The Tor Browser: xpcom/ds/nsHashPropertyBag.cpp@b8a032363ba2 (annotated)

xpcom/ds/nsHashPropertyBag.cpp@b8a032363ba2 (annotated)

xpcom/ds/nsHashPropertyBag.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* vim:set ts=4 sw=4 sts=4: */
 /* 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"
 nsresult
 NS_NewHashPropertyBag(nsIWritablePropertyBag* *_retval)
 {
     nsRefPtr<nsHashPropertyBag> hpb = new nsHashPropertyBag();
     hpb.forget(_retval);
     return NS_OK;
 }
 /*
  * nsHashPropertyBag impl
  */
 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
 NS_IMETHODIMP
 nsHashPropertyBag::HasKey(const nsAString& name, bool *aResult)
 {
     *aResult = mPropertyHash.Get(name, nullptr);
     return NS_OK;
 }
 NS_IMETHODIMP
 nsHashPropertyBag::Get(const nsAString& name, nsIVariant* *_retval)
 {
     if (!mPropertyHash.Get(name, _retval))
         *_retval = nullptr;
     return NS_OK;
 }
 NS_IMETHODIMP
 nsHashPropertyBag::GetProperty(const nsAString& name, nsIVariant* *_retval)
 {
     bool isFound = mPropertyHash.Get(name, _retval);
     if (!isFound)
         return NS_ERROR_FAILURE;
     return NS_OK;
 }
 NS_IMETHODIMP
 nsHashPropertyBag::SetProperty(const nsAString& name, nsIVariant *value)
 {
     if (NS_WARN_IF(!value))
         return NS_ERROR_INVALID_ARG;
     mPropertyHash.Put(name, value);
     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?!?!
     bool isFound = mPropertyHash.Get(name, nullptr);
     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 MOZ_FINAL : 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_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
 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, false);
     return PL_DHASH_NEXT;
 }
 NS_IMETHODIMP
 nsHashPropertyBag::GetEnumerator(nsISimpleEnumerator* *_retval)
 {
     nsCOMPtr<nsIMutableArray> propertyArray = nsArray::Create();
     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(); \
     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
 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 = nullptr;
         return NS_OK;
     }
     return val->QueryInterface(aIID, _retval);
 }
 NS_IMETHODIMP
 nsHashPropertyBag::SetPropertyAsAString(const nsAString & prop, const nsAString & value)
 {
     nsCOMPtr<nsIWritableVariant> var = new nsVariant();
     var->SetAsAString(value);
     return SetProperty(prop, var);
 }
 NS_IMETHODIMP
 nsHashPropertyBag::SetPropertyAsACString(const nsAString & prop, const nsACString & value)
 {
     nsCOMPtr<nsIWritableVariant> var = new nsVariant();
     var->SetAsACString(value);
     return SetProperty(prop, var);
 }
 NS_IMETHODIMP
 nsHashPropertyBag::SetPropertyAsAUTF8String(const nsAString & prop, const nsACString & value)
 {
     nsCOMPtr<nsIWritableVariant> var = new nsVariant();
     var->SetAsAUTF8String(value);
     return SetProperty(prop, var);
 }
 NS_IMETHODIMP
 nsHashPropertyBag::SetPropertyAsInterface(const nsAString & prop, nsISupports* value)
 {
     nsCOMPtr<nsIWritableVariant> var = new nsVariant();
     var->SetAsISupports(value);
     return SetProperty(prop, var);
 }

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xpcom/ds/nsHashPropertyBag.cpp@b8a032363ba2 (annotated)

xpcom/ds/nsHashPropertyBag.cpp