1 files changed, 105 insertions, 0 deletions
diff --git a/xpcom/reflect/xptinfo/xptinfo.cpp b/xpcom/reflect/xptinfo/xptinfo.cpp
new file mode 100644
index 0000000000..c44e97cad4
--- /dev/null
+++ b/xpcom/reflect/xptinfo/xptinfo.cpp
@@ -0,0 +1,105 @@
+/* -*- 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 https://mozilla.org/MPL/2.0/. */
+
+#include "xptinfo.h"
+#include "nsISupports.h"
+#include "mozilla/dom/DOMJSClass.h"
+#include "mozilla/dom/BindingUtils.h"
+#include "mozilla/ArrayUtils.h"
+
+#include "jsfriendapi.h"
+#include "js/Symbol.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace xpt::detail;
+
+////////////////////////////////////
+// Constant Lookup Helper Methods //
+////////////////////////////////////
+
+bool nsXPTInterfaceInfo::HasAncestor(const nsIID& aIID) const {
+  for (const auto* info = this; info; info = info->GetParent()) {
+    if (info->IID() == aIID) {
+      return true;
+    }
+  }
+  return false;
+}
+
+const nsXPTConstantInfo& nsXPTInterfaceInfo::Constant(uint16_t aIndex) const {
+  MOZ_ASSERT(aIndex < ConstantCount());
+
+  if (const nsXPTInterfaceInfo* pi = GetParent()) {
+    if (aIndex < pi->ConstantCount()) {
+      return pi->Constant(aIndex);
+    }
+    aIndex -= pi->ConstantCount();
+  }
+
+  return xpt::detail::GetConstant(mConsts + aIndex);
+}
+
+const nsXPTMethodInfo& nsXPTInterfaceInfo::Method(uint16_t aIndex) const {
+  MOZ_ASSERT(aIndex < MethodCount());
+
+  if (const nsXPTInterfaceInfo* pi = GetParent()) {
+    if (aIndex < pi->MethodCount()) {
+      return pi->Method(aIndex);
+    }
+    aIndex -= pi->MethodCount();
+  }
+
+  return xpt::detail::GetMethod(mMethods + aIndex);
+}
+
+nsresult nsXPTInterfaceInfo::GetMethodInfo(
+    uint16_t aIndex, const nsXPTMethodInfo** aInfo) const {
+  *aInfo = aIndex < MethodCount() ? &Method(aIndex) : nullptr;
+  return *aInfo ? NS_OK : NS_ERROR_FAILURE;
+}
+
+nsresult nsXPTInterfaceInfo::GetConstant(uint16_t aIndex,
+                                         JS::MutableHandle<JS::Value> aConstant,
+                                         char** aName) const {
+  if (aIndex < ConstantCount()) {
+    aConstant.set(Constant(aIndex).JSValue());
+    *aName = moz_xstrdup(Constant(aIndex).Name());
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+////////////////////////////////////
+// nsXPTMethodInfo symbol helpers //
+////////////////////////////////////
+
+const char* nsXPTMethodInfo::SymbolDescription() const {
+  switch (GetSymbolCode()) {
+#define XPC_WELL_KNOWN_SYMBOL_DESCR_CASE(name) \
+  case JS::SymbolCode::name:                   \
+    return #name;
+    JS_FOR_EACH_WELL_KNOWN_SYMBOL(XPC_WELL_KNOWN_SYMBOL_DESCR_CASE)
+#undef XPC_WELL_KNOWN_SYMBOL_DESCR_CASE
+
+    default:
+      return "";
+  }
+}
+
+bool nsXPTMethodInfo::GetId(JSContext* aCx, jsid& aId) const {
+  if (IsSymbol()) {
+    aId = JS::PropertyKey::Symbol(GetSymbol(aCx));
+    return true;
+  }
+
+  JSString* str = JS_AtomizeString(aCx, Name());
+  if (!str) {
+    return false;
+  }
+  aId = JS::PropertyKey::NonIntAtom(str);
+  return true;
+}