private final Type.Object thisType;
private final Type.Object superType;
private final Type.Object[] interfaces;
+ private short minor;
+ private short major;
final int flags;
private String sourceFile;
final CPGen cp;
private final AttrGen attributes;
-
- /** @see #ClassGen(Type.Object,Type.Object,int) */
+
+ public static String flagsToString(int flags) {
+ String ret = "";
+ if ((flags & ACC_PUBLIC) != 0) ret += "public ";
+ if ((flags & ACC_PRIVATE) != 0) ret += "private ";
+ if ((flags & ACC_PROTECTED) != 0) ret += "protected ";
+ if ((flags & ACC_STATIC) != 0) ret += "static ";
+ if ((flags & ACC_FINAL) != 0) ret += "final ";
+ if ((flags & ACC_ABSTRACT) != 0) ret += "abstract ";
+ if ((flags & ACC_SYNCHRONIZED) != 0) ret += "synchronized ";
+ if ((flags & ACC_NATIVE) != 0) ret += "native ";
+ if ((flags & ACC_STRICT) != 0) ret += "strictfp ";
+ if ((flags & ACC_VOLATILE) != 0) ret += "volatile ";
+ if ((flags & ACC_TRANSIENT) != 0) ret += "transient ";
+ return ret;
+ }
+
+ public String toString() { StringBuffer sb = new StringBuffer(); toString(sb); return sb.toString(); }
+ public void toString(StringBuffer sb) {
+ sb.append(flagsToString(flags));
+ sb.append((flags & ACC_INTERFACE) != 0 ? "interface " : "class ");
+ sb.append(thisType.humanReadable());
+ if (superType != null) sb.append(" extends " + superType.humanReadable());
+ if (interfaces != null && interfaces.length > 0) sb.append(" implements");
+ for(int i=0; i<interfaces.length; i++) sb.append((i==0?" ":", ")+interfaces[i].humanReadable());
+ sb.append(" {");
+ sb.append(" // [jcf v"+major+"."+minor+"]");
+ if (sourceFile != null) sb.append(" from " + sourceFile);
+ sb.append("\n");
+ for(int i=0; i<fields.size(); i++) {
+ sb.append(" ");
+ ((FieldGen)fields.elementAt(i)).toString(sb);
+ sb.append("\n");
+ }
+ for(int i=0; i<methods.size(); i++) {
+ sb.append(" ");
+ ((MethodGen)methods.elementAt(i)).toString(sb, thisType.getShortName());
+ sb.append("\n");
+ }
+ sb.append("}");
+ }
+
+ /** @see #ClassGen(Type.Object, Type.Object, int) */
public ClassGen(String name, String superName, int flags) {
this(Type.fromDescriptor(name).asObject(), Type.fromDescriptor(superName).asObject(), 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);
+ /** @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 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, Type.Object[] interfaces) {
+ 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;
+ this.minor = 3;
+ this.major = 45;
cp = new CPGen();
attributes = new AttrGen(cp);
@see CGConst
*/
public final MethodGen addMethod(String name, Type ret, Type[] args, int flags) {
- MethodGen mg = new MethodGen(this,name,ret,args,flags);
+ MethodGen mg = new MethodGen(this, name, ret, args, flags);
methods.addElement(mg);
return mg;
}
@see CGConst
*/
public final FieldGen addField(String name, Type type, int flags) {
- FieldGen fg = new FieldGen(this,name,type,flags);
+ FieldGen fg = new FieldGen(this, name, type, flags);
fields.addElement(fg);
return fg;
}
String[] a = thisType.components();
int i;
for(i=0;i<a.length-1;i++) {
- f = new File(f,a[i]);
+ f = new File(f, a[i]);
f.mkdir();
}
- f = new File(f,a[i] + ".class");
+ f = new File(f, a[i] + ".class");
}
OutputStream os = new FileOutputStream(f);
dump(os);
cp.add(thisType);
cp.add(superType);
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));
+ if(sourceFile != null && !attributes.contains("SourceFile")) attributes.add("SourceFile", cp.addUtf8(sourceFile));
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();
cp.seal();
o.writeInt(0xcafebabe); // magic
- o.writeShort(3); // minor_version
- o.writeShort(45); // major_version
+ o.writeShort(minor); // minor_version
+ o.writeShort(major); // major_version
cp.dump(o); // constant_pool
}
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");
+ int magic = i.readInt();
+ if (magic != 0xcafebabe) throw new ClassReadExn("invalid magic: " + Long.toString(0xffffffffL & magic, 16));
+ minor = i.readShort();
+ //if (minor != 3) throw new ClassReadExn("invalid minor version: " + minor);
+ major = i.readShort();
+ //if (major != 45 && major != 46) throw new ClassReadExn("invalid major version");
cp = new CPGen(i);
- flags = (short)i.readShort();
- thisType = cp.getType(i.readShort());
- superType = cp.getType(i.readShort());
+ flags = i.readShort();
+ thisType = (Type.Object)cp.getType(i.readShort());
+ superType = (Type.Object)cp.getType(i.readShort());
