From 3ce09246d10a267bf00ae8bf37068ec458c69287 Mon Sep 17 00:00:00 2001
From: Ignacio Etcheverry <ignalfonsore@gmail.com>
Date: Sat, 9 May 2020 20:45:43 +0200
Subject: C#: Rewrite GodotTools messaging protocol

---
 modules/mono/editor/code_completion.cpp | 249 ++++++++++++++++++++++++++++++++
 1 file changed, 249 insertions(+)
 create mode 100644 modules/mono/editor/code_completion.cpp

(limited to 'modules/mono/editor/code_completion.cpp')

diff --git a/modules/mono/editor/code_completion.cpp b/modules/mono/editor/code_completion.cpp
new file mode 100644
index 0000000000..7a5e465e7a
--- /dev/null
+++ b/modules/mono/editor/code_completion.cpp
@@ -0,0 +1,249 @@
+/*************************************************************************/
+/*  code_completion.cpp                                                  */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "code_completion.h"
+
+#include "core/project_settings.h"
+#include "editor/editor_file_system.h"
+#include "editor/editor_settings.h"
+#include "scene/gui/control.h"
+#include "scene/main/node.h"
+
+namespace gdmono {
+
+// Almost everything here is taken from functions used by GDScript for code completion, adapted for C#.
+
+_FORCE_INLINE_ String quoted(const String &p_str) {
+	return "\"" + p_str + "\"";
+}
+
+void _add_nodes_suggestions(const Node *p_base, const Node *p_node, PackedStringArray &r_suggestions) {
+	if (p_node != p_base && !p_node->get_owner())
+		return;
+
+	String path_relative_to_orig = p_base->get_path_to(p_node);
+
+	r_suggestions.push_back(quoted(path_relative_to_orig));
+
+	for (int i = 0; i < p_node->get_child_count(); i++) {
+		_add_nodes_suggestions(p_base, p_node->get_child(i), r_suggestions);
+	}
+}
+
+Node *_find_node_for_script(Node *p_base, Node *p_current, const Ref<Script> &p_script) {
+	if (p_current->get_owner() != p_base && p_base != p_current)
+		return nullptr;
+
+	Ref<Script> c = p_current->get_script();
+
+	if (c == p_script)
+		return p_current;
+
+	for (int i = 0; i < p_current->get_child_count(); i++) {
+		Node *found = _find_node_for_script(p_base, p_current->get_child(i), p_script);
+		if (found)
+			return found;
+	}
+
+	return nullptr;
+}
+
+void _get_directory_contents(EditorFileSystemDirectory *p_dir, PackedStringArray &r_suggestions) {
+	for (int i = 0; i < p_dir->get_file_count(); i++) {
+		r_suggestions.push_back(quoted(p_dir->get_file_path(i)));
+	}
+
+	for (int i = 0; i < p_dir->get_subdir_count(); i++) {
+		_get_directory_contents(p_dir->get_subdir(i), r_suggestions);
+	}
+}
+
+Node *_try_find_owner_node_in_tree(const Ref<Script> p_script) {
+	SceneTree *tree = SceneTree::get_singleton();
+	if (!tree)
+		return nullptr;
+	Node *base = tree->get_edited_scene_root();
+	if (base) {
+		base = _find_node_for_script(base, base, p_script);
+	}
+	return base;
+}
+
+PackedStringArray get_code_completion(CompletionKind p_kind, const String &p_script_file) {
+	PackedStringArray suggestions;
+
+	switch (p_kind) {
+		case CompletionKind::INPUT_ACTIONS: {
+			List<PropertyInfo> project_props;
+			ProjectSettings::get_singleton()->get_property_list(&project_props);
+
+			for (List<PropertyInfo>::Element *E = project_props.front(); E; E = E->next()) {
+				const PropertyInfo &prop = E->get();
+
+				if (!prop.name.begins_with("input/"))
+					continue;
+
+				String name = prop.name.substr(prop.name.find("/") + 1, prop.name.length());
+				suggestions.push_back(quoted(name));
+			}
+		} break;
+		case CompletionKind::NODE_PATHS: {
+			{
+				// AutoLoads
+				List<PropertyInfo> props;
+				ProjectSettings::get_singleton()->get_property_list(&props);
+
+				for (List<PropertyInfo>::Element *E = props.front(); E; E = E->next()) {
+					String s = E->get().name;
+					if (!s.begins_with("autoload/")) {
+						continue;
+					}
+					String name = s.get_slice("/", 1);
+					suggestions.push_back(quoted("/root/" + name));
+				}
+			}
+
+			{
+				// Current edited scene tree
+				Ref<Script> script = ResourceLoader::load(p_script_file.simplify_path());
