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Improve performance of UseConsistentIndentation -> 35% speedup for formatter #1458

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merged 4 commits into from
Apr 24, 2020
Merged

Improve performance of UseConsistentIndentation -> 35% speedup for formatter #1458

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65b645b
only go back as much as needed
Apr 20, 2020
4ebc4bf
refactor into function
Apr 22, 2020
d5e5229
simplify
Apr 22, 2020
2814147
Apply suggestions from code review
bergmeister Apr 22, 2020
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22 changes: 18 additions & 4 deletions Rules/UseConsistentIndentation.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -219,10 +219,7 @@ public override IEnumerable<DiagnosticRecord> AnalyzeScript(Ast ast, string file
}
}

var lineHasPipelineBeforeToken = tokens.Any(oneToken =>
oneToken.Kind == TokenKind.Pipe &&
oneToken.Extent.StartLineNumber == token.Extent.StartLineNumber &&
oneToken.Extent.StartColumnNumber < token.Extent.StartColumnNumber);
bool lineHasPipelineBeforeToken = LineHasPipelineBeforeToken(tokens, tokenIndex, token);

AddViolation(token, tempIndentationLevel, diagnosticRecords, ref onNewLine, lineHasPipelineBeforeToken);
}
Expand Down Expand Up @@ -257,6 +254,23 @@ public override IEnumerable<DiagnosticRecord> AnalyzeScript(Ast ast, string file
return diagnosticRecords;
}

private static bool LineHasPipelineBeforeToken(Token[] tokens, int tokenIndex, Token token)
{
int searchIndex = tokenIndex;
int searchLine = token.Extent.StartLineNumber;
do
{
searchLine = tokens[searchIndex].Extent.StartLineNumber;
int searchcolumn = tokens[searchIndex].Extent.StartColumnNumber;
if (tokens[searchIndex].Kind == TokenKind.Pipe && searchcolumn < token.Extent.StartColumnNumber)
{
return true;
}
searchIndex--;
} while (searchLine == token.Extent.StartLineNumber && searchIndex >= 0);
return false;
}

private static CommandBaseAst LastPipeOnFirstLineWithPipeUsage(PipelineAst pipelineAst)
{
CommandBaseAst lastPipeOnFirstLineWithPipeUsage = pipelineAst.PipelineElements[0];
Expand Down