Examples with ConstantNameAndType org.apache.bcel.classfile.ConstantNameAndType used on opensource projects

Example 1 with ConstantNameAndType

use of org.apache.bcel.classfile.ConstantNameAndType in project jop by jop-devel.

the class OldClinitOrder method findDependencies.

private Set findDependencies(OldClassInfo cli, OldMethodInfo mi, boolean inRec) {
    //		System.out.println("find dep. in "+cli.clazz.getClassName()+":"+mi.getMethod().getName());
    Method method = mi.getMethod();
    Set depends = new HashSet();
    if (method.isNative() || method.isAbstract()) {
        // subclasses???? :-(
        return depends;
    }
    ConstantPool cpool = cli.clazz.getConstantPool();
    ConstantPoolGen cpoolgen = new ConstantPoolGen(cpool);
    MethodGen mg = new MethodGen(method, cli.clazz.getClassName(), cpoolgen);
    InstructionList il = mg.getInstructionList();
    InstructionFinder f = new InstructionFinder(il);
    // find instructions that access the constant pool
    // collect all indices to constants in ClassInfo
    String cpInstr = "CPInstruction";
    for (Iterator it = f.search(cpInstr); it.hasNext(); ) {
        InstructionHandle[] match = (InstructionHandle[]) it.next();
        InstructionHandle first = match[0];
        CPInstruction ii = (CPInstruction) first.getInstruction();
        int idx = ii.getIndex();
        Constant co = cpool.getConstant(idx);
        ConstantClass cocl = null;
        Set addDepends = null;
        String clname;
        OldClassInfo clinfo;
        OldMethodInfo minfo;
        switch(co.getTag()) {
            case Constants.CONSTANT_Class:
                cocl = (ConstantClass) co;
                clname = cocl.getBytes(cpool).replace('/', '.');
                clinfo = (OldClassInfo) ai.cliMap.get(clname);
                if (clinfo != null) {
                    minfo = clinfo.getMethodInfo("<init>()V");
                    if (minfo != null) {
                        addDepends = findDependencies(clinfo, minfo, true);
                    }
                }
                break;
            case Constants.CONSTANT_InterfaceMethodref:
                cocl = (ConstantClass) cpool.getConstant(((ConstantInterfaceMethodref) co).getClassIndex());
                break;
            case Constants.CONSTANT_Methodref:
                cocl = (ConstantClass) cpool.getConstant(((ConstantMethodref) co).getClassIndex());
                clname = cocl.getBytes(cpool).replace('/', '.');
                clinfo = (OldClassInfo) ai.cliMap.get(clname);
                int sigidx = ((ConstantMethodref) co).getNameAndTypeIndex();
                ConstantNameAndType signt = (ConstantNameAndType) cpool.getConstant(sigidx);
                String sigstr = signt.getName(cpool) + signt.getSignature(cpool);
                if (clinfo != null) {
                    minfo = clinfo.getMethodInfo(sigstr);
                    if (minfo != null) {
                        addDepends = findDependencies(clinfo, minfo, true);
                    }
                }
                break;
            case Constants.CONSTANT_Fieldref:
                cocl = (ConstantClass) cpool.getConstant(((ConstantFieldref) co).getClassIndex());
                break;
        }
        if (cocl != null) {
            clname = cocl.getBytes(cpool).replace('/', '.');
            OldClassInfo clinf = (OldClassInfo) ai.cliMap.get(clname);
            if (clinf != null) {
                if (clinf.getMethodInfo(OldAppInfo.clinitSig) != null) {
                    // don't add myself as dependency
                    if (clinf != cli) {
                        depends.add(clinf);
                    }
                }
            }
        }
        if (addDepends != null) {
            Iterator itAddDep = addDepends.iterator();
            while (itAddDep.hasNext()) {
                OldClassInfo addCli = (OldClassInfo) itAddDep.next();
                if (addCli == cli) {
                    throw new Error("cyclic indirect <clinit> dependency");
                }
                depends.add(addCli);
            }
        }
    }
    il.dispose();
    return depends;
}

Example 2 with ConstantNameAndType

use of org.apache.bcel.classfile.ConstantNameAndType in project jop by jop-devel.

the class ReplaceNativeAndCPIdx method getFieldOffset.

