DamianEdwards/LargeRazorStringLiterals

Investigation related to issue dotnet/aspnetcore#21787

Large Razor String Literals Issue

Investigation related to dotnet/aspnetcore#21787 Error CS8103 Combined length of user strings used by the program exceeds allowed limit. Try to decrease use of string literals.

Pre-reqs

• .NET 7.0.100-rc.1.* SDK (download from the installer repo)

To reproduce issue

In repo root:

1. Run script Generate-Pages.ps1
2. Run dotnet build

Experimental workaround using C# 11 Utf8 string literals

This repro includes an experiment using C# 11 Utf8 string literals to workaround the literal limit by using a custom Razor page base class that includes a method WriteUtf8Literal(ReadOnlySpan<byte> buffer) that can be used to write literals out from their Utf8 byte literals rather than string literals. Updating the Razor compiler to support this natively for all literals might have a number of advantages.

1. Run script Delete-Pages.ps1 in repo root

2. Uncomment lines 5 and 7 in LargeRazorStringLiterals/Pages/Generated/PageTemplate.cshtml around the template placeholder:\

   5  @WriteUtf8Literal(@"
   6  ***CONTENT HERE***
   7  "u8);

3. Run script Generate-Pages.ps1 in repo root

4. Run dotnet build in repo root