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package ch.epfl.lamp.fjbg;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
/**
* Sourcefile attribute, which can be attached to class files to
* associate them with their source file.
*
* @version 1.0
* @author Michel Schinz
*/
public class JSourceFileAttribute extends JAttribute {
protected final String sourceFileName;
protected final int sourceFileIndex;
public JSourceFileAttribute(FJBGContext context,
JClass clazz,
String sourceFileName) {
super(context, clazz);
this.sourceFileName = sourceFileName;
this.sourceFileIndex = clazz.getConstantPool().addUtf8(sourceFileName);
}
public JSourceFileAttribute(FJBGContext context,
JClass clazz,
Object owner,
String name,
int size,
DataInputStream stream)
throws IOException {
super(context, clazz);
stream.readInt(); // ignore size
this.sourceFileIndex = stream.readShort();
this.sourceFileName = clazz.getConstantPool().lookupUtf8(sourceFileIndex);
assert name.equals(getName());
}
public String getName() { return "SourceFile"; }
protected int getSize() {
return 2;
}
protected void writeContentsTo(DataOutputStream stream) throws IOException {
stream.writeShort(sourceFileIndex);
}
}
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