/rust/registry/src/index.crates.io-6f17d22bba15001f/anyhow-1.0.66/src/ensure.rs
Line | Count | Source (jump to first uncovered line) |
1 | | use crate::Error; |
2 | | use alloc::string::String; |
3 | | use core::fmt::{self, Debug, Write}; |
4 | | use core::mem::MaybeUninit; |
5 | | use core::ptr; |
6 | | use core::slice; |
7 | | use core::str; |
8 | | |
9 | | #[doc(hidden)] |
10 | | pub trait BothDebug { |
11 | | fn __dispatch_ensure(self, msg: &'static str) -> Error; |
12 | | } |
13 | | |
14 | | impl<A, B> BothDebug for (A, B) |
15 | | where |
16 | | A: Debug, |
17 | | B: Debug, |
18 | | { |
19 | 0 | fn __dispatch_ensure(self, msg: &'static str) -> Error { |
20 | 0 | render(msg, &self.0, &self.1) |
21 | 0 | } |
22 | | } |
23 | | |
24 | | #[doc(hidden)] |
25 | | pub trait NotBothDebug { |
26 | | fn __dispatch_ensure(self, msg: &'static str) -> Error; |
27 | | } |
28 | | |
29 | | impl<A, B> NotBothDebug for &(A, B) { |
30 | 0 | fn __dispatch_ensure(self, msg: &'static str) -> Error { |
31 | 0 | Error::msg(msg) |
32 | 0 | } |
33 | | } |
34 | | |
35 | | struct Buf { |
36 | | bytes: [MaybeUninit<u8>; 40], |
37 | | written: usize, |
38 | | } |
39 | | |
40 | | impl Buf { |
41 | 0 | fn new() -> Self { |
42 | 0 | Buf { |
43 | 0 | bytes: [MaybeUninit::uninit(); 40], |
44 | 0 | written: 0, |
45 | 0 | } |
46 | 0 | } |
47 | | |
48 | 0 | fn as_str(&self) -> &str { |
49 | 0 | unsafe { |
50 | 0 | str::from_utf8_unchecked(slice::from_raw_parts( |
51 | 0 | self.bytes.as_ptr().cast::<u8>(), |
52 | 0 | self.written, |
53 | 0 | )) |
54 | 0 | } |
55 | 0 | } |
56 | | } |
57 | | |
58 | | impl Write for Buf { |
59 | 0 | fn write_str(&mut self, s: &str) -> fmt::Result { |
60 | 0 | if s.bytes().any(|b| b == b' ' || b == b'\n') { |
61 | 0 | return Err(fmt::Error); |
62 | 0 | } |
63 | 0 |
|
64 | 0 | let remaining = self.bytes.len() - self.written; |
65 | 0 | if s.len() > remaining { |
66 | 0 | return Err(fmt::Error); |
67 | 0 | } |
68 | 0 |
|
69 | 0 | unsafe { |
70 | 0 | ptr::copy_nonoverlapping( |
71 | 0 | s.as_ptr(), |
72 | 0 | self.bytes.as_mut_ptr().add(self.written).cast::<u8>(), |
73 | 0 | s.len(), |
74 | 0 | ); |
75 | 0 | } |
76 | 0 | self.written += s.len(); |
77 | 0 | Ok(()) |
78 | 0 | } |
79 | | } |
80 | | |
81 | 0 | fn render(msg: &'static str, lhs: &dyn Debug, rhs: &dyn Debug) -> Error { |
82 | 0 | let mut lhs_buf = Buf::new(); |
83 | 0 | if fmt::write(&mut lhs_buf, format_args!("{:?}", lhs)).is_ok() { |
84 | 0 | let mut rhs_buf = Buf::new(); |
85 | 0 | if fmt::write(&mut rhs_buf, format_args!("{:?}", rhs)).is_ok() { |
86 | 0 | let lhs_str = lhs_buf.as_str(); |
87 | 0 | let rhs_str = rhs_buf.as_str(); |
88 | 0 | // "{msg} ({lhs} vs {rhs})" |
89 | 0 | let len = msg.len() + 2 + lhs_str.len() + 4 + rhs_str.len() + 1; |
90 | 0 | let mut string = String::with_capacity(len); |
91 | 0 | string.push_str(msg); |
92 | 0 | string.push_str(" ("); |
93 | 0 | string.push_str(lhs_str); |
94 | 0 | string.push_str(" vs "); |
95 | 0 | string.push_str(rhs_str); |
96 | 0 | string.push(')'); |
97 | 0 | return Error::msg(string); |
98 | 0 | } |
99 | 0 | } |
100 | 0 | Error::msg(msg) |
101 | 0 | } |
102 | | |
103 | | #[doc(hidden)] |
104 | | #[macro_export] |
105 | | macro_rules! __parse_ensure { |
106 | | (atom () $bail:tt $fuel:tt {($($rhs:tt)+) ($($lhs:tt)+) $op:tt} $dup:tt $(,)?) => { |
107 | | $crate::__fancy_ensure!($($lhs)+, $op, $($rhs)+) |
108 | | }; |
109 | | |
110 | | // low precedence control flow constructs |
111 | | |
112 | | (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt return $($rest:tt)*) => { |
113 | | $crate::__fallback_ensure!($($bail)*) |
114 | | }; |
115 | | |
116 | | (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt break $($rest:tt)*) => { |
117 | | $crate::__fallback_ensure!($($bail)*) |
118 | | }; |
119 | | |
120 | | (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt continue $($rest:tt)*) => { |
121 | | $crate::__fallback_ensure!($($bail)*) |
122 | | }; |
123 | | |
124 | | (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt yield $($rest:tt)*) => { |
125 | | $crate::__fallback_ensure!($($bail)*) |
126 | | }; |
127 | | |
128 | | (0 $stack:tt ($($bail:tt)*) $fuel:tt $parse:tt $dup:tt move $($rest:tt)*) => { |
129 | | $crate::__fallback_ensure!($($bail)*) |
130 | | }; |
131 | | |
132 | | // unary operators |
133 | | |
134 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($deref:tt $($dup:tt)*) * $($rest:tt)*) => { |
135 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $deref) $($parse)*} ($($rest)*) $($rest)*) |
136 | | }; |
137 | | |
138 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($not:tt $($dup:tt)*) ! $($rest:tt)*) => { |
139 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $not) $($parse)*} ($($rest)*) $($rest)*) |
140 | | }; |
141 | | |
142 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($neg:tt $($dup:tt)*) - $($rest:tt)*) => { |
143 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $neg) $($parse)*} ($($rest)*) $($rest)*) |
144 | | }; |
145 | | |
146 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($let:tt $($dup:tt)*) let $($rest:tt)*) => { |
147 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $let) $($parse)*} ($($rest)*) $($rest)*) |
148 | | }; |
149 | | |
150 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($life:tt $colon:tt $($dup:tt)*) $label:lifetime : $($rest:tt)*) => { |
