/// <summary>
/// http://www.ecma-international.org/ecma-262/5.1/#sec-12.6.2
/// </summary>
/// <param name="whileStatement"></param>
/// <returns></returns>
public Completion ExecuteWhileStatement(WhileStatement whileStatement)
{
JsValue v = Undefined.Instance;
while (true)
{
var exprRef = _engine.EvaluateExpression(whileStatement.Test);
if (!TypeConverter.ToBoolean(_engine.GetValue(exprRef)))
{
return new Completion(Completion.Normal, v, null);
}
var stmt = ExecuteStatement(whileStatement.Body);
if (stmt.Value != null)
{
v = stmt.Value;
}
if (stmt.Type != Completion.Continue || stmt.Identifier != whileStatement.LabelSet)
{
if (stmt.Type == Completion.Break && (stmt.Identifier == null || stmt.Identifier == whileStatement.LabelSet))
{
return new Completion(Completion.Normal, v, null);
}
if (stmt.Type != Completion.Normal)
{
return stmt;
}
}
}
}
private void EmitWhileStatement(WhileStatement s)
{
_noeolstmt = true;
Write("while(");
Emit(s.Test);
Write(") ");
_noeolstmt = false;
Emit(s.Body);
}
