function rankMatch()

in 1.10/apidocs/search.js [187:228]

• 37 lines of code
• 21 McCabe index (conditional complexity)

function rankMatch(match, category) {
    if (!match) {
        return NO_MATCH;
    }
    var index = match.index;
    var input = match.input;
    var leftBoundaryMatch = 2;
    var periferalMatch = 0;
    // make sure match is anchored on a left word boundary
    if (index === 0 || /\W/.test(input[index - 1]) || "_" === input[index]) {
        leftBoundaryMatch = 0;
    } else if ("_" === input[index - 1] || (input[index] === input[index].toUpperCase() && !/^[A-Z0-9_$]+$/.test(input))) {
        leftBoundaryMatch = 1;
    }
    var matchEnd = index + match[0].length;
    var leftParen = input.indexOf("(");
    var endOfName = leftParen > -1 ? leftParen : input.length;
    // exclude peripheral matches
    if (category !== catModules && category !== catSearchTags) {
        var delim = category === catPackages ? "/" : ".";
        if (leftParen > -1 && leftParen < index) {
            periferalMatch += 2;
        } else if (input.lastIndexOf(delim, endOfName) >= matchEnd) {
            periferalMatch += 2;
        }
    }
    var delta = match[0].length === endOfName ? 0 : 1; // rank full match higher than partial match
    for (var i = 1; i < match.length; i++) {
        // lower ranking if parts of the name are missing
        if (match[i])
            delta += match[i].length;
    }
    if (category === catTypes) {
        // lower ranking if a type name contains unmatched camel-case parts
        if (/[A-Z]/.test(input.substring(matchEnd)))
            delta += 5;
        if (/[A-Z]/.test(input.substring(0, index)))
            delta += 5;
    }
    return leftBoundaryMatch + periferalMatch + (delta / 200);

}