public static LLVMValueRef Literal(TokenType tokenType, string value, PrimitiveType type)
{
// Token value is an integer.
if (tokenType == TokenType.LiteralInteger)
{
return(LLVM.ConstInt(type.Emit(), ulong.Parse(value), false));
}
// Token value is a decimal.
else if (tokenType == TokenType.LiteralDecimal)
{
return(LLVM.ConstReal(type.Emit(), double.Parse(value)));
}
// Token value is a string.
else if (tokenType == TokenType.LiteralString)
{
return(LLVM.ConstString(value, (uint)value.Length, false));
}
// Token value is a boolean.
else if (TokenIdentifier.IsBoolean(tokenType))
{
// Create the boolean value.
uint boolValue;
// True.
if (tokenType == TokenType.KeywordTrue)
{
boolValue = 1;
}
// False.
else if (tokenType == TokenType.KeywordFalse)
{
boolValue = 0;
}
// Ensure token type is a boolean representative.
else
{
throw new Exception($"Unexpected boolean value; Expected true or false token type but got {tokenType}");
}
// Create and return the resulting constant.
return(LLVM.ConstInt(type.Emit(), boolValue, false));
}
// At this point, type is unsupported.
throw new Exception("Cannot resolve unsupported type");
}
public static bool IsType(Token token, ParserContext context)
{
return(TokenIdentifier.IsPrimitiveType(token.Type) ||
context.SymbolTable.structs.Contains(token.Value));
}
/// <summary>
/// Determine if the provided token is
/// representing a type
/// </summary>
public static bool IsPrimitiveType(Token token)
{
return(TokenIdentifier.IsPrimitiveType(token.Type));
}
public static bool IsBoolean(Token token)
{
return(TokenIdentifier.IsBoolean(token.Type));
}
public static bool IsNumeric(Token token)
{
return(TokenIdentifier.IsNumeric(token.Type));
}