[Ironruby-core] Code Review: HostingSeparation1

[Tomas Matousek]

tfpt review /shelveset:HostingSeparation1;REDMOND\tomat


DLR, HAPI, Nessie and all languages.

A step towards full HAPI/DLR separation and fixes of some inconsistencies with the spec.

Details:

Splits TokenCategorizer class into two classes: TokenizerService (language API) and TokenCategorizer (HAPI). TokenizerService is what languages implement, it could be either a base class for language tokenizers or it could delegate to the language tokenizer - that's up to the language.

Moves TokenInfo, TokenCategory, TokenTriggers out of Hosting namespace - these are shared concepts among HAPI, DLR and languages.
Moves and renames EngineTextContentProvider to Microsoft.Scripting.LanguageBoundTextContentProvider (it was an internal helper class in Hosting used from M.S.).
Removes Hosting.CodeSenseProvider - it's not used.

Removes differences from specification:

-          CompiledCode - renames, adds and remissing ones, removes CreateOptimizedScope. Adds parameter-less Execute() that executes in an optimized scope. We need to revisit optimized scopes, but this is needed for now.

-          ScriptCode - adds parameter-less Run() that executes the code in an optimized scope. Consolidates optimized scope execution from SourceUnit and CompiledCode.

-          ScriptRuntime - adds CreateScope, Operations, CreateOperations. Removes Platform and DomainManager properties, they are duplicating existing members.

-          ScriptDomainManager - makes ExecuteSourceUnit private.

-          SourceUnit, ScriptSource - removes ToString(). It was there just to display the path in debug watches, which is better done via DebuggerDispay attribute.

Fixes bug in ScriptDomainManager.LanguageRegistration.LoadLanguageContext - it wasn't thread-safe. Two different language contexts could have escaped the method.

Adds missing methods to HostingHelpers. These are supposed to be used by languages/frameworks that implement their hosting API on top of DLR HAPI.

Tomas


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