public override AstVisitAction VisitIfStatement(IfStatementAst ifStatementAst)
{
//// 8.3 The if statement
//// The pipeline controlling expressions must have type bool or be implicitly convertible to that
//// type. The else-clause is optional. There may be zero or more elseif-clauses.
////
//// If the top-level pipeline tests True, then its statement-block is executed and execution of
//// the statement terminates. Otherwise, if an elseif-clause is present, if its pipeline tests
//// True, then its statement-block is executed and execution of the statement terminates.
//// Otherwise, if an else-clause is present, its statement-block is executed.
foreach (var clause in ifStatementAst.Clauses)
{
var condition = EvaluateAst(clause.Item1);
if (condition == null)
{
continue;
}
if (condition.GetType() == typeof(bool))
{
if ((bool)condition)
{
this._pipelineCommandRuntime.WriteObject(EvaluateAst(clause.Item2));
return(AstVisitAction.SkipChildren);
}
}
else
{
throw new NotImplementedException(ifStatementAst.ToString());
}
}
if (ifStatementAst.ElseClause != null)
{
// iterating over a statement list should be its own method.
foreach (var statement in ifStatementAst.ElseClause.Statements)
{
this._pipelineCommandRuntime.WriteObject(EvaluateAst(statement));
}
}
return(AstVisitAction.SkipChildren);
}
public override AstVisitAction VisitIfStatement(IfStatementAst ifStmtAst)
{
Console.WriteLine("Visited an IfStatementAst.");
Console.WriteLine(" " + ifStmtAst.ToString().Replace(Environment.NewLine, Environment.NewLine + " "));
return(AstVisitAction.Continue);
}