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/*
* libfud
* Copyright 2024 Dominick Allen
*
* 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.
*/
#ifndef FUD_STRING_VIEW_HPP
#define FUD_STRING_VIEW_HPP
#include "fud_status.hpp"
#include "fud_utf8.hpp"
#include "fud_config.hpp"
#include "fud_assert.hpp"
#include <string_view>
namespace fud {
class String;
struct StringView {
constexpr StringView() noexcept = default;
constexpr StringView(const StringView& rhs) noexcept = default;
constexpr StringView(StringView&& rhs) noexcept = default;
constexpr ~StringView() noexcept = default;
constexpr StringView& operator=(const StringView& rhs) = default;
constexpr StringView& operator=(StringView&& rhs) = default;
constexpr StringView(size_t strLen, const utf8* strData) : m_length(strLen), m_data{strData}
{
}
StringView(size_t strLen, const char* strData) :
m_length(strLen), // line break
m_data{reinterpret_cast<const utf8*>(strData)} // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
{
}
StringView(std::string_view rhs) noexcept : StringView(rhs.length(), rhs.data()) {}
explicit StringView(const String& fudString) noexcept;
[[nodiscard]] constexpr size_t length() const
{
return m_length;
}
[[nodiscard]] constexpr const utf8* data() const
{
return m_data;
}
constexpr const utf8& operator[](size_t index) const
{
if constexpr (fudBoundsChecking) {
fudAssert(m_data != nullptr);
fudAssert(index < m_length);
}
return m_data[index];
}
constexpr const utf8* begin() const noexcept
{
return m_data;
}
constexpr const utf8* end() const noexcept
{
return m_data + m_length;
}
[[nodiscard]] bool nullTerminated() const;
[[nodiscard]] bool utf8Valid() const;
Result<size_t, FudStatus> skipWhitespace();
Result<size_t, FudStatus> trimWhitespace();
[[nodiscard]] bool advance();
void advanceUnsafe();
[[nodiscard]] bool advance(size_t size);
void advanceUnsafe(size_t size);
size_t m_length{0};
const utf8* m_data{nullptr};
auto operator<=>(const StringView& rhs) const noexcept = default;
};
} // namespace fud
#endif
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