adamc@2: (* Copyright (c) 2008, Adam Chlipala
adamc@2:  * All rights reserved.
adamc@2:  *
adamc@2:  * Redistribution and use in source and binary forms, with or without
adamc@2:  * modification, are permitted provided that the following conditions are met:
adamc@2:  *
adamc@2:  * - Redistributions of source code must retain the above copyright notice,
adamc@2:  *   this list of conditions and the following disclaimer.
adamc@2:  * - Redistributions in binary form must reproduce the above copyright notice,
adamc@2:  *   this list of conditions and the following disclaimer in the documentation
adamc@2:  *   and/or other materials provided with the distribution.
adamc@2:  * - The names of contributors may not be used to endorse or promote products
adamc@2:  *   derived from this software without specific prior written permission.
adamc@2:  *
adamc@2:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@2:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@2:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@2:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@2:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
adamc@2:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@2:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@2:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@2:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@2:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@2:  * POSSIBILITY OF SUCH DAMAGE.
adamc@2:  *)
adamc@2: 
adamc@2: structure Elab = struct
adamc@2: 
adamc@2: type 'a located = 'a ErrorMsg.located
adamc@2: 
adamc@2: datatype kind' =
adamc@2:          KType
adamc@2:        | KArrow of kind * kind
adamc@2:        | KName
adamc@2:        | KRecord of kind
adamc@82:        | KUnit
adamc@2: 
adamc@2:        | KError
adamc@76:        | KUnif of ErrorMsg.span * string * kind option ref
adamc@2: 
adamc@2: withtype kind = kind' located
adamc@2: 
adamc@2: datatype explicitness =
adamc@2:          Explicit
adamc@2:        | Implicit
adamc@2: 
adamc@2: datatype con' =
adamc@2:          TFun of con * con
adamc@2:        | TCFun of explicitness * string * kind * con
adamc@2:        | TRecord of con
adamc@2: 
adamc@2:        | CRel of int
adamc@2:        | CNamed of int
adamc@34:        | CModProj of int * string list * string
adamc@2:        | CApp of con * con
adamc@8:        | CAbs of string * kind * con
adamc@84:        | CDisjoint of con * con * con
adamc@2: 
adamc@2:        | CName of string
adamc@2: 
adamc@2:        | CRecord of kind * (con * con) list
adamc@2:        | CConcat of con * con
adamc@67:        | CFold of kind * kind
adamc@2: 
adamc@82:        | CUnit
adamc@82: 
adamc@2:        | CError
adamc@76:        | CUnif of ErrorMsg.span * kind * string * con option ref
adamc@2: 
adamc@2: withtype con = con' located
adamc@2: 
adamc@9: datatype exp' =
adamc@14:          EPrim of Prim.t
adamc@14:        | ERel of int
adamc@9:        | ENamed of int
adamc@34:        | EModProj of int * string list * string
adamc@9:        | EApp of exp * exp
adamc@26:        | EAbs of string * con * con * exp
adamc@9:        | ECApp of exp * con
adamc@9:        | ECAbs of explicitness * string * kind * exp
adamc@9: 
adamc@29:        | ERecord of (con * exp * con) list
adamc@12:        | EField of exp * con * { field : con, rest : con }
adamc@71:        | EFold of kind
adamc@12: 
adamc@9:        | EError
adamc@9: 
adamc@9: withtype exp = exp' located
adamc@9: 
adamc@31: datatype sgn_item' =
adamc@31:          SgiConAbs of string * int * kind
adamc@31:        | SgiCon of string * int * kind * con
adamc@31:        | SgiVal of string * int * con
adamc@31:        | SgiStr of string * int * sgn
adamc@59:        | SgiSgn of string * int * sgn
adamc@31: 
adamc@31: and sgn' =
adamc@31:     SgnConst of sgn_item list
adamc@31:   | SgnVar of int
adamc@41:   | SgnFun of string * int * sgn * sgn
adamc@42:   | SgnWhere of sgn * string * con
adamc@59:   | SgnProj of int * string list * string
adamc@31:   | SgnError
adamc@31: 
adamc@31: withtype sgn_item = sgn_item' located
adamc@31: and sgn = sgn' located
adamc@31: 
adamc@2: datatype decl' =
adamc@5:          DCon of string * int * kind * con
adamc@9:        | DVal of string * int * con * exp
adamc@31:        | DSgn of string * int * sgn
adamc@31:        | DStr of string * int * sgn * str
adamc@48:        | DFfiStr of string * int * sgn
adamc@31: 
adamc@31:      and str' =
adamc@31:          StrConst of decl list
adamc@31:        | StrVar of int
adamc@34:        | StrProj of str * string
adamc@41:        | StrFun of string * int * sgn * sgn * str
adamc@44:        | StrApp of str * str
adamc@31:        | StrError
adamc@2: 
adamc@2: withtype decl = decl' located
adamc@31:      and str = str' located
adamc@31:                
adamc@2: type file = decl list
adamc@2: 
adamc@2: end