Issue 6812 - Implement parsing of named arguments to snippets

lib/snippets.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 96 matching lines @@
 
   let escape = false;
   let withinQuotes = false;
 
   let unicodeEscape = null;
 
   let quotesClosed = false;
 
   let call = [];
   let argument = "";
+  let name = null;
 
   for (let character of script.trim() + ";")
   {
     let afterQuotesClosed = quotesClosed;
     quotesClosed = false;
 
     if (unicodeEscape != null)
     {
       unicodeEscape += character;
 
@@ skipping 21 matching lines @@
     }
     else if (character == "'")
     {
       withinQuotes = !withinQuotes;
 
       if (!withinQuotes)
         quotesClosed = true;
     }
     else if (withinQuotes || character != ";" && !/\s/.test(character))
     {
-      argument += character;
+      if (!withinQuotes && character == "=" && name == null && call.length > 0)
+      {
+        name = argument;
+        argument = "";
+      }
+      else
+      {
+        argument += character;
+      }
     }
     else
     {
-      if (argument || afterQuotesClosed)
+      if (name || argument || afterQuotesClosed)
       {
-        call.push(argument);
+        if (name != null)
+          call[name] = argument;
+        else
+          call.push(argument);
+
+        name = null;
         argument = "";
       }
 
       if (character == ";" && call.length > 0)
       {
         tree.push(call);
         call = [];
       }
     }
   }
@@ skipping 29 matching lines @@
           let value = imports[name];
           if (typeof value == "function")
             value(...args);
         }
       }
     }
   `;
 }
 
 exports.compileScript = compileScript;