/* Rust language support routines for GDB, the GNU debugger.
- Copyright (C) 2016-2019 Free Software Foundation, Inc.
+ Copyright (C) 2016-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include <algorithm>
#include <string>
#include <vector>
+#include "cli/cli-style.h"
/* See rust-lang.h. */
enum. */
static bool
-rust_enum_p (const struct type *type)
+rust_enum_p (struct type *type)
{
- return (TYPE_CODE (type) == TYPE_CODE_STRUCT
- && TYPE_NFIELDS (type) == 1
- && TYPE_FLAG_DISCRIMINATED_UNION (TYPE_FIELD_TYPE (type, 0)));
+ /* is_dynamic_type will return true if any field has a dynamic
+ attribute -- but we only want to check the top level. */
+ return TYPE_HAS_VARIANT_PARTS (type);
}
-/* Return true if TYPE, which must be an enum type, has no
- variants. */
+/* Return true if TYPE, which must be an already-resolved enum type,
+ has no variants. */
static bool
rust_empty_enum_p (const struct type *type)
{
- gdb_assert (rust_enum_p (type));
- /* In Rust the enum always fills the containing structure. */
- gdb_assert (TYPE_FIELD_BITPOS (type, 0) == 0);
-
- return TYPE_NFIELDS (TYPE_FIELD_TYPE (type, 0)) == 0;
+ return type->num_fields () == 0;
}
-/* Given an enum type and contents, find which variant is active. */
+/* Given an already-resolved enum type and contents, find which
+ variant is active. */
-static struct field *
-rust_enum_variant (struct type *type, const gdb_byte *contents)
+static int
+rust_enum_variant (struct type *type)
{
- /* In Rust the enum always fills the containing structure. */
- gdb_assert (TYPE_FIELD_BITPOS (type, 0) == 0);
-
- struct type *union_type = TYPE_FIELD_TYPE (type, 0);
-
- int fieldno = value_union_variant (union_type, contents);
- return &TYPE_FIELD (union_type, fieldno);
+ /* The active variant is simply the first non-artificial field. */
+ for (int i = 0; i < type->num_fields (); ++i)
+ if (!TYPE_FIELD_ARTIFICIAL (type, i))
+ return i;
+
+ /* Perhaps we could get here by trying to print an Ada variant
+ record in Rust mode. Unlikely, but an error is safer than an
+ assert. */
+ error (_("Could not find active enum variant"));
}
/* See rust-lang.h. */
/* The current implementation is a bit of a hack, but there's
nothing else in the debuginfo to distinguish a tuple from a
struct. */
- return (TYPE_CODE (type) == TYPE_CODE_STRUCT
- && TYPE_NAME (type) != NULL
- && TYPE_NAME (type)[0] == '(');
+ return (type->code () == TYPE_CODE_STRUCT
+ && type->name () != NULL
+ && type->name ()[0] == '(');
}
/* Return true if all non-static fields of a structlike type are in a
field_number = 0;
- if (TYPE_CODE (type) != TYPE_CODE_STRUCT)
+ if (type->code () != TYPE_CODE_STRUCT)
return false;
- for (i = 0; i < TYPE_NFIELDS (type); ++i)
+ for (i = 0; i < type->num_fields (); ++i)
{
- if (!field_is_static (&TYPE_FIELD (type, i)))
+ if (!field_is_static (&type->field (i)))
{
char buf[20];
/* This is just an approximation until DWARF can represent Rust more
precisely. We exclude zero-length structs because they may not
be tuple structs, and there's no way to tell. */
- return TYPE_NFIELDS (type) > 0 && rust_underscore_fields (type);
+ return type->num_fields () > 0 && rust_underscore_fields (type);
}
/* Return true if TYPE is a slice type, otherwise false. */
static bool
rust_slice_type_p (struct type *type)
{
- return (TYPE_CODE (type) == TYPE_CODE_STRUCT
- && TYPE_NAME (type) != NULL
- && (strncmp (TYPE_NAME (type), "&[", 2) == 0
- || strcmp (TYPE_NAME (type), "&str") == 0));
+ return (type->code () == TYPE_CODE_STRUCT
+ && type->name () != NULL
+ && (strncmp (type->name (), "&[", 2) == 0
+ || strcmp (type->name (), "&str") == 0));
}
/* Return true if TYPE is a range type, otherwise false. */
{
int i;
- if (TYPE_CODE (type) != TYPE_CODE_STRUCT
