55 lines
1.3 KiB
C#
55 lines
1.3 KiB
C#
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using System.Text.RegularExpressions;
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namespace MullItOver;
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partial class PuzzleParser
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{
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[GeneratedRegex(@"mul\((\d{1,3}),(\d{1,3})\)")]
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private static partial Regex InstructionsRegex();
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[GeneratedRegex(@"mul\((\d{1,3}),(\d{1,3})\)|do\(\)|don't\(\)")]
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private static partial Regex InstructionsWithConditionalsRegex();
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public List<Instruction> Parse(string input)
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{
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var matches = InstructionsRegex().Matches(input);
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return matches
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.Select(Instruction (m) => new MulInstruction(
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int.Parse(m.Groups[1].Value),
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int.Parse(m.Groups[2].Value)
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))
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.ToList();
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}
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public List<Instruction> ParseWithConditionals(string input)
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{
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var instructions = new List<Instruction>();
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var matches = InstructionsWithConditionalsRegex()
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.Matches(input)
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.ToList();
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foreach (var match in matches)
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{
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var firstGroup = match.Groups[0].Value;
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if (firstGroup.Contains("mul"))
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{
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instructions.Add(new MulInstruction(
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int.Parse(match.Groups[1].Value),
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int.Parse(match.Groups[2].Value)
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));
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continue;
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}
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if (firstGroup.Contains('\''))
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{
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instructions.Add(new DontInstruction());
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continue;
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}
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instructions.Add(new DoInstruction());
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}
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return instructions;
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}
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}
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