combined updates (#1)

* fix missing ident

* support old style fallback function

Author: cassc

solidity_parser/parser.py

@@ -181,7 +181,8 @@ def visitFunctionDefinition(self, ctx: SolidityParser.FunctionDefinitionContext)
         elif fd.identifier():
             name = fd.identifier().getText()
         else:
-            name = ctx.getText()
+            name = '' # handle old style fallback function: function(){ ... }
+            isFallback = True
 
         parameters = self.visit(ctx.parameterList())
         returnParameters = self.visit(ctx.returnParameters()) if ctx.returnParameters() else []
@@ -744,9 +745,11 @@ def visitVariableDeclarationList(self, ctx: SolidityParser.VariableDeclarationLi
             if decl == None:
                 return None
 
+            ident = decl.identifier()
+            name = ident and ident.getText() or '_'
             result.append(self._createNode(ctx=ctx,
                                            type='VariableDeclaration',
-                                           name=decl.identifier().getText(),
+                                           name=name,
                                            typeName=self.visit(decl.typeName()),
                                            isStateVar=False,
                                            isIndexed=False,