* split out language service into dedicated dir

* dedicated extensions module

* trim pervasive

* rename constants

* symbols module

* typedastutils module

* FSharpChecker extensions

* rename roslyn helpers

* editor rename cleanup

* fix test renaming

* full type name in tooltip, provisional tab preferred

* more entities made navigable

* use IGoToDefinition service

* this is used only here

* MEF import FSharpGotoDefinitionService into QuickInfoProvider

* speed up gotoDefinition

* additional GotoDefn navigation strategies

* quickinfo navigation stays in its lane

tooltip from .fsi links to .fsi
tooltip from .fs links to .fs
quick navigation if no redirect is necessary

* fix unittests

* restore recursive matchingDoc

* asynchronous navigation from tooltips

* fix cross project .fs -> .fs and .fsi -> .fsi Navigation

* cleanup and extra documentation

fixed bug in cross project .fs -> .fs navigation

* missed this one

* gotodefinition sig <-> impl at declaration location

* fix async workflow

* animate status bar search and timeout on msgs

* Better links styling

* integrate sig doccoms

* fix error introduced by prior merge

* fixed invalid type access in `getUnusedOpens`

* fix invalid span bug in `symbolIsFullyQualified`

* check if normalized doccom text matches

* cleanup status bar usage

* fix underline pen position, code cleanup and formatting

* do not show links for symbol itself

do not show keywords in completion in case of error (i.e. single "<Note>" item is presented) (#2755)

* Enable sourcelink for repo

* Make it turn offable

* Somehow I deleted microbuild=true

* remove specific symbol type settings from a couple of projects

* Enable sourcelink for build

* Immutable fix

* More tweaks

can build and install new VSIX from the commandline without having the
VSSDK installed

* wip

* port Roslyn's C# completion triggering logic as is

* fixed: completion do not trigger at all

* fix position

* fix a test

* do not provide completion on certain places

* fix muting completion on Named(Wild) pat in binding

* do not provide completion on ctor / lambda parameter names + tests

* fix binding traversing in completion

* fix tests

* fix the last failing test

* wip

* wip

* fix compilation

* the list kind of works

* try to add open (fake)

* insert fake open statement

* works for dummy ns insert position

* it works (draft)

* wip

* pass proper namespace to open

* do not suggest operators

prefer already resolvable items

* fix compilation

* fix

* filter out unqualified types if there are same normal ones (UnqualifiedType (tcRef1 :: _) is equal to TType.Type_app (_, tcRef1) is tcRef1 = tcRef2)

* fix compilation

* do not open Microsoft.FSharp.xxx namespaces

add mandatory qualifier, which makes completion works for symbols like `Printf.kprintf`

* fix bugs

* wip

* wip

* Revert "wip"

This reverts commit fe3247e08fccabc00242f658282565f568eb2f3b.

* fixing bugs with RCA modules

* bug fixing

* fix filter text

* optimize completion list sorting

* code cleanup and doc

* defer getting all entities (do not get them after dot completion at all)

* fix compilation

* remove dead code

* rename RawEntity to AssemblySymbol and use FSharpSymbol instead of Item in it

* do not call getAllSymbols unless necessary (now for real)

* AssymblySymbol -> AssemblySymbol

* add completion for keywords

* order completion items by IsResolved property

* add CompletionContext.OpenDeclaration, remove IsAtOpenDeclaration ad-hoc filtering

do not show keywords at open declaration position

Fixes #2050

* parameterize config with envars, vssdk nuget

- 'RoslynVSBinariesVersion' will also set the nuget version number
- add nuget packages for VSSDK references to config

* change vssdk refs in projects to nuget packages

* envars in config files prevent proper restore, back to raw strings

* fix projectaggregator paths

* fix package compatibility issues with extern alias

* added missing references

* fix VisualStudio.Shell version conflicts with extern alias

* only use VSShell15 for ProjectSystem.Base

* build successful using all nuget VSSDK packages

* update proto package refs

* fix typo

* align package versions

* remove aliases from LanguageService.Base

unnecessary after removing reference to VisualStudio.Shell.14.0

* removed unneeded references, aligned more refs

* align netcore packages, fix json formatting

* add pkg ref for Compiler.Server.Shared build

* update Microsoft.Build packages

* use VSSDK buildtools package for F# VSIX

* custom tooltip test

* tagClass augmented

* kinda works

* getting there

* module, alias

* not sure if works

* fix build

* go away!

* parens out

* halleluyah it builds

* blank space on empty doc removed

* more sensible

* handle linked files

* collapse empty TextBlocks

* styling, simple tooltip, handle scripts

* dismiss quickinfo on navigation

* reliably dismiss quickinfo session

* interface instead of boxing

as I had to chase down where `and CompletionItem = string * string * (unit -> string) * DeclarationType` was originating from, I had to make it a single case DU to find places which would break and eventually find the source (Salsa.Privates.SimpleOpenFile.AutoCompleteAtCursorImpl); I think having it as a DU is better, and we should avoid type alias over mere tuples as finding their source is difficult.

