Changeset 1564 for cobra/trunk/Source/CobraParser.cobra

Timestamp:

07/31/08 05:41:13 (5 months ago)

Author:

Chuck.Esterbrook

Message:

Added new all and any unary operators that take something enumerable (such as a list, set or generator) and return a boolean (true or false) indicating if all or any of the elements are true.

Files:

• cobra/trunk/Source/CobraParser.cobra (modified) (2 diffs)

cobra/trunk/Source/CobraParser.cobra

@@ -2380 +2380 @@
                         'TILDE': _binaryOpPrec['PLUS']+1,
                         'NOT':   _binaryOpPrec['AND']+1,
+                        'ALL':   _binaryOpPrec['AND']+1,  # have to admit I'm just guessing at the precendence level for 'any' and 'all'. experience will tell. TODO: fix or not, then retire this comment (2008-07-31)
+                        'ANY':   _binaryOpPrec['AND']+1,
                         'REF':   _binaryOpPrec['STARSTAR']+1,
                         'OLD':   _binaryOpPrec['STARSTAR']+1,
@@ -2479 +2481 @@
                         token = .grab
                         prec = _unaryOpPrec[peek]
+                        unaryExpr = .expression(prec)
                         branch token.which
-                                on 'OLD'
-                                        return OldExpr(token, .expression(prec))
-                                on 'REF'
-                                        refTo = .expression(prec)
-                                        return RefExpr(token, refTo)
-                                else
-                                        return UnaryOpExpr(token, peek, .expression(prec))
+                                on 'ALL', return AllExpr(token, unaryExpr)
+                                on 'ANY', return AnyExpr(token, unaryExpr)
+                                on 'OLD', return OldExpr(token, unaryExpr)
+                                on 'REF', return RefExpr(token, unaryExpr)
+                                else, return UnaryOpExpr(token, peek, unaryExpr)
                 # TODO: make a branch statement
                 else if peek=='LPAREN'