Skip to content

Update lexical-analysis.md keywords for current F# syntax #62

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 1 commit into from
Closed

Update lexical-analysis.md keywords for current F# syntax #62

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
32 changes: 26 additions & 6 deletions spec/lexical-analysis.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -146,8 +146,8 @@ The following identifiers are treated as keywords of the F# language:

```fsgrammar
token ident-keyword =
abstract and as assert base begin class default delegate do done
downcast downto elif else end exception extern false finally for
abstract and as assert base begin const class default delegate do done
downcast downto elif else end exception extern false finally fixed for
fun function global if in inherit inline interface internal lazy let
match member module mutable namespace new null of open or
override private public rec return sig static struct then to
Expand All @@ -158,14 +158,33 @@ The following identifiers are reserved for future use:

```fsgrammar
token reserved-ident-keyword =
atomic break checked component const constraint constructor
continue eager fixed fori functor include
measure method mixin object parallel params process protected pure
recursive sealed tailcall trait virtual volatile
break checked component const constraint
continue fori include
mixin parallel params process protected pure
sealed tailcall trait virtual
```

A future revision of the F# language may promote any of these identifiers to be full keywords.

The following identifiers were previously reserved but can now be used:

```fsgrammar
token ident =
atomic constructor eager functor measure method
object recursive volatile
```

The following tokens are reserved in F# because they are keywords in the OCaml language:

```fsgrammar
token reserved-or-ident =
asr land lor lsl lsr lxor
```

If you use the `--mlcompatibility` compiler option, the above keywords are available for use as identifiers.

The `mod` identifier is treated specially as an infix operator.

The following token forms are reserved, except when they are part of a symbolic keyword ([§](lexical-analysis.md#symbolic-keywords)).

```fsgrammar
Expand Down Expand Up @@ -302,6 +321,7 @@ The following symbolic or partially symbolic character sequences are treated as
```fsgrammar
token symbolic-keyword =
let! use! do! yield! return!
match! and!
| -> <-. : ( ) [ ] [< >] [| |] { }
' # :?> :? :> .. :: := ;; ; =
_? ?? (*) <@ @> <@@ @@>
Expand Down