CEL Interpreter
The Common Expression Language (CEL) is a non-Turing complete language designed for simplicity, speed, safety, and portability. CEL's C-like syntax looks nearly identical to equivalent expressions in C++, Go, Java, and TypeScript. CEL is ideal for lightweight expression evaluation when a fully sandboxed scripting language is too resource intensive.
// Check whether a resource name starts with a group name.
resource.name.
// Determine whether the request is in the permitted time window.
request.time - resource.age < duration("24h")
// Check whether all resource names in a list match a given filter.
auth.claims.email_verified && resources.all(r, r.startsWith(auth.claims.email))
Getting Started
This project includes a parser and an interpreter which means that it can be used to evaluate CEL-expressions. The library aims to be very simple to use, while still being fast, safe, and customizable.
use ;
Examples
Check out these other examples to learn how to use this library:
- Simple - A simple example of how to use the library.
- Variables - Passing variables and using them in your program.
- Functions - Defining and using custom functions in your program.
- Concurrent Execution - Executing the same program concurrently.