151 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $life $colon) $($parse)*} ($($rest)*) $($rest)*) |
152 | | }; |
153 | | |
154 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $mut:tt $($dup:tt)*) &mut $($rest:tt)*) => { |
155 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and $mut) $($parse)*} ($($rest)*) $($rest)*) |
156 | | }; |
157 | | |
158 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) & $($rest:tt)*) => { |
159 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*) |
160 | | }; |
161 | | |
162 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $mut:tt $($dup:tt)*) &&mut $($rest:tt)*) => { |
163 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand $mut) $($parse)*} ($($rest)*) $($rest)*) |
164 | | }; |
165 | | |
166 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $($dup:tt)*) && $($rest:tt)*) => { |
167 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand) $($parse)*} ($($rest)*) $($rest)*) |
168 | | }; |
169 | | |
170 | | // control flow constructs |
171 | | |
172 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($if:tt $($dup:tt)*) if $($rest:tt)*) => { |
173 | | $crate::__parse_ensure!(0 (cond $stack) $bail ($($fuel)*) {($($buf)* $if) $($parse)*} ($($rest)*) $($rest)*) |
174 | | }; |
175 | | |
176 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($match:tt $($dup:tt)*) match $($rest:tt)*) => { |
177 | | $crate::__parse_ensure!(0 (cond $stack) $bail ($($fuel)*) {($($buf)* $match) $($parse)*} ($($rest)*) $($rest)*) |
178 | | }; |
179 | | |
180 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($while:tt $($dup:tt)*) while $($rest:tt)*) => { |
181 | | $crate::__parse_ensure!(0 (cond $stack) $bail ($($fuel)*) {($($buf)* $while) $($parse)*} ($($rest)*) $($rest)*) |
182 | | }; |
183 | | |
184 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($for:tt $($dup:tt)*) for $($rest:tt)*) => { |
185 | | $crate::__parse_ensure!(pat (cond $stack) $bail ($($fuel)*) {($($buf)* $for) $($parse)*} ($($rest)*) $($rest)*) |
186 | | }; |
187 | | |
188 | | (atom (cond $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($block:tt)*} $($rest:tt)*) => { |
189 | | $crate::__parse_ensure!(cond $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*) |
190 | | }; |
191 | | |
192 | | (cond $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($else:tt $if:tt $($dup:tt)*) else if $($rest:tt)*) => { |
193 | | $crate::__parse_ensure!(0 (cond $stack) $bail ($($fuel)*) {($($buf)* $else $if) $($parse)*} ($($rest)*) $($rest)*) |
194 | | }; |
195 | | |
196 | | (cond $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($else:tt $brace:tt $($dup:tt)*) else {$($block:tt)*} $($rest:tt)*) => { |
197 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $else $brace) $($parse)*} ($($rest)*) $($rest)*) |
198 | | }; |
199 | | |
200 | | (cond $stack:tt $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => { |
201 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) $parse $dup $($rest)*) |
202 | | }; |
203 | | |
204 | | // atomic expressions |
205 | | |
206 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($content:tt)*) $($rest:tt)*) => { |
207 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*) |
208 | | }; |
209 | | |
210 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bracket:tt $($dup:tt)*) [$($array:tt)*] $($rest:tt)*) => { |
211 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $bracket) $($parse)*} ($($rest)*) $($rest)*) |
212 | | }; |
213 | | |
214 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($block:tt)*} $($rest:tt)*) => { |
215 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*) |
216 | | }; |
217 | | |
218 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($loop:tt $block:tt $($dup:tt)*) loop {$($body:tt)*} $($rest:tt)*) => { |
219 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $loop $block) $($parse)*} ($($rest)*) $($rest)*) |
220 | | }; |
221 | | |
222 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($async:tt $block:tt $($dup:tt)*) async {$($body:tt)*} $($rest:tt)*) => { |
223 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $async $block) $($parse)*} ($($rest)*) $($rest)*) |
224 | | }; |
225 | | |
226 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($async:tt $move:tt $block:tt $($dup:tt)*) async move {$($body:tt)*} $($rest:tt)*) => { |
227 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $async $move $block) $($parse)*} ($($rest)*) $($rest)*) |
228 | | }; |
229 | | |
230 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($unsafe:tt $block:tt $($dup:tt)*) unsafe {$($body:tt)*} $($rest:tt)*) => { |
231 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $unsafe $block) $($parse)*} ($($rest)*) $($rest)*) |
232 | | }; |
233 | | |
234 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt $lit:literal $($rest:tt)*) => { |
235 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $lit) $($parse)*} ($($rest)*) $($rest)*) |
236 | | }; |
237 | | |
238 | | // path expressions |
239 | | |
240 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $($dup:tt)*) :: $ident:ident $($rest:tt)*) => { |
241 | | $crate::__parse_ensure!(epath (atom $stack) $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*) |
242 | | }; |
243 | | |
244 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt $ident:ident $($rest:tt)*) => { |
245 | | $crate::__parse_ensure!(epath (atom $stack) $bail ($($fuel)*) {($($buf)* $ident) $($parse)*} ($($rest)*) $($rest)*) |
