Put each array declarator into a separate declaration in HLSL output

Since HLSL doesn't support arrays as l-values, HLSL output needs to split
declarators that initialize arrays to variable declaration and assignment
implemented via a function call. To prepare for this, it is necessary that each
declarator has its own declaration.

BUG=angleproject:941
TEST=angle_end2end_tests, WebGL conformance tests

Change-Id: I43dee487578561c01dbde90c2f55a93dda2f057a
Reviewed-on: https://chromium-review.googlesource.com/266001
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Tested-by: Olli Etuaho <oetuaho@nvidia.com>
diff --git a/src/compiler/translator/SeparateDeclarations.h b/src/compiler/translator/SeparateDeclarations.h
new file mode 100644
index 0000000..2aa5294
--- /dev/null
+++ b/src/compiler/translator/SeparateDeclarations.h
@@ -0,0 +1,22 @@
+//
+// Copyright (c) 2002-2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// The SeparateArrayDeclarations function processes declarations that contain array declarators. Each declarator in
+// such declarations gets its own declaration.
+// This is useful as an intermediate step when initialization needs to be separated from declaration.
+// Example:
+//     int a[1] = int[1](1), b[1] = int[1](2);
+// gets transformed when run through this class into the AST equivalent of:
+//     int a[1] = int[1](1);
+//     int b[1] = int[1](2);
+
+#ifndef COMPILER_TRANSLATOR_SEPARATEDECLARATIONS_H_
+#define COMPILER_TRANSLATOR_SEPARATEDECLARATIONS_H_
+
+class TIntermNode;
+
+void SeparateArrayDeclarations(TIntermNode *root);
+
+#endif  // COMPILER_TRANSLATOR_SEPARATEDECLARATIONS_H_