IDEA-184278 Track relations like "greater than", "less than" in data flow

java/java-tests/testData/inspection/dataFlow/fixture/LessThanRelations.java

@@ -0,0 +1,44 @@
+import java.util.*;
+
+class LessThanRelations {
+  // IDEA-184278
+  void m(int value) {
+    for (int i = 0; i < value; i++) {
+      if (<warning descr="Condition 'i < value' is always 'true'">i < value</warning>) System.out.println();
+    }
+  }
+
+  void transitive(int a, int b, int c) {
+    if(a > b && b >= c) {
+      System.out.println("possible");
+      if(<warning descr="Condition 'c == a' is always 'false'">c == a</warning>) {
+        System.out.println("Impossible");
+      }
+      if(<warning descr="Condition 'c > a' is always 'false'">c > a</warning>) {
+        System.out.println("Impossible");
+      }
+    }
+  }
+
+  void aioobe(Object[] arr, int pos) {
+    if(pos >= arr.length) {
+      System.out.println(arr[<warning descr="Array index is out of bounds">pos</warning>]);
+    }
+  }
+
+  void wrongOrder(Object[] arr, Object e) {
+    int index = 0;
+    while(arr[index] != e && <warning descr="Condition 'index < arr.length' is always 'true' when reached">index < arr.length</warning>) {
+      index++;
+    }
+    System.out.println(index);
+  }
+
+  void list(List<String> list, int index) {
+    if(index >= list.size()) {
+      System.out.println("Big index");
+    } else if(index > 0 && <warning descr="Condition '!list.isEmpty()' is always 'true' when reached">!<warning descr="Condition 'list.isEmpty()' is always 'false' when reached">list.isEmpty()</warning></warning>) {
+      System.out.println("ok");
+    }
+  }
+}

java/java-tests/testData/inspection/dataFlow/fixture/NotGreaterIsNotEquals.java

@@ -23,7 +23,7 @@ class Zoo2 {
   void foo(Some me, Some other) {
     if (me.depth < other.depth) {
       System.out.println("less");
-    } else if (other.depth > me.depth) {
+    } else if (<warning descr="Condition 'other.depth > me.depth' is always 'false'">other.depth > me.depth</warning>) {
       System.out.println("more");
     }
   }