23 releases
0.10.0 | Mar 29, 2021 |
---|---|
0.9.2 | Nov 29, 2020 |
0.9.0 | Jul 6, 2020 |
0.6.2 | Mar 22, 2020 |
0.1.1 | Dec 18, 2018 |
#40 in Parser tooling
264 downloads per month
Used in 2 crates
175KB
3.5K
SLoC
lrlex
lrlex
is a partial replacement for
lex
/
flex
. It takes an input string and
splits it into lexemes based on a .l
file. Unfortunately, many real-world
languages have corner cases which exceed the power that lrlex
can provide.
However, when it is suitable, it is a very convenient way of expressing lexing.
lrlex
also has a simple command-line interface, allowing you to check whether
your lexing rules are working as expected:
$ cat C.java
class C {
int x = 0;
}
$ cargo run --lrlex java.l /tmp/C.java
Finished dev [unoptimized + debuginfo] target(s) in 0.18s
Running `target/debug/lrlex ../grammars/java7/java.l /tmp/C.java`
CLASS class
IDENTIFIER C
LBRACE {
INT int
IDENTIFIER x
EQ =
INTEGER_LITERAL 0
SEMICOLON ;
RBRACE }
Dependencies
~2.8–4MB
~96K SLoC