interfaces = new Type.Object[i.readShort()];
- for(int j=0; j<interfaces.length; j++) interfaces[j] = cp.getType(i.readShort());
+ for(int j=0; j<interfaces.length; j++) interfaces[j] = (Type.Object)cp.getType(i.readShort());
int numFields = i.readShort();
- for(int j=0; j<numFields; j++) fields.add(new FieldGen(i));
+ for(int j=0; j<numFields; j++) fields.add(new FieldGen(cp, i));
int numMethods = i.readShort();
- for(int j=0; j<numMethods; j++) methods.add(new MethodGen(i));
- attributes = new AttrGen(i);
+ for(int j=0; j<numMethods; j++) methods.add(new MethodGen(cp, i));
+ attributes = new AttrGen(cp, i);
+ sourceFile = (String)attributes.get("SourceFile");
}
/** Thrown when class generation fails for a reason not under the control of the user
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; }
+ public AttrGen(CPGen cp, DataInput in) throws IOException {
+ this(cp);
+ int size = in.readShort();
+ for(int i=0; i<size; i++) {
+ String name = null;
+ int idx = in.readShort();
+ CPGen.Ent e = cp.getByIndex(idx);
+ Object key = e.key();
+ if (key instanceof String) name = (String)key;
+ else name = ((Type)key).getDescriptor();
+
+ int length = in.readInt();
+ if (length==2) { // FIXME might be wrong assumption
+ ht.put(name, cp.getByIndex(in.readShort()));
+ } else {
+ byte[] buf = new byte[length];
+ in.readFully(buf);
+ ht.put(name, buf);
+ }
+ }
}
- public AttrGen(CPGen cp) {
- this.cp = cp;
+
+ public Object get(String s) {
+ Object ret = ht.get(s);
+ if (ret instanceof CPGen.Utf8Ent) return ((CPGen.Utf8Ent)ret).s;
+ return ret;
}
public void add(String s, Object data) {
cp.addUtf8(s);
- ht.put(s,data);
+ ht.put(s, data);
}
public boolean contains(String s) { return ht.get(s) != null; }
}
}
- /*public static void main(String[] args) throws Exception {
- Type.Object me = new Type.Object("Test");
- ClassGen cg = new ClassGen("Test","java.lang.Object",ACC_PUBLIC|ACC_SUPER|ACC_FINAL);
- FieldGen fg = cg.addField("foo",Type.INT,ACC_PUBLIC|ACC_STATIC);
+ public static void main(String[] args) throws Exception {
+ if (args.length==1) {
+ if (args[0].endsWith(".class")) {
+ System.out.println(new ClassGen(new DataInputStream(new FileInputStream(args[0]))));
+ } else {
+ InputStream is = Class.forName(args[0]).getClassLoader().getResourceAsStream(args[0].replace('.', '/')+".class");
+ System.out.println(new ClassGen(new DataInputStream(is)));
+ }
+ } else {
+ /*
+ Type.Object me = new Type.Object("Test");
+ ClassGen cg = new ClassGen("Test", "java.lang.Object", ACC_PUBLIC|ACC_SUPER|ACC_FINAL);
+ FieldGen fg = cg.addField("foo", Type.INT, ACC_PUBLIC|ACC_STATIC);
- MethodGen mg = cg.addMethod("main",Type.VOID,new Type[]{Type.arrayType(Type.STRING)},ACC_STATIC|ACC_PUBLIC);
- mg.setMaxLocals(1);
- mg.addPushConst(0);
- //mg.add(ISTORE_0);
- mg.add(PUTSTATIC, fieldRef(me,"foo",Type.INT));
- int top = mg.size();
- mg.add(GETSTATIC,cg.fieldRef(new Type.Object("java.lang.System"),"out",new Type.Object("java.io.PrintStream")));
- //mg.add(ILOAD_0);
- mg.add(GETSTATIC,cg.fieldRef(me,"foo",Type.INT));
- mg.add(INVOKEVIRTUAL,cg.methodRef(new Type.Object("java.io.PrintStream"),"println",Type.VOID, new Type[]{Type.INT}));
- //mg.add(IINC,new int[]{0,1});
- //mg.add(ILOAD_0);
- mg.add(GETSTATIC,cg.fieldRef(me,"foo",Type.INT));
- mg.addPushConst(1);
- mg.add(IADD);
- mg.add(DUP);
- mg.add(PUTSTATIC,cg.fieldRef(me,"foo",Type.INT));
- mg.addPushConst(10);
- mg.add(IF_ICMPLT,top);
- mg.add(RETURN);
- cg.dump("Test.class");
- }*/
+ MethodGen mg = cg.addMethod("main", Type.VOID, new Type[]{Type.arrayType(Type.STRING)}, ACC_STATIC|ACC_PUBLIC);
+ mg.setMaxLocals(1);
+ mg.addPushConst(0);
+ //mg.add(ISTORE_0);
+ mg.add(PUTSTATIC, fieldRef(me, "foo", Type.INT));
+ int top = mg.size();
+ mg.add(GETSTATIC, cg.fieldRef(new Type.Object("java.lang.System"), "out", new Type.Object("java.io.PrintStream")));
+ //mg.add(ILOAD_0);
+ mg.add(GETSTATIC, cg.fieldRef(me, "foo", Type.INT));
+ mg.add(INVOKEVIRTUAL, cg.methodRef(new Type.Object("java.io.PrintStream"), "println",
+ Type.VOID, new Type[]{Type.INT}));
+ //mg.add(IINC, new int[]{0, 1});
+ //mg.add(ILOAD_0);
+ mg.add(GETSTATIC, cg.fieldRef(me, "foo", Type.INT));
+ mg.addPushConst(1);
+ mg.add(IADD);
+ mg.add(DUP);
+ mg.add(PUTSTATIC, cg.fieldRef(me, "foo", Type.INT));
+ mg.addPushConst(10);
+ mg.add(IF_ICMPLT, top);
+ mg.add(RETURN);
+ cg.dump("Test.class");
+ */
+ }
+ }
}
projects / org.ibex.classgen.git / blobdiff