module Haml::Util

Haml does heavy transformations to strings that contain interpolation without a way of perfectly inverting that transformation.

We need this monkey patch to have a way of recovering the original strings as they are in the haml files, so that we can use them and then autocorrect them.

The HamlLint::Document carries over a hash of interpolation to original string. The below patches are there to extract said information from Haml’s parsing.

Public Class Methods

unescape_interpolation_to_original_cache() click to toggle source

The cache for the current Thread (technically Fiber)

# File lib/haml_lint/extensions/haml_util_unescape_interpolation_tracking.rb, line 13
def self.unescape_interpolation_to_original_cache
  Thread.current[:haml_lint_unescape_interpolation_to_original_cache] ||= {}
end
unescape_interpolation_to_original_cache_take_and_wipe() click to toggle source

As soon as a HamlLint::Document has finished processing a HAML source, this gets called to get a copy of this cache and clear up for the next HAML processing

# File lib/haml_lint/extensions/haml_util_unescape_interpolation_tracking.rb, line 19
def self.unescape_interpolation_to_original_cache_take_and_wipe
  value = unescape_interpolation_to_original_cache.dup
  unescape_interpolation_to_original_cache.clear
  value
end

Public Instance Methods

unescape_interpolation(str, escape_html = nil)
unescape_interpolation_with_original_tracking(str, escape_html = nil) click to toggle source

Overriding the unescape_interpolation method to store the return and original string in the cache.

# File lib/haml_lint/extensions/haml_util_unescape_interpolation_tracking.rb, line 27
def unescape_interpolation_with_original_tracking(str, escape_html = nil)
  value = unescape_interpolation_without_original_tracking(str, escape_html)
  Haml::Util.unescape_interpolation_to_original_cache[value] = str
  value
end
Also aliased as: unescape_interpolation
unescape_interpolation_without_original_tracking(str, escape_html = nil)