%%
-----------------------------------------------------------------------------
+-- Identifiers; one of the entry points
+identifier :: { Located RdrName }
+ : qvar { $1 }
+ | qcon { $1 }
+ | qvarop { $1 }
+ | qconop { $1 }
+
+-----------------------------------------------------------------------------
-- Module Header
-- The place for module deprecation is really too restrictive, but if it
qcname :: { Located RdrName } -- Variable or data constructor
: qvar { $1 }
- | gcon { $1 }
+ | qcon { $1 }
-----------------------------------------------------------------------------
-- Import Declarations
: 'where' decllist { LL (unLoc $2) }
| {- empty -} { noLoc nilOL }
-binds :: { Located [HsBindGroup RdrName] } -- May have implicit parameters
- : decllist { L1 [cvBindGroup (unLoc $1)] }
- | '{' dbinds '}' { LL [HsIPBinds (unLoc $2)] }
- | vocurly dbinds close { L (getLoc $2) [HsIPBinds (unLoc $2)] }
+binds :: { Located (HsLocalBinds RdrName) } -- May have implicit parameters
+ : decllist { L1 (HsValBinds (cvBindGroup (unLoc $1))) }
+ | '{' dbinds '}' { LL (HsIPBinds (IPBinds (unLoc $2) emptyLHsBinds)) }
+ | vocurly dbinds close { L (getLoc $2) (HsIPBinds (IPBinds (unLoc $2) emptyLHsBinds)) }
-wherebinds :: { Located [HsBindGroup RdrName] } -- May have implicit parameters
+wherebinds :: { Located (HsLocalBinds RdrName) } -- May have implicit parameters
: 'where' binds { LL (unLoc $2) }
- | {- empty -} { noLoc [] }
+ | {- empty -} { noLoc emptyLocalBinds }
-----------------------------------------------------------------------------
| gadt_constr { L1 [$1] }
gadt_constr :: { LConDecl RdrName }
- : qcon '::' sigtype
+ : con '::' sigtype
{ LL (GadtDecl $1 $3) }
constrs :: { Located [LConDecl RdrName] }
| gdrh { L1 [$1] }
gdrh :: { LGRHS RdrName }
- : '|' quals '=' exp { LL $ GRHS (reverse (L (getLoc $4) (ResultStmt $4) :
- unLoc $2)) }
+ : '|' quals '=' exp { sL (comb2 $1 $>) $ GRHS (reverse (unLoc $2)) $4 }
sigdecl :: { Located (OrdList (LHsDecl RdrName)) }
: infixexp '::' sigtype
: '\\' aexp aexps opt_asig '->' exp
{% checkPatterns ($2 : reverse $3) >>= \ ps ->
return (LL $ HsLam (mkMatchGroup [LL $ Match ps $4
- (GRHSs (unguardedRHS $6) []
+ (GRHSs (unguardedRHS $6) emptyLocalBinds
)])) }
| 'let' binds 'in' exp { LL $ HsLet (unLoc $2) $4 }
| 'if' exp 'then' exp 'else' exp { LL $ HsIf $2 $4 $6 }
| '-' fexp { LL $ mkHsNegApp $2 }
| 'do' stmtlist {% let loc = comb2 $1 $2 in
- checkDo loc (unLoc $2) >>= \ stmts ->
- return (L loc (mkHsDo DoExpr stmts)) }
+ checkDo loc (unLoc $2) >>= \ (stmts,body) ->
+ return (L loc (mkHsDo DoExpr stmts body)) }
| 'mdo' stmtlist {% let loc = comb2 $1 $2 in
- checkMDo loc (unLoc $2) >>= \ stmts ->
- return (L loc (mkHsDo MDoExpr stmts)) }
-
+ checkDo loc (unLoc $2) >>= \ (stmts,body) ->
+ return (L loc (mkHsDo (MDoExpr noPostTcTable) stmts body)) }
| scc_annot exp { LL $ if opt_SccProfilingOn
then HsSCC (unLoc $1) $2
else HsPar $2 }
| '$(' exp ')' { LL $ HsSpliceE (mkHsSplice $2) } -- $( exp )
| TH_VAR_QUOTE qvar { LL $ HsBracket (VarBr (unLoc $2)) }
- | TH_VAR_QUOTE gcon { LL $ HsBracket (VarBr (unLoc $2)) }
+ | TH_VAR_QUOTE qcon { LL $ HsBracket (VarBr (unLoc $2)) }
