mparlak / Flee
Fast Lightweight Expression Evaluator
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csharp
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Flee (Supports .Net Core 2.0)
Fast Lightweight Expression Evaluator. Convert this project vb.net to c#.
Project Description
Flee is an expression parser and evaluator for the .NET framework. It allows you to compute the value of string expressions such as sqrt(a^2 + b^2) at runtime. It uses a custom compiler, strongly-typed expression language, and lightweight codegen to compile expressions directly to IL. This means that expression evaluation is extremely fast and efficient.
Features
- Fast and efficient expression evaluation
- Small, lightweight library
- Compiles expressions to IL using a custom compiler, lightweight codegen, and the DynamicMethod class
- Expressions (and the IL generated for them) are garbage-collected when no longer used
- Does not create any dynamic assemblies that stay in memory
- Backed by a comprehensive suite of unit tests
- Culture-sensitive decimal point
- Fine-grained control of what types an expression can use
- Supports all arithmetic operations including the power (^) operator
- Supports string, char, boolean, and floating-point literals
- Supports 32/64 bit, signed/unsigned, and hex integer literals
- Features a true conditional operator
- Supports short-circuited logical operations
- Supports arithmetic, comparison, implicit, and explicit overloaded operators
- Variables of any type can be dynamically defined and used in expressions
- CalculationEngine: Reference other expressions in an expression and recalculate in natural order
- Expressions can index arrays and collections, access fields and properties, and call functions on various types
- Generated IL can be saved to an assembly and viewed with a disassembler
Installing Flee
You should install Flee with NuGet:
Install-Package Flee
Or via the .NET Core command line interface:
dotnet add package Flee
NuGet Packages
| Name | NuGet |
|---|---|
| Flee |  |
More information
- Examples to learn how to create and evaluate expressions.
License
Flee is licensed under the LGPL. This means that as long as you dynamically link (ie: add a reference) to the officially released assemblies, you can use it in commercial and non-commercial applications.
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