/**
	 * Get field offset: relative offset for object fields, absolute
	 * addresses for static fields.
	 * 
	 * TODO: remove the dead code in constant pool replacement
	 * TODO: remove not used constants
	 * @param cp
	 * @param index
	 * @return
	 */
private int getFieldOffset(ConstantPool cp, int index) {
    // from ClassInfo.resolveCPool
    Constant co = cp.getConstant(index);
    int fidx = ((ConstantFieldref) co).getClassIndex();
    ConstantClass fcl = (ConstantClass) cp.getConstant(fidx);
    String fclname = fcl.getBytes(cp).replace('/', '.');
    // got the class name
    int sigidx = ((ConstantFieldref) co).getNameAndTypeIndex();
    ConstantNameAndType signt = (ConstantNameAndType) cp.getConstant(sigidx);
    String sigstr = signt.getName(cp) + signt.getSignature(cp);
    JopClassInfo clinf = (JopClassInfo) ai.cliMap.get(fclname);
    int j;
    boolean found = false;
    while (!found) {
        for (j = 0; j < clinf.clft.len; ++j) {
            if (clinf.clft.key[j].equals(sigstr)) {
                found = true;
                return clinf.clft.idx[j];
            }
        }
        if (!found) {
            clinf = (JopClassInfo) clinf.superClass;
            if (clinf == null) {
                System.out.println("Error: field " + fclname + "." + sigstr + " not found!");
                break;
            }
        }
    }
    System.out.println("Error in getFieldOffset()");
    System.exit(-1);
    return 0;
}

Example 3 with ConstantNameAndType

use of org.apache.bcel.classfile.ConstantNameAndType in project jop by jop-devel.

the class TransitiveHull method visitRef.

private void visitRef(ConstantCP ccp, boolean method) {
    String class_name = ccp.getClass(_cp);
    add(class_name);
    ConstantNameAndType cnat = (ConstantNameAndType) _cp.getConstant(ccp.getNameAndTypeIndex(), Constants.CONSTANT_NameAndType);
    String signature = cnat.getSignature(_cp);
    if (method) {
        Type type = Type.getReturnType(signature);
        if (type instanceof ObjectType) {
            add(((ObjectType) type).getClassName());
        }
        Type[] types = Type.getArgumentTypes(signature);
        for (int i = 0; i < types.length; i++) {
            type = types[i];
            if (type instanceof ObjectType) {
                add(((ObjectType) type).getClassName());
            }
        }
    } else {
        Type type = Type.getType(signature);
        if (type instanceof ObjectType) {
            add(((ObjectType) type).getClassName());
        }
    }
}

Example 4 with ConstantNameAndType

use of org.apache.bcel.classfile.ConstantNameAndType in project jop by jop-devel.

the class ConstantInfo method createFromConstant.

