chore: import upstream snapshot with attribution

paddle/ap/include/code_gen/kernel_arg_id.h

@@ -0,0 +1,75 @@
+// Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
+//
+// 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.
+
+#pragma once
+
+#include "paddle/ap/include/adt/adt.h"
+#include "paddle/ap/include/code_gen/dim_expr_kernel_arg_id.h"
+#include "paddle/ap/include/code_gen/in_tensor_data_ptr_kernel_arg_id.h"
+#include "paddle/ap/include/code_gen/out_tensor_data_ptr_kernel_arg_id.h"
+
+namespace ap::code_gen {
+
+template <typename BirNode>
+using KernelArgIdImpl = std::variant<DimExprKernelArgId<BirNode>,
+                                     InTensorDataPtrKernelArgId<BirNode>,
+                                     OutTensorDataPtrKernelArgId<BirNode>>;
+
+template <typename BirNode>
+struct KernelArgId : public KernelArgIdImpl<BirNode> {
+  using KernelArgIdImpl<BirNode>::KernelArgIdImpl;
+
+  ADT_DEFINE_VARIANT_METHODS(KernelArgIdImpl<BirNode>);
+
+  template <typename ValueT>
+  ValueT CastTo() const {
+    return Match([](const auto& impl) -> ValueT { return impl; });
+  }
+
+  template <typename ValueT>
+  static adt::Result<KernelArgId> CastFrom(const ValueT& val) {
+    using RetT = adt::Result<KernelArgId>;
+    return val.Match(
+        [](const DimExprKernelArgId<BirNode>& impl) -> RetT { return impl; },
+        [](const InTensorDataPtrKernelArgId<BirNode>& impl) -> RetT {
+          return impl;
+        },
+        [](const OutTensorDataPtrKernelArgId<BirNode>& impl) -> RetT {
+          return impl;
+        },
+        [](const auto& impl) -> RetT {
+          return adt::errors::TypeError{"KernelArgId::CastFrom() failed."};
+        });
+  }
+
+  std::size_t GetHashValue() const {
+    std::size_t hash_value = Match(
+        [&](const auto& impl) -> std::size_t { return impl->GetHashValue(); });
+    return adt::hash_combine(this->index(), hash_value);
+  }
+};
+
+}  // namespace ap::code_gen
+
+namespace std {
+
+template <typename BirNode>
+struct hash<ap::code_gen::KernelArgId<BirNode>> {
+  std::size_t operator()(
+      const ap::code_gen::KernelArgId<BirNode>& arg_id) const {
+    return arg_id.GetHashValue();
+  }
+};
+
+}  // namespace std