src/main/java/org/snt/autorex/autograph/Transition.java
/**
* autorex - fsm state eliminator
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Julian Thome <julian.thome.de@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
**/
package org.snt.autorex.autograph;
public class Transition implements Cloneable {
public enum Kind {
EPSILON,
MATCH
}
/**
* Properties used when doing the DFS
* edge classification
*/
public enum Property {
NORMAL,
BACK,
FWD,
CROSS,
TREE;
}
private Kind kind = Kind.MATCH;
private Property prop = Property.NORMAL;
public void setKind(Kind kind) {
this.kind = kind;
}
public Property getProp() {
return prop;
}
public void setProp(Property prop) {
this.prop = prop;
}
private StringBuilder m = new StringBuilder();
private State src = null;
private State dst = null;
public Transition(State src, State dst, Kind k, StringBuilder m) {
this(src,dst,k);
this.m = m;
}
public Transition(State src, State dst, Kind k, String s) {
this(src,dst,k);
this.m.append(s);
}
public Transition(State src, State dst, Kind k) {
this.src = src;
this.dst = dst;
this.kind = k;
if(k == Kind.EPSILON)
this.m = new StringBuilder(".{0}");
}
public Kind getKind() {
return kind;
}
public State getSource() {
return this.src;
}
public State getTarget() {
return this.dst;
}
public void setSource(State src) {
this.src = src;
}
public void setTarget(State dst) {
this.dst = dst;
}
public boolean contains(State s) {
return this.getSource().equals(s) || this.getTarget().equals(s);
}
@Override
public Transition clone() {
return new Transition(src,dst,kind,m);
}
public StringBuilder getLabel() {
return m;
}
@Override
public String toString() {
return src.getDotLabel() + " -(" + m.toString() + ")>" + dst.getDotLabel();
}
public void setLabel(StringBuilder lbl) {
this.m = lbl;
}
@Override
public int hashCode() {
return String.valueOf(src.getDotLabel() + dst.getDotLabel()).hashCode();
}
@Override
public boolean equals(Object o) {
if(!(o instanceof Transition))
return false;
Transition t = (Transition)o;
return this.src.equals(t.src) && this.dst.equals(t.dst);
}
}