databend_common_ast/
parser_error.rs

1// Copyright 2021 Datafuse Labs
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
15use std::fmt::Display;
16use std::fmt::Formatter;
17
18use crate::span::Span;
19use crate::span::pretty_print_error;
20
21#[derive(Debug)]
22pub struct ParseError(pub Span, pub String);
23
24impl ParseError {
25    /// Pretty display the error message onto source if span is available.
26    pub fn display_with_source(mut self, source: &str) -> Self {
27        if let Some(span) = self.0.take() {
28            self.1 = pretty_print_error(source, vec![(span, self.1.to_string())]);
29        }
30        self
31    }
32}
33
34impl Display for ParseError {
35    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
36        write!(f, "{}", self.1)
37    }
38}
39
40impl std::error::Error for ParseError {}
databend_common_ast/parser_error.rs

databend_common_ast/
parser_error.rs
