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<FONT color="green">001</FONT> package org.maltparser.parser.transition;<a name="line.1"></a>
<FONT color="green">002</FONT> <a name="line.2"></a>
<FONT color="green">003</FONT> <a name="line.3"></a>
<FONT color="green">004</FONT> /**<a name="line.4"></a>
<FONT color="green">005</FONT> * Transition contains one individual transition. For example, Nivre arc-eager algorithms have the unlabeled <a name="line.5"></a>
<FONT color="green">006</FONT> * transition <code>SH</code>, <code>RE</code> and the labeled transition<code>RA</code>, <code>LA</code>. These<a name="line.6"></a>
<FONT color="green">007</FONT> * transition will be four individual transition.<a name="line.7"></a>
<FONT color="green">008</FONT> * <a name="line.8"></a>
<FONT color="green">009</FONT> * @author Joakim Nivre<a name="line.9"></a>
<FONT color="green">010</FONT> * @author Johan Hall<a name="line.10"></a>
<FONT color="green">011</FONT> * @since 1.0<a name="line.11"></a>
<FONT color="green">012</FONT> */<a name="line.12"></a>
<FONT color="green">013</FONT> public class Transition implements Comparable<Transition> {<a name="line.13"></a>
<FONT color="green">014</FONT> /**<a name="line.14"></a>
<FONT color="green">015</FONT> * Transition code<a name="line.15"></a>
<FONT color="green">016</FONT> */<a name="line.16"></a>
<FONT color="green">017</FONT> private int code;<a name="line.17"></a>
<FONT color="green">018</FONT> /**<a name="line.18"></a>
<FONT color="green">019</FONT> * Transition symbol<a name="line.19"></a>
<FONT color="green">020</FONT> */<a name="line.20"></a>
<FONT color="green">021</FONT> private String symbol;<a name="line.21"></a>
<FONT color="green">022</FONT> /**<a name="line.22"></a>
<FONT color="green">023</FONT> * <code>true</code> if the transition is labeled, otherwise <code>false</code><a name="line.23"></a>
<FONT color="green">024</FONT> */<a name="line.24"></a>
<FONT color="green">025</FONT> private boolean labeled;<a name="line.25"></a>
<FONT color="green">026</FONT> private int cachedHash;<a name="line.26"></a>
<FONT color="green">027</FONT> /**<a name="line.27"></a>
<FONT color="green">028</FONT> * Creates a transition <a name="line.28"></a>
<FONT color="green">029</FONT> * <a name="line.29"></a>
<FONT color="green">030</FONT> * @param code Transition code<a name="line.30"></a>
<FONT color="green">031</FONT> * @param symbol Transition name<a name="line.31"></a>
<FONT color="green">032</FONT> * @param labeled <code>true</code> if the transition is labeled, otherwise <code>false</code><a name="line.32"></a>
<FONT color="green">033</FONT> */<a name="line.33"></a>
<FONT color="green">034</FONT> public Transition(int code, String symbol, boolean labeled) {<a name="line.34"></a>
<FONT color="green">035</FONT> this.code = code;<a name="line.35"></a>
<FONT color="green">036</FONT> this.symbol = symbol;<a name="line.36"></a>
<FONT color="green">037</FONT> this.labeled = labeled;<a name="line.37"></a>
<FONT color="green">038</FONT> }<a name="line.38"></a>
<FONT color="green">039</FONT> <a name="line.39"></a>
<FONT color="green">040</FONT> /**<a name="line.40"></a>
<FONT color="green">041</FONT> * Returns the transition code<a name="line.41"></a>
<FONT color="green">042</FONT> * <a name="line.42"></a>
<FONT color="green">043</FONT> * @return the transition code<a name="line.43"></a>
<FONT color="green">044</FONT> */<a name="line.44"></a>
<FONT color="green">045</FONT> public int getCode() {<a name="line.45"></a>
<FONT color="green">046</FONT> return code;<a name="line.46"></a>
<FONT color="green">047</FONT> }<a name="line.47"></a>
<FONT color="green">048</FONT> <a name="line.48"></a>
<FONT color="green">049</FONT> /**<a name="line.49"></a>
<FONT color="green">050</FONT> * Returns the transition symbol<a name="line.50"></a>
<FONT color="green">051</FONT> * <a name="line.51"></a>
<FONT color="green">052</FONT> * @return the transition symbol<a name="line.52"></a>
