- We need to pre-emptively generate line pragmas to handle C# scenarios which are session based. For instance, if a C# completion session starts at a location without a pragma they capture the origination point; at which point if a user keeps typing we generate a line pragma drastically changing where the copmletion started resulting in a broken C# completion experience.
- Updated test files to reflect new behavior.
#2299
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