- || TYPE_NFIELDS (type) > 2
- || TYPE_NAME (type) == NULL
- || strstr (TYPE_NAME (type), "::Range") == NULL)
+ if (type->code () != TYPE_CODE_STRUCT
+ || type->num_fields () > 2
+ || type->name () == NULL
+ || strstr (type->name (), "::Range") == NULL)
return false;
- if (TYPE_NFIELDS (type) == 0)
+ if (type->num_fields () == 0)
return true;
i = 0;
if (strcmp (TYPE_FIELD_NAME (type, 0), "start") == 0)
{
- if (TYPE_NFIELDS (type) == 1)
+ if (type->num_fields () == 1)
return true;
i = 1;
}
- else if (TYPE_NFIELDS (type) == 2)
+ else if (type->num_fields () == 2)
{
/* First field had to be "start". */
return false;
static bool
rust_inclusive_range_type_p (struct type *type)
{
- return (strstr (TYPE_NAME (type), "::RangeInclusive") != NULL
- || strstr (TYPE_NAME (type), "::RangeToInclusive") != NULL);
+ return (strstr (type->name (), "::RangeInclusive") != NULL
+ || strstr (type->name (), "::RangeToInclusive") != NULL);
}
/* Return true if TYPE seems to be the type "u8", otherwise false. */
static bool
rust_u8_type_p (struct type *type)
{
- return (TYPE_CODE (type) == TYPE_CODE_INT
+ return (type->code () == TYPE_CODE_INT
&& TYPE_UNSIGNED (type)
&& TYPE_LENGTH (type) == 1);
}
static bool
rust_chartype_p (struct type *type)
{
- return (TYPE_CODE (type) == TYPE_CODE_CHAR
+ return (type->code () == TYPE_CODE_CHAR
&& TYPE_LENGTH (type) == 4
&& TYPE_UNSIGNED (type));
}
{
struct type *type = check_typedef (value_type (value));
- if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2)
+ if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2)
return NULL;
/* Try to be a bit resilient if the ABI changes. */
\f
-/* la_emitchar implementation for Rust. */
-
-static void
-rust_emitchar (int c, struct type *type, struct ui_file *stream, int quoter)
-{
- if (!rust_chartype_p (type))
- generic_emit_char (c, type, stream, quoter,
- target_charset (get_type_arch (type)));
- else if (c == '\\' || c == quoter)
- fprintf_filtered (stream, "\\%c", c);
- else if (c == '\n')
- fputs_filtered ("\\n", stream);
- else if (c == '\r')
- fputs_filtered ("\\r", stream);
- else if (c == '\t')
- fputs_filtered ("\\t", stream);
- else if (c == '\0')
- fputs_filtered ("\\0", stream);
- else if (c >= 32 && c <= 127 && isprint (c))
- fputc_filtered (c, stream);
- else if (c <= 255)
- fprintf_filtered (stream, "\\x%02x", c);
- else
- fprintf_filtered (stream, "\\u{%06x}", c);
-}
-
-/* la_printchar implementation for Rust. */
-
-static void
-rust_printchar (int c, struct type *type, struct ui_file *stream)
-{
- fputs_filtered ("'", stream);
- LA_EMIT_CHAR (c, type, stream, '\'');
- fputs_filtered ("'", stream);
-}
-
-/* la_printstr implementation for Rust. */
+/* language_defn::printstr implementation for Rust. */
static void
rust_printstr (struct ui_file *stream, struct type *type,
\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
/* rust_val_print helper for structs and untagged unions. */
static void
-val_print_struct (struct type *type, int embedded_offset,
- CORE_ADDR address, struct ui_file *stream,
- int recurse, struct value *val,
+val_print_struct (struct value *val, struct ui_file *stream, int recurse,
const struct value_print_options *options)
{
int i;
int first_field;
+ struct type *type = check_typedef (value_type (val));
- if (rust_slice_type_p (type) && strcmp (TYPE_NAME (type), "&str") == 0)
+ if (rust_slice_type_p (type) && strcmp (type->name (), "&str") == 0)
{
+ /* If what we are printing here is actually a string within a
+ structure then VAL will be the original parent value, while TYPE
+ will be the type of the structure representing the string we want
+ to print.
+ However, RUST_VAL_PRINT_STR looks up the fields of the string
+ inside VAL, assuming that VAL is the string.
