private static string GetMessage(string method, VerificationResult failure)
{
if (failure.IsStackUnderflow)
{
if (failure.ExpectedStackSize == 1)
{
return method + " expects a value on the stack, but it was empty";
}
return method + " expects " + failure.ExpectedStackSize + " values on the stack";
}
if (failure.IsTypeMismatch)
{
if (failure.ExpectedAtStackIndex != null)
{
var expected = ErrorMessageString(failure.ExpectedAtStackIndex);
var found = ErrorMessageString(failure.Stack.ElementAt(failure.StackIndex));
return method + " expected " + (ExtensionMethods.StartsWithVowel(expected) ? "an " : "a ") + expected + "; found " + found;
}
var ex = ErrorMessageString(failure.ExpectedOnStack);
var ac = ErrorMessageString(failure.ActuallyOnStack);
return method + " expected " + (ExtensionMethods.StartsWithVowel(ex) ? "an " : "a ") + ex + "; found " + ac;
}
if (failure.IsStackMismatch)
{
return method + " resulted in stack mismatches";
}
if (failure.IsStackSizeFailure)
{
if (failure.ExpectedStackSize == 0)
{
return method + " expected the stack of be empty";
}
if (failure.ExpectedStackSize == 1)
{
return method + " expected the stack to have 1 value";
}
return method + " expected the stack to have " + failure.ExpectedStackSize + " values";
}
throw new Exception("Shouldn't be possible!");
}
internal SigilVerificationException(string method, VerificationResult failure, string[] instructions)
: this(GetMessage(method, failure), instructions)
{
VerificationFailure = failure;
}