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#include "root.h"
#include "headers-handwritten.h"
#include "JavaScriptCore/JSCJSValueInlines.h"
#include "helpers.h"
#include "simdutf.h"
#include "wtf/text/ExternalStringImpl.h"
#include "GCDefferalContext.h"
using namespace JSC;
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;
}
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) {
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));
}
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) {
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() } };
}
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 } };
}
BunString fromString(WTF::String& wtfString)
{
if (wtfString.isEmpty())
return { BunStringTag::Empty };
return { BunStringTag::WTFStringImpl, { .wtf = wtfString.impl() } };
}
BunString fromString(WTF::StringImpl* wtfString)
{
if (wtfString->isEmpty())
return { BunStringTag::Empty };
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" BunString BunString__fromUTF16Unitialized(size_t length)
{
unsigned utf16Length = length;
UChar* ptr;
auto impl = WTF::StringImpl::createUninitialized(utf16Length, ptr);
if (UNLIKELY(!ptr))
return { BunStringTag::Dead };
impl->ref();
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 };
impl->ref();
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::fromString(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" 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);
// We must do this or Bun.gc(true) in a loop creating large arrays of strings will crash due to GC'ing.
MarkedArgumentBuffer arguments;
JSC::ObjectInitializationScope scope(vm);
GCDeferralContext context(vm);
arguments.fill(length, [&](JSC::JSValue* value) {
const BunString* end = ptr + length;
while (ptr != end) {
*value++ = Bun::toJS(globalObject, *ptr++);
}
});
if (JSC::JSArray* array = JSC::JSArray::tryCreateUninitializedRestricted(
scope,
globalObject->arrayStructureForIndexingTypeDuringAllocation(JSC::ArrayWithContiguous),
length)) {
for (size_t i = 0; i < length; ++i) {
array->initializeIndex(scope, i, arguments.at(i));
}
return JSValue::encode(array);
}
JSC::throwOutOfMemoryError(globalObject, throwScope);
RELEASE_AND_RETURN(throwScope, JSValue::encode(JSC::JSValue()));
}
extern "C" void BunString__toWTFString(BunString* bunString)
{
if (bunString->tag == BunStringTag::ZigString) {
if (Zig::isTaggedUTF8Ptr(bunString->impl.zig.ptr)) {
bunString->impl.wtf = Zig::toStringCopy(bunString->impl.zig).impl();
} else {
bunString->impl.wtf = Zig::toString(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;
}
}
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