+++ /dev/null
-package org.ibex.classgen;
-
-import java.io.*;
-import java.util.*;
-
-public class AttrGen {
- private final CPGen cp;
- private final Hashtable ht = new Hashtable();
-
- public AttrGen(CPGen cp) {
- this.cp = cp;
- }
-
- public void add(String s, byte[] data) {
- cp.addUtf8(s);
- ht.put(s,data);
- }
-
- public boolean contains(String s) { return ht.get(s) != null; }
-
- public int size() { return ht.size(); }
-
- public void dump(DataOutput o) throws IOException {
- for(Enumeration e = ht.keys(); e.hasMoreElements();) {
- String name = (String) e.nextElement();
- byte[] val = (byte[]) ht.get(name);
- o.writeShort(cp.getUtf8Index(name));
- o.writeInt(val.length);
- o.write(val);
- }
- }
-}
private Hashtable entries = new Hashtable();
private int nextIndex = 1; // 0 is reserved
private int count;
- private boolean sealed;
+ private int state;
+ private static final int OPEN = 0;
+ private static final int STABLE = 1; // existing entries won't change
+ private static final int SEALED = 2; // no new entries
CPGen() { }
/*
* Methods
*/
- public void seal() { sealed = true; }
+ public void seal() { if(state >= SEALED) throw new IllegalStateException(); state = SEALED; }
+ public void stable() { if(state >= STABLE) throw new IllegalStateException(); state = STABLE; }
public final Ent get(Object o) { return (Ent) entries.get(o); }
public final Ent getUtf8(String s) { return get(new Utf8Key(s)); }
public final Ent addNameAndType(String name, String descriptor) { return add(new ClassGen.NameAndType(name,descriptor)); }
public final Ent addUtf8(String s) { return add(new Utf8Key(s)); }
- // FEATURE: Don't resolve indexes until dump (for optimize)
public final Ent add(Object o) {
- if(sealed) throw new IllegalStateException("constant pool is sealed");
+ if(state == SEALED) throw new IllegalStateException("constant pool is sealed");
Ent ent = get(o);
if(ent != null) return ent;
private Type.Object thisType;
private Type.Object superType;
int flags;
+ private String sourceFile;
private Vector interfaces = new Vector();
private Vector fields = new Vector();
return fg;
}
+ public void setSourceFile(String sourceFile) { this.sourceFile = sourceFile; }
+
public void dump(String s) throws IOException { dump(new File(s)); }
public void dump(File f) throws IOException {
if(f.isDirectory()) {
}
dump(new FileOutputStream(f));
}
+
public void dump(OutputStream os) throws IOException {
DataOutputStream dos = new DataOutputStream(new BufferedOutputStream(os));
_dump(dos);
cp.add(thisType);
cp.add(superType);
for(int i=0;i<interfaces.size();i++) cp.add((Type.Object)interfaces.elementAt(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();
+
cp.seal();
o.writeInt(0xcafebabe); // magic
attributes.dump(o); // attributes
}
- // FEATURE: Make some of these checked exceptions?
public static class Exn extends RuntimeException {
public Exn(String s) { super(s); }
}
-
- // FEATURE: Remove these - they are just here to be compatible with the old api
- public final static MethodRef methodRef(Type.Object c, String name, Type ret, Type[] args) {
- return new MethodRef(c,name,ret,args);
- }
- public final static FieldRef fieldRef(Type.Object c, String name, Type type) {
- return new FieldRef(c,name,type);
- }
public static class NameAndType {
String name;
public InterfaceMethodRef(Type.Object c, NameAndType t) { super(c,t); }
}
- public static void main(String[] args) throws Exception {
+ static class AttrGen {
+ private final CPGen cp;
+ private final Hashtable ht = new Hashtable();
+
+ public AttrGen(CPGen cp) {
+ this.cp = cp;
+ }
+
+ public void add(String s, Object data) {
+ cp.addUtf8(s);
+ ht.put(s,data);
+ }
+
+ public boolean contains(String s) { return ht.get(s) != null; }
+
+ public int size() { return ht.size(); }
+
+ public void dump(DataOutput o) throws IOException {
+ for(Enumeration e = ht.keys(); e.hasMoreElements();) {
+ String name = (String) e.nextElement();
+ Object val = ht.get(name);
+ o.writeShort(cp.getUtf8Index(name));
+ if(val instanceof byte[]) {
+ byte[] buf = (byte[]) val;
+ o.writeInt(buf.length);
+ o.write(buf);
+ } else if(val instanceof CPGen.Ent) {
+ o.writeInt(2);
+ o.writeShort(((CPGen.Ent)val).getIndex());
+ } else {
+ throw new Error("should never happen");
+ }
+ }
+ }
+ }
+
+ /*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);
mg.setMaxLocals(1);
mg.addPushConst(0);
//mg.add(ISTORE_0);
- mg.add(PUTSTATIC,cg.fieldRef(me,"foo",Type.INT));
+ 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(IF_ICMPLT,top);
mg.add(RETURN);
cg.dump("Test.class");
- }
+ }*/
}
private final Type ret;
private final Type[] args;
private final int flags;
- private final AttrGen attrs;
- private final AttrGen codeAttrs;
+ private final ClassGen.AttrGen attrs;
+ private final ClassGen.AttrGen codeAttrs;
private final Hashtable exnTable = new Hashtable();
private final Hashtable thrownExceptions = new Hashtable();
this.args = args;
this.flags = flags;
- attrs = new AttrGen(cp);
- codeAttrs = new AttrGen(cp);
+ attrs = new ClassGen.AttrGen(cp);
+ codeAttrs = new ClassGen.AttrGen(cp);
cp.addUtf8(name);
cp.addUtf8(getDescriptor());
}
public final int size() { return size; }
- // FEATURE: Deprecate this
- public final int addPushConst(int n) { return add(LDC,n); }
-
// These two are optimized for speed, they don't call set() below
public final int add(byte op) {
int s = size;
projects / org.ibex.classgen.git / commitdiff