/**
     * Create a new constantInfo from a BCEL constant.
     * If the constantpool contains invalid data, a {@link JavaClassFormatError} is thrown.
     *
     * @param cp the constantpool used to resolve the index references.
     * @param constant the BCEL constant to convert
     * @return a new ConstantInfo containing the constant value.
     */
public static ConstantInfo createFromConstant(ConstantPool cp, Constant constant) {
    MemberID sig;
    MethodRef methodRef;
    ConstantNameAndType nRef;
    AppInfo appInfo = AppInfo.getSingleton();
    byte tag = constant.getTag();
    switch(tag) {
        case Constants.CONSTANT_Class:
            ClassRef classRef = appInfo.getClassRef(((ConstantClass) constant).getBytes(cp).replace('/', '.'));
            return new ConstantClassInfo(classRef);
        case Constants.CONSTANT_Fieldref:
            ConstantFieldref fRef = (ConstantFieldref) constant;
            nRef = (ConstantNameAndType) cp.getConstant(fRef.getNameAndTypeIndex());
            sig = new MemberID(fRef.getClass(cp), nRef.getName(cp), nRef.getSignature(cp));
            FieldRef fieldRef = appInfo.getFieldRef(sig);
            return new ConstantFieldInfo(fieldRef);
        case Constants.CONSTANT_Methodref:
            ConstantMethodref mRef = (ConstantMethodref) constant;
            nRef = (ConstantNameAndType) cp.getConstant(mRef.getNameAndTypeIndex());
            sig = new MemberID(mRef.getClass(cp), nRef.getName(cp), nRef.getSignature(cp));
            methodRef = appInfo.getMethodRef(sig, false);
            return new ConstantMethodInfo(methodRef);
        case Constants.CONSTANT_InterfaceMethodref:
            ConstantInterfaceMethodref imRef = (ConstantInterfaceMethodref) constant;
            nRef = (ConstantNameAndType) cp.getConstant(imRef.getNameAndTypeIndex());
            sig = new MemberID(imRef.getClass(cp), nRef.getName(cp), nRef.getSignature(cp));
            methodRef = appInfo.getMethodRef(sig, true);
            return new ConstantMethodInfo(methodRef);
        case Constants.CONSTANT_String:
            return new ConstantStringInfo(((ConstantString) constant).getBytes(cp), false);
        case Constants.CONSTANT_Integer:
            return new ConstantIntegerInfo(((ConstantInteger) constant).getBytes());
        case Constants.CONSTANT_Float:
            return new ConstantFloatInfo(((ConstantFloat) constant).getBytes());
        case Constants.CONSTANT_Long:
            return new ConstantLongInfo(((ConstantLong) constant).getBytes());
        case Constants.CONSTANT_Double:
            return new ConstantDoubleInfo(((ConstantDouble) constant).getBytes());
        case Constants.CONSTANT_NameAndType:
            String name = ((ConstantNameAndType) constant).getName(cp);
            String signature = ((ConstantNameAndType) constant).getSignature(cp);
            return new ConstantNameAndTypeInfo(new MemberID(name, signature));
        case Constants.CONSTANT_Utf8:
            return new ConstantStringInfo(((ConstantUtf8) constant).getBytes(), true);
        default:
            throw new JavaClassFormatError("Invalid byte tag in constant pool: " + tag);
    }
}

Example 5 with ConstantNameAndType

use of org.apache.bcel.classfile.ConstantNameAndType in project jop by jop-devel.

the class ConstantPoolRebuilder method copyConstant.

public static Constant copyConstant(Map<Integer, Integer> idMap, Constant c) {
    if (c instanceof ConstantClass) {
        int index = ((ConstantClass) c).getNameIndex();
        return new ConstantClass(idMap.get(index));
    } else if (c instanceof ConstantFieldref) {
        int clsIdx = ((ConstantFieldref) c).getClassIndex();
        int nameIdx = ((ConstantFieldref) c).getNameAndTypeIndex();
        return new ConstantFieldref(idMap.get(clsIdx), idMap.get(nameIdx));
    } else if (c instanceof ConstantMethodref) {
        int clsIdx = ((ConstantMethodref) c).getClassIndex();
        int nameIdx = ((ConstantMethodref) c).getNameAndTypeIndex();
        return new ConstantMethodref(idMap.get(clsIdx), idMap.get(nameIdx));
    } else if (c instanceof ConstantInterfaceMethodref) {
        int clsIdx = ((ConstantInterfaceMethodref) c).getClassIndex();
        int nameIdx = ((ConstantInterfaceMethodref) c).getNameAndTypeIndex();
        return new ConstantInterfaceMethodref(idMap.get(clsIdx), idMap.get(nameIdx));
    } else if (c instanceof ConstantString) {
        int index = ((ConstantString) c).getStringIndex();
        return new ConstantString(idMap.get(index));
    } else if (c instanceof ConstantInteger) {
        return new ConstantInteger((ConstantInteger) c);
    } else if (c instanceof ConstantFloat) {
        return new ConstantFloat((ConstantFloat) c);
    } else if (c instanceof ConstantLong) {
        return new ConstantLong((ConstantLong) c);
    } else if (c instanceof ConstantDouble) {
        return new ConstantDouble((ConstantDouble) c);
    } else if (c instanceof ConstantNameAndType) {
        int nameIdx = ((ConstantNameAndType) c).getNameIndex();
        int sigIdx = ((ConstantNameAndType) c).getSignatureIndex();
        return new ConstantNameAndType(idMap.get(nameIdx), idMap.get(sigIdx));
    } else if (c instanceof ConstantUtf8) {
        return new ConstantUtf8((ConstantUtf8) c);
    }
    throw new JavaClassFormatError("Unknown constant type " + c);
}