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gem-graph-client/libide/lsp/ide-lsp-completion-provider.c

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/* ide-lsp-completion-provider.c
*
* Copyright 2016-2019 Christian Hergert <chergert@redhat.com>
*
* 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/>.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#define G_LOG_DOMAIN "ide-lsp-completion-provider"
#include "config.h"
#include <libide-code.h>
#include <libide-sourceview.h>
#include <libide-threading.h>
#include <jsonrpc-glib.h>
#include "ide-lsp-completion-provider.h"
#include "ide-lsp-completion-item.h"
#include "ide-lsp-completion-results.h"
#include "ide-lsp-util.h"
typedef struct
{
IdeLspClient *client;
gchar *word;
gchar **trigger_chars;
} IdeLspCompletionProviderPrivate;
static void provider_iface_init (IdeCompletionProviderInterface *iface);
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (IdeLspCompletionProvider, ide_lsp_completion_provider, IDE_TYPE_OBJECT,
G_ADD_PRIVATE (IdeLspCompletionProvider)
G_IMPLEMENT_INTERFACE (IDE_TYPE_COMPLETION_PROVIDER, provider_iface_init))
enum {
PROP_0,
PROP_CLIENT,
N_PROPS
};
static GParamSpec *properties [N_PROPS];
static void
ide_lsp_completion_provider_finalize (GObject *object)
{
IdeLspCompletionProvider *self = (IdeLspCompletionProvider *)object;
IdeLspCompletionProviderPrivate *priv = ide_lsp_completion_provider_get_instance_private (self);
g_clear_object (&priv->client);
g_clear_pointer (&priv->word, g_free);
g_clear_pointer (&priv->trigger_chars, g_free);
G_OBJECT_CLASS (ide_lsp_completion_provider_parent_class)->finalize (object);
}
static void
ide_lsp_completion_provider_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
IdeLspCompletionProvider *self = IDE_LSP_COMPLETION_PROVIDER (object);
switch (prop_id)
{
case PROP_CLIENT:
g_value_set_object (value, ide_lsp_completion_provider_get_client (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
ide_lsp_completion_provider_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
IdeLspCompletionProvider *self = IDE_LSP_COMPLETION_PROVIDER (object);
switch (prop_id)
{
case PROP_CLIENT:
ide_lsp_completion_provider_set_client (self, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
ide_lsp_completion_provider_class_init (IdeLspCompletionProviderClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = ide_lsp_completion_provider_finalize;
object_class->get_property = ide_lsp_completion_provider_get_property;
object_class->set_property = ide_lsp_completion_provider_set_property;
properties [PROP_CLIENT] =
g_param_spec_object ("client",
"Client",
"The Language Server client",
IDE_TYPE_LSP_CLIENT,
(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
g_object_class_install_properties (object_class, N_PROPS, properties);
}
static void
ide_lsp_completion_provider_init (IdeLspCompletionProvider *self)
{
}
/**
* ide_lsp_completion_provider_get_client:
* @self: An #IdeLspCompletionProvider
*
* Gets the client for the completion provider.
