Enum fst::RegexError
[−]
[src]
pub enum RegexError { Syntax(Error), CompiledTooBig(usize), TooManyStates(usize), NoLazy, NoWordBoundary, NoEmpty, NoBytes, }
An error that occurred while compiling a regular expression.
Variants
Syntax(Error)
A problem with the syntax of a regular expression.
CompiledTooBig(usize)
Too many instructions resulting from the regular expression.
The number given is the limit that was exceeded.
TooManyStates(usize)
Too many automata states resulting from the regular expression.
This is distinct from CompiledTooBig
because TooManyStates
refers
to the DFA construction where as CompiledTooBig
refers to the NFA
construction.
The number given is the limit that was exceeded.
NoLazy
Lazy quantifiers are not allowed (because they have no useful interpretation when used purely for automata intersection, as is the case in this crate).
NoWordBoundary
Word boundaries are currently not allowed.
This restriction may be lifted in the future.
NoEmpty
Empty or "zero width assertions" such as ^
or $
are currently
not allowed.
This restriction may be lifted in the future.
NoBytes
Byte literals such as (?-u:\xff)
are not allowed.
This restriction may be lifted in the future.