initial checkin of SkSL compiler
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1984363002
CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Release-CMake-Trybot,Build-Mac-Clang-x86_64-Release-CMake-Trybot
Review-Url: https://codereview.chromium.org/1984363002
diff --git a/src/sksl/ir/SkSLBoolLiteral.h b/src/sksl/ir/SkSLBoolLiteral.h
new file mode 100644
index 0000000..3c40e59
--- /dev/null
+++ b/src/sksl/ir/SkSLBoolLiteral.h
@@ -0,0 +1,38 @@
+/*
+ * 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_BOOLLITERAL
+#define SKSL_BOOLLITERAL
+
+#include "SkSLExpression.h"
+
+namespace SkSL {
+
+/**
+ * Represents 'true' or 'false'.
+ */
+struct BoolLiteral : public Expression {
+ BoolLiteral(Position position, bool value)
+ : INHERITED(position, kBoolLiteral_Kind, kBool_Type)
+ , fValue(value) {}
+
+ std::string description() const override {
+ return fValue ? "true" : "false";
+ }
+
+ bool isConstant() const override {
+ return true;
+ }
+
+ const bool fValue;
+
+ typedef Expression INHERITED;
+};
+
+} // namespace
+
+#endif