adamc@26: (* Copyright (c) 2008, Adam Chlipala
adamc@26:  * All rights reserved.
adamc@26:  *
adamc@26:  * Redistribution and use in source and binary forms, with or without
adamc@26:  * modification, are permitted provided that the following conditions are met:
adamc@26:  *
adamc@26:  * - Redistributions of source code must retain the above copyright notice,
adamc@26:  *   this list of conditions and the following disclaimer.
adamc@26:  * - Redistributions in binary form must reproduce the above copyright notice,
adamc@26:  *   this list of conditions and the following disclaimer in the documentation
adamc@26:  *   and/or other materials provided with the distribution.
adamc@26:  * - The names of contributors may not be used to endorse or promote products
adamc@26:  *   derived from this software without specific prior written permission.
adamc@26:  *
adamc@26:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@26:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@26:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@26:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
adamc@26:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@26:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@26:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@26:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@26:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@26:  * POSSIBILITY OF SUCH DAMAGE.
adamc@26:  *)
adamc@26: 
adamc@26: signature FLAT_UTIL = sig
adamc@26: 
adamc@26: structure Typ : sig
adamc@26:     val mapfold : (Flat.typ', 'state, 'abort) Search.mapfolder
adamc@26:                   -> (Flat.typ, 'state, 'abort) Search.mapfolder
adamc@26: 
adamc@26:     val map : (Flat.typ' -> Flat.typ')
adamc@26:               -> Flat.typ -> Flat.typ
adamc@26: 
adamc@26:     val fold : (Flat.typ' * 'state -> 'state)
adamc@26:               -> 'state -> Flat.typ -> 'state
adamc@26: 
adamc@26:     val exists : (Flat.typ' -> bool) -> Flat.typ -> bool
adamc@26: end
adamc@26: 
adamc@26: structure Exp : sig
adamc@26:     datatype binder =
adamc@26:              NamedT of string * int * Flat.typ option
adamc@26:            | RelE of string * Flat.typ
adamc@26:            | NamedE of string * int * Flat.typ * Flat.exp option
adamc@26: 
adamc@26:     val mapfoldB : {typ : (Flat.typ', 'state, 'abort) Search.mapfolder,
adamc@26:                     exp : ('typtext, Flat.exp', 'state, 'abort) Search.mapfolderB,
adamc@26:                     bind : 'typtext * binder -> 'typtext}
adamc@26:                    -> ('typtext, Flat.exp, 'state, 'abort) Search.mapfolderB
adamc@26:     val mapfold : {typ : (Flat.typ', 'state, 'abort) Search.mapfolder,
adamc@26:                    exp : (Flat.exp', 'state, 'abort) Search.mapfolder}
adamc@26:                   -> (Flat.exp, 'state, 'abort) Search.mapfolder
adamc@26: 
adamc@26:     val map : {typ : Flat.typ' -> Flat.typ',
adamc@26:                exp : Flat.exp' -> Flat.exp'}
adamc@26:               -> Flat.exp -> Flat.exp
adamc@26:     val mapB : {typ : Flat.typ' -> Flat.typ',
adamc@26:                 exp : 'typtext -> Flat.exp' -> Flat.exp',
adamc@26:                 bind : 'typtext * binder -> 'typtext}
adamc@26:                -> 'typtext -> (Flat.exp -> Flat.exp)
adamc@26: 
adamc@26:     val fold : {typ : Flat.typ' * 'state -> 'state,
adamc@26:                 exp : Flat.exp' * 'state -> 'state}
adamc@26:                -> 'state -> Flat.exp -> 'state
adamc@26:                                         
adamc@26:     val exists : {typ : Flat.typ' -> bool,
adamc@26:                   exp : Flat.exp' -> bool} -> Flat.exp -> bool
adamc@26: end
adamc@26: 
adamc@26: structure Decl : sig
adamc@26:     datatype binder = datatype Exp.binder
adamc@26: 
adamc@26:     val mapfoldB : {typ : (Flat.typ', 'state, 'abort) Search.mapfolder,
adamc@26:                     exp : ('typtext, Flat.exp', 'state, 'abort) Search.mapfolderB,
adamc@26:                     decl : ('typtext, Flat.decl', 'state, 'abort) Search.mapfolderB,
adamc@26:                     bind : 'typtext * binder -> 'typtext}
adamc@26:                    -> ('typtext, Flat.decl, 'state, 'abort) Search.mapfolderB
adamc@26:     val mapfold : {typ : (Flat.typ', 'state, 'abort) Search.mapfolder,
adamc@26:                    exp : (Flat.exp', 'state, 'abort) Search.mapfolder,
adamc@26:                    decl : (Flat.decl', 'state, 'abort) Search.mapfolder}
adamc@26:                   -> (Flat.decl, 'state, 'abort) Search.mapfolder
adamc@26: 
adamc@26:     val fold : {typ : Flat.typ' * 'state -> 'state,
adamc@26:                 exp : Flat.exp' * 'state -> 'state,
adamc@26:                 decl : Flat.decl' * 'state -> 'state}
adamc@26:                -> 'state -> Flat.decl -> 'state
adamc@26: end
adamc@26: 
adamc@26: structure File : sig
adamc@26:     datatype binder =
adamc@26:              NamedT of string * int * Flat.typ option
adamc@26:            | RelE of string * Flat.typ
adamc@26:            | NamedE of string * int * Flat.typ * Flat.exp option
adamc@26:            | F of int * string * Flat.typ * Flat.typ * Flat.exp
adamc@26: 
adamc@26:     val mapfoldB : {typ : (Flat.typ', 'state, 'abort) Search.mapfolder,
adamc@26:                     exp : ('typtext, Flat.exp', 'state, 'abort) Search.mapfolderB,
adamc@26:                     decl : ('typtext, Flat.decl', 'state, 'abort) Search.mapfolderB,
adamc@26:                     bind : 'typtext * binder -> 'typtext}
adamc@26:                    -> ('typtext, Flat.file, 'state, 'abort) Search.mapfolderB
adamc@26: 
adamc@26:     val mapfold : {typ : (Flat.typ', 'state, 'abort) Search.mapfolder,
adamc@26:                    exp : (Flat.exp', 'state, 'abort) Search.mapfolder,
adamc@26:                    decl : (Flat.decl', 'state, 'abort) Search.mapfolder}
adamc@26:                   -> (Flat.file, 'state, 'abort) Search.mapfolder
adamc@26: 
adamc@26:     val mapB : {typ : Flat.typ' -> Flat.typ',
adamc@26:                 exp : 'typtext -> Flat.exp' -> Flat.exp',
adamc@26:                 decl : 'typtext -> Flat.decl' -> Flat.decl',
adamc@26:                 bind : 'typtext * binder -> 'typtext}
adamc@26:                -> 'typtext -> Flat.file -> Flat.file
adamc@26: 
adamc@26:     val fold : {typ : Flat.typ' * 'state -> 'state,
adamc@26:                 exp : Flat.exp' * 'state -> 'state,
adamc@26:                 decl : Flat.decl' * 'state -> 'state}
adamc@26:                -> 'state -> Flat.file -> 'state
adamc@26: end
adamc@26: 
adamc@26: end