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use std::error;
use std::fmt;
use std::io::Error as ioError;
#[derive(Debug)]
pub enum ProfError {
RegexError,
InvalidProfiler,
InvalidBinary,
InvalidNum,
InvalidSortMetric,
IOError(ioError),
UTF8Error,
MisalignedData,
CompilationError(String, String),
TomlError,
ReadManifestError,
NoNameError,
NoTargetDirectory,
OutOfMemoryError,
CliError,
}
impl fmt::Display for ProfError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
ProfError::RegexError => {
write!(f,
"\x1b[1;31merror: \x1b[0mRegex error -- please file a bug. In bug report, \
please include the original output file from profiler, e.g. from \
valgrind --tool=cachegrind --cachegrind-out-file=cachegrind.txt")
}
ProfError::InvalidProfiler => {
write!(f,
"\x1b[1;31merror: \x1b[0mInvalid profiler. cargo profiler currently \
supports callgrind and cachegrind.")
}
ProfError::InvalidBinary => {
write!(f,
"\x1b[1;31merror: \x1b[0mInvalid binary. make sure binary exists.")
}
ProfError::InvalidNum => {
write!(f,
"\x1b[1;31merror: \x1b[0mInvalid number. make sure number is a positive \
integer.")
}
ProfError::InvalidSortMetric => {
write!(f,
"\x1b[1;31merror: \x1b[0mInvalid metric to sort on. available cachegrind \
metrics are \nir, i1mr, ilmr, dr, d1mr, dlmr, dw, d1mw, and dlmw. Check \
README for details on these metrics.")
}
ProfError::IOError(ref err) => {
write!(f,
"\x1b[1;31merror: \x1b[0mIO error: {} -- please file a bug.",
err)
}
ProfError::UTF8Error => {
write!(f,
"\x1b[1;31merror: \x1b[0mCLI Utf8 error -- please file a bug.")
}
ProfError::MisalignedData => {
write!(f,
"\x1b[1;31merror: \x1b[0mMisaligned data arrays due to regex error -- \
please file a bug.")
}
ProfError::CompilationError(ref package_name, ref stderr) => {
write!(f,
"\x1b[1;31merror: \x1b[0mFailed to compile {}.\n\n{}",
package_name,
stderr)
}
ProfError::TomlError => {
write!(f,
"\x1b[1;31merror: \x1b[0mError in parsing Cargo.toml to derive package \
name. Make sure package name is directly under [package] tag.")
}
ProfError::ReadManifestError => {
write!(f,
"\x1b[1;31merror: \x1b[0mCargo.toml missing. Are you sure you're in a Rust \
project?")
}
ProfError::NoNameError => {
write!(f,
"\x1b[1;31merror: \x1b[0mNo package name found in Cargo.toml. Run \
cargo read-manifest to make sure everything looks okay. Otherwise please \
submit bug.")
}
ProfError::NoTargetDirectory => {
write!(f,
"\x1b[1;31merror: \x1b[0mNo target output directory found in project. \
Binary must be in target/debug/ or target/release/, or specify binary \
path explicitly with --bin argument.")
}
ProfError::OutOfMemoryError => {
write!(f,
"\x1b[1;31merror: \x1b[0mValgrind's memory management: out of memory. \
Valgrind cannot continue. Sorry. ")
}
ProfError::CliError => {
write!(f,
"\x1b[1;31merror: \x1b[0mError in valgrind cli call. Make sure valgrind is \
installed properly.")
}
}
}
}
impl error::Error for ProfError {
fn description(&self) -> &str {
match *self {
ProfError::RegexError => "Regex error. file bug.",
ProfError::InvalidProfiler => "Invalid Profiler.",
ProfError::InvalidBinary => "Invalid Binary.",
ProfError::InvalidNum => "Invalid number.",
ProfError::InvalidSortMetric => "Invalid sort metric.",
ProfError::MisalignedData => "Misaligned Data. File bug.",
ProfError::CompilationError(_, _) => {
"Failed to compile. Run cargo build to get compilation error."
}
ProfError::TomlError => "Error in parsing Cargo.toml.",
ProfError::ReadManifestError => "Error in reading the manifest of this crate.",
ProfError::NoNameError => "No package name found in Cargo.toml",
ProfError::NoTargetDirectory => "No target output directory found in project.",
ProfError::IOError(ref err) => err.description(),
ProfError::OutOfMemoryError => "out of memory.",
ProfError::CliError => "make sure valgrind is installed properly.",
ProfError::UTF8Error => "utf8 error. file bug.",
}
}
fn cause(&self) -> Option<&error::Error> {
match *self {
ProfError::RegexError => None,
ProfError::InvalidProfiler => None,
ProfError::InvalidBinary => None,
ProfError::InvalidNum => None,
ProfError::InvalidSortMetric => None,
ProfError::MisalignedData => None,
ProfError::TomlError => None,
ProfError::IOError(ref err) => Some(err),
ProfError::CompilationError(_, _) => None,
ProfError::ReadManifestError => None,
ProfError::NoNameError => None,
ProfError::NoTargetDirectory => None,
ProfError::OutOfMemoryError => None,
ProfError::CliError => None,
ProfError::UTF8Error => None,
}
}
}
impl From<ioError> for ProfError {
fn from(err: ioError) -> ProfError {
ProfError::IOError(err)
}
}