Java Code Examples for org.objectweb.asm.MethodVisitor#visitLookupSwitchInsn()

The following examples show how to use org.objectweb.asm.MethodVisitor#visitLookupSwitchInsn() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SwitchStmt.java    From maple-ir with GNU General Public License v3.0 6 votes vote down vote up 
@Override
public void toCode(MethodVisitor visitor, BytecodeFrontend assembler) {
	if (needsSort()) {
		sort();
	}

	int[] cases = new int[targets.size()];
	Label[] labels = new Label[targets.size()];
	int j = 0;
	for (Entry<Integer, BasicBlock> e : targets.entrySet()) {
		cases[j] = e.getKey();
		labels[j++] = assembler.getLabel(e.getValue());
	}

	expression.toCode(visitor, assembler);
	int[] cast = TypeUtils.getPrimitiveCastOpcodes(expression.getType(), Type.INT_TYPE); // widen
	for (int i = 0; i < cast.length; i++) {
		visitor.visitInsn(cast[i]);
	}
	boolean fitsIntoTable = fitsIntoTableSwitch();
	if (fitsIntoTable) {
		visitor.visitTableSwitchInsn(cases[0], cases[cases.length - 1], assembler.getLabel(defaultTarget), labels);
	} else {
		visitor.visitLookupSwitchInsn(assembler.getLabel(defaultTarget), cases, labels);
	}
}
Example 2
Source File: LookupSwitchInsnNode.java    From Cafebabe with GNU General Public License v3.0 5 votes vote down vote up 
@Override
public void accept(final MethodVisitor methodVisitor) {
	int[] keysArray = new int[this.keys.size()];
	for (int i = 0, n = keysArray.length; i < n; ++i) {
		keysArray[i] = this.keys.get(i).intValue();
	}
	Label[] labelsArray = new Label[this.labels.size()];
	for (int i = 0, n = labelsArray.length; i < n; ++i) {
		labelsArray[i] = this.labels.get(i).getLabel();
	}
	methodVisitor.visitLookupSwitchInsn(dflt.getLabel(), keysArray, labelsArray);
	acceptAnnotations(methodVisitor);
}
Example 3
Source File: LookupSwitchInsnNode.java    From Concurnas with MIT License 5 votes vote down vote up 
@Override
public void accept(final MethodVisitor methodVisitor) {
  int[] keysArray = new int[this.keys.size()];
  for (int i = 0, n = keysArray.length; i < n; ++i) {
    keysArray[i] = this.keys.get(i).intValue();
  }
  Label[] labelsArray = new Label[this.labels.size()];
  for (int i = 0, n = labelsArray.length; i < n; ++i) {
    labelsArray[i] = this.labels.get(i).getLabel();
  }
  methodVisitor.visitLookupSwitchInsn(dflt.getLabel(), keysArray, labelsArray);
  acceptAnnotations(methodVisitor);
}
Example 4
Source File: LookupSwitchInsnNode.java    From JByteMod-Beta with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public void accept(final MethodVisitor mv) {
  int[] keys = new int[this.keys.size()];
  for (int i = 0; i < keys.length; ++i) {
    keys[i] = this.keys.get(i).intValue();
  }
  Label[] labels = new Label[this.labels.size()];
  for (int i = 0; i < labels.length; ++i) {
    labels[i] = this.labels.get(i).getLabel();
  }
  mv.visitLookupSwitchInsn(dflt.getLabel(), keys, labels);
  acceptAnnotations(mv);
}
Example 5
Source File: CodeEmitter.java    From yql-plus with Apache License 2.0 5 votes vote down vote up 
public void emitIntegerSwitch(Map<Integer, Label> labels, Label defaultCase) {
    // TODO: we should see if the labels are dense, and if so use TABLESWITCH
    MethodVisitor mv = getMethodVisitor();
    List<Integer> codes = Lists.newArrayList(labels.keySet());
    Collections.sort(codes);
    int[] k = new int[codes.size()];
    Label[] kl = new Label[codes.size()];
    for (int i = 0; i < k.length; ++i) {
        k[i] = codes.get(i);
