public NonTerninalExp CreateCommand(List <Token> tokens)
{
var closeParenthesisIndex = TokenHelper.GetIndexPairParanthesis(tokens, 1);
var exp = TerminalExpressionAnalyser.Analyse(tokens.GetRange(2, closeParenthesisIndex - 2));
var command = new ConditionCommand(exp);
var closeBracketIndex = TokenHelper.GetIndexPairBracket(tokens, closeParenthesisIndex + 1);
command.SetPositiveNext(SyntaxAnalyser.Analyse(tokens.GetRange(closeParenthesisIndex + 1,
tokens.Count - closeParenthesisIndex - 1)));
if (tokens[closeBracketIndex + 1].TokenType == TokenType.Else)
{
if (tokens[closeBracketIndex + 2].TokenType != TokenType.If)
{
ConditionCommand com = new ConditionCommand(new StringConstExp("true"));
com.SetPositiveNext(SyntaxAnalyser.Analyse(tokens.GetRange(closeBracketIndex + 2,
tokens.Count - closeBracketIndex - 2)));
com.SetNegativeNext(com.GetPositiveNext().GetNext());
command.SetNegativeNext(com);
}
else
{
command.SetNegativeNext(SyntaxAnalyser.Analyse(tokens.GetRange(closeBracketIndex + 2,
tokens.Count - closeBracketIndex - 2)));
}
}
else
{
command.SetNegativeNext(SyntaxAnalyser.Analyse(tokens.GetRange(closeBracketIndex + 1,
tokens.Count - closeBracketIndex - 1)));
}
return(command);
}
public NonTerninalExp CreateCommand(List <Token> tokens)
{
if (tokens[1].TokenType == TokenType.If)
{
NonTerninalExp com = new ConditionCommandPattern().CreateCommand(tokens.GetRange(
1, tokens.Count - 1));
while (com is ConditionCommand)
{
com = ((ConditionCommand)com).GetNegativeNext();
}
return(com);
}
else
{
ConditionCommand com = new ConditionCommand(new StringConstExp("false"));
com.SetPositiveNext(SyntaxAnalyser.Analyse(tokens.GetRange(1,
tokens.Count - 1)));
com.SetNegativeNext(com.GetPositiveNext().GetNext());
return(com);
}
}