Implement working GetCustomAttributes

[MateuszKlatecki]

Description

• Implements native support for a real GetCustomAttributes with "simple" attributes and also ones with constructor. Currently supporting only constructors with a single parameter and only numeric and string parameters.
• Update mscorlib declaration to follow Implement MemberInfo.GetCustomAttributesNative CoreLibrary#98.

Motivation and Context

• Bringing to the same implementation as in the standard .net.

How Has This Been Tested?

Screenshots

Types of changes

• Improvement (non-breaking change that improves a feature, code or algorithm)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Signed-off-by: Mateusz Klatecki mateusz.klatecki@gc5.pl
Signed-off-by: Jose Simoes jose.simoes@eclo.solutions

[nfbot]

Hi @MateuszKlatecki,

I'm nanoFramework bot.
Thank you for your contribution!

A human will be reviewing it shortly. 😉

[josesimoes]

I'm afraid this not possible because metadataprocessor strips out the "content" for the custom attributes. Only the attribute type is preserved and makes it to the portable executable.

For this to work it the processor would have to be changed.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[josesimoes]

Draft PR

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.