Add a limited version of ParameterMirrors that can only tell whether they are

lib/mirrors/mirrors.dart

Index: lib/mirrors/mirrors.dart
===================================================================
--- lib/mirrors/mirrors.dart	(revision 9669)
+++ lib/mirrors/mirrors.dart	(working copy)
@@ -355,11 +355,40 @@
    * Does this mirror reflect a factory constructor?
    */
   bool isFactoryConstructor;
+
+  /**
+   * Returns the list of parameters for this method.
+   */
+  List<ParameterMirror> parameters();
 }
 
+/**
+ * A [ParameterMirror] reflects a Dart formal parameter declaration.
+ */
+interface ParameterMirror extends VariableMirror {

[rmacnak, 2012/07/16 17:36:39]

The members of this interface, copied from the "Reflection in Dart" doc, are all
methods. Perhaps they should be getters, as they should all be quick and
side-effect free?

[turnidge, 2012/07/16 18:30:26]

You should probably do whatever *feels* consistent with the rest of this file
(mirrors.dart) as it current stands.  We can go through and mass-change them
later.

[rmacnak, 2012/07/16 22:00:40]

Okay. I decided to go with getters since its superclass VariableMirror uses
getters.

On 2012/07/16 18:30:26, turnidge wrote:

+  /**
+   * Returns the type of this parameter.
+   */
+  TypeMirror type();
 
+  /**
+   * Returns the default value for this parameter.
+   */
+  String defaultValue();
+
+  /**
+   * Returns true if this parameter has a default value.
+   */
+  bool hasDefaultValue();
+
+  /**
+   * Returns true if this parameter is optional.
+   */
+  bool isOptional();
+}
+
 /**
- * A [VariableMirror] reflects a Dart language variable.
+ * A [VariableMirror] reflects a Dart language variable declaration.
  */
 interface VariableMirror {
   /**