I had to surface "nameInCode" into CompletionItem to add my test.

I added AssertCtrlSpaceCompletion taking higher order function to enable arbitrary checks on the completion lists.

* Only return VSConstants.S_OK for commands we handle.

* Remove do keyword

* port Roslyn's C# completion triggering logic as is

* fixed: completion do not trigger at all

* fix position

* fix a test

* do not provide completion on certain places

* fix muting completion on Named(Wild) pat in binding

* do not provide completion on ctor / lambda parameter names + tests

* fix binding traversing in completion

* fix tests

* fix the last failing test

* "trigger completion after a character is typed" setting in a new completion property page

* force intellisense property page loading

* do not commit completion on space in auto triggering mode

* fix completion list ordering

* Use Primary GUID when opening items from SolutionExplorer

* Declare LogicalViews our EditorFactory can handle

* fix getting type of lhr

* add a test

* fix completion items ordering

* Revert "add a test"

This reverts commit 5a57cb470aeb995cd7a4b41695c13b185f172f2c.

* rewrite items ordering, add tests

* extension methods are shown at the bottom of completion list and they don't participate in MRU hints logic

* shorter sort text

* add distinct list for priority completion items (wip)

* Revert "add distinct list for priority completion items (wip)"

This reverts commit a854f2646b682079c83841ac1cdb1595799b1197.

* it works

* smarter completion items ordering

* show type's own instance methods and properties first

* show type's own static methods and properties first

* own IL fields are shown first

* order fields, props, methods, events

refactoring

* simple MRU completion items priority

* fix tests, normalize mru items hints, refactoring

* fix priorities inside mru

* completion items glyphs take accessibility into account, proper glyph for extension members

* fix a test

* fix completion item description ordering regression

* rename GlyphMajor to FSharpGlyph and make it a union instead of enum

remove GlyphMinor
remove the old navbar and tests

* minimize diff

* make MRU list keyed by Item.FullName instead of DisplayName

fix a bug with emptyArray.max

* fixed: FullNameOfItem throws being called on Item.Types (TType.<anything but TType_app>)

* fixed again: FullNameOfItem throws being called on Item.Types (TType.<anything but TType_app>)

* fix stack overflow

* fix tests

* fix tests

* fix tests

* port rest of the code from priority-in-completion branch

* minimize diff

* fix wrong accessibility in CompletionItem

* projectContext changes on foreground thread

* does not do anything

* cosmetics

* add logging

* use TryGetOptionsForDocumentOrProject instead of TryGetOptionsForEditingDocumentOrProject in Classification Service to avoid passing stale options to FCS

* Revert "add logging"

This reverts commit 72b84216a7bdcf4be45f8ae8da7f1d31f1f0b086.

* do not suggest already opened namespaces and modules in "Add Open" code fix

* check if we can obtain symbol via GetSymbolAtLocation

* Revert "do not suggest already opened namespaces and modules in "Add Open" code fix"

This reverts commit a085f3976bac3038cca3804b247d5f71848714d2.

Conflicts:
	vsintegration/src/FSharp.Editor/CodeFix/AddOpenCodeFixProvider.fs

fixed: XmlDocReader constructor raises exception in case of malformed XML Doc, which causes no Quick Info at all (#2507)

* setup projects as soon as possible

* checker no longer used here

* mailbox added

* StartImmediate

* no async

* threadsafe ProjectInfoManager

* fix bug introduced in #2408

* setup projects after solution load

* show proper glyphs for namespaces and structures

* glyphs for literals and delegates

* fix layout for struct records and unions

* proto does not like Option.defaultValue

* show [<Struct>] in layout instead of "struct" for struct records and DUs

* show proper glyph for operators in QuickInfo

* fix test compilation

* layout `Measure` and `Struct` special attributes as types

prettier records layout

* fix a test

* Revert records layout change

* fix TypeChecker

* do not print [<Struct>] for ordinary structures

* disable completion inside comments and excluded code

refactoring

* disable normal completion inside comments and excluded code

* better include directive selection

* add signature file

* fix 2489

* another sig file

* another sig file

* error logger for GetProjectOptionsFromScript

* fix build

* fix build (2)

* show proper glyph for assemblies in completion list

* enable file system completion on fsx files only

* add #I completion

* take `#I`s into account when getting items for #r and #load

* tolerate leading spaces before hash directives

* optimization

* wip

* it kind of works

* bug fix

* remove unused code

* trigger completion on /

* everything works

* cosmetics

* Disconnect() project only after document closed

* naming

* UnusedOpensDiagnosticAnalyzer

* it works

* remove unused code

refactor

* RemoveUnusedOpens Code Fix

* fix crash on EnclosingEntity

* refactoring

* add Seq.toImmutableArray combinator

* bug fix

handle nested modules

* fixed: it does not work on attributes

remove unused opens

* dog food