Collection<JMethod> extractMethods(
TreeLogger logger, SourceBuilder<ModelMagic> sb, GeneratorContext ctx, JClassType type)
throws UnableToCompleteException {
assert type.isInterface() != null;
ModelMagic models = sb.getPayload();
Map<String, JMethod> uniqueMethods = new LinkedHashMap<String, JMethod>();
JMethod[] existing = type.getInheritableMethods();
Set<? extends JClassType> hierarchy = type.getFlattenedSupertypeHierarchy();
if (ModelGeneratorGwt.allAbstract(existing)) {
// still an interface; grab our root type.
existing = models.getRootType(logger, ctx).getInheritableMethods();
}
for (JMethod method : existing) {
if (!method.isAbstract())
uniqueMethods.put(xapi.dev.model.ModelGeneratorGwt.toSignature(method), method);
}
boolean debug = logger.isLoggable(Type.DEBUG);
for (JClassType next : hierarchy) {
if (next.isInterface() != null) {
sb.getClassBuffer().addInterfaces(next.getQualifiedSourceName());
for (JMethod method : next.getMethods()) {
String sig = ModelGeneratorGwt.toSignature(method);
if (!uniqueMethods.containsKey(sig)) uniqueMethods.put(sig, method);
}
} else {
for (JMethod method : next.getMethods()) {
String sig = ModelGeneratorGwt.toSignature(method);
if (uniqueMethods.containsKey(sig)) {
if (debug)
logger.log(
Type.WARN,
"Found multiple model methods for "
+ type.getName()
+ "::"
+ sig
+ "; preferring method from "
+ uniqueMethods.get(sig).getEnclosingType().getName());
} else {
uniqueMethods.put(sig, method);
}
}
}
}
return uniqueMethods.values();
}
public void build(
TreeLogger logger, SourceBuilder<ModelMagic> builder, GeneratorContext ctx, JClassType type)
throws UnableToCompleteException {
ModelMagic models = builder.getPayload();
ModelGenerator generator = new ModelGenerator(builder);
// Step one; determine if we already have a concrete type or not.
// TODO if JClassType is final, we need to wrap it using a delegate model.
JClassType concrete;
// ClassBuffer cb = builder.getClassBuffer();
JClassType root = models.getRootType(logger, ctx);
if (type.isInterface() == null && type != root) {
concrete = type;
generator.setSuperClass(type.getQualifiedSourceName());
} else {
// We have an interface on our hands; search for an existing or
// buildable model.
// search for a supertype to inherit. Anything that extends Model,
// does not implement any method we do implement, preferred type
// being the one that implements the most interfaces possible
final JClassType model;
try {
model = ctx.getTypeOracle().getType(Model.class.getName());
} catch (NotFoundException e) {
logger.log(
Type.ERROR,
"Cannot load "
+ Model.class.getName()
+ "; "
+ "make sure you have xapi-gwt-model:sources.jar on classpath.");
throw new UnableToCompleteException();
}
concrete = model;
for (JClassType supertype : concrete.getFlattenedSupertypeHierarchy()) {
// Only interfaces explicitly extending Model become concrete.
if (ModelGeneratorGwt.canBeSupertype(type, supertype)) {
// prefer the concrete type with the most methods in common.
concrete = supertype;
}
}
if (concrete == null || concrete == model) {
concrete = models.getRootType(logger, ctx);
generator.setSuperClass(concrete.getQualifiedSourceName());
} else {
// We have to make sure this concrete supertype is created.
if (!models.hasModel(concrete.getQualifiedSourceName())) {
// Concrete type is not cached. Build it now.
RebindResult result =
ModelGeneratorGwt.execImpl(logger, ctx, concrete.getQualifiedSourceName());
generator.setSuperClass(result.getResultTypeName());
}
}
}
// This will probably become jsni, if we can avoid jso interface sickness...
generator.createFactory(type.getQualifiedSourceName());
HasModelFields fieldMap = new HasModelFields();
fieldMap.setDefaultSerializable(type.getAnnotation(Serializable.class));
for (JMethod method : methods.keySet()) {
if (!toGenerate.contains(ModelGeneratorGwt.toSignature(method))) {
logger.log(
Type.TRACE, "Skipping method defined in supertype: " + method.getJsniSignature());
continue;
}
Annotation[] annos = methods.get(method);
String methodName = method.getName();
String returnType = method.getReturnType().getQualifiedSourceName();
String params = ModelGeneratorGwt.typeToParameterString(method.getParameterTypes());
// TODO: check imports if we are safe to use simple name.
returnType = method.getReturnType().getSimpleSourceName();
IsType returns = X_Source.binaryToSource(method.getReturnType().getQualifiedBinaryName());
IsType[] parameters = ModelGeneratorGwt.toTypes(method.getParameterTypes());
GetterFor getter = method.getAnnotation(GetterFor.class);
if (getter != null) {
String name = getter.value();
if (name.length() == 0) {
name = ModelUtil.stripGetter(method.getName());
}
ModelField field = fieldMap.getOrMakeField(name);
field.setType(returnType);
assert parameters.length == 0
: "A getter method cannot have parameters. "
+ "Generated code requires using getter methods without args. You provided "
+ method.getJsniSignature();
grabAnnotations(logger, models, fieldMap, method, annos, type);
field.addGetter(returns, methodName);
continue;
}
SetterFor setter = method.getAnnotation(SetterFor.class);
if (setter != null) {
String name = setter.value();
if (name.length() == 0) name = ModelUtil.stripSetter(method.getName());
grabAnnotations(logger, models, fieldMap, method, annos, type);
continue;
}
if (method.getAnnotation(DeleterFor.class) != null) {
implementAction(logger, generator, method, models, annos);
continue;
}
// No annotation. We have to guess the type.
boolean isVoid = method.getReturnType().isPrimitive() == JPrimitiveType.VOID;
boolean isGetter =
methodName.startsWith("get")
|| methodName.startsWith("is")
|| methodName.startsWith("has");
boolean isSetter, isAction;
if (isGetter) {
assert !isVoid
: "Cannot have a void return type with method name "
+ methodName
+ "; getter prefixes get(), is() and has() must return a type.";
isSetter = false;
isAction = false;
} else {
isSetter =
methodName.startsWith("set")
|| methodName.startsWith("add")
|| methodName.startsWith("put")
|| methodName.startsWith("rem")
|| methodName.startsWith("remove");
if (isSetter) {
isAction = false;
} else {
isAction = true;
}
}
if (isVoid) {
// definitely a setter / action method.
if (isSetter) {
MethodBuffer mb = generator.createMethod(returnType, methodName, params);
implementSetter(logger, mb, method, models, fieldMap, annos);
} else if (isAction) {
implementAction(logger, generator, method, models, annos);
} else {
MethodBuffer mb = generator.createMethod(returnType, methodName, params);
implementException(logger, mb, method);
}
} else {
if (isGetter) {
String name = ModelUtil.stripGetter(method.getName());
ModelField field = fieldMap.getOrMakeField(name);
field.setType(returnType);
field.addGetter(returns, methodName);
grabAnnotations(logger, models, fieldMap, method, annos, type);
} else if (isSetter) {
MethodBuffer mb = generator.createMethod(returnType, methodName, params);
implementSetter(logger, mb, method, models, fieldMap, annos);
} else if (isAction) {
implementAction(logger, generator, method, models, annos);
} else {
MethodBuffer mb = generator.createMethod(returnType, methodName, params);
implementException(logger, mb, method);
}
}
}
generator.generateModel(
X_Source.toType(builder.getPackage(), builder.getClassBuffer().getSimpleName()), fieldMap);
}