/
InternalModuleRegistry.cpp
170 lines (147 loc) · 8.45 KB
/
InternalModuleRegistry.cpp
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#include "InternalModuleRegistry.h"
#include "ZigGlobalObject.h"
#include <JavaScriptCore/BuiltinUtils.h>
#include <JavaScriptCore/JSFunction.h>
#include <JavaScriptCore/LazyProperty.h>
#include <JavaScriptCore/LazyPropertyInlines.h>
#include <JavaScriptCore/VMTrapsInlines.h>
#include <JavaScriptCore/JSModuleLoader.h>
#include "InternalModuleRegistryConstants.h"
namespace Bun {
extern "C" bool BunTest__shouldGenerateCodeCoverage(BunString sourceURL);
extern "C" void ByteRangeMapping__generate(BunString sourceURL, BunString code, int sourceID);
static void maybeAddCodeCoverage(JSC::VM& vm, const JSC::SourceCode& code)
{
#if ASSERT_ENABLED
bool isCodeCoverageEnabled = !!vm.controlFlowProfiler();
bool shouldGenerateCodeCoverage = isCodeCoverageEnabled && BunTest__shouldGenerateCodeCoverage(Bun::toString(code.provider()->sourceURL()));
if (shouldGenerateCodeCoverage) {
ByteRangeMapping__generate(Bun::toString(code.provider()->sourceURL()), Bun::toString(code.provider()->source().toStringWithoutCopying()), code.provider()->asID());
}
#endif
}
// The `INTERNAL_MODULE_REGISTRY_GENERATE` macro handles inlining code to compile and run a
// JS builtin that acts as a module. In debug mode, we use a different implementation that reads
// from the developer's filesystem. This allows reloading code without recompiling bindings.
#define INTERNAL_MODULE_REGISTRY_GENERATE_(globalObject, vm, SOURCE, moduleName, urlString) \
auto throwScope = DECLARE_THROW_SCOPE(vm); \
auto&& origin = SourceOrigin(WTF::URL(urlString)); \
SourceCode source = JSC::makeSource(SOURCE, origin, \
JSC::SourceTaintedOrigin::Untainted, \
moduleName); \
maybeAddCodeCoverage(vm, source); \
JSFunction* func \
= JSFunction::create( \
vm, \
createBuiltinExecutable( \
vm, source, \
Identifier(), \
ImplementationVisibility::Public, \
ConstructorKind::None, \
ConstructAbility::CannotConstruct, \
InlineAttribute::None) \
->link(vm, nullptr, source), \
static_cast<JSC::JSGlobalObject*>(globalObject)); \
\
RETURN_IF_EXCEPTION(throwScope, {}); \
\
JSC::MarkedArgumentBuffer argList; \
JSValue result = JSC::profiledCall( \
globalObject, \
ProfilingReason::Other, \
func, \
JSC::getCallData(func), \
globalObject, JSC::MarkedArgumentBuffer()); \
\
RETURN_IF_EXCEPTION(throwScope, {}); \
ASSERT_INTERNAL_MODULE(result, moduleName); \
return result;
#if BUN_DEBUG
#define ASSERT_INTERNAL_MODULE(result, moduleName) \
if (!result || !result.isCell() || !jsDynamicCast<JSObject*>(result)) { \
printf("Expected \"%s\" to export a JSObject. Bun is going to crash.", moduleName.utf8().data()); \
}
JSValue initializeInternalModuleFromDisk(
JSGlobalObject* globalObject,
VM& vm,
WTF::String moduleName,
WTF::String fileBase,
WTF::String urlString)
{
WTF::String file = makeString(BUN_DYNAMIC_JS_LOAD_PATH, "/"_s, fileBase);
if (auto contents = WTF::FileSystemImpl::readEntireFile(file)) {
auto string = WTF::String::fromUTF8(contents.value());
INTERNAL_MODULE_REGISTRY_GENERATE_(globalObject, vm, string, moduleName, urlString);
} else {
printf("\nFATAL: bun-debug failed to load bundled version of \"%s\" at \"%s\" (was it deleted?)\n"
"Please re-compile Bun to continue.\n\n",
moduleName.utf8().data(), file.utf8().data());
CRASH();
}
}
#define INTERNAL_MODULE_REGISTRY_GENERATE(globalObject, vm, moduleId, filename, SOURCE, urlString) \
return initializeInternalModuleFromDisk(globalObject, vm, moduleId, filename, urlString)
#else
#define ASSERT_INTERNAL_MODULE(result, moduleName) \
{ \
}
#define INTERNAL_MODULE_REGISTRY_GENERATE(globalObject, vm, moduleId, filename, SOURCE, urlString) \
INTERNAL_MODULE_REGISTRY_GENERATE_(globalObject, vm, SOURCE, moduleId, urlString)
#endif
const ClassInfo InternalModuleRegistry::s_info = { "InternalModuleRegistry"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(InternalModuleRegistry) };
InternalModuleRegistry::InternalModuleRegistry(VM& vm, Structure* structure)
: Base(vm, structure)
{
}
template<typename Visitor>
void InternalModuleRegistry::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
auto* thisObject = jsCast<InternalModuleRegistry*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
}
DEFINE_VISIT_CHILDREN_WITH_MODIFIER(JS_EXPORT_PRIVATE, InternalModuleRegistry);
InternalModuleRegistry* InternalModuleRegistry::create(VM& vm, Structure* structure)
{
InternalModuleRegistry* registry = new (NotNull, allocateCell<InternalModuleRegistry>(vm)) InternalModuleRegistry(vm, structure);
registry->finishCreation(vm);
return registry;
}
void InternalModuleRegistry::finishCreation(VM& vm)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
for (uint8_t i = 0; i < BUN_INTERNAL_MODULE_COUNT; i++) {
this->internalField(static_cast<Field>(i)).set(vm, this, jsUndefined());
}
}
Structure* InternalModuleRegistry::createStructure(VM& vm, JSGlobalObject* globalObject)
{
return Structure::create(vm, globalObject, jsNull(), TypeInfo(InternalFieldTupleType, StructureFlags), info(), 0, 0);
}
JSValue InternalModuleRegistry::requireId(JSGlobalObject* globalObject, VM& vm, Field id)
{
auto value = internalField(id).get();
if (!value || value.isUndefined()) {
value = createInternalModuleById(globalObject, vm, id);
internalField(id).set(vm, this, value);
}
return value;
}
#include "InternalModuleRegistry+createInternalModuleById.h"
// This is called like @getInternalField(@internalModuleRegistry, 1) ?? @createInternalModuleById(1)
// so we want to write it to the internal field when loaded.
JSC_DEFINE_HOST_FUNCTION(InternalModuleRegistry::jsCreateInternalModuleById, (JSGlobalObject * lexicalGlobalObject, CallFrame* callframe))
{
auto& vm = lexicalGlobalObject->vm();
auto throwScope = DECLARE_THROW_SCOPE(vm);
auto id = callframe->argument(0).toUInt32(lexicalGlobalObject);
auto registry = jsCast<Zig::GlobalObject*>(lexicalGlobalObject)->internalModuleRegistry();
auto mod = registry->createInternalModuleById(lexicalGlobalObject, vm, static_cast<Field>(id));
RETURN_IF_EXCEPTION(throwScope, {});
registry->internalField(static_cast<Field>(id)).set(vm, registry, mod);
return JSValue::encode(mod);
}
} // namespace Bun
#undef INTERNAL_MODULE_REGISTRY_GENERATE_
#undef INTERNAL_MODULE_REGISTRY_GENERATE