/// <summary>
/// Cria uma nova expressão define um char como texto.
/// </summary>
/// <param name="container"></param>
/// <param name="beginPoint"></param>
/// <param name="line"></param>
/// <param name="command"></param>
public Expression(ExpressionContainer container, int beginPoint, ExpressionLine line, char command)
{
_container = container;
_beginPoint = beginPoint;
_line = line;
_line.Expressions.Add(this);
_length = 1;
_text = new string(command, 1);
}
/// <summary>
/// Cria uma nova expressão com o texto informado.
/// </summary>
/// <param name="container"></param>
/// <param name="beginPoint"></param>
/// <param name="line"></param>
/// <param name="text"></param>
public Expression(ExpressionContainer container, int beginPoint, ExpressionLine line, string text)
{
_container = container;
_beginPoint = beginPoint;
_length = text == null ? 0 : text.Length;
_line = line;
_line.Expressions.Add(this);
_text = text;
_token = (int)TokenID.Identifier;
}
/// <summary>
/// Cria uma nova expressão recuperando do comando o segmento de texto e definindo o identificador do token.
/// </summary>
/// <param name="container"></param>
/// <param name="beginPoint"></param>
/// <param name="length"></param>
/// <param name="line"></param>
/// <param name="command"></param>
/// <param name="tokenID"></param>
public Expression(ExpressionContainer container, int beginPoint, int length, ExpressionLine line, string command, int tokenID)
{
_container = container;
_beginPoint = beginPoint;
_length = length;
_line = line;
_line.Expressions.Add(this);
_text = command.Substring(beginPoint, length);
_token = tokenID;
}
/// <summary>
/// Construtor padrão.
/// </summary>
/// <param name="container">Container da expressão.</param>
/// <param name="beginPoint"></param>
/// <param name="length"></param>
/// <param name="line"></param>
/// <param name="command"></param>
/// <param name="containerChar"></param>
public SpecialContainerExpression(ExpressionContainer container, int beginPoint, int length, ExpressionLine line, string command, char containerChar) : base(container, beginPoint, length, line, command)
{
Token = (int)TokenID.StringLiteral;
_containerChar = containerChar;
}
public TabExpression(ExpressionContainer container, int beginPoint, ExpressionLine line, string command) : base(container, beginPoint, 1, line, command)
{
}