+ So, recreate VAL as a value representing just the string. */
+ val = value_at_lazy (type, value_address (val));
rust_val_print_str (stream, val, options);
return;
}
if (!is_tuple)
{
- if (TYPE_NAME (type) != NULL)
- fprintf_filtered (stream, "%s", TYPE_NAME (type));
+ if (type->name () != NULL)
+ fprintf_filtered (stream, "%s", type->name ());
- if (TYPE_NFIELDS (type) == 0)
+ if (type->num_fields () == 0)
return;
- if (TYPE_NAME (type) != NULL)
+ if (type->name () != NULL)
fputs_filtered (" ", stream);
}
opts.deref_ref = 0;
first_field = 1;
- for (i = 0; i < TYPE_NFIELDS (type); ++i)
+ for (i = 0; i < type->num_fields (); ++i)
{
- if (field_is_static (&TYPE_FIELD (type, i)))
+ if (field_is_static (&type->field (i)))
continue;
if (!first_field)
if (!is_tuple && !is_tuple_struct)
{
- fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
+ fputs_styled (TYPE_FIELD_NAME (type, i),
+ variable_name_style.style (), stream);
fputs_filtered (": ", stream);
}
- val_print (TYPE_FIELD_TYPE (type, i),
- embedded_offset + TYPE_FIELD_BITPOS (type, i) / 8,
- address,
- stream, recurse + 1, val, &opts,
- current_language);
+ rust_value_print_inner (value_field (val, i), stream, recurse + 1,
+ &opts);
}
if (options->prettyformat)
/* rust_val_print helper for discriminated unions (Rust enums). */
static void
-rust_print_enum (struct type *type, int embedded_offset,
- CORE_ADDR address, struct ui_file *stream,
- int recurse, struct value *val,
+rust_print_enum (struct value *val, struct ui_file *stream, int recurse,
const struct value_print_options *options)
{
struct value_print_options opts = *options;
+ struct type *type = check_typedef (value_type (val));
opts.deref_ref = 0;
+ gdb_assert (rust_enum_p (type));
+ gdb::array_view<const gdb_byte> view (value_contents_for_printing (val),
+ TYPE_LENGTH (value_type (val)));
+ type = resolve_dynamic_type (type, view, value_address (val));
+
if (rust_empty_enum_p (type))
{
/* Print the enum type name here to be more clear. */
- fprintf_filtered (stream, _("%s {<No data fields>}"), TYPE_NAME (type));
+ fprintf_filtered (stream, _("%s {%p[<No data fields>%p]}"),
+ type->name (),
+ metadata_style.style ().ptr (), nullptr);
return;
}
- const gdb_byte *valaddr = value_contents_for_printing (val);
- struct field *variant_field = rust_enum_variant (type, valaddr);
- embedded_offset += FIELD_BITPOS (*variant_field) / 8;
- struct type *variant_type = FIELD_TYPE (*variant_field);
+ int variant_fieldno = rust_enum_variant (type);
+ val = value_field (val, variant_fieldno);
+ struct type *variant_type = type->field (variant_fieldno).type ();
- int nfields = TYPE_NFIELDS (variant_type);
+ int nfields = variant_type->num_fields ();
bool is_tuple = rust_tuple_struct_type_p (variant_type);
- fprintf_filtered (stream, "%s", TYPE_NAME (variant_type));
+ fprintf_filtered (stream, "%s", variant_type->name ());
if (nfields == 0)
{
/* In case of a nullary variant like 'None', just output
}
bool first_field = true;
- for (int j = 0; j < TYPE_NFIELDS (variant_type); j++)
+ for (int j = 0; j < variant_type->num_fields (); j++)
{
if (!first_field)
fputs_filtered (", ", stream);
first_field = false;
if (!is_tuple)
- fprintf_filtered (stream, "%s: ",
- TYPE_FIELD_NAME (variant_type, j));
-
- val_print (TYPE_FIELD_TYPE (variant_type, j),
- (embedded_offset
- + TYPE_FIELD_BITPOS (variant_type, j) / 8),
- address,
- stream, recurse + 1, val, &opts,
- current_language);
+ fprintf_filtered (stream, "%ps: ",
+ styled_string (variable_name_style.style (),
+ TYPE_FIELD_NAME (variant_type, j)));
+
+ rust_value_print_inner (value_field (val, j), stream, recurse + 1,
+ &opts);
}
if (is_tuple)
"]"
};
-/* la_val_print implementation for Rust. */
-
+/* la_value_print_inner implementation for Rust. */
static void
-rust_val_print (struct type *type, int embedded_offset,
- CORE_ADDR address, struct ui_file *stream, int recurse,
- struct value *val,
- const struct value_print_options *options)
+rust_value_print_inner (struct value *val, struct ui_file *stream,
+ int recurse,
+ const struct value_print_options *options)
{
- const gdb_byte *valaddr = value_contents_for_printing (val);
+ struct value_print_options opts = *options;
+ opts.deref_ref = 1;
- type = check_typedef (type);
- switch (TYPE_CODE (type))
+ if (opts.prettyformat == Val_prettyformat_default)
+ opts.prettyformat = (opts.prettyformat_structs
