From: Gerhard Sittig <redacted>
Date: Sun, 27 May 2018 07:35:25 +0000 (+0200)
Subject: counter: use local variables instead of instance variables
X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=commitdiff_plain;h=821a21418cb64f77f444c440752ac09a8bc97fb6

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 384f978..4b5085b 100644
--- 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)])