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Java Source Code / Java Documentation » Parser » Rats Parser Generators » xtc.tree 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   xtc.tree.Node
      xtc.tree.GNode

GNode
abstract public class GNode extends Node (Code)
A generic node in an abstract syntax tree.

A note on memory conservation: Generic nodes created through the GNode.create(String) or GNode.create(String,int) methods can have a variable number of children. While such nodes provide considerable flexibility in creating and managing an abstract syntax tree, their implementation also has a relatively high memory and thus performance overhead. Consequently, this class provides another set of create() methods, which directly take the new node's children as arguments and return nodes specialized for that number of children. After creation, the number of children cannot be changed anymore. Code using generic nodes can test whether a node supports a variable number of children through GNode.hasVariable() and convert fixed size nodes into variable sized nodes through GNode.ensureVariable(GNode) .
author:
   Robert Grimm
version:
   $Revision: 1.48 $


Inner Class :abstract static class Fixed extends GNode
Inner Class :static class Fixed0 extends Fixed
Inner Class :static class Fixed1 extends Fixed
Inner Class :static class Fixed2 extends Fixed
Inner Class :static class Fixed3 extends Fixed
Inner Class :static class Fixed4 extends Fixed
Inner Class :static class Fixed5 extends Fixed
Inner Class :static class Fixed6 extends Fixed
Inner Class :static class Fixed7 extends Fixed
Inner Class :static class Fixed8 extends Fixed
Inner Class :static class Variable extends GNode

Field Summary
final public static  intMAX_FIXED
     The maximum number of children for generic nodes that are optimized to hold a fixed number of children.
final  Stringname
     The name.

Constructor Summary
 GNode(String name)
     Create a new generic node with the specified name.

Method Summary
final public static  GNodecast(Object o)
     Cast the specified object to a generic node.
public static  GNodecreate(String name)
     Create a new generic node with the specified name.
public static  GNodecreate(String name, int capacity)
     Create a new generic node with the specified name.
public static  GNodecreate(String name, boolean variable)
     Create a new generic node with the specified name.
public static  GNodecreate(String name, Object child)
     Create a new generic node with the specified name and child.
public static  GNodecreate(String name, Object c1, Object c2)
     Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
public static  GNodecreate(String name, Object c1, Object c2, Object c3)
     Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
public static  GNodecreate(String name, Object c1, Object c2, Object c3, Object c4)
     Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child.
public static  GNodecreate(String name, Object c1, Object c2, Object c3, Object c4, Object c5)
     Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child.
Parameters:
  c5 - The fifth child.
public static  GNodecreate(String name, Object c1, Object c2, Object c3, Object c4, Object c5, Object c6)
     Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child.
Parameters:
  c5 - The fifth child.
Parameters:
  c6 - The sixth child.
public static  GNodecreate(String name, Object c1, Object c2, Object c3, Object c4, Object c5, Object c6, Object c7)
     Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child.
Parameters:
  c5 - The fifth child.
Parameters:
  c6 - The sixth child.
Parameters:
  c7 - The seventh child.
public static  GNodecreate(String name, Object c1, Object c2, Object c3, Object c4, Object c5, Object c6, Object c7, Object c8)
     Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child.
Parameters:
  c5 - The fifth child.
Parameters:
  c6 - The sixth child.
Parameters:
  c7 - The seventh child.
Parameters:
  c8 - The eigth child.
public static  GNodecreate(GNode node)
     Create a new generic node that is a (shallow) copy of the specified node.
Parameters:
  node - The node to copy.
public static  GNodecreateFromPair(String name, Pair p)
     Create a new generic node with the list's nodes as its children. If possible, this method returns a fixed size node.
Parameters:
  name - The name.
Parameters:
  p - The list of children.
public static  GNodecreateFromPair(String name, Object base, Pair rest)
     Create a new generic node with the specified children.
public static  GNodeensureVariable(GNode node)
     Ensure that the specified node supports a variable number of children.
Parameters:
  node - The generic node.
public  booleanequals(Object o)
     Determine whether this generic node equals the specified object. This node equals the object, if both are generic nodes with the same names and the same number of equal children.
Parameters:
  o - The object to compare to.
final public  StringgetName()
    
final public  booleanhasName(String name)
    
final public  booleanhasTraversal()
    
public  inthashCode()
     Get this generic node's hash code.
final public  booleanisGeneric()
     Determine whether this node is generic.
final public static  booleantest(Object o)
     Test whether the specified object is a generic node, possibly wrapped in annotations.
Parameters:
  o - The object.

Field Detail
MAX_FIXED
final public static int MAX_FIXED(Code)
The maximum number of children for generic nodes that are optimized to hold a fixed number of children.


name
final String name(Code)
The name.



Constructor Detail
GNode
GNode(String name)(Code)
Create a new generic node with the specified name.



