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perf: add TrimStart(this StringBuilder #1548

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Merged
belav merged 1 commit into from
Mar 21, 2025
Merged

perf: add TrimStart(this StringBuilder #1548

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4 changes: 2 additions & 2 deletions Src/CSharpier/DocPrinter/DocPrinter.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -46,11 +46,11 @@ public string Print()

this.EnsureOutputEndsWithSingleNewLine();

var result = this.Output.ToString();
if (this.PrinterOptions.TrimInitialLines)
{
result = result.TrimStart('\n', '\r');
this.Output.TrimStart('\n', '\r');
}
var result = this.Output.ToString();

return result;
}
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11 changes: 11 additions & 0 deletions Src/CSharpier/Utilities/StringBuilderExtensions.cs
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Expand Up @@ -21,6 +21,17 @@ public static void Append(this StringBuilder value, CultureInfo cultureInfo, str
}
#endif

public static void TrimStart(this StringBuilder value, params ReadOnlySpan<char> trimChars)
{
int startIndex = 0;
while (startIndex < value.Length && trimChars.IndexOf(value[startIndex]) >= 0)
{
startIndex++;
}

value.Remove(0, startIndex);
}

public static bool EndsWithNewLineAndWhitespace(this StringBuilder stringBuilder)
{
for (var index = 1; index <= stringBuilder.Length; index++)
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