feat: add molang package

1. upgrade bukkit chat
2. fix config update error

Signed-off-by: MiaoWoo <admin@yumc.pw>

packages/molang/src/parser/expressions/function.ts

@@ -0,0 +1,46 @@
+import { NameExpression } from './name'
+import { Expression, IExpression } from '../expression'
+
+export class FunctionExpression extends Expression {
+	type = 'FunctionExpression'
+
+	constructor(protected name: IExpression, protected args: IExpression[]) {
+		super()
+	}
+
+	get allExpressions() {
+		return [this.name, ...this.args]
+	}
+	setExpressionAt(index: number, expr: Expression) {
+		if (index === 0) this.name = expr
+		else if (index > 0) this.args[index - 1] = expr
+	}
+
+	isStatic() {
+		return false
+	}
+
+	eval() {
+		const args: unknown[] = []
+		let i = 0
+		while (i < this.args.length) args.push(this.args[i++].eval())
+
+		const func = <(...args: unknown[]) => unknown>this.name.eval()
+		if (typeof func !== 'function')
+			throw new Error(
+				`${(<NameExpression>this.name).toString()} is not callable!`
+			)
+		return func(...args)
+	}
+
+	toString() {
+		let str = `${this.name.toString()}(`
+		for (let i = 0; i < this.args.length; i++) {
+			str += `${this.args[i].toString()}${
+				i + 1 < this.args.length ? ',' : ''
+			}`
+		}
+
+		return `${str})`
+	}
+}