Class IndexReference

src/interpreter/reference.ts:53–76

}

class IndexReference implements Reference {
	constructor(private target: Value[], private index: number) {
		this.type = 'reference';
	}

	type: 'reference';

	get(): Value {
		this.assertIndexInRange();
		return this.target[this.index]!;
	}

	set(value: Value): void {
		this.assertIndexInRange();
		this.target[this.index] = value;
	}

	private assertIndexInRange(): void {
		const index = this.index;
		if (index < 0 || this.target.length <= index) {
			throw new AiScriptIndexOutOfRangeError(`Index out of range. index: ${this.index} max: ${this.target.length - 1}`);
		}
	}
}

class PropReference implements Reference {
	constructor(private target: Map<string, Value>, private index: string) {