parser: fix test_parser

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/src/parser/test_parser.nit b/src/parser/test_parser.nit
index 9a67189..4878291 100644 (file)
--- a/src/parser/test_parser.nit
+++ b/src/parser/test_parser.nit
@@ -22,9 +22,10 @@ import parser
 class PrintTreeVisitor
 special Visitor
        var _rank: Int
-       fun visit(n: ANode)
+       redef fun visit(n: nullable ANode)
        do
-               printn("  " * _rank, n.to_s, "\n")
+               if n == null then return
+               printn("  " * _rank, n.to_s, " ... ", n.location, "\n")
                _rank = _rank + 1
                n.visit_all(self)
                _rank = _rank - 1
@@ -41,13 +42,13 @@ var only_lexer = false
 var need_help = false
 
 while not args.is_empty and args.first.first == '-' do
-       if args.first = "-n" then
+       if args.first == "-n" then
                no_print = true
-       else if args.first = "-l" then
+       else if args.first == "-l" then
                only_lexer = true
-       else if args.first = "-p" then
+       else if args.first == "-p" then
                only_lexer = false 
-       else if args.first = "-h" or args.first = "-?" then
+       else if args.first == "-h" or args.first == "-?" then
                need_help = true
        else
                stderr.write("Unknown option {args.first}.\n")
@@ -72,7 +73,7 @@ else
                        var token = lexer.next
                        while not token isa EOF do
                                if not no_print then
-                                       print("Read token at [{token.line},{token.pos}] text='{token.text}'")
+                                       print("Read token at {token.location} text='{token.text}'")
                                end
                                token = lexer.next
                        end
@@ -83,7 +84,7 @@ else
                        f.close
 
                        if not no_print then
-                               (new PrintTreeVisitor).visit(tree)
+                               (new PrintTreeVisitor).enter_visit(tree)
                        end
                end
        end