Merge pull request #1317 from dsyme/fix-1265

Fix 1265 - allowing the SOURCE_DIRECTORY token in the context of a type provider application

Author: KevinRansom

src/fsharp/LexFilter.fs

@@ -926,6 +926,7 @@ type LexFilterImpl (lightSyntaxStatus:LightSyntaxStatus, compilingFsLib, lexer,
                     | MINUS 
                     | GLOBAL 
                     | CONST
+                    | KEYWORD_STRING _
                     | NULL
                     | INT8 _ | INT16 _ | INT32 _ | INT64 _ | NATIVEINT _ 
                     | UINT8 _ | UINT16 _ | UINT32 _ | UINT64 _ | UNATIVEINT _

tests/fsharp/typecheck/sigs/neg96.bsl

@@ -1,4 +1,8 @@
 
 neg95.fs(11,9,11,21): typecheck error FS0039: The value or constructor 'StructRecord' is not defined
 
-neg96.fs(14,17,14,18): typecheck error FS3205: This feature is deprecated. A 'use' binding may not be marked 'mutable'.
+neg96.fs(14,17,14,18): typecheck error FS3205: This feature is deprecated. A 'use' binding may not be marked 'mutable'.
+
+neg96.fs(18,10,18,11): typecheck error FS0039: The type 'X' is not defined
+
+neg96.fs(18,10,18,11): typecheck error FS0039: The type 'X' is not defined

tests/fsharp/typecheck/sigs/neg96.fs

@@ -13,3 +13,7 @@ let x = StructRecord ()
 let invalidUse() = 
     use mutable x = (null : System.IDisposable)
     ()
+
+
+type T = X<__SOURCE_DIRECTORY__>
+