Checksum / error reporting improvements

index 27fb7d9..2c02cde 100644
@@ -102,7 +102,10 @@ class ExpansionError(Exception):
         self.expression = expression
         self.variablename = varname
         self.exception = exception
-        self.msg = "Failure expanding variable %s, expression was %s which triggered exception %s: %s" % (varname, expression, type(exception).__name__, exception)
+        if varname:
+            self.msg = "Failure expanding variable %s, expression was %s which triggered exception %s: %s" % (varname, expression, type(exception).__name__, exception)
+        else:
+            self.msg = "Failure expanding expression %s which triggered exception %s: %s" % (expression, type(exception).__name__, exception)
         Exception.__init__(self, self.msg)
         self.args = (varname, expression, exception)
     def __str__(self):

index d1de757..b30945c 100644
@@ -1646,6 +1646,8 @@ class CookerParser(object):
                     yield result
 
     def parse_next(self):
+        result = []
+        parsed = None
         try:
             parsed, result = self.results.next()
         except StopIteration:

index b30945c..928b600 100644
@@ -1657,9 +1657,13 @@ class CookerParser(object):
             logger.error('Unable to parse %s: %s' %
                      (exc.recipe, bb.exceptions.to_string(exc.realexception)))
             self.shutdown(clean=False)
-        except (bb.parse.ParseError, bb.data_smart.ExpansionError) as exc:
+        except bb.parse.ParseError as exc:
             logger.error(str(exc))
             self.shutdown(clean=False)
+        except bb.data_smart.ExpansionError as exc:
+            _, value, _ = sys.exc_info()
+            logger.error('ExpansionError during parsing %s: %s', value.recipe, str(exc))
+            self.shutdown(clean=False)
         except SyntaxError as exc:
             logger.error('Unable to parse %s', exc.recipe)
             self.shutdown(clean=False)

index 6ae69cd..83050e4 100644
@@ -112,6 +112,9 @@ class NetworkAccess(BBFetchException):
          BBFetchException.__init__(self, msg)
          self.args = (url, cmd)
 
+class NonLocalMethod(Exception):
+    def __init__(self):
+        Exception.__init__(self)
 
 def decodeurl(url):
     """Decodes an URL into the tokens (scheme, network location, path,

@@ -565,17 +568,17 @@ def srcrev_internal_helper(ud, d, name):
 def get_checksum_file_list(d):
     """ Get a list of files checksum in SRC_URI
 
-    Returns the all resolved local path of all local file entries in
+    Returns the resolved local paths of all local file entries in
     SRC_URI as a space-separated string
     """
-    fetch = Fetch([], d)
+    fetch = Fetch([], d, cache = False, localonly = True)
 
     dl_dir = d.getVar('DL_DIR', True)
     filelist = []
     for u in fetch.urls:
         ud = fetch.ud[u]
 
-        if isinstance(ud.method, local.Local):
+        if ud and isinstance(ud.method, local.Local):
             ud.setup_localpath(d)
             f = ud.localpath
             if f.startswith(dl_dir):

@@ -639,7 +642,7 @@ class FetchData(object):
     """
     A class which represents the fetcher state for a given URI.
     """
-    def __init__(self, url, d):
+    def __init__(self, url, d, localonly = False):
         # localpath is the location of a downloaded result. If not set, the file is local.
         self.donestamp = None
         self.localfile = ""

@@ -686,6 +689,9 @@ class FetchData(object):
         if not self.method:
             raise NoMethodError(url)
 
+        if localonly and not isinstance(self.method, local.Local):
+            raise NonLocalMethod()
+
         if hasattr(self.method, "urldata_init"):
             self.method.urldata_init(self, d)
 

@@ -1009,7 +1015,10 @@ class FetchMethod(object):
         return "%s-%s" % (key, d.getVar("PN", True) or "")
 
 class Fetch(object):
-    def __init__(self, urls, d, cache = True):
+    def __init__(self, urls, d, cache = True, localonly = False):
+        if localonly and cache:
+            raise Exception("bb.fetch2.Fetch.__init__: cannot set cache and localonly at same time")
+
         if len(urls) == 0:
             urls = d.getVar("SRC_URI", True).split()
         self.urls = urls

@@ -1022,7 +1031,12 @@ class Fetch(object):
 
         for url in urls:
             if url not in self.ud:
-                self.ud[url] = FetchData(url, d)
+                try:
+                    self.ud[url] = FetchData(url, d, localonly)
+                except NonLocalMethod:
+                    if localonly:
+                        self.ud[url] = None
+                        pass
 
         if cache:
             urldata_cache[fn] = self.ud

index c0636e1..e3ffefe 100644
@@ -279,7 +279,12 @@ def build_dependencies(key, keys, shelldeps, vardepvals, d):
     deps = set()
     vardeps = d.getVarFlag(key, "vardeps", True)
     try:
-        value = d.getVar(key, False)
+        if key[-1] == ']':
+            vf = key[:-1].split('[')
+            value = d.getVarFlag(vf[0], vf[1], False)
+        else:
+            value = d.getVar(key, False)
+
         if key in vardepvals:
            value =  d.getVarFlag(key, "vardepvalue", True)
         elif d.getVarFlag(key, "func"):

@@ -301,6 +306,19 @@ def build_dependencies(key, keys, shelldeps, vardepvals, d):
             parser = d.expandWithRefs(value, key)
             deps |= parser.references
             deps = deps | (keys & parser.execs)
+
+        # Add varflags, assuming an exclusion list is set
+        varflagsexcl = d.getVar('BB_SIGNATURE_EXCLUDE_FLAGS', True)
+        if varflagsexcl:
+            varfdeps = []
+            varflags = d.getVarFlags(key)
+            if varflags:
+                for f in varflags:
+                    if f not in varflagsexcl:
+                        varfdeps.append('%s[%s]' % (key, f))
+            if varfdeps:
+                deps |= set(varfdeps)
+
         deps |= set((vardeps or "").split())
         deps -= set((d.getVarFlag(key, "vardepsexclude", True) or "").split())
     except:

index daf5677..c4b7c39 100644
@@ -108,6 +108,10 @@ class SignatureGeneratorBasic(SignatureGenerator):
                 data = data + dep
                 if dep in lookupcache:
                     var = lookupcache[dep]
+                elif dep[-1] == ']':
+                    vf = dep[:-1].split('[')
+                    var = d.getVarFlag(vf[0], vf[1], False)
+                    lookupcache[dep] = var
                 else:
                     var = d.getVar(dep, False)
                     lookupcache[dep] = var