diff options
| -rw-r--r-- | lib/lace/lex.lua | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/lace/lex.lua b/lib/lace/lex.lua index 1085bed..af891af 100644 --- a/lib/lace/lex.lua +++ b/lib/lace/lex.lua @@ -15,7 +15,7 @@ local M = {} -local function lex_one_line(line) +local function _lex_one_line(line) local r = {} local acc = "" local c @@ -91,6 +91,15 @@ local function lex_one_line(line) return r, warnings end +local lexer_line_cache = {} + +local function lex_one_line(line) + if not lexer_line_cache[line] then + lexer_line_cache[line] = { _lex_one_line(line) } + end + return lexer_line_cache[line][1], lexer_line_cache[line][2] +end + --- Lexically analyse a ruleset. -- @tparam string ruleset The ruleset to lex. -- @tparam string sourcename The name of the source to go into debug info. |