+ ? Val_prettyformat : Val_no_prettyformat);
+
+ struct type *type = check_typedef (value_type (val));
+ switch (type->code ())
{
case TYPE_CODE_PTR:
{
LONGEST low_bound, high_bound;
- if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY
+ if (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)) {
- /* We have a pointer to a byte string, so just print
- that. */
- struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
- CORE_ADDR addr;
- struct gdbarch *arch = get_type_arch (type);
- int unit_size = gdbarch_addressable_memory_unit_size (arch);
+ &high_bound))
+ {
+ /* We have a pointer to a byte string, so just print
+ that. */
+ struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
+ CORE_ADDR addr = value_as_address (val);
+ struct gdbarch *arch = get_type_arch (type);
- addr = unpack_pointer (type, valaddr + embedded_offset * unit_size);
- if (options->addressprint)
- {
- fputs_filtered (paddress (arch, addr), stream);
- fputs_filtered (" ", stream);
- }
+ if (opts.addressprint)
+ {
+ fputs_filtered (paddress (arch, addr), stream);
+ fputs_filtered (" ", stream);
+ }
- fputs_filtered ("b", stream);
- val_print_string (TYPE_TARGET_TYPE (elttype), "ASCII", addr,
- high_bound - low_bound + 1, stream,
- options);
- break;
- }
+ fputs_filtered ("b", stream);
+ val_print_string (TYPE_TARGET_TYPE (elttype), "ASCII", addr,
+ high_bound - low_bound + 1, stream,
+ &opts);
+ break;
+ }
}
- /* Fall through. */
+ goto generic_print;
case TYPE_CODE_METHODPTR:
case TYPE_CODE_MEMBERPTR:
- c_val_print (type, embedded_offset, address, stream,
- recurse, val, options);
+ c_value_print_inner (val, stream, recurse, &opts);
break;
case TYPE_CODE_INT:
/* Recognize the unit type. */
if (TYPE_UNSIGNED (type) && TYPE_LENGTH (type) == 0
- && TYPE_NAME (type) != NULL && strcmp (TYPE_NAME (type), "()") == 0)
+ && type->name () != NULL && strcmp (type->name (), "()") == 0)
{
fputs_filtered ("()", stream);
break;
case TYPE_CODE_STRING:
{
- struct gdbarch *arch = get_type_arch (type);
- int unit_size = gdbarch_addressable_memory_unit_size (arch);
LONGEST low_bound, high_bound;
if (!get_array_bounds (type, &low_bound, &high_bound))
encoding. */
fputs_filtered ("b", stream);
rust_printstr (stream, TYPE_TARGET_TYPE (type),
- valaddr + embedded_offset * unit_size,
- high_bound - low_bound + 1, "ASCII", 0, options);
+ value_contents_for_printing (val),
+ high_bound - low_bound + 1, "ASCII", 0, &opts);
}
break;
for printing a union is same as that for a struct, the only
difference is that the input type will have overlapping
fields. */
- val_print_struct (type, embedded_offset, address, stream,
- recurse, val, options);
+ val_print_struct (val, stream, recurse, &opts);
break;
case TYPE_CODE_STRUCT:
if (rust_enum_p (type))
- rust_print_enum (type, embedded_offset, address, stream,
- recurse, val, options);
+ rust_print_enum (val, stream, recurse, &opts);
else
- val_print_struct (type, embedded_offset, address, stream,
- recurse, val, options);
+ val_print_struct (val, stream, recurse, &opts);
break;
default:
generic_print:
/* Nothing special yet. */
- generic_val_print (type, embedded_offset, address, stream,
- recurse, val, options, &rust_decorations);
+ generic_value_print (val, stream, recurse, &opts, &rust_decorations);
}
}
/* Print a tuple type simply. */
if (rust_tuple_type_p (type))
{
- fputs_filtered (TYPE_NAME (type), stream);
+ fputs_filtered (type->name (), stream);
return;
}
/* Compute properties of TYPE here because, in the enum case, the
rest of the code ends up looking only at the variant part. */
- const char *tagname = TYPE_NAME (type);
+ const char *tagname = type->name ();
bool is_tuple_struct = rust_tuple_struct_type_p (type);
bool is_tuple = rust_tuple_type_p (type);
bool is_enum = rust_enum_p (type);
- int enum_discriminant_index = -1;
-
if (for_rust_enum)
{
/* Already printing an outer enum, so nothing to print here. */
if (is_enum)
{
fputs_filtered ("enum ", stream);
-
- if (rust_empty_enum_p (type))
- {
- if (tagname != NULL)
- {
- fputs_filtered (tagname, stream);
- fputs_filtered (" ", stream);
- }
- fputs_filtered ("{}", stream);
- return;
- }
-
- type = TYPE_FIELD_TYPE (type, 0);
-
- struct dynamic_prop *discriminant_prop
- = get_dyn_prop (DYN_PROP_DISCRIMINATED, type);
- struct discriminant_info *info
- = (struct discriminant_info *) discriminant_prop->data.baton;
- enum_discriminant_index = info->discriminant_index;
