Use default values when generating custom constructor for records to avoid compilation error

Review ID: IDEA-CR-57600

GitOrigin-RevId: 847c2c4f925714400e7daa25360b8d66620a8328

java/java-impl/src/com/intellij/codeInsight/generation/JavaConstructorBodyWithSuperCallGenerator.java

@@ -20,11 +20,13 @@ import com.intellij.psi.PsiField;
 import com.intellij.psi.PsiParameter;
 import com.intellij.psi.PsiRecordComponent;
 import com.intellij.psi.util.JavaPsiRecordUtil;
+import com.intellij.psi.util.PsiTypesUtil;
 import com.intellij.util.ArrayUtil;
 import one.util.streamex.StreamEx;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.Collection;
+import java.util.Objects;
 
 public class JavaConstructorBodyWithSuperCallGenerator implements ConstructorBodyGenerator {
   @Override
@@ -50,8 +52,11 @@ public class JavaConstructorBodyWithSuperCallGenerator implements ConstructorBod
     if (components.length > fields.length) {
       buffer.append(StreamEx.of(components)
                       .map(JavaPsiRecordUtil::getFieldForComponent)
-                      .mapToInt(f -> ArrayUtil.indexOf(fields, f))
-                      .mapToObj(idx -> idx >= 0 ? parameters[idx].getName() : "")
+                      .peek(Objects::requireNonNull)
+                      .map(f -> {
+                        int index = ArrayUtil.indexOf(fields, f);
+                        return index >= 0 ? parameters[index].getName() : PsiTypesUtil.getDefaultValueOfType(f.getType(), true);
+                      })
                       .joining(",", "this(", ")"));
       appendSemicolon(buffer);
       return true;

java/java-tests/testData/codeInsight/generateConstructor/afterRecordCustomConstructor2.java

@@ -3,6 +3,6 @@ import java.lang.annotation.Target;
 
 record Test(int x,int y,int z) {
     public Test(int x, int y) {<caret>
-        this(x, y, );
+        this(x, y, 0);
     }
 } 

java/java-tests/testData/codeInsight/generateConstructor/afterRecordCustomConstructor3.java

@@ -0,0 +1,7 @@
+import java.util.Optional;
+
+record Test(int x,int y, boolean a, double b, Optional<String> opt, int[] data) {
+    public Test(int x, int y) {<caret>
+        this(x, y, false, 0, Optional.empty(), new int[0]);
+    }
+} 

java/java-tests/testData/codeInsight/generateConstructor/beforeRecordCustomConstructor3.java

@@ -0,0 +1,5 @@
+import java.util.Optional;
+
+record Test(int x,int y, boolean a, double b, Optional<String> opt, int[] data) {
+    <caret>
+} 

java/java-tests/testSrc/com/intellij/java/codeInsight/GenerateConstructorTest.java

@@ -125,6 +125,10 @@ public class GenerateConstructorTest extends LightJavaCodeInsightFixtureTestCase
   public void testRecordCustomConstructor2() {
     doTestRecordConstructor((aClass, m) -> Arrays.copyOf(m, 2));
   }
+  
+  public void testRecordCustomConstructor3() {
+    doTestRecordConstructor((aClass, m) -> Arrays.copyOf(m, 2));
+  }
 
   private void doTest() {
     doTest(false);