InjectedScriptBase.cpp [plain text]
#include "config.h"
#include "InjectedScriptBase.h"
#include "DebuggerEvalEnabler.h"
#include "InspectorValues.h"
#include "JSCInlines.h"
#include "JSGlobalObject.h"
#include "ScriptFunctionCall.h"
#include <wtf/text/WTFString.h>
namespace Inspector {
InjectedScriptBase::InjectedScriptBase(const String& name)
: m_name(name)
, m_environment(nullptr)
{
}
InjectedScriptBase::InjectedScriptBase(const String& name, Deprecated::ScriptObject injectedScriptObject, InspectorEnvironment* environment)
: m_name(name)
, m_injectedScriptObject(injectedScriptObject)
, m_environment(environment)
{
}
InjectedScriptBase::~InjectedScriptBase()
{
}
void InjectedScriptBase::initialize(Deprecated::ScriptObject injectedScriptObject, InspectorEnvironment* environment)
{
m_injectedScriptObject = injectedScriptObject;
m_environment = environment;
}
bool InjectedScriptBase::hasAccessToInspectedScriptState() const
{
return m_environment && m_environment->canAccessInspectedScriptState(m_injectedScriptObject.scriptState());
}
const Deprecated::ScriptObject& InjectedScriptBase::injectedScriptObject() const
{
return m_injectedScriptObject;
}
Deprecated::ScriptValue InjectedScriptBase::callFunctionWithEvalEnabled(Deprecated::ScriptFunctionCall& function, bool& hadException) const
{
if (m_environment)
m_environment->willCallInjectedScriptFunction(m_injectedScriptObject.scriptState(), name(), 1);
JSC::ExecState* scriptState = m_injectedScriptObject.scriptState();
Deprecated::ScriptValue resultValue;
{
JSC::DebuggerEvalEnabler evalEnabler(scriptState);
resultValue = function.call(hadException);
}
if (m_environment)
m_environment->didCallInjectedScriptFunction(m_injectedScriptObject.scriptState());
return resultValue;
}
void InjectedScriptBase::makeCall(Deprecated::ScriptFunctionCall& function, RefPtr<InspectorValue>* result)
{
if (hasNoValue() || !hasAccessToInspectedScriptState()) {
*result = InspectorValue::null();
return;
}
bool hadException = false;
Deprecated::ScriptValue resultValue = callFunctionWithEvalEnabled(function, hadException);
ASSERT(!hadException);
if (!hadException) {
*result = resultValue.toInspectorValue(m_injectedScriptObject.scriptState());
if (!*result)
*result = InspectorString::create(String::format("Object has too long reference chain (must not be longer than %d)", InspectorValue::maxDepth));
} else
*result = InspectorString::create("Exception while making a call.");
}
void InjectedScriptBase::makeEvalCall(ErrorString& errorString, Deprecated::ScriptFunctionCall& function, RefPtr<Protocol::Runtime::RemoteObject>* objectResult, Protocol::OptOutput<bool>* wasThrown, Protocol::OptOutput<int>* savedResultIndex)
{
RefPtr<InspectorValue> result;
makeCall(function, &result);
if (!result) {
errorString = ASCIILiteral("Internal error: result value is empty");
return;
}
if (result->type() == InspectorValue::Type::String) {
result->asString(errorString);
ASSERT(errorString.length());
return;
}
RefPtr<InspectorObject> resultTuple;
if (!result->asObject(resultTuple)) {
errorString = ASCIILiteral("Internal error: result is not an Object");
return;
}
RefPtr<InspectorObject> resultObject;
if (!resultTuple->getObject(ASCIILiteral("result"), resultObject)) {
errorString = ASCIILiteral("Internal error: result is not a pair of value and wasThrown flag");
return;
}
bool wasThrownValue = false;
if (!resultTuple->getBoolean(ASCIILiteral("wasThrown"), wasThrownValue)) {
errorString = ASCIILiteral("Internal error: result is not a pair of value and wasThrown flag");
return;
}
*objectResult = BindingTraits<Protocol::Runtime::RemoteObject>::runtimeCast(resultObject);
*wasThrown = wasThrownValue;
if (savedResultIndex) {
int savedIndex = 0;
if (resultTuple->getInteger(ASCIILiteral("savedResultIndex"), savedIndex))
*savedResultIndex = savedIndex;
}
}
}