+ dynamic_prop *prop = type->dyn_prop (DYN_PROP_VARIANT_PARTS);
+ if (prop != nullptr && prop->kind () == PROP_TYPE)
+ type = prop->original_type ();
}
- else if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
+ else if (type->code () == TYPE_CODE_STRUCT)
fputs_filtered ("struct ", stream);
else
fputs_filtered ("union ", stream);
fputs_filtered (tagname, stream);
}
- if (TYPE_NFIELDS (type) == 0 && !is_tuple)
+ if (type->num_fields () == 0 && !is_tuple)
return;
if (for_rust_enum && !flags->print_offsets)
fputs_filtered (is_tuple_struct ? "(" : "{", stream);
field indices here because it simplifies calls to
print_offset_data::update below. */
std::vector<int> fields;
- for (int i = 0; i < TYPE_NFIELDS (type); ++i)
+ for (int i = 0; i < type->num_fields (); ++i)
{
- if (field_is_static (&TYPE_FIELD (type, i)))
+ if (field_is_static (&type->field (i)))
continue;
- if (is_enum && i == enum_discriminant_index)
+ if (is_enum && TYPE_FIELD_ARTIFICIAL (type, i))
continue;
fields.push_back (i);
}
{
QUIT;
- gdb_assert (!field_is_static (&TYPE_FIELD (type, i)));
- gdb_assert (! (is_enum && i == enum_discriminant_index));
+ gdb_assert (!field_is_static (&type->field (i)));
+ gdb_assert (! (is_enum && TYPE_FIELD_ARTIFICIAL (type, i)));
if (flags->print_offsets)
podata->update (type, i, stream);
if (!for_rust_enum || flags->print_offsets)
print_spaces_filtered (level + 2, stream);
if (is_enum)
- fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
+ fputs_styled (TYPE_FIELD_NAME (type, i), variable_name_style.style (),
+ stream);
else if (!is_tuple_struct)
- fprintf_filtered (stream, "%s: ", TYPE_FIELD_NAME (type, i));
+ fprintf_filtered (stream, "%ps: ",
+ styled_string (variable_name_style.style (),
+ TYPE_FIELD_NAME (type, i)));
- rust_internal_print_type (TYPE_FIELD_TYPE (type, i), NULL,
+ rust_internal_print_type (type->field (i).type (), NULL,
stream, (is_enum ? show : show - 1),
level + 2, flags, is_enum, podata);
if (!for_rust_enum || flags->print_offsets)
/* Note that this check of "I" is ok because we only sorted the
fields by offset when print_offsets was set, so we won't take
this branch in that case. */
- else if (i + 1 < TYPE_NFIELDS (type))
+ else if (i + 1 < type->num_fields ())
fputs_filtered (", ", stream);
}
fputs_filtered (is_tuple_struct ? ")" : "}", stream);
}
-/* la_print_typedef implementation for Rust. */
-
-static void
-rust_print_typedef (struct type *type,
- struct symbol *new_symbol,
- struct ui_file *stream)
-{
- type = check_typedef (type);
- fprintf_filtered (stream, "type %s = ", SYMBOL_PRINT_NAME (new_symbol));
- type_print (type, "", stream, 0);
- fprintf_filtered (stream, ";\n");
-}
-
/* la_print_type implementation for Rust. */
static void
{
QUIT;
if (show <= 0
- && TYPE_NAME (type) != NULL)
+ && type->name () != NULL)
{
/* Rust calls the unit type "void" in its debuginfo,
but we don't want to print it as that. */
- if (TYPE_CODE (type) == TYPE_CODE_VOID)
+ if (type->code () == TYPE_CODE_VOID)
fputs_filtered ("()", stream);
else
- fputs_filtered (TYPE_NAME (type), stream);
+ fputs_filtered (type->name (), stream);
return;
}
type = check_typedef (type);
- switch (TYPE_CODE (type))
+ switch (type->code ())
{
case TYPE_CODE_VOID:
/* If we have an enum, we've already printed the type's
if (varstring != NULL)
fputs_filtered (varstring, stream);
fputs_filtered ("(", stream);
- for (int i = 0; i < TYPE_NFIELDS (type); ++i)
+ for (int i = 0; i < type->num_fields (); ++i)
{
QUIT;
if (i > 0)
fputs_filtered (", ", stream);
- rust_internal_print_type (TYPE_FIELD_TYPE (type, i), "", stream,
+ rust_internal_print_type (type->field (i).type (), "", stream,
-1, 0, flags, false, podata);
}
fputs_filtered (")", stream);
/* If it returns unit, we can omit the return type. */
- if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
+ if (TYPE_TARGET_TYPE (type)->code () != TYPE_CODE_VOID)
{
fputs_filtered (" -> ", stream);
rust_internal_print_type (TYPE_TARGET_TYPE (type), "", stream,
stream, show - 1, level, flags, false,
podata);
- if (TYPE_HIGH_BOUND_KIND (TYPE_INDEX_TYPE (type)) == PROP_LOCEXPR
- || TYPE_HIGH_BOUND_KIND (TYPE_INDEX_TYPE (type)) == PROP_LOCLIST)
+ if (type->bounds ()->high.kind () == PROP_LOCEXPR
+ || type->bounds ()->high.kind () == PROP_LOCLIST)
fprintf_filtered (stream, "; variable length");
else if (get_array_bounds (type, &low_bound, &high_bound))
fprintf_filtered (stream, "; %s",
