contrib/pep8analysis/src/ast/ast_base.nit

   1 import backbone
   2 import parser
   3
   4 redef class AnalysisManager
   5         fun build_ast( filename : String ) : nullable AListing
   6         do
   7                 var file = new IFStream.open( filename )
   8
   9                 var source = new SourceFile(filename, file)
  10                 var lexer = new Lexer(source)
  11                 var parser = new Parser(lexer)
  12                 var node_tree = parser.parse
  13
  14                 var ast = node_tree.n_base
  15                 if ast == null then
  16                         var err = node_tree.n_eof
  17                         assert err isa AError
  18                         print "error at {err.location}: {err.message}"
  19                         return null
  20                 end
  21
  22                 return ast
  23         end
  24 end