ae5a8496bb
* Use char instead of string for DetectJson * Use faster method * Change DetectIsJon method
72 lines
2.3 KiB
C#
72 lines
2.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using BenchmarkDotNet.Attributes;
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using Umbraco.Tests.Benchmarks.Config;
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namespace Umbraco.Tests.Benchmarks;
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[QuickRunWithMemoryDiagnoserConfig]
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public class DetectJsonBenchmarks
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{
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private string Input { get; set; }
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[GlobalSetup]
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public void Setup()
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{
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Input = "[{test: true},{test:false}]";
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}
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[Benchmark(Baseline = true)]
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public bool StringDetectJson()
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{
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var input = Input.Trim();
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return (input.StartsWith("{") && input.EndsWith("}"))
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|| (input.StartsWith("[") && input.EndsWith("]"));
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}
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[Benchmark]
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public bool CharDetectJson()
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{
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var input = Input.Trim();
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return (input.StartsWith('{') && input.EndsWith('}'))
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|| (input.StartsWith('[') && input.EndsWith(']'));
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}
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[Benchmark]
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public bool CharRangeIndexDetectJson()
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{
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var input = Input.Trim();
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return (input[0] is '[' && input[^1] is ']') || (input[0] is '{' && input[^1] is '}');
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}
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//This is the fastest, however we the check will be less good than before as it'll return true on things like this: [test or {test]
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[Benchmark]
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public bool CharRangeIndexDetectJsonBad()
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{
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var input = Input;
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return input[0] is '{' or '[' || input[^1] is '}' or ']';
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}
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[Benchmark]
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public bool CharDetectJsonTwoLookups()
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{
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var input = Input.Trim();
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var firstChar = input[0];
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var lastChar = input[^1];
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return (firstChar is '[' && lastChar is ']') || (firstChar is '{' && lastChar is '}');
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}
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//| Method | Mean | Error | StdDev | Ratio | Allocated |
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//|---------------------------- |------------:|----------:|----------:|------:|----------:|
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//| StringDetectJson | 103.7203 ns | 1.5370 ns | 0.0842 ns | 1.000 | - |
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//| CharDetectJson | 8.8119 ns | 1.0330 ns | 0.0566 ns | 0.085 | - |
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//| CharRangeIndexDetectJson | 7.8054 ns | 1.2396 ns | 0.0679 ns | 0.075 | - |
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//| CharRangeIndexDetectJsonBad | 0.4597 ns | 0.1882 ns | 0.0103 ns | 0.004 | - |
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//| CharDetectJsonTwoLookups | 7.8292 ns | 1.7397 ns | 0.0954 ns | 0.075 | - |
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}
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