public IParseTreeValue CreateDeclaredType(string expression, string declaredTypeName)
{
if (expression is null || declaredTypeName is null)
{
throw new ArgumentNullException();
}
if (ParseTreeValue.TryGetNonPrintingControlCharCompareToken(expression, out string comparableToken))
{
var charConversion = new TypeTokenPair(Tokens.String, comparableToken);
return(ParseTreeValue.CreateValueType(charConversion));
}
var goalTypeTokenPair = new TypeTokenPair(declaredTypeName, null);
var typeToken = TypeTokenPair.ConformToType(declaredTypeName, expression);
if (typeToken.HasValue)
{
if (LetCoerce.ExceedsValueTypeRange(typeToken.ValueType, typeToken.Token))
{
return(ParseTreeValue.CreateOverflowExpression(expression, declaredTypeName));
}
return(ParseTreeValue.CreateValueType(typeToken));
}
return(ParseTreeValue.CreateExpression(new TypeTokenPair(declaredTypeName, expression)));
}
public IParseTreeValue CreateValueType(string expression, string declaredTypeName)
{
if (expression is null || declaredTypeName is null)
{
throw new ArgumentNullException();
}
return(ParseTreeValue.CreateValueType(new TypeTokenPair(declaredTypeName, expression)));
}
public static bool TryLetCoerce(this IParseTreeValue parseTreeValue, string destinationType, out IParseTreeValue newValue)
{
newValue = null;
if (LetCoerce.TryCoerceToken((parseTreeValue.ValueType, parseTreeValue.Token), destinationType, out var valueText))
{
newValue = ParseTreeValue.CreateValueType(new TypeTokenPair(destinationType, valueText));
return(true);
}
return(false);
}
public IParseTreeValue Create(string valueToken)
{
if (valueToken is null || valueToken.Equals(string.Empty))
{
throw new ArgumentException();
}
if (HasTypeHint(valueToken, out string valueType))
{
var vToken = valueToken.Remove(valueToken.Length - 1);
var conformedTypeTokenPair = TypeTokenPair.ConformToType(valueType, vToken);
if (conformedTypeTokenPair.HasValue)
{
return(ParseTreeValue.CreateValueType(conformedTypeTokenPair));
}
return(ParseTreeValue.CreateExpression(new TypeTokenPair(valueType, vToken)));
}
if (TypeTokenPair.TryParse(valueToken, out TypeTokenPair result))
{
return(ParseTreeValue.CreateValueType(result));
}
return(ParseTreeValue.CreateExpression(new TypeTokenPair(null, valueToken)));
}