mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-12 09:17:53 +00:00
e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
171 lines
6.9 KiB
C
171 lines
6.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2022 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "tool/plinko/lib/plinko.h"
|
|
|
|
/**
|
|
* Matches
|
|
*
|
|
* (⅄ (λ (N) ((λ (W) (W W)) (λ (V) (N (λ M ((V V) . M)))))) . Q)
|
|
*
|
|
* @return true if matches, otherwise false
|
|
* @note M must be a non-nil atom
|
|
* @note N must be a non-nil atom
|
|
* @note Q is ignored
|
|
* @note V must be a non-nil atom
|
|
* @note W must be a non-nil atom
|
|
* @note λ means LAMBDA
|
|
* @note ⅄ means CLOSURE
|
|
*/
|
|
bool IsYcombinator(int x_) {
|
|
dword w_;
|
|
if (x_ >= 0) return false;
|
|
w_ = Get(x_);
|
|
int ax_ = LO(w_);
|
|
int dx_ = HI(w_);
|
|
if (ax_ != kClosure) return false;
|
|
if (dx_ >= 0) return false;
|
|
w_ = Get(dx_); // ((λ (N) ((λ (W) (W W)) (λ (V) (N (λ M ((V V) . M)))))) . Q)
|
|
int adx_ = LO(w_);
|
|
if (adx_ >= 0) return false;
|
|
w_ = Get(adx_); // (λ (N) ((λ (W) (W W)) (λ (V) (N (λ M ((V V) . M))))))
|
|
int aadx_ = LO(w_);
|
|
int dadx_ = HI(w_);
|
|
if (aadx_ != kLambda) return false;
|
|
if (dadx_ >= 0) return false;
|
|
w_ = Get(dadx_); // ((N) ((λ (W) (W W)) (λ (V) (N (λ M ((V V) . M))))))
|
|
int adadx_ = LO(w_);
|
|
int ddadx_ = HI(w_);
|
|
if (adadx_ >= 0) return false;
|
|
w_ = Get(adadx_); // (N)
|
|
int aadadx_ = LO(w_);
|
|
int dadadx_ = HI(w_);
|
|
if (ddadx_ >= 0) return false;
|
|
w_ = Get(ddadx_); // (((λ (W) (W W)) (λ (V) (N (λ M ((V V) . M))))))
|
|
int addadx_ = LO(w_);
|
|
int dddadx_ = HI(w_);
|
|
int N = aadadx_;
|
|
if (N <= 0) return false;
|
|
if (addadx_ >= 0) return false;
|
|
w_ = Get(addadx_); // ((λ (W) (W W)) (λ (V) (N (λ M ((V V) . M)))))
|
|
int aaddadx_ = LO(w_);
|
|
int daddadx_ = HI(w_);
|
|
if (dadadx_) return false;
|
|
if (dddadx_) return false;
|
|
if (aaddadx_ >= 0) return false;
|
|
w_ = Get(aaddadx_); // (λ (W) (W W))
|
|
int aaaddadx_ = LO(w_);
|
|
int daaddadx_ = HI(w_);
|
|
if (daddadx_ >= 0) return false;
|
|
w_ = Get(daddadx_); // ((λ (V) (N (λ M ((V V) . M)))))
|
|
int adaddadx_ = LO(w_);
|
|
int ddaddadx_ = HI(w_);
|
|
if (aaaddadx_ != kLambda) return false;
|
|
if (adaddadx_ >= 0) return false;
|
|
w_ = Get(adaddadx_); // (λ (V) (N (λ M ((V V) . M))))
|
|
int aadaddadx_ = LO(w_);
|
|
int dadaddadx_ = HI(w_);
|
|
if (daaddadx_ >= 0) return false;
|
|
w_ = Get(daaddadx_); // ((W) (W W))
|
|
int adaaddadx_ = LO(w_);
|
|
int ddaaddadx_ = HI(w_);
|
|
if (ddaddadx_) return false;
|
|
if (adaaddadx_ >= 0) return false;
|
|
w_ = Get(adaaddadx_); // (W)
|
|
int aadaaddadx_ = LO(w_);
|
|
int dadaaddadx_ = HI(w_);
|
|
if (aadaddadx_ != kLambda) return false;
|
|
if (ddaaddadx_ >= 0) return false;
|
|
w_ = Get(ddaaddadx_); // ((W W))
|
|
int addaaddadx_ = LO(w_);
|
|
int dddaaddadx_ = HI(w_);
