Method add

src/interpreter/scope.ts:116–127

(name: string, variable: Variable)

	 */
	@autobind
	public add(name: string, variable: Variable): void {
		this.log('add', { var: name, val: variable });
		const states = this.layerdStates[0]!;
		if (states.has(name)) {
			throw new AiScriptRuntimeError(
				`Variable '${name}' already exists in scope '${this.name}'`,
				{ scope: this.layerdStates });
		}
		states.set(name, variable);
		if (this.parent == null) this.onUpdated(name, variable.value);
		else if (this.nsName != null) this.parent.add(this.nsName + ':' + name, variable);
	}

	/**
	 * 指定した名前の変数に値を再代入します