public static bool Returns(this ParenthesizedLambdaExpressionSyntax method, string name)
{
if (name == null)
{
return(false);
}
return(method.DescendantNodes <ReturnStatementSyntax>()
.Select(rss => rss.DescendantNodes <IdentifierNameSyntax>())
.Any(inss => inss.Any(ins => ins.Identifier.Text == name)));
}
private HybInstance RunParenthesizedLambda(ParenthesizedLambdaExpressionSyntax node)
{
// Detects the lambda is `Func` or `Action`.
var hasReturn = node.DescendantNodes()
.Any(x => x is ReturnStatementSyntax);
var ps = node.ParameterList.Parameters;
var retType = TypeDeduction.GetReturnType(Resolver, node.Body);
MethodInfo converter = null;
object body = null;
// `Func`
if (hasReturn)
{
converter = GetConverterF(ps.Count);
var genericArgs = new Type[ps.Count + 1];
for (int i = 0; i < ps.Count; i++)
{
if (ps[i].Type == null)
{
throw new SemanticViolationException("Please provide a explicit type to all lambda parameters, this function is partialy implemented.");
}
genericArgs[i] = Resolver
.GetType($"{ps[i].Type}")
.Unwrap();
}
genericArgs[genericArgs.Length - 1] = retType.Unwrap();
converter = converter
.MakeGenericMethod(genericArgs);
if (ps.Count == 0)
{
body = new Func <object>(() => {
RunBlock(node.Body as BlockSyntax);
if (Halt == HaltType.Return)
{
Halt = HaltType.None;
}
return(Ret.Unwrap());
});
}
else if (ps.Count == 1)
{
body = new Func <object, object>((a) => {
return(FuncBody(ps, node.Body as BlockSyntax, a));
});
}
else if (ps.Count == 2)
{
body = new Func <object, object, object>((a, b) => {
return(FuncBody(ps, node.Body as BlockSyntax, a, b));
});
}
else if (ps.Count == 3)
{
body = new Func <object, object, object, object>((a, b, c) => {
return(FuncBody(ps, node.Body as BlockSyntax, a, b, c));
});
}
else if (ps.Count == 4)
{
body = new Func <object, object, object, object, object>((a, b, c, d) => {
return(FuncBody(ps, node.Body as BlockSyntax, a, b, c, d));
});
}
else if (ps.Count == 5)
{
body = new Func <object, object, object, object, object, object>((a, b, c, d, e) => {
return(FuncBody(ps, node.Body as BlockSyntax, a, b, c, d, e));
});
}
else if (ps.Count == 6)
{
body = new Func <object, object, object, object, object, object, object>((a, b, c, d, e, f) => {
return(FuncBody(ps, node.Body as BlockSyntax, a, b, c, d, e, f));
});
}
else if (ps.Count == 7)
{
body = new Func <object, object, object, object, object, object, object, object>((a, b, c, d, e, f, g) => {
return(FuncBody(ps, node.Body as BlockSyntax, a, b, c, d, e, f, g));
});
}
}
// `Action`
else
{
converter = GetConverterA(ps.Count);
var genericArgs = new Type[ps.Count];
for (int i = 0; i < ps.Count; i++)
{
if (ps[i].Type == null)
{
throw new SemanticViolationException("Please provide a explicit type to all lambda parameters, this function is partialy implemented.");
}
genericArgs[i] = Resolver
.GetType($"{ps[i].Type}")
.Unwrap();
}
if (ps.Count > 0)
{
converter = converter
.MakeGenericMethod(genericArgs);
}
if (ps.Count == 0)
{
body = new Action(() => {
RunBlock(node.Body as BlockSyntax);
if (Halt == HaltType.Return)
{
Halt = HaltType.None;
}
});
}
else if (ps.Count == 1)
{
body = new Action <object>((a) => {
ActionBody(ps, node.Body as BlockSyntax, a);
});
}
else if (ps.Count == 2)
{
body = new Action <object, object>((a, b) => {
ActionBody(ps, node.Body as BlockSyntax, a, b);
});
}
else if (ps.Count == 3)
{
body = new Action <object, object, object>((a, b, c) => {
ActionBody(ps, node.Body as BlockSyntax, a, b, c);
});
}
else if (ps.Count == 4)
{
body = new Action <object, object, object, object>((a, b, c, d) => {
ActionBody(ps, node.Body as BlockSyntax, a, b, c, d);
});
}
else if (ps.Count == 5)
{
body = new Action <object, object, object, object, object>((a, b, c, d, e) => {
ActionBody(ps, node.Body as BlockSyntax, a, b, c, d, e);
});
}
else if (ps.Count == 6)
{
body = new Action <object, object, object, object, object, object>((a, b, c, d, e, f) => {
ActionBody(ps, node.Body as BlockSyntax, a, b, c, d, e, f);
});
}
else if (ps.Count == 7)
{
body = new Action <object, object, object, object, object, object, object>((a, b, c, d, e, f, g) => {
ActionBody(ps, node.Body as BlockSyntax, a, b, c, d, e, f, g);
});
}
}
var convertedDelegate = converter.Invoke(
null, new object[] { body });
return(new HybInstance(
HybTypeCache.GetHybType(convertedDelegate.GetType()),
convertedDelegate));
}