Java Code Examples for com.sun.source.tree.Tree.Kind#METHOD_INVOCATION

private void addSyntheticTrees(DiffContext diffContext, Tree node) {
    if (node == null) return ;
    
    if (((JCTree) node).pos == (-1)) {
        diffContext.syntheticTrees.add(node);
        return ;
    }
    
    if (node.getKind() == Kind.EXPRESSION_STATEMENT) {
        ExpressionTree est = ((ExpressionStatementTree) node).getExpression();

        if (est.getKind() == Kind.METHOD_INVOCATION) {
            ExpressionTree select = ((MethodInvocationTree) est).getMethodSelect();

            if (select.getKind() == Kind.IDENTIFIER && ((IdentifierTree) select).getName().contentEquals("super")) {
                if (getTreeUtilities().isSynthetic(diffContext.origUnit, node)) {
                    diffContext.syntheticTrees.add(node);
                }
            }
        }
    }
}
 

private static boolean delegatingConstructor(List<JCStatement> stats) {
  if (stats.isEmpty()) {
    return false;
  }
  JCStatement stat = stats.get(0);
  if (stat.getKind() != Kind.EXPRESSION_STATEMENT) {
    return false;
  }
  JCExpression expr = ((JCExpressionStatement) stat).getExpression();
  if (expr.getKind() != Kind.METHOD_INVOCATION) {
    return false;
  }
  JCExpression method = ((JCMethodInvocation) expr).getMethodSelect();
  Name name;
  switch (method.getKind()) {
    case IDENTIFIER:
      name = ((JCIdent) method).getName();
      break;
    case MEMBER_SELECT:
      name = ((JCFieldAccess) method).getIdentifier();
      break;
    default:
      return false;
  }
  return name.contentEquals("this") || name.contentEquals("super");
}
 

/**
    * Detects if we are parameter of this() or super() call
    * @return true if yes
    */ 
   private boolean isThisParameter(TreePath path) {
//anonymous class must not be on the path to top
while(!TreeUtilities.CLASS_TREE_KINDS.contains(path.getLeaf().getKind()) && path.getLeaf().getKind() != Kind.COMPILATION_UNIT) {
    if (path.getParentPath().getLeaf().getKind() == Kind.METHOD_INVOCATION) {
	MethodInvocationTree mi = (MethodInvocationTree) path.getParentPath().getLeaf();
	if(mi.getMethodSelect().getKind() == Kind.IDENTIFIER) {
	    String id = ((IdentifierTree) mi.getMethodSelect()).getName().toString();
	    if ("super".equals(id) || "this".equals(id))
		return true;
	}
    }
    path = path.getParentPath();
}
return false;
   }
 

@TriggerTreeKind(Kind.METHOD_INVOCATION)
public static ErrorDescription computeTreeKind(HintContext ctx) {
    MethodInvocationTree mit = (MethodInvocationTree) ctx.getPath().getLeaf();

    if (!mit.getArguments().isEmpty() || !mit.getTypeArguments().isEmpty()) {
        return null;
    }

    CompilationInfo info = ctx.getInfo();
    Element e = info.getTrees().getElement(new TreePath(ctx.getPath(), mit.getMethodSelect()));

    if (e == null || e.getKind() != ElementKind.METHOD) {
        return null;
    }

    if (e.getSimpleName().contentEquals("toURL") && info.getElementUtilities().enclosingTypeElement(e).getQualifiedName().contentEquals("java.io.File")) {
        ErrorDescription w = ErrorDescriptionFactory.forName(ctx, mit, "Use of java.io.File.toURL()");

        return w;
    }

    return null;
}
 

boolean isSynthetic(CompilationUnitTree cut, Tree leaf) throws NullPointerException {
    JCTree tree = (JCTree) leaf;
    
    if (tree.pos == (-1))
        return true;
    
    if (leaf.getKind() == Kind.METHOD) {
        //check for synthetic constructor:
        return (((JCMethodDecl)leaf).mods.flags & Flags.GENERATEDCONSTR) != 0L;
    }
    
