Revert "Added the concept of "balance setting transactions"."

This reverts commit c93175183e790cf7f1100dfd554197161a69e6fe.

The feature needs more thought and is not ready for 2.6.1.

5 files changed, 6 insertions, 209 deletions

diff --git a/NEWS b/NEWS
index cd95ed87..ac56c581 100644
--- a/NEWS
+++ b/NEWS
@@ -2,121 +2,7 @@
 
 * 2.6.1
 
-- Added the concept of "balance setting transactions":
-
-  # Setting an account's balance
-
-  You can now manually set an account's balance to whatever you want, at
-  any time.  Here's how it might look at the beginning of your Ledger
-  file:
-
-    2008/07/27 Starting fresh
-        Assets:Checking      = $1,000.00
-        Equity:Opening Balances
-
-  If Assets:Checking is empty, this is no different from omitting the
-  "=".  However, if Assets:Checking did have a prior balance, the amount
-  of the transaction will be auto-calculated so that the final balance
-  of Assets:Checking is now $1,000.00.
-
-  Let me give an example of this.  Say you have this:
-
-    2008/07/27 Starting fresh
-        Assets:Checking          $750.00
-        Equity:Opening Balances
-  
-    2008/07/27 Starting fresh
-        Assets:Checking      = $1,000.00
-        Equity:Adjustments
-
-  These two entries are exactly equivalent to these two:
-
-    2008/07/27 Starting fresh
-        Assets:Checking          $750.00
-        Equity:Opening Balances
-  
-    2008/07/27 Starting fresh
-        Assets:Checking          $250.00
-        Equity:Adjustments
-
-  The use of the "=" sign here is that it sets the transaction's amount
-  to whatever is required to satisfy the assignment.  This is the
-  behavior if the transaction's amount is left empty.
-
-  # Multiple commodities
-
-  As far as commodities go, the = sign only works if the account
-  balance's commodity matches the commodity of the amount after the
-  equals sign.  However, if the account has multiple commodities, only
-  the matching commodity is affected.  Here's what I mean:
-
-    2008/07/24 Opening Balance
-        Assets:Checking        = $250.00            ; we force set it
-        Equity:Opening Balances
-  
-    2008/07/24 Opening Balance
-        Assets:Checking      = EC 250.00          ; we force set it again
-        Equity:Opening Balances
-
-  This is an error, because $250.00 cannot be auto-balanced to match EC
-  250.00.  However:
-
-    2008/07/24 Opening Balance
-        Assets:Checking        = $250.00          ; we force set it again
-        Assets:Checking        EC 100.00          ; and add some EC's
-        Equity:Opening Balances
-  
-    2008/07/24 Opening Balance
-        Assets:Checking      = EC 250.00          ; we force set the EC's
-        Equity:Opening Balances
-
-  This is *not* an error, because the latter auto-balancing transaction
-  only affects the EC 100.00 part of the account's balance; the $250.00
-  part is left alone.
-
-  # Checking statement balances
-
-  When you reconcile a statement, there are typically one or more
-  transactions which result in a known balance.  Here's how you specify
-  that in your Ledger data:
-
-    2008/07/24 Opening Balance
-        Assets:Checking        = $100.00
-        Equity:Opening Balances
-  
-    2008/07/30 We spend money, with a known balance afterward
-        Expenses:Food             $20.00
-        Assets:Checking         = $80.00
-  
-    2008/07/30 Again we spend money, but this time with all the info
-        Expenses:Food             $20.00
-        Assets:Checking          $-20.00 = $60.00
-  
-    2008/07/30 This entry yield an 'unbalanced' error
-        Expenses:Food             $20.00
-        Assets:Checking          $-20.00 = $30.00
-
-  The last entry in this set fails to balance with an unbalanced
-  remainder of $-10.00.  Either the entry must be corrected, or you can
-  have Ledger deal with the remainder automatically:
-
-  2008/07/30 The fixed entry
-      Expenses:Food              $20.00
-      Assets:Checking           $-20.00 = $30.00
-      Equity:Adjustments
-
-  # Conclusion
-
-  This simple feature has all the utility of @check, plus auto-balancing
-  to match known target balances, plus the ability to guarantee that an
-  account which uses only one commodity does contain only that
-  commodity.
-
-  This feature slows down textual parsing slightly, does not affect
-  speed when loading from the binary cache.
-
-- The rest of the changes in the version is all bug fixes (around 45 of
-  them).
+- This version has no new features, it's all bug fixes.
 
 * 2.6.0.90
 
diff --git a/parser.cc b/parser.cc
index c96f2435..7cb65519 100644
--- a/parser.cc
+++ b/parser.cc
@@ -182,10 +182,6 @@ unsigned int parse_ledger_data(config_t&   config,
 					journal, acct);
       if (! journal->price_db.empty())
 	journal->sources.push_back(journal->price_db);
-
-      // Clear out what was set during the textual parsing phase
-      clear_account_xdata acct_cleaner;
-      walk_accounts(*journal->master, acct_cleaner);
     }
   }
 
diff --git a/textual.cc b/textual.cc
index 9ac018fa..4e011189 100644
--- a/textual.cc
+++ b/textual.cc
@@ -201,15 +201,13 @@ transaction_t * parse_transaction(char * line, account_t * account,
       goto finished;
     if (p == ';')
       goto parse_note;
-    if (p == '=' && entry)
-      goto parse_assign;
 
     try {
       unsigned long beg = (long)in.tellg();
 
       xact->amount_expr =
 	parse_amount_expr(in, xact->amount, xact.get(),
-			  PARSE_VALEXPR_NO_REDUCE | PARSE_VALEXPR_NO_ASSIGN);
+			  PARSE_VALEXPR_NO_REDUCE);
 
       unsigned long end = (long)in.tellg();
       xact->amount_expr.expr = std::string(line, beg, end - beg);
@@ -243,8 +241,7 @@ transaction_t * parse_transaction(char * line, account_t * account,
 	  unsigned long beg = (long)in.tellg();
 
 	  if (parse_amount_expr(in, *xact->cost, xact.get(),
-				PARSE_VALEXPR_NO_MIGRATE |
-				PARSE_VALEXPR_NO_ASSIGN))
+				PARSE_VALEXPR_NO_MIGRATE))
 	    throw new parse_error
 	      ("A transaction's cost must evaluate to a constant value");
 
