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/*==========================================================================*/
/* Sail */
/* */
/* Sail and the Sail architecture models here, comprising all files and */
/* directories except the ASL-derived Sail code in the aarch64 directory, */
/* are subject to the BSD two-clause licence below. */
/* */
/* The ASL derived parts of the ARMv8.3 specification in */
/* aarch64/no_vector and aarch64/full are copyright ARM Ltd. */
/* */
/* Copyright (c) 2013-2021 */
/* Kathyrn Gray */
/* Shaked Flur */
/* Stephen Kell */
/* Gabriel Kerneis */
/* Robert Norton-Wright */
/* Christopher Pulte */
/* Peter Sewell */
/* Alasdair Armstrong */
/* Brian Campbell */
/* Thomas Bauereiss */
/* Anthony Fox */
/* Jon French */
/* Dominic Mulligan */
/* Stephen Kell */
/* Mark Wassell */
/* Alastair Reid (Arm Ltd) */
/* */
/* All rights reserved. */
/* */
/* This work was partially supported by EPSRC grant EP/K008528/1 <a */
/* href="http://www.cl.cam.ac.uk/users/pes20/rems">REMS: Rigorous */
/* Engineering for Mainstream Systems</a>, an ARM iCASE award, EPSRC IAA */
/* KTF funding, and donations from Arm. This project has received */
/* funding from the European Research Council (ERC) under the European */
/* Union’s Horizon 2020 research and innovation programme (grant */
/* agreement No 789108, ELVER). */
/* */
/* This software was developed by SRI International and the University of */
/* Cambridge Computer Laboratory (Department of Computer Science and */
/* Technology) under DARPA/AFRL contracts FA8650-18-C-7809 ("CIFV") */
/* and FA8750-10-C-0237 ("CTSRD"). */
/* */
/* SPDX-License-Identifier: BSD-2-Clause */
/*==========================================================================*/
$ifndef _MAPPING
$define _MAPPING
$include <arith.sail>
$include <option.sail>
$[sv_function { types = "int #1" }]
val string_take = pure {
lean: "String.take",
_: "string_take"
}: (string, nat) -> string
$[sv_function { types = "int #1" }]
val string_drop = pure {
lean: "String.drop",
_: "string_drop"
}: (string, nat) -> string
$[sv_function { return_type = "int" }]
val string_length = pure {
lean: "String.length",
_: "string_length"
}: string -> nat
val string_append = pure {
coq: "String.append",
lean: "String.append",
c: "concat_str",
_: "string_append"
} : (string, string) -> string
val string_startswith = pure {
lean: "String.startsWith",
_: "string_startswith"
}: (string, string) -> bool
val n_leading_spaces = pure { coq: "n_leading_spaces_Z", lean: "String.leadingSpaces" } : string -> nat
function n_leading_spaces s =
match s {
"" => 0,
_ => match string_take(s, 1) {
" " => 1 + n_leading_spaces(string_drop(s, 1)),
_ => 0
}
}
/*!
In a string mapping this is treated as `[ ]+`, i.e one or more space
characters. It is printed as a single space `" "`.
*/
val spc : unit <-> string
function spc_forwards() = " "
function spc_forwards_matches() = true
function spc_backwards _ = ()
function spc_backwards_matches s = {
let len = string_length(s);
n_leading_spaces(s) == len & len > 0
}
/*!
In a string mapping this is treated as `[ ]*`, i.e. zero or more space
characters. It is printed as the empty string.
*/
val opt_spc : unit <-> string
function opt_spc_forwards() = ""
function opt_spc_forwards_matches() = true
function opt_spc_backwards _ = ()
function opt_spc_backwards_matches s = n_leading_spaces(s) == string_length(s)
/*!
Like `opt_spc`, in a string mapping this is treated as `[ ]*`, i.e. zero or more space
characters. It differs however in that it is printed as a single space `" "`.
*/
val def_spc : unit <-> string
function def_spc_forwards() = " "
function def_spc_forwards_matches() = true
function def_spc_backwards _ = ()
function def_spc_backwards_matches s = n_leading_spaces(s) == string_length(s)
mapping sep : unit <-> string = {
() <-> opt_spc() ^ "," ^ def_spc()
}
$endif
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