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

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

@@ -0,0 +1,53 @@
+var utils = require('../utils')
+  , nodes = require('../nodes');
+
+/**
+ * Convert the given `color` to an `HSLA` node,
+ * or h,s,l,a component values.
+ *
+ * Examples:
+ *
+ *    hsla(10deg, 50%, 30%, 0.5)
+ *    // => HSLA
+ *
+ *    hsla(#ffcc00)
+ *    // => HSLA
+ *
+ * @param {RGBA|HSLA|Unit} hue
+ * @param {Unit} saturation
+ * @param {Unit} lightness
+ * @param {Unit} alpha
+ * @return {HSLA}
+ * @api public
+ */
+
+module.exports = function hsla(hue, saturation, lightness, alpha){
+  switch (arguments.length) {
+    case 1:
+      utils.assertColor(hue);
+      return hue.hsla;
+    case 2:
+      utils.assertColor(hue);
+      var color = hue.hsla;
+      utils.assertType(saturation, 'unit', 'alpha');
+      var alpha = saturation.clone();
+      if ('%' == alpha.type) alpha.val /= 100;
+      return new nodes.HSLA(
+          color.h
+        , color.s
+        , color.l
+        , alpha.val);
+    default:
+      utils.assertType(hue, 'unit', 'hue');
+      utils.assertType(saturation, 'unit', 'saturation');
+      utils.assertType(lightness, 'unit', 'lightness');
+      utils.assertType(alpha, 'unit', 'alpha');
+      var alpha = alpha.clone();
+      if (alpha && '%' == alpha.type) alpha.val /= 100;
+      return new nodes.HSLA(
+          hue.val
+        , saturation.val
+        , lightness.val
+        , alpha.val);
+  }
+};