| TH_TY_QUOTE tyvar { LL $ HsBracket (VarBr (unLoc $2)) }
| TH_TY_QUOTE gtycon { LL $ HsBracket (VarBr (unLoc $2)) }
| '[|' exp '|]' { LL $ HsBracket (ExpBr $2) }
list :: { LHsExpr RdrName }
: exp { L1 $ ExplicitList placeHolderType [$1] }
| lexps { L1 $ ExplicitList placeHolderType (reverse (unLoc $1)) }
- | exp '..' { LL $ ArithSeqIn (From $1) }
- | exp ',' exp '..' { LL $ ArithSeqIn (FromThen $1 $3) }
- | exp '..' exp { LL $ ArithSeqIn (FromTo $1 $3) }
- | exp ',' exp '..' exp { LL $ ArithSeqIn (FromThenTo $1 $3 $5) }
- | exp pquals { LL $ mkHsDo ListComp
- (reverse (L (getLoc $1) (ResultStmt $1) :
- unLoc $2)) }
+ | exp '..' { LL $ ArithSeq noPostTcExpr (From $1) }
+ | exp ',' exp '..' { LL $ ArithSeq noPostTcExpr (FromThen $1 $3) }
+ | exp '..' exp { LL $ ArithSeq noPostTcExpr (FromTo $1 $3) }
+ | exp ',' exp '..' exp { LL $ ArithSeq noPostTcExpr (FromThenTo $1 $3 $5) }
+ | exp pquals { sL (comb2 $1 $>) $ mkHsDo ListComp (reverse (unLoc $2)) $1 }
lexps :: { Located [LHsExpr RdrName] }
: lexps ',' exp { LL ($3 : unLoc $1) }
| exp { L1 $ ExplicitPArr placeHolderType [$1] }
| lexps { L1 $ ExplicitPArr placeHolderType
(reverse (unLoc $1)) }
- | exp '..' exp { LL $ PArrSeqIn (FromTo $1 $3) }
- | exp ',' exp '..' exp { LL $ PArrSeqIn (FromThenTo $1 $3 $5) }
- | exp pquals { LL $ mkHsDo PArrComp
- (reverse (L (getLoc $1) (ResultStmt $1) :
- unLoc $2))
- }
+ | exp '..' exp { LL $ PArrSeq noPostTcExpr (FromTo $1 $3) }
+ | exp ',' exp '..' exp { LL $ PArrSeq noPostTcExpr (FromThenTo $1 $3 $5) }
+ | exp pquals { sL (comb2 $1 $>) $ mkHsDo PArrComp (reverse (unLoc $2)) $1 }
-- We are reusing `lexps' and `pquals' from the list case.
| gdpat { L1 [$1] }
gdpat :: { LGRHS RdrName }
- : '|' quals '->' exp { let r = L (getLoc $4) (ResultStmt $4)
- in LL $ GRHS (reverse (r : unLoc $2)) }
+ : '|' quals '->' exp { sL (comb2 $1 $>) $ GRHS (reverse (unLoc $2)) $4 }
-----------------------------------------------------------------------------
-- Statement sequences
| vocurly stmts close { $2 }
-- do { ;; s ; s ; ; s ;; }
--- The last Stmt should be a ResultStmt, but that's hard to enforce
+-- The last Stmt should be an expression, but that's hard to enforce
-- here, because we need too much lookahead if we see do { e ; }
-- So we use ExprStmts throughout, and switch the last one over
-- in ParseUtils.checkDo instead
stmt :: { LStmt RdrName }
: qual { $1 }
| infixexp '->' exp {% checkPattern $3 >>= \p ->
- return (LL $ BindStmt p $1) }
- | 'rec' stmtlist { LL $ RecStmt (unLoc $2) undefined undefined undefined }
+ return (LL $ mkBindStmt p $1) }
+ | 'rec' stmtlist { LL $ mkRecStmt (unLoc $2) }
qual :: { LStmt RdrName }
: infixexp '<-' exp {% checkPattern $1 >>= \p ->
- return (LL $ BindStmt p $3) }
- | exp { L1 $ ExprStmt $1 placeHolderType }
+ return (LL $ mkBindStmt p $3) }
+ | exp { L1 $ mkExprStmt $1 }
| 'let' binds { LL $ LetStmt (unLoc $2) }
-----------------------------------------------------------------------------
dbind :: { LIPBind RdrName }
dbind : ipvar '=' exp { LL (IPBind (unLoc $1) $3) }
------------------------------------------------------------------------------
--- Variables, Constructors and Operators.
