@Override
public Statement getBeanInstance(final InjectableInstance injectableInstance) {
final MetaClass type;
final MetaParameterizedType pType;
switch (injectableInstance.getTaskType()) {
case Type:
return null;
case PrivateField:
case Field:
final MetaField field = injectableInstance.getField();
type = field.getType();
pType = type.getParameterizedType();
break;
case Parameter:
final MetaParameter parm = injectableInstance.getParm();
type = parm.getType();
pType = type.getParameterizedType();
break;
default:
throw new RuntimeException("illegal task type: " + injectableInstance.getEnclosingType());
}
final MetaType[] typeArgs = pType.getTypeParameters();
final MetaClass[] typeArgsClasses = new MetaClass[typeArgs.length];
for (int i = 0; i < typeArgs.length; i++) {
final MetaType argType = typeArgs[i];
if (argType instanceof MetaClass) {
typeArgsClasses[i] = (MetaClass) argType;
} else if (argType instanceof MetaParameterizedType) {
typeArgsClasses[i] = (MetaClass) ((MetaParameterizedType) argType).getRawType();
}
}
final Annotation[] qualifiers = injectableInstance.getQualifiers();
final BlockBuilder<?> block =
injectableInstance.getInjectionContext().getProcessingContext().getBlockBuilder();
final MetaClass providerCreationalCallback =
MetaClassFactory.parameterizedAs(
CreationalCallback.class,
MetaClassFactory.typeParametersOf(providerInjector.getInjectedType()));
final String varName =
InjectUtil.getVarNameFromType(
providerInjector.getConcreteInjectedType(), injectableInstance);
final Statement valueRef;
if (providerInjector.isSingleton() && providerInjector.isRendered()) {
valueRef =
Stmt.loadVariable("beanInstance")
.invoke("provide", typeArgsClasses, qualifiers.length != 0 ? qualifiers : null);
} else {
valueRef = Stmt.load(null);
}
block.append(
Stmt.declareFinalVariable(
varName,
providerCreationalCallback,
Stmt.newObject(providerCreationalCallback)
.extend()
.publicOverridesMethod(
"callback", Parameter.of(providerInjector.getInjectedType(), "beanInstance"))
.append(
Stmt.loadVariable(InjectUtil.getVarNameFromType(type, injectableInstance))
.invoke("callback", valueRef))
.append(Stmt.loadVariable("async").invoke("finish", Refs.get("this")))
.finish()
.publicOverridesMethod("toString")
.append(
Stmt.load(providerInjector.getInjectedType()).invoke("getName").returnValue())
.finish()
.finish()));
block.append(Stmt.loadVariable("async").invoke("wait", Refs.get(varName)));
block.append(
Stmt.loadVariable(providerInjector.getCreationalCallbackVarName())
.invoke("getInstance", Refs.get(varName), Refs.get("context")));
return null;
}
@Override
public void renderProvider(InjectableInstance injectableInstance) {
providerInjector.renderProvider(injectableInstance);
}
