Function processLabels

lib/processor.js:299–323

* Process a list of labels that are contained within the given `BlockStatement`. * * @param {Object} ast The `BlockStatement` that contains the labels. * @param {Object} parent The `FunctionExpression` or `FunctionDeclaration` that contains the label. * @param {Object} labels The

(ast, parent, labels, options)

 * @return {Object}           The processed AST.
 */
function processLabels(ast, parent, labels, options) {
    OBLIGATIONS.precondition(ast && typeof ast === 'object');
    OBLIGATIONS.precondition(ast.type === 'BlockStatement');
    OBLIGATIONS.precondition(labels && typeof labels === 'object');
    OBLIGATIONS.precondition(parent && typeof parent === 'object');
    OBLIGATIONS.precondition(parent.type === 'FunctionDeclaration' || parent.type === 'FunctionExpression');
    OBLIGATIONS.precondition(options && typeof options === 'object');
    OBLIGATIONS.precondition(typeof options.supported === 'object');
    var __result;
    var keys = Object.keys(labels), total = keys.length, key, index, label, i;
    for (i = 0; i < total; i++) {
        key = keys[i];
        label = labels[key];
        index = ast.body.indexOf(label);
        if (~index) {
            ast.body.splice.apply(ast.body, [
                index,
                1
            ].concat(processLabel(label, labels, parent, options)));
        }
    }
    __result = ast;
    OBLIGATIONS.postcondition(__result && typeof __result === 'object');
    return __result;
}
/**
 * Process a magic label.
 *