1 files changed, 53 insertions, 0 deletions
diff --git a/src/sksl/ir/SkSLAppendStage.h b/src/sksl/ir/SkSLAppendStage.h
new file mode 100644
index 0000000000..87a8210a83
--- /dev/null
+++ b/src/sksl/ir/SkSLAppendStage.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SKSL_APPENDSTAGE
+#define SKSL_APPENDSTAGE
+
+#ifndef SKSL_STANDALONE
+
+#include "SkRasterPipeline.h"
+#include "SkSLContext.h"
+#include "SkSLExpression.h"
+
+namespace SkSL {
+
+struct AppendStage : public Expression {
+    AppendStage(const Context& context, int offset, SkRasterPipeline::StockStage stage,
+                std::vector<std::unique_ptr<Expression>> arguments)
+    : INHERITED(offset, kAppendStage_Kind, *context.fVoid_Type)
+    , fStage(stage)
+    , fArguments(std::move(arguments)) {}
+
+    String description() const {
+        String result = "append(";
+        const char* separator = "";
+        for (const auto& a : fArguments) {
+            result += separator;
+            result += a->description();
+            separator = ", ";
+        }
+        result += ")";
+        return result;
+    }
+
+    bool hasSideEffects() const {
+        return true;
+    }
+
+    SkRasterPipeline::StockStage fStage;
+
+    std::vector<std::unique_ptr<Expression>> fArguments;
+
+    typedef Expression INHERITED;
+};
+
+} // namespace
+
+#endif // SKSL_STANDALONE
+
+#endif // SKSL_APPENDSTAGE