simplified table modification

src/main/java/de/neemann/digital/analyse/TruthTable.java

@@ -18,6 +18,7 @@ import de.neemann.digital.analyse.quinemc.ThreeStateValue;
 import de.neemann.digital.lang.Lang;
 
 import java.io.*;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 
 /**
@@ -52,7 +53,7 @@ public class TruthTable {
      */
     public void save(File filename) throws IOException {
         XStream xStream = getxStream();
-        try (Writer out = new OutputStreamWriter(new FileOutputStream(filename), "utf-8")) {
+        try (Writer out = new OutputStreamWriter(new FileOutputStream(filename), StandardCharsets.UTF_8)) {
             out.write("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
             xStream.marshal(this, new PrettyPrintWriter(out));
         }
@@ -68,7 +69,7 @@ public class TruthTable {
         if (results.size() > 63)
             throw new IOException(Lang.get("err_tableHasToManyResultColumns"));
 
-        try (Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(filename), "utf-8"))) {
+        try (Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(filename), StandardCharsets.UTF_8))) {
             saveHex(out);
         }
     }
@@ -456,30 +457,18 @@ public class TruthTable {
     }
 
     /**
-     * Sets the don't cares to a given value
+     * Modifies all column in the table
      *
-     * @param b the value to set
+     * @param m the modifier to use
+     * @return this for chained calls
      */
-    public void setXto(boolean b) {
+    public TruthTable modifyValues(BoolTableByteArray.TableModifier m) {
         for (Result r : results) {
             BoolTable bt = r.getValues();
             if (bt instanceof BoolTableByteArray)
-                ((BoolTableByteArray) bt).setXTo(b ? 1 : 0);
+                ((BoolTableByteArray) bt).modify(m);
-        }
-    }
-
-    /**
-     * Set all table entries to the given value.
-     * Zero and one behave as expected. All other values represent "don't care"
-     *
-     * @param value the value to set
-     */
-    public void setAllTo(int value) {
-        for (Result r : results) {
-            BoolTable bt = r.getValues();
-            if (bt instanceof BoolTableByteArray)
-                ((BoolTableByteArray) bt).setAllTo(value);
         }
+        return this;
     }
 
     /**

src/main/java/de/neemann/digital/analyse/quinemc/BoolTableByteArray.java

@@ -79,23 +79,25 @@ public class BoolTableByteArray implements BoolTable {
     }
 
     /**
-     * Sets the don't cares to the given value
+     * Modifies all the table elements using the given modifier.
      *
-     * @param value the value
+     * @param m the modifier
      */
-    public void setXTo(int value) {
+    public void modify(TableModifier m) {
         for (int i = 0; i < table.length; i++)
-            if (table[i] > 1)
+            table[i] = m.modify(table[i]);
-                table[i] = (byte) value;
     }
 
     /**
-     * Sets all entries to the given value
+     * Modifier to modify the table
-     *
-     * @param value the value
      */
-    public void setAllTo(int value) {
+    public interface TableModifier {
-        for (int i = 0; i < table.length; i++)
+        /**
-            table[i] = (byte) value;
+         * Creates the modified value
+         *
+         * @param b the original value
+         * @return the modified value
+         */
+        byte modify(byte b);
     }
 }

src/main/java/de/neemann/digital/fsm/TransitionTableCreator.java

@@ -108,7 +108,7 @@ public class TransitionTableCreator {
         }
 
         // set all to dc
-        truthTable.setAllTo(2);
+        truthTable.modifyValues(v -> (byte) 2);
 
