initial checkin of SkSL compiler

src/sksl/ir/SkSLDiscardStatement.h

Index: src/sksl/ir/SkSLDiscardStatement.h
diff --git a/src/sksl/ir/SkSLDiscardStatement.h b/src/sksl/ir/SkSLDiscardStatement.h
new file mode 100644
index 0000000000000000000000000000000000000000..b39712ebd11a46aaaac9505667c45d9eb1e8fb1b
--- /dev/null
+++ b/src/sksl/ir/SkSLDiscardStatement.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+ 
+#ifndef SKSL_DISCARDSTATEMENT
+#define SKSL_DISCARDSTATEMENT
+
+#include "SkSLExpression.h"
+#include "SkSLStatement.h"
+
+namespace SkSL {
+
+/**
+ * A 'discard' statement. 
+ */
+struct DiscardStatement : public Statement {
+    DiscardStatement(Position position)
+    : INHERITED(position, kDiscard_Kind) {}
+
+    std::string description() const override {
+        return "discard;";
+    }
+
+    typedef Statement INHERITED;
+};
+
+} // namespace
+
+#endif