public override string ToCode(ToCodeFormat format)
{
StringBuilder sb = new StringBuilder();
if (Parser.Settings.LocalRenaming != LocalRenaming.KeepAll &&
Parser.Settings.IsModificationAllowed(TreeModifications.LocalRenaming))
{
// we're hyper-crunching.
// we want to output our label as per our nested level.
// top-level is "a", next level is "b", etc.
// we don't need to worry about collisions with variables.
sb.Append(CrunchEnumerator.CrunchedLabel(m_nestCount));
}
else
{
// not hypercrunching -- just output our label
sb.Append(m_label);
}
sb.Append(':');
if (m_statement != null)
{
// don't sent the AlwaysBraces down the chain -- we're handling it here.
// but send any other formats down -- we don't know why they were sent.
sb.Append(m_statement.ToCode(format));
}
return(sb.ToString());
}
internal virtual void ValidateGeneratedNames()
{
// check all the variables defined within this scope.
// we're looking for uncrunched generated fields.
foreach (JSVariableField variableField in m_fieldTable)
{
JSLocalField localField = variableField as JSLocalField;
if (localField != null && localField.IsGenerated &&
localField.CrunchedName == null)
{
// we need to rename this field.
// first we need to walk all the child scopes depth-first
// looking for references to this field. Once we find a reference,
// we then need to add all the other variables referenced in those
// scopes and all above them (from here) so we know what names we
// can't use.
Dictionary <string, string> avoidTable = new Dictionary <string, string>();
GenerateAvoidList(avoidTable, localField.Name);
// now that we have our avoid list, create a crunch enumerator from it
CrunchEnumerator crunchEnum = new CrunchEnumerator(avoidTable);
// and use it to generate a new name
localField.CrunchedName = crunchEnum.NextName();
}
}
// recursively traverse through our children
foreach (ActivationObject scope in m_childScopes)
{
scope.ValidateGeneratedNames();
}
}
internal virtual void HyperCrunch()
{
// if we're not known at compile time, then we can't crunch
// the local variables in this scope, because we can't know if
// something will reference any of it at runtime.
// eval is something that will make the scope unknown because we
// don't know what eval will evaluate to until runtime
if (m_isKnownAtCompileTime)
{
// get an array of all the uncrunched local variables defined in this scope
JSLocalField[] localFields = GetUncrunchedLocals();
if (localFields.Length > 0)
{
// create a crunch-name enumerator, taking into account our verboten set
CrunchEnumerator crunchEnum = new CrunchEnumerator(Verboten);
for (int ndx = 0; ndx < localFields.Length; ++ndx)
{
JSLocalField localField = localFields[ndx];
// if we are an unambiguous reference to a named function expression and we are not
// referenced by anyone else, then we can just skip this variable because the
// name will be stripped from the output anyway.
// we also always want to crunch "placeholder" fields.
if (localField.CanCrunch &&
(localField.RefCount > 0 || localField.IsDeclared || localField.IsPlaceholder ||
!(Parser.Settings.RemoveFunctionExpressionNames && Parser.Settings.IsModificationAllowed(TreeModifications.RemoveFunctionExpressionNames))))
{
localFields[ndx].CrunchedName = crunchEnum.NextName();
}
}
}
}
// then traverse through our children
foreach (ActivationObject scope in m_childScopes)
{
scope.HyperCrunch();
}
}
public override string ToCode(ToCodeFormat format)
{
StringBuilder sb = new StringBuilder();
sb.Append("continue");
if (m_label != null)
{
sb.Append(' ');
if (Parser.Settings.LocalRenaming != LocalRenaming.KeepAll &&
Parser.Settings.IsModificationAllowed(TreeModifications.LocalRenaming))
{
// hypercrunched -- only depends on nesting level
sb.Append(CrunchEnumerator.CrunchedLabel(m_nestLevel));
}
else
{
// not hypercrunched -- just output label
sb.Append(m_label);
}
}
return(sb.ToString());
}