Crate lrlex[−][src]
Expand description
lrlex is a partial replacement for lex
/ flex. It takes in a .l file and statically
compiles it to Rust code. The resulting LRNonStreamingLexerDef can then be given an input
string, from which it instantiates an LRNonStreamingLexer. This provides an iterator which
can produce the sequence of lrpar::Lexemes for that input, as well as answer basic queries
about lrpar::Spans (e.g. extracting substrings, calculating line and column numbers).
Macros
A convenience macro for including statically compiled .l files. A file src/a/b/c.l which is
statically compiled by lrlex can then be used in a crate with lrlex_mod!("a/b/c.l").
Structs
An interface to the result of CTLexerBuilder::build().
A CTLexerBuilder allows one to specify the criteria for building a statically generated
lexer.
lrlex’s standard lexeme struct: all lexemes are instances of this struct.
An LRNonStreamingLexer holds a reference to a string and can lex it into lrpar::Lexemes.
Although the struct is tied to a single string, no guarantees are made about whether the
lexemes are cached or not.
This struct represents, in essence, a .l file in memory. From it one can produce an LRNonStreamingLexer which actually lexes inputs.
Any error from the Lex parser returns an instance of this struct.
Enums
The various different possible Lex parser errors.
Specify the visibility of the module generated by CTLexerBuilder.
Traits
Methods which all lexer definitions must implement.
Functions
Create a Rust module named mod_name that can be imported with
lrlex_mod!(mod_name). The module contains one const StorageT per token in
token_map, with the token prefixed by T_. For example with StorageT u8, mod_name x,
and token_map HashMap{"ID": 0, "INT": 1} the generated module will look roughly as
follows: