From: sof <unknown>
Date: Sun, 19 Oct 1997 21:46:33 +0000 (+0000)
Subject: [project @ 1997-10-19 21:46:33 by sof]
X-Git-Tag: Approx_2487_patches~1354
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=597e10f9edca4794f0ea310b3b1fe0e249d99564;p=ghc-hetmet.git

[project @ 1997-10-19 21:46:33 by sof]
Added comment on special parser handling of non-qualified gtycons
---

diff --git a/ghc/compiler/parser/id.c b/ghc/compiler/parser/id.c
index 173f38d..04228be 100644
--- a/ghc/compiler/parser/id.c
+++ b/ghc/compiler/parser/id.c
@@ -273,6 +273,21 @@ qid_to_pmod(q)
   return mod;
 }
 
+/* Darkly mysterious function used to construct "special-syntax"
+   identifiers.  These mean their prelude versions regardless of
+   context, which is why they are distinguished.  
+
+   We build a gid node (rather than a qual or non-qual name node;
+   look at qid.ugn) with a key (number) and a string.  Here's the 
+   deal
+
+		key
+		-2	function arrow ->
+		-1	list type constructor [], or the empty list []
+		0	unit type constructor (), or the unity value ()
+		n	n-tuple type constructor (,,,)
+*/
+		
 qid
 creategid(i)
   long i;