make sure that balances are automatically recomputed whenever needed

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@782 57a11ea4-9604-0410-9ed3-97b8803252fd

src/engine/Account.c

@@ -103,9 +103,8 @@ xaccMallocAccount( void )
 void
 xaccFreeAccount( Account *acc )
 {
-  int i=0, j=0;
-  Split *s, *debit_s;
-  int dont_free_transaction = 0;
+  int i=0;
+  Split *s;
 
   if (NULL == acc) return;
     
@@ -129,20 +128,7 @@ xaccFreeAccount( Account *acc )
   i=0;
   s = acc->splits[0];
   while (s) {
-    Transaction *trans =  (Transaction *) s->parent;
-
-    j=0;
-    debit_s = trans->splits[0];
-    while (debit_s) {
-      if (debit_s->acc) { dont_free_transaction = 1; break; }
-      j++;
-      debit_s = trans->splits[j];
-    }
-
-    if (!dont_free_transaction) {
-      xaccFreeTransaction( trans );
-    }
-
+    xaccSplitDestroy (s);
     i++;
     s = acc->splits[i];
   }
@@ -233,6 +219,11 @@ xaccAccountInsertSplit ( Account *acc, Split *split )
   acc -> changed = TRUE;
   if( acc->parent != NULL ) acc->parent->saved = FALSE;
 
+  /* if this split belongs to another acount, remove it from 
+   * there first.  We don't want to ever leave the system
+   * in an inconsistent state.
+   */
+  if (split->acc) xaccAccountRemoveSplit (split->acc, split);
   split->acc = acc;
     
   oldsplits = acc->splits;
@@ -273,6 +264,8 @@ xaccAccountInsertSplit ( Account *acc, Split *split )
   acc->splits[acc->numSplits] = NULL;
 
   _free(oldsplits);
+
+  xaccAccountRecomputeBalance (acc);
 }
 
 
@@ -309,7 +302,7 @@ xaccAccountRemoveSplit ( Account *acc, Split *split )
 
 
 /********************************************************************\
- * xaccRecomputeBalance                                             *
+ * xaccAccountRecomputeBalance                                      *
  *   recomputes the partial balances and the current balance for    *
  *   this account.                                                  *
  * 
@@ -337,7 +330,7 @@ xaccAccountRemoveSplit ( Account *acc, Split *split )
 \********************************************************************/
 
 void
-xaccRecomputeBalance( Account * acc )
+xaccAccountRecomputeBalance( Account * acc )
 {
   int  i = 0; 
   double  dbalance    = 0.0;
@@ -528,7 +521,7 @@ xaccIsAccountInList (Account * acc, Account **list)
 \********************************************************************/
 
 void
-xaccRecomputeBalances( Account **list )
+xaccAccountRecomputeBalances( Account **list )
 {
    Account * acc;
    int nacc = 0;
@@ -536,7 +529,7 @@ xaccRecomputeBalances( Account **list )
 
    acc = list[0];
    while (acc) {
-      xaccRecomputeBalance (acc);
+      xaccAccountRecomputeBalance (acc);
       nacc++;
       acc = list[nacc];
    }

src/engine/Account.h

@@ -49,13 +49,13 @@ void         xaccAccountCommitEdit (Account *);
 
 int          xaccGetAccountID (Account *);
 
+/*
+ * The xaccAccountInsertSplit() method will insert the indicated
+ *    split into the indicated account.  If the split already 
+ *    belongs to anothe account, it will be removed from that
+ *    account first. 
+ */
 void         xaccAccountInsertSplit (Account *, Split *);
-void         xaccAccountRemoveSplit (Account *, Split *);
-
-/* the following recompute the partial balances (stored with the transaction)
- * and the total balance, for this account */
-void         xaccRecomputeBalance (Account *);
-void         xaccRecomputeBalances (Account **);
 
 /* The xaccCheckDateOrder() surboutine checks to see if 
  *    a split is in proper sorted date order with respect 

src/engine/AccountP.h

@@ -6,6 +6,13 @@
  * This is the *private* header for the account structure.
  * No one outside of the engine should ever include this file.
  *
+ * This header includes prototypes for "dangerous" functions.
+ * Invoking any of these functions potentially leave the account
+ * in an inconsistent state.  If they are not used in the proper
+ * setting, they can leave the account structures in an inconsistent
+ * state.  Thus, these methods should never be used outside of
+ * the engine, which is why they are "hidden" here. 
+ *
  */
 
 /********************************************************************\
@@ -74,4 +81,20 @@ struct _account {
 };
 
