Expr | Awesome Repository

Expr is a high-performance expression evaluation engine and language for Go applications. It functions as a dynamic rule engine that parses and executes custom logic and data validations at runtime without requiring the application to be recompiled.

The system utilizes a sandboxed logic executor to run expressions without side effects. It ensures program termination by employing instruction-level loop detection to prevent infinite loops and isolates the evaluation process from the host system.

The engine employs a bytecode-based virtual machine and abstract syntax tree analysis to achieve execution. It includes static type resolution and runtime type validation to ensure data correctness, using reflection to map external object properties to expression identifiers.

Features

Expression Evaluators - Provides a high-performance engine for parsing and executing custom logical expressions at runtime.
Bytecode Virtual Machines - Compiles expressions into low-level bytecode for high-speed execution via a custom virtual machine.
Embedded Logic Evaluation - Integrates an expression parser and evaluator to execute custom logic within Go applications without recompilation.
Type Validation - Implements type correctness checks during expression evaluation to ensure consistent data handling.

Features

Expression Evaluators - Provides a high-performance engine for parsing and executing custom logical expressions at runtime.
Bytecode Virtual Machines - Compiles expressions into low-level bytecode for high-speed execution via a custom virtual machine.
Embedded Logic Evaluation - Integrates an expression parser and evaluator to execute custom logic within Go applications without recompilation.
Type Validation - Implements type correctness checks during expression evaluation to ensure consistent data handling.