constant_expression.cpp

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/*
 * Copyright 2026 MusicScience37 (Kenta Kabashima)
 *
 * 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.
 */
#include "func_sketch/expressions/constant_expression.h"
 
#include <type_traits>
 
#include <fmt/format.h>
 
#include "func_sketch/common_types.h"
 
// NOLINTNEXTLINE(*-static): API of an external library.
auto fmt::formatter<func_sketch::expressions::ConstantExpression>::format(
    const func_sketch::expressions::ConstantExpression& value,
    format_context& context) const -> format_context::iterator {
    return std::visit(
        [&context](const auto& actual_value) {
            using ValueType = std::decay_t<decltype(actual_value)>;
            if constexpr (std::is_same_v<ValueType, func_sketch::Complex>) {
                return fmt::format_to(context.out(), "({} + {}i)",
                    actual_value.real(), actual_value.imag());
            } else {
                return fmt::format_to(context.out(), "{}", actual_value);
            }
        },
        value.value);
}