         // set state output variables
         for (State s : states) {

src/main/java/de/neemann/digital/gui/components/table/TableDialog.java

@@ -366,44 +366,44 @@ public class TableDialog extends JDialog {
         setMenu.add(new ToolTipAction(Lang.get("menu_table_setXTo0")) {
             @Override
             public void actionPerformed(ActionEvent e) {
-                TruthTable t = model.getTable();
+                modifyTable(v -> v > 1 ? 0 : v);
-                t.setXto(false);
-                setModel(new TruthTableTableModel(t));
             }
         }.setToolTip(Lang.get("menu_table_setXTo0_tt")).createJMenuItem());
         setMenu.add(new ToolTipAction(Lang.get("menu_table_setXTo1")) {
             @Override
             public void actionPerformed(ActionEvent e) {
-                TruthTable t = model.getTable();
+                modifyTable(v -> v > 1 ? 1 : v);
-                t.setXto(true);
-                setModel(new TruthTableTableModel(t));
             }
         }.setToolTip(Lang.get("menu_table_setXTo1_tt")).createJMenuItem());
         setMenu.add(new ToolTipAction(Lang.get("menu_table_setAllToX")) {
             @Override
             public void actionPerformed(ActionEvent e) {
-                setAllValuesTo(2);
+                modifyTable(v -> (byte) 2);
             }
         }.setToolTip(Lang.get("menu_table_setAllToX_tt")).createJMenuItem());
         setMenu.add(new ToolTipAction(Lang.get("menu_table_setAllTo0")) {
             @Override
             public void actionPerformed(ActionEvent e) {
-                setAllValuesTo(0);
+                modifyTable(v -> (byte) 0);
             }
         }.setToolTip(Lang.get("menu_table_setAllTo0_tt")).createJMenuItem());
         setMenu.add(new ToolTipAction(Lang.get("menu_table_setAllTo1")) {
             @Override
             public void actionPerformed(ActionEvent e) {
-                setAllValuesTo(1);
+                modifyTable(v -> (byte) 1);
             }
         }.setToolTip(Lang.get("menu_table_setAllTo1_tt")).createJMenuItem());
+        setMenu.add(new ToolTipAction(Lang.get("menu_table_invert")) {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                modifyTable(v -> v > 1 ? v : (byte) (1 - v));
+            }
+        }.setToolTip(Lang.get("menu_table_invert_tt")).createJMenuItem());
         return setMenu;
     }
 
-    private void setAllValuesTo(int value) {
+    private void modifyTable(BoolTableByteArray.TableModifier m) {
-        TruthTable t = model.getTable();
+        setModel(new TruthTableTableModel(model.getTable().modifyValues(m)));
-        t.setAllTo(value);
-        setModel(new TruthTableTableModel(t));
     }
 
     private JMenu createCreateMenu() {

src/main/resources/lang/lang_de.xml

@@ -1565,6 +1565,9 @@ Sind evtl. die Namen der Variablen nicht eindeutig?</string>
     <string name="menu_table_setAllTo0_tt">Setzt alle Werte auf Null.</string>
     <string name="menu_table_setAllTo1">Alles auf 1 setzen</string>
     <string name="menu_table_setAllTo1_tt">Setzt alle Werte auf Eins.</string>
+    <string name="menu_table_invert">Alle Bits invertieren</string>
+    <string name="menu_table_invert_tt">Aus einer "1" wird eine "0" und umgekehrt. Don't Cares bleiben unverändert.
+    </string>
     <string name="menu_table_showAllSolutions">Lösungsdialog anzeigen</string>
     <string name="menu_table_showAllSolutions_tt">Zeigt den Lösungsdialog wieder an, wenn er manuell geschlossen wurde.</string>
     <string name="menu_terminalDelete">Löschen</string>

src/main/resources/lang/lang_en.xml

@@ -1548,6 +1548,8 @@
     <string name="menu_table_setAllTo0_tt">Set all values to zero.</string>
     <string name="menu_table_setAllTo1">Set all to 1</string>
     <string name="menu_table_setAllTo1_tt">Set all values to one.</string>
+    <string name="menu_table_invert">Invert all bits</string>
+    <string name="menu_table_invert_tt">A "1" becomes a "0" and vice versa. Don't cares remain unchanged.</string>
     <string name="menu_table_showAllSolutions">Show results dialog</string>
     <string name="menu_table_showAllSolutions_tt">Shows the results dialog again if it was closed manually.</string>
     <string name="menu_terminalDelete">Delete</string>