public override object VisitForStmt([NotNull] CalculatorParser.ForStmtContext context)
{
var stack = new Stack(m_stack);
var oldStack = m_stack;
m_stack = stack;
if (context.declaration() != null)
{
context.declaration().Accept(this);
}
while (context.expression() is null || (bool)context.expression().Accept(this))
{
context.block().Accept(this);
if (m_broken)
{
m_broken = false;
break;
}
if (context.forAssign() != null)
{
context.forAssign().Accept(this);
}
if (m_continued)
{
m_continued = false;
continue;
}
}
m_stack = oldStack;
return(null);
}
/// <summary>
/// Visit a parse tree produced by <see cref="CalculatorParser.forStmt"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitForStmt([NotNull] CalculatorParser.ForStmtContext context)
{
return(VisitChildren(context));
}