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<pre><span class="sourceLineNo">001</span>package serp.bytecode;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import java.io.*;<a name="line.3"></a>
<span class="sourceLineNo">004</span><a name="line.4"></a>
<span class="sourceLineNo">005</span>import serp.bytecode.lowlevel.*;<a name="line.5"></a>
<span class="sourceLineNo">006</span>import serp.bytecode.visitor.*;<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>/**<a name="line.8"></a>
<span class="sourceLineNo">009</span> * Attribute naming the source file for this class.<a name="line.9"></a>
<span class="sourceLineNo">010</span> *<a name="line.10"></a>
<span class="sourceLineNo">011</span> * @author Abe White<a name="line.11"></a>
<span class="sourceLineNo">012</span> */<a name="line.12"></a>
<span class="sourceLineNo">013</span>public class SourceFile extends Attribute {<a name="line.13"></a>
<span class="sourceLineNo">014</span> int _sourceFileIndex = 0;<a name="line.14"></a>
<span class="sourceLineNo">015</span><a name="line.15"></a>
<span class="sourceLineNo">016</span> SourceFile(int nameIndex, Attributes owner) {<a name="line.16"></a>
<span class="sourceLineNo">017</span> super(nameIndex, owner);<a name="line.17"></a>
<span class="sourceLineNo">018</span> }<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span> int getLength() {<a name="line.20"></a>
<span class="sourceLineNo">021</span> return 2;<a name="line.21"></a>
<span class="sourceLineNo">022</span> }<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span> /**<a name="line.24"></a>
<span class="sourceLineNo">025</span> * Return the index into the class {@link ConstantPool} of the<a name="line.25"></a>
<span class="sourceLineNo">026</span> * {@link UTF8Entry} naming the source file for this class, or 0 if not set.<a name="line.26"></a>
<span class="sourceLineNo">027</span> */<a name="line.27"></a>
<span class="sourceLineNo">028</span> public int getFileIndex() {<a name="line.28"></a>
<span class="sourceLineNo">029</span> return _sourceFileIndex;<a name="line.29"></a>
<span class="sourceLineNo">030</span> }<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span> /**<a name="line.32"></a>
<span class="sourceLineNo">033</span> * Set the index into the class {@link ConstantPool} of the<a name="line.33"></a>
<span class="sourceLineNo">034</span> * {@link UTF8Entry} naming the source file for this class.<a name="line.34"></a>
<span class="sourceLineNo">035</span> */<a name="line.35"></a>
<span class="sourceLineNo">036</span> public void setFileIndex(int sourceFileIndex) {<a name="line.36"></a>
<span class="sourceLineNo">037</span> if (sourceFileIndex < 0)<a name="line.37"></a>
<span class="sourceLineNo">038</span> sourceFileIndex = 0;<a name="line.38"></a>
<span class="sourceLineNo">039</span> _sourceFileIndex = sourceFileIndex;<a name="line.39"></a>
<span class="sourceLineNo">040</span> }<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span> /**<a name="line.42"></a>
<span class="sourceLineNo">043</span> * Return the name of the source file, or null if not set.<a name="line.43"></a>
<span class="sourceLineNo">044</span> */<a name="line.44"></a>
<span class="sourceLineNo">045</span> public String getFileName() {<a name="line.45"></a>
<span class="sourceLineNo">046</span> if (_sourceFileIndex == 0)<a name="line.46"></a>
<span class="sourceLineNo">047</span> return null;<a name="line.47"></a>
<span class="sourceLineNo">048</span> return ((UTF8Entry) getPool().getEntry(_sourceFileIndex)).getValue();<a name="line.48"></a>
<span class="sourceLineNo">049</span> }<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span> /**<a name="line.51"></a>
<span class="sourceLineNo">052</span> * Return the file object for the source file, or null if not set.<a name="line.52"></a>
<span class="sourceLineNo">053</span> *<a name="line.53"></a>
<span class="sourceLineNo">054</span> * @param dir the directory of the file, or null<a name="line.54"></a>
<span class="sourceLineNo">055</span> */<a name="line.55"></a>
<span class="sourceLineNo">056</span> public File getFile(File dir) {<a name="line.56"></a>
