public void ExitExpression(QueryParser.ExpressionContext context)
{
CompileLeftAssociativeOperator(context.ADD_SUB(), _expressions,
(opNode, left, right) =>
{
var op = opNode.Symbol;
BinaryOperatorExpression value = null;
switch (op.Text)
{
case "+":
value = new AdditionExpression(op.Line, op.Column, left, right);
break;
case "-":
value = new SubtractionExpression(op.Line, op.Column, left, right);
break;
}
Trace.Assert(value != null, "Invalid addition operator " + op.Text);
return(value);
});
}
/// <summary>
/// Exit a parse tree produced by <see cref="QueryParser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitExpression([NotNull] QueryParser.ExpressionContext context)
{
}
public void EnterExpression(QueryParser.ExpressionContext context)
{
}