KT-26629 Inspection to replace equality check with NaN with isNaN call

2019-03-21 18:19:10 +01:00
parent 07e908f15f
commit 574178882a
18 changed files with 197 additions and 0 deletions
@@ -2368,6 +2368,15 @@
                     language="kotlin"
    />

+    <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.ConvertNaNEqualityInspection"
+                     displayName="Convert equality check with 'NaN' to 'isNaN' call"
+                     groupPath="Kotlin"
+                     groupName="Probable bugs"
+                     enabledByDefault="true"
+                     level="WARNING"
+                     language="kotlin"
+    />
+
    <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.UnusedEqualsInspection"
                     displayName="Unused equals expression"
                     groupPath="Kotlin"
@@ -0,0 +1,7 @@
+<html>
+<body>
+This inspection reports an equality check with <b>Double.NaN</b> which can be replaced with <b>a.isNaN()</b>.
+
+For every floating point value <b>a</b>, <b>a == NaN</b> will always result in <b>false</b>.
+</body>
+</html>