* 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

* 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

* 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

* 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

* 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

* add signature file

* fix 2489

* another sig file

* another sig file

* error logger for GetProjectOptionsFromScript

* fix build

* fix build (2)

* 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

also `<-` as keyword

* add validation to InlineRenameService

* address review

Turn off closed files diagnostic analysis & fix creating IncrementalBuilder when a file opens (#2395)

* turn off closed files diagnostic analysis

use predefined BlockForCompletionItems option instead of hand made one

* fixed: IncrementalBuilder is created every time a file in project opened / reopened

* filter out uninterested Items earlier during syntax highlighting

* remove classification span filtering as unneeded

* fix a typo

* CommonHelpers.getSymbolFromTokens returns full long ident island which is passed to FCS

* fixed: QuickInfo is not shown for trailing ^ operator

fixed: QuickInfo is shown when cursor is beyond symbol at one column to the right

* fix QuickInfoProvider test

* wip

* adjust color when color theme changes

* highlight mutable record / struct fields

* remove theme changing listener

* fix typo in a test

* address code review

* black color for functions by default

* try to fix false range for get, set auto properties

* use TryGetRecentCheckResultsForFile to get potentially stale file check results

* wip

* make GetDeclarationListInfo "threadSafeOp" instead of "reactorOp"

* make QuickInfo description and signature help synchronous

* Revert "make QuickInfo description and signature help synchronous"

This reverts commit 2f0ad0f39399bb380a4d7a12088549d440f137e9.

* remove reactor ops from FSharpFileCheckResults

* reduce incrementalTypeCheckCacheSize from 5 to 3

refactoring

* Revert "remove reactor ops from FSharpFileCheckResults"

This reverts commit c06858190ddc540bad0bf2a995c5cb133b0f8ec6.

* use incremental file checking

* revert last bits to reactor

* refactor CompletionProvider

* TypeCheckOneFile works incrementally, processing Eventually with Reactor bit-by-bit

* combine CheckOneFile reactor ops into 50 ms slices approx

* pass allowStaleResults explicitly

* make ParseAndCheckInteraction async

* remove CancellationToken from repeatedlyProgressUntilDoneOrTimeShareOver(OrCanceled)

remove explicit CancellationToken from forceAsync

* FSharpChecker.ParseAndCheckDocument tries to get fresh check results for 2 seconds, then uses stale ones, if the caller permits it, then continue waiting for fresh ones, if there is no stale results

* revert cancellation token to repeatedlyProgressUntilDoneOrTimeShareOverOrCanceled

* fix the semaphore

* use Async.StartChild with timeout, which is automatically cancelled by timeout

* refactor ParseAndCheckDocument

* store TcResolutions.CapturedEnvs indexed by line

* remove unnecessary execWithReactorAsync for methods already protected with BackgroundCompiler.locked

* add beingCheckedFileCache

* fix Logging crash in tests

* extract CheckOneFile

* Revert "store TcResolutions.CapturedEnvs indexed by line"

This reverts commit 30c9bcffb73713ad6973f8a64bf196b3a92303c6.

* remove logging

* spin faster

* address code review

* add "VFT_GetFreshFileCheckResultsTimeoutMillis" environment variable to control how much we wait for fresh file type check results until falling to use cached ones

* proper Equals for beingCheckedFileTable

* fixed: CheckFileInProjectIfReady does not call ImplicitlyStartCheckProjectInBackground no matter what, as before

* remove unused parameter from tryGetFreshResultsWithTimeout

* remove logging

* add RemoveQualificationDiagnosticAnalyzer skeleton

* diagnose all symbols as unnecessary

* exclude symbol uses from definition

* add GetVisibleNamespacesAndModulesAtPoint

* return ModuleOrNamespaceRef directly

* call GetVisibleNamespacesAndModulesAtPoint in the analyzer

* the analyzer works

* add Code Fix

* remove plid from code fix title

* use SymbolUse.Symbol.Item to check if it can be resolved

* it works

* fix many bugs

* Fix resources

* fixed: the diagnostic is not returned for single-part plid

* Show that union ranges are broken - references #2231

* fix test

* Make it the last char

* Fix roslyn boundings

* Setup F# projects after opening a solution

* Use built-in SolutionEvents instead of rolling our own version

* Refactor

* Find references should pick up correct referenced projects

* Setup projects in batch on the background

* revert "Use Roslyn line numbers only in lexer cache" #2090

* fix OutOfRangeException in getCachedSourceLineData

* fixed: lexer cache does not work at all

* fix finding start line for relexing in getCachedSourceLineData

* add glyph to Quick Info tooltip

* fix tests compilation

* use Layout as a source data of classification related tasks

* fix indentation

* parse xml doc by hand instead of relying on VS service

* revert back old API

* fix portable build

* fix output in FSI

* fix printing of operators

* update Surface test

* internalize new types and modules

* tag module/namespace as keywords

* fix tooltip formatting for types with hidden representation

* fix separator placement

* remove duplicated navigation bar items for properties with getters and setters

* fix glyphs for class let bindings

* better navigation bar glyphs

* fix accessibility for members and let bindings

* fix Language and Product names in F1 help context

* make "FSharp" a common constant

* use asyncMaybe everywhere

* fix compilation

* continue the refactoring

* finish the refactoring

* fixed: AsyncMaybe.Delay was not lazy

* fix tests

* use Roslyn line numbers only in lexer cache

* fix and refactor getSymbolAtPosition

* fix after merge

* fix out of range exn

* enable Roslyn's non blocking code complete

update Microsoft.CodeAnalysis.xxx packages to version 2.0.0-rc3-61225-01

* roll back to Microsoft.CodyAnalysis.xxx RC2 nuget packages

* Propose Uppercase for FS0053

* make ProposeUppercaseLabel code fix work on all symbol uses

* cleanup

* refactor with asyncMaybe

* add ParseAndCheckDocument

* refactor ProposeUppercaseLabel

* Create InterfaceStubGenerator service

* Add a prototype of ImplementInterface code fix

* Fix indentation calculation

* Support both interface declarations and object expressions

* Handle already implemented members

* Localize lightbulb text

* Rename labels