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Re: [pdt-dev] Extending PDT: type inference questions
|
hi,
if you only want to content assist for ClassRegistry::init(B)-> you could follow
http://wiki.eclipse.org/Extending_PDT_2.2#Code_assist_strategies then call context via
getStatementText() and parse this text manually in class XYZCompletionStrategy(extends ClassMembersStrategy),instead of call context.getLhsTypes().
for example you could use the following code in XYZCompletionStrategy#apply:
public void apply(ICompletionReporter reporter) throws BadLocationException {
ICompletionContext context = getContext();
if (!(context instanceof ClassMemberContext)) {
return;
}
ClassMemberContext concreteContext = (ClassMemberContext) context;
CompletionRequestor requestor = concreteContext
.getCompletionRequestor();
String prefix = concreteContext.getPrefix();
boolean isParentCall = isParentCall(concreteContext);
String suffix = getSuffix(concreteContext);
SourceRange replaceRange = null;
if (suffix.equals("")) {
replaceRange = getReplacementRange(concreteContext);
} else {
replaceRange = getReplacementRangeWithBraces(concreteContext);
}
PHPVersion phpVersion = concreteContext.getPhpVersion();
Set<String> magicMethods = new HashSet<String>();
magicMethods.addAll(Arrays.asList(PHPMagicMethods
.getMethods(phpVersion)));
boolean exactName = requestor.isContextInformationMode();
List<IMethod> result = new LinkedList<IMethod>();
ISourceModuleContext sourceModuleContext = new FileContext(
concreteContext.getSourceModule(),
SourceParserUtil.getModuleDeclaration(concreteContext
.getSourceModule()));
String textSequence = concreteContext.getStatementText().toString();
if (textSequence.indexOf("ClassRegistry::init(") >= 0) {
textSequence = textSequence.substring(textSequence
.indexOf("ClassRegistry::init(")
+ "ClassRegistry::init(".length());
textSequence = textSequence.substring(0, textSequence
.lastIndexOf(")->"));
String className = textSequence.substring(1,
textSequence.length() - 1);
IType[] types = PHPTypeInferenceUtils.getModelElements(
new PHPClassType(className), sourceModuleContext,
concreteContext.getOffset());
for (IType type : types) {
try {
ITypeHierarchy hierarchy = getCompanion()
.getSuperTypeHierarchy(type, null);
IMethod[] methods = isParentCall ? PHPModelUtils
.getSuperTypeHierarchyMethod(type, hierarchy,
prefix, exactName, null) : PHPModelUtils
.getTypeHierarchyMethod(type, hierarchy, prefix,
exactName, null);
boolean inConstructor = isInConstructor(type, type
.getMethods(), concreteContext);
for (IMethod method : removeOverriddenElements(Arrays
.asList(methods))) {
if ((!isConstructor(method) || inConstructor
&& isSuperConstructor(method, type,
concreteContext))
&& !isFiltered(method, type, concreteContext)) {
if (magicMethods.contains(method.getElementName())) {
reporter.reportMethod(method, suffix,
replaceRange,
ProposalExtraInfo.MAGIC_METHOD);
} else {
result.add(method);
}
}
}
} catch (CoreException e) {
PHPCorePlugin.log(e);
}
}
for (IMethod method : result) {
reporter.reportMethod((IMethod) method, suffix, replaceRange);
}
}
}
of course the above code is just an example,you need make some changes
to make ctrl+click and hover on method bbb(ClassRegistry::init('B')->bbb()) work,you still need class XYZGoalEvaluatorFactory.
Hope this works for you:)
On Fri, Dec 31, 2010 at 10:41 PM, Kooper
<victor.kupriyanov@xxxxxxxxx> wrote:
Hello,
It is really simple - here it is:
<?php
class ClassRegistry {
public static function init($classname) {
$a = new $classname();
if ($a) {
return $a;
}
return null;
}
}
class A {
public function aaa() { echo "A"; }
}
class B {
public function bbb() { echo "B"; }
}
ClassRegistry::init(B)->
I'm not using quotes around class name in method call currently (it is
because of quotes are included in value of classname in GoalEvaluator
- just didn't handle this yet)
--
Victor Kupriyanov
On Thu, Dec 30, 2010 at 4:00 PM, Roy Ganor <
roy@xxxxxxxx> wrote:
> Hi Victor,
>
> Can you provide a code snippet of your ClassRegistry class? Including the "init" static method.
>
> Thanks,
> Roy
> -----Original Message-----
> From:
pdt-dev-bounces@xxxxxxxxxxx [mailto:
pdt-dev-bounces@xxxxxxxxxxx] On Behalf Of Kooper
> Sent: Wednesday, December 29, 2010 12:55 PM
> To:
pdt-dev@xxxxxxxxxxx
> Subject: [pdt-dev] Extending PDT: type inference questions
>
> Hello,
>
> I'm trying to write a custom extension to PDT 2.2 that adds code assistance for
> object instantiation for particular framework. I'm following the guidelines at
>
http://wiki.eclipse.org/Extending_PDT_2.2#Type_inference_hinting and have a
> working code for exactly the case from the article:
>
> $myObject = ClassRegistry::init('MyClass');
> $myObject->... // A list of methods of MyClass is shown ok
>
> However it seems like the same type inference approach does not work when
> not using variable assignment:
>
> ClassRegistry::init('MyClass')->... // No proposals available
>
> Tracing goals evaluation factory for the latter case I found that this
> code snippet does not bring up evaluation of any ExpressionTypeGoal goals for
> context of the call, but starts with evaluation of MethodElementReturnTypeGoal
> that later leads to evaluation of method 'ClassRegistry::init's code.
>
> Attempting to implement evaluation of MethodElementReturnTypeGoal I was
> unable to access call context and actual arguments' values. Neither I
> succeeded in attempts to obtain MethodReturnTypeGoal object (which has
> getArguments() method)
>
>
> I also tried to utilize code assist strategy via ClassMemberContext. At
> first glance it looked promising. However I was unable to find out reciever
> class for '->' operator, as ClassMemberContext.getLhsTypes() returns empty
> list for the example above.
>
> Albeit I'm actually have access to call context with ClassMemberContext, I'm
> not happy with it - as it provides only text of call context via
> getStatementText() and it turns out that I have to parse this text manually.
>
> * So, can anybody help me by pointing directions that I should dig further?
> * Is there an access from MethodElementReturnTypeGoal to call context or actual
> call arguments?
> * Why there is no attempt to evaluate goal for call context prior to
> goal for method's content?
> * Is there a way to access goal evaluator from ClassMemberContext?
> * Do I have a broken installation or facing a known bug?
>
>
> Thank you in advance.
>
> --
> Victor Kupriyanov
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>
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>
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>
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--
Thanks!
Best Regards!
Zhao