41 lines
1.0 KiB
JavaScript
41 lines
1.0 KiB
JavaScript
// @flow
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import { getLineInfo, type Position } from "../util/location";
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import CommentsParser from "./comments";
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// This function is used to raise exceptions on parse errors. It
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// takes an offset integer (into the current `input`) to indicate
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// the location of the error, attaches the position to the end
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// of the error message, and then raises a `SyntaxError` with that
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// message.
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export default class LocationParser extends CommentsParser {
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raise(
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pos: number,
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message: string,
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{
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missingPluginNames,
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code,
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}: {
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missingPluginNames?: Array<string>,
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code?: string,
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} = {},
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): empty {
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const loc = getLineInfo(this.input, pos);
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message += ` (${loc.line}:${loc.column})`;
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// $FlowIgnore
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const err: SyntaxError & { pos: number, loc: Position } = new SyntaxError(
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message,
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);
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err.pos = pos;
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err.loc = loc;
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if (missingPluginNames) {
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err.missingPlugin = missingPluginNames;
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}
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if (code !== undefined) {
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err.code = code;
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}
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throw err;
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}
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}
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