[Interpreter] Unary operators - typeof, void, and logical not.

src/interpreter/bytecode-generator.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/interpreter/bytecode-generator.h"
 
 #include <stack>
 
 #include "src/compiler.h"
 #include "src/interpreter/control-flow-builders.h"
@@ skipping 601 matching lines @@
     builder()->StoreAccumulatorInRegister(arg);
   }
 
   // TODO(rmcilroy): support multiple return values.
   DCHECK_LE(expr->function()->result_size, 1);
   Runtime::FunctionId function_id = expr->function()->function_id;
   builder()->CallRuntime(function_id, first_arg, args->length());
 }
 
 
+void BytecodeGenerator::VisitVoid(UnaryOperation* expr) {
+  Visit(expr->expression());
+  builder()->LoadUndefined();
+}
+
+
+void BytecodeGenerator::VisitTypeOf(UnaryOperation* expr) {
+  Visit(expr->expression());
+  builder()->TypeOf();
+}
+
+
+void BytecodeGenerator::VisitNot(UnaryOperation* expr) {
+  Visit(expr->expression());
+  builder()->LogicalNot();
+}
+
+
 void BytecodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
-  UNIMPLEMENTED();
+  switch (expr->op()) {
+    case Token::Value::NOT:
+      VisitNot(expr);
+      break;
+    case Token::Value::TYPEOF:
+      VisitTypeOf(expr);
+      break;
+    case Token::Value::VOID:
+      VisitVoid(expr);
+      break;
+    case Token::Value::BIT_NOT:
+    case Token::Value::DELETE:
+      UNIMPLEMENTED();
+    default:
+      UNREACHABLE();
+  }
 }
 
 
 void BytecodeGenerator::VisitCountOperation(CountOperation* expr) {
   UNIMPLEMENTED();
 }
 
 
 void BytecodeGenerator::VisitBinaryOperation(BinaryOperation* binop) {
   switch (binop->op()) {
@@ skipping 68 matching lines @@
 }
 
 
 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const {
   return info()->feedback_vector()->GetIndex(slot);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8