Examples with JumpInsnNode org.objectweb.asm.tree.JumpInsnNode used on opensource projects

Example 41 with JumpInsnNode

use of org.objectweb.asm.tree.JumpInsnNode in project Random-Things by lumien231.

the class ClassTransformer method patchInventoryPlayer.

private byte[] patchInventoryPlayer(byte[] basicClass) {
    ClassNode classNode = new ClassNode();
    ClassReader classReader = new ClassReader(basicClass);
    classReader.accept(classNode, 0);
    logger.log(Level.DEBUG, "Found InventoryPlayer Class: " + classNode.name);
    MethodNode dropAllItems = null;
    for (MethodNode mn : classNode.methods) {
        if (mn.name.equals(MCPNames.method("func_70436_m"))) {
            dropAllItems = mn;
            break;
        }
    }
    if (dropAllItems != null) {
        logger.log(Level.DEBUG, " - Found dropAllItems (1/2)");
        for (int i = 0; i < dropAllItems.instructions.size(); i++) {
            AbstractInsnNode ain = dropAllItems.instructions.get(i);
            if (ain instanceof JumpInsnNode) {
                JumpInsnNode jin = (JumpInsnNode) ain;
                if (jin.getOpcode() == Opcodes.IFNE) {
                    AbstractInsnNode before = dropAllItems.instructions.get(i - 1);
                    if (before instanceof MethodInsnNode && ((MethodInsnNode) before).name.equals(MCPNames.method("func_190926_b"))) {
                        LabelNode l0 = jin.label;
                        InsnList toInsert = new InsnList();
                        toInsert.add(new VarInsnNode(ALOAD, 0));
                        toInsert.add(new VarInsnNode(ILOAD, 3));
                        toInsert.add(new VarInsnNode(ALOAD, 4));
                        toInsert.add(new MethodInsnNode(Opcodes.INVOKESTATIC, asmHandler, "shouldPlayerDrop", "(Lnet/minecraft/entity/player/InventoryPlayer;ILnet/minecraft/item/ItemStack;)Z", false));
                        toInsert.add(new JumpInsnNode(IFEQ, l0));
                        dropAllItems.instructions.insert(jin, toInsert);
                        i += 5;
                        logger.log(Level.DEBUG, " - Patched dropAllItems (2/2)");
                    }
                }
            }
        }
    }
    CustomClassWriter writer = new CustomClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
    classNode.accept(writer);
    return writer.toByteArray();
}

Example 42 with JumpInsnNode

use of org.objectweb.asm.tree.JumpInsnNode in project maple-ir by LLVM-but-worse.

the class Subroutine method merge.

public boolean merge(final Subroutine subroutine) throws AnalyzerException {
    boolean changes = false;
    for (int i = 0; i < access.length; ++i) {
        if (subroutine.access[i] && !access[i]) {
            access[i] = true;
            changes = true;
        }
    }
    if (subroutine.start == start) {
        for (int i = 0; i < subroutine.callers.size(); ++i) {
            JumpInsnNode caller = subroutine.callers.get(i);
            if (!callers.contains(caller)) {
                callers.add(caller);
                changes = true;
            }
        }
    }
    return changes;
}

Example 43 with JumpInsnNode

use of org.objectweb.asm.tree.JumpInsnNode in project maple-ir by LLVM-but-worse.

the class JumpInsnNodeSerializer method deserialize.

@Override
public JumpInsnNode deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
    JsonObject jsonObject = (JsonObject) json;
    int opcode = jsonObject.get("opcode").getAsInt();
    LabelNode labelNode = context.deserialize(jsonObject.get("local"), List.class);
    return new JumpInsnNode(opcode, labelNode);
}

Example 44 with JumpInsnNode

use of org.objectweb.asm.tree.JumpInsnNode in project jphp by jphp-compiler.

the class TryCatchCompiler method write.

