Rulewright.Execution 0.3.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. .NET Framework 4.8 This package targets .NET Framework 4.8. The package is compatible with this framework or higher. 
dotnet add package Rulewright.Execution --version 0.3.0
                    


                    

                
NuGet\Install-Package Rulewright.Execution -Version 0.3.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Rulewright.Execution" Version="0.3.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Rulewright.Execution" Version="0.3.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Rulewright.Execution" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Rulewright.Execution --version 0.3.0
                    


                    

                
#r "nuget: Rulewright.Execution, 0.3.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Rulewright.Execution@0.3.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Rulewright.Execution&version=0.3.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Rulewright.Execution&version=0.3.0
                    


                            Install as a Cake Tool

Rulewright.Execution

The Rulewright evaluation engine: an expression-tree rule compiler, a dynamic-fact interpreter fallback, a thread-safe compiled delegate cache, and the RulewrightBuilder/RulewrightEngine public API.

Install

dotnet add package Rulewright.Execution
dotnet add package Rulewright.Json.SystemText   # or Rulewright.Json.NewtonsoftJson

Most users want Rulewright instead — it includes this package, a JSON adapter, and the built-in functions in one reference. Install Rulewright.Execution directly to choose your own JSON adapter and skip the function catalog.

Use it

using Rulewright.Core;
using Rulewright.Execution;
using Rulewright.Json.SystemText;

var engine = new RulewrightBuilder()
    .UseJsonReader(new SystemTextJsonReader())
    .RegisterFunction("IsBusinessDay", (fieldValue, value) => /* ... */ true)
    .Build();

LoadedRuleSet ruleSet = engine.LoadRuleSet(json);   // parse + validate once

var result = engine.Evaluate(ruleSet, customerOrder, new EvaluationOptions
{
    EnableTrace = true,
    StopOnFirstMatch = false,
});

One RulewrightEngine is thread-safe and serves concurrent evaluations. Load a rule set once and keep it: parsing, validation, priority ordering, and content hashing all happen there, and compilation happens lazily per fact type on first evaluation.

Two execution paths

Typed facts compile to delegates via expression trees. Field paths become chained, null-guarded member accesses; comparison constants convert to the field's exact CLR type at compile time, so evaluations run with no reflection, no string parsing, and no boxing of value-type comparisons. A missing member is a load-time RuleCompilationException, not a runtime surprise.

Dictionary facts (IDictionary<string, object>, nested, with cached-reflection fallback for POCOs inside) run the interpreter. Both paths share the same operator, null, and arithmetic semantics, and the result's CompilationMode says which one ran — the slower path is never silent.

Tracing costs nothing when off

Each rule compiles two delegates from the same builder: a plain Func<TFact, bool> with no tracing artifacts, and a traced variant that records each condition node's outcome. Untraced evaluation calls the first one, so tracing is not a runtime flag check on the hot path.

foreach (RuleTrace rule in result.Trace!.Rules)
    Console.WriteLine($"{rule.RuleId}: fired={rule.Fired} skipped={rule.Skipped}");

Regex safety

MatchesRegex patterns run against consumer-supplied fact data, so matching is time-bounded — one second by default, raising RegexMatchTimeoutException rather than letting a pattern with catastrophic backtracking pin a thread. Change the bound with .UseRegexTimeout(TimeSpan.FromMilliseconds(250)).

Requirements

.NET Framework 4.8, .NET Standard 2.0, .NET 8.0 or .NET 10.0.

NativeAOT: the compiled path uses Expression.Compile, which NativeAOT does not support. Use dictionary facts there — the engine reports CompilationMode.Interpreted.

License

MIT.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 is compatible.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (2)

Showing the top 2 NuGet packages that depend on Rulewright.Execution:

Package Downloads
Rulewright.Extensions.Functions

Built-in custom functions and registration/discovery helpers for Rulewright (the 'custom' operator).
Rulewright

The Rulewright rule engine — everything you need in one package: the core domain model, JSON parsing and schema validation, the expression-tree evaluation engine, the System.Text.Json adapter, and the built-in custom functions. Rules are plain JSON; evaluation is compiled expression trees. Install this unless you want to pick pieces individually.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
0.3.0 72 9/10/2026
0.1.1 157 8/29/2026

See https://github.com/albahadly/rulewright/releases for release notes.