--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.cms/lib/codemirror/src/display/highlight_worker.js	Fri Oct 11 22:40:23 2024 +0000
@@ -0,0 +1,55 @@
+import { getContextBefore, highlightLine, processLine } from "../line/highlight.js"
+import { copyState } from "../modes.js"
+import { bind } from "../util/misc.js"
+
+import { runInOp } from "./operations.js"
+import { regLineChange } from "./view_tracking.js"
+
+// HIGHLIGHT WORKER
+
+export function startWorker(cm, time) {
+  if (cm.doc.highlightFrontier < cm.display.viewTo)
+    cm.state.highlight.set(time, bind(highlightWorker, cm))
+}
+
+function highlightWorker(cm) {
+  let doc = cm.doc
+  if (doc.highlightFrontier >= cm.display.viewTo) return
+  let end = +new Date + cm.options.workTime
+  let context = getContextBefore(cm, doc.highlightFrontier)
+  let changedLines = []
+
+  doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), line => {
+    if (context.line >= cm.display.viewFrom) { // Visible
+      let oldStyles = line.styles
+      let resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null
+      let highlighted = highlightLine(cm, line, context, true)
+      if (resetState) context.state = resetState
+      line.styles = highlighted.styles
+      let oldCls = line.styleClasses, newCls = highlighted.classes
+      if (newCls) line.styleClasses = newCls
+      else if (oldCls) line.styleClasses = null
+      let ischange = !oldStyles || oldStyles.length != line.styles.length ||
+        oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass)
+      for (let i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i]
+      if (ischange) changedLines.push(context.line)
+      line.stateAfter = context.save()
+      context.nextLine()
+    } else {
+      if (line.text.length <= cm.options.maxHighlightLength)
+        processLine(cm, line.text, context)
+      line.stateAfter = context.line % 5 == 0 ? context.save() : null
+      context.nextLine()
+    }
+    if (+new Date > end) {
+      startWorker(cm, cm.options.workDelay)
+      return true
+    }
+  })
+  doc.highlightFrontier = context.line
+  doc.modeFrontier = Math.max(doc.modeFrontier, context.line)
+  if (changedLines.length) runInOp(cm, () => {
+    for (let i = 0; i < changedLines.length; i++)
+      regLineChange(cm, changedLines[i], "text")
+  })
+}