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The expression-language is a lightweight calculation component and parser tool that compiles and evaluates single-line string expressions against runtime variables. It functions as an expression engine that parses logical expressions into executable code or evaluates them directly against provided variables and functions to power dynamic rule evaluation and configuration.
The main features of symfony/expression-language are: Expression Evaluators, Parsed Code Caching, Compiler Caches, Dynamic Variable Injection, Runtime Variable Injections, Business Rule Evaluation, Custom Function Registrations, Expression Validators.
Open-source alternatives to symfony/expression-language include: knetic/govaluate — govaluate is a Go expression evaluator and runtime logic parser. It functions as a dynamic rule engine that converts… killme2008/aviatorscript — Aviatorscript is a high-performance scripting language and expression evaluation engine designed for integration… microsoft/rulesengine — RulesEngine is a business logic evaluator for .NET that executes complex rule workflows and dynamic expressions… alibaba/qlexpress — QLExpress is a dynamic scripting engine and expression language for the Java platform. It functions as a runtime… rhaiscript/rhai — Rhai is an embedded scripting engine and dynamically typed language designed for integration into Rust applications.… unisonweb/unison.
govaluate is a Go expression evaluator and runtime logic parser. It functions as a dynamic rule engine that converts string-based expressions into executable operations, allowing for the calculation of mathematical and logical expressions at runtime. The library enables the execution of business rules and custom formulas without recompiling source code. It supports extending evaluation behavior through the injection of external parameters and the execution of user-defined custom functions. The system provides capabilities for dynamic data validation, including regular expression matching and
Aviatorscript is a high-performance scripting language and expression evaluation engine designed for integration within Java applications. It enables the dynamic execution of mathematical and logical formulas by compiling script instructions directly into Java bytecode at runtime. The engine distinguishes itself by transforming dynamic logic into machine-readable instructions, allowing for near-native execution speeds. It includes a built-in caching mechanism that stores compiled bytecode to eliminate redundant parsing and compilation overhead during repeated formula execution. This library
RulesEngine is a business logic evaluator for .NET that executes complex rule workflows and dynamic expressions against input data. It functions as a dynamic expression evaluator and an externalized logic framework, allowing the definition and management of business rules in JSON format to change application behavior without recompiling code. The project decouples decision logic from source code by loading policies from external files or databases. It supports the registration of custom classes and methods to extend standard expression capabilities through type injection. The framework cover
QLExpress is a dynamic scripting engine and expression language for the Java platform. It functions as a runtime expression evaluator and business rule engine, allowing applications to execute scripts and evaluate business logic without requiring system recompilation. The engine distinguishes itself through a secure scripting sandbox that enforces security policies via class whitelisting and execution timeouts. It supports high-precision mathematics to prevent rounding errors and provides language alias support to create domain-specific languages that resemble natural language. Additional cap