C++ (Cpp) ExecState::scopeChain Beispiele

Beispiel #1

Datei: DFGOperations.cpp Projekt: sysrqb/chromium-src

static void* handleHostCall(ExecState* execCallee, JSValue callee, CodeSpecializationKind kind)
{
    ExecState* exec = execCallee->callerFrame();
    JSGlobalData* globalData = &exec->globalData();
    if (kind == CodeForCall) {
        CallData callData;
        CallType callType = getCallData(callee, callData);
    
        ASSERT(callType != CallTypeJS);
    
        if (callType == CallTypeHost) {
            if (!globalData->interpreter->registerFile().grow(execCallee->registers())) {
                globalData->exception = createStackOverflowError(exec);
                return 0;
            }
        
            execCallee->setScopeChain(exec->scopeChain());
        
            globalData->hostCallReturnValue = JSValue::decode(callData.native.function(execCallee));
        
            if (globalData->exception)
                return 0;
            return reinterpret_cast<void*>(getHostCallReturnValue);
        }
    
        ASSERT(callType == CallTypeNone);
        exec->globalData().exception = createNotAFunctionError(exec, callee);
        return 0;
    }

    ASSERT(kind == CodeForConstruct);
    
    ConstructData constructData;
    ConstructType constructType = getConstructData(callee, constructData);
    
    ASSERT(constructType != ConstructTypeJS);
    
    if (constructType == ConstructTypeHost) {
        if (!globalData->interpreter->registerFile().grow(execCallee->registers())) {
            globalData->exception = createStackOverflowError(exec);
            return 0;
        }
        
        execCallee->setScopeChain(exec->scopeChain());
        
        globalData->hostCallReturnValue = JSValue::decode(constructData.native.function(execCallee));
        
        if (globalData->exception)
            return 0;
        return reinterpret_cast<void*>(getHostCallReturnValue);
    }
    
    ASSERT(constructType == ConstructTypeNone);
    exec->globalData().exception = createNotAConstructorError(exec, callee);
    return 0;
}