commit a092f9d42eadf0cfe8fc69988cc9aa781be40d9e
author Vladislav Grechko <vladislav.grechko@jetbrains.com> Fri Aug 25 16:20:18 2023 +0200
committer Alexander Udalov <alexander.udalov@jetbrains.com> Mon Aug 28 23:20:05 2023 +0200
tree 0a303552f59579b6a2940933799ce930a27dbc41
parent 3145fbfc29f06e62946bbf20a64a7c0c13ece9b2

Optimize `isKotlinFunctionWithBigArity`

core/compiler.common.jvm/src/org/jetbrains/kotlin/builtins/jvm/JavaToKotlinClassMap.kt

diff --git a/core/compiler.common.jvm/src/org/jetbrains/kotlin/builtins/jvm/JavaToKotlinClassMap.kt b/core/compiler.common.jvm/src/org/jetbrains/kotlin/builtins/jvm/JavaToKotlinClassMap.kt
index bc4afad..ae01b77 100644
--- a/core/compiler.common.jvm/src/org/jetbrains/kotlin/builtins/jvm/JavaToKotlinClassMap.kt
+++ b/core/compiler.common.jvm/src/org/jetbrains/kotlin/builtins/jvm/JavaToKotlinClassMap.kt
@@ -150,7 +150,9 @@
     }
 
     private fun isKotlinFunctionWithBigArity(kotlinFqName: FqNameUnsafe, prefix: String): Boolean {
-        val arityString = kotlinFqName.asString().substringAfter(prefix, "")
+        val fqNameAsString = kotlinFqName.asString()
+        if (!fqNameAsString.startsWith(prefix)) return false
+        val arityString = fqNameAsString.substring(prefix.length)
         if (arityString.isNotEmpty() && !arityString.startsWith('0')) {
             val arity = arityString.toIntOrNull()
             return arity != null && arity >= BuiltInFunctionArity.BIG_ARITY