public InterVar(string name, InterVarType type, bool changeable)
{
this.name = name;
this.type = type;
this.changeable = changeable;
depthInBrackets = 0;
}
public static ICommand Build(List <Token> tokens)
{
tokens.RemoveAt(0);
if (tokens.Count() > 3)
{
throw new SyntaxErrorException("ERROR! Command 'swap' is too long.");
}
if (tokens.Count() < 3)
{
throw new SyntaxErrorException("ERROR! Command 'swap' do not contain all necessary information.");
}
if (!tokens[1].GetTokenType().Equals(TokenType.With) && !tokens[1].GetTokenType().Equals(TokenType.And))
{
throw new SyntaxErrorException("ERROR! Command 'swap' do not have variables separated by keyword 'with' or 'and'.");
}
if (!tokens[0].GetTokenType().Equals(TokenType.Variable))
{
throw new SyntaxErrorException("ERROR! Command 'swap' do not have name of first variable to swap.");
}
if (!tokens[2].GetTokenType().Equals(TokenType.Variable))
{
throw new SyntaxErrorException("ERROR! Command 'swap' do not have name of second variable to swap.");
}
string leftVariable = tokens[2].GetContent();
string rightVariable = tokens[0].GetContent();
if (!InterVariables.GetInstance().Contains(leftVariable))
{
throw new SyntaxErrorException("ERROR! In command 'swap' variable " + leftVariable + " do not exist.");
}
if (!InterVariables.GetInstance().Contains(rightVariable))
{
throw new SyntaxErrorException("ERROR! In command 'swap' variable " + rightVariable + " do not exist.");
}
InterVarType leftType = InterVariables.GetInstance().GetVarType(leftVariable);
InterVarType rightType = InterVariables.GetInstance().GetVarType(rightVariable);
if (!leftType.Equals(rightType))
{
throw new SyntaxErrorException("ERROR! Variables " + leftVariable + " and " + rightVariable + " cannot be swapped, because they are of different type.");
}
return(new Swap(leftVariable, rightVariable));
}
public bool ContainsChangable(string name, InterVarType type)
{
if (!Contains(name, type))
{
return(false);
}
InterVar iv = variables.First(v => name.Equals(v.GetName()));
if (iv.IsChangeable())
{
return(true);
}
return(false);
}
public bool Contains(string name, InterVarType type)
{
if (variables.Where(v => name.Equals(v.GetName())).Count() == 0)
{
return(false);
}
InterVar iv = variables.First(v => name.Equals(v.GetName()));
switch (type)
{
case InterVarType.Bool:
{
return(iv.IsBool() ? true : false);
}
case InterVarType.Number:
{
return(iv.IsNumber() ? true : false);
}
case InterVarType.Time:
{
return(iv.IsTime() ? true : false);
}
case InterVarType.String:
{
return(iv.IsString() ? true : false);
}
case InterVarType.List:
{
return(iv.IsList() ? true : false);
}
}
return(false);
}
public void TurnToList()
{
type = InterVarType.List;
}
public void Add(string name, InterVarType type)
{
variables.Add(new InterVar(name, type, true));
}