246 | | }; |
247 | | |
248 | | (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($langle:tt $($dup:tt)*) < $($rest:tt)*) => { |
249 | | $crate::__parse_ensure!(type (qpath (epath (atom $stack))) $bail ($($fuel)*) {($($buf)* $langle) $($parse)*} ($($rest)*) $($rest)*) |
250 | | }; |
251 | | |
252 | | (epath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $langle:tt $($dup:tt)*) :: < $($rest:tt)*) => { |
253 | | $crate::__parse_ensure!(generic (epath $stack) $bail ($($fuel)*) {($($buf)* $colons $langle) $($parse)*} ($($rest)*) $($rest)*) |
254 | | }; |
255 | | |
256 | | (epath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $($dup:tt)*) :: << $($rest:tt)*) => { |
257 | | $crate::__parse_ensure!(generic (epath $stack) $bail ($($fuel)*) {($($buf)* $colons <) $($parse)*} (< $($rest)*) < $($rest)*) |
258 | | }; |
259 | | |
260 | | (epath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $($dup:tt)*) :: <- $($rest:tt)*) => { |
261 | | $crate::__parse_ensure!(generic (epath $stack) $bail ($($fuel)*) {($($buf)* $colons <) $($parse)*} (- $($rest)*) - $($rest)*) |
262 | | }; |
263 | | |
264 | | (epath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $($dup:tt)*) :: $ident:ident $($rest:tt)*) => { |
265 | | $crate::__parse_ensure!(epath $stack $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*) |
266 | | }; |
267 | | |
268 | | (epath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! ($($mac:tt)*) $($rest:tt)*) => { |
269 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*) |
270 | | }; |
271 | | |
272 | | (epath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! [$($mac:tt)*] $($rest:tt)*) => { |
273 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*) |
274 | | }; |
275 | | |
276 | | (epath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! {$($mac:tt)*} $($rest:tt)*) => { |
277 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*) |
278 | | }; |
279 | | |
280 | | (epath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => { |
281 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) $parse $dup $($rest)*) |
282 | | }; |
283 | | |
284 | | // trailer expressions |
285 | | |
286 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($call:tt)*) $($rest:tt)*) => { |
287 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*) |
288 | | }; |
289 | | |
290 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bracket:tt $($dup:tt)*) [$($index:tt)*] $($rest:tt)*) => { |
291 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $bracket) $($parse)*} ($($rest)*) $($rest)*) |
292 | | }; |
293 | | |
294 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($init:tt)*} $($rest:tt)*) => { |
295 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*) |
296 | | }; |
297 | | |
298 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($question:tt $($dup:tt)*) ? $($rest:tt)*) => { |
299 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $question) $($parse)*} ($($rest)*) $($rest)*) |
300 | | }; |
301 | | |
302 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $ident:tt $colons:tt $langle:tt $($dup:tt)*) . $i:ident :: < $($rest:tt)*) => { |
303 | | $crate::__parse_ensure!(generic (atom $stack) $bail ($($fuel)*) {($($buf)* $dot $ident $colons $langle) $($parse)*} ($($rest)*) $($rest)*) |
304 | | }; |
305 | | |
306 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $ident:tt $colons:tt $($dup:tt)*) . $i:ident :: << $($rest:tt)*) => { |
307 | | $crate::__parse_ensure!(generic (atom $stack) $bail ($($fuel)*) {($($buf)* $dot $ident $colons <) $($parse)*} (< $($rest)*) < $($rest)*) |
308 | | }; |
309 | | |
310 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $ident:tt $colons:tt $($dup:tt)*) . $i:ident :: <- $($rest:tt)*) => { |
311 | | $crate::__parse_ensure!(generic (atom $stack) $bail ($($fuel)*) {($($buf)* $dot $ident $colons <) $($parse)*} (- $($rest)*) - $($rest)*) |
312 | | }; |
313 | | |
314 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $($dup:tt)*) . $field:ident $($rest:tt)*) => { |
315 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $dot $field) $($parse)*} ($($rest)*) $($rest)*) |
316 | | }; |
317 | | |
318 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dot:tt $index:tt $($dup:tt)*) . $lit:literal $($rest:tt)*) => { |
319 | | $crate::__parse_ensure!(atom $stack $bail ($($fuel)*) {($($buf)* $dot $index) $($parse)*} ($($rest)*) $($rest)*) |
320 | | }; |
321 | | |
322 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($as:tt $($dup:tt)*) as $($rest:tt)*) => { |
323 | | $crate::__parse_ensure!(type (atom $stack) $bail ($($fuel)*) {($($buf)* $as) $($parse)*} ($($rest)*) $($rest)*) |
324 | | }; |
325 | | |
326 | | // types |
327 | | |
328 | | (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bracket:tt $($dup:tt)*) [$($content:tt)*] $($rest:tt)*) => { |
329 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bracket) $($parse)*} ($($rest)*) $($rest)*) |
330 | | }; |
331 | | |
332 | | (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($content:tt)*) $($rest:tt)*) => { |
333 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*) |
334 | | }; |
335 | | |
336 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($star:tt $const:tt $($dup:tt)*) *const $($rest:tt)*) => { |
337 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $star $const) $($parse)*} ($($rest)*) $($rest)*) |
338 | | }; |
339 | | |
