FastExpressionCompiler 3.2.0
FastExpressionCompiler is 10-40x times faster than Expression.Compile()
Install-Package FastExpressionCompiler -Version 3.2.0
dotnet add package FastExpressionCompiler --version 3.2.0
<PackageReference Include="FastExpressionCompiler" Version="3.2.0" />
paket add FastExpressionCompiler --version 3.2.0
#r "nuget: FastExpressionCompiler, 3.2.0"
// Install FastExpressionCompiler as a Cake Addin
#addin nuget:?package=FastExpressionCompiler&version=3.2.0
// Install FastExpressionCompiler as a Cake Tool
#tool nuget:?package=FastExpressionCompiler&version=3.2.0
Release Notes
## v3.2.0 Bug-fix and optimization release
- fixed: #305 CompileFast generates incorrect code with arrays and printing
- fixed: added missing Expression.MakeCatchBlock
- optimized: memory of Expression of T
- optimized: for the custom MethodCallExpression
- optimized: adding the ConstantInt and ConstantOf without boxing and null constant with the less space
## v3.1.0 Feature and bug-fix release
- added: #297 Add custom Constant to string output in the ToCSharpString and ToExpressionString
- added: #303 Add CompilerFlags.ThrowOnNotSupportedException and throw NotSupportedExpressionException when the flag is passed to CompileFast
- fixed: #301 Another case of the InvalidOperationException in the Mapster
- fixed: ListInit compilation for the Dictionary
- fixed: the lookup for the non-public property setter
## v3.0.5 Bug-fix release
- fixed: another case in #301 InvalidOperationException in the Mapster
- fixed: multiple problems with the TryCatch C# and Expression string output
## v3.0.4 Bug-fix release
- fixed: #302 Error compiling expression with array access
## v3.0.3 Bug-fix release
- fixed: #301 InvalidOperationException in the Mapster
- fixed: small bugs in the Lambda ToCSharpString output
## v3.0.2 Bug-fix release
- fixed: #300 Bad label content in ILGenerator in the Mapster benchmark with FEC V3
- fixed: Small issues with the `ToCSharpString()`, specifically in the TryCatch, and the Goto, and the Label expressions
## v3.0.1 Bug-fix release
fixed: #298 LightExpression with the NewExpression of 4 arguments has ArgumentCount = 3
## v3.0.0 - Major feature release
This version contains a lot of fixes and improvements and as-little-as-possible breaking changes.
### **FastExpressionCompiler** and **FastExpressionCompiler.LightExpression**
- Performance and memory consumption are improved, especially for the expressions with the closure and for expressions with the nested lambdas.
- More expression types are supported.
- Many fixes in the IL Emit.
- Added `ToCSharpString()` extension method to output the compile-able C# code described by the expression (tries hard).
- Added `ToExpressionString()` extension method to output the valid expression construction syntax, so given an expression object you'll get e.g. `Lambda(New(...))`.
- Added optional `enum CompilerFlags { Default, NoInvocationLambdaInlining, EnableDelegateDebugInfo}` parameter for the compilation
- `EnableDelegateDebugInfo` adds the diagnostic info into the compiled delegate including its source Expression and C# code. Can be used as following:
```cs
var f = e.CompileFast(true, CompilerFlags.EnableDelegateDebugInfo);
var di = f.Target as IDelegateDebugInfo;
Assert.IsNotNull(di.Expression);
Assert.IsNotNull(di.ExpressionString);
Assert.IsNotNull(di.CSharpString);
```
### **FastExpressionCompiler.LightExpression**
- Now includes the `ExpressionVisitor`.
- Improves the compatibility (the drop-in replacement) between the `FastExpressionCompiler.LightExpression.Expression` and the `System.Linq.Expression`.
- Decreasing the memory consumed by the created expressions partially via implementing the `IArgumentProvider` and `IParameterProvider` for some expressions.
### The full list of the closed issues
[Milestone v3.0.0](https://github.com/dadhi/FastExpressionCompiler/milestone/19)
Dependencies
-
.NETFramework 4.5
- System.ValueTuple (>= 4.5.0)
-
.NETStandard 2.0
- System.Dynamic.Runtime (>= 4.3.0)
- System.Reflection.Emit.Lightweight (>= 4.7.0)
-
.NETStandard 2.1
- No dependencies.
