Struct fluent_syntax::parser::ParserError [−][src]
Error containing information about an error encountered by the Fluent Parser.
Errors in Fluent Parser are non-fatal, and the syntax has been designed to allow for strong recovery.
In result ParserError
is designed to point at the slice of
the input that is most likely to be a complete fragment from after
the end of a valid entry, to the start of the next valid entry, with
the invalid syntax in the middle.
Example
use fluent_syntax::parser; use fluent_syntax::ast; let ftl = r#" key1 = Value 1 g@Rb@ge = #2y ds key2 = Value 2 "#; let (resource, errors) = parser::parse_runtime(ftl) .expect_err("Resource should contain errors."); assert_eq!( errors, vec![ parser::ParserError { pos: 18..19, slice: Some(17..35), kind: parser::ErrorKind::ExpectedToken('=') } ] ); assert_eq!( resource.body[0], ast::Entry::Message( ast::Message { id: ast::Identifier { name: "key1" }, value: Some(ast::Pattern { elements: vec![ ast::PatternElement::TextElement { value: "Value 1" }, ] }), attributes: vec![], comment: None, } ), ); assert_eq!( resource.body[1], ast::Entry::Junk { content: "g@Rb@ge = #2y ds\n\n" } ); assert_eq!( resource.body[2], ast::Entry::Message( ast::Message { id: ast::Identifier { name: "key2" }, value: Some(ast::Pattern { elements: vec![ ast::PatternElement::TextElement { value: "Value 2" }, ] }), attributes: vec![], comment: None, } ), );
The information contained in the ParserError
should allow the tooling
to display rich contextual annotations of the error slice, using
crates such as annotate-snippers
.
Fields
pos: Range<usize>
Precise location of where the parser encountered the error.
slice: Option<Range<usize>>
Slice of the input from the end of the last valid entry to the beginning of the next valid entry with the invalid syntax in the middle.
kind: ErrorKind
The type of the error that the parser encountered.
Trait Implementations
impl Clone for ParserError
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fn clone(&self) -> ParserError
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pub fn clone_from(&mut self, source: &Self)
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impl Debug for ParserError
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impl Display for ParserError
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impl Error for ParserError
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pub fn source(&self) -> Option<&(dyn Error + 'static)>
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pub fn backtrace(&self) -> Option<&Backtrace>
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pub fn description(&self) -> &str
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pub fn cause(&self) -> Option<&dyn Error>
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impl PartialEq<ParserError> for ParserError
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fn eq(&self, other: &ParserError) -> bool
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fn ne(&self, other: &ParserError) -> bool
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impl StructuralPartialEq for ParserError
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Auto Trait Implementations
impl RefUnwindSafe for ParserError
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impl Send for ParserError
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impl Sync for ParserError
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impl Unpin for ParserError
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impl UnwindSafe for ParserError
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,