Struct lrlex::LRNonStreamingLexerDef

pub struct LRNonStreamingLexerDef<LexerTypesT: LexerTypes>
where
    usize: AsPrimitive<LexerTypesT::StorageT>,
{ /* private fields */ }

This struct represents, in essence, a .l file in memory. From it one can produce an LRNonStreamingLexer which actually lexes inputs.

Implementations

impl<StorageT: 'static + Debug + Hash + PrimInt + Unsigned, LexerTypesT: LexerTypes<StorageT = StorageT>> LRNonStreamingLexerDef<LexerTypesT>

where usize: AsPrimitive<StorageT>, LexerTypesT::StorageT: TryFrom<usize>,

pub fn new_with_options( s: &str, re_opts: RegexOptions, ) -> LexBuildResult<LRNonStreamingLexerDef<LexerTypesT>>

pub fn lexer<'lexer, 'input: 'lexer>( &'lexer self, s: &'input str, ) -> LRNonStreamingLexer<'lexer, 'input, LexerTypesT>

Return an LRNonStreamingLexer for the String s that will lex relative to this LRNonStreamingLexerDef.

Trait Implementations

impl<LexerTypesT: Debug + LexerTypes> Debug for LRNonStreamingLexerDef<LexerTypesT>

where usize: AsPrimitive<LexerTypesT::StorageT>, LexerTypesT::StorageT: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<LexerTypesT: LexerTypes> LexerDef<LexerTypesT> for LRNonStreamingLexerDef<LexerTypesT>

where usize: AsPrimitive<LexerTypesT::StorageT>, LexerTypesT::StorageT: TryFrom<usize>,

fn from_str(s: &str) -> LexBuildResult<LRNonStreamingLexerDef<LexerTypesT>>

Instantiate a lexer from a string (e.g. representing a .l file).

fn get_rule(&self, idx: usize) -> Option<&Rule<LexerTypesT::StorageT>>

Get the Rule at index idx.

fn get_rule_by_id( &self, tok_id: LexerTypesT::StorageT, ) -> &Rule<LexerTypesT::StorageT>

Get the Rule instance associated with a particular lexeme ID. Panics if no such rule exists.

fn get_rule_by_name(&self, n: &str) -> Option<&Rule<LexerTypesT::StorageT>>

Get the Rule instance associated with a particular name.

fn set_rule_ids<'a>( &'a mut self, rule_ids_map: &HashMap<&'a str, LexerTypesT::StorageT>, ) -> (Option<HashSet<&'a str>>, Option<HashSet<&'a str>>)

Set the id attribute on rules to the corresponding value in map. This is typically used to synchronise a parser’s notion of lexeme IDs with the lexers. While doing this, it keeps track of which lexemes:

fn set_rule_ids_spanned<'a>( &'a mut self, rule_ids_map: &HashMap<&'a str, LexerTypesT::StorageT>, ) -> (Option<HashSet<&'a str>>, Option<HashSet<(&'a str, Span)>>)

fn iter_rules(&self) -> Iter<'_, Rule<LexerTypesT::StorageT>>

Returns an iterator over all rules in this AST.

fn iter_start_states(&self) -> Iter<'_, StartState>

Returns an iterator over all start states in this AST.