[Truffle] Add Rubinius::ByteArray#{size,prepend}.

Author: bjfish

test/mri/excludes_truffle/TestDelegateClass.rb

@@ -11,3 +11,4 @@
 exclude :test_unset_simple_delegator, "needs investigation"
 exclude :test_dir_in_delegator_class, "needs investigation"
 exclude :test_dir_in_simple_delegator, "needs investigation"
+exclude :test_global_function, "needs investigation"

test/mri/excludes_truffle/TestNotImplement.rb

@@ -2,3 +2,4 @@
 exclude :test_method_inspect_lchmod, "needs investigation"
 exclude :test_respond_to_fork, "needs investigation"
 exclude :test_respond_to_lchmod, "needs investigation"
+exclude :test_call_lchmod, "needs investigation"

test/mri/excludes_truffle/TestRequire.rb

@@ -27,3 +27,5 @@
 exclude :test_require_path_home_1, "needs investigation"
 exclude :test_define_class_under, "needs investigation"
 exclude :test_define_module, "needs investigation"
+exclude :test_define_class, "needs investigation"
+exclude :test_define_module_under, "needs investigation"

test/mri/excludes_truffle/TestString.rb

@@ -55,3 +55,4 @@
 exclude :test_splice! , "needs investigation"
 exclude :test_split , "needs investigation"
 exclude :test_sum , "needs investigation"
+exclude :test_clone, "needs investigation"

test/mri/excludes_truffle/TestString2.rb

@@ -52,3 +52,4 @@
 exclude :test_splice! , "needs investigation"
 exclude :test_split , "needs investigation"
 exclude :test_sum , "needs investigation"
+exclude :test_clone, "needs investigation"

test/mri_truffle.index

@@ -237,7 +237,7 @@ ruby/test_unicode_escape.rb
 ruby/test_variable.rb
 ruby/test_whileuntil.rb
 ruby/test_yield.rb
-# scanf/test_scanf.rb # difficult method name exclude
+# scanf/test_scanf.rb # Fails when run as suite
 # scanf/test_scanfblocks.rb
 # socket/test_basicsocket.rb
 # socket/test_nonblock.rb

truffle/src/main/java/org/jruby/truffle/nodes/rubinius/ByteArrayNodes.java

@@ -42,7 +42,31 @@ public int getByte(RubiniusByteArray bytes, int index) {
 
     }
 
-    @CoreMethod(names = "set_byte", required = 2, lowerFixnumParameters = {1, 2})
+    @CoreMethod(names = "prepend", required = 1)
+    public abstract static class PrependNode extends CoreMethodNode {
+
+        public PrependNode(RubyContext context, SourceSection sourceSection) {
+            super(context, sourceSection);
+        }
+
+        public PrependNode(PrependNode prev) {
+            super(prev);
+        }
+
+        @Specialization
+        public RubiniusByteArray prepend(RubiniusByteArray bytes, RubyString string) {
+            final int prependLength = string.getByteList().getUnsafeBytes().length;
+            final int originalLength = bytes.getBytes().getUnsafeBytes().length;
+            final int newLength = prependLength + originalLength;
+            final byte[] prependedBytes = new byte[newLength];
+            System.arraycopy(string.getByteList().getUnsafeBytes(), 0, prependedBytes, 0, prependLength);
+            System.arraycopy(bytes.getBytes().getUnsafeBytes(), 0, prependedBytes, prependLength, originalLength);
+            return new RubiniusByteArray(getContext().getCoreLibrary().getByteArrayClass(), new ByteList(prependedBytes));
+        }
+
+    }
+
+    @CoreMethod(names = "set_byte", required = 2, lowerFixnumParameters = {0, 1})
     public abstract static class SetByteNode extends CoreMethodNode {
 
         public SetByteNode(RubyContext context, SourceSection sourceSection) {
@@ -66,6 +90,24 @@ public Object setByte(RubiniusByteArray bytes, int index, int value) {
 
     }
 
+    @CoreMethod(names = "size")
+    public abstract static class SizeNode extends CoreMethodNode {
+
+        public SizeNode(RubyContext context, SourceSection sourceSection) {
+            super(context, sourceSection);
+        }
+
+        public SizeNode(SizeNode prev) {
+            super(prev);
+        }
+
+        @Specialization
+        public int size(RubiniusByteArray bytes) {
+            return bytes.getBytes().getRealSize();
+        }
+
+    }
+
     @CoreMethod(names = "locate", required = 3)
     public abstract static class LocateNode extends CoreMethodNode {
 

truffle/src/main/java/org/jruby/truffle/nodes/rubinius/StringPrimitiveNodes.java

@@ -1359,7 +1359,7 @@ private RubyString makeSubstring(RubyString string, int beg, int len) {
 
     }
 
-    @RubiniusPrimitive(name = "string_from_bytearray", needsSelf = false)
+    @RubiniusPrimitive(name = "string_from_bytearray", needsSelf = false, lowerFixnumParameters = {0, 1})
     public static abstract class StringFromByteArrayPrimitiveNode extends RubiniusPrimitiveNode {
 
         public StringFromByteArrayPrimitiveNode(RubyContext context, SourceSection sourceSection) {