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

nodejs/node_modules/stylus/lib/functions/opposite-position.js

@@ -0,0 +1,32 @@
+var utils = require('../utils')
+  , nodes = require('../nodes');
+
+/**
+ * Return the opposites of the given `positions`.
+ *
+ * Examples:
+ *
+ *    opposite-position(top left)
+ *    // => bottom right
+ *
+ * @param {Expression} positions
+ * @return {Expression}
+ * @api public
+ */
+
+(module.exports = function oppositePosition(positions){
+  var expr = [];
+  utils.unwrap(positions).nodes.forEach(function(pos, i){
+    utils.assertString(pos, 'position ' + i);
+    pos = (function(){ switch (pos.string) {
+      case 'top': return 'bottom';
+      case 'bottom': return 'top';
+      case 'left': return 'right';
+      case 'right': return 'left';
+      case 'center': return 'center';
+      default: throw new Error('invalid position ' + pos);
+    }})();
+    expr.push(new nodes.Literal(pos));
+  });
+  return expr;
+}).raw = true;