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#pragma once
#include <vcpkg/base/fwd/stringview.h>
#include <vcpkg/base/optional.h>
#include <limits>
#include <string>
#include <vector>
namespace vcpkg
{
struct StringView
{
static std::vector<StringView> find_all_enclosed(const StringView& input,
const std::string& left_delim,
const std::string& right_delim);
static StringView find_exactly_one_enclosed(const StringView& input,
const std::string& left_tag,
const std::string& right_tag);
static Optional<StringView> find_at_most_one_enclosed(const StringView& input,
const std::string& left_tag,
const std::string& right_tag);
constexpr StringView() = default;
StringView(const std::string& s); // Implicit by design
// NOTE: we do this instead of the delegating constructor since delegating ctors are a perf footgun
template<size_t Sz>
constexpr StringView(const char (&arr)[Sz]) : m_ptr(arr), m_size(Sz - 1)
{
}
constexpr StringView(const char* ptr, size_t size) : m_ptr(ptr), m_size(size) { }
constexpr StringView(const char* b, const char* e) : m_ptr(b), m_size(static_cast<size_t>(e - b)) { }
constexpr const char* begin() const { return m_ptr; }
constexpr const char* end() const { return m_ptr + m_size; }
std::reverse_iterator<const char*> rbegin() const { return std::make_reverse_iterator(end()); }
std::reverse_iterator<const char*> rend() const { return std::make_reverse_iterator(begin()); }
constexpr const char* data() const { return m_ptr; }
constexpr size_t size() const { return m_size; }
std::string to_string() const;
void to_string(std::string& out) const;
StringView substr(size_t pos, size_t count = std::numeric_limits<size_t>::max()) const;
constexpr char byte_at_index(size_t pos) const { return m_ptr[pos]; }
private:
const char* m_ptr = 0;
size_t m_size = 0;
};
bool operator==(StringView lhs, StringView rhs) noexcept;
bool operator!=(StringView lhs, StringView rhs) noexcept;
bool operator<(StringView lhs, StringView rhs) noexcept;
bool operator>(StringView lhs, StringView rhs) noexcept;
bool operator<=(StringView lhs, StringView rhs) noexcept;
bool operator>=(StringView lhs, StringView rhs) noexcept;
}
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