From 23908388949859b11b8c8bcea581ffddea00d659 Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Sun, 20 Apr 2014 10:09:30 -0400
Subject: [PATCH] A3t

- Implemented ::findFilter to identify nodes that comprise a filter.
---
 src/A3t.cpp | 37 +++++++++++++++++++++++++++++++++++++
 src/A3t.h   |  1 +
 2 files changed, 38 insertions(+)

diff --git a/src/A3t.cpp b/src/A3t.cpp
index 7331a3825..646ee0ed3 100644
--- a/src/A3t.cpp
+++ b/src/A3t.cpp
@@ -134,6 +134,7 @@ Tree* A3t::parse ()
   findAttribute ();
   findAttributeModifier ();
   findOperator ();
+  findFilter ();
 
   validate ();
 
@@ -912,6 +913,42 @@ void A3t::findOperator ()
   }
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// Anything before CMD, but not BINARY, RC or CONFIG --> FILTER
+// Anything after READCMD, but not BINARY, RC or CONFIG --> FILTER
+void A3t::findFilter ()
+{
+  bool before_cmd = true;
+  bool after_readcmd = false;
+  std::vector <Tree*>::iterator i;
+  for (i = _tree->_branches.begin (); i != _tree->_branches.end (); ++i)
+  {
+    // Parser override operator.
+    if ((*i)->attribute ("raw") == "--")
+      break;
+
+    if ((*i)->hasTag ("CMD"))
+      before_cmd = false;
+
+    if ((*i)->hasTag ("READCMD"))
+      after_readcmd = true;
+
+    if (before_cmd &&
+        ! (*i)->hasTag ("CMD") &&
+        ! (*i)->hasTag ("BINARY") &&
+        ! (*i)->hasTag ("RC") &&
+        ! (*i)->hasTag ("CONFIG"))
+      (*i)->tag ("FILTER");
+
+    if (after_readcmd &&
+        ! (*i)->hasTag ("CMD") &&
+        ! (*i)->hasTag ("BINARY") &&
+        ! (*i)->hasTag ("RC") &&
+        ! (*i)->hasTag ("CONFIG"))
+      (*i)->tag ("FILTER");
+  }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Validate the parse tree.
 void A3t::validate ()
diff --git a/src/A3t.h b/src/A3t.h
index d542e4441..d9266c57f 100644
--- a/src/A3t.h
+++ b/src/A3t.h
@@ -64,6 +64,7 @@ private:
   void findAttribute ();
   void findAttributeModifier ();
   void findOperator ();
+  void findFilter ();
   void validate ();
 
   // TODO Resolve aliases