Java Code Examples for org.apache.bcel.Const#ILOAD_0

The following examples show how to use org.apache.bcel.Const#ILOAD_0 . 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: LocalVariableInstruction.java From commons-bcel with Apache License 2.0

6 votes

/**
 * Read needed data (e.g. index) from file.
 * <pre>
 * (ILOAD &lt;= tag &lt;= ALOAD_3) || (ISTORE &lt;= tag &lt;= ASTORE_3)
 * </pre>
 */
@Override
protected void initFromFile( final ByteSequence bytes, final boolean wide ) throws IOException {
    if (wide) {
        n = bytes.readUnsignedShort();
        super.setLength(4);
    } else {
        final short _opcode = super.getOpcode();
        if (((_opcode >= Const.ILOAD) && (_opcode <= Const.ALOAD))
         || ((_opcode >= Const.ISTORE) && (_opcode <= Const.ASTORE))) {
            n = bytes.readUnsignedByte();
            super.setLength(2);
        } else if (_opcode <= Const.ALOAD_3) { // compact load instruction such as ILOAD_2
            n = (_opcode - Const.ILOAD_0) % 4;
            super.setLength(1);
        } else { // Assert ISTORE_0 <= tag <= ASTORE_3
            n = (_opcode - Const.ISTORE_0) % 4;
            super.setLength(1);
        }
    }
}

Example 2

Source File: LocalVariableInstruction.java From commons-bcel with Apache License 2.0

5 votes

/**
 * Long output format:
 *
 * &lt;name of opcode&gt; "["&lt;opcode number&gt;"]"
 * "("&lt;length of instruction&gt;")" "&lt;"&lt; local variable index&gt;"&gt;"
 *
 * @param verbose long/short format switch
 * @return mnemonic for instruction
 */
@Override
public String toString( final boolean verbose ) {
    final short _opcode = super.getOpcode();
    if (((_opcode >= Const.ILOAD_0) && (_opcode <= Const.ALOAD_3))
     || ((_opcode >= Const.ISTORE_0) && (_opcode <= Const.ASTORE_3))) {
        return super.toString(verbose);
    }
    return super.toString(verbose) + " " + n;
}

Example 3

Source File: FindNonShortCircuit.java From spotbugs with GNU Lesser General Public License v2.1

4 votes

private void scanForBooleanValue(int seen) {
    switch (seen) {

    case Const.IAND:
    case Const.IOR:
        switch (prevOpcode) {
        case Const.ILOAD:
        case Const.ILOAD_0:
        case Const.ILOAD_1:
        case Const.ILOAD_2:
        case Const.ILOAD_3:
            clearAll();
            break;
        default:
            break;
        }
        break;
    case Const.ICONST_1:
        stage1 = 1;
        switch (prevOpcode) {
        case Const.IFNONNULL:
        case Const.IFNULL:
            sawNullTest = true;
            break;
        case Const.IF_ICMPGT:
        case Const.IF_ICMPGE:
        case Const.IF_ICMPLT:
        case Const.IF_ICMPLE:
            sawNumericTest = true;
            break;
        }

        break;
    case Const.GOTO:
        if (stage1 == 1) {
            stage1 = 2;
        } else {
            stage1 = 0;
            clearAll();
        }
        break;
    case Const.ICONST_0:
        if (stage1 == 2) {
            sawBooleanValue();
        }
        stage1 = 0;
        break;
    case Const.INVOKEINTERFACE:
    case Const.INVOKEVIRTUAL:
    case Const.INVOKESPECIAL:
    case Const.INVOKESTATIC:
        String sig = getSigConstantOperand();
        if (sig.endsWith(")Z")) {
            sawBooleanValue();
        }
        stage1 = 0;
        break;
    default:
        stage1 = 0;
    }
}