1 files changed, 62 insertions, 0 deletions
diff --git a/gfx/skia/skia/include/sksl/DSLCase.h b/gfx/skia/skia/include/sksl/DSLCase.h
new file mode 100644
index 0000000000..06e7225f11
--- /dev/null
+++ b/gfx/skia/skia/include/sksl/DSLCase.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2021 Google LLC.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SKSL_DSL_CASE
+#define SKSL_DSL_CASE
+
+#include "include/private/SkSLDefines.h"
+#include "include/private/base/SkTArray.h"
+#include "include/sksl/DSLExpression.h"
+#include "include/sksl/DSLStatement.h"
+#include "include/sksl/SkSLPosition.h"
+
+#include <utility>
+
+namespace SkSL {
+
+namespace dsl {
+
+class DSLCase {
+public:
+    // An empty expression means 'default:'.
+    template<class... Statements>
+    DSLCase(DSLExpression value, Statements... statements)
+        : fValue(std::move(value)) {
+        fStatements.reserve_back(sizeof...(statements));
+        ((void)fStatements.push_back(DSLStatement(std::move(statements)).release()), ...);
+    }
+
+    DSLCase(DSLExpression value, SkTArray<DSLStatement> statements,
+            Position pos = {});
+
+    DSLCase(DSLExpression value, SkSL::StatementArray statements,
+            Position pos = {});
+
+    DSLCase(DSLCase&&);
+
+    ~DSLCase();
+
+    DSLCase& operator=(DSLCase&&);
+
+    void append(DSLStatement stmt);
+
+private:
+    DSLExpression fValue;
+    SkSL::StatementArray fStatements;
+    Position fPosition;
+
+    friend class DSLCore;
+
+    template<class... Cases>
+    friend DSLStatement Switch(DSLExpression value, Cases... cases);
+};
+
+} // namespace dsl
+
+} // namespace SkSL
+
+#endif