jyapayne/ace
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Simplify backreference adjustment

Browse source
This commit is contained in:
c-spencer 2011-05-19 13:07:42 +01:00
commit 6b660009ad
1 changed files with 2 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

5
lib/ace/tokenizer.js
View file

@ -54,11 +54,8 @@ var Tokenizer = function(rules) {
// And the catch-all on the end (used to force a match); // And the catch-all on the end (used to force a match);
var matchcount = new RegExp("(?:(" + state[i].regex + ")|(.))").exec("a").length - 2; var matchcount = new RegExp("(?:(" + state[i].regex + ")|(.))").exec("a").length - 2;
// Get how long references can be, depending on how many capturing groups have been found so far.
var reflength = ("" + (matchTotal + matchcount.length - 2)).length;
// Replace any backreferences and offset appropriately. // Replace any backreferences and offset appropriately.
var adjustedregex = state[i].regex.replace(new RegExp("\\\\([0-9]{1," + reflength + "})", "g"), function (match, digit) { var adjustedregex = state[i].regex.replace(/\\([0-9]+)/g, function (match, digit) {
return "\\" + (parseInt(digit, 10) + matchTotal + 1); return "\\" + (parseInt(digit, 10) + matchTotal + 1);
}); });