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use std::fmt::Display;
#[derive(Clone, Debug)]
pub enum ErrorKind {
DuplicateAttrsKey {
key: String,
},
AttributeNotFound {
name: String,
},
TypeError {
expected: &'static str,
actual: &'static str,
},
Incomparable {
lhs: &'static str,
rhs: &'static str,
},
/// Resolving a user-supplied path literal failed in some way.
PathResolution(String),
/// Dynamic keys are not allowed in let.
DynamicKeyInLet(rnix::SyntaxNode),
/// Unknown variable in statically known scope.
UnknownStaticVariable,
/// Unknown variable in dynamic scope (with, rec, ...).
UnknownDynamicVariable(String),
/// User is defining the same variable twice at the same depth.
VariableAlreadyDefined(String),
/// Attempt to call something that is not callable.
NotCallable,
/// Infinite recursion encountered while forcing thunks.
InfiniteRecursion,
ParseErrors(Vec<rnix::parser::ParseError>),
AssertionFailed,
/// These are user-generated errors through builtins.
Throw(String),
Abort(String),
/// An error occured while forcing a thunk, and needs to be
/// chained up.
ThunkForce(Box<Error>),
}
#[derive(Clone, Debug)]
pub struct Error {
pub kind: ErrorKind,
pub span: codemap::Span,
}
impl Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
writeln!(f, "{:?}", self.kind)
}
}
pub type EvalResult<T> = Result<T, Error>;
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