import java.io.*;
/** Class generation object representing the whole classfile */
-public class ClassFile implements CGConst {
+public class ClassFile extends Type.Class.Body {
private final Type.Class thisType;
- private final Type.Class superType;
- private final Type.Class[] interfaces;
- private short minor;
- private short major;
- final int flags;
+ final Type.Class superType;
+ final Type.Class[] interfaces;
+ private final short minor;
+ private final short major;
- private String sourceFile;
private final Vector fields = new Vector();
private final Vector methods = new Vector();
-
- final CPGen cp;
- private final AttrGen attributes;
- 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 ";
+ public Type.Class.Method.Body[] methods() {
+ Type.Class.Method.Body[] ret = new Type.Class.Method.Body[methods.size()];
+ methods.copyInto(ret);
+ return ret;
+ }
+
+ public Type.Class.Field.Body[] fields() {
+ Type.Class.Field.Body[] ret = new Type.Class.Field.Body[fields.size()];
+ fields.copyInto(ret);
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);
- if (superType != null) sb.append(" extends " + superType);
+
+ static String flagsToString(int flags, boolean isClass) {
+ StringBuffer sb = new StringBuffer(32);
+ if ((flags & PUBLIC) != 0) sb.append("public ");
+ if ((flags & PRIVATE) != 0) sb.append("private ");
+ if ((flags & PROTECTED) != 0) sb.append("protected ");
+ if ((flags & STATIC) != 0) sb.append("static ");
+ if ((flags & FINAL) != 0) sb.append("final ");
+ if ((flags & ABSTRACT) != 0) sb.append("abstract ");
+ if (!isClass && (flags & SYNCHRONIZED) != 0) sb.append("synchronized ");
+ if (!isClass && (flags & NATIVE) != 0) sb.append("native ");
+ if (!isClass && (flags & STRICT) != 0) sb.append("strictfp ");
+ if (!isClass && (flags & VOLATILE) != 0) sb.append("volatile ");
+ if (!isClass && (flags & TRANSIENT) != 0) sb.append("transient ");
+ return sb.toString();
+ }
+
+ public Type.Class getType() { return thisType; }
+ public int getFlags() { return flags; }
+
+ public String toString() { return toString(new StringBuffer(4096)).toString(); }
+ StringBuffer toString(StringBuffer sb) {
+ sb.append(flagsToString(flags,true));
+ sb.append((flags & INTERFACE) != 0 ? "interface " : "class ");
+ sb.append(thisType.toString());
+ if (superType != null) sb.append(" extends " + superType.toString());
if (interfaces != null && interfaces.length > 0) sb.append(" implements");
- for(int i=0; i<interfaces.length; i++) sb.append((i==0?" ":", ")+interfaces[i]);
+ for(int i=0; i<interfaces.length; i++) sb.append((i==0?" ":", ")+interfaces[i].toString());
sb.append(" {");
- sb.append(" // [jcf v"+major+"."+minor+"]");
- if (sourceFile != null) sb.append(" from " + sourceFile);
+ sb.append(" // v"+major+"."+minor);
+ ConstantPool.Utf8Key sourceFile = (ConstantPool.Utf8Key) attrs.get("SourceFile");
+ if (sourceFile != null) sb.append(" from " + sourceFile.s);
sb.append("\n");
for(int i=0; i<fields.size(); i++) {
sb.append(" ");
sb.append("\n");
}
for(int i=0; i<methods.size(); i++) {
- sb.append(" ");
- ((MethodGen)methods.elementAt(i)).toString(sb, thisType.getShortName());
+ ((MethodGen)methods.elementAt(i)).toString(sb,thisType.getShortName());
sb.append("\n");
}
sb.append("}");
+ return sb;
}
- /** @see #ClassFile(Type.Class, Type.Class, int) */
- public ClassFile(String name, String superName, int flags) {
- this(Type.instance(name).asClass(), Type.instance(superName).asClass(), flags);
- }
-
