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-- This Happy file was machine-generated by the BNF converter
{
{-# OPTIONS -fno-warn-incomplete-patterns -fno-warn-overlapping-patterns #-}
module GFCC.Par where
import GFCC.Abs
import GFCC.Lex
import GFCC.ErrM
}
%name pGrammar Grammar
%name pHeader Header
%name pAbstract Abstract
%name pConcrete Concrete
%name pAbsDef AbsDef
%name pCncDef CncDef
%name pType Type
%name pExp Exp
%name pAtom Atom
%name pTerm Term
%name pTokn Tokn
%name pVariant Variant
%name pListConcrete ListConcrete
%name pListAbsDef ListAbsDef
%name pListCncDef ListCncDef
%name pListCId ListCId
%name pListTerm ListTerm
%name pListExp ListExp
%name pListString ListString
%name pListVariant ListVariant
-- no lexer declaration
%monad { Err } { thenM } { returnM }
%tokentype { Token }
%token
';' { PT _ (TS ";") }
'(' { PT _ (TS "(") }
')' { PT _ (TS ")") }
'{' { PT _ (TS "{") }
'}' { PT _ (TS "}") }
':' { PT _ (TS ":") }
'=' { PT _ (TS "=") }
'->' { PT _ (TS "->") }
'?' { PT _ (TS "?") }
'[' { PT _ (TS "[") }
']' { PT _ (TS "]") }
'!' { PT _ (TS "!") }
'$' { PT _ (TS "$") }
'[|' { PT _ (TS "[|") }
'|]' { PT _ (TS "|]") }
'+' { PT _ (TS "+") }
'@' { PT _ (TS "@") }
'#' { PT _ (TS "#") }
'/' { PT _ (TS "/") }
',' { PT _ (TS ",") }
'abstract' { PT _ (TS "abstract") }
'concrete' { PT _ (TS "concrete") }
'grammar' { PT _ (TS "grammar") }
'pre' { PT _ (TS "pre") }
L_quoted { PT _ (TL $$) }
L_integ { PT _ (TI $$) }
L_doubl { PT _ (TD $$) }
L_CId { PT _ (T_CId $$) }
L_err { _ }
%%
String :: { String } : L_quoted { $1 }
Integer :: { Integer } : L_integ { (read $1) :: Integer }
Double :: { Double } : L_doubl { (read $1) :: Double }
CId :: { CId} : L_CId { CId ($1)}
Grammar :: { Grammar }
Grammar : Header ';' Abstract ';' ListConcrete { Grm $1 $3 (reverse $5) }
Header :: { Header }
Header : 'grammar' CId '(' ListCId ')' { Hdr $2 $4 }
Abstract :: { Abstract }
Abstract : 'abstract' '{' ListAbsDef '}' { Abs (reverse $3) }
Concrete :: { Concrete }
Concrete : 'concrete' CId '{' ListCncDef '}' { Cnc $2 (reverse $4) }
AbsDef :: { AbsDef }
AbsDef : CId ':' Type '=' Exp { Fun $1 $3 $5 }
CncDef :: { CncDef }
CncDef : CId '=' Term { Lin $1 $3 }
Type :: { Type }
Type : ListCId '->' CId { Typ $1 $3 }
Exp :: { Exp }
Exp : '(' Atom ListExp ')' { Tr $2 (reverse $3) }
| Atom { trA_ $1 }
Atom :: { Atom }
Atom : CId { AC $1 }
| String { AS $1 }
| Integer { AI $1 }
| Double { AF $1 }
| '?' { AM }
Term :: { Term }
Term : '[' ListTerm ']' { R $2 }
| '(' Term '!' Term ')' { P $2 $4 }
| '(' ListTerm ')' { S $2 }
| Tokn { K $1 }
| '$' Integer { V $2 }
| Integer { C $1 }
| CId { F $1 }
| '[|' ListTerm '|]' { FV $2 }
| '(' String '+' Term ')' { W $2 $4 }
| '(' Term '@' Term ')' { RP $2 $4 }
| '?' { TM }
| '(' CId '->' Term ')' { L $2 $4 }
| '#' CId { BV $2 }
Tokn :: { Tokn }
Tokn : String { KS $1 }
| '[' 'pre' ListString '[' ListVariant ']' ']' { KP (reverse $3) $5 }
Variant :: { Variant }
Variant : ListString '/' ListString { Var (reverse $1) (reverse $3) }
ListConcrete :: { [Concrete] }
ListConcrete : {- empty -} { [] }
| ListConcrete Concrete ';' { flip (:) $1 $2 }
ListAbsDef :: { [AbsDef] }
ListAbsDef : {- empty -} { [] }
| ListAbsDef AbsDef ';' { flip (:) $1 $2 }
ListCncDef :: { [CncDef] }
ListCncDef : {- empty -} { [] }
| ListCncDef CncDef ';' { flip (:) $1 $2 }
ListCId :: { [CId] }
ListCId : {- empty -} { [] }
| CId { (:[]) $1 }
| CId ',' ListCId { (:) $1 $3 }
ListTerm :: { [Term] }
ListTerm : {- empty -} { [] }
| Term { (:[]) $1 }
| Term ',' ListTerm { (:) $1 $3 }
ListExp :: { [Exp] }
ListExp : {- empty -} { [] }
| ListExp Exp { flip (:) $1 $2 }
ListString :: { [String] }
ListString : {- empty -} { [] }
| ListString String { flip (:) $1 $2 }
ListVariant :: { [Variant] }
ListVariant : {- empty -} { [] }
| Variant { (:[]) $1 }
| Variant ',' ListVariant { (:) $1 $3 }
{
returnM :: a -> Err a
returnM = return
thenM :: Err a -> (a -> Err b) -> Err b
thenM = (>>=)
happyError :: [Token] -> Err a
happyError ts =
Bad $ "syntax error at " ++ tokenPos ts ++
case ts of
[] -> []
[Err _] -> " due to lexer error"
_ -> " before " ++ unwords (map prToken (take 4 ts))
myLexer = tokens
trA_ a_ = Tr a_ []
}
|