*
* Returns: (transfer none) (nullable): An #IdeLspClient or %NULL
*/
IdeLspClient *
ide_lsp_completion_provider_get_client (IdeLspCompletionProvider *self)
{
IdeLspCompletionProviderPrivate *priv = ide_lsp_completion_provider_get_instance_private (self);
g_return_val_if_fail (IDE_IS_LSP_COMPLETION_PROVIDER (self), NULL);
return priv->client;
}
static void
on_notify_server_capabilities_cb (IdeLspCompletionProvider *self,
GParamSpec *pspec,
IdeLspClient *client)
{
IdeLspCompletionProviderPrivate *priv = ide_lsp_completion_provider_get_instance_private (self);
GVariant *capabilities;
IDE_ENTRY;
g_assert (IDE_LSP_COMPLETION_PROVIDER (self));
g_assert (IDE_IS_LSP_CLIENT (client));
capabilities = ide_lsp_client_get_server_capabilities (client);
if (capabilities != NULL)
{
g_auto(GStrv) trigger_chars = NULL;
gboolean r;
r = JSONRPC_MESSAGE_PARSE (capabilities,
"completionProvider", "{",
"triggerCharacters", JSONRPC_MESSAGE_GET_STRV (&trigger_chars),
"}"
);
if (r)
{
g_clear_pointer (&priv->trigger_chars, g_strfreev);
priv->trigger_chars = g_steal_pointer (&trigger_chars);
}
}
IDE_EXIT;
}
void
ide_lsp_completion_provider_set_client (IdeLspCompletionProvider *self,
IdeLspClient *client)
{
IdeLspCompletionProviderPrivate *priv = ide_lsp_completion_provider_get_instance_private (self);
g_return_if_fail (IDE_IS_LSP_COMPLETION_PROVIDER (self));
g_return_if_fail (!client || IDE_IS_LSP_CLIENT (client));
if (g_set_object (&priv->client, client))
{
if (client != NULL)
{
g_signal_connect_object (client,
"notify::server-capabilities",
G_CALLBACK (on_notify_server_capabilities_cb),
self,
G_CONNECT_SWAPPED);
on_notify_server_capabilities_cb (self, NULL, client);
}
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CLIENT]);
}
}
static gint
ide_lsp_completion_provider_get_priority (IdeCompletionProvider *provider,
IdeCompletionContext *context)
{
return IDE_LSP_COMPLETION_PROVIDER_PRIORITY;
}
static void
ide_lsp_completion_provider_complete_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
IdeLspCompletionProviderPrivate *priv;
IdeLspCompletionProvider *self;
IdeLspClient *client = (IdeLspClient *)object;
g_autoptr(GVariant) return_value = NULL;
g_autoptr(IdeTask) task = user_data;
g_autoptr(GError) error = NULL;
IdeLspCompletionResults *ret;
IDE_ENTRY;
g_assert (IDE_IS_LSP_CLIENT (client));
g_assert (G_IS_ASYNC_RESULT (result));
if (!ide_lsp_client_call_finish (client, result, &return_value, &error))
{
ide_task_return_error (task, g_steal_pointer (&error));
return;
}
self = ide_task_get_source_object (task);
priv = ide_lsp_completion_provider_get_instance_private (self);
ret = ide_lsp_completion_results_new (return_value);
if (priv->word != NULL && *priv->word != 0)
ide_lsp_completion_results_refilter (ret, priv->word);
ide_task_return_object (task, g_steal_pointer (&ret));
IDE_EXIT;
}
static void
ide_lsp_completion_provider_populate_async (IdeCompletionProvider *provider,
IdeCompletionContext *context,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
IdeLspCompletionProvider *self = (IdeLspCompletionProvider *)provider;
IdeLspCompletionProviderPrivate *priv = ide_lsp_completion_provider_get_instance_private (self);
IdeCompletionActivation activation;
g_autoptr(IdeTask) task = NULL;
g_autoptr(GVariant) params = NULL;
g_autofree gchar *uri = NULL;
GtkTextIter iter, end;
GtkTextBuffer *buffer;
gint trigger_kind;
gint line;
gint column;
IDE_ENTRY;
g_assert (IDE_IS_LSP_COMPLETION_PROVIDER (self));
g_assert (IDE_IS_COMPLETION_CONTEXT (context));
