Example usage for org.objectweb.asm.tree AbstractInsnNode getOpcode

Introduction

In this page you can find the example usage for org.objectweb.asm.tree AbstractInsnNode getOpcode.

Prototype

public int getOpcode()

Source Link

Document

Returns the opcode of this instruction.

Usage

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

/**
 * Checks if node is if cmp lt.//from  w w w .j  av  a  2s  . c om
 * 
 * @param node
 *          the node
 * @return true if node is if cmp lt
 */
public static boolean isIfCmpLt(final AbstractInsnNode node) {
    if (node == null) {
        return false;
    }
    return node.getOpcode() == Opcodes.IF_ICMPLT;
}

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

/**
 * Checks if node is daload.//from   ww  w  . ja  v a 2 s .  co  m
 * 
 * @param node
 *          the node
 * @return true if node is daload
 */
public static boolean isDAload(final AbstractInsnNode node) {
    if (node == null) {
        return false;
    }
    return node.getOpcode() == Opcodes.DALOAD;
}

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

/**
 * Checks if node is aaload./*from w ww . ja v  a2s.  co  m*/
 * 
 * @param node
 *          the node
 * @return true if node is a aload
 */
public static boolean isAAload(final AbstractInsnNode node) {
    if (node == null) {
        return false;
    }
    return node.getOpcode() == Opcodes.AALOAD;
}

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

public static Number cast(final Number number, final AbstractInsnNode numberNode,
        final AbstractInsnNode castNode) {
    if (castNode == null) {
        return null;
    }/*from w w  w  . j a  v a  2 s. co  m*/
    if (castNode == numberNode) {
        return number;
    }
    final int opcode = castNode.getOpcode();
    if (opcode == I2B) {
        return (byte) number.intValue();
    }
    // if(opcode==I2C) {
    // return (char)number.intValue();
    // }
    if (opcode == I2L) {
        return (long) number.intValue();
    }
    if (opcode == I2S) {
        return (short) number.intValue();
    }
    if (opcode == I2D) {
        return (double) number.intValue();
    }
    if (opcode == I2F) {
        return (float) number.intValue();
    }
    if (opcode == D2F) {
        return (float) number.doubleValue();
    }
    if (opcode == D2I) {
        return (int) number.doubleValue();
    }
    if (opcode == D2L) {
        return (long) number.doubleValue();
    }
    if (opcode == F2D) {
        return (double) number.floatValue();
    }
    if (opcode == F2I) {
        return (int) number.floatValue();
    }
    if (opcode == F2L) {
        return (long) number.floatValue();
    }
    if (opcode == L2D) {
        return (long) number.longValue();
    }
    if (opcode == L2F) {
        return (float) number.longValue();
    }
    if (opcode == L2I) {
        return (int) number.longValue();
    }

    return number;
}

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

/**
 * Gets the value.//  ww w  .  ja v a 2s  .  c  om
 * 
 * @param node
 *          the node
 * @return the value
 * @throws NotANumberException
 *           if node is not a number-Node
 */
public static Number getNumberValue(final AbstractInsnNode node) throws NotANumberException {
    if (node == null) {
        throw new NotANumberException();
    }
    AbstractInsnNode checkNode = node;
    if (isCast(node)) {
        checkNode = node.getPrevious();
    }
    if (isIconst(checkNode)) {
        return cast(Integer.valueOf(checkNode.getOpcode() - Opcodes.ICONST_0), checkNode, node);
    }
    if (checkNode.getOpcode() == Opcodes.LCONST_0) {
        return cast(Long.valueOf(0), checkNode, node);
    }
    if (checkNode.getOpcode() == Opcodes.LCONST_1) {
        return cast(Long.valueOf(1), checkNode, node);
    }
    if (checkNode.getOpcode() == Opcodes.FCONST_0) {
        return cast(Float.valueOf(0), checkNode, node);
    }
    if (checkNode.getOpcode() == Opcodes.FCONST_1) {
        return cast(Float.valueOf(1), checkNode, node);
    }
    if (checkNode.getOpcode() == Opcodes.FCONST_2) {
        return cast(Float.valueOf(1), checkNode, node);
    }
    if (checkNode.getOpcode() == Opcodes.DCONST_0) {
        return cast(Double.valueOf(0), checkNode, node);
    }
    if (checkNode.getOpcode() == Opcodes.DCONST_1) {
        return cast(Double.valueOf(1), checkNode, node);
    }
    if (checkNode instanceof IntInsnNode) {
        return cast(Integer.valueOf(((IntInsnNode) checkNode).operand), checkNode, node);
    }
    return cast(getConstantValue(checkNode, Number.class), checkNode, node);
}

