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JavaScript Highlighter: batch attributed string updates to vastly improve 

performance
This commit is contained in:
Shadowfacts 2020-04-06 19:31:35 -04:00
parent c89d6d5f39
commit d353fabd69
Signed by: shadowfacts
GPG Key ID: 94A5AB95422746E5
1 changed files with 3 additions and 0 deletions
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3
MongoView/Synax Highlighting/JavaScriptHighlighter.swift
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@ -73,6 +73,7 @@ class JavaScriptHighlighter {
} }
func highlight() { func highlight() {
attributed.beginEditing()
let fullRange = NSRange(location: 0, length: attributed.length) let fullRange = NSRange(location: 0, length: attributed.length)
attributed.setAttributes([ attributed.setAttributes([
.foregroundColor: NSColor.textColor, .foregroundColor: NSColor.textColor,
@ -83,6 +84,8 @@ class JavaScriptHighlighter {
while let char = peek(), !expressionEnds.contains(char) { while let char = peek(), !expressionEnds.contains(char) {
consumeExpression() consumeExpression()
} }
attributed.endEditing()
} }
private func emit(token: TokenType, range: NSRange) { private func emit(token: TokenType, range: NSRange) {