Name Suggester: Do not strip "get"/"is"/"set" prefixes if remaining sequence is not upper-cased

#KT-7399 Fixed

idea/idea-core/src/org/jetbrains/kotlin/idea/core/refactoring/JetNameSuggester.java

@@ -192,11 +192,22 @@ public class JetNameSuggester {
         }
     }
 
+    private static final String[] ACCESSOR_PREFIXES = { "get", "is", "set" };
+
     private static void addCamelNames(ArrayList<String> result, String name, JetNameValidator validator) {
         if (name == "") return;
         String s = deleteNonLetterFromString(name);
-        if (s.startsWith("get") || s.startsWith("set")) s = s.substring(3);
+
-        else if (s.startsWith("is")) s = s.substring(2);
+        for (String prefix : ACCESSOR_PREFIXES) {
+            if (!s.startsWith(prefix)) continue;
+
+            int len = prefix.length();
+            if (len < s.length() && Character.isUpperCase(s.charAt(len))) {
+                s = s.substring(len);
+                break;
+            }
+        }
+
         for (int i = 0; i < s.length(); ++i) {
             if (i == 0) {
                 addName(result, StringUtil.decapitalize(s), validator);

idea/testData/quickfix/createFromUsage/createFunction/call/afterDoNotStripPrefix.kt

@@ -0,0 +1,10 @@
+// "Create function 'foo'" "true"
+class Settings
+
+fun isModified(settings: Settings, c: C) = c.foo(settings)
+
+class C {
+    fun foo(settings: Settings): Any {
+        throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+}

idea/testData/quickfix/createFromUsage/createFunction/call/afterStripPrefix.kt

@@ -0,0 +1,10 @@
+// "Create function 'foo'" "true"
+class SetOptions
+
+fun isModified(setOptions: SetOptions, c: C) = c.foo(setOptions)
+
+class C {
+    fun foo(options: SetOptions): Any {
+        throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+}

idea/testData/quickfix/createFromUsage/createFunction/call/beforeDoNotStripPrefix.kt

@@ -0,0 +1,7 @@
+// "Create function 'foo'" "true"
+class Settings
+
+fun isModified(settings: Settings, c: C) = c.<caret>foo(settings)
+
+class C {
+}

idea/testData/quickfix/createFromUsage/createFunction/call/beforeStripPrefix.kt

@@ -0,0 +1,7 @@
+// "Create function 'foo'" "true"
+class SetOptions
+
+fun isModified(setOptions: SetOptions, c: C) = c.<caret>foo(setOptions)
+
+class C {
+}

idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixTestGenerated.java

@@ -1586,6 +1586,12 @@ public class QuickFixTestGenerated extends AbstractQuickFixTest {
                     doTest(fileName);
                 }
 
+                @TestMetadata("beforeDoNotStripPrefix.kt")
+                public void testDoNotStripPrefix() throws Exception {
+                    String fileName = JetTestUtils.navigationMetadata("idea/testData/quickfix/createFromUsage/createFunction/call/beforeDoNotStripPrefix.kt");
+                    doTest(fileName);
+                }
+
                 @TestMetadata("beforeExtensionFunOnTrait.kt")
                 public void testExtensionFunOnTrait() throws Exception {
                     String fileName = JetTestUtils.navigationMetadata("idea/testData/quickfix/createFromUsage/createFunction/call/beforeExtensionFunOnTrait.kt");
@@ -1778,6 +1784,12 @@ public class QuickFixTestGenerated extends AbstractQuickFixTest {
                     doTest(fileName);
                 }
 
+                @TestMetadata("beforeStripPrefix.kt")
+                public void testStripPrefix() throws Exception {
+                    String fileName = JetTestUtils.navigationMetadata("idea/testData/quickfix/createFromUsage/createFunction/call/beforeStripPrefix.kt");
+                    doTest(fileName);
+                }
+
                 @TestMetadata("beforeThisInClass.kt")
                 public void testThisInClass() throws Exception {
                     String fileName = JetTestUtils.navigationMetadata("idea/testData/quickfix/createFromUsage/createFunction/call/beforeThisInClass.kt");