function runTokens()

in ext/syntaxhighlighter/scripts/XRegExp.js [507:534]

• 28 lines of code
• 9 McCabe index (conditional complexity)

    function runTokens (pattern, index, scope, context) {
        var i = tokens.length,
            result, match, t;
        // Protect against constructing XRegExps within token handler and trigger functions
        isInsideConstructor = true;
        // Must reset `isInsideConstructor`, even if a `trigger` or `handler` throws
        try {
            while (i--) { // Run in reverse order
                t = tokens[i];
                if ((scope & t.scope) && (!t.trigger || t.trigger.call(context))) {
                    t.pattern.lastIndex = index;
                    match = t.pattern.exec(pattern); // Running the altered `exec` here allows use of named backreferences, etc.
                    if (match && match.index === index) {
                        result = {
                            output: t.handler.call(context, match, scope),
                            match: match
                        };
                        break;
                    }
                }
            }
        } catch (err) {
            throw err;
        } finally {
            isInsideConstructor = false;
        }
        return result;
    };