chore: import upstream snapshot with attribution

paddle/ap/include/axpr/pointer_value_method_class.h

@@ -0,0 +1,104 @@
+// 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/axpr/constants.h"
+#include "paddle/ap/include/axpr/method_class.h"
+#include "paddle/ap/include/axpr/pointer_value.h"
+
+namespace ap::axpr {
+
+template <typename ValueT>
+struct PointerValueMethodClass {
+  using This = PointerValueMethodClass;
+  using Self = PointerValue;
+
+  adt::Result<ValueT> ToString(const Self& self) {
+    return self.Match([](const auto* impl) -> std::string {
+      std::ostringstream ss;
+      ss << impl;
+      return ss.str();
+    });
+  }
+
+  adt::Result<ValueT> Hash(const Self& self) {
+    return self.Match([](const auto* impl) -> int64_t {
+      return reinterpret_cast<int64_t>(impl);
+    });
+  }
+
+  template <typename BuiltinUnarySymbol>
+  static BuiltinUnaryFunc<ValueT> GetBuiltinUnaryFunc() {
+    return adt::Nothing{};
+  }
+
+  template <typename BuiltinBinarySymbol>
+  static BuiltinBinaryFunc<ValueT> GetBuiltinBinaryFunc() {
+    if constexpr (std::is_same_v<BuiltinBinarySymbol, builtin_symbol::EQ>) {
+      return &This::EQ;
+    } else if constexpr (std::is_same_v<BuiltinBinarySymbol,  // NOLINT
+                                        builtin_symbol::NE>) {
+      return &This::NE;
+    } else {
+      return adt::Nothing{};
+    }
+  }
+
+  static Result<ValueT> EQ(const ValueT& lhs_val, const ValueT& rhs_val) {
+    const auto& opt_lhs = lhs_val.template TryGet<PointerValue>();
+    ADT_RETURN_IF_ERR(opt_lhs);
+    const auto& lhs = opt_lhs.GetOkValue();
+    const auto& opt_rhs = rhs_val.template TryGet<PointerValue>();
+    ADT_RETURN_IF_ERR(opt_rhs);
+    const auto& rhs = opt_rhs.GetOkValue();
+    const auto& pattern_match =
+        ::common::Overloaded{[](auto lhs, auto rhs) -> ValueT {
+          if constexpr (std::is_same_v<decltype(lhs), decltype(rhs)>) {
+            return lhs == rhs;
+          } else {
+            return false;
+          }
+        }};
+    return std::visit(pattern_match, lhs.variant(), rhs.variant());
+  }
+
+  static Result<ValueT> NE(const ValueT& lhs_val, const ValueT& rhs_val) {
+    const auto& opt_lhs = lhs_val.template TryGet<PointerValue>();
+    ADT_RETURN_IF_ERR(opt_lhs);
+    const auto& lhs = opt_lhs.GetOkValue();
+    const auto& opt_rhs = rhs_val.template TryGet<PointerValue>();
+    ADT_RETURN_IF_ERR(opt_rhs);
+    const auto& rhs = opt_rhs.GetOkValue();
+    const auto& pattern_match =
+        ::common::Overloaded{[](auto lhs, auto rhs) -> ValueT {
+          if constexpr (std::is_same_v<decltype(lhs), decltype(rhs)>) {
+            return lhs != rhs;
+          } else {
+            return true;
+          }
+        }};
+    return std::visit(pattern_match, lhs.variant(), rhs.variant());
+  }
+};
+
+template <typename ValueT>
+struct MethodClassImpl<ValueT, PointerValue>
+    : public PointerValueMethodClass<ValueT> {};
+
+template <typename ValueT>
+struct MethodClassImpl<ValueT, TypeImpl<PointerValue>>
+    : public EmptyMethodClass<ValueT> {};
+
+}  // namespace ap::axpr