Remove boost::variant (#43100)

* boost::variant -> paddle::variant

* boost::variant.apply_visit -> paddle::visit

* Update pybind_boost_hraders.h

* Fix CINN compilation errors

* Revert FetchResultType

Author: From00

paddle/fluid/distributed/collective/HCCLTools.h

@@ -18,7 +18,6 @@
 
 #include <string>
 
-#include "boost/variant.hpp"
 #include "paddle/fluid/distributed/collective/Types.h"
 #include "paddle/fluid/framework/data_type.h"
 #include "paddle/fluid/framework/variable.h"
@@ -27,6 +26,7 @@
 #include "paddle/fluid/platform/device/npu/npu_info.h"
 #include "paddle/fluid/platform/device_context.h"
 #include "paddle/fluid/platform/enforce.h"
+#include "paddle/utils/variant.h"
 
 namespace paddle {
 namespace distributed {

paddle/fluid/distributed/collective/NCCLTools.h

@@ -25,7 +25,6 @@
 
 #include <string>
 
-#include "boost/variant.hpp"
 #include "paddle/fluid/distributed/collective/Types.h"
 #include "paddle/fluid/framework/data_type.h"
 #include "paddle/fluid/framework/variable.h"
@@ -43,6 +42,7 @@
 #endif
 
 #include "paddle/fluid/platform/enforce.h"
+#include "paddle/utils/variant.h"
 
 namespace paddle {
 namespace distributed {

paddle/fluid/eager/auto_code_generator/eager_generator.cc

@@ -336,45 +336,47 @@ static std::string AttrTypeToString(const proto::AttrType& type) {
     }
     default: {
       PADDLE_THROW(platform::errors::Fatal(
-          "AttrType of type boost::variant only supports specific data types."
+          "AttrType of type paddle::variant only supports specific data types."
           "However, detected unrecognized AttrType: %d",
           type));
     }
   }
   return ret;
 }
 
-template <typename T>
-static std::string GetAttrValue(const framework::Attribute& attr,
-                                bool is_vector) {
+template <typename T, bool IsVector>
+static typename std::enable_if<IsVector, std::string>::type GetAttrValue(
+    const framework::Attribute& attr) {
   std::string val = "";
-  if (is_vector) {
-    val += "{";
-    for (auto x : BOOST_GET_CONST(std::vector<T>, attr)) {
-      val += std::to_string(x) + ",";
-    }
-    if (val.size() > 1) val.pop_back();
-    val += "}";
-  } else {
-    val = std::to_string(BOOST_GET_CONST(T, attr));
+  val += "{";
+  for (auto x : BOOST_GET_CONST(std::vector<T>, attr)) {
+    val += std::to_string(x) + ",";
   }
+  if (val.size() > 1) val.pop_back();
+  val += "}";
   return val;
 }
 
+template <typename T, bool IsVector>
+static typename std::enable_if<!IsVector, std::string>::type GetAttrValue(
+    const framework::Attribute& attr) {
+  return std::to_string(BOOST_GET_CONST(T, attr));
+}
+
 static std::pair<std::string, std::string> GetAttrType(
     const framework::Attribute& attr, bool is_arg) {
   std::string ret = "";
   std::string val = "";
-  size_t variant_pos = attr.which();
+  size_t variant_pos = attr.index();
   switch (variant_pos) {
     case (1): {
       ret = "int";
-      val = GetAttrValue<int>(attr, false);
+      val = GetAttrValue<int, false>(attr);
       break;
     }
     case (2): {
       ret = "float";
-      val = GetAttrValue<float>(attr, false);
+      val = GetAttrValue<float, false>(attr);
       break;
     }
     case (3): {
@@ -386,13 +388,13 @@ static std::pair<std::string, std::string> GetAttrType(
     case (4): {
       ret = "std::vector<int>";
       if (is_arg) ret += "&";
-      val = GetAttrValue<int>(attr, true);
+      val = GetAttrValue<int, true>(attr);
       break;
     }
     case (5): {
       ret = "std::vector<float>";
       if (is_arg) ret += "&";
-      val = GetAttrValue<float>(attr, true);
+      val = GetAttrValue<float, true>(attr);
       break;
     }
     case (6): {
@@ -408,13 +410,13 @@ static std::pair<std::string, std::string> GetAttrType(
     }
     case (7): {
       ret = "bool";
-      val = GetAttrValue<bool>(attr, false);
+      val = GetAttrValue<bool, false>(attr);
       break;
     }
     case (8): {
       ret = "std::vector<bool>";
       if (is_arg) ret += "&";
-      val = GetAttrValue<bool>(attr, true);
+      val = GetAttrValue<bool, true>(attr);
       break;
     }
     case (9): {
@@ -423,7 +425,7 @@ static std::pair<std::string, std::string> GetAttrType(
     }
     case (10): {
       ret = "int64_t";
-      val = GetAttrValue<int64_t>(attr, false);
+      val = GetAttrValue<int64_t, false>(attr);
       break;
     }
     case (11): {
@@ -434,18 +436,18 @@ static std::pair<std::string, std::string> GetAttrType(
     case (12): {
       ret = "std::vector<int64_t>";
       if (is_arg) ret += "&";
-      val = GetAttrValue<int64_t>(attr, true);
+      val = GetAttrValue<int64_t, true>(attr);
       break;
     }
     case (13): {
       ret = "std::vector<double>";
       if (is_arg) ret += "&";
-      val = GetAttrValue<double>(attr, true);
+      val = GetAttrValue<double, true>(attr);
       break;
     }
     default: {
       PADDLE_THROW(platform::errors::Fatal(
-          "AttrType of type boost::variant only supports specific data types."
+          "AttrType of type paddle::variant only supports specific data types."
           "However, detected unrecognized AttrType: %d",
           variant_pos));
     }

