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LineMap.linesByDelta and translatePosition use common traverseByDelta

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This commit is contained in:
Nathan Sobo
2012-02-29 17:46:22 -07:00
parent f394716508
commit 03dcce575c
1 changed files with 33 additions and 28 deletions
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61
src/atom/line-map.coffee
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@@ -89,21 +89,16 @@ class LineMap
linesByDelta: (deltaType, startRow, endRow) ->
lines = []
delta = new Point
for lineFragment in @lineFragments
break if delta.row > endRow
if delta.row >= startRow
if pendingFragment
pendingFragment = pendingFragment.concat(lineFragment)
else
pendingFragment = _.clone(lineFragment)
if pendingFragment[deltaType].row > 0
pendingFragment.bufferDelta = new Point(1, 0)
lines.push pendingFragment
pendingFragment = null
delta = delta.add(lineFragment[deltaType])
pendingFragment = null
@traverseByDelta deltaType, new Point(startRow, 0), new Point(endRow, Infinity), (lineFragment) ->
if pendingFragment
pendingFragment = pendingFragment.concat(lineFragment)
else
pendingFragment = _.clone(lineFragment)
if pendingFragment[deltaType].row > 0
pendingFragment.bufferDelta = new Point(1, 0)
lines.push pendingFragment
pendingFragment = null
lines
translatePosition: (sourceDeltaType, targetDeltaType, sourcePosition, options={}) ->
@@ -112,9 +107,6 @@ class LineMap
wrapAtSoftNewlines = options.wrapAtSoftNewlines ? false
skipAtomicTokens = options.skipAtomicTokens ? false
sourceDelta = new Point
targetDelta = new Point
if sourcePosition.column < 0
sourcePosition.column = 0
@@ -122,21 +114,20 @@ class LineMap
sourcePosition.row = 0
sourcePosition.column = 0
for lineFragment in @lineFragments
nextSourceDelta = sourceDelta.add(lineFragment[sourceDeltaType])
break if nextSourceDelta.isGreaterThan(sourcePosition)
sourceDelta = nextSourceDelta
targetDelta = targetDelta.add(lineFragment[targetDeltaType])
traversalResult = @traverseByDelta(sourceDeltaType, sourcePosition)
lastLineFragment = traversalResult.lastLineFragment
sourceDelta = traversalResult[sourceDeltaType]
targetDelta = traversalResult[targetDeltaType]
if lineFragment.isAtomic
if lastLineFragment.isAtomic
if skipAtomicTokens and sourcePosition.column > sourceDelta.column
return new Point(targetDelta.row, targetDelta.column + lineFragment.text.length)
return new Point(targetDelta.row, targetDelta.column + lastLineFragment.text.length)
else
return targetDelta
maxSourceColumn = sourceDelta.column + lineFragment.text.length
maxTargetColumn = targetDelta.column + lineFragment.text.length
if lineFragment.isSoftWrapped() and sourcePosition.column >= maxSourceColumn
maxSourceColumn = sourceDelta.column + lastLineFragment.text.length
maxTargetColumn = targetDelta.column + lastLineFragment.text.length
if lastLineFragment.isSoftWrapped() and sourcePosition.column >= maxSourceColumn
if wrapAtSoftNewlines
return new Point(targetDelta.row + 1, 0)
else
@@ -148,6 +139,20 @@ class LineMap
targetColumn = targetDelta.column + (sourcePosition.column - sourceDelta.column)
new Point(targetDelta.row, Math.min(maxTargetColumn, targetColumn))
traverseByDelta: (deltaType, startPosition, endPosition=startPosition, iterator=null) ->
traversalDelta = new Point
screenDelta = new Point
bufferDelta = new Point
for lineFragment in @lineFragments
iterator(lineFragment) if traversalDelta.isGreaterThanOrEqual(startPosition) and iterator?
traversalDelta = traversalDelta.add(lineFragment[deltaType])
break if traversalDelta.isGreaterThan(endPosition)
screenDelta = screenDelta.add(lineFragment.screenDelta)
bufferDelta = bufferDelta.add(lineFragment.bufferDelta)
{ screenDelta, bufferDelta, lastLineFragment: lineFragment }
logLines: (start=0, end=@screenLineCount() - 1)->
for row in [start..end]
line = @lineForScreenRow(row).text