blob: 04986559ff7423f5644aae3e9bab0aae2efd2988 [file] [log] [blame]
#include "../include/cxx.h"
#include <cstring>
#include <iostream>
#include <memory>
extern "C" {
void cxxbridge1$cxx_string$init(std::string *s, const std::uint8_t *ptr,
std::size_t len) noexcept {
new (s) std::string(reinterpret_cast<const char *>(ptr), len);
}
void cxxbridge1$cxx_string$destroy(std::string *s) noexcept {
using std::string;
s->~string();
}
const char *cxxbridge1$cxx_string$data(const std::string &s) noexcept {
return s.data();
}
std::size_t cxxbridge1$cxx_string$length(const std::string &s) noexcept {
return s.length();
}
void cxxbridge1$cxx_string$push(std::string &s, const std::uint8_t *ptr,
std::size_t len) noexcept {
s.append(reinterpret_cast<const char *>(ptr), len);
}
// rust::String
void cxxbridge1$string$new(rust::String *self) noexcept;
void cxxbridge1$string$clone(rust::String *self,
const rust::String &other) noexcept;
bool cxxbridge1$string$from(rust::String *self, const char *ptr,
std::size_t len) noexcept;
void cxxbridge1$string$drop(rust::String *self) noexcept;
const char *cxxbridge1$string$ptr(const rust::String *self) noexcept;
std::size_t cxxbridge1$string$len(const rust::String *self) noexcept;
void cxxbridge1$string$reserve_total(rust::String *self, size_t cap) noexcept;
// rust::Str
bool cxxbridge1$str$valid(const char *ptr, std::size_t len) noexcept;
} // extern "C"
namespace rust {
inline namespace cxxbridge1 {
template <typename Exception>
void panic [[noreturn]] (const char *msg) {
#if defined(RUST_CXX_NO_EXCEPTIONS)
std::cerr << "Error: " << msg << ". Aborting." << std::endl;
std::terminate();
#else
throw Exception(msg);
#endif
}
template void panic<std::out_of_range>[[noreturn]] (const char *msg);
String::String() noexcept { cxxbridge1$string$new(this); }
String::String(const String &other) noexcept {
cxxbridge1$string$clone(this, other);
}
String::String(String &&other) noexcept : repr(other.repr) {
cxxbridge1$string$new(&other);
}
String::~String() noexcept { cxxbridge1$string$drop(this); }
static void initString(String *self, const char *s, std::size_t len) {
if (!cxxbridge1$string$from(self, s, len)) {
panic<std::invalid_argument>("data for rust::String is not utf-8");
}
}
String::String(const std::string &s) { initString(this, s.data(), s.length()); }
String::String(const char *s) {
assert(s != nullptr);
initString(this, s, std::strlen(s));
}
String::String(const char *s, std::size_t len) {
assert(s != nullptr || len == 0);
initString(this,
s == nullptr && len == 0 ? reinterpret_cast<const char *>(1) : s,
len);
}
String &String::operator=(const String &other) noexcept {
if (this != &other) {
cxxbridge1$string$drop(this);
cxxbridge1$string$clone(this, other);
}
return *this;
}
String &String::operator=(String &&other) noexcept {
if (this != &other) {
cxxbridge1$string$drop(this);
this->repr = other.repr;
cxxbridge1$string$new(&other);
}
return *this;
}
String::operator std::string() const {
return std::string(this->data(), this->size());
}
const char *String::data() const noexcept {
return cxxbridge1$string$ptr(this);
}
std::size_t String::size() const noexcept {
return cxxbridge1$string$len(this);
}
std::size_t String::length() const noexcept {
return cxxbridge1$string$len(this);
}
const char *String::c_str() noexcept {
auto len = this->length();
cxxbridge1$string$reserve_total(this, len + 1);
auto ptr = this->data();
const_cast<char *>(ptr)[len] = '\0';
return ptr;
}
void String::swap(String &rhs) noexcept {
using std::swap;
swap(this->repr, rhs.repr);
}
String::iterator String::begin() noexcept {
return const_cast<char *>(this->data());
}
String::iterator String::end() noexcept {
return const_cast<char *>(this->data()) + this->size();
}
String::const_iterator String::begin() const noexcept { return this->cbegin(); }
