gecko-dev/xpcom/ds/nsHashPropertyBag.cpp

285 lines
7.1 KiB
C++

/* -*- 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/. */
#include "nsHashPropertyBag.h"
#include "nsArray.h"
#include "nsArrayEnumerator.h"
#include "nsIVariant.h"
#include "nsIProperty.h"
#include "nsVariant.h"
#include "mozilla/Attributes.h"
/*
* nsHashPropertyBagBase implementation.
*/
NS_IMETHODIMP
nsHashPropertyBagBase::HasKey(const nsAString& aName, bool* aResult)
{
*aResult = mPropertyHash.Get(aName, nullptr);
return NS_OK;
}
NS_IMETHODIMP
nsHashPropertyBagBase::Get(const nsAString& aName, nsIVariant** aResult)
{
if (!mPropertyHash.Get(aName, aResult)) {
*aResult = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsHashPropertyBagBase::GetProperty(const nsAString& aName, nsIVariant** aResult)
{
bool isFound = mPropertyHash.Get(aName, aResult);
if (!isFound) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsHashPropertyBagBase::SetProperty(const nsAString& aName, nsIVariant* aValue)
{
if (NS_WARN_IF(!aValue)) {
return NS_ERROR_INVALID_ARG;
}
mPropertyHash.Put(aName, aValue);
return NS_OK;
}
NS_IMETHODIMP
nsHashPropertyBagBase::DeleteProperty(const nsAString& aName)
{
// is it too much to ask for ns*Hashtable to return
// a boolean indicating whether RemoveEntry succeeded
// or not?!?!
bool isFound = mPropertyHash.Get(aName, nullptr);
if (!isFound) {
return NS_ERROR_FAILURE;
}
// then from the hash
mPropertyHash.Remove(aName);
return NS_OK;
}
//
// nsSimpleProperty class and impl; used for GetEnumerator
//
class nsSimpleProperty final : public nsIProperty
{
~nsSimpleProperty() {}
public:
nsSimpleProperty(const nsAString& aName, nsIVariant* aValue)
: mName(aName)
, mValue(aValue)
{
}
NS_DECL_ISUPPORTS
NS_DECL_NSIPROPERTY
protected:
nsString mName;
nsCOMPtr<nsIVariant> mValue;
};
NS_IMPL_ISUPPORTS(nsSimpleProperty, nsIProperty)
NS_IMETHODIMP
nsSimpleProperty::GetName(nsAString& aName)
{
aName.Assign(mName);
return NS_OK;
}
NS_IMETHODIMP
nsSimpleProperty::GetValue(nsIVariant** aValue)
{
NS_IF_ADDREF(*aValue = mValue);
return NS_OK;
}
// end nsSimpleProperty
NS_IMETHODIMP
nsHashPropertyBagBase::GetEnumerator(nsISimpleEnumerator** aResult)
{
nsCOMPtr<nsIMutableArray> propertyArray = nsArray::Create();
if (!propertyArray) {
return NS_ERROR_OUT_OF_MEMORY;
}
for (auto iter = mPropertyHash.Iter(); !iter.Done(); iter.Next()) {
const nsAString& key = iter.Key();
nsIVariant* data = iter.UserData();
nsSimpleProperty* sprop = new nsSimpleProperty(key, data);
propertyArray->AppendElement(sprop, false);
}
return NS_NewArrayEnumerator(aResult, propertyArray);
}
#define IMPL_GETSETPROPERTY_AS(Name, Type) \
NS_IMETHODIMP \
nsHashPropertyBagBase::GetPropertyAs ## Name (const nsAString & prop, Type *_retval) \
{ \
nsIVariant* v = mPropertyHash.GetWeak(prop); \
if (!v) \
return NS_ERROR_NOT_AVAILABLE; \
return v->GetAs ## Name(_retval); \
} \
\
NS_IMETHODIMP \
nsHashPropertyBagBase::SetPropertyAs ## Name (const nsAString & prop, Type value) \
{ \
nsCOMPtr<nsIWritableVariant> var = new nsVariant(); \
var->SetAs ## Name(value); \
return SetProperty(prop, var); \
}
IMPL_GETSETPROPERTY_AS(Int32, int32_t)
IMPL_GETSETPROPERTY_AS(Uint32, uint32_t)
IMPL_GETSETPROPERTY_AS(Int64, int64_t)
IMPL_GETSETPROPERTY_AS(Uint64, uint64_t)