<FONT color="green">053</FONT> */<a name="line.53"></a>
<FONT color="green">054</FONT> public String getSymbol() {<a name="line.54"></a>
<FONT color="green">055</FONT> return symbol;<a name="line.55"></a>
<FONT color="green">056</FONT> }<a name="line.56"></a>
<FONT color="green">057</FONT> <a name="line.57"></a>
<FONT color="green">058</FONT> /**<a name="line.58"></a>
<FONT color="green">059</FONT> * Returns true if the transition is labeled, otherwise false<a name="line.59"></a>
<FONT color="green">060</FONT> * <a name="line.60"></a>
<FONT color="green">061</FONT> * @return <code>true</code> if the transition is labeled, otherwise <code>false</code><a name="line.61"></a>
<FONT color="green">062</FONT> */<a name="line.62"></a>
<FONT color="green">063</FONT> public boolean isLabeled() {<a name="line.63"></a>
<FONT color="green">064</FONT> return labeled;<a name="line.64"></a>
<FONT color="green">065</FONT> }<a name="line.65"></a>
<FONT color="green">066</FONT> <a name="line.66"></a>
<FONT color="green">067</FONT> <a name="line.67"></a>
<FONT color="green">068</FONT> public int compareTo(Transition that) {<a name="line.68"></a>
<FONT color="green">069</FONT> final int BEFORE = -1;<a name="line.69"></a>
<FONT color="green">070</FONT> final int EQUAL = 0;<a name="line.70"></a>
<FONT color="green">071</FONT> final int AFTER = 1;<a name="line.71"></a>
<FONT color="green">072</FONT> // if ( this == that ) return EQUAL;<a name="line.72"></a>
<FONT color="green">073</FONT> if (this.code < that.code) return BEFORE;<a name="line.73"></a>
<FONT color="green">074</FONT> if (this.code > that.code) return AFTER;<a name="line.74"></a>
<FONT color="green">075</FONT> return EQUAL;<a name="line.75"></a>
<FONT color="green">076</FONT> }<a name="line.76"></a>
<FONT color="green">077</FONT> <a name="line.77"></a>
<FONT color="green">078</FONT> public boolean equals(Object obj) {<a name="line.78"></a>
<FONT color="green">079</FONT> if (this == obj)<a name="line.79"></a>
<FONT color="green">080</FONT> return true;<a name="line.80"></a>
<FONT color="green">081</FONT> if (obj == null)<a name="line.81"></a>
<FONT color="green">082</FONT> return false;<a name="line.82"></a>
<FONT color="green">083</FONT> if (getClass() != obj.getClass())<a name="line.83"></a>
<FONT color="green">084</FONT> return false;<a name="line.84"></a>
<FONT color="green">085</FONT> Transition t = (Transition)obj;<a name="line.85"></a>
<FONT color="green">086</FONT> return (code == t.code && symbol.equals(t.symbol) && labeled == t.isLabeled());<a name="line.86"></a>
<FONT color="green">087</FONT> }<a name="line.87"></a>
<FONT color="green">088</FONT> <a name="line.88"></a>
<FONT color="green">089</FONT> public int hashCode() {<a name="line.89"></a>
<FONT color="green">090</FONT> if (cachedHash == 0) {<a name="line.90"></a>
<FONT color="green">091</FONT> int hash = 31*7 + code;<a name="line.91"></a>
<FONT color="green">092</FONT> hash = 31*hash + (null == symbol ? 0 : symbol.hashCode());<a name="line.92"></a>
<FONT color="green">093</FONT> hash = 31*hash + (labeled ? 1 : 0);<a name="line.93"></a>
<FONT color="green">094</FONT> cachedHash = hash;<a name="line.94"></a>
<FONT color="green">095</FONT> }<a name="line.95"></a>
<FONT color="green">096</FONT> return cachedHash;<a name="line.96"></a>
<FONT color="green">097</FONT> }<a name="line.97"></a>
<FONT color="green">098</FONT> <a name="line.98"></a>
<FONT color="green">099</FONT> <a name="line.99"></a>
<FONT color="green">100</FONT> /* (non-Javadoc)<a name="line.100"></a>
<FONT color="green">101</FONT> * @see java.lang.Object#toString()<a name="line.101"></a>
<FONT color="green">102</FONT> */<a name="line.102"></a>
<FONT color="green">103</FONT> public String toString() {<a name="line.103"></a>
<FONT color="green">104</FONT> return symbol + " [" + code +"] " + labeled;<a name="line.104"></a>
<FONT color="green">105</FONT> }<a name="line.105"></a>
<FONT color="green">106</FONT> }<a name="line.106"></a>
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