private boolean checkHasSubtype() {
boolean subtypeValid;
if (externalType.hasSubType()) {
subtypeValid = externalTypeBinding.getStereotype() != null;
} else {
problemRequestor.acceptProblem(
externalType.getName(),
IProblemRequestor.PART_DEFINITION_REQUIRES_TYPE_CLAUSE,
new String[] {externalType.getName().getCanonicalName()});
subtypeValid = false;
}
return subtypeValid;
}
@Override
public boolean visit(ExternalType externalType) {
this.externalType = externalType;
EGLNameValidator.validate(
externalType.getName(), EGLNameValidator.HANDLER, problemRequestor, compilerOptions);
new AnnotationValidator(problemRequestor, compilerOptions)
.validateAnnotationTarget(externalType);
if (checkHasSubtype()) {
checkExtendedTypes(externalTypeBinding.getStereotype().getEClass());
checkCycles();
}
return true;
}
private void checkCycles() {
for (Name name : externalType.getExtendedTypes()) {
Type type = name.resolveType();
if (type instanceof org.eclipse.edt.mof.egl.ExternalType
&& checkCycles(
(org.eclipse.edt.mof.egl.ExternalType) type,
new HashSet<org.eclipse.edt.mof.egl.ExternalType>())) {
problemRequestor.acceptProblem(
name,
IProblemRequestor.RECURSIVE_LOOP_IN_EXTENDS,
new String[] {externalTypeBinding.getCaseSensitiveName(), name.toString()});
}
}
}
private boolean checkCycles(
org.eclipse.edt.mof.egl.ExternalType externalType,
Set<org.eclipse.edt.mof.egl.ExternalType> seen) {
// Sometimes the binding won't be resolved yet.
externalType = (org.eclipse.edt.mof.egl.ExternalType) BindingUtil.realize(externalType);
if (seen.contains(externalType)) {
return false;
}
if (externalTypeBinding.equals(externalType)) {
return true;
}
seen.add(externalType);
for (StructPart superType : externalType.getSuperTypes()) {
if (superType instanceof org.eclipse.edt.mof.egl.ExternalType) {
if (checkCycles((org.eclipse.edt.mof.egl.ExternalType) superType, seen)) {
return true;
}
}
}
return false;
}
private void checkParameters(List parameters) {
Stereotype subtype = externalTypeBinding.getStereotype();
if (subtype != null) {
// do not validate the parms for NativeType
EClass clazz = subtype.getEClass();
if (clazz != null
&& NameUtile.equals(
clazz.getName(), NameUtile.getAsName(IEGLConstants.PROPERTY_NATIVETYPE))
&& NameUtile.equals(clazz.getPackageName(), NameUtile.getAsName("eglx.lang"))) {
return;
}
}
for (Iterator iter = parameters.iterator(); iter.hasNext(); ) {
FunctionParameter parm = (FunctionParameter) iter.next();
if (parm.isParmConst()) {
problemRequestor.acceptProblem(
parm,
IProblemRequestor.EXTERNALTYPE_PARM_CANNOT_BE_CONST,
new String[] {parm.getName().getCanonicalName()});
}
}
}