@Override
public void write(TryStmtToken token) {
    if (token.getBody() == null || token.getBody().getInstructions().isEmpty()) {
        if (token.getFinally() != null)
            expr.write(BodyStmtToken.class, token.getFinally());
        return;
    }
    expr.writeDefineVariables(token.getLocal());
    LabelNode tryStart = expr.writeLabel(node, token.getMeta().getStartLine());
    LabelNode tryEnd = new LabelNode();
    LabelNode catchStart = new LabelNode();
    LabelNode catchEnd = new LabelNode();
    LabelNode returnLabel = new LabelNode();
    method.node.tryCatchBlocks.add(0, new TryCatchBlockNode(tryStart, tryEnd, catchStart, Type.getInternalName(BaseBaseException.class)));
    if (token.getFinally() != null) {
        method.getTryStack().push(new MethodStmtCompiler.TryCatchItem(token, returnLabel));
    }
    expr.write(BodyStmtToken.class, token.getBody());
    if (token.getFinally() != null) {
        method.getTryStack().pop();
    }
    add(tryEnd);
    add(new JumpInsnNode(GOTO, catchEnd));
    add(catchStart);
    LocalVariable exception = method.addLocalVariable("~catch~" + method.nextStatementIndex(BaseException.class), catchStart, BaseBaseException.class);
    exception.setEndLabel(catchEnd);
    expr.makeVarStore(exception);
    LabelNode nextCatch = null;
    int i = 0, size = token.getCatches().size();
    LocalVariable local = null;
    LabelNode catchFail = new LabelNode();
    for (CatchStmtToken _catch : token.getCatches()) {
        if (nextCatch != null) {
            add(nextCatch);
        }
        if (i == size - 1) {
            nextCatch = catchFail;
        } else {
            nextCatch = new LabelNode();
        }
        local = method.getLocalVariable(_catch.getVariable().getName());
        List<FulledNameToken> catchExceptions = _catch.getExceptions();
        LabelNode bodyLabel = new LabelNode();
        LabelNode nextCatchLocal = new LabelNode();
        int j = 0;
        for (FulledNameToken catchException : catchExceptions) {
            if (j > 0) {
                add(nextCatchLocal);
                nextCatchLocal = new LabelNode();
            }
            expr.writePushEnv();
            expr.writeVarLoad(exception);
            expr.writePushConstString(catchException.toName());
            expr.writePushConstString(catchException.toName().toLowerCase());
            expr.writeSysDynamicCall(Environment.class, "__throwCatch", Memory.class, BaseBaseException.class, String.class, String.class);
            expr.writeVarAssign(local, _catch.getVariable(), true, false);
            expr.writePopBoolean();
            add(new JumpInsnNode(IFEQ, j == catchExceptions.size() - 1 ? nextCatch : nextCatchLocal));
            expr.stackPop();
            if (catchExceptions.size() > 1) {
                add(new JumpInsnNode(GOTO, bodyLabel));
            }
            j++;
        }
        if (catchExceptions.size() > 1) {
            add(bodyLabel);
        }
        expr.write(BodyStmtToken.class, _catch.getBody());
        add(new JumpInsnNode(GOTO, catchEnd));
        i++;
    }
    add(catchFail);
    if (token.getFinally() != null) {
        expr.write(BodyStmtToken.class, token.getFinally());
    }
    /*if (method.getTryStack().empty()) {
            expr.writePushEnv();
            expr.writeVarLoad(exception);
            expr.writeSysDynamicCall(Environment.class, "__throwFailedCatch", void.class, BaseException.class);
        } else {*/
    expr.makeVarLoad(exception);
    add(new InsnNode(ATHROW));
    // }
    add(catchEnd);
    if (token.getFinally() != null) {
        LabelNode skip = new LabelNode();
        add(new JumpInsnNode(GOTO, skip));
        // finally for return
        add(returnLabel);
        expr.write(BodyStmtToken.class, token.getFinally());
        if (method.getTryStack().empty()) {
            // all finally blocks are done
            LocalVariable retVar = method.getOrAddLocalVariable("~result~", null, Memory.class);
            expr.writeVarLoad(retVar);
            add(new InsnNode(ARETURN));
            expr.stackPop();
        } else {
            // goto next finally block
            add(new JumpInsnNode(GOTO, method.getTryStack().peek().getReturnLabel()));
        }
        add(skip);
        // other finally
        expr.write(BodyStmtToken.class, token.getFinally());
    }
    expr.writeUndefineVariables(token.getLocal());
    method.prevStatementIndex(BaseBaseException.class);
}

Example 45 with JumpInsnNode

use of org.objectweb.asm.tree.JumpInsnNode in project jphp by jphp-compiler.

the class StaticDefinitionCompiler method write.

@Override
public void write(StaticStmtToken token) {
    LocalVariable local = method.getLocalVariable(token.getVariable().getName());
    assert local != null;
    LabelNode end = new LabelNode();
    boolean isClosure = method.clazz.isClosure();
    if (isClosure)
        expr.writeVarLoad(LocalVariable.THIS);
    else
        expr.writePushEnv();
    // writePushConstString(name);
    writePushNameForStaticVariable(local);
    expr.writeSysDynamicCall(isClosure ? null : Environment.class, "getStatic", Memory.class, String.class);
    expr.writePushDup();
    add(new JumpInsnNode(IFNONNULL, end));
    expr.stackPop();
    expr.writePopAll(1);
    if (isClosure)
        expr.writeVarLoad(LocalVariable.THIS);
    else
        expr.writePushEnv();
    writePushNameForStaticVariable(local);
    if (token.getInitValue() != null) {
        expr.writeExpression(token.getInitValue(), true, false, true);
    } else {
        expr.writePushNull();
    }
    expr.writePopBoxing(true);
    expr.writeSysDynamicCall(isClosure ? null : Environment.class, "getOrCreateStatic", Memory.class, String.class, Memory.class);
    add(end);
    expr.writeVarStore(local, false, false);
}