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/* FJBG -- Fast Java Bytecode Generator
* Copyright 2002-2011 LAMP/EPFL
* @author Michel Schinz
*/
package ch.epfl.lamp.fjbg;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
/**
* EclosingMethod attribute
* A class must have an EnclosingMethod attribute if and only if it is a
* local class or an anonymous class. A class may have no more than one
* EnclosingMethod attribute. See section 4.8.6 of the JVM specification.
*
* @author Michel Schinz
* @version 1.0
*/
public class JEnclosingMethodAttribute extends JAttribute {
/** Constant pool of the current classfile. */
private JConstantPool pool;
protected final int classIdx;
protected final int nameAndTypeIdx;
public JEnclosingMethodAttribute(FJBGContext context,
JClass clazz,
String className,
String methodName,
JType methodType) {
super(context, clazz);
this.pool = clazz.pool;
this.classIdx = pool.addClass(className);
this.nameAndTypeIdx = pool.addNameAndType(methodName, methodType.getSignature());
}
public JEnclosingMethodAttribute(FJBGContext context,
JClass clazz,
Object owner,
String name,
int size,
DataInputStream stream)
throws IOException {
super(context, clazz, name);
this.pool = clazz.pool;
this.classIdx = stream.readShort();
this.nameAndTypeIdx = stream.readShort();
assert name.equals(getName());
}
public String getName() { return "EnclosingMethod"; }
// Follows javap output format for EnclosingMethod attribute.
/*@Override*/ public String toString() {
StringBuffer buf = new StringBuffer(" EnclosingMethod:");
buf.append("\n #");
buf.append(classIdx);
if (nameAndTypeIdx != 0) {
buf.append(" of #");
buf.append(nameAndTypeIdx);
}
buf.append(";\t// ");
buf.append(pool.lookupEntry(classIdx));
buf.append("\n");
return buf.toString();
}
protected int getSize() {
return 4; // 2 * Short.SIZE
}
protected void writeContentsTo(DataOutputStream stream) throws IOException {
stream.writeShort(classIdx);
stream.writeShort(nameAndTypeIdx);
}
}
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