public class ClassGen implements CGConst {
private final Type.Object thisType;
private final Type.Object superType;
+ private final Type.Object[] interfaces;
final int flags;
private String sourceFile;
- private final Vector interfaces = new Vector();
private final Vector fields = new Vector();
private final Vector methods = new Vector();
public ClassGen(String name, String superName, int flags) {
this(new Type.Object(name),new Type.Object(superName),flags);
}
+
+ /** @see #ClassGen(Type.Object,Type.Object,int,Type.Object[]) */
+ public ClassGen(Type.Object thisType,Type.Object superType, int flags) {
+ this(thisType,superType,flags,null);
+ }
/** Creates a new ClassGen object
@param thisType The type of the class to generate
- @param superType The superclas of the generated class (commonly Type.OBJECT)
+ @param superType The superclass of the generated class (commonly Type.OBJECT)
@param flags The access flags for this class (ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_INTERFACE, and ACC_ABSTRACT)
*/
- public ClassGen(Type.Object thisType,Type.Object superType, int flags) {
+ public ClassGen(Type.Object thisType,Type.Object superType, int flags, Type.Object[] interfaces) {
if((flags & ~(ACC_PUBLIC|ACC_FINAL|ACC_SUPER|ACC_INTERFACE|ACC_ABSTRACT)) != 0)
throw new IllegalArgumentException("invalid flags");
this.thisType = thisType;
this.superType = superType;
+ this.interfaces = interfaces;
this.flags = flags;
cp = new CPGen();
}
f = new File(f,a[i] + ".class");
}
- dump(new FileOutputStream(f));
+ OutputStream os = new FileOutputStream(f);
+ dump(os);
+ os.close();
}
/** Writes the classfile data to the outputstream specified
}
private void _dump(DataOutput o) throws IOException {
+ cp.optimize();
+ cp.stable();
+
cp.add(thisType);
cp.add(superType);
- for(int i=0;i<interfaces.size();i++) cp.add((Type.Object)interfaces.elementAt(i));
+ if(interfaces != null) for(int i=0;i<interfaces.length;i++) cp.add(interfaces[i]);
if(sourceFile != null && !attributes.contains("SourceFile")) attributes.add("SourceFile",cp.addUtf8(sourceFile));
-
- cp.stable();
-
+
for(int i=0;i<methods.size();i++) ((MethodGen)methods.elementAt(i)).finish();
for(int i=0;i<fields.size();i++) ((FieldGen)fields.elementAt(i)).finish();
o.writeShort(3); // minor_version
o.writeShort(45); // major_version
- o.writeShort(cp.size()); // constant_pool_count
cp.dump(o); // constant_pool
o.writeShort(flags);
o.writeShort(cp.getIndex(thisType)); // this_class
o.writeShort(cp.getIndex(superType)); // super_class
- o.writeShort(interfaces.size()); // interfaces_count
- for(int i=0;i<interfaces.size();i++) o.writeShort(cp.getIndex(interfaces.elementAt(i))); // interfaces
+ o.writeShort(interfaces==null ? 0 : interfaces.length); // interfaces_count
+ if(interfaces != null) for(int i=0;i<interfaces.length;i++) o.writeShort(cp.getIndex(interfaces[i])); // interfaces
o.writeShort(fields.size()); // fields_count
for(int i=0;i<fields.size();i++) ((FieldGen)fields.elementAt(i)).dump(o); // fields
attributes.dump(o); // attributes
}
+ public ClassGen read(File f) throws ClassReadExn, IOException {
+ InputStream is = new FileInputStream(f);
+ ClassGen ret = read(is);
+ is.close();
+ return ret;
+ }
+
+ public ClassGen read(InputStream is) throws ClassReadExn, IOException {
+ return new ClassGen(new DataInputStream(new BufferedInputStream(is)));
+ }
+
+ ClassGen(DataInput i) throws ClassReadExn, IOException {
+ if(i.readInt() != 0xcadebabe) throw new ClassReadExn("invalid magic");
+ short minor = (short)i.readInt();
+ if(minor != 3) throw new ClassReadExn("invalid minor version: " + minor);
+ if(i.readInt() != 45) throw new ClassReadExn("invalid major version");
+ cp = new CPGen(i);
+ flags = (short)i.readShort();
+ thisType = cp.getType(i.readShort());
+ superType = cp.getType(i.readShort());
+ interfaces = new Type.Object[i.readShort()];
+ for(int j=0; j<interfaces.length; j++) interfaces[j] = cp.getType(i.readShort());
+ int numFields = i.readShort();
+ for(int j=0; j<numFields; j++) fields.add(new FieldGen(i));
+ int numMethods = i.readShort();
+ for(int j=0; j<numMethods; j++) methods.add(new MethodGen(i));
+ attributes = new AttrGen(i);
+ }
+
/** Thrown when class generation fails for a reason not under the control of the user
(IllegalStateExceptions are thrown in those cases */
public static class Exn extends RuntimeException {
public Exn(String s) { super(s); }
}
+ public static class ClassReadExn extends IOException {
+ public ClassReadExn(String s) { super(s); }
+ }
+
/** A class representing a field or method reference. This is used as an argument to the INVOKE*, GET*, and PUT* bytecodes
@see MethodRef
@see FieldRef
private final CPGen cp;
private final Hashtable ht = new Hashtable();
+ public AttrGen(DataInput in) {
+ throw new Error("Brian is superlame");
+ }
public AttrGen(CPGen cp) {
this.cp = cp;
}
o.write(buf);
} else if(val instanceof CPGen.Ent) {
o.writeInt(2);
- o.writeShort(((CPGen.Ent)val).getIndex());
+ o.writeShort(cp.getIndex((CPGen.Ent)val));
} else {
throw new Error("should never happen");
}
projects / org.ibex.classgen.git / blobdiff