/**
* Handles the parser adding a child node to a production. This
* method calls the appropriate analyzer callback. Note that this
* method will not call any callback if an error requiring
* recovery has ocurred.
*
* @param node the parent parse tree node
* @param child the child parse tree node, or null
*/
internal void AddNode(Production node, Node child)
{
if (errorRecovery >= 0)
{
// Do nothing
}
else if (node.IsHidden())
{
node.AddChild(child);
}
else if (child != null && child.IsHidden())
{
for (int i = 0; i < child.Count; i++)
{
AddNode(node, child[i]);
}
}
else
{
try {
analyzer.Child(node, child);
} catch (ParseException e) {
AddError(e, false);
}
}
}
/**
* Handles the parser entering a production. This method calls the
* appropriate analyzer callback if the node is not hidden. Note
* that this method will not call any callback if an error
* requiring recovery has ocurred.
*
* @param node the parse tree node
*/
internal void EnterNode(Node node)
{
if (!node.IsHidden() && errorRecovery < 0)
{
try {
analyzer.Enter(node);
} catch (ParseException e) {
AddError(e, false);
}
}
}
/**
* Handles the parser leaving a production. This method calls the
* appropriate analyzer callback if the node is not hidden, and
* returns the result. Note that this method will not call any
* callback if an error requiring recovery has ocurred.
*
* @param node the parse tree node
*
* @return the parse tree node, or
* null if no parse tree should be created
*/
internal Node ExitNode(Node node)
{
if (!node.IsHidden() && errorRecovery < 0)
{
try {
return(analyzer.Exit(node));
} catch (ParseException e) {
AddError(e, false);
}
}
return(node);
}
/**
* Handles the parser adding a child node to a production. This
* method calls the appropriate analyzer callback. Note that this
* method will not call any callback if an error requiring
* recovery has ocurred.
*
* @param node the parent parse tree node
* @param child the child parse tree node, or null
*/
internal void AddNode(Production node, Node child) {
if (errorRecovery >= 0) {
// Do nothing
} else if (node.IsHidden()) {
node.AddChild(child);
} else if (child != null && child.IsHidden()) {
for (int i = 0; i < child.Count; i++) {
AddNode(node, child[i]);
}
} else {
try {
analyzer.Child(node, child);
} catch (ParseException e) {
AddError(e, false);
}
}
}
/**
* Handles the parser leaving a production. This method calls the
* appropriate analyzer callback if the node is not hidden, and
* returns the result. Note that this method will not call any
* callback if an error requiring recovery has ocurred.
*
* @param node the parse tree node
*
* @return the parse tree node, or
* null if no parse tree should be created
*/
internal Node ExitNode(Node node) {
if (!node.IsHidden() && errorRecovery < 0) {
try {
return analyzer.Exit(node);
} catch (ParseException e) {
AddError(e, false);
}
}
return node;
}
/**
* Handles the parser entering a production. This method calls the
* appropriate analyzer callback if the node is not hidden. Note
* that this method will not call any callback if an error
* requiring recovery has ocurred.
*
* @param node the parse tree node
*/
internal void EnterNode(Node node) {
if (!node.IsHidden() && errorRecovery < 0) {
try {
analyzer.Enter(node);
} catch (ParseException e) {
AddError(e, false);
}
}
}