    //check for synthetic superconstructor call:
    if (leaf.getKind() == Kind.EXPRESSION_STATEMENT) {
        ExpressionStatementTree est = (ExpressionStatementTree) leaf;
        
        if (est.getExpression().getKind() == Kind.METHOD_INVOCATION) {
            MethodInvocationTree mit = (MethodInvocationTree) est.getExpression();
            
            if (mit.getMethodSelect().getKind() == Kind.IDENTIFIER) {
                IdentifierTree it = (IdentifierTree) mit.getMethodSelect();
                
                if ("super".equals(it.getName().toString())) {
                    SourcePositions sp = info.getTrees().getSourcePositions();
                    
                    return sp.getEndPosition(cut, leaf) == (-1);
                }
            }
        }
    }
    
    return false;
}
 

@Override
public Void visitMemberSelect(MemberSelectTree tree, Map<String, Object> p) {
    if (tree.getExpression().getKind() == Kind.IDENTIFIER) {
        p.put("request", null);
    }
    
    scan(tree.getExpression(), p);
    
    Union2<String, DeclaredType> leftSide = (Union2<String, DeclaredType>) p.remove("result");
    
    p.remove("request");
    
    if (leftSide != null && leftSide.hasFirst()) {
        String rightSide = tree.getIdentifier().toString();
        
        if (ERROR.equals(rightSide))
            rightSide = "";
        
        boolean isMethodInvocation = getCurrentPath().getParentPath().getLeaf().getKind() == Kind.METHOD_INVOCATION;
        
        //Ignore .class (which will not help us much):
        if (!"class".equals(rightSide))
            hints.add(new EnclosedHint(leftSide.first(), rightSide, !isMethodInvocation));
    }
    
    return null;
}
 

@Override
public List<Fix> run(CompilationInfo info, String diagnosticKey, int offset, TreePath treePath, Data<Void> data) {
    TreePath call = treePath;//.getParentPath();
    
    if (call.getLeaf().getKind() != Kind.METHOD_INVOCATION) {
        call = call.getParentPath();
        if (call.getLeaf().getKind() != Kind.METHOD_INVOCATION) {
            return null;
        }
    }
    
    MethodInvocationTree mit = (MethodInvocationTree) call.getLeaf();
    TypeMirror mType = info.getTrees().getTypeMirror(new TreePath(call, mit.getMethodSelect()));
    
    if (mType == null || mType.getKind() != TypeKind.EXECUTABLE) {
        return null;
    }
    
    ExecutableType methodType = (ExecutableType) mType;
    
    if (methodType.getParameterTypes().isEmpty() || methodType.getParameterTypes().get(methodType.getParameterTypes().size() - 1).getKind() != TypeKind.ARRAY) {
        return null;
    }
    
    ArrayType targetArray = (ArrayType) methodType.getParameterTypes().get(methodType.getParameterTypes().size() - 1);
    TreePath target = new TreePath(call, mit.getArguments().get(mit.getArguments().size() - 1));
    
    return Arrays.asList(new FixImpl(info, target, targetArray.getComponentType()).toEditorFix(),
                         new FixImpl(info, target, targetArray).toEditorFix());
}
 

@TriggerTreeKind({Kind.IDENTIFIER, Kind.MEMBER_SELECT})
@TriggerOptions(TriggerOptions.PROCESS_GUARDED)
public static ErrorDescription before(HintContext ctx) {
    TreePath tp = ctx.getPath();
    VariableElement var = testElement(ctx);

    if (var == null) return null;

    if (tp.getParentPath().getLeaf().getKind() == Kind.MEMBER_SELECT && tp.getParentPath().getParentPath().getLeaf().getKind() == Kind.METHOD_INVOCATION) {
        String methodName = ((MemberSelectTree) tp.getParentPath().getLeaf()).getIdentifier().toString();
        if (READ_METHODS.contains(methodName)) {
            if (tp.getParentPath().getParentPath().getParentPath().getLeaf().getKind() != Kind.EXPRESSION_STATEMENT) {
                record(ctx.getInfo(), var, State.READ);
            }
            return null;
        } else if (WRITE_METHODS.contains(methodName)) {
            if (tp.getParentPath().getParentPath().getParentPath().getLeaf().getKind() != Kind.EXPRESSION_STATEMENT) {
                record(ctx.getInfo(), var, State.WRITE, State.READ);
            } else {
                record(ctx.getInfo(), var, State.WRITE);
            }
            return null;
        }
    }

