Examples with ClassFile net.runelite.asm.ClassFile used on opensource projects

Example 36 with ClassFile

use of net.runelite.asm.ClassFile in project runelite by runelite.

the class UnreachedCode method run.

@Override
public void run(ClassGroup group) {
    group.buildClassGraph();
    execution = new Execution(group);
    execution.populateInitialMethods();
    execution.run();
    int count = 0;
    for (ClassFile cf : group.getClasses()) {
        for (Method m : cf.getMethods()) {
            if (m.getCode() == null)
                continue;
            count += removeUnused(m);
        }
    }
    logger.info("Removed {} unused instructions", count);
}

Example 37 with ClassFile

use of net.runelite.asm.ClassFile in project runelite by runelite.

the class UnusedParameters method removeParameter.

public void removeParameter(ClassGroup group, List<Method> methods, Signature signature, Execution execution, int paramIndex, int lvtIndex) {
    int slots = signature.getTypeOfArg(paramIndex).getSize();
    for (ClassFile cf : group.getClasses()) {
        for (Method m : cf.getMethods()) {
            Code c = m.getCode();
            if (c == null) {
                continue;
            }
            for (Instruction i : new ArrayList<>(c.getInstructions().getInstructions())) {
                if (!(i instanceof InvokeInstruction)) {
                    continue;
                }
                InvokeInstruction ii = (InvokeInstruction) i;
                if (!ii.getMethods().stream().anyMatch(me -> methods.contains(me))) {
                    continue;
                }
                // remove parameter from instruction
                ii.removeParameter(paramIndex);
                Collection<InstructionContext> ics = invokes.get(i);
                assert ics != null;
                if (ics != null) {
                    for (InstructionContext ins : ics) {
                        // index from top of stack of parameter. 0 is the last parameter
                        int pops = signature.size() - paramIndex - 1;
                        StackContext sctx = ins.getPops().get(pops);
                        if (sctx.getPushed().getInstruction().getInstructions() == null) {
                            continue;
                        }
                        // remove parameter from stack
                        ins.removeStack(pops);
                    }
                }
            }
        }
    }
    for (Method method : methods) {
        if (method.getCode() != null) // adjust lvt indexes to get rid of idx in the method
        {
            for (Instruction ins : method.getCode().getInstructions().getInstructions()) {
                if (ins instanceof LVTInstruction) {
                    LVTInstruction lins = (LVTInstruction) ins;
                    int i = lins.getVariableIndex();
                    // current unused variable detection just looks for no accesses
                    assert i != lvtIndex;
                    // reassign
                    if (i > lvtIndex) {
                        assert i > 0;
                        assert i >= lvtIndex + slots;
                        Instruction newIns = lins.setVariableIndex(i - slots);
                        assert ins == newIns;
                    }
                }
            }
        }
    }
    for (Method method : methods) {
        method.getDescriptor().remove(paramIndex);
    }
}

Example 38 with ClassFile

use of net.runelite.asm.ClassFile in project runelite by runelite.

the class PutField method getMyField.

@Override
public net.runelite.asm.Field getMyField() {
    Class clazz = field.getClazz();
    ClassGroup group = this.getInstructions().getCode().getMethod().getClassFile().getGroup();
    ClassFile cf = group.findClass(clazz.getName());
    if (cf == null) {
        return null;
    }
    net.runelite.asm.Field f2 = cf.findFieldDeep(field.getName(), field.getType());
    return f2;
}

Example 39 with ClassFile

use of net.runelite.asm.ClassFile in project runelite by runelite.

the class EnumDeobfuscator method run.

@Override
public void run(ClassGroup group) {
    for (ClassFile cf : group.getClasses()) {
        if (!isEnum(cf) || cf.isEnum()) {
            continue;
        }
        logger.info("Converting {} to an enum", cf.getName());
        makeEnum(cf);
    }
}

Example 40 with ClassFile

use of net.runelite.asm.ClassFile in project runelite by runelite.

the class VirtualMethods method findBaseMethods.

// find the base methods for a method. search goes up from there to see if two
// different methods can be invoked with the same instruction.
private static List<Method> findBaseMethods(List<Method> methods, ClassFile cf, String name, Signature type) {
    if (cf == null)
        return methods;
    Method m = cf.findMethod(name, type);
    if (m != null && !m.isStatic())
        methods.add(m);
    List<Method> parentMethods = findBaseMethods(new ArrayList<>(), cf.getParent(), name, type);
    for (ClassFile inter : cf.getInterfaces().getMyInterfaces()) parentMethods.addAll(findBaseMethods(new ArrayList<>(), inter, name, type));
    // parentMethods take precedence over our methods
    return parentMethods.isEmpty() ? methods : parentMethods;
}