340 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($star:tt $mut:tt $($dup:tt)*) *mut $($rest:tt)*) => { |
341 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $star $mut) $($parse)*} ($($rest)*) $($rest)*) |
342 | | }; |
343 | | |
344 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $life:lifetime $mut:tt $($dup:tt)*) & $l:lifetime mut $($rest:tt)*) => { |
345 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $life $mut) $($parse)*} ($($rest)*) $($rest)*) |
346 | | }; |
347 | | |
348 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $mut:tt $($dup:tt)*) & mut $($rest:tt)*) => { |
349 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $mut) $($parse)*} ($($rest)*) $($rest)*) |
350 | | }; |
351 | | |
352 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $life:lifetime $($dup:tt)*) & $l:lifetime $($rest:tt)*) => { |
353 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $life) $($parse)*} ($($rest)*) $($rest)*) |
354 | | }; |
355 | | |
356 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) & $($rest:tt)*) => { |
357 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*) |
358 | | }; |
359 | | |
360 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $life:lifetime $mut:tt $($dup:tt)*) && $l:lifetime mut $($rest:tt)*) => { |
361 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $life $mut) $($parse)*} ($($rest)*) $($rest)*) |
362 | | }; |
363 | | |
364 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $mut:tt $($dup:tt)*) && mut $($rest:tt)*) => { |
365 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $mut) $($parse)*} ($($rest)*) $($rest)*) |
366 | | }; |
367 | | |
368 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $life:lifetime $($dup:tt)*) && $l:lifetime $($rest:tt)*) => { |
369 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and $life) $($parse)*} ($($rest)*) $($rest)*) |
370 | | }; |
371 | | |
372 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) && $($rest:tt)*) => { |
373 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*) |
374 | | }; |
375 | | |
376 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($unsafe:tt $(extern $($abi:literal)?)? fn $($dup:tt)*) unsafe $($rest:tt)*) => { |
377 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $unsafe) $($parse)*} ($($rest)*) $($rest)*) |
378 | | }; |
379 | | |
380 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($extern:tt $abi:literal fn $($dup:tt)*) extern $lit:literal $($rest:tt)*) => { |
381 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $extern $abi) $($parse)*} ($($rest)*) $($rest)*) |
382 | | }; |
383 | | |
384 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($extern:tt fn $($dup:tt)*) extern $($rest:tt)*) => { |
385 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $extern) $($parse)*} ($($rest)*) $($rest)*) |
386 | | }; |
387 | | |
388 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($fn:tt $paren:tt $arrow:tt $($dup:tt)*) fn ($($args:tt)*) -> $($rest:tt)*) => { |
389 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $fn $paren $arrow) $($parse)*} ($($rest)*) $($rest)*) |
390 | | }; |
391 | | |
392 | | (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($fn:tt $paren:tt $($dup:tt)*) fn ($($args:tt)*) $($rest:tt)*) => { |
393 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $fn $paren) $($parse)*} ($($rest)*) $($rest)*) |
394 | | }; |
395 | | |
396 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($impl:tt $($dup:tt)*) impl $($rest:tt)*) => { |
397 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $impl) $($parse)*} ($($rest)*) $($rest)*) |
398 | | }; |
399 | | |
400 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($dyn:tt $($dup:tt)*) dyn $($rest:tt)*) => { |
401 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $dyn) $($parse)*} ($($rest)*) $($rest)*) |
402 | | }; |
403 | | |
404 | | (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($wild:tt $($dup:tt)*) _ $($rest:tt)*) => { |
405 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $wild) $($parse)*} ($($rest)*) $($rest)*) |
406 | | }; |
407 | | |
408 | | (type ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($never:tt $($dup:tt)*) ! $($rest:tt)*) => { |
409 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $never) $($parse)*} ($($rest)*) $($rest)*) |
410 | | }; |
411 | | |
412 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($for:tt $langle:tt $($dup:tt)*) for < $($rest:tt)*) => { |
413 | | $crate::__parse_ensure!(generic (type $stack) $bail ($($fuel)*) {($($buf)* $for $langle) $($parse)*} ($($rest)*) $($rest)*) |
414 | | }; |
415 | | |
416 | | // path types |
417 | | |
418 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $($dup:tt)*) :: $ident:ident $($rest:tt)*) => { |
419 | | $crate::__parse_ensure!(tpath $stack $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*) |
420 | | }; |
421 | | |
422 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt $ident:ident $($rest:tt)*) => { |
423 | | $crate::__parse_ensure!(tpath $stack $bail ($($fuel)*) {($($buf)* $ident) $($parse)*} ($($rest)*) $($rest)*) |
424 | | }; |
425 | | |
426 | | (type $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($langle:tt $($dup:tt)*) < $($rest:tt)*) => { |
427 | | $crate::__parse_ensure!(type (qpath (tpath $stack)) $bail ($($fuel)*) {($($buf)* $langle) $($parse)*} ($($rest)*) $($rest)*) |
428 | | }; |
429 | | |
