Enhancement - Filters

- Filter implemented.
- Unit tests started, need more as Att::match matures.

src/Att.cpp

@@ -140,7 +140,7 @@ bool Att::parse (Nibbler& n)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-bool Att::validMod (const std::string& mod)
+bool Att::validMod (const std::string& mod) const
 {
   if (mod == "before"     || mod == "after"    ||   // i18n: TODO
       mod == "not"        ||                        // i18n: TODO
@@ -159,7 +159,7 @@ bool Att::validMod (const std::string& mod)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-bool Att::evalMod (Att& other)
+bool Att::match (const Att& other) const
 {
   // No modifier means automatic pass.
 /*
@@ -196,12 +196,6 @@ bool Att::evalMod (Att& other)
   return false;
 }
 
-////////////////////////////////////////////////////////////////////////////////
-bool Att::match (const Att& other)
-{
-  return false;
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // name : " value "
 std::string Att::composeF4 () const
@@ -230,7 +224,7 @@ void Att::addMod (const std::string& mod)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-void Att::mods (std::vector <std::string>& all)
+void Att::mods (std::vector <std::string>& all) const
 {
   all = mMods;
 }

src/Att.h

@@ -42,13 +42,13 @@ public:
   ~Att ();                                      // Destructor
 
   bool parse (Nibbler&);
-  bool validMod (const std::string&);
-  bool evalMod (Att&);
-  bool match (const Att&);
+  bool validMod (const std::string&) const;
+  bool match (const Att&) const;
+
   std::string composeF4 () const;
 
   void addMod (const std::string&);
-  void mods (std::vector <std::string>&);
+  void mods (std::vector <std::string>&) const;
 
   std::string name () const;
   void name (const std::string&);

src/Filter.cpp

@@ -26,45 +26,21 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 #include "Filter.h"
+#include "util.h"
 
 ////////////////////////////////////////////////////////////////////////////////
-Filter::Filter ()
+// For every Att in the filter, lookup the equivalent in Record, and perform a
+// match.  Aren't filters easy now that everything is an attribute?
+bool Filter::pass (const Record& record) const
 {
-}
+  Record::const_iterator r;
 
-////////////////////////////////////////////////////////////////////////////////
-Filter::Filter (const Filter& other)
-{
-  throw std::string ("unimplemented Filter::Filter");
-  *this = other;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-Filter& Filter::operator= (const Filter& other)
-{
-  throw std::string ("unimplemented Filter::operator=");
-  if (this != &other)
-  {
-    *this = other;
-  }
-
-  return *this;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-Filter::~Filter ()
-{
-}
-
-////////////////////////////////////////////////////////////////////////////////
-bool Filter::pass (Record& record)
-{
-  throw std::string ("unimplemented Filter::pass");
-/*
+  // If record doesn't have the attribute, fail.  If it does have the attribute
+  // but it doesn't match, fail.
   foreach (att, (*this))
-    if (! att->match (record))
-      return false;
-*/
+    if ((r = record.find (att->name ())) == record.end () ||
+        ! att->match (r->second))
+        return false;
 
   return true;
 }

src/Filter.h

@@ -34,12 +34,7 @@
 class Filter : public std::vector <Att>
 {
 public:
-  Filter ();                         // Default constructor
-  Filter (const Filter&);            // Copy constructor
-  Filter& operator= (const Filter&); // Assignment operator
-  ~Filter ();                        // Destructor
-
-  bool pass (Record&);
+  bool pass (const Record&) const;
 };
 
 #endif

src/tests/.gitignore

@@ -13,3 +13,4 @@ record.t
 stringtable.t
 nibbler.t
 subst.t
+filt.t

src/tests/Makefile

@@ -1,5 +1,5 @@
 PROJECT = t.t t2.t tdb.t date.t duration.t t.benchmark.t text.t autocomplete.t \
-          parse.t seq.t att.t stringtable.t record.t nibbler.t subst.t
+          parse.t seq.t att.t stringtable.t record.t nibbler.t subst.t filt.t
 CFLAGS  = -I. -I.. -Wall -pedantic -ggdb3 -fno-rtti
 LFLAGS  = -L/usr/local/lib
 OBJECTS = ../TDB.o ../TDB2.o ../T.o ../T2.o ../parse.o ../text.o ../Date.o     \
@@ -66,3 +66,6 @@ subst.t: subst.t.o $(OBJECTS) test.o
 nibbler.t: nibbler.t.o $(OBJECTS) test.o
 	g++ nibbler.t.o $(OBJECTS) test.o $(LFLAGS) -o nibbler.t
 
+filt.t: filt.t.o $(OBJECTS) test.o
+	g++ filt.t.o $(OBJECTS) test.o $(LFLAGS) -o filt.t
+

src/tests/filt.t.cpp

@@ -0,0 +1,72 @@
+////////////////////////////////////////////////////////////////////////////////
+// task - a command line task list manager.
+//
+// Copyright 2006 - 2009, Paul Beckingham.
+// All rights reserved.
+//
+// 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 2 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, write to the
+//
+//     Free Software Foundation, Inc.,
+//     51 Franklin Street, Fifth Floor,
+//     Boston, MA
+//     02110-1301
+//     USA
+//
+////////////////////////////////////////////////////////////////////////////////
+#include "task.h"
+#include "test.h"
+#include "Filter.h"
+#include "T2.h"
+
+Context context;
+
+////////////////////////////////////////////////////////////////////////////////
+int main (int argc, char** argv)
+{
+  UnitTest test (6);
+
+  // Create a filter consisting of two Att criteria.
+  Filter f;
+  f.push_back (Att ("name1", "value1"));
+  f.push_back (Att ("name2", "value2"));
+  test.is (f.size (), (size_t)2, "Filter created");
+
+  // Create a T2 to match against.
+  T2 yes;
+  yes.set ("name1", "value1");
+  yes.set ("name2", "value2");
+  test.ok (f.pass (yes), "full match");
+
+  yes.set ("name3", "value3");
+  test.ok (f.pass (yes), "over match");
+
+  // Negative tests.
+  T2 no0;
+  test.notok (f.pass (no0), "no match against default T2");
+
+  T2 no1;
+  no1.set ("name3", "value3");
+  test.notok (f.pass (no0), "no match against mismatch T2");
+
+  T2 partial;
+  partial.set ("name1", "value1");
+  test.notok (f.pass (no0), "no match against partial T2");
+
+  // TODO Modifiers.
+
+  return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+