+ipvar :: { Located (IPName RdrName) }
+ : IPDUPVARID { L1 (Dupable (mkUnqual varName (getIPDUPVARID $1))) }
+ | IPSPLITVARID { L1 (Linear (mkUnqual varName (getIPSPLITVARID $1))) }
-identifier :: { Located RdrName }
- : qvar { $1 }
- | gcon { $1 }
- | qvarop { $1 }
- | qconop { $1 }
+-----------------------------------------------------------------------------
+-- Deprecations
depreclist :: { Located [RdrName] }
depreclist : deprec_var { L1 [unLoc $1] }
deprec_var :: { Located RdrName }
deprec_var : var { $1 }
- | tycon { $1 }
-
-gcon :: { Located RdrName } -- Data constructor namespace
- : sysdcon { L1 $ nameRdrName (dataConName (unLoc $1)) }
- | qcon { $1 }
--- the case of '[:' ':]' is part of the production `parr'
-
-sysdcon :: { Located DataCon } -- Wired in data constructors
- : '(' ')' { LL unitDataCon }
- | '(' commas ')' { LL $ tupleCon Boxed $2 }
- | '[' ']' { LL nilDataCon }
-
-var :: { Located RdrName }
- : varid { $1 }
- | '(' varsym ')' { LL (unLoc $2) }
-
-qvar :: { Located RdrName }
- : qvarid { $1 }
- | '(' varsym ')' { LL (unLoc $2) }
- | '(' qvarsym1 ')' { LL (unLoc $2) }
--- We've inlined qvarsym here so that the decision about
--- whether it's a qvar or a var can be postponed until
--- *after* we see the close paren.
-
-ipvar :: { Located (IPName RdrName) }
- : IPDUPVARID { L1 (Dupable (mkUnqual varName (getIPDUPVARID $1))) }
- | IPSPLITVARID { L1 (Linear (mkUnqual varName (getIPSPLITVARID $1))) }
+ | con { $1 }
+-----------------------------------------
+-- Data constructors
qcon :: { Located RdrName }
: qconid { $1 }
| '(' qconsym ')' { LL (unLoc $2) }
+ | sysdcon { L1 $ nameRdrName (dataConName (unLoc $1)) }
+-- The case of '[:' ':]' is part of the production `parr'
-varop :: { Located RdrName }
- : varsym { $1 }
- | '`' varid '`' { LL (unLoc $2) }
-
-qvarop :: { Located RdrName }
- : qvarsym { $1 }
- | '`' qvarid '`' { LL (unLoc $2) }
+con :: { Located RdrName }
+ : conid { $1 }
+ | '(' consym ')' { LL (unLoc $2) }
+ | sysdcon { L1 $ nameRdrName (dataConName (unLoc $1)) }
-qvaropm :: { Located RdrName }
- : qvarsym_no_minus { $1 }
- | '`' qvarid '`' { LL (unLoc $2) }
+sysdcon :: { Located DataCon } -- Wired in data constructors
+ : '(' ')' { LL unitDataCon }
+ | '(' commas ')' { LL $ tupleCon Boxed $2 }
+ | '[' ']' { LL nilDataCon }
conop :: { Located RdrName }
: consym { $1 }
: CONSYM { L1 $! mkUnqual tcClsName (getCONSYM $1) }
-----------------------------------------------------------------------------
--- Any operator
+-- Operators
op :: { Located RdrName } -- used in infix decls
: varop { $1 }
| conop { $1 }
+varop :: { Located RdrName }
+ : varsym { $1 }
+ | '`' varid '`' { LL (unLoc $2) }
+
qop :: { LHsExpr RdrName } -- used in sections
: qvarop { L1 $ HsVar (unLoc $1) }
| qconop { L1 $ HsVar (unLoc $1) }
: qvaropm { L1 $ HsVar (unLoc $1) }
| qconop { L1 $ HsVar (unLoc $1) }
------------------------------------------------------------------------------
--- VarIds
-
-qvarid :: { Located RdrName }
- : varid { $1 }
- | QVARID { L1 $ mkQual varName (getQVARID $1) }
+qvarop :: { Located RdrName }
+ : qvarsym { $1 }
+ | '`' qvarid '`' { LL (unLoc $2) }
