Examples with SSAVar jadx.core.dex.instructions.args.SSAVar used on opensource projects

Example 16 with SSAVar

use of jadx.core.dex.instructions.args.SSAVar in project jadx by skylot.

the class ConstInlineVisitor method checkInsn.

private static boolean checkInsn(MethodNode mth, InsnNode insn) {
    if (insn.getType() != InsnType.CONST || insn.contains(AFlag.DONT_INLINE)) {
        return false;
    }
    InsnArg arg = insn.getArg(0);
    if (!arg.isLiteral()) {
        return false;
    }
    long lit = ((LiteralArg) arg).getLiteral();
    SSAVar sVar = insn.getResult().getSVar();
    if (lit == 0 && checkObjectInline(sVar)) {
        if (sVar.getUseCount() == 1) {
            InsnNode assignInsn = insn.getResult().getAssignInsn();
            if (assignInsn != null) {
                assignInsn.add(AFlag.DONT_INLINE);
            }
        }
        return false;
    }
    ArgType resType = insn.getResult().getType();
    // make sure arg has correct type
    if (!arg.getType().isTypeKnown()) {
        arg.merge(mth.dex(), resType);
    }
    return replaceConst(mth, insn, lit);
}

Example 17 with SSAVar

use of jadx.core.dex.instructions.args.SSAVar in project jadx by skylot.

the class NameGen method guessName.

private String guessName(RegisterArg arg) {
    SSAVar sVar = arg.getSVar();
    if (sVar != null && sVar.getName() == null) {
        RegisterArg assignArg = sVar.getAssign();
        InsnNode assignInsn = assignArg.getParentInsn();
        if (assignInsn != null) {
            String name = makeNameFromInsn(assignInsn);
            if (name != null && !NameMapper.isReserved(name)) {
                assignArg.setName(name);
                return name;
            }
        }
    }
    return makeNameForType(arg.getType());
}

Example 18 with SSAVar

use of jadx.core.dex.instructions.args.SSAVar in project jadx by skylot.

the class MethodGen method addMethodArguments.

private void addMethodArguments(CodeWriter argsCode, List<RegisterArg> args) {
    MethodParameters paramsAnnotation = mth.get(AType.ANNOTATION_MTH_PARAMETERS);
    int i = 0;
    for (Iterator<RegisterArg> it = args.iterator(); it.hasNext(); ) {
        RegisterArg arg = it.next();
        // add argument annotation
        if (paramsAnnotation != null) {
            annotationGen.addForParameter(argsCode, paramsAnnotation, i);
        }
        SSAVar argSVar = arg.getSVar();
        if (argSVar != null && argSVar.contains(AFlag.FINAL)) {
            argsCode.add("final ");
        }
        if (!it.hasNext() && mth.getAccessFlags().isVarArgs()) {
            // change last array argument to varargs
            ArgType type = arg.getType();
            if (type.isArray()) {
                ArgType elType = type.getArrayElement();
                classGen.useType(argsCode, elType);
                argsCode.add("...");
            } else {
                LOG.warn(ErrorsCounter.formatErrorMsg(mth, "Last argument in varargs method not array"));
                classGen.useType(argsCode, arg.getType());
            }
        } else {
            classGen.useType(argsCode, arg.getType());
        }
        argsCode.add(' ');
        argsCode.add(nameGen.assignArg(arg));
        i++;
        if (it.hasNext()) {
            argsCode.add(", ");
        }
    }
}

Example 19 with SSAVar

use of jadx.core.dex.instructions.args.SSAVar in project jadx by skylot.

the class ClassModifier method removeSyntheticMethods.

private static void removeSyntheticMethods(ClassNode cls) {
    for (MethodNode mth : cls.getMethods()) {
        if (mth.isNoCode()) {
            continue;
        }
        AccessInfo af = mth.getAccessFlags();
        // remove bridge methods
        if (af.isBridge() && af.isSynthetic() && !isMethodUniq(cls, mth)) {
            // TODO add more checks before method deletion
            mth.add(AFlag.DONT_GENERATE);
            continue;
        }
        // remove synthetic constructor for inner classes
        if (af.isSynthetic() && af.isConstructor() && mth.getBasicBlocks().size() == 2) {
            List<InsnNode> insns = mth.getBasicBlocks().get(0).getInstructions();
            if (insns.size() == 1 && insns.get(0).getType() == InsnType.CONSTRUCTOR) {
                ConstructorInsn constr = (ConstructorInsn) insns.get(0);
                List<RegisterArg> args = mth.getArguments(false);
                if (constr.isThis() && !args.isEmpty()) {
                    // remove first arg for non-static class (references to outer class)
                    if (args.get(0).getType().equals(cls.getParentClass().getClassInfo().getType())) {
                        args.get(0).add(AFlag.SKIP_ARG);
                    }
                    // remove unused args
                    for (RegisterArg arg : args) {
                        SSAVar sVar = arg.getSVar();
                        if (sVar != null && sVar.getUseCount() == 0) {
                            arg.add(AFlag.SKIP_ARG);
                        }
                    }
                    mth.add(AFlag.DONT_GENERATE);
                }
            }
        }
    }
}

Example 20 with SSAVar

use of jadx.core.dex.instructions.args.SSAVar in project jadx by skylot.

the class CodeShrinker method shrinkBlock.

private static void shrinkBlock(MethodNode mth, BlockNode block) {
    if (block.getInstructions().isEmpty()) {
        return;
    }
    InsnList insnList = new InsnList(block.getInstructions());
    int insnCount = insnList.size();
    List<ArgsInfo> argsList = new ArrayList<ArgsInfo>(insnCount);
    for (int i = 0; i < insnCount; i++) {
        argsList.add(new ArgsInfo(insnList.get(i), argsList, i));
    }
    List<WrapInfo> wrapList = new ArrayList<WrapInfo>();
    for (ArgsInfo argsInfo : argsList) {
        List<RegisterArg> args = argsInfo.getArgs();
        if (args.isEmpty()) {
            continue;
        }
        ListIterator<RegisterArg> it = args.listIterator(args.size());
        while (it.hasPrevious()) {
            RegisterArg arg = it.previous();
            //				if (arg.getName() != null) {
            //					continue;
            //				}
            SSAVar sVar = arg.getSVar();
            // allow inline only one use arg or 'this'
            if (sVar == null || sVar.getVariableUseCount() != 1 && !arg.isThis() || sVar.contains(AFlag.DONT_INLINE)) {
                continue;
            }
            InsnNode assignInsn = sVar.getAssign().getParentInsn();
            if (assignInsn == null || assignInsn.contains(AFlag.DONT_INLINE)) {
                continue;
            }
            int assignPos = insnList.getIndex(assignInsn);
            if (assignPos != -1) {
                WrapInfo wrapInfo = argsInfo.checkInline(assignPos, arg);
                if (wrapInfo != null) {
                    wrapList.add(wrapInfo);
                }
            } else {
                // another block
                BlockNode assignBlock = BlockUtils.getBlockByInsn(mth, assignInsn);
                if (assignBlock != null && assignInsn != arg.getParentInsn() && canMoveBetweenBlocks(assignInsn, assignBlock, block, argsInfo.getInsn())) {
                    inline(arg, assignInsn, assignBlock);
                }
            }
        }
    }
    if (!wrapList.isEmpty()) {
        for (WrapInfo wrapInfo : wrapList) {
            inline(wrapInfo.getArg(), wrapInfo.getInsn(), block);
        }
    }
}