private Exp GetExp()
{
Token operatorToken = _remainedTokens.Pop();
bool isComposite = operatorToken.Type == TokenType.LeftBracket;
if (isComposite)
{
operatorToken = _remainedTokens.Pop();
}
bool againLeftBracket = operatorToken.Type == TokenType.LeftBracket;
Exp exp;
if (againLeftBracket)
{
exp = new FuncExp();
_remainedTokens.Push(new Token(TokenType.LeftBracket, "("));
var functionToEvaluate = GetExp();
exp.Children.Add(functionToEvaluate);
}
else
{
exp = GetExpInstance(operatorToken);
}
if (isComposite)
{
List <Exp> children = GetChildren(_remainedTokens);
exp.Children.AddRange(children);
}
return(exp);
}
private Exp ComposeExpression(FuncExp exp, Dictionary <string, DefineExp> context)
{
Exp funcToEvaluate = exp.Children[0];
if (funcToEvaluate is IfExp)
{
Exp composedExp = CalculateIf((IfExp)funcToEvaluate, context);
composedExp.Children.AddRange(exp.Children.Skip(1));
return(composedExp);
}
throw new NotImplementedException("ComposeExpression only supports if right now");
}