|
|
if (dadaddadx_ >= 0) return false;
|
|
w_ = Get(dadaddadx_); // ((V) (N (λ M ((V V) . M))))
|
|
int adadaddadx_ = LO(w_);
|
|
int ddadaddadx_ = HI(w_);
|
|
int W = aadaaddadx_;
|
|
if (W <= 0) return false;
|
|
if (adadaddadx_ >= 0) return false;
|
|
w_ = Get(adadaddadx_); // (V)
|
|
int aadadaddadx_ = LO(w_);
|
|
int dadadaddadx_ = HI(w_);
|
|
if (addaaddadx_ >= 0) return false;
|
|
w_ = Get(addaaddadx_); // (W W)
|
|
int aaddaaddadx_ = LO(w_);
|
|
int daddaaddadx_ = HI(w_);
|
|
if (ddadaddadx_ >= 0) return false;
|
|
w_ = Get(ddadaddadx_); // ((N (λ M ((V V) . M))))
|
|
int addadaddadx_ = LO(w_);
|
|
int dddadaddadx_ = HI(w_);
|
|
if (dadaaddadx_) return false;
|
|
int V = aadadaddadx_;
|
|
if (V <= 0) return false;
|
|
if (dddaaddadx_) return false;
|
|
if (addadaddadx_ >= 0) return false;
|
|
w_ = Get(addadaddadx_); // (N (λ M ((V V) . M)))
|
|
int aaddadaddadx_ = LO(w_);
|
|
int daddadaddadx_ = HI(w_);
|
|
if (aaddaaddadx_ != W) return false;
|
|
if (dadadaddadx_) return false;
|
|
if (daddaaddadx_ >= 0) return false;
|
|
w_ = Get(daddaaddadx_); // (W)
|
|
int adaddaaddadx_ = LO(w_);
|
|
int ddaddaaddadx_ = HI(w_);
|
|
if (dddadaddadx_) return false;
|
|
if (adaddaaddadx_ != W) return false;
|
|
if (aaddadaddadx_ != N) return false;
|
|
if (ddaddaaddadx_) return false;
|
|
if (daddadaddadx_ >= 0) return false;
|
|
w_ = Get(daddadaddadx_); // ((λ M ((V V) . M)))
|
|
int adaddadaddadx_ = LO(w_);
|
|
int ddaddadaddadx_ = HI(w_);
|
|
if (adaddadaddadx_ >= 0) return false;
|
|
w_ = Get(adaddadaddadx_); // (λ M ((V V) . M))
|
|
int aadaddadaddadx_ = LO(w_);
|
|
int dadaddadaddadx_ = HI(w_);
|
|
if (ddaddadaddadx_) return false;
|
|
if (aadaddadaddadx_ != kLambda) return false;
|
|
if (dadaddadaddadx_ >= 0) return false;
|
|
w_ = Get(dadaddadaddadx_); // (M ((V V) . M))
|
|
int adadaddadaddadx_ = LO(w_);
|
|
int ddadaddadaddadx_ = HI(w_);
|
|
int M = adadaddadaddadx_;
|
|
if (M <= 0) return false;
|
|
if (ddadaddadaddadx_ >= 0) return false;
|
|
w_ = Get(ddadaddadaddadx_); // (((V V) . M))
|
|
int addadaddadaddadx_ = LO(w_);
|
|
int dddadaddadaddadx_ = HI(w_);
|
|
if (addadaddadaddadx_ >= 0) return false;
|
|
w_ = Get(addadaddadaddadx_); // ((V V) . M)
|
|
int aaddadaddadaddadx_ = LO(w_);
|
|
int daddadaddadaddadx_ = HI(w_);
|
|
if (dddadaddadaddadx_) return false;
|
|
if (aaddadaddadaddadx_ >= 0) return false;
|
|
w_ = Get(aaddadaddadaddadx_); // (V V)
|
|
int aaaddadaddadaddadx_ = LO(w_);
|
|
int daaddadaddadaddadx_ = HI(w_);
|
|
if (daddadaddadaddadx_ != M) return false;
|
|
if (aaaddadaddadaddadx_ != V) return false;
|
|
if (daaddadaddadaddadx_ >= 0) return false;
|
|
w_ = Get(daaddadaddadaddadx_); // (V)
|
|
int adaaddadaddadaddadx_ = LO(w_);
|
|
int ddaaddadaddadaddadx_ = HI(w_);
|
|
if (adaaddadaddadaddadx_ != V) return false;
|
|
if (ddaaddadaddadaddadx_) return false;
|
|
return true;
|
|
}
|