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2026-07-13 12:40:42 +08:00

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// Copyright (c) 2022 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/phi/api/lib/utils/allocator.h"
#include "paddle/phi/common/int_array.h"
#include "paddle/phi/core/string_tensor.h"
#include "paddle/phi/infermeta/strings/nullary.h"
#include "paddle/phi/infermeta/strings/unary.h"
namespace phi {
namespace strings {
template <typename Context>
void EmptyKernel(const Context& dev_ctx,
const IntArray& shape,
StringTensor* out);
template <typename Context>
void EmptyLikeKernel(const Context& dev_ctx, StringTensor* out);
// TODO(zhoushunjie): the tensor creation method need to be replaced later,
// all kernel api call Empty here instead of making tensor self
template <typename Context>
StringTensor Empty(const Context& dev_ctx, StringTensorMeta&& meta) {
auto allocator = std::make_unique<paddle::experimental::DefaultAllocator>(
dev_ctx.GetPlace());
phi::StringTensor string_out(allocator.get(), std::move(meta));
return string_out;
}
template <typename Context>
StringTensor Empty(const Context& dev_ctx) {
return Empty<Context>(dev_ctx, {{-1}});
}
template <typename Context>
StringTensor Empty(const Context& dev_ctx, const IntArray& shape) {
StringTensor string_out;
MetaTensor meta_out(&string_out);
phi::strings::CreateInferMeta(shape, &meta_out);
EmptyKernel<Context>(dev_ctx, shape, &string_out);
return string_out;
}
template <typename Context>
StringTensor EmptyLike(const Context& dev_ctx, const StringTensor& x) {
StringTensor string_out;
MetaTensor meta_out(&string_out);
phi::strings::UnchangedInferMeta(x.meta(), &meta_out);
EmptyLikeKernel<Context>(dev_ctx, &string_out);
return string_out;
}
} // namespace strings
} // namespace phi