public ISetup Create(Expression <Action> expression)
{
MethodCallInfo methodCall = _expressionHelper.GetMethod(expression);
if (methodCall == null)
{
throw new ArgumentException("Not a method", "expression");
}
var setup = new Setup(methodCall);
AddSetup(setup);
return(setup);
}
private IEnumerable <SetupTarget> GetSetupsFromInstructions(object target, MethodBody body, List <MethodDefinition> setupMethods)
{
foreach (var instruction in body.Instructions)
{
if (instruction.OpCode != OpCodes.Callvirt && instruction.OpCode != OpCodes.Call)
{
continue;
}
var operandMethod = ((MethodReference)instruction.Operand).Resolve();
if (setupMethods.Contains(operandMethod))
{
Expression expression = _expressionDecompiler.Decompile(body, instruction, target);
if (expression == null)
{
// This should not happen. When this happens it's most likely
// a bug in the expression decompiler.
throw new SetupExtractionException("Could not extract expression");
}
var methodCall = _expressionHelper.GetMethod(expression);
if (methodCall == null)
{
string message = string.Format(
"Could not extract method from expression {0}", expression);
throw new SetupExtractionException(message);
}
yield return(new SetupTarget(expression, methodCall.Method));
}
else
{
bool inSameClass = InSameClass(operandMethod.DeclaringType, body.Method.DeclaringType);
if (inSameClass && operandMethod != body.Method && operandMethod.Body != null)
{
foreach (var setup in GetSetupsFromInstructions(target, operandMethod.Body, setupMethods))
{
yield return(setup);
}
}
}
}
}
public static MethodBase GetMethod(Expression <Action> expression)
{
return(ExpressionHelper.GetMethod(expression).Method);
}