1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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::error::Error;

use csv as csv_crate;

#[derive(Debug, Clone, PartialEq)]
pub enum ArrowError {
    MemoryError(String),
    ParseError(String),
    ComputeError(String),
    DivideByZero,
    CsvError(String),
    IoError(String),
}

impl From<::std::io::Error> for ArrowError {
    fn from(error: ::std::io::Error) -> Self {
        ArrowError::IoError(error.description().to_string())
    }
}

impl From<csv_crate::Error> for ArrowError {
    fn from(error: csv_crate::Error) -> Self {
        match error.kind() {
            csv_crate::ErrorKind::Io(error) => {
                ArrowError::CsvError(error.description().to_string())
            }
            csv_crate::ErrorKind::Utf8 {pos: _, err} => {
                ArrowError::CsvError(format!("Encountered UTF-8 error while reading CSV file: {:?}", err.description()))
            }
            csv_crate::ErrorKind::UnequalLengths {pos: _, expected_len, len} => {
              ArrowError::CsvError(
                  format!(
                      "Encountered unequal lengths between records on CSV file. Expected {} records, found {} records",
                      len,
                      expected_len
                  )
              )
            }
            _ => {
                ArrowError::CsvError("Error reading CSV file".to_string())
            }
        }
    }
}

pub type Result<T> = ::std::result::Result<T, ArrowError>;