Allow explicit resolvers to be passed to parsers.

rdflib/parser.py

@@ -37,10 +37,16 @@
 
 
 class Parser(object):
-    __slots__ = ()
+    __slots__ = ("_resolver",)
 
-    def __init__(self):
-        pass
+    def __init__(self, *, resolver=None):
+        self._resolver = resolver
+
+    @property
+    def resolver(self):
+        from .resolver import get_default_resolver
+
+        return self._resolver or get_default_resolver()
 
     def parse(self, source, sink):
         pass

rdflib/plugins/parsers/jsonld.py

@@ -84,9 +84,6 @@
 
 
 class JsonLDParser(Parser):
-    def __init__(self):
-        super(JsonLDParser, self).__init__()
-
     def parse(self, source, sink, **kwargs):
         # TODO: docstring w. args and return value
         encoding = kwargs.get("encoding") or "utf-8"

rdflib/plugins/parsers/notation3.py

@@ -1899,9 +1899,6 @@ class TurtleParser(Parser):
     See http://www.w3.org/TR/turtle/
     """
 
-    def __init__(self):
-        pass
-
     def parse(self, source, graph, encoding="utf-8", turtle=True):
 
         if encoding not in [None, "utf-8"]:
@@ -1933,9 +1930,6 @@ class N3Parser(TurtleParser):
 
     """
 
-    def __init__(self):
-        pass
-
     def parse(self, source, graph, encoding="utf-8"):
         # we're currently being handed a Graph, not a ConjunctiveGraph
         # context-aware is this implied by formula_aware

rdflib/plugins/parsers/rdfxml.py

@@ -593,9 +593,6 @@ def create_parser(target, store):
 
 
 class RDFXMLParser(Parser):
-    def __init__(self):
-        pass
-
     def parse(self, source, sink, **args):
         self._parser = create_parser(source, sink)
         content_handler = self._parser.getContentHandler()

rdflib/plugins/parsers/trig.py

@@ -125,9 +125,6 @@ class TrigParser(Parser):
 
     """
 
-    def __init__(self):
-        pass
-
     def parse(self, source, graph, encoding="utf-8"):
 
         if encoding not in [None, "utf-8"]:

rdflib/plugins/parsers/trix.py

@@ -262,9 +262,6 @@ def create_parser(store):
 class TriXParser(Parser):
     """A parser for TriX. See http://sw.nokia.com/trix/"""
 
-    def __init__(self):
-        pass
-
     def parse(self, source, sink, **args):
         assert (
             sink.store.context_aware