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

private static <T> T getConstantValue(final AbstractInsnNode node, final Class<T> clazz)
        throws NotANumberException {
    if (node == null) {
        throw new NotANumberException();
    }/*from   w  w  w  .  j  a  v a  2 s  . co  m*/
    if (node.getOpcode() == ACONST_NULL) {
        return null;
    }
    if (!(node instanceof LdcInsnNode)) {
        throw new NotANumberException();
    }
    try {
        final Object value = ((LdcInsnNode) node).cst;
        return clazz.cast(value);
    } catch (final ClassCastException cce) {
        throw new NotANumberException();
    }
}

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

/**
 * Checks if node is astore.//from  www.j ava 2  s  .  c  o  m
 * 
 * @param node
 *          the node
 * @return true if node is astore
 */
public static boolean isAstore(final AbstractInsnNode node) {
    if (node == null) {
        return false;
    }
    return node.getOpcode() == Opcodes.ASTORE;
}

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

/**
 * Checks if node is sipush./*from  ww w .  j  ava 2s . c om*/
 * 
 * @param node
 *          the node
 * @return true if node is sipush
 */
public static boolean isSipush(final AbstractInsnNode node) {
    if (node == null) {
        return false;
    }
    return node.getOpcode() == Opcodes.SIPUSH;
}

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

/**
 * Checks if this is a cast.//w  ww  . j  a v a2 s.  c  o  m
 * <p>
 * i2l 0x85 value  result convert an int into a long<br/>
 * i2f 0x86 value  result convert an int into a float<br/>
 * i2d 0x87 value  result convert an int into a double<br/>
 * l2i 0x88 value  result convert a long to a int<br/>
 * l2f 0x89 value  result convert a long to a float<br/>
 * l2d 0x8a value  result convert a long to a double<br/>
 * f2i 0x8b value  result convert a float to an int<br/>
 * f2l 0x8c value  result convert a float to a long<br/>
 * f2d 0x8d value  result convert a float to a double<br/>
 * d2i 0x8e value  result convert a double to an int<br/>
 * d2l 0x8f value  result convert a double to a long<br/>
 * d2f 0x90 value  result convert a double to a float<br/>
 * i2b 0x91 value  result convert an int into a byte<br/>
 * i2c 0x92 value  result convert an int into a character<br/>
 * i2s 0x93 value  result convert an int into a short
 * 
 * @param numberNode
 *          the number node
 * @return true if numberNode is cast
 */
public static boolean isCast(final AbstractInsnNode numberNode) {
    if (numberNode == null) {
        return false;
    }
    if (numberNode.getOpcode() >= I2L && numberNode.getOpcode() <= I2S) {
        return true;
    }
    return false;
}

From source file:de.tuberlin.uebb.jbop.optimizer.utils.NodeHelper.java

License:Open Source License

/**
 * Returns true if node is an one-param-if-Statement.
 * //from  w  w w .j a va  2  s.co m
 * @param node
 *          the node
 * @return true if node is one value if
 */
public static boolean isOneValueIf(final AbstractInsnNode node) {
    if (node == null) {
        return false;
    }
    if (node.getOpcode() == Opcodes.IFNULL) {
        return true;
    }
    if (node.getOpcode() == Opcodes.IFNONNULL) {
        return true;
    }
    if (node.getOpcode() >= Opcodes.IFEQ && node.getOpcode() <= Opcodes.IFLE) {
        return true;
    }
    return false;
}