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Hold at most 4 snapshots per file in the server. This is about 1K per file.

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This commit is contained in:
steveluc 2015-03-09 11:57:50 -07:00
parent 04320e415e
commit 37c6f69f01
1 changed files with 8 additions and 0 deletions
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8
src/server/editorServices.ts
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@ -1073,6 +1073,7 @@ module ts.server {
static changeNumberThreshold = 8;
static changeLengthThreshold = 256;
static maxVersions = 8;
// REVIEW: can optimize by coalescing simple edits
edit(pos: number, deleteLen: number, insertedText?: string) {
@ -1133,6 +1134,13 @@ module ts.server {
this.currentVersion = snap.version;
this.versions[snap.version] = snap;
this.changes = [];
if ((this.currentVersion - this.minVersion) >= ScriptVersionCache.maxVersions) {
var oldMin = this.minVersion;
this.minVersion = (this.currentVersion - ScriptVersionCache.maxVersions) + 1;
for (var j = oldMin; j < this.minVersion; j++) {
this.versions[j] = undefined;
}
}
}
return snap;
}