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In formatter, get lineAction directly from applyRuleEdits (#21245)

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Andy 2018-01-17 16:02:42 -08:00 committed by GitHub
parent 095aa771f5
commit 73922301bc
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2 changed files with 43 additions and 24 deletions
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53
src/services/formatting/formatting.ts
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@ -908,24 +908,25 @@ namespace ts.formatting {
let trimTrailingWhitespaces: boolean;
let lineAction = LineAction.None;
if (rule) {
applyRuleEdits(rule, previousItem, previousStartLine, currentItem, currentStartLine);
if (rule.action & (RuleAction.Space | RuleAction.Delete) && currentStartLine !== previousStartLine) {
lineAction = LineAction.LineRemoved;
// Handle the case where the next line is moved to be the end of this line.
// In this case we don't indent the next line in the next pass.
if (currentParent.getStart(sourceFile) === currentItem.pos) {
dynamicIndentation.recomputeIndentation(/*lineAddedByFormatting*/ false);
}
}
else if (rule.action & RuleAction.NewLine && currentStartLine === previousStartLine) {
lineAction = LineAction.LineAdded;
// Handle the case where token2 is moved to the new line.
// In this case we indent token2 in the next pass but we set
// sameLineIndent flag to notify the indenter that the indentation is within the line.
if (currentParent.getStart(sourceFile) === currentItem.pos) {
dynamicIndentation.recomputeIndentation(/*lineAddedByFormatting*/ true);
}
lineAction = applyRuleEdits(rule, previousItem, previousStartLine, currentItem, currentStartLine);
switch (lineAction) {
case LineAction.LineRemoved:
// Handle the case where the next line is moved to be the end of this line.
// In this case we don't indent the next line in the next pass.
if (currentParent.getStart(sourceFile) === currentItem.pos) {
dynamicIndentation.recomputeIndentation(/*lineAddedByFormatting*/ false);
}
break;
case LineAction.LineAdded:
// Handle the case where token2 is moved to the new line.
// In this case we indent token2 in the next pass but we set
// sameLineIndent flag to notify the indenter that the indentation is within the line.
if (currentParent.getStart(sourceFile) === currentItem.pos) {
dynamicIndentation.recomputeIndentation(/*lineAddedByFormatting*/ true);
}
break;
default:
Debug.assert(lineAction === LineAction.None);
}
// We need to trim trailing whitespace between the tokens if they were on different lines, and no rule was applied to put them on the same line
@ -1102,16 +1103,18 @@ namespace ts.formatting {
previousRange: TextRangeWithKind,
previousStartLine: number,
currentRange: TextRangeWithKind,
currentStartLine: number): void {
currentStartLine: number,
): LineAction {
const onLaterLine = currentStartLine !== previousStartLine;
switch (rule.action) {
case RuleAction.Ignore:
// no action required
return;
return LineAction.None;
case RuleAction.Delete:
if (previousRange.end !== currentRange.pos) {
// delete characters starting from t1.end up to t2.pos exclusive
recordDelete(previousRange.end, currentRange.pos - previousRange.end);
return onLaterLine ? LineAction.LineRemoved : LineAction.None;
}
break;
case RuleAction.NewLine:
@ -1119,27 +1122,29 @@ namespace ts.formatting {
// if line1 and line2 are on subsequent lines then no edits are required - ok to exit
// if line1 and line2 are separated with more than one newline - ok to exit since we cannot delete extra new lines
if (rule.flags !== RuleFlags.CanDeleteNewLines && previousStartLine !== currentStartLine) {
return;
return LineAction.None;
}
// edit should not be applied if we have one line feed between elements
const lineDelta = currentStartLine - previousStartLine;
if (lineDelta !== 1) {
recordReplace(previousRange.end, currentRange.pos - previousRange.end, options.newLineCharacter);
return onLaterLine ? LineAction.None : LineAction.LineAdded;
}
break;
case RuleAction.Space:
// exit early if we on different lines and rule cannot change number of newlines
if (rule.flags !== RuleFlags.CanDeleteNewLines && previousStartLine !== currentStartLine) {
return;
return LineAction.None;
}
const posDelta = currentRange.pos - previousRange.end;
if (posDelta !== 1 || sourceFile.text.charCodeAt(previousRange.end) !== CharacterCodes.space) {
recordReplace(previousRange.end, currentRange.pos - previousRange.end, " ");
return onLaterLine ? LineAction.LineRemoved : LineAction.None;
}
break;
}
return LineAction.None;
}
}

14
tests/cases/fourslash/formatObjectBindingPattern.ts Normal file
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@ -0,0 +1,14 @@
///<reference path="fourslash.ts"/>
////const {
////x,
////y,
////} = 0;
format.document();
verify.currentFileContentIs(
`const {
x,
y,
} = 0;`
);