C-style assert() function for sweet.js, which include the assertion code in the Error object (as opposed to the calculated result). Similar to: https://github.com/visionmedia/better-assert

sweet_assert.js

macro assert {
  rule {($test ...)} => {
    if (!($test ...)) {
      throw new Error('AssertionError: ' + #{ $test ... });
    }
  }
}

var foo = 100;

assert(100 == foo);
// passes

assert(99 == foo);
// fails!
// Error: AssertionError: 99 == foo
//     at blah.js:1:1
//     at ...

Does not work with SweetJS v.0.7.1.

You'd want this to be a case macro and have some code to string macro.

One important use of assertions in C, is that the assertions go away once compiled. Can this be done using sweet?