DartC User Warning Framework

compiler/java/com/google/dart/compiler/ErrorSeverity.java

Index: compiler/java/com/google/dart/compiler/ErrorSeverity.java
diff --git a/compiler/java/com/google/dart/compiler/ErrorSeverity.java b/compiler/java/com/google/dart/compiler/ErrorSeverity.java
new file mode 100644
index 0000000000000000000000000000000000000000..2c486893ef390b5d820639a7fe569bc6436206f1
--- /dev/null
+++ b/compiler/java/com/google/dart/compiler/ErrorSeverity.java
@@ -0,0 +1,24 @@
+package com.google.dart.compiler;
+
+/**
+ * The severity of {@link ErrorCode}.
+ */
+public enum ErrorSeverity {
+  /**
+   * Fatal error.
+   */
+  ERROR("E"),
+  /**
+   * Warning, may become error with -Werror command line flag.
+   */
+  WARNING("W");
+  final String name;
+
+  ErrorSeverity(String name) {
+    this.name = name;
+  }
+
+  public String getName() {
+    return name;
+  }
+}