From 7402238d9d4ca01ac7e6c0bd8261b363b06e0602 Mon Sep 17 00:00:00 2001
From: Igor <igor@trustmachines.co>
Date: Tue, 16 Aug 2022 14:28:00 -0500
Subject: [PATCH] cache lex_matchers

---
 clarity/src/vm/ast/parser/mod.rs | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/clarity/src/vm/ast/parser/mod.rs b/clarity/src/vm/ast/parser/mod.rs
index 6782d69a5..cbf014312 100644
--- a/clarity/src/vm/ast/parser/mod.rs
+++ b/clarity/src/vm/ast/parser/mod.rs
@@ -124,14 +124,8 @@ lazy_static! {
     );
     pub static ref CLARITY_NAME_REGEX: String =
         format!(r#"([[:word:]]|[-!?+<>=/*]){{1,{}}}"#, MAX_STRING_LEN);
-}
 
-pub fn lex(input: &str) -> ParseResult<Vec<(LexItem, u32, u32)>> {
-    // Aaron: I'd like these to be static, but that'd require using
-    //    lazy_static (or just hand implementing that), and I'm not convinced
-    //    it's worth either (1) an extern macro, or (2) the complexity of hand implementing.
-
-    let lex_matchers: &[LexMatcher] = &[
+    static ref lex_matchers: Vec<LexMatcher> = vec![
         LexMatcher::new(
             r##"u"(?P<value>((\\")|([[ -~]&&[^"]]))*)""##,
             TokenType::StringUTF8Literal,
@@ -187,7 +181,9 @@ pub fn lex(input: &str) -> ParseResult<Vec<(LexItem, u32, u32)>> {
             TokenType::Variable,
         ),
     ];
+}
 
+pub fn lex(input: &str) -> ParseResult<Vec<(LexItem, u32, u32)>> {
     let mut context = LexContext::ExpectNothing;
 
     let mut line_indices = get_lines_at(input);