diff -r 000000000000 -r 6474c204b198 rdf/base/idl/nsIRDFLiteral.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rdf/base/idl/nsIRDFLiteral.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsIRDFNode.idl"
+
+%{C++
+#include "nscore.h" // for char16_t
+%}
+
+[ptr] native const_octet_ptr(const uint8_t);
+
+/**
+ * A literal node in the graph, whose value is a string.
+ */
+[scriptable, uuid(E0C493D2-9542-11d2-8EB8-00805F29F370)]
+interface nsIRDFLiteral : nsIRDFNode {
+    /**
+     * The Unicode string value of the literal.
+     */
+    readonly attribute wstring Value;
+
+    /**
+     * An unscriptable version used to avoid a string copy. Meant
+     * for use as a performance optimization.
+     */
+    [noscript] void GetValueConst([shared] out wstring aConstValue);
+};
+
+/**
+ * A literal node in the graph, whose value is a date
+ */
+[scriptable, uuid(E13A24E1-C77A-11d2-80BE-006097B76B8E)]
+interface nsIRDFDate : nsIRDFNode {
+    /**
+     * The date value of the literal
+     */
+    readonly attribute PRTime Value;
+};
+
+/**
+ * A literal node in the graph, whose value is an integer
+ */
+[scriptable, uuid(E13A24E3-C77A-11d2-80BE-006097B76B8E)]
+interface nsIRDFInt : nsIRDFNode {
+    /**
+     * The integer value of the literal
+     */
+    readonly attribute long Value;
+};
+
+/**
+ * A literal node in the graph, whose value is arbitrary
+ * binary data.
+ */
+[scriptable, uuid(237f85a2-1dd2-11b2-94af-8122582fc45e)]
+interface nsIRDFBlob : nsIRDFNode {
+    /**
+     * The binary data.
+     */
+    [noscript] readonly attribute const_octet_ptr value;
+
+    /**
+     * The data's length.
+     */
+    readonly attribute long length;
+};