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BunString.cpp
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BunString.cpp
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#include "root.h"
#include "headers-handwritten.h"
#include <JavaScriptCore/JSCJSValueInlines.h>
#include "helpers.h"
#include "simdutf.h"
#include <wtf/Seconds.h>
#include <wtf/text/ExternalStringImpl.h>
#include "GCDefferalContext.h"
#include <JavaScriptCore/JSONObject.h>
#include <wtf/text/AtomString.h>
using namespace JSC;
extern "C" BunString BunString__fromBytes(const char* bytes, size_t length);
extern "C" bool Bun__WTFStringImpl__hasPrefix(const WTF::StringImpl* impl, const char* bytes, size_t length)
{
return impl->startsWith(bytes, length);
}
extern "C" void Bun__WTFStringImpl__deref(WTF::StringImpl* impl)
{
impl->deref();
}
extern "C" void Bun__WTFStringImpl__ref(WTF::StringImpl* impl)
{
impl->ref();
}
extern "C" bool BunString__fromJS(JSC::JSGlobalObject* globalObject, JSC::EncodedJSValue encodedValue, BunString* bunString)
{
JSC::JSValue value = JSC::JSValue::decode(encodedValue);
*bunString = Bun::toString(globalObject, value);
return bunString->tag != BunStringTag::Dead;
}
extern "C" BunString BunString__createAtom(const char* bytes, size_t length)
{
if (simdutf::validate_ascii(bytes, length)) {
auto atom = makeAtomString(String(StringImpl::createWithoutCopying(bytes, length)));
atom.impl()->ref();
return { BunStringTag::WTFStringImpl, { .wtf = atom.impl() } };
}
return { BunStringTag::Dead, {} };
}
namespace Bun {
JSC::JSValue toJS(JSC::JSGlobalObject* globalObject, BunString bunString)
{
if (bunString.tag == BunStringTag::Empty || bunString.tag == BunStringTag::Dead) {
return JSValue(JSC::jsEmptyString(globalObject->vm()));
}
if (bunString.tag == BunStringTag::WTFStringImpl) {
#if BUN_DEBUG
if (bunString.tag == BunStringTag::WTFStringImpl) {
RELEASE_ASSERT(bunString.impl.wtf->refCount() > 0);
}
#endif
return JSValue(jsString(globalObject->vm(), String(bunString.impl.wtf)));
}
if (bunString.tag == BunStringTag::StaticZigString) {
return JSValue(jsString(globalObject->vm(), Zig::toStringStatic(bunString.impl.zig)));
}
return JSValue(Zig::toJSStringGC(bunString.impl.zig, globalObject));
}
JSC::JSValue toJS(JSC::JSGlobalObject* globalObject, BunString bunString, size_t length)
{
#if BUN_DEBUG
if (bunString.tag == BunStringTag::WTFStringImpl) {
RELEASE_ASSERT(bunString.impl.wtf->refCount() > 0);
}
#endif
return jsSubstring(globalObject, jsUndefined(), Bun::toWTFString(bunString), 0, length);
}
BunString toString(const char* bytes, size_t length)
{
return BunString__fromBytes(bytes, length);
}
WTF::String toWTFString(const BunString& bunString)
{
if (bunString.tag == BunStringTag::ZigString) {
if (Zig::isTaggedUTF8Ptr(bunString.impl.zig.ptr)) {
return Zig::toStringCopy(bunString.impl.zig);
} else {
return Zig::toString(bunString.impl.zig);
}
} else if (bunString.tag == BunStringTag::StaticZigString) {
return Zig::toStringStatic(bunString.impl.zig);
}
if (bunString.tag == BunStringTag::WTFStringImpl) {
#if BUN_DEBUG
RELEASE_ASSERT(bunString.impl.wtf->refCount() > 0);
#endif
return WTF::String(bunString.impl.wtf);
}
return WTF::String();
}
BunString fromJS(JSC::JSGlobalObject* globalObject, JSValue value)
