gecko-dev/xpcom/ds/nsHashPropertyBag.cpp

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/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 sts=4: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Oracle Corporation code.
*
* The Initial Developer of the Original Code is
* Oracle Corporation
* Portions created by the Initial Developer are Copyright (C) 2004
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir.vukicevic@oracle.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsHashPropertyBag.h"
#include "nsArray.h"
#include "nsArrayEnumerator.h"
#include "nsComponentManagerUtils.h"
#include "nsIVariant.h"
#include "nsIProperty.h"
#include "nsVariant.h"
nsresult
NS_NewHashPropertyBag(nsIWritablePropertyBag* *_retval)
{
nsHashPropertyBag *hpb = new nsHashPropertyBag();
if (!hpb)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(hpb);
nsresult rv = hpb->Init();
if (NS_FAILED(rv)) {
NS_RELEASE(hpb);
return rv;
}
*_retval = hpb;
return NS_OK;
}
/*
* nsHashPropertyBag impl
*/
NS_IMPL_THREADSAFE_ADDREF(nsHashPropertyBag)
NS_IMPL_THREADSAFE_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
nsresult
nsHashPropertyBag::Init()
{
// we can only assume that Init will fail only due to OOM.
if (!mPropertyHash.Init())
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
NS_IMETHODIMP
nsHashPropertyBag::HasKey(const nsAString& name, PRBool *aResult)
{
*aResult = mPropertyHash.Get(name, nsnull);
return NS_OK;
}
NS_IMETHODIMP
nsHashPropertyBag::Get(const nsAString& name, nsIVariant* *_retval)
{
if (!mPropertyHash.Get(name, _retval))
*_retval = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsHashPropertyBag::GetProperty(const nsAString& name, nsIVariant* *_retval)
{
PRBool isFound = mPropertyHash.Get(name, _retval);
if (!isFound)
return NS_ERROR_FAILURE;
return NS_OK;
}
NS_IMETHODIMP
nsHashPropertyBag::SetProperty(const nsAString& name, nsIVariant *value)
{
NS_ENSURE_ARG_POINTER(value);
PRBool success = mPropertyHash.Put(name, value);
if (!success)
return NS_ERROR_FAILURE;
return NS_OK;
}
NS_IMETHODIMP
nsHashPropertyBag::DeleteProperty(const nsAString& name)
{
// is it too much to ask for ns*Hashtable to return
// a boolean indicating whether RemoveEntry succeeded
// or not?!?!
PRBool isFound = mPropertyHash.Get(name, nsnull);
if (!isFound)
return NS_ERROR_FAILURE;
// then from the hash
mPropertyHash.Remove(name);
return NS_OK;
}
//
// nsSimpleProperty class and impl; used for GetEnumerator
//
class nsSimpleProperty : public nsIProperty {
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_ISUPPORTS1(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
static PLDHashOperator
PropertyHashToArrayFunc (const nsAString &aKey,
nsIVariant* aData,
void *userArg)
{
nsIMutableArray *propertyArray =
static_cast<nsIMutableArray *>(userArg);
nsSimpleProperty *sprop = new nsSimpleProperty(aKey, aData);
propertyArray->AppendElement(sprop, PR_FALSE);
return PL_DHASH_NEXT;
}
NS_IMETHODIMP
nsHashPropertyBag::GetEnumerator(nsISimpleEnumerator* *_retval)
{
nsCOMPtr<nsIMutableArray> propertyArray = new nsArray();
if (!propertyArray)
return NS_ERROR_OUT_OF_MEMORY;
mPropertyHash.EnumerateRead(PropertyHashToArrayFunc, propertyArray.get());
return NS_NewArrayEnumerator(_retval, propertyArray);
}
#define IMPL_GETSETPROPERTY_AS(Name, Type) \
NS_IMETHODIMP \
nsHashPropertyBag::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 \
nsHashPropertyBag::SetPropertyAs ## Name (const nsAString & prop, Type value) \
{ \
nsCOMPtr<nsIWritableVariant> var = new nsVariant(); \
if (!var) \
return NS_ERROR_OUT_OF_MEMORY; \
var->SetAs ## Name(value); \
return SetProperty(prop, var); \
}
IMPL_GETSETPROPERTY_AS(Int32, PRInt32)
IMPL_GETSETPROPERTY_AS(Uint32, PRUint32)
IMPL_GETSETPROPERTY_AS(Int64, PRInt64)
IMPL_GETSETPROPERTY_AS(Uint64, PRUint64)
IMPL_GETSETPROPERTY_AS(Double, double)
IMPL_GETSETPROPERTY_AS(Bool, PRBool)
NS_IMETHODIMP
nsHashPropertyBag::GetPropertyAsAString(const nsAString & prop, nsAString & _retval)
{
nsIVariant* v = mPropertyHash.GetWeak(prop);
if (!v)
return NS_ERROR_NOT_AVAILABLE;
return v->GetAsAString(_retval);
}
NS_IMETHODIMP
nsHashPropertyBag::GetPropertyAsACString(const nsAString & prop, nsACString & _retval)
{
nsIVariant* v = mPropertyHash.GetWeak(prop);
if (!v)
return NS_ERROR_NOT_AVAILABLE;
return v->GetAsACString(_retval);
}
NS_IMETHODIMP
nsHashPropertyBag::GetPropertyAsAUTF8String(const nsAString & prop, nsACString & _retval)
{
nsIVariant* v = mPropertyHash.GetWeak(prop);
if (!v)
return NS_ERROR_NOT_AVAILABLE;
return v->GetAsAUTF8String(_retval);
}
NS_IMETHODIMP
nsHashPropertyBag::GetPropertyAsInterface(const nsAString & prop,
const nsIID & aIID,
void** _retval)
{
nsIVariant* v = mPropertyHash.GetWeak(prop);
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
*_retval = nsnull;
return NS_OK;
}
return val->QueryInterface(aIID, _retval);
}
NS_IMETHODIMP
nsHashPropertyBag::SetPropertyAsAString(const nsAString & prop, const nsAString & value)
{
nsCOMPtr<nsIWritableVariant> var = new nsVariant();
if (!var)
return NS_ERROR_OUT_OF_MEMORY;
var->SetAsAString(value);
return SetProperty(prop, var);
}
NS_IMETHODIMP
nsHashPropertyBag::SetPropertyAsACString(const nsAString & prop, const nsACString & value)
{
nsCOMPtr<nsIWritableVariant> var = new nsVariant();
if (!var)
return NS_ERROR_OUT_OF_MEMORY;
var->SetAsACString(value);
return SetProperty(prop, var);
}
NS_IMETHODIMP
nsHashPropertyBag::SetPropertyAsAUTF8String(const nsAString & prop, const nsACString & value)
{
nsCOMPtr<nsIWritableVariant> var = new nsVariant();
if (!var)
return NS_ERROR_OUT_OF_MEMORY;
var->SetAsAUTF8String(value);
return SetProperty(prop, var);
}
NS_IMETHODIMP
nsHashPropertyBag::SetPropertyAsInterface(const nsAString & prop, nsISupports* value)
{
nsCOMPtr<nsIWritableVariant> var = new nsVariant();
if (!var)
return NS_ERROR_OUT_OF_MEMORY;
var->SetAsISupports(value);
return SetProperty(prop, var);
}