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Add std::string_view to ConstStringRef
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This commit is contained in:
ArthurSonzogni
2025-12-14 18:08:16 +01:00
parent 9f4b2bcf96
commit 942ab6a82d
3 changed files with 56 additions and 73 deletions
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125
include/ftxui/util/ref.hpp
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@@ -18,8 +18,13 @@ template <typename T>
class ConstRef {
public:
ConstRef() = default;
// Owning constructors:
ConstRef(T t) : variant_(std::move(t)) {} // NOLINT
// Referencing constructors:
ConstRef(const T* t) : variant_(t) {} // NOLINT
ConstRef& operator=(ConstRef&&) noexcept = default;
ConstRef(const ConstRef<T>&) = default;
ConstRef(ConstRef<T>&&) noexcept = default;
@@ -47,8 +52,13 @@ template <typename T>
class Ref {
public:
Ref() = default;
// Owning constructors:
Ref(T t) : variant_(std::move(t)) {} // NOLINT
//
// Referencing constructors:
Ref(T* t) : variant_(t) {} // NOLINT
//
~Ref() = default;
Ref& operator=(Ref&&) noexcept = default;
Ref(const Ref<T>&) = default;
@@ -84,10 +94,15 @@ class StringRef : public Ref<std::string> {
public:
using Ref<std::string>::Ref;
// Owning constructors:
StringRef(const wchar_t* ref) // NOLINT
: StringRef(to_string(std::wstring(ref))) {}
StringRef(const char* ref) // NOLINT
: StringRef(std::string(ref)) {}
StringRef(std::string_view ref) // NOLINT
: StringRef(std::string(ref)) {}
StringRef(std::wstring_view ref) // NOLINT
: StringRef(to_string(ref)) {}
};
/// @brief An adapter. Own or reference a constant string. For convenience, this
@@ -96,14 +111,21 @@ class ConstStringRef : public ConstRef<std::string> {
public:
using ConstRef<std::string>::ConstRef;
// Referencing constructors:
ConstStringRef(const std::wstring* ref) // NOLINT
: ConstStringRef(to_string(*ref)) {}
// Owning constructors:
ConstStringRef(const std::wstring ref) // NOLINT
: ConstStringRef(to_string(ref)) {}
ConstStringRef(std::wstring_view ref) // NOLINT
: ConstStringRef(to_string(ref)) {}
ConstStringRef(const wchar_t* ref) // NOLINT
: ConstStringRef(to_string(std::wstring(ref))) {}
ConstStringRef(const char* ref) // NOLINT
: ConstStringRef(std::string(ref)) {}
ConstStringRef(std::string_view ref) // NOLINT
: ConstStringRef(std::string(ref)) {}
};
/// @brief An adapter. Reference a list of strings.
@@ -144,33 +166,26 @@ class ConstStringListRef {
ConstStringListRef(ConstStringListRef&&) = default;
ConstStringListRef(const ConstStringListRef&) = default;
ConstStringListRef(std::vector<std::string> value) // NOLINT
{
ConstStringListRef(std::vector<std::string> value) { // NOLINT
variant_ = std::make_shared<Variant>(value);
}
ConstStringListRef(const std::vector<std::string>* value) // NOLINT
{
ConstStringListRef(const std::vector<std::string>* value) {// NOLINT
variant_ = std::make_shared<Variant>(value);
}
ConstStringListRef(std::vector<std::string_view> value) // NOLINT
{
ConstStringListRef(std::vector<std::string_view> value) { // NOLINT
variant_ = std::make_shared<Variant>(value);
}
ConstStringListRef(const std::vector<std::string_view>* value) // NOLINT
{
ConstStringListRef(const std::vector<std::string_view>* value) { // NOLINT
variant_ = std::make_shared<Variant>(value);
}
ConstStringListRef(const std::vector<std::wstring>* value) // NOLINT
{
ConstStringListRef(const std::vector<std::wstring>* value) { // NOLINT
