public override Ust VisitLiteralExpression(LiteralExpressionSyntax node)
{
var token = node.Token;
var span = node.GetTextSpan();
if (token.Value == null)
{
return(new NullLiteral(span));
}
var str = token.Value as string;
if (str != null)
{
return(new StringLiteral(str, span));
}
if (token.Value is char)
{
return(new StringLiteral(token.ValueText, span));
}
var typeName = token.Value.GetType().Name;
switch (typeName)
{
case "Boolean":
return(new BooleanLiteral((bool)token.Value, node.GetTextSpan()));
case "Int32":
case "UInt32":
case "Int16":
case "UInt16":
case "Byte":
case "SByte":
case "Int64":
return(new IntLiteral(System.Convert.ToInt64(token.Value), node.GetTextSpan()));
case "UInt64":
return(new IntLiteral((long)System.Convert.ToUInt64(token.Value), node.GetTextSpan()));
case "Double":
case "Single":
case "Decimal":
return(new FloatLiteral(System.Convert.ToDouble(token.Value), node.GetTextSpan()));
default:
throw new NotImplementedException();
}
}