{
JSC::JSString* str = value.toStringOrNull(globalObject);
if (UNLIKELY(!str)) {
return { BunStringTag::Dead };
}
if (str->length() == 0) {
return { BunStringTag::Empty };
}
auto wtfString = str->value(globalObject);
return { BunStringTag::WTFStringImpl, { .wtf = wtfString.impl() } };
}
extern "C" void BunString__toThreadSafe(BunString* str)
{
if (str->tag == BunStringTag::WTFStringImpl) {
auto impl = str->impl.wtf->isolatedCopy();
if (impl.ptr() != str->impl.wtf) {
impl->ref();
str->impl.wtf = &impl.leakRef();
}
}
}
BunString toString(JSC::JSGlobalObject* globalObject, JSValue value)
{
return fromJS(globalObject, value);
}
BunString toStringRef(JSC::JSGlobalObject* globalObject, JSValue value)
{
auto str = value.toWTFString(globalObject);
if (str.isEmpty()) {
return { BunStringTag::Empty };
}
str.impl()->ref();
return { BunStringTag::WTFStringImpl, { .wtf = str.impl() } };
}
BunString toString(WTF::String& wtfString)
{
if (wtfString.isEmpty())
return { BunStringTag::Empty };
return { BunStringTag::WTFStringImpl, { .wtf = wtfString.impl() } };
}
BunString toString(const WTF::String& wtfString)
{
if (wtfString.isEmpty())
return { BunStringTag::Empty };
return { BunStringTag::WTFStringImpl, { .wtf = wtfString.impl() } };
}
BunString toString(WTF::StringImpl* wtfString)
{
if (wtfString->isEmpty())
return { BunStringTag::Empty };
return { BunStringTag::WTFStringImpl, { .wtf = wtfString } };
}
BunString toStringRef(WTF::String& wtfString)
{
if (wtfString.isEmpty())
return { BunStringTag::Empty };
wtfString.impl()->ref();
return { BunStringTag::WTFStringImpl, { .wtf = wtfString.impl() } };
}
BunString toStringRef(const WTF::String& wtfString)
{
if (wtfString.isEmpty())
return { BunStringTag::Empty };
wtfString.impl()->ref();
return { BunStringTag::WTFStringImpl, { .wtf = wtfString.impl() } };
}
BunString toStringRef(WTF::StringImpl* wtfString)
{
if (wtfString->isEmpty())
return { BunStringTag::Empty };
wtfString->ref();
return { BunStringTag::WTFStringImpl, { .wtf = wtfString } };
}
}
extern "C" JSC::EncodedJSValue BunString__toJS(JSC::JSGlobalObject* globalObject, BunString* bunString)
{
return JSValue::encode(Bun::toJS(globalObject, *bunString));
}
extern "C" JSC::EncodedJSValue BunString__toJSWithLength(JSC::JSGlobalObject* globalObject, BunString* bunString, size_t length)
{
return JSValue::encode(Bun::toJS(globalObject, *bunString, length));
}
extern "C" BunString BunString__fromUTF16Unitialized(size_t length)
{
unsigned utf16Length = length;
UChar* ptr;
auto impl = WTF::StringImpl::createUninitialized(utf16Length, ptr);
if (UNLIKELY(!ptr))
return { BunStringTag::Dead };
return { BunStringTag::WTFStringImpl, { .wtf = &impl.leakRef() } };
}
extern "C" BunString BunString__fromLatin1Unitialized(size_t length)
{
unsigned latin1Length = length;
LChar* ptr;
auto impl = WTF::StringImpl::createUninitialized(latin1Length, ptr);
if (UNLIKELY(!ptr))
return { BunStringTag::Dead };
return { BunStringTag::WTFStringImpl, { .wtf = &impl.leakRef() } };
}
extern "C" BunString BunString__fromUTF8(const char* bytes, size_t length)
{
if (simdutf::validate_utf8(bytes, length)) {
size_t u16Length = simdutf::utf16_length_from_utf8(bytes, length);
UChar* ptr;
