Java API for mojo system.

mojo/public/java/src/org/chromium/mojo/system/MojoResult.java

Index: mojo/public/java/src/org/chromium/mojo/system/MojoResult.java
diff --git a/mojo/public/java/src/org/chromium/mojo/system/MojoResult.java b/mojo/public/java/src/org/chromium/mojo/system/MojoResult.java
new file mode 100644
index 0000000000000000000000000000000000000000..9d1a8550c714aa233a0f0b27dcc15c78713fcd4c
--- /dev/null
+++ b/mojo/public/java/src/org/chromium/mojo/system/MojoResult.java
@@ -0,0 +1,66 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.mojo.system;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public enum MojoResult {

[bulach, 2014/04/14 17:39:56]

enums are a no-go in java.. :(

[qsr, 2014/04/15 08:37:37]

 Not sure to understand. We are still supporting java4? Why?

 Also, in chromium/src

$ git grep '\(\(public\)\|\(private\)\) enum' -- \*.java | wc -l
17

+    OK(0),
+    CANCELLED(-1),
+    UNKNOWN(-2),
+    INVALID_ARGUMENT(-3),
+    DEADLINE_EXCEEDED(-4),
+    NOT_FOUND(-5),
+    ALREADY_EXISTS(-6),
+    PERMISSION_DENIED(-7),
+    RESOURCE_EXHAUSTED(-8),
+    FAILED_PRECONDITION(-9),
+    ABORTED(-10),
+    OUT_OF_RANGE(-11),
+    UNIMPLEMENTED(-12),
+    INTERNAL(-13),
+    UNAVAILABLE(-14),
+    DATA_LOSS(-15),
+    BUSY(-16),
+    SHOULD_WAIT(-17);
+
+    private static final Map<Integer, MojoResult> sMojoResultByCode =
+            new HashMap<Integer, MojoResult>();
+
+    static {
+        for (MojoResult mr : MojoResult.values()) {
+            MojoResult.sMojoResultByCode.put(mr.getCode(), mr);
+        }
+    }
+
+    private int mCode;
+
+    private MojoResult(int code) {
+        mCode = code;
+    }
+
+    public int getCode() {
+        return mCode;
+    }
+
+    /**
+     * TODO(qsr):
+     *
+     * @param code
+     * @return TODO(qsr)
+     */
+    public static MojoResult forCode(int code) {
+        // All positive codes are success.
+        if (code >= 0) {
+            return OK;
+        }
+        if (sMojoResultByCode.containsKey(code)) {
+            return sMojoResultByCode.get(code);
+        }
+        // Handle new result as unknown.
+        return UNKNOWN;
+    }
+}