public IRubyObject reCache(ThreadContext context, RubyModule target) {
Object newGeneration = invalidator(context).getData();
IRubyObject value = target.getConstantFromNoConstMissing(name, false);
cachedValue = value;
if (value != null) {
generation = newGeneration;
hash = target.hashCode();
}
return value;
}
private Object cache(Ruby runtime, RubyModule module) {
Object constant =
noPrivateConsts
? module.getConstantFromNoConstMissing(constName, false)
: module.getConstantNoConstMissing(constName);
if (constant == null) {
constant = UndefinedValue.UNDEFINED;
} else {
// recache
generation = runtime.getConstantInvalidator(constName).getData();
hash = module.hashCode();
cachedConstant = constant;
}
return constant;
}
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;
}
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;
}