Support using `WTF::StringImpl` from Zig (#3279)

* Fix `make headers`

* [JS parser] Fix bug with printing non-ascii import paths in ascii mode

* Introduce `bun.String`

* Add test for non-ascii imports & entry points

* Add comment

* Fix build issue

* Support HTTP server

* Make it print the same

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 20 insertions, 1 deletions

diff --git a/src/bun.js/bindings/helpers.h b/src/bun.js/bindings/helpers.h
index 8a96a94af..402807f3d 100644
--- a/src/bun.js/bindings/helpers.h
+++ b/src/bun.js/bindings/helpers.h
@@ -84,7 +84,7 @@ namespace Zig {
 static const unsigned char* untag(const unsigned char* ptr)
 {
     return reinterpret_cast<const unsigned char*>(
-        ((reinterpret_cast<uintptr_t>(ptr) & ~(static_cast<uint64_t>(1) << 63) & ~(static_cast<uint64_t>(1) << 62)) & ~(static_cast<uint64_t>(1) << 61)));
+        (((reinterpret_cast<uintptr_t>(ptr) & ~(static_cast<uint64_t>(1) << 63) & ~(static_cast<uint64_t>(1) << 62)) & ~(static_cast<uint64_t>(1) << 61)) & ~(static_cast<uint64_t>(1) << 60)));
 }
 
 static void* untagVoid(const unsigned char* ptr)
@@ -245,6 +245,8 @@ static const JSC::JSValue toJSStringValueGC(ZigString str, JSC::JSGlobalObject*
 static const ZigString ZigStringEmpty = ZigString { nullptr, 0 };
 static const unsigned char __dot_char = '.';
 static const ZigString ZigStringCwd = ZigString { &__dot_char, 1 };
+static const BunString BunStringCwd = BunString { BunStringTag::StaticZigString, ZigStringCwd };
+static const BunString BunStringEmpty = BunString { BunStringTag::Empty, nullptr };
 
 static const unsigned char* taggedUTF16Ptr(const UChar* ptr)
 {
@@ -330,6 +332,23 @@ static ZigString toZigString(JSC::JSValue val, JSC::JSGlobalObject* global)
     return toZigString(str);
 }
 
+static const WTF::String toStringStatic(ZigString str)
+{
+    if (str.len == 0 || str.ptr == nullptr) {
+        return WTF::String();
+    }
+    if (UNLIKELY(isTaggedUTF8Ptr(str.ptr))) {
+        abort();
+    }
+
+    if (isTaggedUTF16Ptr(str.ptr)) {
+        return WTF::String(WTF::ExternalStringImpl::createStatic(reinterpret_cast<const UChar*>(untag(str.ptr)), str.len));
+    }
+
+    return WTF::String(WTF::ExternalStringImpl::createStatic(
+        reinterpret_cast<const LChar*>(untag(str.ptr)), str.len));
+}
+
 static JSC::JSValue getErrorInstance(const ZigString* str, JSC__JSGlobalObject* globalObject)
 {
     JSC::VM& vm = globalObject->vm();