CodeFrame

Build code frames that point to a specific location. Inspired by @babel/code-frame. This is mainly useful for error locations (syntax errors, etc).

Screenshot of colorized output:

Installation

The package can be installed by adding code_frame to your list of dependencies in mix.exs:

def deps do
  [{:code_frame, "~> 0.1.0"}]
end

Don't forget to run mix deps.get to fetch the new dependencies.

Usage

Building a custom codeframe is pretty straightforward. Just pass the string and specify the line you want to draw attention to and thats it.

defmodule Foo do
  import CodeFrame

  def main() do
    my_string = "foo\nbar\nbaz"
    
    frame = build(my_string, 1)
    
    IO.puts(frame)
  end
end

build() has the following options:

Option	Description
lines_before: integer	Number of lines to show before the highlighted one.
lines_after: integer	Number of lines to show after the highlighted one.
colors: boolean	Force enabling/disabling of colorized output.

License

MIT, see License file.