paddle/fluid/framework/attribute.cc

@@ -13,6 +13,7 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #include "paddle/fluid/framework/attribute.h"
+#include "boost/blank.hpp"
 
 namespace paddle {
 namespace framework {

paddle/fluid/framework/attribute.h

@@ -23,12 +23,12 @@ limitations under the License. */
 #include <unordered_set>
 #include <vector>
 
-#include "boost/variant/get.hpp"
 #include "paddle/fluid/framework/framework.pb.h"
 #include "paddle/fluid/framework/type_defs.h"
 #include "paddle/fluid/platform/enforce.h"
 #include "paddle/fluid/platform/errors.h"
 #include "paddle/utils/any.h"
+#include "paddle/utils/variant.h"
 
 namespace paddle {
 namespace framework {
@@ -45,8 +45,8 @@ struct ExtractAttribute {
   T* operator()(Attribute& attr) const {
     T* attr_value = nullptr;
     try {
-      attr_value = &boost::get<T>(attr);
-    } catch (boost::bad_get& bad_get) {
+      attr_value = &paddle::get<T>(attr);
+    } catch (paddle::bad_variant_access const& bad_get) {
       PADDLE_THROW(platform::errors::InvalidArgument(
           "Cannot get attribute (%s) by type %s, its type is %s.",
           attr_name_,
@@ -80,8 +80,8 @@ struct ExtractAttribute<bool> {
     }
     bool* attr_value = nullptr;
     try {
-      attr_value = &boost::get<bool>(attr);
-    } catch (boost::bad_get& bad_get) {
+      attr_value = &paddle::get<bool>(attr);
+    } catch (paddle::bad_variant_access const& bad_get) {
       PADDLE_THROW(platform::errors::InvalidArgument(
           "Cannot get attribute (%s) by type bool, its type is %s.",
           attr_name_,
@@ -108,8 +108,8 @@ struct ExtractAttribute<int64_t> {
     }
     int64_t* attr_value = nullptr;
     try {
-      attr_value = &boost::get<int64_t>(attr);
-    } catch (boost::bad_get& bad_get) {
+      attr_value = &paddle::get<int64_t>(attr);
+    } catch (paddle::bad_variant_access const& bad_get) {
       PADDLE_THROW(platform::errors::InvalidArgument(
           "Cannot get attribute (%s) by type int64_t, its type is %s.",
           attr_name_,
@@ -138,8 +138,8 @@ struct ExtractAttribute<std::vector<int64_t>> {
     }
     std::vector<int64_t>* attr_value = nullptr;
     try {
-      attr_value = &boost::get<std::vector<int64_t>>(attr);
-    } catch (boost::bad_get& bad_get) {
+      attr_value = &paddle::get<std::vector<int64_t>>(attr);
+    } catch (paddle::bad_variant_access const& bad_get) {
       PADDLE_THROW(platform::errors::InvalidArgument(
           "Cannot get attribute (%s) by type std::vector<int64_t>, its type is "
           "%s.",
@@ -167,8 +167,8 @@ struct ExtractAttribute<float> {
     }
     float* attr_value = nullptr;
     try {
-      attr_value = &boost::get<float>(attr);
-    } catch (boost::bad_get& bad_get) {
+      attr_value = &paddle::get<float>(attr);
+    } catch (paddle::bad_variant_access const& bad_get) {
       PADDLE_THROW(platform::errors::InvalidArgument(
           "Cannot get attribute (%s) by type float, its type is %s.",
           attr_name_,
@@ -197,8 +197,8 @@ struct ExtractAttribute<std::vector<double>> {
     }
     std::vector<double>* attr_value = nullptr;
     try {
-      attr_value = &boost::get<std::vector<double>>(attr);
-    } catch (boost::bad_get& bad_get) {
+      attr_value = &paddle::get<std::vector<double>>(attr);
+    } catch (paddle::bad_variant_access const& bad_get) {
       PADDLE_THROW(platform::errors::InvalidArgument(
           "Cannot get attribute (%s) by type std::vector<double>, its type is "
           "%s.",
@@ -214,11 +214,11 @@ struct ExtractAttribute<std::vector<double>> {
 template <typename T>
 inline proto::AttrType AttrTypeID() {
   Attribute tmp = T();
-  return static_cast<proto::AttrType>(tmp.which() - 1);
+  return static_cast<proto::AttrType>(tmp.index() - 1);
 }
 