task = ide_task_new (self, cancellable, callback, user_data);
ide_task_set_source_tag (task, ide_lsp_completion_provider_populate_async);
if (priv->client == NULL)
{
ide_task_return_new_error (task,
G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
"No client for completion");
IDE_EXIT;
}
ide_completion_context_get_bounds (context, &iter, &end);
activation = ide_completion_context_get_activation (context);
if (activation == IDE_COMPLETION_TRIGGERED)
trigger_kind = 2;
else
trigger_kind = 1;
g_clear_pointer (&priv->word, g_free);
priv->word = ide_completion_context_get_word (context);
buffer = ide_completion_context_get_buffer (context);
uri = ide_buffer_dup_uri (IDE_BUFFER (buffer));
line = gtk_text_iter_get_line (&iter);
column = gtk_text_iter_get_line_offset (&iter);
params = JSONRPC_MESSAGE_NEW (
"textDocument", "{",
"uri", JSONRPC_MESSAGE_PUT_STRING (uri),
"}",
"position", "{",
"line", JSONRPC_MESSAGE_PUT_INT32 (line),
"character", JSONRPC_MESSAGE_PUT_INT32 (column),
"}",
"context", "{",
"triggerKind", JSONRPC_MESSAGE_PUT_INT32 (trigger_kind),
"}"
);
ide_lsp_client_call_async (priv->client,
"textDocument/completion",
params,
cancellable,
ide_lsp_completion_provider_complete_cb,
g_steal_pointer (&task));
IDE_EXIT;
}
static GListModel *
ide_lsp_completion_provider_populate_finish (IdeCompletionProvider *provider,
GAsyncResult *result,
GError **error)
{
GListModel *ret;
IDE_ENTRY;
g_assert (IDE_IS_COMPLETION_PROVIDER (provider));
g_assert (IDE_IS_TASK (result));
ret = ide_task_propagate_object (IDE_TASK (result), error);
IDE_RETURN (ret);
}
static gboolean
ide_lsp_completion_provider_refilter (IdeCompletionProvider *provider,
IdeCompletionContext *context,
GListModel *model)
{
IdeLspCompletionResults *results = (IdeLspCompletionResults *)model;
g_autofree gchar *word = NULL;
g_assert (IDE_IS_LSP_COMPLETION_PROVIDER (provider));
g_assert (IDE_IS_COMPLETION_CONTEXT (context));
g_assert (IDE_IS_LSP_COMPLETION_RESULTS (results));
word = ide_completion_context_get_word (context);
ide_lsp_completion_results_refilter (results, word);
return TRUE;
}
static void
ide_lsp_completion_provider_display_proposal (IdeCompletionProvider *provider,
IdeCompletionListBoxRow *row,
IdeCompletionContext *context,
const gchar *typed_text,
IdeCompletionProposal *proposal)
{
IdeLspCompletionItem *item = (IdeLspCompletionItem *)proposal;
g_autofree gchar *markup = NULL;
g_assert (IDE_IS_LSP_COMPLETION_PROVIDER (provider));
g_assert (IDE_IS_COMPLETION_LIST_BOX_ROW (row));
g_assert (IDE_IS_COMPLETION_CONTEXT (context));
g_assert (IDE_IS_LSP_COMPLETION_ITEM (proposal));
markup = ide_lsp_completion_item_get_markup (item, typed_text);
ide_completion_list_box_row_set_icon_name (row, ide_lsp_completion_item_get_icon_name (item));
ide_completion_list_box_row_set_left (row, NULL);
ide_completion_list_box_row_set_center_markup (row, markup);
ide_completion_list_box_row_set_right (row, NULL);
}
static void
ide_lsp_completion_provider_apply_additional_edits_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
IdeBufferManager *bufmgr = (IdeBufferManager *)object;
g_autoptr(GError) error = NULL;
IDE_ENTRY;
g_assert (IDE_IS_BUFFER_MANAGER (bufmgr));
g_assert (G_IS_ASYNC_RESULT (result));
if (!ide_buffer_manager_apply_edits_finish (bufmgr, result, &error))
g_warning ("Failed to apply additional text edits for completion: %s",
error->message);
IDE_EXIT;
}
static void
ide_lsp_completion_provider_activate_proposal (IdeCompletionProvider *provider,
IdeCompletionContext *completion_context,