auto impl = WTF::StringImpl::createUninitialized(static_cast<unsigned int>(u16Length), ptr);
RELEASE_ASSERT(simdutf::convert_utf8_to_utf16(bytes, length, ptr) == u16Length);
impl->ref();
return { BunStringTag::WTFStringImpl, { .wtf = &impl.leakRef() } };
}
auto str = WTF::String::fromUTF8ReplacingInvalidSequences(reinterpret_cast<const LChar*>(bytes), length);
str.impl()->ref();
return Bun::toString(str);
}
extern "C" BunString BunString__fromLatin1(const char* bytes, size_t length)
{
return { BunStringTag::WTFStringImpl, { .wtf = &WTF::StringImpl::create(bytes, length).leakRef() } };
}
extern "C" BunString BunString__fromBytes(const char* bytes, size_t length)
{
if (simdutf::validate_ascii(bytes, length)) {
return BunString__fromLatin1(bytes, length);
}
return BunString__fromUTF8(bytes, length);
}
extern "C" BunString BunString__createExternal(const char* bytes, size_t length, bool isLatin1, void* ctx, void (*callback)(void* arg0, void* arg1, size_t arg2))
{
Ref<WTF::ExternalStringImpl> impl = isLatin1 ? WTF::ExternalStringImpl::create(reinterpret_cast<const LChar*>(bytes), length, ctx, callback) :
WTF::ExternalStringImpl::create(reinterpret_cast<const UChar*>(bytes), length, ctx, callback);
return { BunStringTag::WTFStringImpl, { .wtf = &impl.leakRef() } };
}
extern "C" JSC::EncodedJSValue BunString__toJSON(
JSC::JSGlobalObject* globalObject,
BunString* bunString)
{
JSC::JSValue result = JSC::JSONParse(globalObject, Bun::toWTFString(*bunString));
if (!result) {
result = JSC::JSValue(JSC::createSyntaxError(globalObject, "Failed to parse JSON"_s));
}
return JSC::JSValue::encode(result);
}
extern "C" JSC::EncodedJSValue BunString__createArray(
JSC::JSGlobalObject* globalObject,
const BunString* ptr, size_t length)
{
if (length == 0)
return JSValue::encode(JSC::constructEmptyArray(globalObject, nullptr));
auto& vm = globalObject->vm();
auto throwScope = DECLARE_THROW_SCOPE(vm);
// Using tryCreateUninitialized here breaks stuff..
// https://github.com/oven-sh/bun/issues/3931
JSC::JSArray* array = constructEmptyArray(globalObject, nullptr, length);
if (!array) {
JSC::throwOutOfMemoryError(globalObject, throwScope);
RELEASE_AND_RETURN(throwScope, JSValue::encode(JSC::JSValue()));
}
for (size_t i = 0; i < length; ++i) {
array->putDirectIndex(globalObject, i, Bun::toJS(globalObject, *ptr++));
}
return JSValue::encode(array);
}
extern "C" void BunString__toWTFString(BunString* bunString)
{
if (bunString->tag == BunStringTag::ZigString) {
if (Zig::isTaggedExternalPtr(bunString->impl.zig.ptr)) {
bunString->impl.wtf = Zig::toString(bunString->impl.zig).impl();
} else {
bunString->impl.wtf = Zig::toStringCopy(bunString->impl.zig).impl();
}
bunString->tag = BunStringTag::WTFStringImpl;
} else if (bunString->tag == BunStringTag::StaticZigString) {
bunString->impl.wtf = Zig::toStringStatic(bunString->impl.zig).impl();
bunString->tag = BunStringTag::WTFStringImpl;
}
}
extern "C" BunString URL__getFileURLString(BunString* filePath)
{
return Bun::toStringRef(WTF::URL::fileURLWithFileSystemPath(Bun::toWTFString(*filePath)).stringWithoutFragmentIdentifier());
}
extern "C" WTF::URL* URL__fromJS(EncodedJSValue encodedValue, JSC::JSGlobalObject* globalObject)
{
auto throwScope = DECLARE_THROW_SCOPE(globalObject->vm());