430 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($langle:tt $($dup:tt)*) < $($rest:tt)*) => { |
431 | | $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* $langle) $($parse)*} ($($rest)*) $($rest)*) |
432 | | }; |
433 | | |
434 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt << $($rest:tt)*) => { |
435 | | $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* <) $($parse)*} (< $($rest)*) < $($rest)*) |
436 | | }; |
437 | | |
438 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt <- $($rest:tt)*) => { |
439 | | $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* <) $($parse)*} (- $($rest)*) - $($rest)*) |
440 | | }; |
441 | | |
442 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $langle:tt $($dup:tt)*) :: < $($rest:tt)*) => { |
443 | | $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* $colons $langle) $($parse)*} ($($rest)*) $($rest)*) |
444 | | }; |
445 | | |
446 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $($dup:tt)*) :: << $($rest:tt)*) => { |
447 | | $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* $colons <) $($parse)*} (< $($rest)*) < $($rest)*) |
448 | | }; |
449 | | |
450 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $($dup:tt)*) :: <- $($rest:tt)*) => { |
451 | | $crate::__parse_ensure!(generic (tpath $stack) $bail ($($fuel)*) {($($buf)* $colons <) $($parse)*} (- $($rest)*) - $($rest)*) |
452 | | }; |
453 | | |
454 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $($dup:tt)*) :: $ident:ident $($rest:tt)*) => { |
455 | | $crate::__parse_ensure!(tpath $stack $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*) |
456 | | }; |
457 | | |
458 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $arrow:tt $($dup:tt)*) ($($args:tt)*) -> $($rest:tt)*) => { |
459 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $paren $arrow) $($parse)*} ($($rest)*) $($rest)*) |
460 | | }; |
461 | | |
462 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($args:tt)*) $($rest:tt)*) => { |
463 | | $crate::__parse_ensure!(object $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*) |
464 | | }; |
465 | | |
466 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $paren:tt $arrow:tt $($dup:tt)*) :: ($($args:tt)*) -> $($rest:tt)*) => { |
467 | | $crate::__parse_ensure!(type $stack $bail ($($fuel)*) {($($buf)* $colons $paren $arrow) $($parse)*} ($($rest)*) $($rest)*) |
468 | | }; |
469 | | |
470 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $paren:tt $($dup:tt)*) :: ($($args:tt)*) $($rest:tt)*) => { |
471 | | $crate::__parse_ensure!(object $stack $bail ($($fuel)*) {($($buf)* $colons $paren) $($parse)*} ($($rest)*) $($rest)*) |
472 | | }; |
473 | | |
474 | | (tpath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! ($($mac:tt)*) $($rest:tt)*) => { |
475 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*) |
476 | | }; |
477 | | |
478 | | (tpath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! [$($mac:tt)*] $($rest:tt)*) => { |
479 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*) |
480 | | }; |
481 | | |
482 | | (tpath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bang:tt $args:tt $($dup:tt)*) ! {$($mac:tt)*} $($rest:tt)*) => { |
483 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $bang $args) $($parse)*} ($($rest)*) $($rest)*) |
484 | | }; |
485 | | |
486 | | (tpath $stack:tt $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => { |
487 | | $crate::__parse_ensure!(object $stack $bail ($($fuel)*) $parse $dup $($rest)*) |
488 | | }; |
489 | | |
490 | | // qualified paths |
491 | | |
492 | | (qpath ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $colons:tt $($dup:tt)*) > :: $ident:ident $($rest:tt)*) => { |
493 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $rangle $colons $ident) $($parse)*} ($($rest)*) $($rest)*) |
494 | | }; |
495 | | |
496 | | (qpath $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($as:tt $($dup:tt)*) as $($rest:tt)*) => { |
497 | | $crate::__parse_ensure!(type (qpath $stack) $bail ($($fuel)*) {($($buf)* $as) $($parse)*} ($($rest)*) $($rest)*) |
498 | | }; |
499 | | |
500 | | // trait objects |
501 | | |
502 | | (object (arglist $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($plus:tt $colons:tt $($dup:tt)*) + :: $ident:ident $($rest:tt)*) => { |
503 | | $crate::__parse_ensure!(tpath (arglist $stack) $bail ($($fuel)*) {($($buf)* $plus $colons $ident) $($parse)*} ($($rest)*) $($rest)*) |
504 | | }; |
505 | | |
506 | | (object (arglist $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($plus:tt $($dup:tt)*) + $ident:ident $($rest:tt)*) => { |
507 | | $crate::__parse_ensure!(tpath (arglist $stack) $bail ($($fuel)*) {($($buf)* $plus $ident) $($parse)*} ($($rest)*) $($rest)*) |
508 | | }; |
509 | | |
510 | | (object ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => { |
511 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) $parse $dup $($rest)*) |
512 | | }; |
513 | | |
514 | | // angle bracketed generic arguments |
515 | | |
516 | | (generic ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $($dup:tt)*) > $($rest:tt)*) => { |
517 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $rangle) $($parse)*} ($($rest)*) $($rest)*) |
518 | | }; |
519 | | |
520 | | (generic ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt >> $($rest:tt)*) => { |
521 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* >) $($parse)*} (> $($rest)*) > $($rest)*) |
522 | | }; |
523 | | |
