maps nkNilLit to nil tag (#1503)

Maps `nkNilLit` to `nil` tag and maps `mNil` to `nilm` tag so that they
don't conflict.
Generated `enum2nif.nim` is used in
nim-lang/Nim#25201.

Author: demotomohiro

src/gear2/enum2nif.nim

@@ -1,4 +1,4 @@
-# Generated by enumgen.nim. DO NOT EDIT!
+# Generated by gear2/generator/enumgen.nim in Nimony repo. DO NOT EDIT!
 
 import compiler / [ast, options]
 
@@ -27,7 +27,7 @@ proc toNifTag*(s: TNodeKind): string =
   of nkStrLit: "strlit"
   of nkRStrLit: "rstrlit"
   of nkTripleStrLit: "triplestrlit"
-  of nkNilLit: "nillit"
+  of nkNilLit: "nil"
   of nkComesFrom: "comesfrom"
   of nkDotCall: "dotcall"
   of nkCommand: "cmd"
@@ -197,7 +197,7 @@ proc parseNodeKind*(s: string): TNodeKind =
   of "strlit": nkStrLit
   of "rstrlit": nkRStrLit
   of "triplestrlit": nkTripleStrLit
-  of "nillit": nkNilLit
+  of "nil": nkNilLit
   of "comesfrom": nkComesFrom
   of "dotcall": nkDotCall
   of "cmd": nkCommand
@@ -744,6 +744,7 @@ proc toNifTag*(s: TMagic): string =
   of mExit: "exit"
   of mSetLengthStr: "setlenstr"
   of mSetLengthSeq: "setlenseq"
+  of mSetLengthSeqUninit: "setlensequninit"
   of mIsPartOf: "ispartof"
   of mAstToStr: "asttostr"
   of mParallel: "parallel"
@@ -799,7 +800,7 @@ proc toNifTag*(s: TMagic): string =
   of mString: "string"
   of mCstring: "cstring"
   of mPointer: "pointer"
-  of mNil: "nil"
+  of mNil: "nilm"
   of mExpr: "exprm"
   of mStmt: "stmtm"
   of mTypeDesc: "typedesc"
@@ -1025,6 +1026,7 @@ proc parseMagic*(s: string): TMagic =
   of "exit": mExit
   of "setlenstr": mSetLengthStr
   of "setlenseq": mSetLengthSeq
+  of "setlensequninit": mSetLengthSeqUninit
   of "ispartof": mIsPartOf
   of "asttostr": mAstToStr
   of "parallel": mParallel
@@ -1080,7 +1082,7 @@ proc parseMagic*(s: string): TMagic =
   of "string": mString
   of "cstring": mCstring
   of "pointer": mPointer
-  of "nil": mNil
+  of "nilm": mNil
   of "exprm": mExpr
   of "stmtm": mStmt
   of "typedesc": mTypeDesc

src/gear2/generator/enumgen.nim

@@ -39,6 +39,7 @@ const
     ("nkBreakStmt", "brk"),
     ("nkStmtListExpr", "expr"),
     ("nkEnumFieldDef", "efld"),
+    ("nkNilLit", "nil"),
     ("ccNoConvention", "noconv"),
     ("mExpr", "exprm"),
     ("mStmt", "stmtm"),
@@ -53,6 +54,7 @@ const
     ("mRange", "rangem"),
     ("mVar", "varm"),
     ("mInSet", "contains"),
+    ("mNil", "nilm"),
     ("tyBuiltInTypeClass", "bconcept"),
     ("tyUserTypeClass", "uconcept"),
     ("tyUserTypeClassInst", "uconceptinst"),
@@ -222,7 +224,7 @@ proc genFlags[E](f: var File; enumName: string; prefixLen = 2) =
   f.write code
 
 var f = open("src/gear2/enum2nif.nim", fmWrite)
-f.write "# Generated by enumgen.nim. DO NOT EDIT!\n\n"
+f.write "# Generated by gear2/generator/enumgen.nim in Nimony repo. DO NOT EDIT!\n\n"
 f.write "import compiler / [ast, options]\n\n"
 # use the same mapping for TNodeKind and TMagic so that we can detect conflicts!
 var nodeTags = initOrderedTable[string, bool]()