IMPL_GETSETPROPERTY_AS(Double, double)
IMPL_GETSETPROPERTY_AS(Bool, bool)
NS_IMETHODIMP
nsHashPropertyBagBase::GetPropertyAsAString(const nsAString& aProp,
nsAString& aResult)
{
nsIVariant* v = mPropertyHash.GetWeak(aProp);
if (!v) {
return NS_ERROR_NOT_AVAILABLE;
}
return v->GetAsAString(aResult);
}
NS_IMETHODIMP
nsHashPropertyBagBase::GetPropertyAsACString(const nsAString& aProp,
nsACString& aResult)
{
nsIVariant* v = mPropertyHash.GetWeak(aProp);
if (!v) {
return NS_ERROR_NOT_AVAILABLE;
}
return v->GetAsACString(aResult);
}
NS_IMETHODIMP
nsHashPropertyBagBase::GetPropertyAsAUTF8String(const nsAString& aProp,
nsACString& aResult)
{
nsIVariant* v = mPropertyHash.GetWeak(aProp);
if (!v) {
return NS_ERROR_NOT_AVAILABLE;
}
return v->GetAsAUTF8String(aResult);
}
NS_IMETHODIMP
nsHashPropertyBagBase::GetPropertyAsInterface(const nsAString& aProp,
const nsIID& aIID,
void** aResult)
{
nsIVariant* v = mPropertyHash.GetWeak(aProp);
if (!v) {
return NS_ERROR_NOT_AVAILABLE;
}
nsCOMPtr<nsISupports> val;
nsresult rv = v->GetAsISupports(getter_AddRefs(val));
if (NS_FAILED(rv)) {
return rv;
}
if (!val) {
// We have a value, but it's null
*aResult = nullptr;
return NS_OK;
}
return val->QueryInterface(aIID, aResult);
}
NS_IMETHODIMP
nsHashPropertyBagBase::SetPropertyAsAString(const nsAString& aProp,
const nsAString& aValue)
{
nsCOMPtr<nsIWritableVariant> var = new nsVariant();
var->SetAsAString(aValue);
return SetProperty(aProp, var);
}
NS_IMETHODIMP
nsHashPropertyBagBase::SetPropertyAsACString(const nsAString& aProp,
const nsACString& aValue)
{
nsCOMPtr<nsIWritableVariant> var = new nsVariant();
var->SetAsACString(aValue);
return SetProperty(aProp, var);
}
NS_IMETHODIMP
nsHashPropertyBagBase::SetPropertyAsAUTF8String(const nsAString& aProp,
const nsACString& aValue)
{
nsCOMPtr<nsIWritableVariant> var = new nsVariant();
var->SetAsAUTF8String(aValue);
return SetProperty(aProp, var);
}
NS_IMETHODIMP
nsHashPropertyBagBase::SetPropertyAsInterface(const nsAString& aProp,
nsISupports* aValue)
{
nsCOMPtr<nsIWritableVariant> var = new nsVariant();
var->SetAsISupports(aValue);
return SetProperty(aProp, var);
}
/*
* nsHashPropertyBag implementation.
*/
NS_IMPL_ADDREF(nsHashPropertyBag)
NS_IMPL_RELEASE(nsHashPropertyBag)
NS_INTERFACE_MAP_BEGIN(nsHashPropertyBag)
NS_INTERFACE_MAP_ENTRY(nsIWritablePropertyBag)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIPropertyBag, nsIWritablePropertyBag)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIWritablePropertyBag)
NS_INTERFACE_MAP_ENTRY(nsIPropertyBag2)
NS_INTERFACE_MAP_ENTRY(nsIWritablePropertyBag2)
NS_INTERFACE_MAP_END
/*
* nsHashPropertyBagCC implementation.
*/
NS_IMPL_CYCLE_COLLECTION(nsHashPropertyBagCC, mPropertyHash)
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsHashPropertyBagCC)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsHashPropertyBagCC)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsHashPropertyBagCC)
NS_INTERFACE_MAP_ENTRY(nsIWritablePropertyBag)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIPropertyBag, nsIWritablePropertyBag)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIWritablePropertyBag)
NS_INTERFACE_MAP_ENTRY(nsIPropertyBag2)
NS_INTERFACE_MAP_ENTRY(nsIWritablePropertyBag2)
NS_INTERFACE_MAP_END