4 ms·

Google's Common Expression Language for Expression Evaluation

• devj 7y ago
  # Fast, portable, non-Turing complete expression evaluation Common Expression Language (CEL) is a non-Turing complete language designed for simplicity, speed, safety, and portability. CEL is designed to be evaluated without a sandbox, making it ideal for use within latency critical applications. ## Features - Familiar C-like syntax common to C++, Go, Java, and TypeScript. - Gradual typing with first-class support for Protobuf and JSON types. - High performance evaluators in C++ and Go with a rich set of standard operators. ## How Google uses Common Expression Language Google uses CEL as the expression component of IAM and Firebase security policies, as well as within Istio Mixer configs.