private static Expression makeSimpleOperand(Token token, ArgsList argsList)
{
switch (token.Type)
{
case TokenType.DecLiteral:
return(new LiteralNode(ExpressionValue.makeValue(long.Parse(token.Value))));
case TokenType.HexLiteral:
return(new LiteralNode(ExpressionValue.makeValue(
long.Parse(token.Value.Substring(1), NumberStyles.HexNumber))));
case TokenType.CharLiteral:
return(new LiteralNode(ExpressionValue.makeValue(
token.Value.Substring(1, token.Value.Length - 2)[0])));
case TokenType.StringLiteral:
return(new LiteralNode(ExpressionValue.makeValue(
token.Value.Substring(1, token.Value.Length - 2))));
case TokenType.SpecialRegister:
return(new LiteralNode(ExpressionValue.makeSpecialRegister(token.Value)));
case TokenType.LocationPtr:
if (!argsList.Contains(token.Value))
{
argsList.Add(token.Value);
}
return(new ArgumentRefNode(ExpressionValue.makeVaribleRef(token.Value)));
case TokenType.LocalBackRef: {
var refName = "@" + token.Value + "_" + (++_uniqSeed);
if (!argsList.Contains(token.Value))
{
argsList.Add(refName);
}
return(new ArgumentRefNode(ExpressionValue.makeVaribleRef(refName)));
}
case TokenType.LocalForwRef: {
var refName = "@" + token.Value + "_" + (++_uniqSeed);
if (!argsList.Contains(token.Value))
{
argsList.Add(refName);
}
return(new ArgumentRefNode(ExpressionValue.makeVaribleRef(refName)));
}
case TokenType.LabelRef:
if (!argsList.Contains(token.Value))
{
argsList.Add(token.Value);
}
return(new ArgumentRefNode(ExpressionValue.makeVaribleRef(token.Value)));
default:
throw new Exception("Can't make operand from token " + token);
}
}
public void PushBack(Value val)
{
ArgsList.Add(val);
}