diff options
| -rw-r--r-- | Makefile | 3 | ||||
| -rw-r--r-- | lib/RowSnapshot.jsm | 58 |
2 files changed, 60 insertions, 1 deletions
@@ -100,7 +100,8 @@ IMG := $(IMGICON) $(IMGOTHER) LIB := lib/PublicSuffixList.jsm lib/Punycode.jsm lib/FrameModule.jsm \ lib/CallbackWrapper.jsm lib/HttpRequestHeaders.jsm \ lib/PendingRequests.jsm lib/CookieCache.jsm lib/UriTools.jsm \ - lib/LiquidDict.jsm lib/HostMap.jsm lib/Tools.jsm + lib/LiquidDict.jsm lib/HostMap.jsm lib/Tools.jsm \ + lib/RowSnapshot.jsm # The locale folder is split into parts because it's a long list # and it's somewhat easier to read this way diff --git a/lib/RowSnapshot.jsm b/lib/RowSnapshot.jsm new file mode 100644 index 0000000..edc6bc9 --- /dev/null +++ b/lib/RowSnapshot.jsm @@ -0,0 +1,58 @@ +/******************************************************************************* + + ηMatrix - a browser extension to black/white list requests. + Copyright (C) 2014-2019 Raymond Hill + Copyright (C) 2019-2020 Alessio Vanni + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see {http://www.gnu.org/licenses/}. + + Home: https://gitlab.com/vannilla/ematrix + uMatrix Home: https://github.com/gorhill/uMatrix +*/ + +'use strict'; + +// Apparently, for this specific data structure using a constructor is +// faster than an object literal. +// I don't really believe it, but let's keep things as they are. +// Now a module to keep things more organized (might make things slower.) + +var EXPORTED_SYMBOLS = ['RowSnapshot']; + +var RowSnapshot = function (matrix, src, dest, domain) { + this.domain = domain; + this.temporary = matrix.tMatrix.evaluateRowZXY(src, dest); + this.permanent = matrix.pMatrix.evaluateRowZXY(src, dest); + this.counts = RowSnapshot.counts(matrix).slice(); + this.totals = RowSnapshot.counts(matrix).slice(); +}; + +RowSnapshot.memoizedCounts = undefined; + +RowSnapshot.counts = function (matrix) { + if (RowSnapshot.memoizedCounts !== undefined) { + return RowSnapshot.memoizedCounts; + } + + let aa = []; + let n = matrix.Matrix.columnHeaderIndices.size; + + for (let i=0; i<n; ++i) { + aa[i] = 0; + } + + RowSnapshot.memoizedCounts = aa; + + return aa; +}; |