int len = 0;
fputs_filtered ("enum ", stream);
- if (TYPE_NAME (type) != NULL)
+ if (type->name () != NULL)
{
- fputs_filtered (TYPE_NAME (type), stream);
+ fputs_filtered (type->name (), stream);
fputs_filtered (" ", stream);
- len = strlen (TYPE_NAME (type));
+ len = strlen (type->name ());
}
fputs_filtered ("{\n", stream);
- for (int i = 0; i < TYPE_NFIELDS (type); ++i)
+ for (int i = 0; i < type->num_fields (); ++i)
{
const char *name = TYPE_FIELD_NAME (type, i);
QUIT;
if (len > 0
- && strncmp (name, TYPE_NAME (type), len) == 0
+ && strncmp (name, type->name (), len) == 0
&& name[len] == ':'
&& name[len + 1] == ':')
name += len + 2;
- fprintfi_filtered (level + 2, stream, "%s,\n", name);
+ fprintfi_filtered (level + 2, stream, "%ps,\n",
+ styled_string (variable_name_style.style (),
+ name));
}
fputs_filtered ("}", stream);
case TYPE_CODE_PTR:
{
- if (TYPE_NAME (type) != nullptr)
- fputs_filtered (TYPE_NAME (type), stream);
+ if (type->name () != nullptr)
+ fputs_filtered (type->name (), stream);
else
{
/* We currently can't distinguish between pointers and
}
}
-static void
-rust_print_type (struct type *type, const char *varstring,
- struct ui_file *stream, int show, int level,
- const struct type_print_options *flags)
-{
- print_offset_data podata;
- rust_internal_print_type (type, varstring, stream, show, level,
- flags, false, &podata);
-}
-
\f
/* Like arch_composite_type, but uses TYPE to decide how to allocate
if (field2 != NULL)
++nfields;
- TYPE_CODE (result) = TYPE_CODE_STRUCT;
- TYPE_NAME (result) = name;
+ result->set_code (TYPE_CODE_STRUCT);
+ result->set_name (name);
- TYPE_NFIELDS (result) = nfields;
- TYPE_FIELDS (result)
- = (struct field *) TYPE_ZALLOC (result, nfields * sizeof (struct field));
+ result->set_num_fields (nfields);
+ result->set_fields
+ ((struct field *) TYPE_ZALLOC (result, nfields * sizeof (struct field)));
i = 0;
bitpos = 0;
if (field1 != NULL)
{
- struct field *field = &TYPE_FIELD (result, i);
+ struct field *field = &result->field (i);
SET_FIELD_BITPOS (*field, bitpos);
bitpos += TYPE_LENGTH (type1) * TARGET_CHAR_BIT;
FIELD_NAME (*field) = field1;
- FIELD_TYPE (*field) = type1;
+ field->set_type (type1);
++i;
}
if (field2 != NULL)
{
- struct field *field = &TYPE_FIELD (result, i);
+ struct field *field = &result->field (i);
unsigned align = type_align (type2);
if (align != 0)
SET_FIELD_BITPOS (*field, bitpos);
FIELD_NAME (*field) = field2;
- FIELD_TYPE (*field) = type2;
+ field->set_type (type2);
++i;
}
if (i > 0)
TYPE_LENGTH (result)
= (TYPE_FIELD_BITPOS (result, i - 1) / TARGET_CHAR_BIT +
- TYPE_LENGTH (TYPE_FIELD_TYPE (result, i - 1)));
+ TYPE_LENGTH (result->field (i - 1).type ()));
return result;
}
nr_rust_primitive_types
};
-/* la_language_arch_info implementation for Rust. */
-
-static void
-rust_language_arch_info (struct gdbarch *gdbarch,
- struct language_arch_info *lai)
-{
- const struct builtin_type *builtin = builtin_type (gdbarch);
- struct type *tem;
- struct type **types;
- unsigned int length;
-
- 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");
-
- 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, "()");
-
- 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];
-}
-
\f
/* A helper for rust_evaluate_subexp that handles OP_FUNCALL. */
args[0] = arg0;
/* We don't yet implement real Deref semantics. */
- while (TYPE_CODE (value_type (args[0])) == TYPE_CODE_PTR)
+ while (value_type (args[0])->code () == TYPE_CODE_PTR)
args[0] = value_ind (args[0]);
type = value_type (args[0]);
- if ((TYPE_CODE (type) != TYPE_CODE_STRUCT
- && TYPE_CODE (type) != TYPE_CODE_UNION
- && TYPE_CODE (type) != TYPE_CODE_ENUM)
+ if ((type->code () != TYPE_CODE_STRUCT
+ && type->code () != TYPE_CODE_UNION
+ && type->code () != TYPE_CODE_ENUM)
|| rust_tuple_type_p (type))
error (_("Method calls only supported on struct or enum types"));
- if (TYPE_NAME (type) == NULL)
+ if (type->name () == NULL)
error (_("Method call on nameless type"));
- std::string name = std::string (TYPE_NAME (type)) + "::" + method;
+ std::string name = std::string (type->name ()) + "::" + method;
block = get_selected_block (0);
sym = lookup_symbol (name.c_str (), block, VAR_DOMAIN, NULL);
error (_("Could not find function named '%s'"), name.c_str ());
fn_type = SYMBOL_TYPE (sym.symbol);
- if (TYPE_NFIELDS (fn_type) == 0)
+ if (fn_type->num_fields () == 0)
