1 files changed, 55 insertions, 0 deletions
diff --git a/gfx/skia/skia/src/sksl/ir/SkSLConstructorCompound.h b/gfx/skia/skia/src/sksl/ir/SkSLConstructorCompound.h
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index 0000000000..5dfd93f63c
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+++ b/gfx/skia/skia/src/sksl/ir/SkSLConstructorCompound.h
@@ -0,0 +1,55 @@
+/*
+ * 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_CONSTRUCTOR_COMPOUND
+#define SKSL_CONSTRUCTOR_COMPOUND
+
+#include "include/private/SkSLDefines.h"
+#include "include/private/SkSLIRNode.h"
+#include "include/sksl/SkSLPosition.h"
+#include "src/sksl/ir/SkSLConstructor.h"
+#include "src/sksl/ir/SkSLExpression.h"
+
+#include <memory>
+#include <utility>
+
+namespace SkSL {
+
+class Context;
+class Type;
+
+/**
+ * Represents a vector or matrix that is composed from other expressions, such as
+ * `half3(pos.xy, 1)` or `mat3(a.xyz, b.xyz, 0, 0, 1)`
+ *
+ * These can contain a mix of scalars and aggregates. The total number of scalar values inside the
+ * constructor must always match the type's slot count. (e.g. `pos.xy` consumes two slots.)
+ * The inner values must have the same component type as the vector/matrix.
+ */
+class ConstructorCompound final : public MultiArgumentConstructor {
+public:
+    inline static constexpr Kind kIRNodeKind = Kind::kConstructorCompound;
+
+    ConstructorCompound(Position pos, const Type& type, ExpressionArray args)
+            : INHERITED(pos, kIRNodeKind, &type, std::move(args)) {}
+
+    static std::unique_ptr<Expression> Make(const Context& context,
+                                            Position pos,
+                                            const Type& type,
+                                            ExpressionArray args);
+
+    std::unique_ptr<Expression> clone(Position pos) const override {
+        return std::make_unique<ConstructorCompound>(pos, this->type(), this->arguments().clone());
+    }
+
+private:
+    using INHERITED = MultiArgumentConstructor;
+};
+
+}  // namespace SkSL
+
+#endif