forked from KolibriOS/kolibrios
418 lines
8.5 KiB
Plaintext
418 lines
8.5 KiB
Plaintext
(*
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Copyright 2021-2023 Anton Krotov
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This file is part of CEdit.
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CEdit is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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CEdit is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with CEdit. If not, see <http://www.gnu.org/licenses/>.
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*)
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MODULE ChangeLog;
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IMPORT List, Lines, API, SYSTEM;
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CONST
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boolItemSize = 8;
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fillMap = {0..boolItemSize-1};
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TYPE
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tIntItem = POINTER TO RECORD (List.tItem)
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cnt: INTEGER;
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adr, val: ARRAY 8 OF INTEGER
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END;
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tBoolItem = POINTER TO RECORD (List.tItem)
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map: SET;
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data: ARRAY boolItemSize OF
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RECORD
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adr1, adr2: INTEGER;
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val1, val2, save: BOOLEAN
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END
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END;
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tUntypedPtr = POINTER TO RECORD (List.tItem)
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cnt: INTEGER;
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p: ARRAY 64 OF INTEGER
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END;
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tTypedPtr = POINTER TO RECORD (List.tItem)
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cnt: INTEGER;
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p: ARRAY 64 OF List.tItem
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END;
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tGuard* = POINTER TO RECORD (List.tItem)
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saved*: BOOLEAN
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END;
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tLog* = POINTER TO RECORD
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Log*, TPointers, UPointers: List.tList;
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guard, first: tGuard;
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isLast: BOOLEAN
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END;
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VAR
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CL*: tLog;
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PROCEDURE isLastGuard* (guard: tGuard): BOOLEAN;
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VAR
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item: List.tItem;
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res: BOOLEAN;
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BEGIN
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IF guard # NIL THEN
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item := CL.Log.last;
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WHILE ~(item IS tGuard) DO
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item := item.prev
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END;
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res := guard = item
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ELSE
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res := TRUE
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END
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RETURN res
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END isLastGuard;
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PROCEDURE getFirstGuard (): tGuard;
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VAR
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item: List.tItem;
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BEGIN
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item := CL.Log.first;
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WHILE ~(item IS tGuard) DO
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item := item.next
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END
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RETURN item(tGuard)
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END getFirstGuard;
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PROCEDURE isFirstGuard* (guard: tGuard): BOOLEAN;
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BEGIN
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ASSERT(guard # NIL);
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IF CL.first = NIL THEN
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CL.first := getFirstGuard()
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END
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RETURN guard = CL.first
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END isFirstGuard;
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PROCEDURE setGuard* (_guard: tGuard);
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BEGIN
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CL.guard := _guard;
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CL.isLast := isLastGuard(_guard)
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END setGuard;
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PROCEDURE redo* (item: List.tItem);
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VAR
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i: INTEGER;
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BEGIN
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IF item IS tIntItem THEN
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FOR i := 0 TO item(tIntItem).cnt - 1 DO
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SYSTEM.PUT(item(tIntItem).adr[i], item(tIntItem).val[i])
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END
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ELSIF item IS tBoolItem THEN
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FOR i := 0 TO boolItemSize - 1 DO
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IF i IN item(tBoolItem).map THEN
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SYSTEM.PUT(item(tBoolItem).data[i].adr1, item(tBoolItem).data[i].val1);
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SYSTEM.PUT(item(tBoolItem).data[i].adr2, item(tBoolItem).data[i].val2)
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END
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END
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END
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END redo;
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PROCEDURE clear (guard: tGuard);
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VAR
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item: List.tItem;
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BEGIN
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CL.isLast := TRUE;
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REPEAT
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item := List.pop(CL.Log);
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IF item # guard THEN
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DISPOSE(item)
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END
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UNTIL item = guard;
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List.append(CL.Log, item)
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END clear;
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PROCEDURE save* (guard: tGuard);
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VAR
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item: List.tItem;
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boolItem: tBoolItem;
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cur: List.tItem;
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i: INTEGER;