error (_("Function '%s' takes no arguments"), name.c_str ());
- if (TYPE_CODE (TYPE_FIELD_TYPE (fn_type, 0)) == TYPE_CODE_PTR)
+ if (fn_type->field (0).type ()->code () == TYPE_CODE_PTR)
args[0] = value_addr (args[0]);
function = address_of_variable (sym.symbol, block);
*high = 0;
*kind = BOTH_BOUND_DEFAULT;
- if (TYPE_NFIELDS (type) == 0)
+ if (type->num_fields () == 0)
return;
i = 0;
*low = value_as_long (value_field (range, 0));
++i;
}
- if (TYPE_NFIELDS (type) > i
+ if (type->num_fields () > i
&& strcmp (TYPE_FIELD_NAME (type, i), "end") == 0)
{
*kind = (*kind == BOTH_BOUND_DEFAULT
if (noside == EVAL_AVOID_SIDE_EFFECTS)
{
struct type *base_type = nullptr;
- if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
+ if (type->code () == TYPE_CODE_ARRAY)
base_type = TYPE_TARGET_TYPE (type);
else if (rust_slice_type_p (type))
{
- for (int i = 0; i < TYPE_NFIELDS (type); ++i)
+ for (int i = 0; i < type->num_fields (); ++i)
{
if (strcmp (TYPE_FIELD_NAME (type, i), "data_ptr") == 0)
{
- base_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, i));
+ base_type = TYPE_TARGET_TYPE (type->field (i).type ());
break;
}
}
if (base_type == nullptr)
error (_("Could not find 'data_ptr' in slice type"));
}
- else if (TYPE_CODE (type) == TYPE_CODE_PTR)
+ else if (type->code () == TYPE_CODE_PTR)
base_type = TYPE_TARGET_TYPE (type);
else
error (_("Cannot subscript non-array type"));
LONGEST low_bound;
struct value *base;
- if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
+ if (type->code () == TYPE_CODE_ARRAY)
{
base = lhs;
if (!get_array_bounds (type, &low_bound, &high_bound))
low_bound = 0;
high_bound = value_as_long (len);
}
- else if (TYPE_CODE (type) == TYPE_CODE_PTR)
+ else if (type->code () == TYPE_CODE_PTR)
{
base = lhs;
low_bound = 0;
"usize");
const char *new_name = ((type != nullptr
&& rust_slice_type_p (type))
- ? TYPE_NAME (type) : "&[*gdb*]");
+ ? type->name () : "&[*gdb*]");
slice = rust_slice_type (new_name, value_type (result), usize);
/* Preserving the type is enough. */
return value;
}
- if (TYPE_CODE (value_type (value)) == TYPE_CODE_BOOL)
+ if (value_type (value)->code () == TYPE_CODE_BOOL)
result = value_from_longest (value_type (value),
value_logical_not (value));
else
type = value_type (lhs);
- if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
+ if (type->code () == TYPE_CODE_STRUCT)
{
struct type *outer_type = NULL;
if (rust_enum_p (type))
{
+ gdb::array_view<const gdb_byte> view (value_contents (lhs),
+ TYPE_LENGTH (type));
+ type = resolve_dynamic_type (type, view, value_address (lhs));
+
if (rust_empty_enum_p (type))
error (_("Cannot access field %d of empty enum %s"),
- field_number, TYPE_NAME (type));
-
- const gdb_byte *valaddr = value_contents (lhs);
- struct field *variant_field = rust_enum_variant (type, valaddr);
+ field_number, type->name ());
- struct value *union_value = value_primitive_field (lhs, 0, 0,
- type);
-
- int fieldno = (variant_field
- - &TYPE_FIELD (value_type (union_value), 0));
- lhs = value_primitive_field (union_value, 0, fieldno,
- value_type (union_value));
+ int fieldno = rust_enum_variant (type);
+ lhs = value_primitive_field (lhs, 0, fieldno, type);
outer_type = type;
type = value_type (lhs);
}
/* Tuples and tuple structs */
- nfields = TYPE_NFIELDS (type);
+ nfields = type->num_fields ();
if (field_number >= nfields || field_number < 0)
{
if (outer_type != NULL)
error(_("Cannot access field %d of variant %s::%s, "
"there are only %d fields"),
- field_number, TYPE_NAME (outer_type),
- rust_last_path_segment (TYPE_NAME (type)),
+ field_number, outer_type->name (),
+ rust_last_path_segment (type->name ()),
nfields);
else
error(_("Cannot access field %d of %s, "
"there are only %d fields"),
- field_number, TYPE_NAME (type), nfields);
+ field_number, type->name (), nfields);
}
/* Tuples are tuple structs too. */
{
if (outer_type != NULL)
error(_("Variant %s::%s is not a tuple variant"),
- TYPE_NAME (outer_type),
- rust_last_path_segment (TYPE_NAME (type)));
+ outer_type->name (),
+ rust_last_path_segment (type->name ()));
else
error(_("Attempting to access anonymous field %d "
"of %s, which is not a tuple, tuple struct, or "
"tuple-like variant"),
- field_number, TYPE_NAME (type));
+ field_number, type->name ());
}
result = value_primitive_field (lhs, 0, field_number, type);
const char *field_name = &exp->elts[pc + 2].string;
type = value_type (lhs);
