gate.jape
Class BasicPatternElement

java.lang.Object
  |
  +--gate.jape.PatternElement
        |
        +--gate.jape.BasicPatternElement
All Implemented Interfaces:
Cloneable, JapeConstants, Matcher, Serializable

public class BasicPatternElement
extends PatternElement
implements JapeConstants, Serializable

A pattern element within curly braces. Has a set of Constraint, which all must be satisfied at whatever position the element is being matched at.

See Also:
Serialized Form

Field Summary
private  com.objectspace.jgl.Array constraints1
          A set of Constraint.
private  Constraint[] constraints2
          A set of Constraint.
private  com.objectspace.jgl.HashMap constraintsMap
          A map of constraint annot type to constraint.
private static boolean DEBUG
          Debug flag
private  int lastFailurePoint
          Cache of the last position we failed at (-1 when none).
private  AnnotationSet matchedAnnots
          The set of annotations we have matched.
 
Fields inherited from class gate.jape.PatternElement
matchHistory
 
Fields inherited from interface gate.jape.JapeConstants
APPELT_STYLE, BRILL_STYLE, DEFAULT_PRIORITY, FIRST_STYLE, INDENT_PADDING, KLEENE_PLUS, KLEENE_QUERY, KLEENE_STAR, MULTI_SPAN_BINDING, NO_BINDING, NO_KLEENE_OP, SINGLE_SPAN_BINDING
 
Constructor Summary
BasicPatternElement()
          Construction.
 
Method Summary
 void addConstraint(Constraint newConstraint)
          Add a constraint.
 Object clone()
          Need cloning for processing of macro references.
 void finish()
          Finish: replace dynamic data structures with Java arrays; called after parsing.
 Constraint[] getConstraints()
           
 AnnotationSet getMatchedAnnots()
          Access to the annotations that have been matched.
 boolean matches(Document doc, int position, MutableInteger newPosition)
          Does this element match the document at this position?
 void reset()
          Reset: clear last failure point and matched annotations list.
 void rollback(int arity)
          Multilevel rollback of the annotation cache.
 String shortDesc()
          Returns a short description.
 String toString()
          Create a string representation of the object.
 String toString(String pad)
          Create a string representation of the object.
 
Methods inherited from class java.lang.Object
, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, wait, wait, wait
 

Field Detail

DEBUG

private static final boolean DEBUG
Debug flag

constraints1

private com.objectspace.jgl.Array constraints1
A set of Constraint. Used during parsing.

constraints2

private Constraint[] constraints2
A set of Constraint. Used during matching.

constraintsMap

private com.objectspace.jgl.HashMap constraintsMap
A map of constraint annot type to constraint. Used during parsing.

lastFailurePoint

private int lastFailurePoint
Cache of the last position we failed at (-1 when none).

matchedAnnots

private AnnotationSet matchedAnnots
The set of annotations we have matched.
Constructor Detail

BasicPatternElement

public BasicPatternElement()
Construction.
Method Detail

getMatchedAnnots

public AnnotationSet getMatchedAnnots()
Access to the annotations that have been matched.
Overrides:
getMatchedAnnots in class PatternElement

clone

public Object clone()
Need cloning for processing of macro references. See comments on PatternElement.clone()
Overrides:
clone in class PatternElement

addConstraint

public void addConstraint(Constraint newConstraint)
Add a constraint. Ensures that only one constraint of any given annotation type exists.

finish

public void finish()
Finish: replace dynamic data structures with Java arrays; called after parsing.

reset

public void reset()
Reset: clear last failure point and matched annotations list.
Overrides:
reset in class PatternElement

rollback

public void rollback(int arity)
Multilevel rollback of the annotation cache.
Overrides:
rollback in class PatternElement

matches

public boolean matches(Document doc,
                       int position,
                       MutableInteger newPosition)
Does this element match the document at this position?

toString

public String toString()
Create a string representation of the object.
Overrides:
toString in class Object

toString

public String toString(String pad)
Create a string representation of the object.
Overrides:
toString in class PatternElement

shortDesc

public String shortDesc()
Returns a short description.

getConstraints

public Constraint[] getConstraints()