    record(ctx.getInfo(), var, State.WRITE, State.READ);

    return null;
}
 

static boolean isSynthetic(CompilationInfo info, CompilationUnitTree cut, Tree leaf) throws NullPointerException {
    JCTree tree = (JCTree) leaf;
    
    if (tree.pos == (-1))
        return true;
    
    if (leaf.getKind() == Kind.METHOD) {
        //check for synthetic constructor:
        return (((JCTree.JCMethodDecl)leaf).mods.flags & Flags.GENERATEDCONSTR) != 0L;
    }
    
    //check for synthetic superconstructor call:
    if (leaf.getKind() == Kind.EXPRESSION_STATEMENT) {
        ExpressionStatementTree est = (ExpressionStatementTree) leaf;
        
        if (est.getExpression().getKind() == Kind.METHOD_INVOCATION) {
            MethodInvocationTree mit = (MethodInvocationTree) est.getExpression();
            
            if (mit.getMethodSelect().getKind() == Kind.IDENTIFIER) {
                IdentifierTree it = (IdentifierTree) mit.getMethodSelect();
                
                if ("super".equals(it.getName().toString())) {
                    SourcePositions sp = info.getTrees().getSourcePositions();
                    
                    return sp.getEndPosition(cut, leaf) == (-1);
                }
            }
        }
    }
    
    return false;
}
 

@Override
public void run(CompilationController javac) throws Exception {
    TreePath tpath = null;
    Element method = null;
    
    javac.toPhase(JavaSource.Phase.RESOLVED);
    if (tHandle == null) {
        tpath = javac.getTreeUtilities().pathFor(offset);
    } else {
        tpath = tHandle.resolve(javac);
    }
    
    while (tpath != null) {
        Kind kind = tpath.getLeaf().getKind();
        if (kind == Kind.METHOD || kind == Kind.METHOD_INVOCATION || kind == Kind.MEMBER_SELECT || kind == Kind.NEW_CLASS) {
            method = ScanUtils.checkElement(javac, javac.getTrees().getElement(tpath));
            if (RefactoringUtils.isExecutableElement(method)) {
                break;
            }
            method = null;
        }
        tpath = tpath.getParentPath();
    }
    
    if (method != null) {
        if(isCallerGraph && this.searchFromBase) {
            Collection<ExecutableElement> overriddenMethods = JavaRefactoringUtils.getOverriddenMethods((ExecutableElement)method, javac);
            if(!overriddenMethods.isEmpty()) {
                method = overriddenMethods.iterator().next();
            }
        }
        root = Call.createRoot(javac, tpath, method, isCallerGraph);
    }
}
 

private static boolean isSynthetic(CompilationUnitTree cut, Tree leaf) throws NullPointerException {
    JCTree tree = (JCTree) leaf;

    if (tree.pos == (-1))
        return true;

    if (leaf.getKind() == Kind.METHOD) {
        //check for synthetic constructor:
        return (((JCMethodDecl)leaf).mods.flags & Flags.GENERATEDCONSTR) != 0L;
    }

    //check for synthetic superconstructor call:
    if (cut != null && leaf.getKind() == Kind.EXPRESSION_STATEMENT) {
        ExpressionStatementTree est = (ExpressionStatementTree) leaf;

        if (est.getExpression().getKind() == Kind.METHOD_INVOCATION) {
            MethodInvocationTree mit = (MethodInvocationTree) est.getExpression();

            if (mit.getMethodSelect().getKind() == Kind.IDENTIFIER) {
                IdentifierTree it = (IdentifierTree) mit.getMethodSelect();

                if ("super".equals(it.getName().toString())) {
                    return ((JCCompilationUnit) cut).endPositions.getEndPos(tree) == (-1);
                }
            }
        }
    }

