From fb3412b4c047982382d80b63461238e0319b1b16 Mon Sep 17 00:00:00 2001
From: Alexey Andreev <konsoletyper@gmail.com>
Date: Wed, 21 Oct 2015 21:56:08 +0300
Subject: [PATCH] Fix generation of JS aliases for Java objects

---
 .../org/teavm/jso/impl/JSAliasRenderer.java   | 27 +++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/jso/impl/src/main/java/org/teavm/jso/impl/JSAliasRenderer.java b/jso/impl/src/main/java/org/teavm/jso/impl/JSAliasRenderer.java
index 8a5e7f097..9e5931e54 100644
--- a/jso/impl/src/main/java/org/teavm/jso/impl/JSAliasRenderer.java
+++ b/jso/impl/src/main/java/org/teavm/jso/impl/JSAliasRenderer.java
@@ -57,8 +57,12 @@ class JSAliasRenderer implements RendererListener {
             }
             writer.append("c").ws().append("=").ws().appendClass(entry.getKey()).append(".prototype;").softNewLine();
             for (Map.Entry<MethodDescriptor, String> aliasEntry : cls.methods.entrySet()) {
-                writer.append("c.").append(aliasEntry.getValue()).ws().append("=").ws().append("c.")
-                        .appendMethod(aliasEntry.getKey()).append(";").softNewLine();
+                if (isKeyword(aliasEntry.getValue())) {
+                    writer.append("c[\"").append(aliasEntry.getValue()).append("\"]");
+                } else {
+                    writer.append("c.").append(aliasEntry.getValue());
+                }
+                writer.ws().append("=").ws().append("c.").appendMethod(aliasEntry.getKey()).append(";").softNewLine();
             }
 
             if (cls.functorField != null) {
@@ -68,6 +72,25 @@ class JSAliasRenderer implements RendererListener {
         writer.outdent().append("})();").newLine();
     }
 
+    private boolean isKeyword(String id) {
+        switch (id) {
+            case "with":
+            case "delete":
+            case "in":
+            case "undefined":
+            case "debugger":
+            case "export":
+            case "function":
+            case "let":
+            case "var":
+            case "typeof":
+            case "yield":
+                return true;
+            default:
+                return false;
+        }
+    }
+
     private void writeFunctor(ExposedClass cls) throws IOException {
         String alias = cls.methods.get(cls.functorMethod);
         if (alias == null) {