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line_modified: BOOLEAN;
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BEGIN
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item := CL.Log.first;
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WHILE item # NIL DO
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IF item IS tGuard THEN
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item(tGuard).saved := FALSE
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END;
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item := item.next
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END;
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guard.saved := TRUE;
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cur := CL.guard.prev;
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WHILE cur # NIL DO
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IF cur IS tBoolItem THEN
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boolItem := cur(tBoolItem);
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FOR i := 0 TO boolItemSize - 1 DO
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IF (i IN boolItem.map) & boolItem.data[i].save THEN
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SYSTEM.GET(boolItem.data[i].adr1, line_modified);
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IF line_modified THEN
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EXCL(boolItem.map, i)
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END
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END
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END
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END;
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cur := cur.prev;
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IF boolItem.map = {} THEN
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List.delete(CL.Log, boolItem);
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DISPOSE(boolItem)
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END
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END
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END save;
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PROCEDURE changeWord (adrV, adrX: INTEGER);
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VAR
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item: tIntItem;
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cur: List.tItem;
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BEGIN
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IF ~CL.isLast THEN
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clear(CL.guard)
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END;
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cur := CL.Log.last;
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WHILE (cur # NIL) & ~(cur IS tGuard) & ~(cur IS tIntItem) DO
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cur := cur.prev
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END;
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IF (cur IS tIntItem) & (cur(tIntItem).cnt < LEN(cur(tIntItem).adr)) THEN
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item := cur(tIntItem)
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ELSE
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NEW(item);
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item.cnt := 0;
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List.append(CL.Log, item)
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END;
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item.adr[item.cnt] := adrV;
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SYSTEM.GET(adrX, item.val[item.cnt]);
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INC(item.cnt)
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END changeWord;
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PROCEDURE delSaved*;
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VAR
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boolItem: tBoolItem;
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cur: List.tItem;
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i: INTEGER;
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BEGIN
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cur := CL.guard.next;
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WHILE cur # NIL DO
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IF cur IS tBoolItem THEN
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boolItem := cur(tBoolItem);
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FOR i := 0 TO boolItemSize - 1 DO
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IF (i IN boolItem.map) & boolItem.data[i].save THEN
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EXCL(boolItem.map, i)
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END
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END
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END;
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cur := cur.next;
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IF boolItem.map = {} THEN
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List.delete(CL.Log, boolItem);
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DISPOSE(boolItem)
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END
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END
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END delSaved;
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PROCEDURE delCurSaved*;
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VAR
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boolItem: tBoolItem;
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cur: List.tItem;
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i: INTEGER;
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BEGIN
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cur := CL.guard.prev;
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WHILE (cur # NIL) & ~(cur IS tGuard) DO
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IF cur IS tBoolItem THEN
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boolItem := cur(tBoolItem);
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FOR i := 0 TO boolItemSize - 1 DO
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IF (i IN boolItem.map) & boolItem.data[i].save THEN
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SYSTEM.PUT(boolItem.data[i].adr1, ~boolItem.data[i].val1);
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SYSTEM.PUT(boolItem.data[i].adr2, ~boolItem.data[i].val2);
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EXCL(boolItem.map, i)
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END
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END
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END;
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cur := cur.prev;
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IF boolItem.map = {} THEN
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List.delete(CL.Log, boolItem);
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DISPOSE(boolItem)
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END
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END
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END delCurSaved;
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PROCEDURE changeBool (save: BOOLEAN; VAR v1: BOOLEAN; x1: BOOLEAN; VAR v2: BOOLEAN; x2: BOOLEAN);
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VAR
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item: tBoolItem;
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cur: List.tItem;
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i: INTEGER;
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BEGIN
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IF save THEN
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cur := CL.guard.prev
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ELSE
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IF ~CL.isLast THEN
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clear(CL.guard)
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END;
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cur := CL.Log.last
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END;
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WHILE (cur # NIL) & ~(cur IS tGuard) &
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( ~(cur IS tBoolItem) (*OR (cur(tBoolItem).map = fillMap)*) ) DO
