1 files changed, 23 insertions, 0 deletions
diff --git a/www/wiki/extensions/ParserFunctions/ParserFunctions.library.php b/www/wiki/extensions/ParserFunctions/ParserFunctions.library.php
new file mode 100644
index 00000000..7dc7c598
--- /dev/null
+++ b/www/wiki/extensions/ParserFunctions/ParserFunctions.library.php
@@ -0,0 +1,23 @@
+<?php
+
+class Scribunto_LuaParserFunctionsLibrary extends Scribunto_LuaLibraryBase {
+	public function register() {
+		$lib = [
+			'expr' => [ $this, 'expr' ],
+		];
+
+		return $this->getEngine()->registerInterface(
+			__DIR__ . '/mw.ext.ParserFunctions.lua', $lib, []
+		);
+	}
+
+	public function expr( $expression = null ) {
+		$this->checkType( 'mw.ext.ParserFunctions.expr', 1, $expression, 'string' );
+		try {
+			return [ ExtParserFunctions::getExprParser()->doExpression( $expression ) ];
+		} catch ( ExprError $e ) {
+			throw new Scribunto_LuaError( $e->getMessage() );
+		}
+	}
+
+}