    return false;
}
 

private void addParameterInlineHint(Tree tree) {
    TreePath pp = getCurrentPath().getParentPath();
    Tree leaf = pp.getLeaf();
    if (leaf != null &&
        (leaf.getKind() == Kind.METHOD_INVOCATION || leaf.getKind() == Kind.NEW_CLASS)) {
        int pos = -1;
        if (leaf.getKind() == Kind.METHOD_INVOCATION) {
            pos = MethodInvocationTree.class.cast(leaf).getArguments().indexOf(tree);
        } else if (leaf.getKind() == Kind.NEW_CLASS) {
            pos = NewClassTree.class.cast(leaf).getArguments().indexOf(tree);
        }
        if (pos != (-1)) {
            Element invoked = info.getTrees().getElement(pp);
            if (invoked != null && (invoked.getKind() == ElementKind.METHOD || invoked.getKind() == ElementKind.CONSTRUCTOR)) {
                long start = sourcePositions.getStartPosition(info.getCompilationUnit(), tree);
                long end = start + 1;
                ExecutableElement invokedMethod = (ExecutableElement) invoked;
                pos = Math.min(pos, invokedMethod.getParameters().size() - 1);
                if (pos != (-1)) {
                    boolean shouldBeAdded = true;
                    if (tree.getKind() == Kind.IDENTIFIER &&
                            invokedMethod.getParameters().get(pos).getSimpleName().equals(
                                    IdentifierTree.class.cast(tree).getName())) {
                        shouldBeAdded = false;
                    }
                    if (shouldBeAdded) {
                        preText.put(new int[] {(int) start, (int) end},
                                    invokedMethod.getParameters().get(pos).getSimpleName() + ":");
                    }
                }
            }
        }
    }
}
 

@TriggerTreeKind(Kind.MEMBER_SELECT)
public static List<ErrorDescription> run(HintContext ctx) {
    CompilationInfo info = ctx.getInfo();
    TreePath treePath = ctx.getPath();

    Element e = info.getTrees().getElement(treePath);
    EnumSet<ElementKind> supportedTypes = EnumSet.of(ElementKind.METHOD, ElementKind.ENUM_CONSTANT, ElementKind.FIELD);
    if (e == null || !e.getModifiers().contains(Modifier.STATIC) || !supportedTypes.contains(e.getKind())) {
        return null;
    }

    if (ElementKind.METHOD.equals(e.getKind())) {
        TreePath mitp = treePath.getParentPath();
        if (mitp == null || mitp.getLeaf().getKind() != Kind.METHOD_INVOCATION) {
        return null;
    }
        if (((MethodInvocationTree) mitp.getLeaf()).getMethodSelect() != treePath.getLeaf()) {
        return null;
    }
        List<? extends Tree> typeArgs = ((MethodInvocationTree) mitp.getLeaf()).getTypeArguments();
        if (typeArgs != null && !typeArgs.isEmpty()) {
        return null;
    }
    }
    Element enclosingEl = e.getEnclosingElement();
    if (enclosingEl == null) {
        return null;
    }
    String sn = e.getSimpleName().toString();
    // rules out .class, but who knows what keywords will be abused in the future.
    if (SourceVersion.isKeyword(sn)) {
        return null;
    }
    TreePath cc = getContainingClass(treePath);
    if (cc == null){
        return null;
    }
    Element klass = info.getTrees().getElement(cc);
    if (klass == null || klass.getKind() != ElementKind.CLASS) {
        return null;
    }
    String fqn = null;
    String fqn1 = getFqn(info, e);
    if (!isSubTypeOrInnerOfSubType(info, klass, enclosingEl) && !isStaticallyImported(info, fqn1)) {
        if (hasMethodNameClash(info, klass, sn) || hasStaticImportSimpleNameClash(info, sn)) {
            return null;
        }
        fqn = fqn1;
    }
    Scope currentScope = info.getTrees().getScope(treePath);
    TypeMirror enclosingType = e.getEnclosingElement().asType();
    if (enclosingType == null || enclosingType.getKind() != TypeKind.DECLARED || !info.getTrees().isAccessible(currentScope, e, (DeclaredType) enclosingType)) {
        return null;
    }
    String desc = NbBundle.getMessage(StaticImport.class, "ERR_StaticImport");
    ErrorDescription ed = ErrorDescriptionFactory.forTree(ctx, treePath, desc, new FixImpl(TreePathHandle.create(treePath, info), fqn, sn).toEditorFix());
    if (ctx.isCanceled()) {
        return null;
    }
    return Collections.singletonList(ed);
}
 