<span class="sourceLineNo">057</span> String name = getFileName();<a name="line.57"></a>
<span class="sourceLineNo">058</span> if (name == null)<a name="line.58"></a>
<span class="sourceLineNo">059</span> return null;<a name="line.59"></a>
<span class="sourceLineNo">060</span> return new File(dir, name);<a name="line.60"></a>
<span class="sourceLineNo">061</span> }<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span> /**<a name="line.63"></a>
<span class="sourceLineNo">064</span> * Set the name of the source file. The name should be the file name<a name="line.64"></a>
<span class="sourceLineNo">065</span> * only; it should not include the path to the file.<a name="line.65"></a>
<span class="sourceLineNo">066</span> */<a name="line.66"></a>
<span class="sourceLineNo">067</span> public void setFile(String name) {<a name="line.67"></a>
<span class="sourceLineNo">068</span> if (name == null)<a name="line.68"></a>
<span class="sourceLineNo">069</span> setFileIndex(0);<a name="line.69"></a>
<span class="sourceLineNo">070</span> else<a name="line.70"></a>
<span class="sourceLineNo">071</span> setFileIndex(getPool().findUTF8Entry(name, true));<a name="line.71"></a>
<span class="sourceLineNo">072</span> }<a name="line.72"></a>
<span class="sourceLineNo">073</span><a name="line.73"></a>
<span class="sourceLineNo">074</span> /**<a name="line.74"></a>
<span class="sourceLineNo">075</span> * Set the source file. Note that only the file name is recorded;<a name="line.75"></a>
<span class="sourceLineNo">076</span> * the path to the file is discarded.<a name="line.76"></a>
<span class="sourceLineNo">077</span> */<a name="line.77"></a>
<span class="sourceLineNo">078</span> public void setFile(File file) {<a name="line.78"></a>
<span class="sourceLineNo">079</span> if (file == null)<a name="line.79"></a>
<span class="sourceLineNo">080</span> setFile((String) null);<a name="line.80"></a>
<span class="sourceLineNo">081</span> else<a name="line.81"></a>
<span class="sourceLineNo">082</span> setFile(file.getName());<a name="line.82"></a>
<span class="sourceLineNo">083</span> }<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span> /**<a name="line.85"></a>
<span class="sourceLineNo">086</span> * Set the file name from the current class name plus the .java extension.<a name="line.86"></a>
<span class="sourceLineNo">087</span> */<a name="line.87"></a>
<span class="sourceLineNo">088</span> public void setFromClassName() {<a name="line.88"></a>
<span class="sourceLineNo">089</span> setFile(((BCClass) getOwner()).getClassName() + ".java");<a name="line.89"></a>
<span class="sourceLineNo">090</span> }<a name="line.90"></a>
<span class="sourceLineNo">091</span><a name="line.91"></a>
<span class="sourceLineNo">092</span> public void acceptVisit(BCVisitor visit) {<a name="line.92"></a>
<span class="sourceLineNo">093</span> visit.enterSourceFile(this);<a name="line.93"></a>
<span class="sourceLineNo">094</span> visit.exitSourceFile(this);<a name="line.94"></a>
<span class="sourceLineNo">095</span> }<a name="line.95"></a>
<span class="sourceLineNo">096</span><a name="line.96"></a>
<span class="sourceLineNo">097</span> void read(Attribute other) {<a name="line.97"></a>
<span class="sourceLineNo">098</span> setFile(((SourceFile) other).getFileName());<a name="line.98"></a>
<span class="sourceLineNo">099</span> }<a name="line.99"></a>
<span class="sourceLineNo">100</span><a name="line.100"></a>
<span class="sourceLineNo">101</span> void read(DataInput in, int length) throws IOException {<a name="line.101"></a>
<span class="sourceLineNo">102</span> setFileIndex(in.readUnsignedShort());<a name="line.102"></a>
<span class="sourceLineNo">103</span> }<a name="line.103"></a>
<span class="sourceLineNo">104</span><a name="line.104"></a>
<span class="sourceLineNo">105</span> void write(DataOutput out, int length) throws IOException {<a name="line.105"></a>
<span class="sourceLineNo">106</span> out.writeShort(getFileIndex());<a name="line.106"></a>
<span class="sourceLineNo">107</span> }<a name="line.107"></a>
<span class="sourceLineNo">108</span>}<a name="line.108"></a>
</pre>
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