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xc2bit: Actually commit errors.rs file missing from last commit
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/* | ||
Copyright (c) 2016-2017, Robert Ou <rqou@robertou.com> and contributors | ||
All rights reserved. | ||
Redistribution and use in source and binary forms, with or without | ||
modification, are permitted provided that the following conditions are met: | ||
1. Redistributions of source code must retain the above copyright notice, | ||
this list of conditions and the following disclaimer. | ||
2. Redistributions in binary form must reproduce the above copyright notice, | ||
this list of conditions and the following disclaimer in the documentation | ||
and/or other materials provided with the distribution. | ||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | ||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | ||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
*/ | ||
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use std::error; | ||
use std::error::Error; | ||
use std::fmt; | ||
use std::num; | ||
use std::str; | ||
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#[derive(Debug, PartialEq, Eq)] | ||
pub enum JedParserError { | ||
MissingSTX, | ||
MissingETX, | ||
InvalidUtf8(str::Utf8Error), | ||
InvalidCharacter, | ||
UnexpectedEnd, | ||
BadFileChecksum, | ||
BadFuseChecksum, | ||
InvalidFuseIndex, | ||
MissingQF, | ||
MissingF, | ||
UnrecognizedField, | ||
} | ||
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impl error::Error for JedParserError { | ||
fn description(&self) -> &'static str { | ||
match *self { | ||
JedParserError::MissingSTX => "STX not found", | ||
JedParserError::MissingETX => "ETX not found", | ||
JedParserError::InvalidUtf8(_) => "invalid utf8 character", | ||
JedParserError::InvalidCharacter => "invalid character in field", | ||
JedParserError::UnexpectedEnd => "unexpected end of file", | ||
JedParserError::BadFileChecksum => "invalid file checksum", | ||
JedParserError::BadFuseChecksum => "invalid fuse checksum", | ||
JedParserError::InvalidFuseIndex => "invalid fuse index value", | ||
JedParserError::MissingQF => "missing QF field", | ||
JedParserError::MissingF => "missing F field", | ||
JedParserError::UnrecognizedField => "unrecognized field", | ||
} | ||
} | ||
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fn cause(&self) -> Option<&error::Error> { | ||
match *self { | ||
JedParserError::MissingSTX => None, | ||
JedParserError::MissingETX => None, | ||
JedParserError::InvalidUtf8(ref err) => Some(err), | ||
JedParserError::InvalidCharacter => None, | ||
JedParserError::UnexpectedEnd => None, | ||
JedParserError::BadFileChecksum => None, | ||
JedParserError::BadFuseChecksum => None, | ||
JedParserError::InvalidFuseIndex => None, | ||
JedParserError::MissingQF => None, | ||
JedParserError::MissingF => None, | ||
JedParserError::UnrecognizedField => None, | ||
} | ||
} | ||
} | ||
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impl fmt::Display for JedParserError { | ||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
if let Some(cause) = self.cause() { | ||
write!(f, "{}: {}", self.description(), cause) | ||
} else { | ||
write!(f, "{}", self.description()) | ||
} | ||
} | ||
} | ||
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impl From<str::Utf8Error> for JedParserError { | ||
fn from(err: str::Utf8Error) -> JedParserError { | ||
JedParserError::InvalidUtf8(err) | ||
} | ||
} | ||
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impl From<num::ParseIntError> for JedParserError { | ||
fn from(_: num::ParseIntError) -> JedParserError { | ||
JedParserError::InvalidCharacter | ||
} | ||
} | ||
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#[derive(Debug, PartialEq, Eq)] | ||
pub enum XC2BitError { | ||
JedParseError(JedParserError), | ||
BadDeviceName(String), | ||
WrongFuseCount, | ||
UnsupportedOeConfiguration((bool, bool, bool, bool)), | ||
UnsupportedZIAConfiguration(Vec<bool>), | ||
} | ||
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impl From<JedParserError> for XC2BitError { | ||
fn from(err: JedParserError) -> XC2BitError { | ||
XC2BitError::JedParseError(err) | ||
} | ||
} | ||
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impl error::Error for XC2BitError { | ||
fn description(&self) -> &'static str { | ||
match *self { | ||
XC2BitError::JedParseError(_) => ".jed parsing failed", | ||
XC2BitError::BadDeviceName(_) => "device name is invalid/unsupported", | ||
XC2BitError::WrongFuseCount => "wrong number of fuses", | ||
XC2BitError::UnsupportedOeConfiguration(_) => "unknown Oe field value", | ||
XC2BitError::UnsupportedZIAConfiguration(_) => "unknown ZIA selection bit pattern", | ||
} | ||
} | ||
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fn cause(&self) -> Option<&error::Error> { | ||
match *self { | ||
XC2BitError::JedParseError(ref err) => Some(err), | ||
XC2BitError::BadDeviceName(_) => None, | ||
XC2BitError::WrongFuseCount => None, | ||
XC2BitError::UnsupportedOeConfiguration(_) => None, | ||
XC2BitError::UnsupportedZIAConfiguration(_) => None, | ||
} | ||
} | ||
} | ||
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impl fmt::Display for XC2BitError { | ||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
match *self { | ||
XC2BitError::JedParseError(_) => { | ||
write!(f, "{}: {}", self.description(), self.cause().unwrap()) | ||
}, | ||
XC2BitError::BadDeviceName(ref devname) => { | ||
write!(f, "device name \"{}\" is invalid/unsupported", devname) | ||
}, | ||
XC2BitError::WrongFuseCount => { | ||
write!(f, "{}", self.description()) | ||
}, | ||
XC2BitError::UnsupportedOeConfiguration(bits) => { | ||
write!(f, "unknown Oe field value {}{}{}{}", | ||
if bits.0 {"1"} else {"0"}, if bits.1 {"1"} else {"0"}, | ||
if bits.2 {"1"} else {"0"}, if bits.3 {"1"} else {"0"}) | ||
}, | ||
XC2BitError::UnsupportedZIAConfiguration(ref bits) => { | ||
write!(f, "unknown ZIA selection bit pattern ")?; | ||
for bit in bits { | ||
write!(f, "{}", if *bit {"1"} else {"0"})?; | ||
} | ||
Ok(()) | ||
}, | ||
} | ||
} | ||
} |