@TriggerTreeKind(Kind.METHOD_INVOCATION)
public static ErrorDescription hintPattern2(HintContext ctx) {
    return null;
}
 

private String simpleName(Tree t) {
    if (t == null) {
        return Bundle.DisplayName_Unknown();
    }
    if (t.getKind() == Kind.IDENTIFIER) {
        return ((IdentifierTree) t).getName().toString();
    }

    if (t.getKind() == Kind.MEMBER_SELECT) {
        return ((MemberSelectTree) t).getIdentifier().toString();
    }

    if (t.getKind() == Kind.METHOD_INVOCATION) {
        return scan(t, null);
    }

    if (t.getKind() == Kind.PARAMETERIZED_TYPE) {
        return simpleName(((ParameterizedTypeTree) t).getType()) + "<...>"; // NOI18N
    }

    if (t.getKind() == Kind.ARRAY_ACCESS) {
        return simpleName(((ArrayAccessTree) t).getExpression()) + "[]"; //NOI18N
    }

    if (t.getKind() == Kind.PARENTHESIZED) {
        return "(" + simpleName(((ParenthesizedTree)t).getExpression()) + ")"; //NOI18N
    }

    if (t.getKind() == Kind.TYPE_CAST) {
        return simpleName(((TypeCastTree)t).getType());
    }

    if (t.getKind() == Kind.ARRAY_TYPE) {
        return simpleName(((ArrayTypeTree)t).getType());
    }

    if (t.getKind() == Kind.PRIMITIVE_TYPE) {
        return ((PrimitiveTypeTree) t).getPrimitiveTypeKind().name().toLowerCase();
    }
    
    throw new IllegalStateException("Currently unsupported kind of tree: " + t.getKind()); // NOI18N
}
 

@Override protected void performRewrite(JavaFix.TransformationContext ctx) throws Exception {
    WorkingCopy wc = ctx.getWorkingCopy();
    TreePath treePath = ctx.getPath();
            TreeMaker make = wc.getTreeMaker();
            if (treePath.getLeaf().getKind() == Kind.METHOD_INVOCATION) {
                MethodInvocationTree mit = (MethodInvocationTree) treePath.getLeaf();
                CompilationUnitTree cut = wc.getCompilationUnit();
                boolean imported = false;
                String importBundleStar = cut.getPackageName() + ".Bundle.*";
                for (ImportTree it : cut.getImports()) {
                    if (it.isStatic() && it.getQualifiedIdentifier().toString().equals(importBundleStar)) {
                        imported = true;
                        break;
                    }
                }
                if (!imported) {
                    wc.rewrite(cut, make.addCompUnitImport(cut, make.Import(make.Identifier(importBundleStar), true)));
                }
                List<? extends ExpressionTree> args = mit.getArguments();
                List<? extends ExpressionTree> params;
                if (args.size() == 3 && args.get(2).getKind() == Kind.NEW_ARRAY) {
                    params = ((NewArrayTree) args.get(2)).getInitializers();
                } else {
                    params = args.subList(2, args.size());
                }
                wc.rewrite(mit, make.MethodInvocation(Collections.<ExpressionTree>emptyList(), make.Identifier(toIdentifier(key)), params));
            } // else annotation value, nothing to change
            if (!isAlreadyRegistered) {
                EditableProperties ep = new EditableProperties(true);
                InputStream is = ctx.getResourceContent(bundleProperties);
                try {
                    ep.load(is);
                } finally {
                    is.close();
                }
                List<ExpressionTree> lines = new ArrayList<ExpressionTree>();
                for (String comment : ep.getComment(key)) {
                    lines.add(make.Literal(comment));
                }
                lines.add(make.Literal(key + '=' + ep.remove(key)));
                TypeElement nbBundleMessages = wc.getElements().getTypeElement("org.openide.util.NbBundle.Messages");
                if (nbBundleMessages == null) {
                    throw new IllegalArgumentException("cannot resolve org.openide.util.NbBundle.Messages");
                }
                GeneratorUtilities gu = GeneratorUtilities.get(wc);
                Tree enclosing = findEnclosingElement(wc, treePath);
                Tree modifiers;
                Tree nueModifiers;
                ExpressionTree[] linesA = lines.toArray(new ExpressionTree[lines.size()]);
                switch (enclosing.getKind()) {
                case METHOD:
                    modifiers = wc.resolveRewriteTarget(((MethodTree) enclosing).getModifiers());
                    nueModifiers = gu.appendToAnnotationValue((ModifiersTree) modifiers, nbBundleMessages, "value", linesA);
                    break;
                case VARIABLE:
                    modifiers = wc.resolveRewriteTarget(((VariableTree) enclosing).getModifiers());
                    nueModifiers = gu.appendToAnnotationValue((ModifiersTree) modifiers, nbBundleMessages, "value", linesA);
                    break;
                case COMPILATION_UNIT:
                    modifiers = wc.resolveRewriteTarget(enclosing);
                    nueModifiers = gu.appendToAnnotationValue((CompilationUnitTree) modifiers, nbBundleMessages, "value", linesA);
                    break;
                default:
                    modifiers = wc.resolveRewriteTarget(((ClassTree) enclosing).getModifiers());
                    nueModifiers = gu.appendToAnnotationValue((ModifiersTree) modifiers, nbBundleMessages, "value", linesA);
                }
                wc.rewrite(modifiers, nueModifiers);
            // XXX remove NbBundle import if now unused
            OutputStream os = ctx.getResourceOutput(bundleProperties);
            try {
                ep.store(os);
            } finally {
                os.close();
            }
        }
    // XXX after JavaFix rewrite, Savable.save (on DataObject.find(src)) no longer works (JG13 again)
}
 