Used By
NuGet packages (22)
Showing the top 5 NuGet packages that depend on FastExpressionCompiler:
| Package | Downloads |
|---|---|
|
Miruken
Miruken handles your application
|
|
|
ExpressionToCodeLib
Generates valid, readable C# from an expression tree, and can annotate that code with runtime values. Useful for e.g. code generation and unit testing assertions.
|
|
|
Dos.ORM
Dos.ORM（原Hxj.Data）于2009年发布、2015年正式开源，支持Core，该组件已在大量成熟项目中应用。初期开发过程中参考了NBear与MySoft，吸取了他们的一些精华，加入新思想，后期参考EF的Lambda语法进行大量扩展。官方网站：https://www.ITdos.com/Dos/ORM/Index.html，交流QQ群：60831381。
|
|
|
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
|
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TestBase
*TestBase* gives you a flying start with
- fluent assertions that are easy to extend
- sharp error messages
- tools to help you test with “heavyweight” dependencies on
- AspNetCore.Mvc, AspNet.Mvc or WebApi Contexts
- HttpClient
- Ado.Net
- Streams & Logging
- Mix & match with your favourite test runners & assertions.
```
UnitUnderTest.Action()
.ShouldNotBeNull()
.ShouldEqualByValueExceptFor(new {Id=1, Descr=expected}, ignoreList )
.Payload
.ShouldMatchIgnoringCase("I expected this")
.Should(someOtherPredicate);
.Items
.ShouldAll(predicate)
.ShouldContain(item)
.ShouldNotContain(predicate)
.Where(predicate)
.SingleOrAssertFail()
.ShouldEqualByValue().ShouldEqualByValueExceptFor(...).ShouldEqualByValueOnMembers()
work with all kinds of object and collections, and report what differed.
string.ShouldMatch(pattern).ShouldNotMatch().ShouldBeEmpty().ShouldNotBeEmpty()
.ShouldNotBeNullOrEmptyOrWhiteSpace().ShouldEqualIgnoringCase()
.ShouldContain().ShouldStartWith().ShouldEndWith().ShouldBeContainedIn(), ...
numeric.ShouldBeBetween().ShouldEqualWithTolerance()....GreaterThan....LessThan...GreaterOrEqualTo ...
ienumerable.ShouldAll().ShouldContain().ShouldNotContain().ShouldBeEmpty().ShouldNotBeEmpty() ...
stream.ShouldHaveSameStreamContentAs().ShouldContain()
value.ShouldBe().ShouldNotBe().ShouldBeOfType().ShouldBeAssignableTo()...
```
TestBase.HttpClient.Fake
```
new FakeHttpClient()
.Setup(x=>x.RequestUri.PathAndQuery.StartsWith("/this"))
.Returns(response)
.Setup(x=>x.Method==HttpMethod.Put)
.Returns(new HttpResponseMessage(HttpStatusCode.Accepted));
```
TestBase.AdoNet
------------------
`FakeDbConnection`
```
- db.SetupForQuery(…)
- db.SetupForExecuteNonQuery(…)
- db.ShouldHaveUpdated("tableName", …)
- db.ShouldHaveSelected("tableName", …)
- db.ShouldHaveDeleted("tableName", …)
- db.Verify( x=>x.CommandText.Matches("Insert [case] .*")
&& x.Parameters["id"].Value==1 )
- db
.ShouldHaveInvoked(cmd => predicate(cmd))
.ShouldHaveParameter("name", value)
```
`RecordingDbConnection`
TestBase.Mvc.AspNetCore & TestBase.Mvc for Mvc 4 & Mvc 5
--------------------------------------------------------
```
ControllerUnderTest.WithControllerContext()
.Action()
.ShouldbeViewResult()
.ShouldHaveModel<TModel>()
.ShouldEqualByValue(expected)
ControllerUnderTest.Action()
.ShouldBeRedirectToRouteResult()
.ShouldHaveRouteValue("expectedKey", [Optional] "expectedValue");
ShouldHaveViewDataContaining(), ShouldBeJsonResult() etc.
```
- Test AspNetCore controllers with zero setup using
`controllerUnderTest.WithControllerContext(actionUnderTest)`
- Test more complex AspNetCore controller/application dependencies using
`HostedMvcTestFixtureBase` and specify your MVCApplications `Startup` class.