        kl[i] = labels.get(i);
    }
    mv.visitLookupSwitchInsn(defaultCase, k, kl);
    mv.visitJumpInsn(GOTO, defaultCase);
}
Example 6
Source File: CodeEmitter.java    From yql-plus with Apache License 2.0 5 votes vote down vote up 
public void emitStringSwitch(Map<String, Label> labels, Label defaultCase, boolean caseInsensitive) {
    MethodVisitor mv = getMethodVisitor();
    if (caseInsensitive) {
        mv.visitFieldInsn(GETSTATIC, "java/util/Locale", "ENGLISH", "Ljava/util/Locale;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "toUpperCase", "(Ljava/util/Locale;)Ljava/lang/String;", false);
    }
    mv.visitInsn(DUP);
    AssignableValue tmp = allocate(String.class);
    tmp.write(BaseTypeAdapter.STRING).generate(this);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "hashCode", "()I", false);
    Multimap<Integer, SwitchLabel> keys = ArrayListMultimap.create();
    for (Map.Entry<String, Label> e : labels.entrySet()) {
        String name = e.getKey();
        if (caseInsensitive) {
            name = name.toUpperCase(Locale.ENGLISH);
        }
        keys.put(name.hashCode(), new SwitchLabel(name, e.getValue()));
    }
    List<Integer> codes = Lists.newArrayList(keys.keySet());
    Collections.sort(codes);
    int[] k = new int[codes.size()];
    Label[] kl = new Label[codes.size()];
    for (int i = 0; i < k.length; ++i) {
        k[i] = codes.get(i);
        kl[i] = new Label();
    }
    mv.visitLookupSwitchInsn(defaultCase, k, kl);
    for (int i = 0; i < k.length; ++i) {
        mv.visitLabel(kl[i]);
        for (SwitchLabel switchLabel : keys.get(k[i])) {
            mv.visitLdcInsn(switchLabel.name);
            tmp.read().generate(this);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "equals", "(Ljava/lang/Object;)Z", false);
            mv.visitJumpInsn(IFNE, switchLabel.label);
        }
        mv.visitJumpInsn(GOTO, defaultCase);
    }
}
Example 7
Source File: LookupSwitchInsnNode.java    From JReFrameworker with MIT License 5 votes vote down vote up 
@Override
public void accept(final MethodVisitor methodVisitor) {
  int[] keysArray = new int[this.keys.size()];
  for (int i = 0, n = keysArray.length; i < n; ++i) {
    keysArray[i] = this.keys.get(i).intValue();
  }
  Label[] labelsArray = new Label[this.labels.size()];
  for (int i = 0, n = labelsArray.length; i < n; ++i) {
    labelsArray[i] = this.labels.get(i).getLabel();
  }
  methodVisitor.visitLookupSwitchInsn(dflt.getLabel(), keysArray, labelsArray);
  acceptAnnotations(methodVisitor);
}
Example 8
Source File: LookupSwitchInsnNode.java    From JReFrameworker with MIT License 5 votes vote down vote up 
@Override
public void accept(final MethodVisitor methodVisitor) {
  int[] keysArray = new int[this.keys.size()];
  for (int i = 0, n = keysArray.length; i < n; ++i) {
    keysArray[i] = this.keys.get(i).intValue();
  }
  Label[] labelsArray = new Label[this.labels.size()];
  for (int i = 0, n = labelsArray.length; i < n; ++i) {
    labelsArray[i] = this.labels.get(i).getLabel();
  }
  methodVisitor.visitLookupSwitchInsn(dflt.getLabel(), keysArray, labelsArray);
  acceptAnnotations(methodVisitor);
}
Example 9
Source File: LookupSwitch.java    From OSRS-Deobfuscator with BSD 2-Clause "Simplified" License 4 votes vote down vote up 
@Override
public void accept(MethodVisitor visitor)
{
	visitor.visitLookupSwitchInsn(defi.getLabel(), match,
		branchi.stream().map(l -> l.getLabel()).toArray(org.objectweb.asm.Label[]::new));
}