recompute character to column when comparing indentations#12375
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| function characterToColumn(startLinePosition: number, characterInLine: number): number{ | ||
| let column = 0; | ||
| for (let i = 0; i < characterInLine; i++){ | ||
| column += sourceFile.text.charCodeAt(startLinePosition + i) === CharacterCodes.tab ? options.tabSize : 1; |
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This doesn't seem quite right. If i have <space><tab> then this math tells me i'm at (tabSize + 1) when i should be at tabSize.
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Roslyn's algorithm:
publicstaticintConvertTabToSpace(thisstringtextSnippet,inttabSize,intinitialColumn,intendPosition){Contract.Requires(tabSize>0);Contract.Requires(endPosition>=0&&endPosition<=textSnippet.Length);intcolumn=initialColumn;// now this will calculate indentation regardless of actual content on the buffer except TABfor(inti=0;i<endPosition;i++){if(textSnippet[i]=='\t'){column+=tabSize-column%tabSize;}else{column++;}}returncolumn-initialColumn;}ContributorAuthor
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fair enough, thanks for catching this
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vladima commented Nov 19, 2016
failure on the CI server is not related to this PR and caused by API changes in tslint - #12376 should address it |
mhegazy approved these changes Nov 21, 2016
Contributor
mhegazy commented Nov 21, 2016
@vladima can you port this to release-2.1 |
vladima added a commit that referenced this pull request Nov 21, 2016
recompute character to column when comparing indentations
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vladima commented Nov 21, 2016
already done |
vladima added a commit that referenced this pull request Nov 21, 2016
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we always compute indentation as column so in order to compare it with character position in line - character position must be converted to column as well.
fixes#12175