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

The following examples show how to use org.apache.bcel.Const#ILOAD . 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

6 votes

/**
 * Returns the type associated with the instruction -
 * in case of ALOAD or ASTORE Type.OBJECT is returned.
 * This is just a bit incorrect, because ALOAD and ASTORE
 * may work on every ReferenceType (including Type.NULL) and
 * ASTORE may even work on a ReturnaddressType .
 * @return type associated with the instruction
 */
@Override
public Type getType( final ConstantPoolGen cp ) {
    switch (canonTag) {
        case Const.ILOAD:
        case Const.ISTORE:
            return Type.INT;
        case Const.LLOAD:
        case Const.LSTORE:
            return Type.LONG;
        case Const.DLOAD:
        case Const.DSTORE:
            return Type.DOUBLE;
        case Const.FLOAD:
        case Const.FSTORE:
            return Type.FLOAT;
        case Const.ALOAD:
        case Const.ASTORE:
            return Type.OBJECT;
        default:
            throw new ClassGenException("Unknown case in switch" + canonTag);
    }
}

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;
    }
}