decaffeinate-parser/dist/util/rangeOfBracketTokensForIndexNode.mjs

A better AST for CoffeeScript, inspired by CoffeeScriptRedux.

import { SourceType } from 'coffee-lex';
import { inspect } from 'util';
export default function rangeOfBracketTokensForIndexNode(context, indexNode) {
    var start = context.linesAndColumns.indexForLocation({
        line: indexNode.locationData.first_line,
        column: indexNode.locationData.first_column
    });
    if (start !== null) {
        var startTokenIndex = context.sourceTokens.indexOfTokenStartingAtSourceIndex(start);
        if (startTokenIndex !== null) {
            var range = context.sourceTokens.rangeOfMatchingTokensContainingTokenIndex(SourceType.LBRACKET, SourceType.RBRACKET, startTokenIndex);
            if (range !== null) {
                return range;
            }
        }
    }
    throw new Error("cannot find braces surrounding index at " +
        (indexNode.locationData.first_line + 1 + ":" + indexNode.locationData.first_column + ": ") +
        ("" + inspect(indexNode)));
}