From c88de846acc73554f382bc9be4aaf0f777198be3 Mon Sep 17 00:00:00 2001
From: Yuri Orlov <yorlov@stiltsoft.com>
Date: Sat, 7 Dec 2024 17:33:49 +0300
Subject: [PATCH] =?UTF-8?q?=D0=A0=D0=B5=D1=88=D0=B0=D0=B5=D0=BC=20=D0=B2?=
 =?UTF-8?q?=20=D0=BB=D0=BE=D0=B1?=
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---
 src/main/kotlin/CustomAdt.kt | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/main/kotlin/CustomAdt.kt b/src/main/kotlin/CustomAdt.kt
index c30e0c4..e07e2ce 100644
--- a/src/main/kotlin/CustomAdt.kt
+++ b/src/main/kotlin/CustomAdt.kt
@@ -9,7 +9,13 @@ sealed interface ParseResult {
 object CustomAdt {
 
     fun parseInt(str: String): ParseResult {
-        TODO()
-    }
+        if (str.startsWith("--")) return ParseResult.Failure(1, '-')
 
+        try {
+            return ParseResult.Success(str.toInt())
+        } catch (_: NumberFormatException) {
+            val pos = str.indexOfFirst { ch -> !ch.isDigit() }
+            return ParseResult.Failure(pos, str[pos])
+        }
+    }
 }
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