Change extension properties on ClassName into functions, to be more distinct from other String extensions.

libraries/kotlinx-metadata/jvm/api/kotlinx-metadata-jvm.api

@@ -1,5 +1,6 @@
 public final class kotlinx/metadata/ClassNameKt {
 	public static final fun isLocal (Ljava/lang/String;)Z
+	public static final fun isLocalClassName (Ljava/lang/String;)Z
 }
 
 public abstract interface annotation class kotlinx/metadata/ExperimentalContextReceivers : java/lang/annotation/Annotation {
@@ -1143,6 +1144,7 @@ public final class kotlinx/metadata/jvm/JvmMetadataUtil {
 	public static final fun Metadata (Ljava/lang/Integer;[I[Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/Integer;)Lkotlin/Metadata;
 	public static synthetic fun Metadata$default (Ljava/lang/Integer;[I[Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/Integer;ILjava/lang/Object;)Lkotlin/Metadata;
 	public static final fun getJvmInternalName (Ljava/lang/String;)Ljava/lang/String;
+	public static final fun toJvmInternalName (Ljava/lang/String;)Ljava/lang/String;
 }
 
 public final class kotlinx/metadata/jvm/JvmMethodSignature : kotlinx/metadata/jvm/JvmMemberSignature {

libraries/kotlinx-metadata/jvm/src/kotlinx/metadata/jvm/jvmMetadataUtil.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -8,16 +8,22 @@
 package kotlinx.metadata.jvm
 
 import kotlinx.metadata.ClassName
-import kotlinx.metadata.isLocal
+import kotlinx.metadata.isLocalClassName
 
 /**
- * JVM internal name of the class, where package names are separated by '/', and class names are separated by '$',
- * for example: `"org/foo/bar/Baz$Nested"`
+ * Converts [this] to a JVM internal name of the class, where package names are separated by '/', and class names are separated by '$',
+ * for example: `"org/foo/bar/Baz.Nested"` -> `"org/foo/bar/Baz$Nested"`
  */
-val ClassName.jvmInternalName: String
-    get() =
-        if (this.isLocal) substring(1)
-        else replace('.', '$')
+fun ClassName.toJvmInternalName(): String =
+    if (this.isLocalClassName()) substring(1)
+    else replace('.', '$')
+
+@Deprecated(
+    "Renamed to toJvmInternalName() to avoid confusion with String properties",
+    ReplaceWith("toJvmInternalName()"),
+    level = DeprecationLevel.WARNING
+)
+val ClassName.jvmInternalName: String get() = toJvmInternalName()
 
 /**
  * Helper function to instantiate [Metadata].

libraries/kotlinx-metadata/jvm/test/kotlinx/metadata/test/MetadataSmokeTest.kt

@@ -139,14 +139,14 @@ class MetadataSmokeTest {
             className
         }
         assertEquals(".kotlinx/metadata/test/MetadataSmokeTest\$jvmInternalName\$L", l)
-        assertEquals("kotlinx/metadata/test/MetadataSmokeTest\$jvmInternalName\$L", l.jvmInternalName)
+        assertEquals("kotlinx/metadata/test/MetadataSmokeTest\$jvmInternalName\$L", l.toJvmInternalName())
 
         val coroutineContextKey = ClassNameReader().run {
             (KotlinClassMetadata.read(CoroutineContext.Key::class.java.readMetadata()) as KotlinClassMetadata.Class).accept(this)
             className
         }
         assertEquals("kotlin/coroutines/CoroutineContext.Key", coroutineContextKey)
-        assertEquals("kotlin/coroutines/CoroutineContext\$Key", coroutineContextKey.jvmInternalName)
+        assertEquals("kotlin/coroutines/CoroutineContext\$Key", coroutineContextKey.toJvmInternalName())
     }
 
     @Test

libraries/kotlinx-metadata/src/kotlinx/metadata/ClassName.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -18,5 +18,16 @@ package kotlinx.metadata
  */
 typealias ClassName = String // Not a value class because of Java usages
 
-val ClassName.isLocal: Boolean
-    get() = this.startsWith(".")
+/**
+ * Checks whether a class name [this] represents a local class or an anonymous object.
+ *
+ * A class name represents a local class or an anonymous object if it starts with '.' (dot).
+ */
+fun ClassName.isLocalClassName(): Boolean = this.startsWith(".")
+
+@Deprecated(
+    "Renamed to isLocalClassName() to avoid confusion with String properties",
+    ReplaceWith("isLocalClassName()"),
+    level = DeprecationLevel.WARNING
+)
+val ClassName.isLocal: Boolean get() = isLocalClassName()

libraries/kotlinx-metadata/src/kotlinx/metadata/internal/writeUtils.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -8,7 +8,7 @@ package kotlinx.metadata.internal
 import kotlinx.metadata.ClassName
 import kotlinx.metadata.KmAnnotation
 import kotlinx.metadata.KmAnnotationArgument
-import kotlinx.metadata.isLocal
+import kotlinx.metadata.isLocalClassName
 import org.jetbrains.kotlin.metadata.ProtoBuf
 import org.jetbrains.kotlin.metadata.deserialization.Flags
 import org.jetbrains.kotlin.metadata.serialization.StringTable
@@ -107,7 +107,7 @@ fun KmAnnotationArgument.writeAnnotationArgument(strings: StringTable): ProtoBuf
     }
 
 internal fun StringTable.getClassNameIndex(name: ClassName): Int =
-    if (name.isLocal)
+    if (name.isLocalClassName())
         getQualifiedClassNameIndex(name.substring(1), true)
     else
         getQualifiedClassNameIndex(name, false)