+				Node *base = _try_find_owner_node_in_tree(script);
+				if (base) {
+					_add_nodes_suggestions(base, base, suggestions);
+				}
+			}
+		} break;
+		case CompletionKind::RESOURCE_PATHS: {
+			if (bool(EditorSettings::get_singleton()->get("text_editor/completion/complete_file_paths"))) {
+				_get_directory_contents(EditorFileSystem::get_singleton()->get_filesystem(), suggestions);
+			}
+		} break;
+		case CompletionKind::SCENE_PATHS: {
+			DirAccessRef dir_access = DirAccess::create(DirAccess::ACCESS_RESOURCES);
+			List<String> directories;
+			directories.push_back(dir_access->get_current_dir());
+
+			while (!directories.empty()) {
+				dir_access->change_dir(directories.back()->get());
+				directories.pop_back();
+
+				dir_access->list_dir_begin();
+				String filename = dir_access->get_next();
+
+				while (filename != "") {
+					if (filename == "." || filename == "..") {
+						filename = dir_access->get_next();
+						continue;
+					}
+
+					if (dir_access->dir_exists(filename)) {
+						directories.push_back(dir_access->get_current_dir().plus_file(filename));
+					} else if (filename.ends_with(".tscn") || filename.ends_with(".scn")) {
+						suggestions.push_back(quoted(dir_access->get_current_dir().plus_file(filename)));
+					}
+
+					filename = dir_access->get_next();
+				}
+			}
+		} break;
+		case CompletionKind::SHADER_PARAMS: {
+			print_verbose("Shared params completion for C# not implemented.");
+		} break;
+		case CompletionKind::SIGNALS: {
+			Ref<Script> script = ResourceLoader::load(p_script_file.simplify_path());
+
+			List<MethodInfo> signals;
+			script->get_script_signal_list(&signals);
+
+			StringName native = script->get_instance_base_type();
+			if (native != StringName()) {
+				ClassDB::get_signal_list(native, &signals, /* p_no_inheritance: */ false);
+			}
+
+			for (List<MethodInfo>::Element *E = signals.front(); E; E = E->next()) {
+				const String &signal = E->get().name;
+				suggestions.push_back(quoted(signal));
+			}
+		} break;
+		case CompletionKind::THEME_COLORS: {
+			Ref<Script> script = ResourceLoader::load(p_script_file.simplify_path());
+			Node *base = _try_find_owner_node_in_tree(script);
+			if (base && Object::cast_to<Control>(base)) {
+				List<StringName> sn;
+				Theme::get_default()->get_color_list(base->get_class(), &sn);
+
+				for (List<StringName>::Element *E = sn.front(); E; E = E->next()) {
+					suggestions.push_back(quoted(E->get()));
+				}
+			}
+		} break;
+		case CompletionKind::THEME_CONSTANTS: {
+			Ref<Script> script = ResourceLoader::load(p_script_file.simplify_path());
+			Node *base = _try_find_owner_node_in_tree(script);
+			if (base && Object::cast_to<Control>(base)) {
+				List<StringName> sn;
+				Theme::get_default()->get_constant_list(base->get_class(), &sn);
+
+				for (List<StringName>::Element *E = sn.front(); E; E = E->next()) {
+					suggestions.push_back(quoted(E->get()));
+				}
+			}
+		} break;
+		case CompletionKind::THEME_FONTS: {
+			Ref<Script> script = ResourceLoader::load(p_script_file.simplify_path());
+			Node *base = _try_find_owner_node_in_tree(script);
+			if (base && Object::cast_to<Control>(base)) {
+				List<StringName> sn;
+				Theme::get_default()->get_font_list(base->get_class(), &sn);
+
+				for (List<StringName>::Element *E = sn.front(); E; E = E->next()) {
+					suggestions.push_back(quoted(E->get()));
+				}
+			}
+		} break;
+		case CompletionKind::THEME_STYLES: {
+			Ref<Script> script = ResourceLoader::load(p_script_file.simplify_path());
+			Node *base = _try_find_owner_node_in_tree(script);
+			if (base && Object::cast_to<Control>(base)) {
+				List<StringName> sn;
+				Theme::get_default()->get_stylebox_list(base->get_class(), &sn);
+
+				for (List<StringName>::Element *E = sn.front(); E; E = E->next()) {
+					suggestions.push_back(quoted(E->get()));
+				}
+			}
+		} break;
+		default:
+			ERR_FAIL_V_MSG(suggestions, "Invalid completion kind.");
+	}
+
+	return suggestions;
+}
+
+} // namespace gdmono
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