Example #1
0
  public static IRubyObject inheritanceSearchConst(
      ThreadContext context,
      IRubyObject cmVal,
      MutableCallSite site,
      String constName,
      boolean noPrivateConsts)
      throws Throwable {
    Ruby runtime = context.runtime;
    RubyModule module;

    if (cmVal instanceof RubyModule) {
      module = (RubyModule) cmVal;
    } else {
      throw runtime.newTypeError(cmVal + " is not a type/class");
    }

    IRubyObject constant =
        noPrivateConsts
            ? module.getConstantFromNoConstMissing(constName, false)
            : module.getConstantNoConstMissing(constName);

    if (constant == null) {
      constant = UndefinedValue.UNDEFINED;
    }

    SwitchPoint switchPoint = (SwitchPoint) runtime.getConstantInvalidator(constName).getData();

    // bind constant until invalidated
    MethodHandle target = Binder.from(site.type()).drop(0, 2).constant(constant);
    MethodHandle fallback =
        Binder.from(site.type())
            .append(site, constName)
            .append(noPrivateConsts)
            .invokeStatic(LOOKUP, Bootstrap.class, "inheritanceSearchConst");

    // test that module is same as before
    MethodHandle test =
        Binder.from(site.type().changeReturnType(boolean.class))
            .drop(0, 1)
            .insert(1, module.id)
            .invokeStaticQuiet(LOOKUP, Bootstrap.class, "testArg0ModuleMatch");
    target = guardWithTest(test, target, fallback);
    site.setTarget(switchPoint.guardWithTest(target, fallback));

    return constant;
  }
Example #2
0
  public static IRubyObject searchConst(
      ThreadContext context,
      StaticScope staticScope,
      MutableCallSite site,
      String constName,
      boolean noPrivateConsts)
      throws Throwable {

    // Lexical lookup
    Ruby runtime = context.getRuntime();
    RubyModule object = runtime.getObject();
    IRubyObject constant =
        (staticScope == null)
            ? object.getConstant(constName)
            : staticScope.getConstantInner(constName);

    // Inheritance lookup
    RubyModule module = null;
    if (constant == null) {
      // SSS FIXME: Is this null check case correct?
      module = staticScope == null ? object : staticScope.getModule();
      constant =
          noPrivateConsts
              ? module.getConstantFromNoConstMissing(constName, false)
              : module.getConstantNoConstMissing(constName);
    }

    // Call const_missing or cache
    if (constant == null) {
      return module.callMethod(context, "const_missing", context.runtime.fastNewSymbol(constName));
    }

    SwitchPoint switchPoint = (SwitchPoint) runtime.getConstantInvalidator(constName).getData();

    // bind constant until invalidated
    MethodHandle target = Binder.from(site.type()).drop(0, 2).constant(constant);
    MethodHandle fallback =
        Binder.from(site.type())
            .append(site, constName)
            .append(noPrivateConsts)
            .invokeStatic(LOOKUP, Bootstrap.class, "searchConst");

    site.setTarget(switchPoint.guardWithTest(target, fallback));

    return constant;
  }