Examples with IHoverHelpInvocationContext org.eclipse.cdt.ui.text.IHoverHelpInvocationContext used on opensource projects

Example 1 with IHoverHelpInvocationContext

use of org.eclipse.cdt.ui.text.IHoverHelpInvocationContext in project linuxtools by eclipse.

the class LibHover method getFunctionInfo.

@Override
public IFunctionSummary getFunctionInfo(ICHelpInvocationContext context, ICHelpBook[] helpBooks, String name) {
    IFunctionSummary f;
    f = null;
    ITranslationUnit t = context.getTranslationUnit();
    String className = null;
    ICPPFunctionType methodType = null;
    if (t.isCXXLanguage()) {
        try {
            if (context instanceof IHoverHelpInvocationContext) {
                // We know the file offset of the member reference.
                IRegion region = ((IHoverHelpInvocationContext) context).getHoverRegion();
                // Now, let's find the declaration of the method.  We need to do this because we want the specific
                // member prototype to go searching for.  There could be many members called "x" which have different
                // documentation.
                final IASTName[] result = { null };
                EnclosingASTNameJob job = new EnclosingASTNameJob(t, region.getOffset(), region.getLength());
                job.schedule();
                try {
                    job.join();
                } catch (InterruptedException e) {
                    // just return
                    return null;
                }
                if (job.getResult() == Status.OK_STATUS) {
                    result[0] = job.getASTName();
                }
                if (result[0] != null) {
                    final IBinding binding = result[0].getBinding();
                    // Check to see we have a member function.
                    if (binding instanceof ICPPFunction) {
                        methodType = ((ICPPFunction) binding).getType();
                        // We have a member function, find the class name.
                        IBinding owner = ((ICPPFunction) binding).getOwner();
                        if (owner instanceof ICPPClassType) {
                            className = getClassName((ICPPClassType) owner);
                        }
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    // Loop through all the documents we have and report first match.
    for (int i = 0; i < helpBooks.length; ++i) {
        LibHoverLibrary l = libraries.get(helpBooks[i]);
        if (name != null) {
            if (className != null) {
                if (l.isCPP()) {
                    f = getMemberSummary(l, className, name, methodType);
                }
            } else {
                f = getFunctionSummary(l, name);
            }
            if (f != null) {
                return f;
            }
        }
    }
    return null;
}