cel-cpp/eval/eval/mutable_list_impl.h at cpp-sync · cel-expr/cel-cpp

52 lines (41 loc) · 1.68 KB

* 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

* https://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 THIRD_PARTY_CEL_CPP_EVAL_PUBLIC_CONTAINERS_CONCAT_LIST_IMPL_H_

#define THIRD_PARTY_CEL_CPP_EVAL_PUBLIC_CONTAINERS_CONCAT_LIST_IMPL_H_

#include <vector>

#include "eval/public/cel_value.h"

namespace google::api::expr::runtime {

// Mutable CelList implementation intended to be used in the accumulation of

// a list within a comprehension loop.

// This value should only ever be used as an intermediate result from CEL and

// not within user code.

class MutableListImpl : public CelList {

public:

// Create a list from an initial vector of CelValues.

explicit MutableListImpl(std::vector<CelValue> values)

: values_(std::move(values)) {}

// List size.

int size() const override { return values_.size(); }

// Append a single element to the list.

void Append(const CelValue& element) { values_.push_back(element); }

// List element access operator.

CelValue operator[](int index) const override { return values_[index]; }

private:

std::vector<CelValue> values_;

};

} // namespace google::api::expr::runtime

#endif // THIRD_PARTY_CEL_CPP_EVAL_PUBLIC_CONTAINERS_CONCAT_LIST_IMPL_H_

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