- /** @see #ClassFile(Type.Class, Type.Class, int, Type.Class[]) */
- public ClassFile(Type.Class thisType, Type.Class superType, int flags) {
- this(thisType, superType, flags, null);
- }
-
- /** Creates a new ClassFile object
- @param thisType The type of the class to generate
- @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 ClassFile(Type.Class thisType, Type.Class superType, int flags) { this(thisType, superType, flags, null); }
public ClassFile(Type.Class thisType, Type.Class superType, int flags, Type.Class[] interfaces) {
- if((flags & ~(ACC_PUBLIC|ACC_FINAL|ACC_SUPER|ACC_INTERFACE|ACC_ABSTRACT)) != 0)
- throw new IllegalArgumentException("invalid flags");
+ thisType.super(flags, new AttrGen());
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);
+ this.major = 45;
}
/** Adds a new method to this class
@param ret The return type of the method
@param args The arguments to the method
@param flags The flags for the method
- (ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_SYNCHRONIZED, ACC_NATIVE, ACC_ABSTRACT, ACC_STRICT)
+ (PUBLIC, PRIVATE, PROTECTED, STATIC, SYNCHRONIZED, NATIVE, ABSTRACT, STRICT)
@return A new MethodGen object for the method
@exception IllegalArgumentException if illegal flags are specified
@see MethodGen
@see CGConst
*/
public final MethodGen addMethod(String name, Type ret, Type[] args, int flags) {
- MethodGen mg = new MethodGen(this, name, ret, args, flags);
+ return addMethod(getType().method(name, ret, args),flags);
+ }
+ public final MethodGen addMethod(Type.Class.Method method,int flags) {
+ MethodGen mg = new MethodGen(method, flags);
+ methods.addElement(mg);
+ return mg;
+ }
+ public final MethodGen addMethod(Type.Class.Method m, int flags) {
+ MethodGen mg = new MethodGen(m, flags);
methods.addElement(mg);
return mg;
}
@param name The name of the filed (not the signature, just the name)
@param type The type of the field
@param flags The flags for the field
- (ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL, ACC_VOLATILE, ACC_TRANSIENT)
+ (PUBLIC, PRIVATE, PROTECTED, STATIC, FINAL, VOLATILE, TRANSIENT)
@return A new FieldGen object for the method
@exception IllegalArgumentException if illegal flags are specified
@see FieldGen
@see CGConst
*/
public final FieldGen addField(String name, Type type, int flags) {
- FieldGen fg = new FieldGen(this, name, type, flags);
+ return addField(getType().field(name,type),flags);
+ }
+ public final FieldGen addField(Type.Class.Field field, int flags) {
+ FieldGen fg = new FieldGen(field , flags);
fields.addElement(fg);
return fg;
}
/** Sets the source value of the SourceFile attribute of this class
@param sourceFile The string to be uses as the SourceFile of this class
*/
- public void setSourceFile(String sourceFile) { this.sourceFile = sourceFile; }
+ public void setSourceFile(String sourceFile) { attrs.put("SourceFile", new ConstantPool.Utf8Key(sourceFile)); }
/** Writes the classfile data to the file specifed
@see ClassFile#dump(OutputStream)
}
private void _dump(DataOutput o) throws IOException {
- cp.optimize();
- cp.stable();
-
+ ConstantPool cp = new ConstantPool();
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));
-
- 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();
+ for(int i=0;i<methods.size();i++) ((MethodGen)methods.elementAt(i)).finish(cp);
+ for(int i=0;i<fields.size();i++) ((FieldGen)fields.elementAt(i)).finish(cp);
+ attrs.finish(cp);
+ cp.optimize();
cp.seal();