- if (TYPE_CODE (type) == TYPE_CODE_STRUCT && rust_enum_p (type))
+ if (type->code () == TYPE_CODE_STRUCT && rust_enum_p (type))
{
+ gdb::array_view<const gdb_byte> view (value_contents (lhs),
+ TYPE_LENGTH (type));
+ type = resolve_dynamic_type (type, view, value_address (lhs));
+
if (rust_empty_enum_p (type))
error (_("Cannot access field %s of empty enum %s"),
- field_name, TYPE_NAME (type));
+ field_name, type->name ());
- const gdb_byte *valaddr = value_contents (lhs);
- struct field *variant_field = rust_enum_variant (type, valaddr);
-
- struct value *union_value = value_primitive_field (lhs, 0, 0,
- type);
-
- int fieldno = (variant_field
- - &TYPE_FIELD (value_type (union_value), 0));
- lhs = value_primitive_field (union_value, 0, fieldno,
- value_type (union_value));
+ int fieldno = rust_enum_variant (type);
+ lhs = value_primitive_field (lhs, 0, fieldno, type);
struct type *outer_type = type;
type = value_type (lhs);
if (rust_tuple_type_p (type) || rust_tuple_struct_type_p (type))
error (_("Attempting to access named field %s of tuple "
"variant %s::%s, which has only anonymous fields"),
- field_name, TYPE_NAME (outer_type),
- rust_last_path_segment (TYPE_NAME (type)));
+ field_name, outer_type->name (),
+ rust_last_path_segment (type->name ()));
try
{
catch (const gdb_exception_error &except)
{
error (_("Could not find field %s of struct variant %s::%s"),
- field_name, TYPE_NAME (outer_type),
- rust_last_path_segment (TYPE_NAME (type)));
+ field_name, outer_type->name (),
+ rust_last_path_segment (type->name ()));
}
}
else
\f
-/* Implementation of la_lookup_symbol_nonlocal for Rust. */
-
-static struct block_symbol
-rust_lookup_symbol_nonlocal (const struct language_defn *langdef,
- const char *name,
- const struct block *block,
- const domain_enum domain)
-{
- 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;
-}
-
-\f
-
-/* la_sniff_from_mangled_name for Rust. */
-
-static int
-rust_sniff_from_mangled_name (const char *mangled, char **demangled)
-{
- *demangled = gdb_demangle (mangled, DMGL_PARAMS | DMGL_ANSI);
- return *demangled != NULL;
-}
-
-\f
-
-/* la_watch_location_expression for Rust. */
-
-static gdb::unique_xmalloc_ptr<char>
-rust_watch_location_expression (struct type *type, CORE_ADDR addr)
-{
- 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 ()));
-}
-
-\f
-
static const struct exp_descriptor exp_descriptor_rust =
{
rust_print_subexp,
".rs", NULL
};
-extern const struct language_defn rust_language_defn =
+/* Constant data representing the Rust language. */
+
+extern const struct language_data rust_language_data =
{
"rust",
"Rust",
macro_expansion_no,
rust_extensions,
&exp_descriptor_rust,
- rust_parse,
- null_post_parser,
- rust_printchar, /* Print a character constant */
- rust_printstr, /* Function to print string constant */
- rust_emitchar, /* Print a single char */
- rust_print_type, /* Print a type using appropriate syntax */
- rust_print_typedef, /* Print a typedef using appropriate syntax */
- rust_val_print, /* Print a value using appropriate syntax */
- 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 */
- rust_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
- basic_lookup_transparent_type,/* lookup_transparent_type */
- gdb_demangle, /* Language specific symbol demangler */
- rust_sniff_from_mangled_name,
- NULL, /* Language specific
- class_name_from_physname */
c_op_print_tab, /* expression operators for printing */
1, /* c-style arrays */
0, /* String lower bound */
- default_word_break_characters,
- default_collect_symbol_completion_matches,
- rust_language_arch_info,
- default_print_array_index,
- default_pass_by_reference,
- c_get_string,
- rust_watch_location_expression,
- NULL, /* la_get_symbol_name_matcher */
- iterate_over_symbols,
- default_search_name_hash,
&default_varobj_ops,
- NULL,
- NULL
+ "{...}" /* la_struct_too_deep_ellipsis */
};
+
+/* Class representing the Rust language. */
+
+class rust_language : public language_defn
+{
+public:
+ rust_language ()
+ : language_defn (language_rust, rust_language_data)
+ { /* Nothing. */ }
+
+ /* 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 (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
+ {
+ 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;
+
+ 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. */
+
+static rust_language rust_language_defn;
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