/* Interface between gdb and its extension languages.
- Copyright (C) 2014-2017 Free Software Foundation, Inc.
+ Copyright (C) 2014-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "event-top.h"
#include "extension.h"
#include "extension-priv.h"
-#include "observer.h"
+#include "observable.h"
#include "cli/cli-script.h"
#include "python/python.h"
#include "guile/guile.h"
int i;
const struct extension_language_defn *extlang;
+ if (has_extension (file, extension_language_gdb.suffix))
+ return &extension_language_gdb;
+
ALL_EXTENSION_LANGUAGES (i, extlang)
{
if (has_extension (file, extlang->suffix))
We don't know in advance which extension language will provide a
pretty-printer for the type, so all are initialized. */
-struct ext_lang_type_printers *
-start_ext_lang_type_printers (void)
+ext_lang_type_printers::ext_lang_type_printers ()
{
- struct ext_lang_type_printers *printers
- = XCNEW (struct ext_lang_type_printers);
int i;
const struct extension_language_defn *extlang;
ALL_ENABLED_EXTENSION_LANGUAGES (i, extlang)
{
if (extlang->ops->start_type_printers != NULL)
- extlang->ops->start_type_printers (extlang, printers);
+ extlang->ops->start_type_printers (extlang, this);
}
-
- return printers;
}
/* Iteratively try the type pretty-printers specified by PRINTERS
return NULL;
}
-/* Call this after pretty-printing a type to release all memory held
- by PRINTERS. */
-
-void
-free_ext_lang_type_printers (struct ext_lang_type_printers *printers)
+ext_lang_type_printers::~ext_lang_type_printers ()
{
int i;
const struct extension_language_defn *extlang;
ALL_ENABLED_EXTENSION_LANGUAGES (i, extlang)
{
if (extlang->ops->free_type_printers != NULL)
- extlang->ops->free_type_printers (extlang, printers);
+ extlang->ops->free_type_printers (extlang, this);
}
-
- xfree (printers);
}
\f
/* Try to pretty-print a value of type TYPE located at VAL's contents
rather than trying filters in other extension languages. */
enum ext_lang_bt_status
-apply_ext_lang_frame_filter (struct frame_info *frame, int flags,
+apply_ext_lang_frame_filter (struct frame_info *frame,
+ frame_filter_flags flags,
enum ext_lang_frame_args args_type,
struct ui_out *out,
int frame_low, int frame_high)
return result;
}
-\f
-/* xmethod support. */
-/* The xmethod API routines do not have "ext_lang" in the name because
- the name "xmethod" implies that this routine deals with extension
- languages. Plus some of the methods take a xmethod_foo * "self/this"
- arg, not an extension_language_defn * arg. */
-
-/* Returns a new xmethod_worker with EXTLANG and DATA. Space for the
- result must be freed with free_xmethod_worker. */
-
-struct xmethod_worker *
-new_xmethod_worker (const struct extension_language_defn *extlang, void *data)
-{
- struct xmethod_worker *worker = XCNEW (struct xmethod_worker);
-
- worker->extlang = extlang;
- worker->data = data;
- worker->value = NULL;
-
- return worker;
-}
+/* See extension.h. */
-/* Clones WORKER and returns a new but identical worker.
- The function get_matching_xmethod_workers (see below), returns a
- vector of matching workers. If a particular worker is selected by GDB
- to invoke a method, then this function can help in cloning the
- selected worker and freeing up the vector via a cleanup.
-
- Space for the result must be freed with free_xmethod_worker. */
-
-struct xmethod_worker *
-clone_xmethod_worker (struct xmethod_worker *worker)
-{
- struct xmethod_worker *new_worker;
- const struct extension_language_defn *extlang = worker->extlang;
-
- gdb_assert (extlang->ops->clone_xmethod_worker_data != NULL);
-
- new_worker = new_xmethod_worker
- (extlang,
- extlang->ops->clone_xmethod_worker_data (extlang, worker->data));
-
- return new_worker;
-}
-
-/* If a method with name METHOD_NAME is to be invoked on an object of type
- TYPE, then all entension languages are searched for implementations of
- methods with name METHOD. All matches found are returned as a vector
- of 'xmethod_worker_ptr' objects. If no matching methods are
- found, NULL is returned. */
-
-VEC (xmethod_worker_ptr) *
-get_matching_xmethod_workers (struct type *type, const char *method_name)
+void
+get_matching_xmethod_workers (struct type *type, const char *method_name,
+ std::vector<xmethod_worker_up> *workers)
{
- VEC (xmethod_worker_ptr) *workers = NULL;
int i;
const struct extension_language_defn *extlang;
ALL_ENABLED_EXTENSION_LANGUAGES (i, extlang)
{
- VEC (xmethod_worker_ptr) *lang_workers, *new_vec;
enum ext_lang_rc rc;
/* If an extension language does not support xmethods, ignore
rc = extlang->ops->get_matching_xmethod_workers (extlang,
type, method_name,
- &lang_workers);
+ workers);
if (rc == EXT_LANG_RC_ERROR)
- {
- free_xmethod_worker_vec (workers);
- error (_("Error while looking for matching xmethod workers "
- "defined in %s."), extlang->capitalized_name);
- }
-
- new_vec = VEC_merge (xmethod_worker_ptr, workers, lang_workers);
- /* Free only the vectors and not the elements as NEW_VEC still
- contains them. */
- VEC_free (xmethod_worker_ptr, workers);
- VEC_free (xmethod_worker_ptr, lang_workers);
- workers = new_vec;
+ error (_("Error while looking for matching xmethod workers "
+ "defined in %s."), extlang->capitalized_name);
}
-
- return workers;
}
-/* Return the arg types of the xmethod encapsulated in WORKER.
