SplitIfAction and ExtractIfConditionAction code unified

Fixes IDEA-152047 Better "Split into 2 if's" result for else-if cases

java/java-tests/testData/codeInsight/splitIfAction/afterChain.java

@@ -0,0 +1,11 @@
+class C {
+    void foo(boolean a, boolean b, boolean c) {
+        if (a) {
+            if (b) {
+                System.out.println("ab");
+            } else if (c) {
+                System.out.println("ac");
+            }
+        }
+    }
+}

java/java-tests/testData/codeInsight/splitIfAction/afterChain2.java

@@ -0,0 +1,15 @@
+class C {
+    void foo(boolean a, boolean b, boolean c, boolean d, boolean e) {
+        /*c3*/
+        /*c4*/
+        if (a &&/*c1*/ b) {
+            if (c &&/*c2*/ d) {
+                System.out.println("abcd");
+            } else if (e) {
+                System.out.println("abe");
+            } else {
+                System.out.println("ab");
+            }
+        }
+    }
+}

java/java-tests/testData/codeInsight/splitIfAction/afterChain3.java

@@ -0,0 +1,16 @@
+class C {
+    void foo(boolean a, boolean b, boolean c, boolean d, boolean e) {
+        /*c3*/
+        if (a &&/*c1*/ b) {
+            if (c &&/*c2*/ d) {
+                System.out.println("abcd");
+            } else if (e) {
+                System.out.println("abe");
+            } else if (a && /*c4*/ c) {
+                System.out.println("ac");
+            }
+        } else if (a && /*c4*/ c) {
+            System.out.println("ac");
+        }
+    }
+}

java/java-tests/testData/codeInsight/splitIfAction/afterComment.java

@@ -1,5 +1,6 @@
 class C {
     void foo() {
+        //comment
         if (a) {
             call();
         } else if (b) {

java/java-tests/testData/codeInsight/splitIfAction/afterCommentInside.java

@@ -0,0 +1,10 @@
+class C {
+    void foo() {
+        //comment
+        if (a /*inside*/ || c) {
+            call();
+        } else if (b) {
+            call();
+        }
+    }
+}

java/java-tests/testData/codeInsight/splitIfAction/afterWithoutSpaces.java

@@ -1,8 +1,8 @@
 public class SplitCondition {
   private static void appendString(StringBuilder builder, boolean condition) {
-    if (condition) {
-        if (builder.length() > 0) {
-        }
-    }
+      if (condition) {
+          if (builder.length() > 0) {
+          }
+      }
   }
 }

java/java-tests/testData/codeInsight/splitIfAction/beforeChain.java

@@ -0,0 +1,9 @@
+class C {
+    void foo(boolean a, boolean b, boolean c) {
+        if (a &<caret>& b) {
+            System.out.println("ab");
+        } else if(a && c) {
+            System.out.println("ac");
+        }
+    }
+}

java/java-tests/testData/codeInsight/splitIfAction/beforeChain2.java

@@ -0,0 +1,11 @@
+class C {
+    void foo(boolean a, boolean b, boolean c, boolean d, boolean e) {
+        if (a &&/*c1*/ b &<caret>& c &&/*c2*/ d) {
+            System.out.println("abcd");
+        } else if(a /*c3*/ && b && e) {
+            System.out.println("abe");
+        } else if(a && /*c4*/ b) {
+            System.out.println("ab");
+        }
+    }
+}

java/java-tests/testData/codeInsight/splitIfAction/beforeChain3.java

@@ -0,0 +1,11 @@
+class C {
+    void foo(boolean a, boolean b, boolean c, boolean d, boolean e) {
+        if (a &&/*c1*/ b &<caret>& c &&/*c2*/ d) {
+            System.out.println("abcd");
+        } else if(a /*c3*/ && b && e) {
+            System.out.println("abe");
+        } else if(a && /*c4*/ c) {
+            System.out.println("ac");
+        }
+    }
+}

java/java-tests/testData/codeInsight/splitIfAction/beforeComment.java

@@ -1,6 +1,6 @@
 class C {
     void foo() {
-        if (a |<caret>| //comment 
+        if (a |<caret>| //comment
             b) {
             call();
         }

java/java-tests/testData/codeInsight/splitIfAction/beforeCommentInside.java

@@ -0,0 +1,8 @@
+class C {
+    void foo() {
+        if (a /*inside*/ || c |<caret>| //comment
+            b) {
+            call();
+        }
+    }
+}