524 | | (generic $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt $lit:literal $($rest:tt)*) => { |
525 | | $crate::__parse_ensure!(arglist $stack $bail ($($fuel)*) {($($buf)* $lit) $($parse)*} ($($rest)*) $($rest)*) |
526 | | }; |
527 | | |
528 | | (generic $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($block:tt)*} $($rest:tt)*) => { |
529 | | $crate::__parse_ensure!(arglist $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*) |
530 | | }; |
531 | | |
532 | | (generic $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt $life:lifetime $($rest:tt)*) => { |
533 | | $crate::__parse_ensure!(arglist $stack $bail ($($fuel)*) {($($buf)* $life) $($parse)*} ($($rest)*) $($rest)*) |
534 | | }; |
535 | | |
536 | | (generic $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($assoc:ident $eq:tt $($dup:tt)*) $ident:ident = $($rest:tt)*) => { |
537 | | $crate::__parse_ensure!(type (arglist $stack) $bail ($($fuel)*) {($($buf)* $assoc $eq) $($parse)*} ($($rest)*) $($rest)*) |
538 | | }; |
539 | | |
540 | | (generic $stack:tt $bail:tt (~$($fuel:tt)*) $parse:tt $dup:tt $($rest:tt)*) => { |
541 | | $crate::__parse_ensure!(type (arglist $stack) $bail ($($fuel)*) $parse $dup $($rest)*) |
542 | | }; |
543 | | |
544 | | (arglist $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($comma:tt $($dup:tt)*) , $($rest:tt)*) => { |
545 | | $crate::__parse_ensure!(generic $stack $bail ($($fuel)*) {($($buf)* $comma) $($parse)*} ($($rest)*) $($rest)*) |
546 | | }; |
547 | | |
548 | | (arglist ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rangle:tt $($dup:tt)*) > $($rest:tt)*) => { |
549 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* $rangle) $($parse)*} ($($rest)*) $($rest)*) |
550 | | }; |
551 | | |
552 | | (arglist ($pop:ident $stack:tt) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt >> $($rest:tt)*) => { |
553 | | $crate::__parse_ensure!($pop $stack $bail ($($fuel)*) {($($buf)* >) $($parse)*} (> $($rest)*) > $($rest)*) |
554 | | }; |
555 | | |
556 | | // patterns |
557 | | |
558 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($pipe:tt $($dup:tt)*) | $($rest:tt)*) => { |
559 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $pipe) $($parse)*} ($($rest)*) $($rest)*) |
560 | | }; |
561 | | |
562 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($eq:tt $($dup:tt)*) = $($rest:tt)*) => { |
563 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $eq) $($parse)*} ($($rest)*) $($rest)*) |
564 | | }; |
565 | | |
566 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($in:tt $($dup:tt)*) in $($rest:tt)*) => { |
567 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $in) $($parse)*} ($($rest)*) $($rest)*) |
568 | | }; |
569 | | |
570 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($ref:tt $($dup:tt)*) ref $($rest:tt)*) => { |
571 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $ref) $($parse)*} ($($rest)*) $($rest)*) |
572 | | }; |
573 | | |
574 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($mut:tt $($dup:tt)*) mut $($rest:tt)*) => { |
575 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $mut) $($parse)*} ($($rest)*) $($rest)*) |
576 | | }; |
577 | | |
578 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($at:tt $($dup:tt)*) @ $($rest:tt)*) => { |
579 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $at) $($parse)*} ($($rest)*) $($rest)*) |
580 | | }; |
581 | | |
582 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt $lit:literal $($rest:tt)*) => { |
583 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $lit) $($parse)*} ($($rest)*) $($rest)*) |
584 | | }; |
585 | | |
586 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($range:tt $($dup:tt)*) .. $($rest:tt)*) => { |
587 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $range) $($parse)*} ($($rest)*) $($rest)*) |
588 | | }; |
589 | | |
590 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($range:tt $($dup:tt)*) ..= $($rest:tt)*) => { |
591 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $range) $($parse)*} ($($rest)*) $($rest)*) |
592 | | }; |
593 | | |
594 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) & $($rest:tt)*) => { |
595 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*) |
596 | | }; |
597 | | |
598 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $($dup:tt)*) && $($rest:tt)*) => { |
599 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $andand) $($parse)*} ($($rest)*) $($rest)*) |
600 | | }; |
601 | | |
602 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($paren:tt $($dup:tt)*) ($($content:tt)*) $($rest:tt)*) => { |
603 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $paren) $($parse)*} ($($rest)*) $($rest)*) |
604 | | }; |
605 | | |
606 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bracket:tt $($dup:tt)*) [$($content:tt)*] $($rest:tt)*) => { |
607 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $bracket) $($parse)*} ($($rest)*) $($rest)*) |
608 | | }; |
609 | | |
610 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($brace:tt $($dup:tt)*) {$($content:tt)*} $($rest:tt)*) => { |
611 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $brace) $($parse)*} ($($rest)*) $($rest)*) |
612 | | }; |
613 | | |
614 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($wild:tt $($dup:tt)*) _ $($rest:tt)*) => { |
615 | | $crate::__parse_ensure!(pat $stack $bail ($($fuel)*) {($($buf)* $wild) $($parse)*} ($($rest)*) $($rest)*) |
