Java 类com.sun.org.apache.bcel.internal.generic.Select 实例源码

private void updateBranchTargets() {
    for (final BranchInstruction bi : branches) {
        final BranchHandle bh = (BranchHandle) branch_map.get(bi);
        final int pos = bh.getPosition();
        final String name = bi.getName() + "_" + pos;
        int t_pos = bh.getTarget().getPosition();
        _out.println("    " + name + ".setTarget(ih_" + t_pos + ");");
        if (bi instanceof Select) {
            final InstructionHandle[] ihs = ((Select) bi).getTargets();
            for (int j = 0; j < ihs.length; j++) {
                t_pos = ihs[j].getPosition();
                _out.println("    " + name + ".setTarget(" + j + ", ih_" + t_pos + ");");
            }
        }
    }
}

@Override
public void visitBranchInstruction( final BranchInstruction bi ) {
    final BranchHandle bh = (BranchHandle) branch_map.get(bi);
    final int pos = bh.getPosition();
    final String name = bi.getName() + "_" + pos;
    if (bi instanceof Select) {
        final Select s = (Select) bi;
        branches.add(bi);
        final StringBuilder args = new StringBuilder("new int[] { ");
        final int[] matchs = s.getMatchs();
        for (int i = 0; i < matchs.length; i++) {
            args.append(matchs[i]);
            if (i < matchs.length - 1) {
                args.append(", ");
            }
        }
        args.append(" }");
        _out.print("Select " + name + " = new " + bi.getName().toUpperCase(Locale.ENGLISH)
                + "(" + args + ", new InstructionHandle[] { ");
        for (int i = 0; i < matchs.length; i++) {
            _out.print("null");
            if (i < matchs.length - 1) {
                _out.print(", ");
            }
        }
        _out.println(" }, null);");
    } else {
        final int t_pos = bh.getTarget().getPosition();
        String target;
        if (pos > t_pos) {
            target = "ih_" + t_pos;
        } else {
            branches.add(bi);
            target = "null";
        }
        _out.println("    BranchInstruction " + name + " = _factory.createBranchInstruction("
                + CONSTANT_PREFIX + bi.getName().toUpperCase(Locale.ENGLISH) + ", " + target
                + ");");
    }
    if (bh.hasTargeters()) {
        _out.println("    ih_" + pos + " = il.append(" + name + ");");
    } else {
        _out.println("    il.append(" + name + ");");
    }
}