complete redesign: use nodejs on server instead of php - documentation to be updated

nodejs/node_modules/stylus/lib/functions/range.js

@@ -0,0 +1,32 @@
+var utils = require('../utils')
+  , nodes = require('../nodes');
+
+/**
+ * Returns a list of units from `start` to `stop`
+ * by `step`. If `step` argument is omitted,
+ * it defaults to 1.
+ *
+ * @param {Unit} start
+ * @param {Unit} stop
+ * @param {Unit} [step]
+ * @return {Expression}
+ * @api public
+ */
+
+module.exports = function range(start, stop, step){
+  utils.assertType(start, 'unit', 'start');
+  utils.assertType(stop, 'unit', 'stop');
+  if (step) {
+    utils.assertType(step, 'unit', 'step');
+    if (0 == step.val) {
+      throw new Error('ArgumentError: "step" argument must not be zero');
+    }
+  } else {
+    step = new nodes.Unit(1);
+  }
+  var list = new nodes.Expression;
+  for (var i = start.val; i <= stop.val; i += step.val) {
+    list.push(new nodes.Unit(i, start.type));
+  }
+  return list;
+};