616 | | }; |
617 | | |
618 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($colons:tt $($dup:tt)*) :: $ident:ident $($rest:tt)*) => { |
619 | | $crate::__parse_ensure!(epath (pat $stack) $bail ($($fuel)*) {($($buf)* $colons $ident) $($parse)*} ($($rest)*) $($rest)*) |
620 | | }; |
621 | | |
622 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} $dup:tt $ident:ident $($rest:tt)*) => { |
623 | | $crate::__parse_ensure!(epath (pat $stack) $bail ($($fuel)*) {($($buf)* $ident) $($parse)*} ($($rest)*) $($rest)*) |
624 | | }; |
625 | | |
626 | | (pat $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($langle:tt $($dup:tt)*) < $($rest:tt)*) => { |
627 | | $crate::__parse_ensure!(type (qpath (epath (pat $stack))) $bail ($($fuel)*) {($($buf)* $langle) $($parse)*} ($($rest)*) $($rest)*) |
628 | | }; |
629 | | |
630 | | // high precedence binary operators |
631 | | |
632 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($add:tt $($dup:tt)*) + $($rest:tt)*) => { |
633 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $add) $($parse)*} ($($rest)*) $($rest)*) |
634 | | }; |
635 | | |
636 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($sub:tt $($dup:tt)*) - $($rest:tt)*) => { |
637 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $sub) $($parse)*} ($($rest)*) $($rest)*) |
638 | | }; |
639 | | |
640 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($mul:tt $($dup:tt)*) * $($rest:tt)*) => { |
641 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $mul) $($parse)*} ($($rest)*) $($rest)*) |
642 | | }; |
643 | | |
644 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($div:tt $($dup:tt)*) / $($rest:tt)*) => { |
645 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $div) $($parse)*} ($($rest)*) $($rest)*) |
646 | | }; |
647 | | |
648 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($rem:tt $($dup:tt)*) % $($rest:tt)*) => { |
649 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $rem) $($parse)*} ($($rest)*) $($rest)*) |
650 | | }; |
651 | | |
652 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitxor:tt $($dup:tt)*) ^ $($rest:tt)*) => { |
653 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $bitxor) $($parse)*} ($($rest)*) $($rest)*) |
654 | | }; |
655 | | |
656 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitand:tt $($dup:tt)*) & $($rest:tt)*) => { |
657 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $bitand) $($parse)*} ($($rest)*) $($rest)*) |
658 | | }; |
659 | | |
660 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitor:tt $($dup:tt)*) | $($rest:tt)*) => { |
661 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $bitor) $($parse)*} ($($rest)*) $($rest)*) |
662 | | }; |
663 | | |
664 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($shl:tt $($dup:tt)*) << $($rest:tt)*) => { |
665 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $shl) $($parse)*} ($($rest)*) $($rest)*) |
666 | | }; |
667 | | |
668 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($shr:tt $($dup:tt)*) >> $($rest:tt)*) => { |
669 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $shr) $($parse)*} ($($rest)*) $($rest)*) |
670 | | }; |
671 | | |
672 | | // comparison binary operators |
673 | | |
674 | | (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($eq:tt $($dup:tt)*) == $($rest:tt)*) => { |
675 | | $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $eq} ($($rest)*) $($rest)*) |
676 | | }; |
677 | | |
678 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($eq:tt $($dup:tt)*) == $($rest:tt)*) => { |
679 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $eq) $($parse)*} ($($rest)*) $($rest)*) |
680 | | }; |
681 | | |
682 | | (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($le:tt $($dup:tt)*) <= $($rest:tt)*) => { |
683 | | $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $le} ($($rest)*) $($rest)*) |
684 | | }; |
685 | | |
686 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($le:tt $($dup:tt)*) <= $($rest:tt)*) => { |
687 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $le) $($parse)*} ($($rest)*) $($rest)*) |
688 | | }; |
689 | | |
690 | | (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($lt:tt $($dup:tt)*) < $($rest:tt)*) => { |
691 | | $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $lt} ($($rest)*) $($rest)*) |
692 | | }; |
693 | | |
694 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($lt:tt $($dup:tt)*) < $($rest:tt)*) => { |
695 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $lt) $($parse)*} ($($rest)*) $($rest)*) |
696 | | }; |
697 | | |
698 | | (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($ne:tt $($dup:tt)*) != $($rest:tt)*) => { |
699 | | $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $ne} ($($rest)*) $($rest)*) |
700 | | }; |
701 | | |
702 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($ne:tt $($dup:tt)*) != $($rest:tt)*) => { |
703 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $ne) $($parse)*} ($($rest)*) $($rest)*) |
704 | | }; |
705 | | |
706 | | (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($ge:tt $($dup:tt)*) >= $($rest:tt)*) => { |
707 | | $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $ge} ($($rest)*) $($rest)*) |
708 | | }; |
709 | | |
710 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($ge:tt $($dup:tt)*) >= $($rest:tt)*) => { |
711 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $ge) $($parse)*} ($($rest)*) $($rest)*) |