```
[TestCase("/dummy")]
public async Task Put_Should_ReturnA(string url)
{
var httpClient=GivenClientForRunningServer<Startup>();
GivenRequestHeaders(httpClient, "CustomHeader", "HeaderValue1");
var result = await httpClient.PutAsync(url, json);
result.ShouldBe_202Accepted();
}
```
For Mvc4 and Mvc 5, fake your http request & context, and use the `RegisterRoutes` method
of your actual application to set up `Controller.Url`
```
ControllerUnderTest
.WithHttpContextAndRoutes(
RouteConfig.RegisterRoutes,
"/incomingurl"
);
ApiControllerUnderTest.WithWebApiHttpContext<T>(
httpMethod,
requestUri,
routeTemplate)
```
Testable Logging
```
// Extensions.Logging.ListOfString
var log = new List<String>();
ILogger mslogger= new LoggerFactory().AddStringListLogger(log).CreateLogger("Test2");
// Serilog.Sinks.ListOfString
Serilog.Logger slogger= new LoggerConfiguration().WriteTo.StringList(log).CreateLogger();
```
|
GitHub repositories (6)
Showing the top 5 popular GitHub repositories that depend on FastExpressionCompiler:
| Repository | Stars |
|---|---|
|
linq2db/linq2db
Linq to database provider.
|
|
|
MapsterMapper/Mapster
A fast, fun and stimulating object to object Mapper
|
|
|
microsoft/RulesEngine
A Json based Rules Engine with extensive Dynamic expression support
|
|
|
itdos/Dos.ORM
Dos.ORM于2009年发布、2015年正式开源，该组件已在数百个成熟项目中应用。初期开发过程中吸取了NBear与MySoft的一些精华并加入新思想，之后参考EF Lambda语法进行大量扩展。经过数十个版本的更新迭代发布全新v2.0版本，支持动态列/表、分库/分表等。官方网站：https://www.itdos.com/dos/orm/Index.html 交流群：60831381
|
|
|
EamonNerbonne/ExpressionToCode
Generates valid, readable C# from an Expression Tree.
|
Version History
| Version | Downloads | Last updated |
|---|---|---|
| 3.2.0 | 339 | 6/14/2021 |
| 3.1.0 | 4,916 | 5/3/2021 |
| 3.1.0-preview-03 | 58 | 5/3/2021 |
| 3.1.0-preview-02 | 81 | 5/3/2021 |
| 3.1.0-preview-01 | 73 | 5/2/2021 |
| 3.0.6-preview-01 | 72 | 4/23/2021 |
| 3.0.5 | 881 | 4/21/2021 |
| 3.0.4 | 2,049 | 4/6/2021 |
| 3.0.3 | 615 | 4/1/2021 |
| 3.0.2 | 732 | 3/30/2021 |
| 3.0.1 | 155 | 3/27/2021 |
| 3.0.0 | 967 | 3/17/2021 |
| 3.0.0-preview-07 | 3,859 | 12/25/2020 |
| 3.0.0-preview-06 | 338 | 12/1/2020 |
| 3.0.0-preview-05 | 878 | 11/27/2020 |
| 3.0.0-preview-04 | 260 | 11/3/2020 |
| 3.0.0-preview-03 | 143 | 11/2/2020 |
| 3.0.0-preview-02 | 785 | 10/23/2020 |
| 3.0.0-preview-01 | 151 | 10/23/2020 |
| 2.0.0 | 230,661 | 1/25/2019 |
| 2.0.0-preview-03 | 1,116 | 11/9/2018 |
| 2.0.0-preview-02 | 792 | 10/25/2018 |
| 2.0.0-preview-01 | 543 | 10/24/2018 |
| 1.10.1 | 26,652 | 8/8/2018 |
| 1.10.0 | 621 | 8/3/2018 |
| 1.9.0 | 1,145 | 7/24/2018 |
| 1.8.0 | 19,587 | 6/24/2018 |
| 1.7.2 | 4,230 | 6/7/2018 |
| 1.7.1 | 15,564 | 3/27/2018 |
| 1.7.0 | 6,540 | 3/17/2018 |
| 1.6.0 | 17,335 | 12/3/2017 |
| 1.5.0 | 2,428 | 11/12/2017 |
| 1.4.0 | 7,512 | 9/9/2017 |
| 1.3.0 | 910 | 8/28/2017 |
| 1.2.2 | 1,200 | 8/8/2017 |
| 1.2.1 | 805 | 8/8/2017 |
| 1.2.0 | 794 | 8/8/2017 |
| 1.1.1 | 102,784 | 7/18/2017 |
| 1.1.0 | 730 | 7/13/2017 |
| 1.0.1 | 1,411 | 5/26/2017 |
| 1.0.0 | 1,454 | 4/2/2017 |
| 1.0.0-preview-04 | 744 | 3/31/2017 |
| 1.0.0-preview-03 | 1,120 | 3/30/2017 |
| 1.0.0-preview-02 | 724 | 3/29/2017 |
| 1.0.0-preview-01 | 826 | 3/23/2017 |