IdeCompletionProposal *proposal,
const GdkEventKey *key)
{
g_autoptr(IdeSnippet) snippet = NULL;
IdeSnippetChunk *chunk;
GtkTextBuffer *buffer;
GtkTextView *view;
GtkTextIter begin, end;
g_autoptr(GPtrArray) additional_text_edits;
IdeBufferManager *buffer_manager;
const gchar *text = NULL;
g_assert (IDE_IS_COMPLETION_PROVIDER (provider));
g_assert (IDE_IS_COMPLETION_CONTEXT (completion_context));
g_assert (IDE_IS_LSP_COMPLETION_ITEM (proposal));
buffer = ide_completion_context_get_buffer (completion_context);
g_assert (IDE_IS_BUFFER (buffer));
view = ide_completion_context_get_view (completion_context);
snippet = ide_lsp_completion_item_get_snippet (IDE_LSP_COMPLETION_ITEM (proposal));
if ((chunk = ide_snippet_get_nth_chunk (snippet, 0)))
text = ide_snippet_chunk_get_text (chunk);
gtk_text_buffer_begin_user_action (buffer);
if (ide_completion_context_get_bounds (completion_context, &begin, &end))
{
gtk_text_buffer_delete (buffer, &begin, &end);
ide_completion_remove_common_prefix (ide_completion_context_get_completion (completion_context), &begin, text);
}
ide_source_view_push_snippet (IDE_SOURCE_VIEW (view), snippet, &begin);
gtk_text_buffer_end_user_action (buffer);
additional_text_edits =
ide_lsp_completion_item_get_additional_text_edits (IDE_LSP_COMPLETION_ITEM (proposal),
ide_buffer_get_file (IDE_BUFFER (buffer)));
IDE_PTR_ARRAY_SET_FREE_FUNC (additional_text_edits, g_object_unref);
if (additional_text_edits != NULL)
{
IdeContext *context = ide_object_get_context (IDE_OBJECT (provider));
g_return_if_fail (context != NULL);
buffer_manager = ide_buffer_manager_from_context (context);
ide_buffer_manager_apply_edits_async (buffer_manager,
IDE_PTR_ARRAY_STEAL_FULL (&additional_text_edits),
NULL,
ide_lsp_completion_provider_apply_additional_edits_cb,
NULL);
}
}
static gchar *
ide_lsp_completion_provider_get_comment (IdeCompletionProvider *provider,
IdeCompletionProposal *proposal)
{
g_assert (IDE_IS_COMPLETION_PROVIDER (provider));
g_assert (IDE_IS_LSP_COMPLETION_ITEM (proposal));
return g_strdup (ide_lsp_completion_item_get_detail (IDE_LSP_COMPLETION_ITEM (proposal)));
}
static gboolean
ide_lsp_completion_provider_is_trigger (IdeCompletionProvider *provider,
const GtkTextIter *iter,
gunichar ch)
{
IdeLspCompletionProvider *self = (IdeLspCompletionProvider *)provider;
IdeLspCompletionProviderPrivate *priv = ide_lsp_completion_provider_get_instance_private (self);
g_assert (IDE_IS_LSP_COMPLETION_PROVIDER (self));
g_assert (iter != NULL);
if (priv->trigger_chars != NULL)
{
for (guint i = 0; priv->trigger_chars[i]; i++)
{
const gchar *trigger = priv->trigger_chars[i];
/* Technically, since these are strings they can be more than
* one character long. But I haven't seen anything actually
* do that in the wild yet.
*/
if (ch == g_utf8_get_char (trigger))
return TRUE;
}
}
return FALSE;
}
static void
provider_iface_init (IdeCompletionProviderInterface *iface)
{
iface->get_priority = ide_lsp_completion_provider_get_priority;
iface->populate_async = ide_lsp_completion_provider_populate_async;
iface->populate_finish = ide_lsp_completion_provider_populate_finish;
iface->refilter = ide_lsp_completion_provider_refilter;
iface->display_proposal = ide_lsp_completion_provider_display_proposal;
iface->activate_proposal = ide_lsp_completion_provider_activate_proposal;
iface->get_comment = ide_lsp_completion_provider_get_comment;
iface->is_trigger = ide_lsp_completion_provider_is_trigger;
}
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