\Header{QA}{QA Checks for R Code and/or Documentation}
\alias{checkAssignFuns}{QA}
\alias{checkDocArgs}{QA}
\alias{checkDocStyle}{QA}
\alias{checkMethods}{QA}
\alias{print.checkAssignFuns}{QA}
\alias{print.checkDocArgs}{QA}
\alias{print.checkDocStyle}{QA}
\alias{print.checkMethods}{QA}
\keyword{utilities}{QA}
\keyword{documentation}{QA}
\begin{Description}\relax
Functions for performing various quality checks.\end{Description}
\begin{Usage}
\begin{verbatim}
checkAssignFuns(package, dir, lib.loc = NULL)
checkDocArgs(package, dir, lib.loc = NULL)
checkDocStyle(package, dir, lib.loc = NULL)
checkMethods(package, dir, lib.loc = NULL)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{package}] a character string naming an installed package.
\item[\code{dir}] a character string specifying the path to a package's root
source directory.  This should contain the subdirectories \code{R}
(for R code) and \file{man} with \R{} documentation sources (in Rd
format).  Only used if \code{package} is not given.
\item[\code{lib.loc}] a character vector of directory names of \R{} libraries,
or \code{NULL}.  The default value of \code{NULL} corresponds to all
libraries currently known.  The specified library trees are used to
to search for \code{package}.
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
\code{checkAssignFuns} checks whether assignment functions in the
package R code have their final argument named \code{value}.

\code{checkDocArgs} checks, for all Rd files in a package, whether all
arguments shown in the usage sections of the Rd file are documented in
its arguments section.  It also reports duplicated entries in the
arguments section.

\code{checkDocStyle} investigates how (S3) methods are shown in the
usages of the Rd files in a package.  It reports if methods are shown
along with their generic, which typically causes problems for the
documentation of the primary argument of the generic.  It also finds
the methods shown by their full name (rather than that of the generic
using the Rd \code{\bsl{}method} markup).

\code{checkMethods} checks whether all methods defined in the package
R code have all arguments of the corresponding generic, with
positional arguments of the generics in the same positions for the
method.  The generics are sought first in the given package and then
in the base package.  The rules when \code{...} is involved are
subtle: see the source code.

If using an installed package, the checks needing access to all R
objects of the package will load the package (unless it is the base
package), after possibly detaching an already loaded version of the
package.\end{Details}
\begin{Value}
The functions return objects of class the same as the respective
function names containing the information about problems detected.
There is a \code{print} method for nicely displaying the information
contained in such objects.\end{Value}
\begin{Section}{Warning}
These functions are still experimental.  Both names, interfaces and
values might change in future versions.\end{Section}