-varid :: { Located RdrName }
- : varid_no_unsafe { $1 }
- | 'unsafe' { L1 $! mkUnqual varName FSLIT("unsafe") }
- | 'safe' { L1 $! mkUnqual varName FSLIT("safe") }
- | 'threadsafe' { L1 $! mkUnqual varName FSLIT("threadsafe") }
+qvaropm :: { Located RdrName }
+ : qvarsym_no_minus { $1 }
+ | '`' qvarid '`' { LL (unLoc $2) }
-varid_no_unsafe :: { Located RdrName }
- : VARID { L1 $! mkUnqual varName (getVARID $1) }
- | special_id { L1 $! mkUnqual varName (unLoc $1) }
- | 'forall' { L1 $! mkUnqual varName FSLIT("forall") }
+-----------------------------------------------------------------------------
+-- Type variables
tyvar :: { Located RdrName }
tyvar : tyvarid { $1 }
-- or "*", because that's used for kinds
tyvarsym : VARSYM { L1 $! mkUnqual tvName (getVARSYM $1) }
--- These special_ids are treated as keywords in various places,
--- but as ordinary ids elsewhere. 'special_id' collects all these
--- except 'unsafe' and 'forall' whose treatment differs depending on context
-special_id :: { Located UserFS }
-special_id
- : 'as' { L1 FSLIT("as") }
- | 'qualified' { L1 FSLIT("qualified") }
- | 'hiding' { L1 FSLIT("hiding") }
- | 'export' { L1 FSLIT("export") }
- | 'label' { L1 FSLIT("label") }
- | 'dynamic' { L1 FSLIT("dynamic") }
- | 'stdcall' { L1 FSLIT("stdcall") }
- | 'ccall' { L1 FSLIT("ccall") }
-
-----------------------------------------------------------------------------
-- Variables
+var :: { Located RdrName }
+ : varid { $1 }
+ | '(' varsym ')' { LL (unLoc $2) }
+
+qvar :: { Located RdrName }
+ : qvarid { $1 }
+ | '(' varsym ')' { LL (unLoc $2) }
+ | '(' qvarsym1 ')' { LL (unLoc $2) }
+-- We've inlined qvarsym here so that the decision about
+-- whether it's a qvar or a var can be postponed until
+-- *after* we see the close paren.
+
+qvarid :: { Located RdrName }
+ : varid { $1 }
+ | QVARID { L1 $ mkQual varName (getQVARID $1) }
+
+varid :: { Located RdrName }
+ : varid_no_unsafe { $1 }
+ | 'unsafe' { L1 $! mkUnqual varName FSLIT("unsafe") }
+ | 'safe' { L1 $! mkUnqual varName FSLIT("safe") }
+ | 'threadsafe' { L1 $! mkUnqual varName FSLIT("threadsafe") }
+
+varid_no_unsafe :: { Located RdrName }
+ : VARID { L1 $! mkUnqual varName (getVARID $1) }
+ | special_id { L1 $! mkUnqual varName (unLoc $1) }
+ | 'forall' { L1 $! mkUnqual varName FSLIT("forall") }
+
qvarsym :: { Located RdrName }
: varsym { $1 }
| qvarsym1 { $1 }
| special_sym { L1 $ mkUnqual varName (unLoc $1) }
--- See comments with special_id
+-- These special_ids are treated as keywords in various places,
+-- but as ordinary ids elsewhere. 'special_id' collects all these
+-- except 'unsafe' and 'forall' whose treatment differs depending on context
+special_id :: { Located UserFS }
+special_id
+ : 'as' { L1 FSLIT("as") }
+ | 'qualified' { L1 FSLIT("qualified") }
+ | 'hiding' { L1 FSLIT("hiding") }
+ | 'export' { L1 FSLIT("export") }
+ | 'label' { L1 FSLIT("label") }
+ | 'dynamic' { L1 FSLIT("dynamic") }
+ | 'stdcall' { L1 FSLIT("stdcall") }
+ | 'ccall' { L1 FSLIT("ccall") }
+
special_sym :: { Located UserFS }
special_sym : '!' { L1 FSLIT("!") }
| '.' { L1 FSLIT(".") }
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