Examples with BadBytecode javassist.bytecode.BadBytecode used on opensource projects

Example 21 with BadBytecode

use of javassist.bytecode.BadBytecode in project javassist by jboss-javassist.

the class Analyzer method mergeJsr.

private void mergeJsr(IntQueue queue, Frame frame, Subroutine sub, int pos, int next) throws BadBytecode {
    if (sub == null)
        throw new BadBytecode("No subroutine at jsr target! [pos = " + pos + "]");
    Frame old = frames[next];
    boolean changed = false;
    if (old == null) {
        old = frames[next] = frame.copy();
        changed = true;
    } else {
        for (int i = 0; i < frame.localsLength(); i++) {
            // Skip everything accessed by a subroutine, mergeRet must handle this
            if (!sub.isAccessed(i)) {
                Type oldType = old.getLocal(i);
                Type newType = frame.getLocal(i);
                if (oldType == null) {
                    old.setLocal(i, newType);
                    changed = true;
                    continue;
                }
                newType = oldType.merge(newType);
                // Always set the type, in case a multi-type switched to a standard type.
                old.setLocal(i, newType);
                if (!newType.equals(oldType) || newType.popChanged())
                    changed = true;
            }
        }
    }
    if (!old.isJsrMerged()) {
        old.setJsrMerged(true);
        changed = true;
    }
    if (changed && old.isRetMerged())
        queue.add(next);
}

Example 22 with BadBytecode

use of javassist.bytecode.BadBytecode in project javassist by jboss-javassist.

the class Analyzer method mergeRet.

private void mergeRet(IntQueue queue, CodeIterator iter, int pos, Frame frame, Subroutine subroutine) throws BadBytecode {
    if (subroutine == null)
        throw new BadBytecode("Ret on no subroutine! [pos = " + pos + "]");
    for (int caller : subroutine.callers()) {
        int returnLoc = getNext(iter, caller, pos);
        boolean changed = false;
        Frame old = frames[returnLoc];
        if (old == null) {
            old = frames[returnLoc] = frame.copyStack();
            changed = true;
        } else {
            changed = old.mergeStack(frame);
        }
        for (int index : subroutine.accessed()) {
            Type oldType = old.getLocal(index);
            Type newType = frame.getLocal(index);
            if (oldType != newType) {
                old.setLocal(index, newType);
                changed = true;
            }
        }
        if (!old.isRetMerged()) {
            old.setRetMerged(true);
            changed = true;
        }
        if (changed && old.isJsrMerged())
            queue.add(returnLoc);
    }
}

Example 23 with BadBytecode

use of javassist.bytecode.BadBytecode in project javassist by jboss-javassist.

the class Executor method paramTypesFromDesc.

private Type[] paramTypesFromDesc(String desc) throws BadBytecode {
    CtClass[] classes = null;
    try {
        classes = Descriptor.getParameterTypes(desc, classPool);
    } catch (NotFoundException e) {
        throw new BadBytecode("Could not find class in descriptor [pos = " + lastPos + "]: " + e.getMessage());
    }
    if (classes == null)
        throw new BadBytecode("Could not obtain parameters for descriptor [pos = " + lastPos + "]: " + desc);
    Type[] types = new Type[classes.length];
    for (int i = 0; i < types.length; i++) types[i] = Type.get(classes[i]);
    return types;
}

Example 24 with BadBytecode

use of javassist.bytecode.BadBytecode in project javassist by jboss-javassist.

the class MapMaker method make.

/*
    public static void main(String[] args) throws Exception {
        boolean useMain2 = args[0].equals("0");
        if (useMain2 && args.length > 1) {
            main2(args);
            return;
        }

        for (int i = 0; i < args.length; i++)
            main1(args[i]);
    }

    public static void main1(String className) throws Exception {
        ClassPool cp = ClassPool.getDefault();
        //javassist.CtClass cc = cp.get(className);
        javassist.CtClass cc = cp.makeClass(new java.io.FileInputStream(className));
        System.out.println(className);
        ClassFile cf = cc.getClassFile();
        java.util.List minfos = cf.getMethods();
        for (int i = 0; i < minfos.size(); i++) {
            MethodInfo minfo = (MethodInfo)minfos.get(i);
            CodeAttribute ca = minfo.getCodeAttribute();
            if (ca != null)
                ca.setAttribute(make(cp, minfo));
        }

        cc.writeFile("tmp");
    }

    public static void main2(String[] args) throws Exception {
        ClassPool cp = ClassPool.getDefault();
        //javassist.CtClass cc = cp.get(args[1]);
        javassist.CtClass cc = cp.makeClass(new java.io.FileInputStream(args[1]));
        MethodInfo minfo;
        if (args[2].equals("_init_"))
            minfo = cc.getDeclaredConstructors()[0].getMethodInfo();
            // minfo = cc.getClassInitializer().getMethodInfo();
        else
            minfo = cc.getDeclaredMethod(args[2]).getMethodInfo();

        CodeAttribute ca = minfo.getCodeAttribute();
        if (ca == null) {
            System.out.println("abstarct method");
            return;
        }

        TypedBlock[] blocks = TypedBlock.makeBlocks(minfo, ca, false);
        MapMaker mm = new MapMaker(cp, minfo, ca);
        mm.make(blocks, ca.getCode());
        for (int i = 0; i < blocks.length; i++)
            System.out.println(blocks[i]);
    }
    */
/**
 * Computes the stack map table of the given method and returns it.
 * It returns null if the given method does not have to have a
 * stack map table or it includes JSR.
 */
public static StackMapTable make(ClassPool classes, MethodInfo minfo) throws BadBytecode {
    CodeAttribute ca = minfo.getCodeAttribute();
    if (ca == null)
        return null;
    TypedBlock[] blocks;
    try {
        blocks = TypedBlock.makeBlocks(minfo, ca, true);
    } catch (BasicBlock.JsrBytecode e) {
        return null;
    }
    if (blocks == null)
        return null;
    MapMaker mm = new MapMaker(classes, minfo, ca);
    try {
        mm.make(blocks, ca.getCode());
    } catch (BadBytecode bb) {
        throw new BadBytecode(minfo, bb);
    }
    return mm.toStackMap(blocks);
}

Example 25 with BadBytecode

use of javassist.bytecode.BadBytecode in project javassist by jboss-javassist.

the class TypeData method aastore.

public static void aastore(TypeData array, TypeData value, ClassPool cp) throws BadBytecode {
    if (array instanceof AbsTypeVar)
        if (!value.isNullType())
            ((AbsTypeVar) array).merge(ArrayType.make(value));
    if (value instanceof AbsTypeVar)
        if (array instanceof AbsTypeVar)
            // should call value.setType() later.
            ArrayElement.make(array);
        else if (array instanceof ClassName) {
            if (!array.isNullType()) {
                String type = ArrayElement.typeName(array.getName());
                value.setType(type, cp);
            }
        } else
            throw new BadBytecode("bad AASTORE: " + array);
}