Example usage for org.aspectj.asm IProgramElement walk

Introduction

In this page you can find the example usage for org.aspectj.asm IProgramElement walk.

Prototype

public IProgramElement walk(HierarchyWalker walker);

Source Link

Usage

From source file:org.eclipse.ajdt.core.model.AJProjectModelFacade.java

License:Open Source License

/**
 * find out what java elements are on a particular line
 *//* w w w .  jav  a 2 s  .  c  o m*/
public List/*IJavaElement*/<IJavaElement> getJavaElementsForLine(ICompilationUnit icu, final int line) {
    IProgramElement ipe = javaElementToProgramElement(icu);
    final List/*IProgramElement*/<IProgramElement> elementsOnLine = new LinkedList<IProgramElement>();

    // walk the program element to get all ipes on the source line
    ipe.walk(new CancellableHierarchyWalker() {
        protected void preProcess(IProgramElement node) {
            ISourceLocation sourceLocation = node.getSourceLocation();
            if (sourceLocation != null) {
                if (sourceLocation.getEndLine() < line) {
                    // we don't need to explore the rest of this branch
                    cancel();
                } else if (sourceLocation.getLine() == line) {
                    elementsOnLine.add(node);
                }
            }
        }
    });
    // now convert to IJavaElements
    List /*IJavaElement*/<IJavaElement> javaElements = new ArrayList<IJavaElement>(elementsOnLine.size());
    for (Iterator<IProgramElement> ipeIter = elementsOnLine.iterator(); ipeIter.hasNext();) {
        IProgramElement ipeOnLine = ipeIter.next();
        javaElements.add(programElementToJavaElement(ipeOnLine));
    }
    return javaElements;
}

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From source file:org.eclipse.ajdt.core.model.AJProjectModelFacade.java

License:Open Source License

/**
 * walks the file and grabs all relationships for it.  filter by relationship type
 * pass in null filter for all relationships
 *//*from   ww w  . jav  a  2 s .com*/
public Map<Integer, List<IRelationship>> getRelationshipsForFile(ICompilationUnit icu,
        AJRelationshipType[] relType) {
    final Set<String> interesting;
    if (relType != null) {
        interesting = new HashSet<String>();
        for (int i = 0; i < relType.length; i++) {
            interesting.add(relType[i].getDisplayName());
        }
    } else {
        interesting = null;
    }

    // walk the hierarchy and get relationships for each node
    final Map<Integer, List<IRelationship>> allRelationshipsMap = new HashMap<Integer, List<IRelationship>>();
    IProgramElement ipe = javaElementToProgramElement(icu);
    ipe.walk(new HierarchyWalker() {
        protected void preProcess(IProgramElement node) {
            List<IRelationship> orig = relationshipMap.get(node);

            if (orig == null) {
                return;
            }
            List<IRelationship> nodeRels = new ArrayList<IRelationship>(orig);
            if (interesting != null) {
                for (Iterator<IRelationship> relIter = nodeRels.iterator(); relIter.hasNext();) {
                    IRelationship rel = (IRelationship) relIter.next();
                    if (!interesting.contains(rel.getName())) {
                        relIter.remove();
                    }
                }
            }

            if (nodeRels.size() > 0) {
                List<IRelationship> allRelsForLine;
                Integer line = new Integer(node.getSourceLocation().getLine());
                if (allRelationshipsMap.containsKey(line)) {
                    allRelsForLine = allRelationshipsMap.get(line);
                } else {
                    allRelsForLine = new LinkedList<IRelationship>();
                    allRelationshipsMap.put(line, allRelsForLine);
                }
                allRelsForLine.addAll(nodeRels);
            }
        }
    });
    return allRelationshipsMap;
}

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From source file:org.eclipse.ajdt.core.model.AJProjectModelFacade.java

License:Open Source License

public Set<IType> aspectsForFile(ICompilationUnit cu) {
    IProgramElement ipe = javaElementToProgramElement(cu);
    // compiler should be able to do this for us, but functionality is
    // not exposed. so let's do it ourselves
    final Set<IType> aspects = new HashSet<IType>();
    ipe.walk(new HierarchyWalker() {
        protected void preProcess(IProgramElement node) {
            if (node.getKind() == IProgramElement.Kind.ASPECT) {
                aspects.add((IType) programElementToJavaElement(node));
            }/* w  w w  . j a  va  2s.c  o m*/
        }
    });
    return aspects;
}

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