Class Util


  • public final class Util
    extends java.lang.Object
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private Util()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      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, java.io.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, java.io.PrintStream pw)
      Display a tree for the node.
      private static void displayAttributes​(Node node, CodegenPrinter pr)  
      static java.lang.String getNodeIdString​(Node obj)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • Util

        private Util()
    • 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,
                                     java.io.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.
      • displayAttributes

        private static void displayAttributes​(Node node,
                                              CodegenPrinter pr)
      • getNodeIdString

        public static java.lang.String getNodeIdString​(Node obj)
      • display

        public static void display​(Node node,
                                   java.io.PrintStream pw)
        Display a tree for the node.