Addresses a blocking issue for FAR of types when used in user-code in a
directive. The FAR infrastructure is skipping over the directive code
because it's mapped to `#hidden`. As you can see in the code, the token
provided by the user is already included in the projection mappings.
I think we didn't do this before because we didn't expect this code to
need line numbers - it's not really debuggable, and design-time codegen
doesn't happen when you build the project.
I think it's OK for now that we don't line-map (or include) directives
based on view imports. If you trigger FAR on an `@inject ...` in an
import for instance, you'll find the reference for the view import file.
That seems pretty good, and the only cases I can really imagine it being
broken would be for go-to-definition (within a Razor view). Lets revisit
in the future based on feedback.
We don't really want to ship what we have as a contract. As an emergency
measure we are making it into internal extension methods so we can have
a do-over in 2.1.
- Rename `CSharpRenderingContext` => `CodeRenderingContext`.
- Rename `CSharpCodeWriter` => `CodeWriter`
- Rename `BasicWriter` => `IntermediateNodeWriter`
- Rename `...BasicWriter` => `...NodeWriter`
- Made `CodeRenderingContext` a public abstract API. Left temporary TagHelper pieces in the class since these will be removed soon.
- Moved several `CodeRenderingContext` methods into extension methods. These make use of the Items collection.
- Moved the reporting of missing code target extensions into the `ExtensionIntermediateNode`. This is the integration point of `CodeTarget`s and `CodeRenderingContext`s; therefore, it made more sense existing there.
- Left SetRenderChildren/SetRenderNode as extension methods due to how they're wired up. Aka, to create a `CodeTarget` you need a `CodeRenderingContext`... To Create a `DocumentWriter` you need a `CodeTarget`... To set the render methods on the context you need a `DocumentWriter`.
- Updated tests to utilize the new code renering constructs.
- Moved code generation testability features from `CSharpLoweringPhase` to the `CodeRenderingContext.Items`.
#1043