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Ran 17 Dec 2024 06:46PM UTC

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Committed 17 Dec 2024 06:42PM UTC coverage: 72.464%. Remained the same

Job # 12379357612.6

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push

github

Committed by

web-flow

Commit Message

expr: improved parser (#879)

* expr: improved parser

* The old expression parser didn't work for some basic expressions I tested, and it was a bit difficult to debug because everything happened in the one evaluate() function
* Replace the code with a parser based on the OpenBSD version
* Parsing different operator priorities is delegated to different functions so overall this is a little clearer
* Add COPYRIGHT and AUTHOR sections in pod

%perl expr \( 1 \+ 1 \) \* 200
400
%perl expr "true" '&' ''
0
%perl expr 0 '|' 'true'
true
%perl expr 2 '*' 3 '+' 4
10
%perl expr 2 '+' 3 '*' 4
14
%perl expr "hotel" \: "ho"
2
%perl expr "hotel" \: "tel" # no match: regex is implicitly tied to start of string
0

* Update Authors metadata

Michael Mikonos is responsible for a significant portion of the code so he gets credit too.

---------

Co-authored-by: brian d foy <briandfoy@pobox.com>

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