Implement more of dart:mirrors

lib/runtime/_types.js

Index: lib/runtime/_types.js
diff --git a/lib/runtime/_types.js b/lib/runtime/_types.js
index af5e2d04d24fce2fe1fdf0f7c351b3816aaed66a..482adf4fa1c714f73f63168c77b1fc3052d142ec 100644
--- a/lib/runtime/_types.js
+++ b/lib/runtime/_types.js
@@ -139,6 +139,26 @@ dart_library.library('dart_runtime/_types', null, /* Imports */[
       this.args = args;
       this.optionals = optionals;
       this.named = named;
+
+      // TODO(vsm): This is just parameter metadata for now.
+      this.metadata = [];
+      function process(array, metadata) {
+        var result = [];
+        for (var i = 0; i < array.length; ++i) {
+          var arg = array[i];
+          if (arg instanceof Array) {
+            metadata.push(arg.slice(1));
+            result.push(arg[0]);
+          } else {
+            metadata.push([]);
+            result.push(arg);
+          }
+        }
+        return result;
+      }
+      this.args = process(this.args, this.metadata);
+      this.optionals = process(this.optionals, this.metadata);
+      // TODO(vsm): Add named arguments.
       this._canonize();
     }
     _canonize() {
@@ -202,6 +222,10 @@ dart_library.library('dart_runtime/_types', null, /* Imports */[
     get named() {
       return this.functionType.named;
     }
+
+    get metadata() {
+      return this.functionType.metadata;
+    }
   }
 
   function _functionType(definite, returnType, args, extra) {