JSC::JSValue value = JSC::JSValue::decode(encodedValue);
auto str = value.toWTFString(globalObject);
RETURN_IF_EXCEPTION(throwScope, nullptr);
if (str.isEmpty()) {
return nullptr;
}
auto url = WTF::URL(str);
if (!url.isValid() || url.isNull())
return nullptr;
return new WTF::URL(WTFMove(url));
}
extern "C" BunString URL__getHrefFromJS(EncodedJSValue encodedValue, JSC::JSGlobalObject* globalObject)
{
auto throwScope = DECLARE_THROW_SCOPE(globalObject->vm());
JSC::JSValue value = JSC::JSValue::decode(encodedValue);
auto str = value.toWTFString(globalObject);
RETURN_IF_EXCEPTION(throwScope, { BunStringTag::Dead });
if (str.isEmpty()) {
return { BunStringTag::Dead };
}
auto url = WTF::URL(str);
if (!url.isValid() || url.isEmpty())
return { BunStringTag::Dead };
return Bun::toStringRef(url.string());
}
extern "C" BunString URL__getHref(BunString* input)
{
auto&& str = Bun::toWTFString(*input);
auto url = WTF::URL(str);
if (!url.isValid() || url.isEmpty())
return { BunStringTag::Dead };
return Bun::toStringRef(url.string());
}
extern "C" BunString URL__pathFromFileURL(BunString* input)
{
auto&& str = Bun::toWTFString(*input);
auto url = WTF::URL(str);
if (!url.isValid() || url.isEmpty())
return { BunStringTag::Dead };
return Bun::toStringRef(url.fileSystemPath());
}
extern "C" BunString URL__getHrefJoin(BunString* baseStr, BunString* relativeStr)
{
auto base = Bun::toWTFString(*baseStr);
auto relative = Bun::toWTFString(*relativeStr);
auto url = WTF::URL(WTF::URL(base), relative);
if (!url.isValid() || url.isEmpty())
return { BunStringTag::Dead };
return Bun::toStringRef(url.string());
}
extern "C" WTF::URL* URL__fromString(BunString* input)
{
auto&& str = Bun::toWTFString(*input);
auto url = WTF::URL(str);
if (!url.isValid())
return nullptr;
return new WTF::URL(WTFMove(url));
}
extern "C" BunString URL__protocol(WTF::URL* url)
{
return Bun::toStringRef(url->protocol().toStringWithoutCopying());
}
extern "C" void URL__deinit(WTF::URL* url)
{
delete url;
}
extern "C" BunString URL__href(WTF::URL* url)
{
return Bun::toStringRef(url->string());
}
extern "C" BunString URL__username(WTF::URL* url)
{
return Bun::toStringRef(url->user());
}
extern "C" BunString URL__password(WTF::URL* url)
{
return Bun::toStringRef(url->password());
}
extern "C" BunString URL__search(WTF::URL* url)
{
return Bun::toStringRef(url->query().toStringWithoutCopying());
}
extern "C" BunString URL__host(WTF::URL* url)
{
return Bun::toStringRef(url->host().toStringWithoutCopying());
}
extern "C" BunString URL__hostname(WTF::URL* url)
{
return Bun::toStringRef(url->hostAndPort());
}
extern "C" uint32_t URL__port(WTF::URL* url)
{
auto port = url->port();
if (port.has_value()) {
return port.value();
}
return std::numeric_limits<uint32_t>::max();
}
extern "C" BunString URL__pathname(WTF::URL* url)
{
return Bun::toStringRef(url->path().toStringWithoutCopying());
}
size_t BunString::utf8ByteLength(const WTF::String& str)
{
if (str.isEmpty())
return 0;
if (str.is8Bit()) {
return simdutf::utf8_length_from_latin1(reinterpret_cast<const char*>(str.characters8()), static_cast<size_t>(str.length()));
} else {
return simdutf::utf8_length_from_utf16(reinterpret_cast<const char16_t*>(str.characters16()), static_cast<size_t>(str.length()));
}
}