Allow comments in extension config files.

third_party/json_minify/minify-sans-regexp.js

+/*!
+ * `JSON.minify()`
+ * This version does not use regular expressions.
+ *
+ * Copyright 2011, Kyle Simpson.
+ * Copyright 2012, Kit Cambridge.
+ *
+ * Released under the MIT License.
+*/
+
+;(function () {
+  var JSON = this.JSON;
+
+  // Create the global JSON object if it doesn't exist.
+  if (Object(JSON) !== JSON) {
+    JSON = this.JSON = {};
+  }
+
+  JSON.minify = function (source) {
+    var index = 0, length = source.length, result = "", symbol, position;
+    while (index < length) {
+      symbol = source.charAt(index);
+      switch (symbol) {
+        // Ignore whitespace tokens. According to ES 5.1 section 15.12.1.1,
+        // whitespace tokens include tabs, carriage returns, line feeds, and
+        // space characters.
+        // -----------------------------------------------------------------
+        case "\t":
+        case "\r":
+        case "\n":
+        case " ":
+          index += 1;
+          break;
+        // Ignore line and block comments.
+        // -------------------------------
+        case "/":
+          symbol = source.charAt(index += 1);
+          switch (symbol) {
+            // Line comments.
+            // -------------
+            case "/":
+              position = source.indexOf("\n", index);
+              if (position < 0) {
+                // Check for CR-style line endings.
+                position = source.indexOf("\r", index);
+              }
+              index = position > -1 ? position : length;
+              break;
+            // Block comments.
+            // ---------------
+            case "*":
+              position = source.indexOf("*/", index);
+              if (position > -1) {
+                // Advance the scanner's position past the end of the comment.
+                index = position += 2;
+                break;
+              }
+              throw SyntaxError("Unterminated block comment.");
+            default:
+              throw SyntaxError("Invalid comment.");
+          }
+          break;
+        // Parse strings separately to ensure that any whitespace characters and
+        // JavaScript-style comments within them are preserved.
+        // ---------------------------------------------------------------------
+        case '"':
+          position = index;
+          while (index < length) {
+            symbol = source.charAt(index += 1);
+            if (symbol == "\\") {
+              // Skip past escaped characters.
+              index += 1;
+            } else if (symbol == '"') {
+              break;
+            }
+          }
+          if (source.charAt(index) == '"') {
+            result += source.slice(position, index += 1);
+            break;
+          }
+          throw SyntaxError("Unterminated string.");
+        // Preserve all other characters.
+        // ------------------------------
+        default:
+          result += symbol;
+          index += 1;
+      }
+    }
+    return result;
+  };
+}).call(this);