Merge pull request #1960 from ajaxorg/improved-clojure

Slightly improved auto indent for Clojure

lib/ace/mode/clojure.js

@@ -35,7 +35,7 @@ var oop = require("../lib/oop");
 var TextMode = require("./text").Mode;
 var ClojureHighlightRules = require("./clojure_highlight_rules").ClojureHighlightRules;
 var MatchingParensOutdent = require("./matching_parens_outdent").MatchingParensOutdent;
-var Range = require("../range").Range;
+var lang = require("../lib/lang");
 
 var Mode = function() {
     this.HighlightRules = ClojureHighlightRules;
@@ -47,6 +47,19 @@ oop.inherits(Mode, TextMode);
 
     this.lineCommentStart = ";";
 
+    this.$checkBracketDelta = function (line) {
+        var delta = 0;
+        for(var i = 0; i < line.length; i++) {
+            var ch = line[i];
+            if(ch === '(' || ch === '[' || ch === '{') {
+                delta++;
+            } else if(ch === ')' || ch === ']' || ch === '}') {
+                delta--;
+            }
+        }
+        return delta;
+    };
+
     this.getNextLineIndent = function(state, line, tab) {
         var indent = this.$getIndent(line);
 
@@ -58,13 +71,11 @@ oop.inherits(Mode, TextMode);
         }
 
         if (state == "start") {
-            var match = line.match(/[\(\[]/);
-            if (match) {
-                indent += "  ";
-            }
-            match = line.match(/[\)]/);
-            if (match) {
-              indent = "";
+            var delta = this.$checkBracketDelta(line);
+            if (delta > 0) {
+                indent += tab;
+            } else if (delta < 0) {
+                indent = indent.substring(0, indent.length - tab.length);
             }
         }