Method Detail
cast
final public static GNode cast(Object o)(Code)
Cast the specified object to a generic node. If the specified object has any Annotation annotations , they are Node.strip stripped before returning the object as a generic node.
See Also:   GNode.test(Object)
Parameters:
  o - The object. The object as a stripped generic node.


create
public static GNode create(String name)(Code)
Create a new generic node with the specified name. The new node supports a variable number of children and has a default capacity.
Parameters:
  name - The name. The corresponding generic node.


create
public static GNode create(String name, int capacity)(Code)
Create a new generic node with the specified name. The new node supports a variable number of children and has the specified capacity.
Parameters:
  name - The name.
Parameters:
  capacity - The initial capacity. The corresponding generic node.
throws:
  IllegalArgumentException - Signals that the capacity is negative.


create
public static GNode create(String name, boolean variable)(Code)
Create a new generic node with the specified name. Invoking this method with a true variable flag is equivalent to invoking GNode.create(String) . Invoking this method with a false variabel flag results in a generic node with no children.
Parameters:
  name - The name.
Parameters:
  variable - Flag for whether the new node supports a variablenumber of children. The corresponding generic node.


create
public static GNode create(String name, Object child)(Code)
Create a new generic node with the specified name and child. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  child - The child. The corresponding generic node.


create
public static GNode create(String name, Object c1, Object c2)(Code)
Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child. The corresponding generic node.


create
public static GNode create(String name, Object c1, Object c2, Object c3)(Code)
Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child. The corresponding generic node.


create
public static GNode create(String name, Object c1, Object c2, Object c3, Object c4)(Code)
Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child. The corresponding generic node.


create
public static GNode create(String name, Object c1, Object c2, Object c3, Object c4, Object c5)(Code)
Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child.
Parameters:
  c5 - The fifth child. The corresponding generic node.


create
public static GNode create(String name, Object c1, Object c2, Object c3, Object c4, Object c5, Object c6)(Code)
Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child.
Parameters:
  c5 - The fifth child.
Parameters:
  c6 - The sixth child. The corresponding generic node.


create
public static GNode create(String name, Object c1, Object c2, Object c3, Object c4, Object c5, Object c6, Object c7)(Code)
Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child.
Parameters:
  c5 - The fifth child.
Parameters:
  c6 - The sixth child.
Parameters:
  c7 - The seventh child. The corresponding generic node.


create
public static GNode create(String name, Object c1, Object c2, Object c3, Object c4, Object c5, Object c6, Object c7, Object c8)(Code)
Create a new generic node with the specified name and children. The new node does not support a variable number of children.
Parameters:
  name - The name.
Parameters:
  c1 - The first child.
Parameters:
  c2 - The second child.
Parameters:
  c3 - The third child.
Parameters:
  c4 - The fourth child.
Parameters:
  c5 - The fifth child.
Parameters:
  c6 - The sixth child.
Parameters:
  c7 - The seventh child.
Parameters:
  c8 - The eigth child. The corresponding generic node.


create
public static GNode create(GNode node)(Code)
Create a new generic node that is a (shallow) copy of the specified node.
Parameters:
  node - The node to copy. The copy.


createFromPair
public static GNode createFromPair(String name, Pair p)(Code)
Create a new generic node with the list's nodes as its children. If possible, this method returns a fixed size node.
Parameters:
  name - The name.
Parameters:
  p - The list of children. The corresponding generic node.


createFromPair
public static GNode createFromPair(String name, Object base, Pair rest)(Code)
Create a new generic node with the specified children. If possible, this method returns a fixed size node.
Parameters:
  name - The name.
Parameters:
  base - The first child.
Parameters:
  rest - The rest of the children. The corresponding generic node.


ensureVariable
public static GNode ensureVariable(GNode node)(Code)
Ensure that the specified node supports a variable number of children.
Parameters:
  node - The generic node. A shallow copy of the specified node if it does notsupport a variable number of children; otherwise, the specifiednode.


equals
public boolean equals(Object o)(Code)
Determine whether this generic node equals the specified object. This node equals the object, if both are generic nodes with the same names and the same number of equal children.
Parameters:
  o - The object to compare to. true if this generic node equals the object.


getName
final public String getName()(Code)


hasName
final public boolean hasName(String name)(Code)


hasTraversal
final public boolean hasTraversal()(Code)


hashCode
public int hashCode()(Code)
Get this generic node's hash code. This node's hash code.


isGeneric
final public boolean isGeneric()(Code)
Determine whether this node is generic. true.


test
final public static boolean test(Object o)(Code)
Test whether the specified object is a generic node, possibly wrapped in annotations.
Parameters:
  o - The object. true if the object is a possibly annotatedgeneric node.


Fields inherited from xtc.tree.Node
public Location location(Code)(Java Doc)

Methods inherited from xtc.tree.Node
public Object accept(Visitor v)(Code)(Java Doc)
public Object getProperty(String name)(Code)(Java Doc)
public boolean hasProperty(String name)(Code)(Java Doc)
public Iterator properties()(Code)(Java Doc)
public Object removeProperty(String name)(Code)(Java Doc)
public void setLocation(String file, int line, int column)(Code)(Java Doc)
public Object setProperty(String name, Object value)(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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