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Util string_to_list with braces #1361

merged 3 commits into from May 19, 2019


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commented May 8, 2019

The changes in #1327 caused new evaluations of Util.string_to_list that can result in the splitting of conditional events when merging dictionaries.

This PR extends the logic of string_to_list to maintain spaces within braces when it splits, resulting in the expected behavior

>>> Util.string_to_list("event1 event2{not some_condition} event3")
["event1", "event2{not some_condition}", "event3"]

Because the regex is more computionally demanding than the native String.replace().split(), the new logic is only performed if the string has a brace. Otherwise, the old logic is used.


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commented May 9, 2019

Wow where did I break that? Thanks for the fix!

new_list = re.findall(r'([\w|-]+?\{.*?\}|[\w|-]+)', string)
# Convert commas to spaces, then split the string into a list
new_list = string.replace(",", " ").split()

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jabdoa2 May 10, 2019


I guess whitespace and/or comma is also not such a good idea, right? We should convert this into something more explicit (not necessarily now)

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avanwinkle May 12, 2019

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It feels like an "it was good enough at the time" decisions, and generally speaking it's sufficient. I wouldn't want to change anything that would break existing configs, although accepting both commas and spaces is more complex than doing strict space separation.


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commented May 12, 2019

Honestly @jabdoa2 I couldn't find exactly where it was broken. I tracked the bug based on the logs throwing for unknown slides, widgets, et cetera with names like slide_singleplayer{ball==3 and that led me to the spaces in conditionals.

I then started working back through commits and found that the event player merge was what broke it, but I couldn't find where. Just made a fix instead :)

@avanwinkle avanwinkle merged commit b625a93 into missionpinball:dev May 19, 2019

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avanwinkle pushed a commit to avanwinkle/mpf that referenced this pull request May 19, 2019

Anthony van Winkle Anthony van Winkle
Merge branch 'dev' into machine-settings-bugfix
* dev:
  Util string_to_list with braces (missionpinball#1361)

@avanwinkle avanwinkle deleted the avanwinkle:util-line-split-with-braces branch May 22, 2019

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