Rename NoSuchMethodException to NoSuchMethodError.

lib/core/errors.dart

Index: lib/core/errors.dart
diff --git a/lib/core/errors.dart b/lib/core/errors.dart
index 6890f050077e0d12d478d7fd08e8e5280ec0c01a..357a930c5e5a2b58e363ac7712b7457a5009f27c 100644
--- a/lib/core/errors.dart
+++ b/lib/core/errors.dart
@@ -22,3 +22,61 @@ class FallThroughError implements Error {
 
 class AbstractClassInstantiationError {
 }
+
+/**
+ * Error thrown by the default implementation of [:noSuchMethod:] on [Object].
+ */
+class NoSuchMethodError implements Error {
+  final Object _receiver;
+  final String _functionName;
+  final List _arguments;
+  final List _existingArgumentNames;
+
+  /**
+   * Create a [NoSuchMethodError] corresponding to a failed method call.
+   *
+   * The first parameter is the receiver of the method call.
+   * The second parameter is the name of the called method.
+   * The third parameter is the positional arguments that the method was
+   * called with.
+   * The optional [exisitingArgumentNames] is the expected parameters of a
+   * method with the same name on the receiver, if available. This is
+   * the method that would have been called if the parameters had matched.
+   *
+   * TODO(lrn): This will be rewritten to use mirrors when they are available.
+   */
+  const NoSuchMethodError(Object this._receiver,
+                          String this._functionName,
+                          List this._arguments,
+                          [List existingArgumentNames = null])
+      : this._existingArgumentNames = existingArgumentNames;
+
+  String toString() {
+    StringBuffer sb = new StringBuffer();
+    for (int i = 0; i < _arguments.length; i++) {
+      if (i > 0) {
+        sb.add(", ");
+      }
+      sb.add(_arguments[i]);
+    }
+    if (_existingArgumentNames === null) {
+      return "NoSuchMethodError : method not found: '$_functionName'\n"
+          "Receiver: $_receiver\n"
+          "Arguments: [$sb]";
+    } else {
+      String actualParameters = sb.toString();
+      sb = new StringBuffer();
+      for (int i = 0; i < _existingArgumentNames.length; i++) {
+        if (i > 0) {
+          sb.add(", ");
+        }
+        sb.add(_existingArgumentNames[i]);
+      }
+      String formalParameters = sb.toString();
+      return "NoSuchMethodError: incorrect number of arguments passed to "
+          "method named '$_functionName'\nReceiver: $_receiver\n"
+          "Tried calling: $_functionName($actualParameters)\n"
+          "Found: $_functionName($formalParameters)";
+    }
+  }
+}