1 // Copyright 2022 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //      http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 use std::fmt::{Display, Error, Formatter};
16 
17 /// Encapsulates a location in source code.
18 ///
19 /// This is intended to report the location of an assertion which failed to
20 /// stdout.
21 ///
22 /// **For internal use only. API stablility is not guaranteed!**
23 #[doc(hidden)]
24 pub struct SourceLocation {
25     file: &'static str,
26     line: u32,
27     column: u32,
28 }
29 
30 impl SourceLocation {
31     /// Constructs a new [`SourceLocation`].
32     ///
33     /// **For internal use only. API stablility is not guaranteed!**
34     #[doc(hidden)]
new(file: &'static str, line: u32, column: u32) -> Self35     pub fn new(file: &'static str, line: u32, column: u32) -> Self {
36         Self { file, line, column }
37     }
38 }
39 
40 impl Display for SourceLocation {
fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>41     fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error> {
42         write!(f, "  at {}:{}:{}", self.file, self.line, self.column)
43     }
44 }
45