Create get(Object,String) and set(Object,String,Object) commands

Author: Jason Feinstein

app/src/main/java/jwf/debugport/app/App.java

@@ -20,6 +20,8 @@ public class App extends Application {
     public short[] mShortArray;
     public byte[] mByteArray;
     public long[] mLongArray;
+    private String mSecretString = "This is a private value.";
+    private int mSecretInt = 42;
 
     @Override
     public void onCreate() {

library/src/main/java/jwf/debugport/commands/Commands.java

@@ -16,6 +16,8 @@ public final class Commands {
         help.registerCommand(methodsLocal.class);
         help.registerCommand(fields.class);
         help.registerCommand(fieldsLocal.class);
+        help.registerCommand(get.class);
+        help.registerCommand(set.class);
     }
 
     public Commands(ExitListener listener) {

library/src/main/java/jwf/debugport/commands/get.java

@@ -0,0 +1,26 @@
+package jwf.debugport.commands;
+
+import java.lang.reflect.Field;
+
+import bsh.CallStack;
+import bsh.Interpreter;
+import jwf.debugport.annotations.Command;
+
+/**
+ * Created by jason on 5/6/16.
+ */
+@Command
+public class get {
+    @Command.Help("Get the value of a parameter, regardless of access modifiers, on the provided object.")
+    public static Object invoke(Interpreter interpreter, CallStack callstack, Object object, String param) throws NoSuchFieldException, IllegalAccessException {
+        Field field;
+        try {
+            field = object.getClass().getDeclaredField(param);
+        } catch (NoSuchFieldException e) {
+            // let's try a regular field..
+            field = object.getClass().getField(param);
+        }
+        field.setAccessible(true);
+        return field.get(object);
+    }
+}

library/src/main/java/jwf/debugport/commands/help.java

@@ -16,7 +16,7 @@
 public class help {
     private static final ArrayList<CommandHelpInfo> sCommandHelp = new ArrayList<>();
     private static final int GAP_SPACES = 2;
-    private static final int MAX_WIDTH = 80;
+    private static final int MAX_WIDTH = 100;
 
     @Command.Help("Show this help message.")
     public static void invoke(Interpreter interpreter, CallStack callStack) {

library/src/main/java/jwf/debugport/commands/set.java

@@ -0,0 +1,27 @@
+package jwf.debugport.commands;
+
+import java.lang.reflect.Field;
+
+import bsh.CallStack;
+import bsh.Interpreter;
+import jwf.debugport.annotations.Command;
+
+/**
+ * Created by jason on 5/6/16.
+ */
+@Command
+public class set {
+    @Command.Help("Set the value of a field on the provided object to the given value, regardless of access modifiers.")
+    public static Object invoke(Interpreter interpreter, CallStack callStack, Object object, String param, Object value) throws NoSuchFieldException, IllegalAccessException {
+        Field field;
+        try {
+            field = object.getClass().getDeclaredField(param);
+        } catch (NoSuchFieldException e) {
+            // try a field on the inherited classes
+            field = object.getClass().getField(param);
+        }
+        field.setAccessible(true);
+        field.set(object, value);
+        return value;
+    }
+}