Example usage for org.eclipse.jdt.internal.compiler.util HashtableOfObjectToInt keysToArray

Introduction

In this page you can find the example usage for org.eclipse.jdt.internal.compiler.util HashtableOfObjectToInt keysToArray.

Prototype

public void keysToArray(Object[] array) 

Source Link

Usage

From source file:org.eclipse.jdt.core.dom.CompilationUnitResolver.java

License:Open Source License

public static IBinding[] resolve(final IJavaElement[] elements, int apiLevel, Map compilerOptions,
        IJavaProject javaProject, WorkingCopyOwner owner, int flags, IProgressMonitor monitor) {

    final int length = elements.length;
    final HashMap sourceElementPositions = new HashMap(); // a map from ICompilationUnit to int[] (positions in elements)
    int cuNumber = 0;
    final HashtableOfObjectToInt binaryElementPositions = new HashtableOfObjectToInt(); // a map from String (binding key) to int (position in elements)
    for (int i = 0; i < length; i++) {
        IJavaElement element = elements[i];
        if (!(element instanceof SourceRefElement))
            throw new IllegalStateException(element + " is not part of a compilation unit or class file"); //$NON-NLS-1$
        Object cu = element.getAncestor(IJavaElement.COMPILATION_UNIT);
        if (cu != null) {
            // source member
            IntArrayList intList = (IntArrayList) sourceElementPositions.get(cu);
            if (intList == null) {
                sourceElementPositions.put(cu, intList = new IntArrayList());
                cuNumber++;/*  w  w  w .  j ava2s. c o m*/
            }
            intList.add(i);
        } else {
            // binary member
            try {
                String key = ((BinaryMember) element).getKey(true/*open to get resolved info*/);
                binaryElementPositions.put(key, i);
            } catch (JavaModelException e) {
                throw new IllegalArgumentException(element + " does not exist"); //$NON-NLS-1$
            }
        }
    }
    ICompilationUnit[] cus = new ICompilationUnit[cuNumber];
    sourceElementPositions.keySet().toArray(cus);

    int bindingKeyNumber = binaryElementPositions.size();
    String[] bindingKeys = new String[bindingKeyNumber];
    binaryElementPositions.keysToArray(bindingKeys);

    class Requestor extends ASTRequestor {
        IBinding[] bindings = new IBinding[length];

        public void acceptAST(ICompilationUnit source, CompilationUnit ast) {
            // TODO (jerome) optimize to visit the AST only once
            IntArrayList intList = (IntArrayList) sourceElementPositions.get(source);
            for (int i = 0; i < intList.length; i++) {
                final int index = intList.list[i];
                SourceRefElement element = (SourceRefElement) elements[index];
                DOMFinder finder = new DOMFinder(ast, element, true/*resolve binding*/);
                try {
                    finder.search();
                } catch (JavaModelException e) {
                    throw new IllegalArgumentException(element + " does not exist"); //$NON-NLS-1$
                }
                this.bindings[index] = finder.foundBinding;
            }
        }

        public void acceptBinding(String bindingKey, IBinding binding) {
            int index = binaryElementPositions.get(bindingKey);
            this.bindings[index] = binding;
        }
    }
    Requestor requestor = new Requestor();
    resolve(cus, bindingKeys, requestor, apiLevel, compilerOptions, javaProject, owner, flags, monitor);
    return requestor.bindings;
}

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