databend-common-ast 0.2.2

// Copyright 2021 Datafuse Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use std::fmt::Display;
use std::fmt::Formatter;

use crate::span::pretty_print_error;
use crate::span::Span;

#[derive(Debug)]
pub struct ParseError(pub Span, pub String);

impl ParseError {
    /// Pretty display the error message onto source if span is available.
    pub fn display_with_source(mut self, source: &str) -> Self {
        if let Some(span) = self.0.take() {
            self.1 = pretty_print_error(source, vec![(span, self.1.to_string())]);
        }
        self
    }
}

impl Display for ParseError {
    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
        write!(f, "{}", self.1)
    }
}