private List<Documentation> documentationImpl(String code, int cursor, boolean computeJavadoc) {
    code = code.substring(0, cursor);
    if (code.trim().isEmpty()) { //TODO: comment handling
        code += ";";
    }

    if (guessKind(code) == Kind.IMPORT)
        return Collections.emptyList();

    OuterWrap codeWrap = proc.outerMap.wrapInTrialClass(Wrap.methodWrap(code));
    AnalyzeTask at = proc.taskFactory.new AnalyzeTask(codeWrap, keepParameterNames);
    SourcePositions sp = at.trees().getSourcePositions();
    CompilationUnitTree topLevel = at.firstCuTree();
    TreePath tp = pathFor(topLevel, sp, codeWrap.snippetIndexToWrapIndex(cursor));

    if (tp == null)
        return Collections.emptyList();

    TreePath prevPath = null;
    while (tp != null && tp.getLeaf().getKind() != Kind.METHOD_INVOCATION &&
           tp.getLeaf().getKind() != Kind.NEW_CLASS && tp.getLeaf().getKind() != Kind.IDENTIFIER &&
           tp.getLeaf().getKind() != Kind.MEMBER_SELECT) {
        prevPath = tp;
        tp = tp.getParentPath();
    }

    if (tp == null)
        return Collections.emptyList();

    Stream<Element> elements;
    Iterable<Pair<ExecutableElement, ExecutableType>> candidates;
    List<? extends ExpressionTree> arguments;

    if (tp.getLeaf().getKind() == Kind.METHOD_INVOCATION || tp.getLeaf().getKind() == Kind.NEW_CLASS) {
        if (tp.getLeaf().getKind() == Kind.METHOD_INVOCATION) {
            MethodInvocationTree mit = (MethodInvocationTree) tp.getLeaf();
            candidates = methodCandidates(at, tp);
            arguments = mit.getArguments();
        } else {
            NewClassTree nct = (NewClassTree) tp.getLeaf();
            candidates = newClassCandidates(at, tp);
            arguments = nct.getArguments();
        }

        if (!isEmptyArgumentsContext(arguments)) {
            List<TypeMirror> actuals = computeActualInvocationTypes(at, arguments, prevPath);
            List<TypeMirror> fullActuals = actuals != null ? actuals : Collections.emptyList();

