Basic mixin functionality. Still need to properly implement environment lookup…

Basic mixin functionality. Still need to properly implement environment lookup and correct indentation.

document_evaluator.cpp

@@ -35,8 +35,15 @@ namespace Sass {
           }
         } break;
         
+        case Node::mixin: {
+          context.environment[n[0].token] = n;
+        } break;
+        
         case Node::expansion: {
-          
+          Node body(context.environment[n[0].token][2].clone());
+          n.children->pop_back();
+          n.children->pop_back();
+          n += body;
         } break;
       }
     }

node.cpp

@@ -213,10 +213,10 @@ namespace Sass {
         return result;
       } break;
       
-      case expansion: {
-        string result("MIXIN CALL: ");
-        return result;
-      } break;
+      // case expansion: {
+      //   string result("MIXIN CALL: ");
+      //   return result;
+      // } break;
 
       default: {
         return string(token);
@@ -326,7 +326,7 @@ namespace Sass {
             block[i].emit_nested_css(buf, depth+1); // NEED OVERLOADED VERSION FOR COMMENTS AND RULES
           }
           else if (stm_type == expansion) {
-            buf << endl << string(2*(depth+1), ' ') << block[i].to_string(""); // TEMPORARY
+            // buf << string(2*(depth+1), ' ') << block[i].to_string(""); // TEMPORARY
             for (int j = 0; j < block[i].size(); ++j) {
               block[i][j].emit_nested_css(buf, depth+1);
             }