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@@ -96,8 +96,9 @@ class GeneratorMethodsLoader {
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          * @return The JSON representation of the Hash
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          */
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         private RubyString simpleTransform(RubyHash self) {
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-            int preSize = 2 + Math.max(self.size() * 8, 0);
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-            final RubyString result = self.getRuntime().newString(new ByteList(preSize));
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+            final int preSize = 2 + Math.max(self.size() * 12, 0);
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+            final RubyString result =
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+                self.getRuntime().newString(new ByteList(preSize));
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             result.cat((byte)'{');
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             self.visitAll(new RubyHash.Visitor() {
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                 private boolean firstPair = true;
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@@ -112,7 +113,7 @@ class GeneratorMethodsLoader {
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                     }
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                     RubyString jsonKey = Utils.toJson(key.asString());
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-                    result.cat(((RubyString)jsonKey).getByteList());
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+                    result.cat(jsonKey.getByteList());
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                     result.infectBy(jsonKey);
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                     result.cat((byte)':');
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@@ -126,9 +127,7 @@ class GeneratorMethodsLoader {
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         }
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         private RubyString transform(RubyHash self, final GeneratorState state, int depth) {
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-            Ruby runtime = self.getRuntime();
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-            int preSize = 2 + Math.max(self.size() * 8, 0);
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-            final RubyString result = runtime.newString(new ByteList(preSize));
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+            final Ruby runtime = self.getRuntime();
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             final ByteList objectNl = state.object_nl_get().getByteList();
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             final byte[] indent = Utils.repeat(state.indent_get().getByteList(), depth + 1);
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@@ -136,10 +135,14 @@ class GeneratorMethodsLoader {
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             final ByteList space = state.space_get().getByteList();
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             final RubyFixnum subDepth = runtime.newFixnum(depth + 1);
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+            final int preSize = 2 + self.size() * (12 + indent.length + spaceBefore.length() + space.length());
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+            final RubyString result = runtime.newString(new ByteList(preSize));
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+
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             result.cat((byte)'{');
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             result.cat(objectNl);
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             self.visitAll(new RubyHash.Visitor() {
0
                 private boolean firstPair = true;
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+
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                 @Override
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                 public void visit(IRubyObject key, IRubyObject value) {
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                     // XXX key == Qundef???
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@@ -150,9 +153,8 @@ class GeneratorMethodsLoader {
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                         result.cat((byte)',');
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                         result.cat(objectNl);
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                     }
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-                    if (objectNl.length() != 0) {
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-                        result.cat(indent);
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-                    }
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+                    if (objectNl.length() != 0) result.cat(indent);
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+
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                     RubyString keyJson = Utils.toJson(key.asString(), state, subDepth);
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                     result.cat(keyJson.getByteList());
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                     result.infectBy(keyJson);

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@@ -86,9 +86,8 @@ final class Utils {
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      *                        of the expected type
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      */
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     static GeneratorState ensureState(IRubyObject object) {
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-        if (object instanceof GeneratorState) {
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-            return (GeneratorState)object;
0
-        }
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+        if (object instanceof GeneratorState) return (GeneratorState)object;
0
+
0
         Ruby runtime = object.getRuntime();
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         RubyClass generatorState =
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             (RubyClass)runtime.getClassFromPath("JSON::Ext::Generator::State");
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@@ -123,7 +122,8 @@ final class Utils {
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         return newException(runtime, className, msg);
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     }
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-    static RaiseException newException(Ruby runtime, String className, RubyString message) {
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+    static RaiseException newException(Ruby runtime, String className,
0
+                                       RubyString message) {
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         RubyClass klazz = runtime.getModule("JSON").getClass(className);
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         RubyException excptn =
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             (RubyException)klazz.newInstance(runtime.getCurrentContext(),
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@@ -133,8 +133,8 @@ final class Utils {
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     }
0
 
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     /**
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-     * Invokes <code>to_json</code> on the given object and ensures it
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-     * returns a RubyString
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+     * Invokes <code>to_json</code> on the given object and ensures
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+     * it returns a RubyString
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      * @param object The object to convert to JSON
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      * @param args Parameters to pass to the method call
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      * @return The {@link RubyString String} containing the
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@@ -143,9 +143,7 @@ final class Utils {
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     static RubyString toJson(IRubyObject object, IRubyObject... args) {
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         Ruby runtime = object.getRuntime();
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         IRubyObject result = object.callMethod(runtime.getCurrentContext(), "to_json", args);
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-        if (result instanceof RubyString) {
0
-            return (RubyString)result;
0
-        }
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+        if (result instanceof RubyString) return (RubyString)result;
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         throw runtime.newTypeError("to_json must return a String");
0
     }
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