mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-26 22:32:46 +00:00
117 lines
3.3 KiB
C++
117 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
|
|
/* 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 "nsJSInspector.h"
|
|
#include "mozilla/HoldDropJSObjects.h"
|
|
#include "mozilla/SpinEventLoopUntil.h"
|
|
#include "mozilla/dom/ScriptSettings.h"
|
|
#include "nsTArray.h"
|
|
|
|
#define JSINSPECTOR_CONTRACTID "@mozilla.org/jsinspector;1"
|
|
|
|
#define JSINSPECTOR_CID \
|
|
{ \
|
|
0xec5aa99c, 0x7abb, 0x4142, { \
|
|
0xac, 0x5f, 0xaa, 0xb2, 0x41, 0x9e, 0x38, 0xe2 \
|
|
} \
|
|
}
|
|
|
|
namespace mozilla {
|
|
namespace jsinspector {
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsJSInspector)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
NS_INTERFACE_MAP_ENTRY(nsIJSInspector)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(nsJSInspector)
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsJSInspector)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsJSInspector)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsJSInspector)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsJSInspector)
|
|
tmp->mRequestors.Clear();
|
|
tmp->mLastRequestor = JS::NullValue();
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsJSInspector)
|
|
for (uint32_t i = 0; i < tmp->mRequestors.Length(); ++i) {
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mRequestors[i])
|
|
}
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mLastRequestor)
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_END
|
|
|
|
nsJSInspector::nsJSInspector()
|
|
: mNestedLoopLevel(0), mRequestors(1), mLastRequestor(JS::NullValue()) {}
|
|
|
|
nsJSInspector::~nsJSInspector() {
|
|
MOZ_ASSERT(mRequestors.Length() == 0);
|
|
MOZ_ASSERT(mLastRequestor.isNull());
|
|
mozilla::DropJSObjects(this);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsJSInspector::EnterNestedEventLoop(JS::Handle<JS::Value> requestor,
|
|
uint32_t* out) {
|
|
nsresult rv = NS_OK;
|
|
|
|
mLastRequestor = requestor;
|
|
mRequestors.AppendElement(requestor);
|
|
mozilla::HoldJSObjects(this);
|
|
|
|
mozilla::dom::AutoNoJSAPI nojsapi;
|
|
|
|
uint32_t nestLevel = ++mNestedLoopLevel;
|
|
if (!SpinEventLoopUntil("nsJSInspector::EnterNestedEventLoop"_ns,
|
|
[&]() { return mNestedLoopLevel < nestLevel; })) {
|
|
rv = NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
NS_ASSERTION(mNestedLoopLevel <= nestLevel,
|
|
"nested event didn't unwind properly");
|
|
|
|
if (mNestedLoopLevel == nestLevel) {
|
|
mLastRequestor = mRequestors.ElementAt(--mNestedLoopLevel);
|
|
}
|
|
|
|
*out = mNestedLoopLevel;
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsJSInspector::ExitNestedEventLoop(uint32_t* out) {
|
|
if (mNestedLoopLevel > 0) {
|
|
mRequestors.RemoveElementAt(--mNestedLoopLevel);
|
|
if (mNestedLoopLevel > 0)
|
|
mLastRequestor = mRequestors.ElementAt(mNestedLoopLevel - 1);
|
|
else
|
|
mLastRequestor = JS::NullValue();
|
|
} else {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
*out = mNestedLoopLevel;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsJSInspector::GetEventLoopNestLevel(uint32_t* out) {
|
|
*out = mNestedLoopLevel;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsJSInspector::GetLastNestRequestor(JS::MutableHandle<JS::Value> out) {
|
|
out.set(mLastRequestor);
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace jsinspector
|
|
} // namespace mozilla
|