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use std::error::Error;
use std::fmt::{Display, Formatter};
use csv as csv_crate;
#[derive(Debug, Clone, PartialEq)]
pub enum ArrowError {
MemoryError(String),
ParseError(String),
ComputeError(String),
DivideByZero,
CsvError(String),
JsonError(String),
IoError(String),
InvalidArgumentError(String),
ParquetError(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()),
}
}
}
impl From<::std::string::FromUtf8Error> for ArrowError {
fn from(error: std::string::FromUtf8Error) -> Self {
ArrowError::ParseError(error.description().to_string())
}
}
impl Display for ArrowError {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
match self {
&ArrowError::MemoryError(ref desc) => write!(f, "Memory error: {}", desc),
&ArrowError::ParseError(ref desc) => write!(f, "Parser error: {}", desc),
&ArrowError::ComputeError(ref desc) => write!(f, "Compute error: {}", desc),
&ArrowError::DivideByZero => write!(f, "Divide by zero error"),
&ArrowError::CsvError(ref desc) => write!(f, "Csv error: {}", desc),
&ArrowError::JsonError(ref desc) => write!(f, "Json error: {}", desc),
&ArrowError::IoError(ref desc) => write!(f, "Io error: {}", desc),
&ArrowError::InvalidArgumentError(ref desc) => {
write!(f, "Invalid argument error: {}", desc)
}
&ArrowError::ParquetError(ref desc) => {
write!(f, "Parquet argument error: {}", desc)
}
}
}
}
impl Error for ArrowError {}
pub type Result<T> = std::result::Result<T, ArrowError>;