public ExpressionSyntax TranslateCustomParameter(ParameterInfo p, CoroutineSpecialVariableAttribute attribute)
{
var parameterType = p.ParameterType.GenerateTypeHandle(IterationContext.Stencil);
var attributeType = attribute.GetType();
ExpressionSyntax expr;
var ext = ModelUtility.ExtensionMethodCache <CoroutineParameterTranslator> .GetExtensionMethod(
attributeType,
FilterMethods,
KeySelector);
if (ext != null)
{
var translator = new CoroutineParameterTranslator {
Translator = m_Translator
};
expr = (ExpressionSyntax)ext.Invoke(null, new object[] { translator, attribute });
}
else
{
string errorMessage = $"Unable to translate MoveNext parameter: [{attributeType.Name}] {p.ParameterType.Name} {p.Name}";
expr = LiteralExpression(SyntaxKind.DefaultLiteralExpression,
Token(TriviaList(), SyntaxKind.DefaultKeyword, TriviaList(Comment("/* " + errorMessage + " */"))));
Debug.LogError(errorMessage);
}
return(GetCachedValue(p.Name, expr, parameterType));
}
// Translator for Coroutine MoveNext Parameters have to follow this exact signature
// the last parameter being your custom Attribute inheriting from CoroutineSpecialVariableAttribute
public static ExpressionSyntax GetInternalVariable(this CoroutineParameterTranslator _, CoroutineInternalVariableAttribute attr)
{
switch (attr.Variable)
{
case CoroutineInternalVariable.DeltaTime:
return(MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
IdentifierName(nameof(Time)),
IdentifierName(nameof(Time.deltaTime))));
default:
throw new ArgumentOutOfRangeException();
}
}