[PATCH] cooker.py: Ensure we track parser errors and only show bbappend issues on complete parse

[Richard Purdie <richard.purdie@linuxfoundation.org>]

Currently if any parsing failure occurs, there can be a long list of
bbappends that are "dangling" based on the fact that recipes were not
parsed. This change firstly ensures the error counter is incremented
and secondly that the bbappends list is only shown on a completed
parse list.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 361bc88..5d01af3 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -1205,8 +1205,9 @@ class BBCooker:
 
         if not self.parser.parse_next():
             collectlog.debug(1, "parsing complete")
-            self.show_appends_with_no_recipes()
-            self.buildDepgraph()
+            if not self.parser.error:
+                self.show_appends_with_no_recipes()
+                self.buildDepgraph()
             self.state = state.running
             return None
 
@@ -1601,6 +1602,7 @@ class CookerParser(object):
                                             self.skipped, self.masked,
                                             self.virtuals, self.error,
                                             self.total)
+
             bb.event.fire(event, self.cfgdata)
             self.feeder_quit.put(None)
             for process in self.processes:
@@ -1658,20 +1660,25 @@ class CookerParser(object):
             self.shutdown()
             return False
         except ParsingFailure as exc:
+            self.error += 1
             logger.error('Unable to parse %s: %s' %
                      (exc.recipe, bb.exceptions.to_string(exc.realexception)))
             self.shutdown(clean=False)
         except bb.parse.ParseError as exc:
+            self.error += 1
             logger.error(str(exc))
             self.shutdown(clean=False)
         except bb.data_smart.ExpansionError as exc:
+            self.error += 1
             _, value, _ = sys.exc_info()
             logger.error('ExpansionError during parsing %s: %s', value.recipe, str(exc))
             self.shutdown(clean=False)
         except SyntaxError as exc:
+            self.error += 1
             logger.error('Unable to parse %s', exc.recipe)
             self.shutdown(clean=False)
         except Exception as exc:
+            self.error += 1
             etype, value, tb = sys.exc_info()
             logger.error('Unable to parse %s', value.recipe,
                          exc_info=(etype, value, exc.traceback))