use crate::common::*; #[derive(Debug)] pub(crate) enum RuntimeError<'src> { ArgumentCountMismatch { recipe: &'src str, parameters: Vec<&'src Parameter<'src>>, found: usize, min: usize, max: usize, }, Backtick { token: Token<'src>, output_error: OutputError, }, Code { recipe: &'src str, line_number: Option, code: i32, }, Cygpath { recipe: &'src str, output_error: OutputError, }, Dotenv { dotenv_error: dotenv::Error, }, FunctionCall { function: Name<'src>, message: String, }, Internal { message: String, }, IoError { recipe: &'src str, io_error: io::Error, }, Shebang { recipe: &'src str, command: String, argument: Option, io_error: io::Error, }, Signal { recipe: &'src str, line_number: Option, signal: i32, }, TmpdirIoError { recipe: &'src str, io_error: io::Error, }, UnknownOverrides { overrides: Vec<&'src str>, }, UnknownRecipes { recipes: Vec<&'src str>, suggestion: Option<&'src str>, }, Unknown { recipe: &'src str, line_number: Option, }, NoRecipes, DefaultRecipeRequiresArguments { recipe: &'src str, min_arguments: usize, }, } impl<'src> Error for RuntimeError<'src> { fn code(&self) -> i32 { match *self { Self::Code { code, .. } => code, Self::Backtick { output_error: OutputError::Code(code), .. } => code, _ => EXIT_FAILURE, } } } impl<'src> RuntimeError<'src> { fn context(&self) -> Option { use RuntimeError::*; match self { FunctionCall { function, .. } => Some(function.token()), Backtick { token, .. } => Some(*token), _ => None, } } } impl<'src> Display for RuntimeError<'src> { fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> { use RuntimeError::*; let color = if f.alternate() { Color::always() } else { Color::never() }; let message = color.message(); write!(f, "{}", message.prefix())?; match self { UnknownRecipes { recipes, suggestion, } => { write!( f, "Justfile does not contain {} {}.", Count("recipe", recipes.len()), List::or_ticked(recipes), )?; if let Some(suggestion) = *suggestion { write!(f, "\nDid you mean `{}`?", suggestion)?; } } UnknownOverrides { overrides } => { write!( f, "{} {} overridden on the command line but not present in justfile", Count("Variable", overrides.len()), List::and_ticked(overrides), )?; } ArgumentCountMismatch { recipe, parameters, found, min, max, } => { if min == max { let expected = min; write!( f, "Recipe `{}` got {} {} but {}takes {}", recipe, found, Count("argument", *found), if expected < found { "only " } else { "" }, expected )?; } else if found < min { write!( f, "Recipe `{}` got {} {} but takes at least {}", recipe, found, Count("argument", *found), min )?; } else if found > max { write!( f, "Recipe `{}` got {} {} but takes at most {}", recipe, found, Count("argument", *found), max )?; } write!(f, "\nusage:\n just {}", recipe)?; for param in parameters { if color.stderr().active() { write!(f, " {:#}", param)?; } else { write!(f, " {}", param)?; } } } Code { recipe, line_number, code, } => { if let Some(n) = line_number { write!( f, "Recipe `{}` failed on line {} with exit code {}", recipe, n, code )?; } else { write!(f, "Recipe `{}` failed with exit code {}", recipe, code)?; } } Cygpath { recipe, output_error, } => match output_error { OutputError::Code(code) => { write!( f, "Cygpath failed with exit code {} while translating recipe `{}` \ shebang interpreter path", code, recipe )?; } OutputError::Signal(signal) => { write!( f, "Cygpath terminated by signal {} while translating recipe `{}` \ shebang interpreter path", signal, recipe )?; } OutputError::Unknown => { write!( f, "Cygpath experienced an unknown failure while translating recipe `{}` \ shebang interpreter path", recipe )?; } OutputError::Io(io_error) => { match io_error.kind() { io::ErrorKind::NotFound => write!