Rename REAMDE to README.md

[nit.git] / src / test_parser.nit

diff --git a/src/test_parser.nit b/src/test_parser.nit
index 193a734..6ad8038 100644 (file)
--- a/src/test_parser.nit
+++ b/src/test_parser.nit
@@ -19,10 +19,12 @@ module test_parser
 
 import parser
 import parser_util
+import astutil
 
+# A basic visitor that prints AST trees to the screen
 class PrintTreeVisitor
        super Visitor
-       private var rank: Int
+       private var rank: Int = 0
        redef fun visit(n)
        do
                if n isa Token then
@@ -34,11 +36,6 @@ class PrintTreeVisitor
                n.visit_all(self)
                rank = rank - 1
        end
-
-       init
-       do
-               rank = 0
-       end
 end
 
 var no_print = false
@@ -46,6 +43,7 @@ var only_lexer = false
 var need_help = false
 var no_file = false
 var interactive = false
+var xml = false
 
 while not args.is_empty and args.first.chars.first == '-' do
        if args.first == "-n" then
@@ -54,6 +52,8 @@ while not args.is_empty and args.first.chars.first == '-' do
                only_lexer = true
        else if args.first == "-p" then
                only_lexer = false
+       else if args.first == "-x" then
+               xml = true
        else if args.first == "-e" then
                no_file = true
        else if args.first == "-i" then
@@ -76,15 +76,16 @@ if (args.is_empty and not interactive) or need_help then
        print("  -n     do not print anything")
        print("  -l     only lexer")
        print("  -p     lexer and parser (default)")
+       print("  -x     instead of a ascii tree, output a XML document")
        print("  -e     instead on files, each argument is a content to parse")
        print("  -i     tree to parse are read interactively")
        print("  -h     print this help")
 else if interactive then
        if only_lexer then
-               print "Error: -l and -i are incompatibles"
+               print "Error: -l and -i are incompatible"
                exit 1
        else if no_file then
-               print "Error: -e and -i are incompatibles"
+               print "Error: -e and -i are incompatible"
                exit 1
        else if not args.is_empty then
                print "Error: -i works without arguments"
@@ -120,7 +121,7 @@ else
                if no_file then
                        source = new SourceFile.from_string("", a)
                else
-                       var f = new IFStream.open(a)
+                       var f = new FileReader.open(a)
                        source = new SourceFile(a, f)
                        f.close
                end
@@ -143,7 +144,10 @@ else
                                return
                        end
 
-                       if not no_print then
+                       if xml then
+                               tree.parentize_tokens
+                               tree.to_xml.write_to(stdout)
+                       else if not no_print then
                                (new PrintTreeVisitor).enter_visit(tree)
                        end
                end