Update DynamicGetMemberBinder to only add BindingRestrictions for dynamic type and cache the DynamicMetaObject

[StefH]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the dynamic member binding behavior to improve performance by only adding BindingRestrictions for dynamic types and caching the resulting DynamicMetaObject. It also adds a new console performance test project to benchmark these changes.

• Added a caching mechanism using ConcurrentDictionary in DynamicGetMemberBinder.
• Updated FallbackGetMember to conditionally add type restrictions for dynamic objects.
• Introduced a new performance test project (ConsoleAppPerformanceTest) to measure the impact.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/System.Linq.Dynamic.Core/DynamicGetMemberBinder.cs	Implements caching of DynamicMetaObject and conditionally adds type restrictions.
src-console/ConsoleAppPerformanceTest/Program.cs	Introduces performance tests for dynamic binding queries.
src-console/ConsoleAppPerformanceTest/ConsoleAppPerformanceTest.csproj	New project file set for performance tests using .NET Framework 4.8 and C#12.
System.Linq.Dynamic.Core.sln	Updates solution to include the new ConsoleAppPerformanceTest project.

Comments suppressed due to low confidence (1)

src-console/ConsoleAppPerformanceTest/Program.cs:23

• [nitpick] The alias 'Idee' in the dynamic projection might be a typographical error. If this naming is intentional, consider adding a comment to clarify its purpose.

_ = query.AsQueryable().Select("new { it.ID as Idee } ").ToDynamicList();

[Copilot]

Pull Request Overview

This PR updates the DynamicGetMemberBinder to improve performance by caching DynamicMetaObjects for dynamic types and by adding BindingRestrictions only for these types. Key changes include:

• Introducing a ConcurrentDictionary cache for dynamic meta objects.
• Changing the constructor visibility to internal.
• Adding a dedicated performance test project to measure improvements.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/System.Linq.Dynamic.Core/DynamicGetMemberBinder.cs	Added caching of DynamicMetaObjects and updated constructor visibility
src-console/ConsoleAppPerformanceTest/Program.cs	Added performance testing for dynamic queries
src-console/ConsoleAppPerformanceTest/ConsoleAppPerformanceTest.csproj	Configured project settings for .NET Framework and C# 12
System.Linq.Dynamic.Core.sln	Updated solution file to include the new test project

Comments suppressed due to low confidence (1)

src/System.Linq.Dynamic.Core/DynamicGetMemberBinder.cs:20

• Ensure that changing the constructor visibility from public to internal aligns with the intended usage of DynamicGetMemberBinder and that any dependent external code is updated accordingly or documented.

internal DynamicGetMemberBinder(string name, ParsingConfig? config) : base(name, config?.IsCaseSensitive != true)