- /* See language.h. */
+void
+rust_language::emitchar (int ch, struct type *chtype,
+ struct ui_file *stream, int quoter) const
+{
+ if (!rust_chartype_p (chtype))
+ generic_emit_char (ch, chtype, stream, quoter,
+ target_charset (chtype->arch ()));
+ else if (ch == '\\' || ch == quoter)
+ fprintf_filtered (stream, "\\%c", ch);
+ else if (ch == '\n')
+ fputs_filtered ("\\n", stream);
+ else if (ch == '\r')
+ fputs_filtered ("\\r", stream);
+ else if (ch == '\t')
+ fputs_filtered ("\\t", stream);
+ else if (ch == '\0')
+ fputs_filtered ("\\0", stream);
+ else if (ch >= 32 && ch <= 127 && isprint (ch))
+ fputc_filtered (ch, stream);
+ else if (ch <= 255)
+ fprintf_filtered (stream, "\\x%02x", ch);
+ else
+ fprintf_filtered (stream, "\\u{%06x}", ch);
+}
- const struct exp_descriptor *expression_ops () const override
- { return &exp_descriptor_rust; }
+/* See language.h. */
- /* See language.h. */
+bool
+rust_language::is_string_type_p (struct type *type) const
+{
+ LONGEST low_bound, high_bound;
- const struct op_print *opcode_print_table () const override
- { return c_op_print_tab; }
-};
+ type = check_typedef (type);
+ return ((type->code () == TYPE_CODE_STRING)
+ || (type->code () == TYPE_CODE_PTR
+ && (TYPE_TARGET_TYPE (type)->code () == TYPE_CODE_ARRAY
+ && rust_u8_type_p (TYPE_TARGET_TYPE (TYPE_TARGET_TYPE (type)))
+ && get_array_bounds (TYPE_TARGET_TYPE (type), &low_bound,
+ &high_bound)))
+ || (type->code () == TYPE_CODE_STRUCT
+ && !rust_enum_p (type)
+ && rust_slice_type_p (type)
+ && strcmp (type->name (), "&str") == 0));
+}
/* Single instance of the Rust language class. */
projects / binutils.git / blobdiff