toString() methods + one old typo

src/org/jetbrains/java/decompiler/code/Instruction.java

@@ -1,6 +1,8 @@
 // Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package org.jetbrains.java.decompiler.code;
 
+import org.jetbrains.java.decompiler.util.TextUtil;
+
 public class Instruction implements CodeConstants {
   public static Instruction create(int opcode, boolean wide, int group, int bytecodeVersion, int[] operands) {
     if (opcode >= opc_ifeq && opcode <= opc_if_acmpne ||
@@ -57,6 +59,25 @@ public class Instruction implements CodeConstants {
            opcode != opc_jsr && opcode != opc_tableswitch && opcode != opc_lookupswitch;
   }
 
+  public String toString() {
+
+    String res = wide ? "@wide " : "";
+    res += "@" + TextUtil.getInstructionName(opcode);
+
+    int len = operandsCount();
+    for (int i = 0; i < len; i++) {
+      int op = operands[i];
+      if (op < 0) {
+        res += " -" + Integer.toHexString(-op);
+      }
+      else {
+        res += " " + Integer.toHexString(op);
+      }
+    }
+
+    return res;
+  }
+
   @Override
   @SuppressWarnings("MethodDoesntCallSuperMethod")
   public Instruction clone() {