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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /devtools/platform/nsJSInspector.cpp | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'devtools/platform/nsJSInspector.cpp')
-rw-r--r-- | devtools/platform/nsJSInspector.cpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/devtools/platform/nsJSInspector.cpp b/devtools/platform/nsJSInspector.cpp new file mode 100644 index 0000000000..944cd9d943 --- /dev/null +++ b/devtools/platform/nsJSInspector.cpp @@ -0,0 +1,116 @@ +/* -*- 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 |