Sourced from github.com/google/cel-go's releases.

Release v0.25.0

Features & Enhancements

This release introduces features for richer configuration-based CEL, AI prompt generation from config files, additional documentation, and 3x performance when evaluating traced / state-tracking expressions. This release also introduces a unit test runner framwork.

#1141: Expose extension option factory as a public method

#1143: Add a new compiler tool which can be used to compile CEL expressions and policies using serialized environment

#1151: Lightweight observable evaluation

#1155: Utilities for formatting and parsing documentation strings

#1156: Support for documentation and example strings in CEL environments

#1158: Re-export interpreter.AttributePattern in package cel.

#1159: Document the standard library macros and functions

#1160: Prompt generation for AI-assisted authoring based on a CEL environment

#1117: Add LateFunctionBinding declaration and fix constant folding

#1163: Initialize stateful observers prior to evaluation

#1164: Unparse Expr values to strings

#1149: Add test runner library

#1167: REPL: Add an extension option for two var comprehensions

Fixes

Several fixes were implemented, including updating strings.format to better adhere to the specification, correcting constant folding logic alongside the late binding feature, removing a non-functional check in test code, and adding argument count validation for optFieldSelect.

#1133: Update strings.format to adhere to the specification

#1117: Add LateFunctionBinding declaration and fix constant folding

#1161: Remove non-functional optional check in test-only selection

#1168: Check arg count when validating optFieldSelect

Refactoring & Internal Improvements

General refactoring was performed across the codebase. Coverage and comments for Activation methods were improved. The test runner library was refactored to create options from flags and improve code structure.

#1145: Refactoring changes

#1150: Additional comments and coverage for Activation methods

... (truncated)

• 9d29b7f Refactoring changes to create a test runner option from passed flags, correct...
• 5f44021 Check arg count when validating optFieldSelect (#1168)
• 5de96a5 Add two var comprehensions to repl (#1167)
• 2aa9572 Add test runner library (#1149)
• 13e5296 Unparse Expr values to strings (#1164)
• 3da6139 Initial stateful observers prior to evaluation (#1163)
• 55657d8 Document optional library and increase docs coverage (#1162)
• 0f9133d Add LateFunctionBinding declaration and fix constant folding (#1117)
• 6b7ecea Remove non-functional optional test in field selection (#1161)
• 94b45f0 Prompt generation for AI-assisted authoring based on a CEL environment (#1160)
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