/* -*- 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;
}