add base of definition module

lua/LspUI/_meta.lua

@@ -23,9 +23,14 @@
 --- @field command_enable boolean? whether enable command for `hover`
 --- @field key_binding { prev: string?, next: string?, quit: string? }? keybind for `hover`
 
+--- @class LspUI_definition_config
+--- @field enable boolean? whether enable `definition` module
+--- @field command_enable boolean? whether enable command for `definition`
+
 --- @class LspUI_config config for LspUI
 --- @field rename LspUI_rename_config? `rename` module
 --- @field lightbulb LspUI_lightbulb_config? `lightbulb` module
 --- @field code_action LspUI_code_action_config? `code_action` module
 --- @field diagnostic LspUI_diagnostic_config? `diagnostic` module
 --- @field hover  LspUI_hover_config? `hover` module
+--- @field definition LspUI_definition_config? `definition` module

lua/LspUI/api.lua

@@ -21,6 +21,7 @@ M.api = {
 	rename = modules.code_action.run,
 	diagnostic = modules.diagnostic.run,
 	hover = modules.hover.run,
+	definition = modules.definition.run,
 }
 
 return M

lua/LspUI/config.lua

@@ -49,6 +49,12 @@ local default_hover_config = {
 	},
 }
 
+--- @type LspUI_definition_config
+local default_definition_config = {
+	enable = true,
+	command_enable = true,
+}
+
 -- default config
 --- @type LspUI_config
 local default_config = {
@@ -57,6 +63,7 @@ local default_config = {
 	code_action = default_code_action_config,
 	diagnostic = default_diagnostic_config,
 	hover = default_hover_config,
+	definition = default_definition_config,
 }
 
 -- Prevent plugins from being initialized multiple times

lua/LspUI/definition/init.lua

@@ -0,0 +1,31 @@
+local config = require("LspUI.config")
+local command = require("LspUI.command")
+local lib_notify = require("LspUI.lib.notify")
+local M = {}
+-- whether this module is initialized
+local is_initialized = false
+
+M.init = function()
+	if not config.options.definition.enable then
+		return
+	end
+
+	if is_initialized then
+		return
+	end
+
+	is_initialized = true
+
+	if config.options.definition.command_enable then
+		command.register_command("definition", M.run, {})
+	end
+end
+
+M.run = function()
+	if not config.options.definition.enable then
+		lib_notify.Info("definition is not enabled!")
+		return
+	end
+end
+
+return M

lua/LspUI/definition/util.lua

@@ -0,0 +1,3 @@
+local M = {}
+
+return M

lua/LspUI/modules.lua

@@ -4,4 +4,5 @@ return {
 	code_action = require("LspUI.code_action"),
 	diagnostic = require("LspUI.diagnostic"),
 	hover = require("LspUI.hover"),
+	definition = require("LspUI.definition"),
 }