public override AstVisitAction VisitForStatement(ForStatementAst forStatementAst)
{
/*
* The controlling expression for-condition must have type bool or
* be implicitly convertible to that type. The loop body, which
* consists of statement-block, is executed repeatedly while the
* controlling expression tests True. The controlling expression
* is evaluated before each execution of the loop body.
*
* Expression for-initializer is evaluated before the first
* evaluation of the controlling expression. Expression
* for-initializer is evaluated for its side effects only; any
* value it produces is discarded and is not written to the
* pipeline.
*
* Expression for-iterator is evaluated after each execution of
* the loop body. Expression for-iterator is evaluated for its
* side effects only; any value it produces is discarded and is
* not written to the pipeline.
*
* If expression for-condition is omitted, the controlling
* expression tests True.
*/
if (forStatementAst.Initializer != null)
{
EvaluateAst(forStatementAst.Initializer);
}
while (forStatementAst.Condition != null ?
LanguagePrimitives.ConvertTo<bool>(EvaluateAst(forStatementAst.Condition))
: true)
{
// TODO: pass loop label
if (!EvaluateLoopBodyAst(forStatementAst.Body, null))
{
break;
}
if (forStatementAst.Iterator != null)
{
EvaluateAst(forStatementAst.Iterator);
}
}
return AstVisitAction.SkipChildren;
}
