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Diffstat (limited to 'Doc/lib/libpprint.tex')
| -rw-r--r-- | Doc/lib/libpprint.tex | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Doc/lib/libpprint.tex b/Doc/lib/libpprint.tex index 3ecc7bc..22ffd7b 100644 --- a/Doc/lib/libpprint.tex +++ b/Doc/lib/libpprint.tex @@ -173,3 +173,26 @@ this returns false. \begin{methoddesc}{isrecursive}{object} Determine if the object requires a recursive representation. \end{methoddesc} + +This method is provided as a hook to allow subclasses to modify the +way objects are converted to strings. The default implementation uses +the internals of the \function{saferepr()} implementation. + +\begin{methoddesc}{format}{object, context, maxlevels, level} +Returns three values: the formatted version of \var{object} as a +string, a flag indicating whether the result is readable, and a flag +indicating whether recursion was detected. The first argument is the +object to be presented. The second is a dictionary which contains the +\function{id()} of objects that are part of the current presentation +context (direct and indirect containers for \var{object} that are +affecting the presentation) as the keys; if an object needs to be +presented which is already represented in \var{context}, the third +return value should be true. Recursive calls to the \method{format()} +method should add additionaly entries for containers to this +dictionary. The fourth argument, \var{maxlevels}, gives the requested +limit to recursion; this will be \code{0} if there is no requested +limit. This argument should be passed unmodified to recursive calls. +The fourth argument, \var{level} gives the current level; recursive +calls should be passed a value less than that of the current call. +\versionadded{2.3} +\end{methoddesc} |