org.glassfish.pfl.dynamic.codegen.impl
Class Util

java.lang.Object
  org.glassfish.pfl.dynamic.codegen.impl.Util

public final class Util
extends Object

Method Summary

static void	checkScope(ExpressionInternal expr) Throw an exception if any ExpressionInternal reachable from expr contains a Variable that is out of scope.
static void	checkTree(Node node, PrintStream pw) Check that node is really a tree, that is, when we traverse it with the visitor, we never encounter the same node twice.
static void	close(Node node) Make sure that all variables reachable from node are marked not available, indicating that they are no longer in scope.
static void	display(Node node, PrintStream pw) Display a tree for the node.
static String	getNodeIdString(Node obj)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

close

public static void close(Node node)

Make sure that all variables reachable from node are marked not available, indicating that they are no longer in scope. Note that only defining occurrences of variables are to be considered here, as a scope that merely references a variable may be closed while the containing defining scope is still open.

checkScope

public static void checkScope(ExpressionInternal expr)

Throw an exception if any ExpressionInternal reachable from expr contains a Variable that is out of scope. Note that this is only useful for Expressions.

checkTree

public static void checkTree(Node node,
                             PrintStream pw)

Check that node is really a tree, that is, when we traverse it with the visitor, we never encounter the same node twice.

getNodeIdString

public static String getNodeIdString(Node obj)

display

public static void display(Node node,
                           PrintStream pw)

Display a tree for the node.