- An array of arg types is returned. The length of the array is returned in
- NARGS. The type of the 'this' object is returned as the first element of
- array. */
+/* See extension.h. */
-struct type **
-get_xmethod_arg_types (struct xmethod_worker *worker, int *nargs)
+std::vector<type *>
+xmethod_worker::get_arg_types ()
{
- enum ext_lang_rc rc;
- struct type **type_array = NULL;
- const struct extension_language_defn *extlang = worker->extlang;
-
- gdb_assert (extlang->ops->get_xmethod_arg_types != NULL);
+ std::vector<type *> type_array;
- rc = extlang->ops->get_xmethod_arg_types (extlang, worker, nargs,
- &type_array);
+ ext_lang_rc rc = do_get_arg_types (&type_array);
if (rc == EXT_LANG_RC_ERROR)
- {
- error (_("Error while looking for arg types of a xmethod worker "
- "defined in %s."), extlang->capitalized_name);
- }
+ error (_("Error while looking for arg types of a xmethod worker "
+ "defined in %s."), m_extlang->capitalized_name);
return type_array;
}
-/* Return the type of the result of the xmethod encapsulated in WORKER.
- OBJECT, ARGS, NARGS are the same as for invoke_xmethod. */
+/* See extension.h. */
struct type *
-get_xmethod_result_type (struct xmethod_worker *worker,
- struct value *object, struct value **args, int nargs)
+xmethod_worker::get_result_type (value *object, gdb::array_view<value *> args)
{
- enum ext_lang_rc rc;
- struct type *result_type;
- const struct extension_language_defn *extlang = worker->extlang;
-
- gdb_assert (extlang->ops->get_xmethod_arg_types != NULL);
+ type *result_type;
- rc = extlang->ops->get_xmethod_result_type (extlang, worker,
- object, args, nargs,
- &result_type);
+ ext_lang_rc rc = do_get_result_type (object, args, &result_type);
if (rc == EXT_LANG_RC_ERROR)
{
error (_("Error while fetching result type of an xmethod worker "
- "defined in %s."), extlang->capitalized_name);
+ "defined in %s."), m_extlang->capitalized_name);
}
return result_type;
}
-/* Invokes the xmethod encapsulated in WORKER and returns the result.
- The method is invoked on OBJ with arguments in the ARGS array. NARGS is
- the length of the this array. */
-
-struct value *
-invoke_xmethod (struct xmethod_worker *worker, struct value *obj,
- struct value **args, int nargs)
-{
- gdb_assert (worker->extlang->ops->invoke_xmethod != NULL);
-
- return worker->extlang->ops->invoke_xmethod (worker->extlang, worker,
- obj, args, nargs);
-}
-
-/* Frees the xmethod worker WORKER. */
-
-void
-free_xmethod_worker (struct xmethod_worker *worker)
-{
- gdb_assert (worker->extlang->ops->free_xmethod_worker_data != NULL);
- worker->extlang->ops->free_xmethod_worker_data (worker->extlang,
- worker->data);
- xfree (worker);
-}
-
-/* Frees a vector of xmethod_workers VEC. */
-
-void
-free_xmethod_worker_vec (void *vec)
-{
- int i;
- struct xmethod_worker *worker;
- VEC (xmethod_worker_ptr) *v = (VEC (xmethod_worker_ptr) *) vec;
-
- for (i = 0; VEC_iterate (xmethod_worker_ptr, v, i, worker); i++)
- free_xmethod_worker (worker);
-
- VEC_free (xmethod_worker_ptr, v);
-}
-\f
/* Called via an observer before gdb prints its prompt.
Iterate over the extension languages giving them a chance to
change the prompt. The first one to change the prompt wins,
void
_initialize_extension (void)
{
- observer_attach_before_prompt (ext_lang_before_prompt);
+ gdb::observers::before_prompt.attach (ext_lang_before_prompt);
}
projects / deliverable / binutils-gdb.git / blobdiff