[Truffle] Delegate Kernel#trap to Signal#trap.

* Add a few specilizations (importing Rubinius code is not trivial).

Author: eregon

spec/truffle/tags/core/kernel/trap_tags.txt

@@ -12,12 +12,15 @@
 import com.oracle.truffle.api.Truffle;
 import com.oracle.truffle.api.dsl.Specialization;
 import com.oracle.truffle.api.source.SourceSection;
+
 import org.jruby.common.IRubyWarnings;
 import org.jruby.truffle.runtime.RubyContext;
 import org.jruby.truffle.runtime.UndefinedPlaceholder;
 import org.jruby.truffle.runtime.core.RubyProc;
 import org.jruby.truffle.runtime.core.RubyString;
+import org.jruby.truffle.runtime.core.RubySymbol;
 import org.jruby.truffle.runtime.signal.ProcSignalHandler;
+
 import sun.misc.Signal;
 import sun.misc.SignalHandler;
 
@@ -36,10 +39,30 @@ public SignalNode(SignalNode prev) {
         }
 
         @Specialization
-        public Object trap(RubyString signalName, UndefinedPlaceholder command, final RubyProc block) {
+        public Object trap(RubySymbol signalName, UndefinedPlaceholder command, RubyProc block) {
+            return trap(signalName.toString(), block);
+        }
+
+        @Specialization
+        public Object trap(RubyString signalName, UndefinedPlaceholder command, RubyProc block) {
+            return trap(signalName.toString(), block);
+        }
+
+        @Specialization
+        public Object trap(RubySymbol signalName, RubyProc proc, UndefinedPlaceholder block) {
+            return trap(signalName.toString(), proc);
+        }
+
+        @Specialization
+        public Object trap(RubyString signalName, RubyProc proc, UndefinedPlaceholder block) {
+            return trap(signalName.toString(), proc);
+        }
+
+        @SuppressWarnings("restriction")
+        private Object trap(String signalName, RubyProc block) {
             notDesignedForCompilation();
 
-            final Signal signal = new Signal(signalName.toString());
+            final Signal signal = new Signal(signalName);
 
             final SignalHandler newHandler = new ProcSignalHandler(getContext(), block);
             final SignalHandler oldHandler = Signal.handle(signal, newHandler);
@@ -51,8 +74,17 @@ public Object trap(RubyString signalName, UndefinedPlaceholder command, final Ru
             return getContext().getCoreLibrary().getNilObject();
         }
 
+        @Specialization
+        public Object trap(RubySymbol signalName, RubyString command, UndefinedPlaceholder block) {
+            return trap(signalName.toString(), command, block);
+        }
+
         @Specialization
         public Object trap(RubyString signalName, RubyString command, UndefinedPlaceholder block) {
+            return trap(signalName.toString(), command, block);
+        }
+
+        private Object trap(String signalName, RubyString command, UndefinedPlaceholder block) {
             notDesignedForCompilation();
             getContext().getRuntime().getWarnings().warn(IRubyWarnings.ID.TRUFFLE, Truffle.getRuntime().getCallerFrame().getCallNode().getEncapsulatingSourceSection().getSource().getName(), Truffle.getRuntime().getCallerFrame().getCallNode().getEncapsulatingSourceSection().getStartLine(), "Signal#trap with a string command not implemented yet");
             return getContext().getCoreLibrary().getNilObject();

truffle/src/main/java/org/jruby/truffle/nodes/core/SignalNodes.java

@@ -105,6 +105,9 @@ def object_id
     raise PrimitiveFailure, "Kernel#object_id primitive failed"
   end
 
-
+  def trap(sig, prc=nil, &block)
+    Signal.trap(sig, prc, &block)
+  end
+  module_function :trap
 
 end

truffle/src/main/ruby/jruby/truffle/core/rubinius/kernel/common/kernel.rb

@@ -154,9 +154,6 @@ def extended_modules(object)
     []
   end
 
-  def trap(signal)
-  end
-
 end
 
 class File