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),
SchemaError(String),
ComputeError(String),
DivideByZero,
CsvError(String),
JsonError(String),
IoError(String),
InvalidArgumentError(String),
ParquetError(String),
DictionaryKeyOverflowError,
}
impl From<::std::io::Error> for ArrowError {
fn from(error: std::io::Error) -> Self {
ArrowError::IoError(error.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.to_string()),
csv_crate::ErrorKind::Utf8 { pos: _, err } => ArrowError::CsvError(format!(
"Encountered UTF-8 error while reading CSV file: {:?}",
err.to_string()
)),
csv_crate::ErrorKind::UnequalLengths {
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.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::SchemaError(ref desc) => write!(f, "Schema 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)
}
ArrowError::DictionaryKeyOverflowError => {
write!(f, "Dictionary key bigger than the key type")
}
}
}
}
impl Error for ArrowError {}
pub type Result<T> = std::result::Result<T, ArrowError>;