libddwaf-src 2.0.1

Source distribution and build integration for DataDog/libddwaf
Documentation 
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// Unless explicitly stated otherwise all files in this repository are
// dual-licensed under the Apache-2.0 License or BSD-3-Clause License.
//
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2021 Datadog, Inc.

#pragma once

#include <ac.h>
#include <cstdint>
#include <memory>
#include <string_view>
#include <utility>
#include <vector>

#include "dynamic_string.hpp"
#include "matcher/base.hpp"
#include "object_type.hpp"

namespace ddwaf::matcher {

class phrase_match : public base_impl<phrase_match> {
public:
    static constexpr std::string_view matcher_name = "phrase_match";
    static constexpr std::string_view negated_matcher_name = "!phrase_match";

    phrase_match(std::vector<const char *> pattern, std::vector<uint32_t> lengths,
        bool enforce_word_boundary = false);
    ~phrase_match() override = default;
    phrase_match(const phrase_match &) = delete;
    phrase_match(phrase_match &&) noexcept = default;
    phrase_match &operator=(const phrase_match &) = delete;
    phrase_match &operator=(phrase_match &&) noexcept = default;

protected:
    static constexpr std::string_view to_string_impl() { return ""; }
    static constexpr bool is_supported_type_impl(object_type type)
    {
        return (type & object_type::string) != 0;
    }

    [[nodiscard]] std::pair<bool, dynamic_string> match_impl(std::string_view pattern) const;

    bool enforce_word_boundary_{false};
    std::unique_ptr<ac_t, void (*)(void *)> ac{nullptr, nullptr};

    friend class base_impl<phrase_match>;
};

} // namespace ddwaf::matcher