## [Unreleased] ## [0.2.1] - 2023-07-26 ### Improvements Collection type declarations are now better supported, i.e. declaring "an array of strings" is now possible: ```ruby Cel::Types[:list, :string] # array of strings Cel::Environment.new( names: Cel::Types[:list, :string], owned_by: Cel::Types[:map, :string] # hash map of string keys ) ``` ### Bugfixes Collections passed as variables of an expression are now correctly cast to Cel types: ```ruby env.evaluate("a", { a: [1, 2, 3] }) #=> now returns a Cel::List ``` Conversely, custom functions now expose ruby types in the blocks, instead of its Cel counterparts: ```ruby func = Cel::Function(:list, :list, return_type: :list) do |a, b| # a is now a ruby array, b as well a & b # function returns a ruby array, will be converted to a Cel::List for use in the expression end ``` ## [0.2.0] - 2023-01-17 ### Features #### Timestamp/Duration types Implementing `Cel::Timestamp` and `Cel::Duration` CEL types, along with support for functions for those types (such as `getDate`, `getDayOfYear`). ```ruby Cel::Environment.new.evaluate("timestamp('2022-12-25T00:00:00Z').getDate()") #=> 25 Cel::Environment.new.evaluate("duration('3600s10ms').getHours()") #=> 1 ``` #### Protobuf-to-CEL conversion Support for auto-conversion of certain protobuf messages in the `google.protobf` package to CEL types. https://github.com/google/cel-spec/blob/master/doc/langdef.md#dynamic-values ```ruby Cel::Environment.new.evaluate("google.protobuf.BoolValue{value: true}") #=> true Cel::Environment.new.evaluate("google.protobuf.Value{string_value: 'bla'}") #=> "bla" ``` #### Custom Functions `cel` supports the definition of custom functions in the environment, to be used in expressions: ```ruby Cel::Environment.new(foo: Cel::Function(:int, :int, return_type: :int) { |a, b| a + b }).evaluate("foo(2, 2)") #=> 4 ``` ### Expression encoding/decoding Expressions can now be encoded and decoded, to improve storage / reparsing to and from JSON, for example. ```ruby enc = Cel::Environment.new.encode("1 == 2") #=> ["op", ... store_to_db(JSON.dump(enc)) # then, somewhere else env = Cel::Environment.new ast = env.decode(JSON.parse(read_from_db)) env.evaluate(ast) #=> 3 ``` **NOTE**: This feature is only available in ruby 3.1 . ### Bugfixes * fixed parser bug disallowing identifiers composed "true" or "false" (such as "true_name"). ## [0.1.2] - 2022-11-10 point release to update links in rubygems. ## [0.1.1] - 2022-08-11 * fixed handling of comparison of primmitive types with Cel types. * fixed truffleruby compatibility by improving parser number handling. ## [0.1.0] - 2021-11-23 - Initial release