 inline proto::AttrType AttrTypeID(const Attribute& attr) {
-  return static_cast<proto::AttrType>(attr.which() - 1);
+  return static_cast<proto::AttrType>(attr.index() - 1);
 }
 
 class AttrReader {

paddle/fluid/framework/block_desc.cc

@@ -272,7 +272,7 @@ void BlockDesc::MoveFrom(BlockDesc *block) {
     for (const auto &pair : src_op->GetAttrMap()) {
       const auto &attr_name = pair.first;
       const auto &attr_value = pair.second;
-      auto attr_type = static_cast<proto::AttrType>(attr_value.which() - 1);
+      auto attr_type = static_cast<proto::AttrType>(attr_value.index() - 1);
       if (attr_type == proto::AttrType::BLOCK) {
         auto block_id = BOOST_GET_CONST(BlockDesc *, attr_value)->ID();
         dst_op->SetBlockAttr(attr_name, prog_->MutableBlock(block_id));

paddle/fluid/framework/details/async_ssa_graph_executor.cc

@@ -174,7 +174,7 @@ FetchResultType AsyncSSAGraphExecutor::Run(
   HandleException();
 
   FetchList ret;
-  auto &val = BOOST_GET(FetchList, fetch_data);
+  auto &val = boost::get<FetchList>(fetch_data);
   for (size_t fetch_idx = 0; fetch_idx < fetch_tensors.size(); ++fetch_idx) {
     if (data_is_lod_tensor(val.at(fetch_idx))) {
       std::vector<const LoDTensor *> lodtensor_ptrs;

paddle/fluid/framework/details/fetch_async_op_handle.cc

@@ -228,7 +228,7 @@ void FetchAsyncOpHandle::RunImpl() {
   }
 
   if (return_merged_) {
-    auto &val = BOOST_GET(FetchList, *data_);
+    auto &val = boost::get<FetchList>(*data_);
     if (src_vars[0]->IsType<LoDTensor>()) {
       // to lodtensor type
       std::vector<const LoDTensor *> src_lodtensors;
@@ -263,7 +263,7 @@ void FetchAsyncOpHandle::RunImpl() {
       val.at(offset_) = std::move(dst_lodtensor_array);
     }
   } else {
-    auto &val = BOOST_GET(FetchUnmergedList, *data_);
+    auto &val = boost::get<FetchUnmergedList>(*data_);
     auto &dst_tensors = val.at(offset_);
     dst_tensors.reserve(src_vars.size());
 

paddle/fluid/framework/details/fetch_op_handle.cc

@@ -84,7 +84,7 @@ void FetchOpHandle::WaitAndMergeCPUFetchVars() const {
       for (auto &t : tensors_) {
         tensors_ptr.emplace_back(&BOOST_GET_CONST(LoDTensor, t));
       }
-      auto &val = BOOST_GET(FetchList, *data_);
+      auto &val = boost::get<FetchList>(*data_);
       LoDTensor var;
       MergeLoDTensor(&var, tensors_ptr, platform::CPUPlace());
       val.at(offset_) = std::move(var);
@@ -106,11 +106,11 @@ void FetchOpHandle::WaitAndMergeCPUFetchVars() const {
         tmp_array.emplace_back();
         MergeLoDTensor(&(tmp_array.back()), tensors_ptr, platform::CPUPlace());
       }
-      auto &val = BOOST_GET(FetchList, *data_);
+      auto &val = boost::get<FetchList>(*data_);
       val.at(offset_) = std::move(tmp_array);
     }
   } else {
-    auto &val = BOOST_GET(FetchUnmergedList, *data_);
+    auto &val = boost::get<FetchUnmergedList>(*data_);
     val.at(offset_) = std::move(tensors_);
   }
 }

paddle/fluid/framework/details/parallel_ssa_graph_executor.cc

@@ -278,8 +278,7 @@ FetchResultType ParallelSSAGraphExecutor::Run(
         if (!is_valid[scope_idx]) {
           continue;
         }
-        const auto &fetch_list =
-            BOOST_GET_CONST(FetchList, fetch_data[scope_idx]);
+        const auto &fetch_list = boost::get<FetchList>(fetch_data[scope_idx]);
         if (data_is_lod_tensor(fetch_list[fetch_idx])) {
           lodtensor_ptrs.push_back(
               &(BOOST_GET_CONST(LoDTensor, fetch_list[fetch_idx])));
@@ -318,7 +317,7 @@ FetchResultType ParallelSSAGraphExecutor::Run(
           continue;
         }
         const auto &fetch_list =
-            BOOST_GET_CONST(FetchUnmergedList, fetch_data[scope_idx]);
+            boost::get<FetchUnmergedList>(fetch_data[scope_idx]);
         PADDLE_ENFORCE_EQ(
             fetch_list[fetch_idx].size(),
             1,