String::const_iterator String::end() const noexcept { return this->cend(); }
String::const_iterator String::cbegin() const noexcept { return this->data(); }
String::const_iterator String::cend() const noexcept {
return this->data() + this->size();
}
bool String::operator==(const String &rhs) const noexcept {
return rust::Str(*this) == rust::Str(rhs);
}
bool String::operator!=(const String &rhs) const noexcept {
return rust::Str(*this) != rust::Str(rhs);
}
bool String::operator<(const String &rhs) const noexcept {
return rust::Str(*this) < rust::Str(rhs);
}
bool String::operator<=(const String &rhs) const noexcept {
return rust::Str(*this) <= rust::Str(rhs);
}
bool String::operator>(const String &rhs) const noexcept {
return rust::Str(*this) > rust::Str(rhs);
}
bool String::operator>=(const String &rhs) const noexcept {
return rust::Str(*this) >= rust::Str(rhs);
}
String::String(unsafe_bitcopy_t, const String &bits) noexcept
: repr(bits.repr) {}
std::ostream &operator<<(std::ostream &os, const String &s) {
os.write(s.data(), s.size());
return os;
}
Str::Str() noexcept : ptr(reinterpret_cast<const char *>(1)), len(0) {}
Str::Str(const String &s) noexcept : ptr(s.data()), len(s.length()) {}
static void initStr(const char *ptr, std::size_t len) {
if (!cxxbridge1$str$valid(ptr, len)) {
panic<std::invalid_argument>("data for rust::Str is not utf-8");
}
}
Str::Str(const std::string &s) : ptr(s.data()), len(s.length()) {
initStr(this->ptr, this->len);
}
Str::Str(const char *s) : ptr(s), len(std::strlen(s)) {
assert(s != nullptr);
initStr(this->ptr, this->len);
}
Str::Str(const char *s, std::size_t len)
: ptr(s == nullptr && len == 0 ? reinterpret_cast<const char *>(1) : s),
len(len) {
assert(s != nullptr || len == 0);
initStr(this->ptr, this->len);
}
Str::operator std::string() const {
return std::string(this->data(), this->size());
}
Str::const_iterator Str::begin() const noexcept { return this->cbegin(); }
Str::const_iterator Str::end() const noexcept { return this->cend(); }
Str::const_iterator Str::cbegin() const noexcept { return this->ptr; }
Str::const_iterator Str::cend() const noexcept { return this->ptr + this->len; }
bool Str::operator==(const Str &rhs) const noexcept {
return this->len == rhs.len &&
std::equal(this->begin(), this->end(), rhs.begin());
}
bool Str::operator!=(const Str &rhs) const noexcept { return !(*this == rhs); }
bool Str::operator<(const Str &rhs) const noexcept {
return std::lexicographical_compare(this->begin(), this->end(), rhs.begin(),
rhs.end());
}
bool Str::operator<=(const Str &rhs) const noexcept {
// std::mismatch(this->begin(), this->end(), rhs.begin(), rhs.end()), except
// without Undefined Behavior on C++11 if rhs is shorter than *this.
const_iterator liter = this->begin(), lend = this->end(), riter = rhs.begin(),
rend = rhs.end();
while (liter != lend && riter != rend && *liter == *riter) {
++liter, ++riter;
}
if (liter == lend) {
return true; // equal or *this is a prefix of rhs
} else if (riter == rend) {
return false; // rhs is a prefix of *this
} else {
return *liter <= *riter;
}
}
bool Str::operator>(const Str &rhs) const noexcept { return rhs < *this; }
bool Str::operator>=(const Str &rhs) const noexcept { return rhs <= *this; }
std::ostream &operator<<(std::ostream &os, const Str &s) {
os.write(s.data(), s.size());
return os;
}
// Rust specifies that usize is ABI compatible with C's uintptr_t.
// https://rust-lang.github.io/unsafe-code-guidelines/layout/scalars.html#isize-and-usize
// However there is no direct Rust equivalent for size_t. C does not guarantee
// that size_t and uintptr_t are compatible. In practice though, on all
// platforms supported by Rust, they are identical for ABI purposes. See the
// libc crate which unconditionally defines libc::size_t = usize. We expect the
// same here and these assertions are just here to explicitly document that.