 
+/* The xaccAccountRemoveSplit() routine will remove the indicated split
+ *    from the indicated account.  Note that this will leave the split
+ *    "dangling", i.e. unassigned to any account, and therefore will put
+ *    the engine into an inconsistent state.  After removing a split, 
+ *    it should be immediately destroyed, or it should be inserted into  
+ *    an account.
+ */
+
+void         xaccAccountRemoveSplit (Account *, Split *);
+
+/* the following recompute the partial balances (stored with the
+ * transaction)
+ * and the total balance, for this account */
+void         xaccAccountRecomputeBalance (Account *);
+void         xaccAccountRecomputeBalances (Account **);
+
 #endif /* __XACC_ACCOUNT_P_H__ */

src/engine/Transaction.c

@@ -136,6 +136,7 @@ MarkChanged (Transaction *trans)
 void
 xaccSplitDestroy (Split *split)
 {
+   Account *acc;
    Transaction *trans;
    int numsplits = 0;
    int ismember = 0;
@@ -148,6 +149,7 @@ xaccSplitDestroy (Split *split)
    numsplits = 0;
    s = trans->splits[0];
    while (s) {
+      MARK_SPLIT(s);
       if (s == split) ismember = 1;
       numsplits ++;
       s = trans->splits[numsplits];
@@ -158,20 +160,30 @@ xaccSplitDestroy (Split *split)
     * merely unlink & free the split. 
     */
    if (2 < numsplits) {
+      MARK_SPLIT (split);
       xaccTransRemoveSplit (trans, split);
-      xaccAccountRemoveSplit (split->acc, split);
+      acc = split->acc;
+      xaccAccountRemoveSplit (acc, split);
+      xaccAccountRecomputeBalance (acc);
       xaccFreeSplit (split);
-      xaccSplitRebalance (trans->splits[1]);
+      xaccSplitRebalance (trans->splits[0]);
    } else {
       /* if the transaction has only two splits,
        * remove both of them, and them destroy the 
        * transaction. 
        */
       s = trans->splits[0];
-      xaccAccountRemoveSplit (split->acc, s);
+      acc = s->acc;
+      MARK_SPLIT (s);
+      xaccAccountRemoveSplit (acc, s);
+      xaccAccountRecomputeBalance (acc);
       xaccFreeSplit (s);
+
       s = trans->splits[1];
-      xaccAccountRemoveSplit (split->acc, s);
+      acc = s->acc;
+      MARK_SPLIT (s);
+      xaccAccountRemoveSplit (acc, s);
+      xaccAccountRecomputeBalance (acc);
       xaccFreeSplit (s);
       xaccFreeTransaction (trans);
    }
@@ -355,13 +367,17 @@ xaccTransDestroy (Transaction *trans)
 {
    int i;
    Split *split;
+   Account *acc;
 
    if (!trans) return;
 
    i=0;
    split = trans->splits[i];
    while (split) {
-      xaccAccountRemoveSplit (split->acc, split);
+      MARK_SPLIT (split);
+      acc = split ->acc;
+      xaccAccountRemoveSplit (acc, split);
+      xaccAccountRecomputeBalance (acc); 
       i++;
       split = trans->splits[i];
    }
@@ -437,6 +453,7 @@ xaccSplitRebalance (Split *split)
        */
       s -> damount = - (value / (s->share_price));   
       MARK_SPLIT (s);
+      xaccAccountRecomputeBalance (s->acc); 
 
     } else{
       /* There are no destination splits !! 
@@ -461,9 +478,9 @@ xaccSplitRebalance (Split *split)
 
           /* insert the new split into the transaction and 
            * the same account as the source split */
+          MARK_SPLIT (s);
           xaccTransAppendSplit (trans, s); 
           xaccAccountInsertSplit (split->acc, s);
-          MARK_SPLIT (s);
        }
 #endif
 
@@ -486,6 +503,7 @@ xaccSplitRebalance (Split *split)
     s = trans->splits[0];
     s -> damount = - (value / (s->share_price));   
     MARK_SPLIT (s);
+    xaccAccountRecomputeBalance (s->acc); 
   }
 
   /* hack alert -- if the "force-double-entry" flag is set,
@@ -713,10 +731,9 @@ xaccTransSetDate (Transaction *trans, int day, int mon, int year)
    i=0;
    split = trans->splits[i];
    while (split) {
-      acc = (Account *) split->acc;
+      acc = split->acc;
       xaccAccountRemoveSplit (acc, split);
       xaccAccountInsertSplit (acc, split);
-      xaccRecomputeBalance (acc);
 
       i++;
       split = trans->splits[i];
@@ -874,6 +891,7 @@ xaccSplitSetReconcile (Split *split, char recn)
 {
    split->reconciled = recn;
    MARK_SPLIT (split);
+   xaccAccountRecomputeBalance (split->acc);
 }
 
 /********************************************************************\