Add semantic::MemberAccessorExpression, use it.
Pull the mutable 'is_swizzled' semantic field from ast::MemberAccessorExpression and into a new semantic::MemberAccessorExpression node.
Have the TypeDeterminer create these semantic::MemberAccessorExpression nodes.
Bug: tint:390
Change-Id: I8fc6e36dabb417190528536a94d027af54059222
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/40142
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
diff --git a/src/semantic/member_accessor_expression.h b/src/semantic/member_accessor_expression.h
new file mode 100644
index 0000000..7b21f97
--- /dev/null
+++ b/src/semantic/member_accessor_expression.h
@@ -0,0 +1,43 @@
+// Copyright 2021 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef SRC_SEMANTIC_MEMBER_ACCESSOR_EXPRESSION_H_
+#define SRC_SEMANTIC_MEMBER_ACCESSOR_EXPRESSION_H_
+
+#include "src/semantic/expression.h"
+
+namespace tint {
+namespace semantic {
+
+/// MemberAccessorExpression holds the semantic information for a
+/// ast::MemberAccessorExpression node.
+class MemberAccessorExpression
+ : public Castable<MemberAccessorExpression, Expression> {
+ public:
+ /// Constructor
+ /// @param type the resolved type of the expression
+ /// @param is_swizzle true if this member access is for a vector swizzle
+ MemberAccessorExpression(type::Type* type, bool is_swizzle);
+
+ /// @return true if this member access is for a vector swizzle
+ bool IsSwizzle() const { return is_swizzle_; }
+
+ private:
+ bool const is_swizzle_;
+};
+
+} // namespace semantic
+} // namespace tint
+
+#endif // SRC_SEMANTIC_MEMBER_ACCESSOR_EXPRESSION_H_