// *Note that no assumption is made about C++ name mangling of signatures
// containing these types, not here nor anywhere in CXX.*
static_assert(sizeof(std::size_t) == sizeof(std::uintptr_t),
"unsupported size_t size");
static_assert(alignof(std::size_t) == alignof(std::uintptr_t),
"unsupported size_t alignment");
static_assert(sizeof(rust::isize) == sizeof(std::intptr_t),
"unsupported ssize_t size");
static_assert(alignof(rust::isize) == alignof(std::intptr_t),
"unsupported ssize_t alignment");
static_assert(std::is_trivially_copy_constructible<Str>::value,
"trivial Str(const Str &)");
static_assert(std::is_trivially_copy_assignable<Str>::value,
"trivial operator=(const Str &)");
static_assert(std::is_trivially_destructible<Str>::value, "trivial ~Str()");
static_assert(
std::is_trivially_copy_constructible<Slice<const std::uint8_t>>::value,
"trivial Slice(const Slice &)");
static_assert(
std::is_trivially_move_constructible<Slice<const std::uint8_t>>::value,
"trivial Slice(Slice &&)");
static_assert(
std::is_trivially_copy_assignable<Slice<const std::uint8_t>>::value,
"trivial Slice::operator=(const Slice &) for const slices");
static_assert(
std::is_trivially_move_assignable<Slice<const std::uint8_t>>::value,
"trivial Slice::operator=(Slice &&)");
static_assert(std::is_trivially_destructible<Slice<const std::uint8_t>>::value,
"trivial ~Slice()");
static_assert(std::is_trivially_copy_constructible<Slice<std::uint8_t>>::value,
"trivial Slice(const Slice &)");
static_assert(std::is_trivially_move_constructible<Slice<std::uint8_t>>::value,
"trivial Slice(Slice &&)");
static_assert(!std::is_copy_assignable<Slice<std::uint8_t>>::value,
"delete Slice::operator=(const Slice &) for mut slices");
static_assert(std::is_trivially_move_assignable<Slice<std::uint8_t>>::value,
"trivial Slice::operator=(Slice &&)");
static_assert(std::is_trivially_destructible<Slice<std::uint8_t>>::value,
"trivial ~Slice()");
static_assert(std::is_same<Vec<std::uint8_t>::const_iterator,
Vec<const std::uint8_t>::iterator>::value,
"Vec<T>::const_iterator == Vec<const T>::iterator");
static_assert(std::is_same<Vec<const std::uint8_t>::const_iterator,
Vec<const std::uint8_t>::iterator>::value,
"Vec<const T>::const_iterator == Vec<const T>::iterator");
static_assert(!std::is_same<Vec<std::uint8_t>::const_iterator,
Vec<std::uint8_t>::iterator>::value,
"Vec<T>::const_iterator != Vec<T>::iterator");
extern "C" {
const char *cxxbridge1$error(const char *ptr, std::size_t len) {
char *copy = new char[len];
std::strncpy(copy, ptr, len);
return copy;
}
} // extern "C"
Error::Error(const Error &other)
: std::exception(other), msg(cxxbridge1$error(other.msg, other.len)),
len(other.len) {}
Error::Error(Error &&other) noexcept
: std::exception(std::move(other)), msg(other.msg), len(other.len) {
other.msg = nullptr;
other.len = 0;
}
Error::~Error() noexcept { delete[] this->msg; }
Error &Error::operator=(const Error &other) {
if (this != &other) {
std::exception::operator=(other);
delete[] this->msg;
this->msg = nullptr;
this->msg = cxxbridge1$error(other.msg, other.len);
this->len = other.len;
}
return *this;
}
Error &Error::operator=(Error &&other) noexcept {
if (this != &other) {
std::exception::operator=(std::move(other));
this->msg = other.msg;
this->len = other.len;
other.msg = nullptr;
other.len = 0;
}
return *this;
}
const char *Error::what() const noexcept { return this->msg; }
namespace {
template <typename T>
union MaybeUninit {
T value;
MaybeUninit() {}
