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diff --git a/next-lib/src/prelude/Predef.gf b/next-lib/src/prelude/Predef.gf
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---1 Predefined functions for concrete syntax
-
--- The definitions of these constants are hard-coded in GF, and defined
--- in [AppPredefined.hs ../src/GF/Grammar/AppPredefined.hs]. Applying
--- them to run-time variables leads to compiler errors that are often
--- only detected at the code generation time.
-
-resource Predef = {
-
--- This type of booleans is for internal use only.
-
- param PBool = PTrue | PFalse ;
-
- oper Error : Type = variants {} ; -- the empty type
- oper Int : Type = variants {} ; -- the type of integers
- oper Ints : Int -> Type = variants {} ; -- the type of integers from 0 to n
-
- oper error : Str -> Error = variants {} ; -- forms error message
- oper length : Tok -> Int = variants {} ; -- length of string
- oper drop : Int -> Tok -> Tok = variants {} ; -- drop prefix of length
- oper take : Int -> Tok -> Tok = variants {} ; -- take prefix of length
- oper tk : Int -> Tok -> Tok = variants {} ; -- drop suffix of length
- oper dp : Int -> Tok -> Tok = variants {} ; -- take suffix of length
- oper eqInt : Int -> Int -> PBool = variants {} ; -- test if equal integers
- oper lessInt: Int -> Int -> PBool = variants {} ; -- test order of integers
- oper plus : Int -> Int -> Int = variants {} ; -- add integers
- oper eqStr : Tok -> Tok -> PBool = variants {} ; -- test if equal strings
- oper occur : Tok -> Tok -> PBool = variants {} ; -- test if occurs as substring
- oper occurs : Tok -> Tok -> PBool = variants {} ; -- test if any char occurs
- oper show : (P : Type) -> P -> Tok = variants {} ; -- convert param to string
- oper read : (P : Type) -> Tok -> P = variants {} ; -- convert string to param
- oper toStr : (L : Type) -> L -> Str = variants {} ; -- find the "first" string
- oper mapStr : (L : Type) -> (Str -> Str) -> L -> L = variants {} ;
- -- map all strings in a data structure; experimental ---
-
-} ;
-