Examples with NOP org.objectweb.asm.Opcodes.NOP used on opensource projects

Example 1 with NOP

use of org.objectweb.asm.Opcodes.NOP in project sonar-java by SonarSource.

the class BytecodeCFGBuilderTest method all_opcodes_should_be_visited.

@Test
public void all_opcodes_should_be_visited() throws Exception {
    Instructions ins = new Instructions();
    Predicate<Integer> filterReturnAndThrow = opcode -> !((Opcodes.IRETURN <= opcode && opcode <= Opcodes.RETURN) || opcode == Opcodes.ATHROW);
    NO_OPERAND_INSN.stream().filter(filterReturnAndThrow).forEach(ins::visitInsn);
    INT_INSN.forEach(i -> ins.visitIntInsn(i, 0));
    VAR_INSN.forEach(i -> ins.visitVarInsn(i, 0));
    TYPE_INSN.forEach(i -> ins.visitTypeInsn(i, "java/lang/Object"));
    FIELD_INSN.forEach(i -> ins.visitFieldInsn(i, "java/lang/Object", "foo", "D(D)"));
    METHOD_INSN.forEach(i -> ins.visitMethodInsn(i, "java/lang/Object", "foo", "()V", i == INVOKEINTERFACE));
    JUMP_INSN.forEach(i -> {
        Label jumpLabel = new Label();
        ins.visitJumpInsn(i, jumpLabel);
        ins.visitLabel(jumpLabel);
    });
    ins.visitLdcInsn("a");
    ins.visitIincInsn(0, 1);
    Handle handle = new Handle(H_INVOKESTATIC, "", "", "()V", false);
    ins.visitInvokeDynamicInsn("sleep", "()V", handle);
    ins.visitLookupSwitchInsn(new Label(), new int[] {}, new Label[] {});
    ins.visitMultiANewArrayInsn("B", 1);
    Label l0 = new Label();
    Label dflt = new Label();
    Label case0 = new Label();
    ins.visitTableSwitchInsn(0, 1, dflt, case0);
    ins.visitLabel(dflt);
    ins.visitInsn(NOP);
    ins.visitLabel(l0);
    ins.visitInsn(NOP);
    BytecodeCFG cfg = ins.cfg();
    Multiset<String> cfgOpcodes = cfgOpcodes(cfg);
    List<String> collect = Instructions.ASM_OPCODES.stream().filter(filterReturnAndThrow).map(op -> Printer.OPCODES[op]).collect(Collectors.toList());
    assertThat(cfgOpcodes).containsAll(collect);
}