The project of anpai(namely 安排 in Chinese) is a suite of BPMN and DMN spec implementations in rust language.
The interpreter of the FEEL language(Friendly Enough Expression Language) in rust, FEEL is broadly used in DMN and BPMN to provide rule engine and script support, the FEEL module can be included into other rust projects or used as command line executable as FEEL interpreter.
- run
cargo buildto build feel interpreter feel - run
cargo testto run testing
% ./target/debug/anpai feel -c '"hello " + "world"'
"hello world"
% ./target/debug/anpai feel -c '(function(a, b) a + b)(5, 8)'
13
% ./target/debug/anpai feel -c '>8,<4' --vars '{"?": 6}' --top unary-tests
false
# dump AST tree instead of evaluating the script
% ./target/debug/anpai feel -c 'if a > 3 then "larger" else "smaller"' --vars '{a: 5}' --ast
(if (> a 3) "larger" "smaller")
% ./target/debug/anpai feel -c 'some x in [3, 4, 8, 9] satisfies x % 2 = 0'
4
% ./target/debug/anpai feel -c 'every x in [3, 4, 8, 9] satisfies x % 2 = 0'
[4, 8]# evaluate dmn files, given context vars
% ./target/debug/anpai dmn examples/dmn/simpledish.dmn --vars '{season: "Summer", guestCount: 10, guestsWithChildren: true}'
{"Beverages":"Apple Juice"}for more examples please refer to testing