decaffeinate-parser/dist/mappers/mapIn.mjs

A better AST for CoffeeScript, inspired by CoffeeScriptRedux.

import SourceType from 'coffee-lex/dist/SourceType';
import { InOp } from '../nodes';
import getLocation from '../util/getLocation';
import mapAny from './mapAny';
export default function mapIn(context, node) {
    // We don't use the `negated` flag on `node` because it gets set to
    // `true` when a parent `If` is an `unless`.
    var _a = getLocation(context, node), line = _a.line, column = _a.column, start = _a.start, end = _a.end, raw = _a.raw;
    var left = mapAny(context, node.object);
    var right = mapAny(context, node.array);
    var isNot = false;
    var lastTokenIndexOfLeft = context.sourceTokens.indexOfTokenEndingAtSourceIndex(left.end);
    var firstTokenIndexOfRight = context.sourceTokens.indexOfTokenStartingAtSourceIndex(right.start);
    var relationTokenIndex = context.sourceTokens.indexOfTokenMatchingPredicate(function (token) { return token.type === SourceType.RELATION; }, lastTokenIndexOfLeft, firstTokenIndexOfRight);
    if (relationTokenIndex) {
        var relationToken = context.sourceTokens.tokenAtIndex(relationTokenIndex);
        if (relationToken) {
            isNot =
                context.source.slice(relationToken.start, relationToken.end) !== 'in';
            return new InOp(line, column, start, end, raw, left, right, isNot);
        }
    }
    throw new Error("unable to find RELATION token between operands");
}