[project @ 2005-01-27 10:44:00 by simonpj]

[ghc-hetmet.git] / ghc / compiler / parser / Parser.y.pp

diff --git a/ghc/compiler/parser/Parser.y.pp b/ghc/compiler/parser/Parser.y.pp
index 8305022..01ad579 100644 (file)
--- a/ghc/compiler/parser/Parser.y.pp
+++ b/ghc/compiler/parser/Parser.y.pp
@@ -8,7 +8,8 @@
 -- ---------------------------------------------------------------------------
 
 {
-module Parser ( parseModule, parseStmt, parseIdentifier, parseIface, parseType ) where
+module Parser ( parseModule, parseStmt, parseIdentifier, parseType,
+               parseHeader ) where
 
 #define INCLUDE #include 
 INCLUDE "HsVersions.h"
@@ -274,8 +275,8 @@ TH_TY_QUOTE { L _ ITtyQuote       }      -- ''T
 %name parseModule module
 %name parseStmt   maybe_stmt
 %name parseIdentifier  identifier
-%name parseIface iface
 %name parseType ctype
+%partial parseHeader header
 %tokentype { Located Token }
 %%
 
@@ -318,36 +319,19 @@ cvtopdecls :: { [LHsDecl RdrName] }
        : topdecls                              { cvTopDecls $1 }
 
 -----------------------------------------------------------------------------
--- Interfaces (.hi-boot files)
+-- Module declaration & imports only
 
-iface   :: { ModIface }
-       : 'module' modid 'where' ifacebody  { mkBootIface (unLoc $2) $4 }
-
-ifacebody :: { [HsDecl RdrName] }
-       :  '{'            ifacedecls '}'                { $2 }
-       |      vocurly    ifacedecls close              { $2 }
-
-ifacedecls :: { [HsDecl RdrName] }
-       : ifacedecl ';' ifacedecls      { $1 : $3 }
-       | ';' ifacedecls                { $2 }
-       | ifacedecl                     { [$1] }
-       | {- empty -}                   { [] }
+header         :: { Located (HsModule RdrName) }
+       : 'module' modid maybemoddeprec maybeexports 'where' header_body
+               {% fileSrcSpan >>= \ loc ->
+                  return (L loc (HsModule (Just $2) $4 $6 [] $3)) }
+       | missing_module_keyword importdecls
+               {% fileSrcSpan >>= \ loc ->
+                  return (L loc (HsModule Nothing Nothing $2 [] Nothing)) }
 
-ifacedecl :: { HsDecl RdrName }
-       : var '::' sigtype      
-                { SigD (Sig $1 $3) }
-       | 'type' syn_hdr '=' ctype      
-               { let (tc,tvs) = $2 in TyClD (TySynonym tc tvs $4) }
-       | 'data' tycl_hdr constrs       -- No deriving in hi-boot
-               { TyClD (mkTyData DataType $2 Nothing (reverse (unLoc $3)) Nothing) }
-        | 'data' tycl_hdr 'where' gadt_constrlist      
-               { TyClD (mkTyData DataType $2 Nothing (reverse (unLoc $4)) Nothing) }
-       | 'newtype' tycl_hdr            -- Constructor is optional
-               { TyClD (mkTyData NewType $2 Nothing [] Nothing) }
-       | 'newtype' tycl_hdr '=' newconstr
-               { TyClD (mkTyData NewType $2 Nothing [$4] Nothing) }
-       | 'class' tycl_hdr fds
-               { TyClD (mkClassDecl (unLoc $2) (unLoc $3) [] emptyBag) }
+header_body :: { [LImportDecl RdrName] }
+       :  '{'            importdecls           { $2 }
+       |      vocurly    importdecls           { $2 }
 
 -----------------------------------------------------------------------------
 -- The Export List
@@ -873,6 +857,7 @@ gadt_constrlist :: { Located [LConDecl RdrName] }
 
 gadt_constrs :: { Located [LConDecl RdrName] }
         : gadt_constrs ';' gadt_constr  { LL ($3 : unLoc $1) }
+        | gadt_constrs ';'             { $1 }
         | gadt_constr                   { L1 [$1] } 
 
 gadt_constr :: { LConDecl RdrName }