falcor-router/src/parse-tree/actionWrapper.js

A router DataSource constructor for falcor that allows you to model all your cloud data sources as a single JSON resource.

var convertPathToRoute = require('./convertPathToRoute');
var isPathValue = require('./../support/isPathValue');
var slice = require('./../support/slice');
var isArray = Array.isArray;

/**
 *   Creates the named variables and coerces it into its
 * virtual type.
 *
 * @param {Array} route - The route that produced this action wrapper
 * @private
 */
function createNamedVariables(route, action) {
    return function innerCreateNamedVariables(matchedPath) {
        var convertedArguments;
        var len = -1;
        var restOfArgs = slice(arguments, 1);
        var isJSONObject = !isArray(matchedPath);

        // A set uses a json object
        if (isJSONObject) {
            restOfArgs = [];
            convertedArguments = matchedPath;
        }

        // Could be an array of pathValues for a set operation.
        else if (isPathValue(matchedPath[0])) {
            convertedArguments = [];

            matchedPath.forEach(function(pV) {
                pV.path = convertPathToRoute(pV.path, route);
                convertedArguments[++len] = pV;
            });
        }

        // else just convert and assign
        else {
            convertedArguments =
                convertPathToRoute(matchedPath, route);
        }
        return action.apply(this, [convertedArguments].concat(restOfArgs));
    };
}
module.exports = createNamedVariables;