o.writeInt(0xcafebabe); // magic
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
+ for(int i=0;i<fields.size();i++) ((FieldGen)fields.elementAt(i)).dump(o,cp); // fields
o.writeShort(methods.size()); // methods_count
- for(int i=0;i<methods.size();i++) ((MethodGen)methods.elementAt(i)).dump(o); // methods
+ for(int i=0;i<methods.size();i++) ((MethodGen)methods.elementAt(i)).dump(o,cp); // methods
- o.writeShort(attributes.size()); // attributes_count
- attributes.dump(o); // attributes
+ attrs.dump(o,cp); // attributes
}
- public ClassFile read(File f) throws ClassReadExn, IOException {
+ public static ClassFile read(String s) throws IOException { return read(new File(s)); }
+ public static ClassFile read(File f) throws ClassReadExn, IOException {
InputStream is = new FileInputStream(f);
ClassFile ret = read(is);
is.close();
return ret;
}
- public ClassFile read(InputStream is) throws ClassReadExn, IOException {
- return new ClassFile(new DataInputStream(new BufferedInputStream(is)));
+ public static ClassFile read(InputStream is) throws ClassReadExn, IOException {
+ try {
+ return new ClassFile(new DataInputStream(new BufferedInputStream(is)));
+ } catch(RuntimeException e) {
+ e.printStackTrace();
+ throw new ClassReadExn("invalid constant pool entry");
+ }
}
- ClassFile(DataInput i) throws ClassReadExn, IOException {
- int magic = i.readInt();
+ public ClassFile(DataInput i) throws IOException { this(i, false); }
+ public ClassFile(DataInput i, boolean ssa) throws IOException {
+ this(i.readInt(), i.readShort(), i.readShort(), new ConstantPool(i), i.readShort(), i, ssa);
+ }
+ private ClassFile(int magic, short minor, short major, ConstantPool cp,
+ short flags, DataInput i, boolean ssa) throws IOException {
+ this(magic, minor, major, cp, flags, (Type.Class)cp.getKeyByIndex(i.readShort()), i, ssa);
+ }
+ private ClassFile(int magic, short minor, short major, ConstantPool cp, short flags,
+ Type.Class thisType, DataInput i, boolean ssa) throws IOException {
+ thisType.super(flags, null);
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 = i.readShort();
- thisType = (Type.Class)cp.getType(i.readShort());
- superType = (Type.Class)cp.getType(i.readShort());
+ this.minor = minor;
+ this.major = major;
+ this.thisType = thisType;
+ superType = (Type.Class) cp.getKeyByIndex(i.readShort());
interfaces = new Type.Class[i.readShort()];
- for(int j=0; j<interfaces.length; j++) interfaces[j] = (Type.Class)cp.getType(i.readShort());
+ for(int j=0; j<interfaces.length; j++) interfaces[j] = (Type.Class) cp.getKeyByIndex(i.readShort());
int numFields = i.readShort();
- for(int j=0; j<numFields; j++) fields.add(new FieldGen(cp, i));
+ for(int j=0; j<numFields; j++) fields.addElement(new FieldGen(this.getType(), i, cp));
int numMethods = i.readShort();
- for(int j=0; j<numMethods; j++) methods.add(new MethodGen(cp, i));
- attributes = new AttrGen(cp, i);
- sourceFile = (String)attributes.get("SourceFile");
+ for(int j=0; j<numMethods; j++) methods.addElement(ssa
+ ? new JSSA(this.getType(), i, cp)
+ : new MethodGen(this.getType(), i, cp));
+ readAttributes(i, cp);
+
+ // FEATURE: Support these
+ // NOTE: Until we can support them properly we HAVE to delete them,
+ // they'll be incorrect after we rewrite the constant pool, etc
+ attrs.remove("InnerClasses");
}
/** Thrown when class generation fails for a reason not under the control of the user
(IllegalStateExceptions are thrown in those cases */