~MaybeUninit() {}
};
} // namespace
} // namespace cxxbridge1
} // namespace rust
extern "C" {
void cxxbridge1$unique_ptr$std$string$null(
std::unique_ptr<std::string> *ptr) noexcept {
new (ptr) std::unique_ptr<std::string>();
}
void cxxbridge1$unique_ptr$std$string$raw(std::unique_ptr<std::string> *ptr,
std::string *raw) noexcept {
new (ptr) std::unique_ptr<std::string>(raw);
}
const std::string *cxxbridge1$unique_ptr$std$string$get(
const std::unique_ptr<std::string> &ptr) noexcept {
return ptr.get();
}
std::string *cxxbridge1$unique_ptr$std$string$release(
std::unique_ptr<std::string> &ptr) noexcept {
return ptr.release();
}
void cxxbridge1$unique_ptr$std$string$drop(
std::unique_ptr<std::string> *ptr) noexcept {
ptr->~unique_ptr();
}
} // extern "C"
namespace {
const std::size_t kMaxExpectedWordsInString = 8;
static_assert(alignof(std::string) <= alignof(void *),
"unexpectedly large std::string alignment");
static_assert(sizeof(std::string) <= kMaxExpectedWordsInString * sizeof(void *),
"unexpectedly large std::string size");
} // namespace
#define STD_VECTOR_OPS(RUST_TYPE, CXX_TYPE) \
std::size_t cxxbridge1$std$vector$##RUST_TYPE##$size( \
const std::vector<CXX_TYPE> &s) noexcept { \
return s.size(); \
} \
CXX_TYPE *cxxbridge1$std$vector$##RUST_TYPE##$get_unchecked( \
std::vector<CXX_TYPE> *s, std::size_t pos) noexcept { \
return &(*s)[pos]; \
} \
void cxxbridge1$unique_ptr$std$vector$##RUST_TYPE##$null( \
std::unique_ptr<std::vector<CXX_TYPE>> *ptr) noexcept { \
new (ptr) std::unique_ptr<std::vector<CXX_TYPE>>(); \
} \
void cxxbridge1$unique_ptr$std$vector$##RUST_TYPE##$raw( \
std::unique_ptr<std::vector<CXX_TYPE>> *ptr, \
std::vector<CXX_TYPE> *raw) noexcept { \
new (ptr) std::unique_ptr<std::vector<CXX_TYPE>>(raw); \
} \
const std::vector<CXX_TYPE> \
*cxxbridge1$unique_ptr$std$vector$##RUST_TYPE##$get( \
const std::unique_ptr<std::vector<CXX_TYPE>> &ptr) noexcept { \
return ptr.get(); \
} \
std::vector<CXX_TYPE> \
*cxxbridge1$unique_ptr$std$vector$##RUST_TYPE##$release( \
std::unique_ptr<std::vector<CXX_TYPE>> &ptr) noexcept { \
return ptr.release(); \
} \
void cxxbridge1$unique_ptr$std$vector$##RUST_TYPE##$drop( \
std::unique_ptr<std::vector<CXX_TYPE>> *ptr) noexcept { \
ptr->~unique_ptr(); \
}
#define RUST_VEC_EXTERNS(RUST_TYPE, CXX_TYPE) \
void cxxbridge1$rust_vec$##RUST_TYPE##$new( \
rust::Vec<CXX_TYPE> *ptr) noexcept; \
void cxxbridge1$rust_vec$##RUST_TYPE##$drop( \
rust::Vec<CXX_TYPE> *ptr) noexcept; \
std::size_t cxxbridge1$rust_vec$##RUST_TYPE##$len( \
const rust::Vec<CXX_TYPE> *ptr) noexcept; \
std::size_t cxxbridge1$rust_vec$##RUST_TYPE##$capacity( \
const rust::Vec<CXX_TYPE> *ptr) noexcept; \
const CXX_TYPE *cxxbridge1$rust_vec$##RUST_TYPE##$data( \
const rust::Vec<CXX_TYPE> *ptr) noexcept; \
void cxxbridge1$rust_vec$##RUST_TYPE##$reserve_total( \
rust::Vec<CXX_TYPE> *ptr, std::size_t cap) noexcept; \
void cxxbridge1$rust_vec$##RUST_TYPE##$set_len(rust::Vec<CXX_TYPE> *ptr, \
std::size_t len) noexcept;
#define RUST_VEC_OPS(RUST_TYPE, CXX_TYPE) \
template <> \
Vec<CXX_TYPE>::Vec() noexcept { \
cxxbridge1$rust_vec$##RUST_TYPE##$new(this); \
} \
template <> \
void Vec<CXX_TYPE>::drop() noexcept { \
return cxxbridge1$rust_vec$##RUST_TYPE##$drop(this); \
} \
template <> \
std::size_t Vec<CXX_TYPE>::size() const noexcept { \
return cxxbridge1$rust_vec$##RUST_TYPE##$len(this); \
} \
template <> \
std::size_t Vec<CXX_TYPE>::capacity() const noexcept { \
return cxxbridge1$rust_vec$##RUST_TYPE##$capacity(this); \
} \
template <> \