variant_ = std::make_shared<Variant>(value);
}
ConstStringListRef(Adapter* adapter) // NOLINT
{
ConstStringListRef(Adapter* adapter) { // NOLINT
variant_ = std::make_shared<Variant>(adapter);
}
template <typename AdapterType>
ConstStringListRef(std::unique_ptr<AdapterType> adapter) // NOLINT
{
ConstStringListRef(std::unique_ptr<AdapterType> adapter) { // NOLINT
variant_ = std::make_shared<Variant>(
static_cast<std::unique_ptr<Adapter>>(std::move(adapter)));
}
@@ -179,66 +194,34 @@ class ConstStringListRef {
return variant_ ? std::visit(SizeVisitor(), *variant_) : 0;
}
std::string operator[](size_t i) const {
if (!variant_) {
return "";
}
auto& v = *variant_;
if (std::holds_alternative<const std::vector<std::string>>(v)) {
return std::get<const std::vector<std::string>>(v)[i];
}
if (std::holds_alternative<const std::vector<std::string>*>(v)) {
return (*std::get<const std::vector<std::string>*>(v))[i];
}
if (std::holds_alternative<const std::vector<std::string_view>>(v)) {
return std::string(std::get<const std::vector<std::string_view>>(v)[i]);
}
if (std::holds_alternative<const std::vector<std::string_view>*>(v)) {
return std::string(
(*std::get<const std::vector<std::string_view>*>(v))[i]);
}
if (std::holds_alternative<const std::vector<std::wstring>*>(v)) {
return to_string((*std::get<const std::vector<std::wstring>*>(v))[i]);
}
if (std::holds_alternative<Adapter*>(v)) {
return std::string((*std::get<Adapter*>(v))[i]);
}
if (std::holds_alternative<std::unique_ptr<Adapter>>(v)) {
return std::string((*std::get<std::unique_ptr<Adapter>>(v))[i]);
}
return "";
}
std::string_view at(size_t i) const {
if (!variant_) {
return "";
}
auto& v = *variant_;
if (std::holds_alternative<const std::vector<std::string>>(v)) {
return std::get<const std::vector<std::string>>(v)[i];
}
if (std::holds_alternative<const std::vector<std::string>*>(v)) {
return (*std::get<const std::vector<std::string>*>(v))[i];
}
if (std::holds_alternative<const std::vector<std::string_view>>(v)) {
return std::get<const std::vector<std::string_view>>(v)[i];
}
if (std::holds_alternative<const std::vector<std::string_view>*>(v)) {
return (*std::get<const std::vector<std::string_view>*>(v))[i];
}
if (std::holds_alternative<const std::vector<std::wstring>*>(v)) {
return {};
}
if (std::holds_alternative<Adapter*>(v)) {
return (*std::get<Adapter*>(v))[i];
}
if (std::holds_alternative<std::unique_ptr<Adapter>>(v)) {
return (*std::get<std::unique_ptr<Adapter>>(v))[i];
}
return {};
std::string_view operator[](size_t i) const {
return variant_ ? std::visit(IndexedGetter{i}, *variant_) : "";
}
private:
struct IndexedGetter {
size_t i;
std::string_view operator()(const std::vector<std::string>& v) const {
return v[i];
}
std::string_view operator()(const std::vector<std::string>* v) const {
return (*v)[i];
}
std::string_view operator()(const std::vector<std::string_view>& v) const {
return std::string(v[i]);
}
std::string_view operator()(const std::vector<std::string_view>* v) const {
return std::string((*v)[i]);
}
std::string_view operator()(const std::vector<std::wstring>* v) const {
return to_string((*v)[i]);
}
std::string_view operator()(Adapter* v) const { return std::string((*v)[i]); }
std::string_view operator()(const std::unique_ptr<Adapter>& v) const {
return (*v)[i];
}
};
struct SizeVisitor {
size_t operator()(const std::vector<std::string>& v) const {
return v.size();