            candidates =
                    this.filterExecutableTypesByArguments(at, candidates, fullActuals)
                        .stream()
                        .filter(method -> parameterType(method.fst, method.snd, fullActuals.size(), true).findAny().isPresent())
                        .collect(Collectors.toList());
        }

        elements = Util.stream(candidates).map(method -> method.fst);
    } else if (tp.getLeaf().getKind() == Kind.IDENTIFIER || tp.getLeaf().getKind() == Kind.MEMBER_SELECT) {
        Element el = at.trees().getElement(tp);

        if (el == null ||
            el.asType().getKind() == TypeKind.ERROR ||
            (el.getKind() == ElementKind.PACKAGE && el.getEnclosedElements().isEmpty())) {
            //erroneous element:
            return Collections.emptyList();
        }

        elements = Stream.of(el);
    } else {
        return Collections.emptyList();
    }

    List<Documentation> result = Collections.emptyList();

    try (JavadocHelper helper = JavadocHelper.create(at.task, findSources())) {
        result = elements.map(el -> constructDocumentation(at, helper, el, computeJavadoc))
                         .filter(Objects::nonNull)
                         .collect(Collectors.toList());
    } catch (IOException ex) {
        proc.debug(ex, "JavadocHelper.close()");
    }

    return result;
}
 

private TreeNode convertFieldAccess(MemberSelectTree node, TreePath parent) {
  TreePath path = getTreePath(parent, node);
  String fieldName = node.getIdentifier().toString();
  SourcePosition pos = getPosition(node);
  ExpressionTree selected = node.getExpression();
  TreePath selectedPath = getTreePath(path, selected);
  Element element = getElement(path);
  TypeMirror typeMirror = getTypeMirror(path);
  if (fieldName.equals("this")) {
    return new ThisExpression()
        .setQualifier((Name) convert(selected, path))
        .setTypeMirror(typeMirror);
  }
  if ("super".equals(getMemberName(selected))) {
    SuperFieldAccess newNode =
        new SuperFieldAccess()
            .setVariableElement((VariableElement) element)
            .setTypeMirror(typeMirror);
    if (selected.getKind() == Kind.MEMBER_SELECT) {
      newNode.setQualifier(
          (Name) convert(((MemberSelectTree) selected).getExpression(), selectedPath));
    }
    return newNode;
  }
  if (node.getIdentifier().toString().equals("class")) {
    Type type = convertType(getTypeMirror(selectedPath), pos, false);
    type.setPosition(getPosition(node));
    return new TypeLiteral(typeMirror).setType(type);
  }
  if (selected.getKind() == Kind.IDENTIFIER
      && (!element.getKind().isField() || ElementUtil.isConstant((VariableElement) element))) {
    if (selected.toString().equals("this")) {
      // Just return the constant.
      return new SimpleName(element);
    }
    return new QualifiedName()
        .setName(convertSimpleName(element, typeMirror, pos))
        .setQualifier(
            convertSimpleName(getElement(selectedPath), getTypeMirror(selectedPath), pos))
        .setElement(element);
  }
  if (selected.getKind() == Kind.MEMBER_SELECT) {
    TreeNode newSelected = convertFieldAccess((MemberSelectTree) selected, path).setPosition(pos);
    if (newSelected.getKind() == TreeNode.Kind.QUALIFIED_NAME) {
      return new QualifiedName()
          .setName(convertSimpleName(element, typeMirror, pos))
          .setQualifier((QualifiedName) newSelected)
          .setElement(element);
    }
  }
  if (ElementUtil.isConstant((VariableElement) element)
      && ElementUtil.isStatic(element)
      && !(selected.getKind() == Kind.METHOD_INVOCATION)
      && !(selected.getKind() == Kind.MEMBER_SELECT)
      && !(selected.getKind() == Kind.PARENTHESIZED)) {
    return new QualifiedName()
        .setName(convertSimpleName(element, typeMirror, pos))
        .setQualifier((Name) convert(selected, path))
        .setElement(element);
  }
  return new FieldAccess()
      .setVariableElement((VariableElement) element)
      .setExpression((Expression) convert(selected, path))
      .setName(convertSimpleName(element, typeMirror, pos).setTypeMirror(typeMirror));
}