+ // FEATURE: This should probably be a checked exception
public static class Exn extends RuntimeException {
public Exn(String s) { super(s); }
}
}
static class AttrGen {
- private final CPGen cp;
private final Hashtable ht = new Hashtable();
- public AttrGen(CPGen cp) { this.cp = cp; }
- public AttrGen(CPGen cp, DataInput in) throws IOException {
- this(cp);
+ AttrGen() { }
+ AttrGen(DataInput in, ConstantPool cp) throws IOException {
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();
-
+ String name = cp.getUtf8KeyByIndex(in.readUnsignedShort());
int length = in.readInt();
- if (length==2) { // FIXME might be wrong assumption
- ht.put(name, cp.getByIndex(in.readShort()));
+ if ((name.equals("SourceFile")||name.equals("ConstantValue")) && length == 2) {
+ ht.put(name, cp.getKeyByIndex(in.readUnsignedShort()));
} else {
byte[] buf = new byte[length];
in.readFully(buf);
}
}
- 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);
- }
-
+ public Object get(String s) { return ht.get(s); }
+ public void put(String s, Object data) { ht.put(s, data); }
public boolean contains(String s) { return ht.get(s) != null; }
-
+ public void remove(String s) { ht.remove(s); }
public int size() { return ht.size(); }
- public void dump(DataOutput o) throws IOException {
+ void finish(ConstantPool cp) {
+ for(Enumeration e = ht.keys(); e.hasMoreElements();) {
+ String name = (String) e.nextElement();
+ Object val = ht.get(name);
+ cp.addUtf8(name);
+ if(!(val instanceof byte[])) cp.add(val);
+ }
+ }
+
+ void dump(DataOutput o, ConstantPool cp) throws IOException {
+ o.writeShort(size());
for(Enumeration e = ht.keys(); e.hasMoreElements();) {
String name = (String) e.nextElement();
Object val = ht.get(name);
byte[] buf = (byte[]) val;
o.writeInt(buf.length);
o.write(buf);
- } else if(val instanceof CPGen.Ent) {
- o.writeInt(2);
- o.writeShort(cp.getIndex((CPGen.Ent)val));
} else {
- throw new Error("should never happen");
+ o.writeInt(2);
+ o.writeShort(cp.getIndex(val));
}
}
}
}
public static void main(String[] args) throws Exception {
- if (args.length==1) {
+ if(args.length >= 2 && args[0].equals("copyto")) {
+ File dest = new File(args[1]);
+ dest.mkdirs();
+ for(int i=2;i<args.length;i++) {
+ System.err.println("Copying " + args[i]);
+ read(args[i]).dump(dest);
+ }
+ }
+ else if (args.length==1) {
if (args[0].endsWith(".class")) {
- System.out.println(new ClassFile(new DataInputStream(new FileInputStream(args[0]))));
+ System.out.println(new ClassFile(new DataInputStream(new FileInputStream(args[0]))).toString());
} else {
InputStream is = Class.forName(args[0]).getClassLoader().getResourceAsStream(args[0].replace('.', '/')+".class");
- System.out.println(new ClassFile(new DataInputStream(is)));
+ System.out.println(new ClassFile(new DataInputStream(is)).toString());
}
} else {
/*
Type.Class me = new Type.Class("Test");
- ClassFile cg = new ClassFile("Test", "java.lang.Object", ACC_PUBLIC|ACC_SUPER|ACC_FINAL);
- FieldGen fg = cg.addField("foo", Type.INT, ACC_PUBLIC|ACC_STATIC);
+ ClassFile cg = new ClassFile("Test", "java.lang.Object", PUBLIC|SUPER|FINAL);
+ FieldGen fg = cg.addField("foo", Type.INT, PUBLIC|STATIC);
- MethodGen mg = cg.addMethod("main", Type.VOID, new Type[]{Type.arrayType(Type.STRING)}, ACC_STATIC|ACC_PUBLIC);
+ MethodGen mg = cg.addMethod("main", Type.VOID, new Type[]{Type.arrayType(Type.STRING)}, STATIC|PUBLIC);
mg.setMaxLocals(1);
mg.addPushConst(0);
//mg.add(ISTORE_0);
projects / org.ibex.classgen.git / blobdiff