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|
-- This Happy file was machine-generated by the BNF converter
{
module ParCFG where
import AbsCFG
import LexCFG
import ErrM
}
%name pGrammars Grammars
%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 "!") }
'end' { PT _ (TS "end") }
'grammar' { PT _ (TS "grammar") }
'startcat' { PT _ (TS "startcat") }
L_ident { PT _ (TV $$) }
L_integ { PT _ (TI $$) }
L_quoted { PT _ (TL $$) }
L_err { _ }
%%
Ident : L_ident { Ident $1 }
Integer : L_integ { (read $1) :: Integer }
String : L_quoted { $1 }
Grammars :: { Grammars }
Grammars : ListGrammar { Grammars (reverse $1) }
Grammar :: { Grammar }
Grammar : 'grammar' Ident ListFlag ListRule 'end' 'grammar' { Grammar $2 (reverse $3) (reverse $4) }
ListGrammar :: { [Grammar] }
ListGrammar : {- empty -} { [] }
| ListGrammar Grammar { flip (:) $1 $2 }
Flag :: { Flag }
Flag : 'startcat' Category { StartCat $2 }
ListFlag :: { [Flag] }
ListFlag : {- empty -} { [] }
| ListFlag Flag ';' { flip (:) $1 $2 }
Rule :: { Rule }
Rule : Ident ':' Name Profile '.' Category '->' ListSymbol { Rule $1 $3 $4 $6 (reverse $8) }
ListRule :: { [Rule] }
ListRule : {- empty -} { [] }
| ListRule Rule ';' { flip (:) $1 $2 }
Profile :: { Profile }
Profile : '[' ListInts ']' { Profile $2 }
Ints :: { Ints }
Ints : '[' ListInteger ']' { Ints $2 }
ListInts :: { [Ints] }
ListInts : {- empty -} { [] }
| Ints { (:[]) $1 }
| Ints ',' ListInts { (:) $1 $3 }
ListInteger :: { [Integer] }
ListInteger : {- empty -} { [] }
| Integer { (:[]) $1 }
| Integer ',' ListInteger { (:) $1 $3 }
Symbol :: { Symbol }
Symbol : Category { CatS $1 }
| String { TermS $1 }
ListSymbol :: { [Symbol] }
ListSymbol : {- empty -} { [] }
| ListSymbol Symbol { flip (:) $1 $2 }
Name :: { Name }
Name : ListIdentParam Category { Name (reverse $1) $2 }
ListIdentParam :: { [IdentParam] }
ListIdentParam : {- empty -} { [] }
| ListIdentParam IdentParam '/' { flip (:) $1 $2 }
Category :: { Category }
Category : IdentParam '.' Ident ListParam { Category $1 $3 (reverse $4) }
IdentParam :: { IdentParam }
IdentParam : Ident '{' ListParam '}' { IdentParam $1 (reverse $3) }
Param :: { Param }
Param : '!' Ident { Param $2 }
ListParam :: { [Param] }
ListParam : {- empty -} { [] }
| ListParam Param { flip (:) $1 $2 }
{
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 ++ if null ts then [] else (" before " ++ unwords (map prToken (take 4 ts)))
myLexer = tokens
}
|
