counter: use local variables instead of instance variables

Since values get accessed within the .decode() method exclusively, we need
not store data in instance variables of the decoder object. Use another
variable for the "reset edge" option as well for consistency.

diff --git a/decoders/counter/pd.py b/decoders/counter/pd.py
index 384f978f536b5af2ed3ee10eeb8a8bdc47b45f26..4b5085bf772bd666a9859e7488f499faaf86ccf4 100644 (file)
--- a/decoders/counter/pd.py
+++ b/decoders/counter/pd.py
@@ -74,31 +74,32 @@ class Decoder(srd.Decoder):
     def decode(self):
         opt_edge_map = {'rising': 'r', 'falling': 'f', 'any': 'e'}
 
-        self.edge = self.options['data_edge']
-        self.divider = self.options['divider']
-        if self.divider < 0:
-            self.divider = 0
+        data_edge = self.options['data_edge']
+        divider = self.options['divider']
+        if divider < 0:
+            divider = 0
+        reset_edge = self.options['reset_edge']
 
-        condition = [{PIN_DATA: opt_edge_map[self.edge]}]
-        self.have_reset = self.has_channel(PIN_RESET)
-        if self.have_reset:
+        condition = [{PIN_DATA: opt_edge_map[data_edge]}]
+        have_reset = self.has_channel(PIN_RESET)
+        if have_reset:
             cond_reset = len(condition)
-            condition.append({PIN_RESET: opt_edge_map[self.options['reset_edge']]})
+            condition.append({PIN_RESET: opt_edge_map[reset_edge]})
 
-        self.edge_count = 0
-        self.word_count = 0
+        edge_count = 0
+        word_count = 0
         while True:
             self.wait(condition)
 
-            if self.have_reset and self.matched[cond_reset]:
-                self.edge_count = 0
-                self.word_count = 0
+            if have_reset and self.matched[cond_reset]:
+                edge_count = 0
+                word_count = 0
                 self.putc(ROW_RESET, ['Word reset', 'Reset', 'Rst', 'R'])
                 continue
 
-            self.edge_count += 1
-            self.putc(ROW_EDGE, [str(self.edge_count)])
+            edge_count += 1
+            self.putc(ROW_EDGE, [str(edge_count)])
 
-            if self.divider > 0 and (self.edge_count % self.divider) == 0:
-                self.word_count += 1
-                self.putc(ROW_WORD, [str(self.word_count)])
+            if divider and (edge_count % divider) == 0:
+                word_count += 1
+                self.putc(ROW_WORD, [str(word_count)])