/// <summary>
/// Parse the 'condOr2' rule.
/// </summary>
/// <remarks>
///
/// condOr2 ::= '||' condAnd condOr2 |
/// {empty}
///
/// </remarks>
/// <returns>Parsed node.</returns>
protected virtual EvalNode ParseCondOr2()
{
if (Tokeniser.Next(TokenType.DoubleOr))
{
EvalNode op = new EvalNodeCondLogicOp(EvalNodeCondLogicOp.CompareOp.Or, ParseCondAnd(), Language);
EvalNode or2 = ParseCondOr2();
if (or2 != null)
or2.Prepend(op);
return op;
}
return null;
}
/// <summary>
/// Parse the 'logicalOr2VB' rule.
/// </summary>
/// <remarks>
///
/// logicalOr2VB ::= 'Or' logicalAndVB logicalOr2VB |
/// 'OrElse' logicalAndVB logicalOr2VB |
/// {empty}
///
/// </remarks>
/// <returns>Parsed node.</returns>
protected virtual EvalNode ParseLogicalOr2VB()
{
if (Tokeniser.Next(TokenType.KeywordOr))
{
EvalNode op = new EvalNodeBinaryOp(EvalNodeBinaryOp.BinaryOp.LogicalOr, ParseLogicalAndVB(), Language);
EvalNode or2 = ParseLogicalOr2VB();
if (or2 != null)
or2.Prepend(op);
return op;
}
if (Tokeniser.Next(TokenType.KeywordOrElse))
{
EvalNode op = new EvalNodeCondLogicOp(EvalNodeCondLogicOp.CompareOp.Or, ParseLogicalAndVB(), Language);
EvalNode or2 = ParseLogicalOr2VB();
if (or2 != null)
or2.Prepend(op);
return op;
}
return null;
}
/// <summary>
/// Parse the 'condAnd2' rule.
/// </summary>
/// <remarks>
///
/// condAnd2 ::= '&&' logicalOr condAnd2 |
/// {empty}
///
/// </remarks>
/// <returns>Parsed node.</returns>
protected virtual EvalNode ParseCondAnd2()
{
if (Tokeniser.Next(TokenType.DoubleAnd))
{
EvalNode op = new EvalNodeCondLogicOp(EvalNodeCondLogicOp.CompareOp.And, ParseLogicalOr(), Language);
EvalNode and2 = ParseCondAnd2();
if (and2 != null)
and2.Prepend(op);
return op;
}
return null;
}
/// <summary>
/// Parse the 'logicalAnd2VB' rule.
/// </summary>
/// <remarks>
///
/// logicalAnd2VB ::= 'And' logicalNotVB logicalAnd2VB |
/// 'AndAlso' logicalNotVB logicalAnd2VB |
/// {empty}
///
/// </remarks>
/// <returns>Parsed node.</returns>
protected virtual EvalNode ParseLogicalAnd2VB()
{
if (Tokeniser.Next(TokenType.KeywordAnd))
{
EvalNode op = new EvalNodeBinaryOp(EvalNodeBinaryOp.BinaryOp.LogicalAnd, ParseLogicalNotVB(), Language);
EvalNode and2 = ParseLogicalAnd2VB();
if (and2 != null)
and2.Prepend(op);
return op;
}
if (Tokeniser.Next(TokenType.KeywordAndAlso))
{
EvalNode op = new EvalNodeCondLogicOp(EvalNodeCondLogicOp.CompareOp.And, ParseLogicalNotVB(), Language);
EvalNode and2 = ParseLogicalAnd2VB();
if (and2 != null)
and2.Prepend(op);
return op;
}
return null;
}
