parse.js

AngularJS 1.x parser, ported as a standalone library

Installation

bower install --save parse.js

Usage

To create a parser you will need of two classes, Lexer and Parser, you will implement a Lexer instance in the Parser one. See the usage example bellow to more information:

var filters = {
    json: function (input) {
        return JSON.stringify(input);
    }
};
function MyFilterService(filterName) {
    return filters[filterName];
}

var parseOptions = {
    csp: true // content security policy mode
};
var lexer = new Lexer();
var parser = new Parser(lexer, MyFilterService, parseOptions);
var value = parser.parse('x + y * z')({
    x: 10,
    y: 4,
    z: 8
});
// value === 42

The parseOptions or MyFilterService param is not mandatory. The MyFilterService is similar to AngularJS filters, you can compile any expression with a filter, just like we do in AngularJS:

myVar | myFilterName

If exists, it will execute the param passed (in our example case MyFilterService) with the filterName in the first param of the call, so you can do whatever you please with it. In case that we do not have any filter service defined, it will use a default function which just return the input.