Method _eval

src/interpreter/index.ts:448–466

(node: Ast.Node, scope: Scope, callStack: readonly CallInfo[])

	@autobind
	private _eval(node: Ast.Node, scope: Scope, callStack: readonly CallInfo[]): Promise<Value | Control> {
		return this.__eval(node, scope, callStack).catch(e => {
			if (e.pos) throw e;
			else {
				const e2 = (e instanceof AiScriptError) ? e : new NonAiScriptError(e);
				e2.pos = node.loc.start;
				e2.message = [
					e2.message,
					...[...callStack, { pos: e2.pos }].map(({ pos }, i) => {
						const name = callStack[i - 1]?.name ?? '<root>';
						return pos
							? `  at ${name} (Line ${pos.line}, Column ${pos.column})`
							: `  at ${name}`;
					}).reverse(),
				].join('\n');
				throw e2;
			}
		});
	}

	@autobind
	private _evalSync(node: Ast.Node, scope: Scope, callStack: readonly CallInfo[]): Value | Control {