@@ -291,80 +288,6 @@ transaction_t * parse_transaction(char * line, account_t * account,
   DEBUG_PRINT("ledger.textual.parse", "line " << linenum << ": " <<
 	      "Reduced amount is " << xact->amount);
 
-parse_assign:
-  if (entry != NULL) {
-    // Add this amount to the related account now
-
-    account_xdata_t& xdata(account_xdata(*xact->account));
-
-    if (xact->amount) {
-      xdata.value += xact->amount;
-      DEBUG_PRINT("ledger.textual.parse", "line " << linenum << ": " <<
-		  "XACT assign: account total = " << xdata.value);
-    }
-
-    // Parse the optional assigned (= AMOUNT)
-
-    if (in.good() && ! in.eof()) {
-      p = peek_next_nonws(in);
-      if (p == '=') {
-	in.get(p);
-	DEBUG_PRINT("ledger.textual.parse", "line " << linenum << ": " <<
-		    "Found a balance assignment indicator");
-	if (in.good() && ! in.eof()) {
-	  amount_t amt;
-
-	  try {
-	    unsigned long beg = (long)in.tellg();
-
-	    if (parse_amount_expr(in, amt, xact.get(),
-				  PARSE_VALEXPR_NO_MIGRATE))
-	      throw new parse_error
-		("An assigned balance must evaluate to a constant value");
-
-	    DEBUG_PRINT("ledger.textual.parse", "line " << linenum << ": " <<
-			"XACT assign: parsed amt = " << amt);
-
-	    unsigned long end = (long)in.tellg();
-
-	    amount_t diff;
-	    if (xdata.value.type == value_t::AMOUNT)
-	      diff = amt - *((amount_t *) xdata.value.data);
-	    else if (xdata.value.type == value_t::BALANCE)
-	      diff = amt - ((balance_t *) xdata.value.data)->amount(amt.commodity());
-	    else if (xdata.value.type == value_t::BALANCE_PAIR)
-	      diff = amt - ((balance_pair_t *) xdata.value.data)->quantity.amount(amt.commodity());
-	    else
-	      diff = amt;
-
-	    DEBUG_PRINT("ledger.textual.parse", "line " << linenum << ": " <<
-			"XACT assign: diff = " << diff);
-
-	    if (! diff.realzero()) {
-	      if (xact->amount) {
-		transaction_t * temp
-		  = new transaction_t(xact->account, diff, TRANSACTION_CALCULATED);
-		entry->add_transaction(temp);
-
-		DEBUG_PRINT("ledger.textual.parse", "line " << linenum << ": " <<
-			    "Created balancing transaction");
-	      } else {
-		xact->amount = diff;
-		DEBUG_PRINT("ledger.textual.parse", "line " << linenum << ": " <<
-			    "Overwrite null transaction");
-	      }
-	      xdata.value = amt;
-	    }
-	  }
-	  catch (error * err) {
-	    err_desc = "While parsing assigned balance:";
-	    throw err;
-	  }
-	}
-      }
-    }
-  }
-
   // Parse the optional note
 
  parse_note:
diff --git a/valexpr.cc b/valexpr.cc
index 0a2f27ee..4fed821e 100644
--- a/valexpr.cc
+++ b/valexpr.cc
@@ -833,8 +833,7 @@ value_expr_t * parse_value_term(std::istream& in, scope_t * scope,
     bool definition = false;
     if (c == '=') {
       in.get(c);
-      if ((flags & PARSE_VALEXPR_NO_ASSIGN) ||
-	  peek_next_nonws(in) == '=') {
+      if (peek_next_nonws(in) == '=') {
 	in.unget();
 	c = '\0';
       } else {
@@ -1161,16 +1160,10 @@ value_expr_t * parse_logic_expr(std::istream& in, scope_t * scope,
       case '!':
       case '=': {
 	bool negate = c == '!';
-	if (! negate && (flags & PARSE_VALEXPR_NO_ASSIGN)) {
-	  in.unget();
-	  break;
-	}
-	else if ((c = peek_next_nonws(in)) == '=') {
+	if ((c = peek_next_nonws(in)) == '=')
 	  in.get(c);
-	}
-	else {
+	else
 	  unexpected(c, '=');
-	}
 	value_expr prev(node.release());
 	node.reset(new value_expr_t(negate ? value_expr_t::O_NEQ :
 				    value_expr_t::O_EQ));
diff --git a/valexpr.h b/valexpr.h
index 0ea0682b..f0c1ed24 100644
--- a/valexpr.h
+++ b/valexpr.h
@@ -280,7 +280,6 @@ bool compute_amount(value_expr_t * expr, amount_t& amt,
 #define PARSE_VALEXPR_RELAXED	 0x02
 #define PARSE_VALEXPR_NO_MIGRATE 0x04
 #define PARSE_VALEXPR_NO_REDUCE  0x08
-#define PARSE_VALEXPR_NO_ASSIGN  0x10
 
 value_expr_t * parse_value_expr(std::istream& in,
 				scope_t * scope = NULL,