712 | | }; |
713 | | |
714 | | (atom () $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($gt:tt $($dup:tt)*) > $($rest:tt)*) => { |
715 | | $crate::__parse_ensure!(0 () $bail ($($fuel)*) {() $($parse)* ($($buf)*) $gt} ($($rest)*) $($rest)*) |
716 | | }; |
717 | | |
718 | | (atom $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)+) $($parse:tt)*} ($gt:tt $($dup:tt)*) > $($rest:tt)*) => { |
719 | | $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $gt) $($parse)*} ($($rest)*) $($rest)*) |
720 | | }; |
721 | | |
722 | | // low precedence binary operators |
723 | | |
724 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) && $($rest:tt)*) => { |
725 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*) |
726 | | }; |
727 | | |
728 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($or:tt $($dup:tt)*) || $($rest:tt)*) => { |
729 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $or) $($parse)*} ($($rest)*) $($rest)*) |
730 | | }; |
731 | | |
732 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($assign:tt $($dup:tt)*) = $($rest:tt)*) => { |
733 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $assign) $($parse)*} ($($rest)*) $($rest)*) |
734 | | }; |
735 | | |
736 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($addeq:tt $($dup:tt)*) += $($rest:tt)*) => { |
737 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $addeq) $($parse)*} ($($rest)*) $($rest)*) |
738 | | }; |
739 | | |
740 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($subeq:tt $($dup:tt)*) -= $($rest:tt)*) => { |
741 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $subeq) $($parse)*} ($($rest)*) $($rest)*) |
742 | | }; |
743 | | |
744 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($muleq:tt $($dup:tt)*) *= $($rest:tt)*) => { |
745 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $muleq) $($parse)*} ($($rest)*) $($rest)*) |
746 | | }; |
747 | | |
748 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($diveq:tt $($dup:tt)*) /= $($rest:tt)*) => { |
749 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $diveq) $($parse)*} ($($rest)*) $($rest)*) |
750 | | }; |
751 | | |
752 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($remeq:tt $($dup:tt)*) %= $($rest:tt)*) => { |
753 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $remeq) $($parse)*} ($($rest)*) $($rest)*) |
754 | | }; |
755 | | |
756 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitxoreq:tt $($dup:tt)*) ^= $($rest:tt)*) => { |
757 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $bitxoreq) $($parse)*} ($($rest)*) $($rest)*) |
758 | | }; |
759 | | |
760 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitandeq:tt $($dup:tt)*) &= $($rest:tt)*) => { |
761 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $bitandeq) $($parse)*} ($($rest)*) $($rest)*) |
762 | | }; |
763 | | |
764 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($bitoreq:tt $($dup:tt)*) |= $($rest:tt)*) => { |
765 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $bitoreq) $($parse)*} ($($rest)*) $($rest)*) |
766 | | }; |
767 | | |
768 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($shleq:tt $($dup:tt)*) <<= $($rest:tt)*) => { |
769 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $shleq) $($parse)*} ($($rest)*) $($rest)*) |
770 | | }; |
771 | | |
772 | | (atom ($($stack:tt)+) $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($shreq:tt $($dup:tt)*) >>= $($rest:tt)*) => { |
773 | | $crate::__parse_ensure!(0 ($($stack)*) $bail ($($fuel)*) {($($buf)* $shreq) $($parse)*} ($($rest)*) $($rest)*) |
774 | | }; |
775 | | |
776 | | // unrecognized expression |
777 | | |
778 | | ($state:tt $stack:tt ($($bail:tt)*) $($rest:tt)*) => { |
779 | | $crate::__fallback_ensure!($($bail)*) |
780 | | }; |
781 | | } |
782 | | |
783 | | #[doc(hidden)] |
784 | | #[macro_export] |
785 | | macro_rules! __fancy_ensure { |
786 | | ($lhs:expr, $op:tt, $rhs:expr) => { |
787 | | match (&$lhs, &$rhs) { |
788 | | (lhs, rhs) => { |
789 | | if !(lhs $op rhs) { |
790 | | #[allow(unused_imports)] |
791 | | use $crate::__private::{BothDebug, NotBothDebug}; |
792 | | return Err((lhs, rhs).__dispatch_ensure( |
793 | | $crate::__private::concat!( |
794 | | "Condition failed: `", |
795 | | $crate::__private::stringify!($lhs), |
796 | | " ", |
797 | | $crate::__private::stringify!($op), |
798 | | " ", |
799 | | $crate::__private::stringify!($rhs), |
800 | | "`", |
801 | | ), |
802 | | )); |
803 | | } |
804 | | } |
805 | | } |
806 | | }; |
807 | | } |
808 | | |
809 | | #[doc(hidden)] |
810 | | #[macro_export] |
811 | | macro_rules! __fallback_ensure { |
812 | | ($cond:expr $(,)?) => { |
813 | | if !$cond { |
814 | | return $crate::__private::Err($crate::Error::msg( |
815 | | $crate::__private::concat!("Condition failed: `", $crate::__private::stringify!($cond), "`") |
816 | | )); |
817 | | } |
818 | | }; |
819 | | ($cond:expr, $msg:literal $(,)?) => { |
820 | | if !$cond { |
821 | | return $crate::__private::Err($crate::__anyhow!($msg)); |
822 | | } |
823 | | }; |
824 | | ($cond:expr, $err:expr $(,)?) => { |
825 | | if !$cond { |
826 | | return $crate::__private::Err($crate::__anyhow!($err)); |
827 | | } |
828 | | }; |
829 | | ($cond:expr, $fmt:expr, $($arg:tt)*) => { |
830 | | if !$cond { |
831 | | return $crate::__private::Err($crate::__anyhow!($fmt, $($arg)*)); |
832 | | } |
833 | | }; |
834 | | } |