2015 day 8

AOC.Test/Test2015.cs

@@ -13,6 +13,7 @@ public class Test2015
     [DataRow(typeof(Day05), "258", "53")]
     // [DataRow(typeof(Day06), "543903", "14687245")]
     [DataRow(typeof(Day07), "3176", "14710")]
+    [DataRow(typeof(Day08), "1342", "2074")]
     public void TestAllDays(Type dayType, string part1, string part2)
     {
         Common.CheckDay(dayType, part1, part2);
@@ -25,7 +26,8 @@ public class Test2015
     // [DataRow(typeof(Day04), "609043", "6742839")]
     [DataRow(typeof(Day05), "1", "1")]
     [DataRow(typeof(Day06), "1000000", "1000000")]
-    // [DataRow(typeof(Day07), "", "")] // test input doesn't have "a" key
+    // [DataRow(typeof(Day07), "", "")] // test input doesn't have "a" wire
+    [DataRow(typeof(Day08), "12", "19")]
     public void CheckTestInputs(Type dayType, string part1, string part2)
     {
         Day.UseTestInput = true;

AOC2015/Day08.cs

@@ -3,13 +3,19 @@
 /// <summary>
 /// Day 8: <see href="https://adventofcode.com/2015/day/8"/>
 /// </summary>
-public sealed class Day08 : Day
+public sealed partial class Day08 : Day
 {
-    public Day08() : base(2015, 8, "Puzzle Name")
+    [GeneratedRegex(@"^""(\\x..|\\.|.)*""$")]
+    private static partial Regex CharSet();
+
+    public Day08() : base(2015, 8, "Matchsticks")
     {
     }
 
-    public override object Part1() => "";
+    int CharCount(string arg) => CharSet().Match(arg).Groups[1].Captures.Count;
+    int EncodedCount(string arg) => 2 + arg.Sum(c => c is '\\' or '\"' ? 2 : 1);
 
-    public override object Part2() => "";
+    public override object Part1() => Input.Sum(line => line.Length) - Input.Sum(CharCount);
+
+    public override object Part2() => Input.Sum(EncodedCount) - Input.Sum(line => line.Length);
 }

AOC2015/input2015/test08.in

@@ -0,0 +1,4 @@
+""
+"abc"
+"aaa\"aaa"
+"\x27"