InjectedScriptBase.cpp [plain text]
#include "config.h"
#include "InjectedScriptBase.h"
#if ENABLE(INSPECTOR)
#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();
bool evalIsDisabled = false;
if (scriptState) {
evalIsDisabled = !scriptState->lexicalGlobalObject()->evalEnabled();
if (evalIsDisabled)
scriptState->lexicalGlobalObject()->setEvalEnabled(true);
}
Deprecated::ScriptValue resultValue = function.call(hadException);
if (evalIsDisabled)
scriptState->lexicalGlobalObject()->setEvalEnabled(false);
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<TypeBuilder::Runtime::RemoteObject>* objectResult, TypeBuilder::OptOutput<bool>* wasThrown)
{
RefPtr<InspectorValue> result;
makeCall(function, &result);
if (!result) {
*errorString = ASCIILiteral("Internal error: result value is empty");
return;
}
if (result->type() == InspectorValue::TypeString) {
result->asString(errorString);
ASSERT(errorString->length());
return;
}
RefPtr<InspectorObject> resultPair = result->asObject();
if (!resultPair) {
*errorString = ASCIILiteral("Internal error: result is not an Object");
return;
}
RefPtr<InspectorObject> resultObj = resultPair->getObject(ASCIILiteral("result"));
bool wasThrownVal = false;
if (!resultObj || !resultPair->getBoolean(ASCIILiteral("wasThrown"), &wasThrownVal)) {
*errorString = ASCIILiteral("Internal error: result is not a pair of value and wasThrown flag");
return;
}
*objectResult = TypeBuilder::Runtime::RemoteObject::runtimeCast(resultObj);
*wasThrown = wasThrownVal;
}
}
#endif // ENABLE(INSPECTOR)