const CXX_TYPE *Vec<CXX_TYPE>::data() const noexcept { \
return cxxbridge1$rust_vec$##RUST_TYPE##$data(this); \
} \
template <> \
void Vec<CXX_TYPE>::reserve_total(std::size_t cap) noexcept { \
cxxbridge1$rust_vec$##RUST_TYPE##$reserve_total(this, cap); \
} \
template <> \
void Vec<CXX_TYPE>::set_len(std::size_t len) noexcept { \
cxxbridge1$rust_vec$##RUST_TYPE##$set_len(this, len); \
}
#define SHARED_PTR_OPS(RUST_TYPE, CXX_TYPE) \
static_assert(sizeof(std::shared_ptr<CXX_TYPE>) == 2 * sizeof(void *), ""); \
static_assert(alignof(std::shared_ptr<CXX_TYPE>) == alignof(void *), ""); \
void cxxbridge1$std$shared_ptr$##RUST_TYPE##$null( \
std::shared_ptr<CXX_TYPE> *ptr) noexcept { \
new (ptr) std::shared_ptr<CXX_TYPE>(); \
} \
CXX_TYPE *cxxbridge1$std$shared_ptr$##RUST_TYPE##$uninit( \
std::shared_ptr<CXX_TYPE> *ptr) noexcept { \
CXX_TYPE *uninit = \
reinterpret_cast<CXX_TYPE *>(new rust::MaybeUninit<CXX_TYPE>); \
new (ptr) std::shared_ptr<CXX_TYPE>(uninit); \
return uninit; \
} \
void cxxbridge1$std$shared_ptr$##RUST_TYPE##$clone( \
const std::shared_ptr<CXX_TYPE> &self, \
std::shared_ptr<CXX_TYPE> *ptr) noexcept { \
new (ptr) std::shared_ptr<CXX_TYPE>(self); \
} \
const CXX_TYPE *cxxbridge1$std$shared_ptr$##RUST_TYPE##$get( \
const std::shared_ptr<CXX_TYPE> &self) noexcept { \
return self.get(); \
} \
void cxxbridge1$std$shared_ptr$##RUST_TYPE##$drop( \
const std::shared_ptr<CXX_TYPE> *self) noexcept { \
self->~shared_ptr(); \
} \
static_assert(sizeof(std::weak_ptr<CXX_TYPE>) == 2 * sizeof(void *), ""); \
static_assert(alignof(std::weak_ptr<CXX_TYPE>) == alignof(void *), ""); \
void cxxbridge1$std$weak_ptr$##RUST_TYPE##$null( \
std::weak_ptr<CXX_TYPE> *ptr) noexcept { \
new (ptr) std::weak_ptr<CXX_TYPE>(); \
} \
void cxxbridge1$std$weak_ptr$##RUST_TYPE##$clone( \
const std::weak_ptr<CXX_TYPE> &self, \
std::weak_ptr<CXX_TYPE> *ptr) noexcept { \
new (ptr) std::weak_ptr<CXX_TYPE>(self); \
} \
void cxxbridge1$std$weak_ptr$##RUST_TYPE##$downgrade( \
const std::shared_ptr<CXX_TYPE> &shared, \
std::weak_ptr<CXX_TYPE> *weak) noexcept { \
new (weak) std::weak_ptr<CXX_TYPE>(shared); \
} \
void cxxbridge1$std$weak_ptr$##RUST_TYPE##$upgrade( \
const std::weak_ptr<CXX_TYPE> &weak, \
std::shared_ptr<CXX_TYPE> *shared) noexcept { \
new (shared) std::shared_ptr<CXX_TYPE>(weak.lock()); \
} \
void cxxbridge1$std$weak_ptr$##RUST_TYPE##$drop( \
const std::weak_ptr<CXX_TYPE> *self) noexcept { \
self->~weak_ptr(); \
}
// Usize and isize are the same type as one of the below.
#define FOR_EACH_NUMERIC(MACRO) \
MACRO(u8, std::uint8_t) \
MACRO(u16, std::uint16_t) \
MACRO(u32, std::uint32_t) \
MACRO(u64, std::uint64_t) \
MACRO(i8, std::int8_t) \
MACRO(i16, std::int16_t) \
MACRO(i32, std::int32_t) \
MACRO(i64, std::int64_t) \
MACRO(f32, float) \
MACRO(f64, double)
#define FOR_EACH_STD_VECTOR(MACRO) \
FOR_EACH_NUMERIC(MACRO) \
MACRO(usize, std::size_t) \
MACRO(isize, rust::isize) \
MACRO(string, std::string)
#define FOR_EACH_RUST_VEC(MACRO) \
FOR_EACH_NUMERIC(MACRO) \
MACRO(bool, bool) \
MACRO(char, char) \
MACRO(string, rust::String)
#define FOR_EACH_SHARED_PTR(MACRO) \
FOR_EACH_NUMERIC(MACRO) \
MACRO(bool, bool) \
MACRO(usize, std::size_t) \
MACRO(isize, rust::isize) \
MACRO(string, std::string)
extern "C" {
FOR_EACH_STD_VECTOR(STD_VECTOR_OPS)
FOR_EACH_RUST_VEC(RUST_VEC_EXTERNS)
FOR_EACH_SHARED_PTR(SHARED_PTR_OPS)
} // extern "C"
namespace rust {
inline namespace cxxbridge1 {
FOR_EACH_RUST_VEC(RUST_VEC_OPS)
} // namespace cxxbridge1
} // namespace rust