pub struct FieldPath(pub Vec<LocIdent>);Expand description
A path of fields, that is a list, locating this field from the root of the configuration.
Tuple Fields§
§0: Vec<LocIdent>Implementations§
Source§impl FieldPath
impl FieldPath
pub fn new() -> Self
Sourcepub fn parse(caches: &mut CacheHub, input: String) -> Result<Self, ParseError>
pub fn parse(caches: &mut CacheHub, input: String) -> Result<Self, ParseError>
Parse a string as a query path. A query path is a sequence of dot-separated identifiers. Identifiers can be enclosed by double quotes when they contain characters that aren’t allowed inside bare identifiers. The accepted grammar is the same as a sequence of record accesses in Nickel, although string interpolation is forbidden.
§Post-conditions
If this function succeeds and returns Ok(field_path), then field_path.0 is non empty.
Indeed, there’s no such thing as a valid empty field path (at least from the parsing point
of view): if input is empty, or consists only of spaces, parse returns a parse error.
Sourcepub fn parse_opt(
cache: &mut CacheHub,
input: Option<String>,
) -> Result<Self, ParseError>
pub fn parse_opt( cache: &mut CacheHub, input: Option<String>, ) -> Result<Self, ParseError>
As Self::parse, but accepts an Option to accomodate for the absence of path. If the
input is None, Ok(FieldPath::default()) is returned (that is, an empty field path).
Trait Implementations§
impl Eq for FieldPath
impl StructuralPartialEq for FieldPath
Auto Trait Implementations§
impl Freeze for FieldPath
impl RefUnwindSafe for FieldPath
impl Send for FieldPath
impl Sync for FieldPath
impl Unpin for FieldPath
impl UnsafeUnpin for FieldPath
impl UnwindSafe for FieldPath
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