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Lazily construct placeholder lines in TokenizedBuffer

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This commit is contained in:
Nathan Sobo
2015-06-05 01:19:12 +02:00
parent f585b5bb12
commit 5b494b7b17
1 changed files with 11 additions and 10 deletions
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21
src/tokenized-buffer.coffee
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@@ -112,14 +112,14 @@ class TokenizedBuffer extends Model
throw new Error("No grammar found for path: #{path}")
hasTokenForSelector: (selector) ->
for {tokens} in @tokenizedLines
for token in tokens
for tokenizedLine in @tokenizedLines when tokenizedLine?
for token in tokenizedLine.tokens
return true if selector.matches(token.scopes)
false
retokenizeLines: ->
lastRow = @buffer.getLastRow()
@tokenizedLines = @buildPlaceholderTokenizedLinesForRows(0, lastRow)
@tokenizedLines = new Array(lastRow + 1)
@invalidRows = []
@invalidateRow(0)
@fullyTokenized = false
@@ -248,12 +248,12 @@ class TokenizedBuffer extends Model
@emitter.emit 'did-change', event
retokenizeWhitespaceRowsIfIndentLevelChanged: (row, increment) ->
line = @tokenizedLines[row]
line = @tokenizedLineForRow(row)
if line?.isOnlyWhitespace() and @indentLevelForRow(row) isnt line.indentLevel
while line?.isOnlyWhitespace()
@tokenizedLines[row] = @buildTokenizedLineForRow(row, @stackForRow(row - 1), @openScopesForRow(row))
row += increment
line = @tokenizedLines[row]
line = @tokenizedLineForRow(row)
row - increment
@@ -313,7 +313,7 @@ class TokenizedBuffer extends Model
tokenizedLines
buildPlaceholderTokenizedLinesForRows: (startRow, endRow) ->
@buildPlaceholderTokenizedLineForRow(row) for row in [startRow..endRow]
@buildPlaceholderTokenizedLineForRow(row) for row in [startRow..endRow] by 1
buildPlaceholderTokenizedLineForRow: (row) ->
openScopes = [@grammar.startIdForScope(@grammar.scopeName)]
@@ -341,7 +341,8 @@ class TokenizedBuffer extends Model
null
tokenizedLineForRow: (bufferRow) ->
@tokenizedLines[bufferRow]
if 0 <= bufferRow < @tokenizedLines.length
@tokenizedLines[bufferRow] ?= @buildPlaceholderTokenizedLineForRow(bufferRow)
stackForRow: (bufferRow) ->
@tokenizedLines[bufferRow]?.ruleStack
@@ -418,17 +419,17 @@ class TokenizedBuffer extends Model
tokenForPosition: (position) ->
{row, column} = Point.fromObject(position)
@tokenizedLines[row].tokenAtBufferColumn(column)
@tokenizedLineForRow(row).tokenAtBufferColumn(column)
tokenStartPositionForPosition: (position) ->
{row, column} = Point.fromObject(position)
column = @tokenizedLines[row].tokenStartColumnForBufferColumn(column)
column = @tokenizedLineForRow(row).tokenStartColumnForBufferColumn(column)
new Point(row, column)
bufferRangeForScopeAtPosition: (selector, position) ->
position = Point.fromObject(position)
{openScopes, tags} = @tokenizedLines[position.row]
{openScopes, tags} = @tokenizedLineForRow(position.row)
scopes = openScopes.map (tag) -> atom.grammars.scopeForId(tag)
startColumn = 0