Support of enhanced Java 12 switch statements in DFA (IDEA-202132, no expressions yet)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/deleteSwitchLabel/afterDeleteCaseMultiLabelJava12Preview.java

@@ -0,0 +1,11 @@
+// "Remove switch label '0-/*x*/1'" "true"
+class Main {
+    static void fff(int x) {
+        if (x > 0) {
+            switch (x) {
+                case 1, 3 /*x*/: System.out.println("one"); //1
+                case 2: System.out.println("two"); //2
+            }
+        }
+    }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/deleteSwitchLabel/afterDeleteCaseRuleJava12Preview.java

@@ -0,0 +1,12 @@
+// "Remove switch branch '-/*x*/1'" "true"
+class Main {
+    static void fff(int x) {
+        if (x > 0) {
+            switch (x) {
+                case 2 -> System.out.println("two"); //2
+                //1
+                /*x*/
+            }
+        }
+    }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/deleteSwitchLabel/afterUnwrapJava12Preview.java

@@ -0,0 +1,19 @@
+// "Unwrap 'switch' statement" "true"
+class Main {
+    static void fff(int x) {
+        if (x == 5) {
+            //1
+            //2
+            //3
+            //4
+            System.out.println("five-ten-fifteen"); //5
+            System.out.println("six"); //6
+            System.out.println("seven"); //7
+            //other
+        }
+    }
+
+    public static void main(String[] args) {
+        fff();
+    }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/deleteSwitchLabel/beforeDeleteCaseMultiLabelJava12Preview.java

@@ -0,0 +1,11 @@
+// "Remove switch label '0-/*x*/1'" "true"
+class Main {
+    static void fff(int x) {
+        if (x > 0) {
+            switch (x) {
+                case 1, 3, 0-<caret>/*x*/1: System.out.println("one"); //1
+                case 2: System.out.println("two"); //2
+            }
+        }
+    }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/deleteSwitchLabel/beforeDeleteCaseRuleJava12Preview.java

@@ -0,0 +1,11 @@
+// "Remove switch branch '-/*x*/1'" "true"
+class Main {
+    static void fff(int x) {
+        if (x > 0) {
+            switch (x) {
+                case 2 -> System.out.println("two"); //2
+                case -<caret>/*x*/1 -> System.out.println("one"); //1
+            }
+        }
+    }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/deleteSwitchLabel/beforeFixAll.java

@@ -3,7 +3,7 @@ class Main {
     void t() {
         int i = 5;
         switch(i) {
-            c<caret>ase 1: case 3: // Apply 'Fix all problems in the file'
+            case <caret>1: case 3: // Apply 'Fix all problems in the file'
                 System.out.println("odd");
                 break;
         }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/deleteSwitchLabel/beforeUnwrapJava12Preview.java

@@ -0,0 +1,22 @@
+// "Unwrap 'switch' statement" "true"
+class Main {
+    static void fff(int x) {
+        if (x == 5) {
+            switch (x) {
+                case 1: System.out.println("one"); //1
+                case 2: System.out.println("two"); //2
+                case 3: System.out.println("three"); //3
+                case 4: System.out.println("four"); //4
+                case 0, <caret>5, 10: System.out.println("five-ten-fifteen"); //5
+                case 6: System.out.println("six"); //6
+                case 7: System.out.println("seven"); //7
+                    break;
+                default: System.out.println("and more"); //other
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        fff();
+    }
+}