function-call-graph

This repository generates function call dependency graphs of Haskell files. It is useful for viewing the structure of large libraries, and visualizing the dependencies between subsets of project files.

Build steps

stack init
stack install

Usage

function-call-graph accepts an arbitrary number of filenames as input arguments, including wildcards. Each file is parsed using Haskell's syntax for function declaration and application. In particular, top-level function definitions occur immediately after a newline character.

Example function-call-graph usage

function-call-graph */*.hs | dot -Tsvg -o ~/function-call-graph.svg

Current limitations

• Infix operators are not supported.
• Unicode is not supported.
• Since this is a very naive parser, some preprocessor directives and text inside quasiquoters get parsed as functions.
• There's no option to read files or apply a wildcard recursively.