Add RubyLSP indexing enhancement for register_element (#907)

Author: joeldrapper

lib/phlex.rb

@@ -6,6 +6,8 @@
 
 module Phlex
 	Loader = Zeitwerk::Loader.for_gem.tap do |loader|
+		loader.ignore("#{__dir__}/ruby_lsp")
+
 		loader.inflector.inflect(
 			"csv" => "CSV",
 			"fifo" => "FIFO",

lib/ruby_lsp/phlex/addon.rb

@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+require "ruby_lsp/addon"
+
+module RubyLsp
+	module Phlex
+		class Addon < ::RubyLsp::Addon
+			def activate(global_state, message_queue)
+			end
+
+			def deactivate
+			end
+
+			def name
+				"Phlex"
+			end
+
+			def version
+				"0.1.0"
+			end
+		end
+
+		class IndexingEnhancement < RubyIndexer::Enhancement
+			def on_call_node_enter(node)
+				name = node.name
+				owner = @listener.current_owner
+				location = node.location
+				arguments = node.arguments&.arguments
+
+				return unless owner
+				return unless :register_element == name
+
+				case arguments
+				in [Prism::SymbolNode[unescaped: String => method_name], *]
+					tag_name = method_name.tr("_", "-")
+					arguments[1] in Prism::StringNode[unescaped: String => tag_name]
+
+					@listener.add_method(method_name, location, [
+						RubyIndexer::Entry::Signature.new([
+							RubyIndexer::Entry::KeywordRestParameter.new(name: :attributes),
+							RubyIndexer::Entry::BlockParameter.new(name: :content),
+						]),
+					], visibility: :public, comments: "Outputs a `<#{tag_name}>` tag.")
+				end
+			end
+		end
+	end
+end