/// <summary>
/// Notifies this context when exiting a loop.
/// </summary>
internal void ExitLoop(ScriptLoopStatementBase loop)
{
OnExitLoop(loop);
PopVariableScope(ScriptVariableScope.Loop);
_loops.Pop();
_loopStep = 0;
}
internal void EnterLoop(ScriptLoopStatementBase loop)
{
if (loop == null)
{
throw new ArgumentNullException(nameof(loop));
}
loops.Push(loop);
PushVariableScope(ScriptVariableScope.Loop);
}
internal bool StepLoop(ScriptLoopStatementBase loop)
{
Debug.Assert(_loops.Count > 0);
_loopStep++;
if (_loopStep > LoopLimit)
{
var currentLoopStatement = _loops.Peek();
throw new ScriptRuntimeException(currentLoopStatement.Span, $"Exceeding number of iteration limit `{LoopLimit}` for loop statement."); // unit test: 215-for-statement-error1.txt
}
return(OnStepLoop(loop));
}
internal bool StepLoop(ScriptLoopStatementBase loop)
{
#if DEBUG
Debug.Assert(_loops.Count > 0);
#endif
_loopStep++;
if (_loopStep > LoopLimit)
{
ScriptLoopStatementBase currentLoopStatement = _loops.Peek();
throw new ScriptRuntimeException(currentLoopStatement.Span, string.Format(RS.IterationDepthLimitReached, LoopLimit, currentLoopStatement)); // unit test: 215-for-statement-error1.txt
}
return(OnStepLoop(loop));
}
/// <summary>
/// Called when entering a loop.
/// </summary>
/// <param name="loop">The loop expression object</param>
protected virtual void OnEnterLoop(ScriptLoopStatementBase loop)
{
}
/// <summary>
/// Called when stepping into a loop.
/// </summary>
/// <param name="loop">The loop expression object</param>
/// <returns><c>true</c> to continue loop; <c>false</c> to break the loop. Default is <c>true</c></returns>
protected virtual bool OnStepLoop(ScriptLoopStatementBase loop)
{
return(true);
}
/// <summary>
/// Extracts a statement
/// </summary>
/// <param name="scriptStatements">Statement list to fill</param>
/// <param name="statement">Statement to check</param>
private static void ExtractStatement(List <ScriptStatement> scriptStatements, ScriptStatement statement)
{
if (!(statement is ScriptRawStatement))
{
scriptStatements.Add(statement);
}
if (statement is ScriptLoopStatementBase)
{
ScriptLoopStatementBase loopStatement = (ScriptLoopStatementBase)statement;
foreach (ScriptNode curChild in loopStatement.Children)
{
ScriptStatement curStatement = curChild as ScriptStatement;
if (curStatement != null)
{
ExtractStatement(scriptStatements, curStatement);
}
}
}
else if (statement is ScriptIfStatement)
{
ScriptIfStatement ifStatement = (ScriptIfStatement)statement;
if (ifStatement.Then != null)
{
scriptStatements.AddRange(ExtractStatementsFromList(ifStatement.Then.Statements));
}
if (ifStatement.Else != null)
{
ExtractStatement(scriptStatements, ifStatement.Else);
}
}
else if (statement is ScriptElseStatement)
{
ScriptElseStatement elseStatement = (ScriptElseStatement)statement;
if (elseStatement.Body != null)
{
scriptStatements.AddRange(ExtractStatementsFromList(elseStatement.Body.Statements));
}
}
else if (statement is ScriptCaptureStatement)
{
ScriptCaptureStatement captureStatement = (ScriptCaptureStatement)statement;
if (captureStatement.Body != null)
{
scriptStatements.AddRange(ExtractStatementsFromList(captureStatement.Body.Statements));
}
}
else if (statement is ScriptCaseStatement)
{
ScriptCaseStatement caseStatement = (ScriptCaseStatement)statement;
if (caseStatement.Body != null)
{
scriptStatements.AddRange(ExtractStatementsFromList(caseStatement.Body.Statements));
}
}
else if (statement is ScriptFunction)
{
ScriptFunction functionStatement = (ScriptFunction)statement;
if (functionStatement.Body != null)
{
ExtractStatement(scriptStatements, functionStatement.Body);
}
}
else if (statement is ScriptWhenStatement)
{
ScriptWhenStatement whenStatement = (ScriptWhenStatement)statement;
if (whenStatement.Body != null)
{
scriptStatements.AddRange(ExtractStatementsFromList(whenStatement.Body.Statements));
}
}
else if (statement is ScriptWithStatement)
{
ScriptWithStatement withStatement = (ScriptWithStatement)statement;
if (withStatement.Body != null)
{
scriptStatements.AddRange(ExtractStatementsFromList(withStatement.Body.Statements));
}
}
else if (statement is ScriptWrapStatement)
{
ScriptWrapStatement wrapStatement = (ScriptWrapStatement)statement;
if (wrapStatement.Body != null)
{
scriptStatements.AddRange(ExtractStatementsFromList(wrapStatement.Body.Statements));
}
}
else if (statement is ScriptBlockStatement)
{
ScriptBlockStatement blockStatement = (ScriptBlockStatement)statement;
scriptStatements.AddRange(ExtractStatementsFromList(blockStatement.Statements));
}
}
