Refining syntax, reducing jslint warnings

bin/carto

@@ -1,10 +1,10 @@
 #!/usr/bin/env node
 
-var path = require('path');
-var fs = require('fs');
-var sys = require('sys');
+var path = require('path'),
+    fs = require('fs'),
+    sys = require('sys'),
+    carto = require('carto');
 
-var carto = require('carto');
 var args = process.argv.slice(1);
 var options = {};
 
@@ -102,6 +102,10 @@ function compile(err, data) {
             }
         });
     } catch (e) {
-        sys.error(e);
+        if (e.stack) {
+            sys.error(e.stack);
+        } else {
+            sys.error(e);
+        }
     }
 };

lib/carto/parser.js

@@ -123,7 +123,8 @@ carto.Parser = function Parser(env) {
         } else {
             sync();
 
-            if (match = tok.exec(chunks[j])) {
+            match = tok.exec(chunks[j]);
+            if (match) {
                 length = match[0].length;
             } else {
                 return null;
@@ -187,7 +188,7 @@ carto.Parser = function Parser(env) {
         err.line = (input.slice(0, err.index).match(/\n/g) || '').length + 1;
         for (var n = err.index; n >= 0 && input.charAt(n) !== '\n'; n--) {
             err.column++;
-        };
+        }
 	    return new Error(_('<%=filename%>:<%=line%>:<%=column%> <%=message%>').template(err));
     }
 

lib/carto/tree.js

@@ -3,7 +3,7 @@
  */
 module.exports.find = function (obj, fun) {
     for (var i = 0, r; i < obj.length; i++) {
-        if (r = fun.call(obj, obj[i])) { return r }
+        if (r = fun.call(obj, obj[i])) { return r; }
     }
     return null;
 };

lib/carto/tree/zoom.js

@@ -13,13 +13,26 @@ tree.Zoom = function(op, value, index) {
         };
     }
 
-    var start = 0, end = Infinity, zoom = 0;
+    var start = 0,
+        end = Infinity,
+        zoom = 0;
+
     switch (op) {
-        case '=': return 1 << value; break;
-        case '>': start = value + 1; break;
-        case '>=': start = value; break;
-        case '<': end = value - 1; break;
-        case '<=': end = value; break;
+        case '=':
+            return 1 << value;
+            break;
+        case '>':
+            start = value + 1;
+            break;
+        case '>=':
+            start = value;
+            break;
+        case '<':
+            end = value - 1;
+            break;
+        case '<=':
+            end = value;
+            break;
     }
     for (var i = 0; i <= tree.Zoom.maxZoom; i++) {
         if (i >= start && i <= end) {