gecko/toolkit/devtools/debugger/nsJSInspector.cpp

113 lines
2.5 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 "nsIXPConnect.h"
#include "nsIJSContextStack.h"
#include "nsThreadUtils.h"
#include "jsapi.h"
#include "jsfriendapi.h"
#include "jsdbgapi.h"
#include "mozilla/ModuleUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsMemory.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_GENERIC_FACTORY_CONSTRUCTOR(nsJSInspector)
NS_IMPL_ISUPPORTS1(nsJSInspector, nsIJSInspector)
nsJSInspector::nsJSInspector() : mNestedLoopLevel(0)
{
}
nsJSInspector::~nsJSInspector()
{
}
NS_IMETHODIMP
nsJSInspector::EnterNestedEventLoop(uint32_t *out)
{
nsresult rv;
nsCOMPtr<nsIJSContextStack> stack =
do_GetService("@mozilla.org/js/xpc/ContextStack;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
uint32_t nestLevel = ++mNestedLoopLevel;
if (NS_SUCCEEDED(stack->Push(nullptr))) {
while (NS_SUCCEEDED(rv) && mNestedLoopLevel >= nestLevel) {
if (!NS_ProcessNextEvent())
rv = NS_ERROR_UNEXPECTED;
}
JSContext *cx;
stack->Pop(&cx);
NS_ASSERTION(cx == nullptr, "JSContextStack mismatch");
} else {
rv = NS_ERROR_FAILURE;
}
NS_ASSERTION(mNestedLoopLevel <= nestLevel,
"nested event didn't unwind properly");
if (mNestedLoopLevel == nestLevel)
--mNestedLoopLevel;
*out = mNestedLoopLevel;
return rv;
}
NS_IMETHODIMP
nsJSInspector::ExitNestedEventLoop(uint32_t *out)
{
if (mNestedLoopLevel > 0) {
--mNestedLoopLevel;
} else {
return NS_ERROR_FAILURE;
}
*out = mNestedLoopLevel;
return NS_OK;
}
NS_IMETHODIMP
nsJSInspector::GetEventLoopNestLevel(uint32_t *out)
{
*out = mNestedLoopLevel;
return NS_OK;
}
}
}
NS_DEFINE_NAMED_CID(JSINSPECTOR_CID);
static const mozilla::Module::CIDEntry kJSInspectorCIDs[] = {
{ &kJSINSPECTOR_CID, false, NULL, mozilla::jsinspector::nsJSInspectorConstructor },
{ NULL }
};
static const mozilla::Module::ContractIDEntry kJSInspectorContracts[] = {
{ JSINSPECTOR_CONTRACTID, &kJSINSPECTOR_CID },
{ NULL }
};
static const mozilla::Module kJSInspectorModule = {
mozilla::Module::kVersion,
kJSInspectorCIDs,
kJSInspectorContracts
};
NSMODULE_DEFN(jsinspector) = &kJSInspectorModule;