( f, "Could not find `cygpath` executable to translate recipe `{}` \ shebang interpreter path:\n{}", recipe, io_error ), io::ErrorKind::PermissionDenied => write!( f, "Could not run `cygpath` executable to translate recipe `{}` \ shebang interpreter path:\n{}", recipe, io_error ), _ => write!(f, "Could not run `cygpath` executable:\n{}", io_error), }?; } OutputError::Utf8(utf8_error) => { write!( f, "Cygpath successfully translated recipe `{}` shebang interpreter path, \ but output was not utf8: {}", recipe, utf8_error )?; } }, Dotenv { dotenv_error } => { writeln!(f, "Failed to load .env: {}", dotenv_error)?; } FunctionCall { function, message } => { writeln!( f, "Call to function `{}` failed: {}", function.lexeme(), message )?; } Shebang { recipe, command, argument, io_error, } => { if let Some(argument) = argument { write!( f, "Recipe `{}` with shebang `#!{} {}` execution error: {}", recipe, command, argument, io_error )?; } else { write!( f, "Recipe `{}` with shebang `#!{}` execution error: {}", recipe, command, io_error )?; } } Signal { recipe, line_number, signal, } => { if let Some(n) = line_number { write!( f, "Recipe `{}` was terminated on line {} by signal {}", recipe, n, signal )?; } else { write!(f, "Recipe `{}` was terminated by signal {}", recipe, signal)?; } } Unknown { recipe, line_number, } => { if let Some(n) = line_number { write!( f, "Recipe `{}` failed on line {} for an unknown reason", recipe, n )?; } else { write!(f, "Recipe `{}` failed for an unknown reason", recipe)?; } } IoError { recipe, io_error } => { match io_error.kind() { io::ErrorKind::NotFound => writeln!( f, "Recipe `{}` could not be run because just could not find `sh`:{}", recipe, io_error ), io::ErrorKind::PermissionDenied => writeln!( f, "Recipe `{}` could not be run because just could not run `sh`:{}", recipe, io_error ), _ => writeln!( f, "Recipe `{}` could not be run because of an IO error while \ launching `sh`:{}", recipe, io_error ), }?; } TmpdirIoError { recipe, io_error } => writeln!( f, "Recipe `{}` could not be run because of an IO error while trying \ to create a temporary directory or write a file to that directory`:{}", recipe, io_error )?, Backtick { output_error, .. } => match output_error { OutputError::Code(code) => { writeln!(f, "Backtick failed with exit code {}", code)?; } OutputError::Signal(signal) => { writeln!(f, "Backtick was terminated by signal {}", signal)?; } OutputError::Unknown => { writeln!(f, "Backtick failed for an unknown reason")?; } OutputError::Io(io_error) => { match io_error.kind() { io::ErrorKind::NotFound => write!( f, "Backtick could not be run because just could not find `sh`:\n{}", io_error ), io::ErrorKind::PermissionDenied => write!( f, "Backtick could not be run because just could not run `sh`:\n{}", io_error ), _ => write!( f, "Backtick could not be run because of an IO \ error while launching `sh`:\n{}", io_error ), }?; } OutputError::Utf8(utf8_error) => { writeln!( f, "Backtick succeeded but stdout was not utf8: {}", utf8_error )?; } }, NoRecipes => { writeln!(f, "Justfile contains no recipes.",)?; } DefaultRecipeRequiresArguments { recipe, min_arguments, } => { writeln!( f, "Recipe `{}` cannot be used as default recipe since it requires at least {} {}.", recipe, min_arguments, Count("argument", *min_arguments), )?; } Internal { message } => { write!( f, "Internal runtime error, this may indicate a bug in just: {} \ consider filing an issue: https://github.com/casey/just/issues/new", message )?; } } write!(f, "{}", message.suffix())?; if let Some(token) = self.context() { token.write_context(f, Color::fmt(f).error())?; } Ok(()) } }