Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 160 insertions, 0 deletions

diff --git a/js/src/vm/JSFunction-inl.h b/js/src/vm/JSFunction-inl.h
new file mode 100644
index 0000000000..cbf821b720
--- /dev/null
+++ b/js/src/vm/JSFunction-inl.h
@@ -0,0 +1,160 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef vm_JSFunction_inl_h
+#define vm_JSFunction_inl_h
+
+#include "vm/JSFunction.h"
+
+#include "gc/GCProbes.h"
+
+#include "gc/ObjectKind-inl.h"
+#include "vm/JSContext-inl.h"
+#include "vm/JSObject-inl.h"
+#include "vm/NativeObject-inl.h"
+
+namespace js {
+
+inline const char* GetFunctionNameBytes(JSContext* cx, JSFunction* fun,
+                                        UniqueChars* bytes) {
+  if (fun->isAccessorWithLazyName()) {
+    JSAtom* name = fun->getAccessorNameForLazy(cx);
+    if (!name) {
+      return nullptr;
+    }
+
+    *bytes = StringToNewUTF8CharsZ(cx, *name);
+    return bytes->get();
+  }
+
+  if (JSAtom* name = fun->fullExplicitName()) {
+    *bytes = StringToNewUTF8CharsZ(cx, *name);
+    return bytes->get();
+  }
+
+  return "anonymous";
+}
+
+} /* namespace js */
+
+/* static */
+inline JSFunction* JSFunction::create(JSContext* cx, js::gc::AllocKind kind,
+                                      js::gc::Heap heap,
+                                      js::Handle<js::SharedShape*> shape) {
+  MOZ_ASSERT(kind == js::gc::AllocKind::FUNCTION ||
+             kind == js::gc::AllocKind::FUNCTION_EXTENDED);
+
+  debugCheckNewObject(shape, kind, heap);
+
+  const JSClass* clasp = shape->getObjectClass();
+  MOZ_ASSERT(clasp->isNativeObject());
+  MOZ_ASSERT(clasp->isJSFunction());
+  MOZ_ASSERT_IF(kind == js::gc::AllocKind::FUNCTION,
+                clasp == js::FunctionClassPtr);
+  MOZ_ASSERT_IF(kind == js::gc::AllocKind::FUNCTION_EXTENDED,
+                clasp == js::FunctionExtendedClassPtr);
+
+  MOZ_ASSERT(calculateDynamicSlots(shape->numFixedSlots(), shape->slotSpan(),
+                                   clasp) == 0);
+
+  NativeObject* nobj = cx->newCell<NativeObject>(kind, heap, clasp);
+  if (!nobj) {
+    return nullptr;
+  }
+
+  nobj->initShape(shape);
+
+  nobj->initEmptyDynamicSlots();
+  nobj->setEmptyElements();
+
+  JSFunction* fun = static_cast<JSFunction*>(nobj);
+  fun->initFixedSlots(JSCLASS_RESERVED_SLOTS(clasp));
+  fun->initFlagsAndArgCount();
+  fun->initFixedSlot(NativeJitInfoOrInterpretedScriptSlot,
+                     JS::PrivateValue(nullptr));
+
+  if (kind == js::gc::AllocKind::FUNCTION_EXTENDED) {
+    fun->setFlags(FunctionFlags::EXTENDED);
+  }
+
+  MOZ_ASSERT(!clasp->shouldDelayMetadataBuilder(),
+             "Function has no extra data hanging off it, that wouldn't be "
+             "allocated at this point, that would require delaying the "
+             "building of metadata for it");
+  if (MOZ_UNLIKELY(cx->realm()->hasAllocationMetadataBuilder())) {
+    fun = SetNewObjectMetadata(cx, fun);
+  }
+
+  js::gc::gcprobes::CreateObject(fun);
+
+  return fun;
+}
+
+/* static */
+inline bool JSFunction::getLength(JSContext* cx, js::HandleFunction fun,
+                                  uint16_t* length) {
+  if (fun->isNativeFun()) {
+    *length = fun->nargs();
+    return true;
+  }
+
+  JSScript* script = getOrCreateScript(cx, fun);
+  if (!script) {
+    return false;
+  }
+
+  *length = script->funLength();
+  return true;
+}
+
+/* static */
+inline bool JSFunction::getUnresolvedLength(JSContext* cx,
+                                            js::HandleFunction fun,
+                                            uint16_t* length) {
+  MOZ_ASSERT(!IsInternalFunctionObject(*fun));
+  MOZ_ASSERT(!fun->hasResolvedLength());
+
+  return JSFunction::getLength(cx, fun, length);
+}
+
+inline JSAtom* JSFunction::getUnresolvedName(JSContext* cx) {
+  if (isAccessorWithLazyName()) {
+    return getAccessorNameForLazy(cx);
+  }
+
+  return infallibleGetUnresolvedName(cx);
+}
+
+inline JSAtom* JSFunction::infallibleGetUnresolvedName(JSContext* cx) {
+  MOZ_ASSERT(!IsInternalFunctionObject(*this));
+  MOZ_ASSERT(!isAccessorWithLazyName());
+  MOZ_ASSERT(!hasResolvedName());
+
+  if (JSAtom* name = fullExplicitOrInferredName()) {
+    return name;
+  }
+
+  return cx->names().empty_;
+}
+
+/* static */ inline bool JSFunction::getAllocKindForThis(
+    JSContext* cx, js::HandleFunction func, js::gc::AllocKind& allocKind) {
+  JSScript* script = getOrCreateScript(cx, func);
+  if (!script) {
+    return false;
+  }
+
+  size_t propertyCountEstimate =
+      script->immutableScriptData()->propertyCountEstimate;
+
+  // Choose the alloc assuming at least the default NewObjectKind slots, but
+  // bigger if our estimate shows we need it.
+  allocKind = js::gc::GetGCObjectKind(std::max(
+      js::gc::GetGCKindSlots(js::NewObjectGCKind()), propertyCountEstimate));
+  return true;
+}
+
+#endif /* vm_JSFunction_inl_h */