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cur := cur.prev
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END;
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IF (cur IS tBoolItem) & (cur(tBoolItem).map # fillMap) THEN
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item := cur(tBoolItem)
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ELSE
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NEW(item);
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item.map := {};
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IF save THEN
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List.insert(CL.Log, CL.guard.prev, item)
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ELSE
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List.append(CL.Log, item)
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END
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END;
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i := 0;
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WHILE i < boolItemSize DO
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IF ~(i IN item.map) THEN
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item.data[i].adr1 := SYSTEM.ADR(v1);
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item.data[i].val1 := x1;
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item.data[i].adr2 := SYSTEM.ADR(v2);
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item.data[i].val2 := x2;
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item.data[i].save := save;
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INCL(item.map, i);
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i := boolItemSize
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END;
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INC(i)
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END
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END changeBool;
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PROCEDURE changeInt* (VAR v: INTEGER; x: INTEGER);
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BEGIN
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changeWord(SYSTEM.ADR(v), SYSTEM.ADR(x))
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END changeInt;
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PROCEDURE changePtr (VAR v: List.tItem; x: List.tItem);
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BEGIN
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changeWord(SYSTEM.ADR(v), SYSTEM.ADR(x))
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END changePtr;
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PROCEDURE typedPtr (p: List.tItem);
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VAR
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item: tTypedPtr;
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BEGIN
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item := CL.TPointers.last(tTypedPtr);
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IF (item = NIL) OR (item.cnt = LEN(item.p)) THEN
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NEW(item);
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item.cnt := 0;
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List.append(CL.TPointers, item)
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END;
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item.p[item.cnt] := p;
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INC(item.cnt)
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END typedPtr;
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PROCEDURE untypedPtr (p: INTEGER);
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VAR
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item: tUntypedPtr;
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BEGIN
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item := CL.UPointers.last(tUntypedPtr);
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IF (item = NIL) OR (item.cnt = LEN(item.p)) THEN
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NEW(item);
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item.cnt := 0;
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List.append(CL.UPointers, item)
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END;
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item.p[item.cnt] := p;
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INC(item.cnt)
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END untypedPtr;
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PROCEDURE setLog* (_CL: tLog);
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BEGIN
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CL := _CL
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END setLog;
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PROCEDURE create* (VAR maxLength: INTEGER): tLog;
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VAR
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newLog: tLog;
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BEGIN
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NEW(newLog);
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newLog.guard := NIL;
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newLog.first := NIL;
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newLog.isLast := TRUE;
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newLog.Log := List.create(NIL);
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newLog.TPointers := List.create(NIL);
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newLog.UPointers := List.create(NIL);
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CL := newLog;
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Lines.setMaxLength(maxLength)
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RETURN newLog
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END create;
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PROCEDURE destroy* (VAR log: tLog);
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VAR
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item: List.tItem;
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res, i: INTEGER;
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BEGIN
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IF log # NIL THEN
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item := List.pop(log.Log);
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WHILE item # NIL DO
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DISPOSE(item);
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item := List.pop(log.Log)
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END;
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DISPOSE(log.Log);
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item := List.pop(log.TPointers);
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WHILE item # NIL DO
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FOR i := 0 TO item(tTypedPtr).cnt - 1 DO
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DISPOSE(item(tTypedPtr).p[i])
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END;
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DISPOSE(item);
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item := List.pop(log.TPointers)
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END;
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DISPOSE(log.TPointers);
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item := List.pop(log.UPointers);
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WHILE item # NIL DO
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FOR i := 0 TO item(tUntypedPtr).cnt - 1 DO
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res := API._DISPOSE(item(tUntypedPtr).p[i])
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END;
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DISPOSE(item);
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item := List.pop(log.UPointers)
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END;
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DISPOSE(log.UPointers);
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DISPOSE(log)
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END
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END destroy;
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BEGIN
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List.init(changeInt, changePtr);
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Lines.init(changeInt, changePtr, changeBool, typedPtr, untypedPtr)
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END ChangeLog. |