Separate output into its own module

tests/fuzz.py

@@ -1,6 +1,8 @@
 import os, sys
 from pythonfuzz.main import PythonFuzz
 
+from blueprintcompiler.outputs.xml import XmlOutput
+
 sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
 
 from blueprintcompiler import tokenizer, parser, decompiler, gir
@@ -17,8 +19,9 @@ def fuzz(buf):
         tokens = tokenizer.tokenize(blueprint)
         ast, errors, warnings = parser.parse(tokens)
 
+        xml = XmlOutput()
         if errors is None and len(ast.errors) == 0:
-            actual = ast.generate()
+            xml.emit(ast)
     except CompilerBugError as e:
         raise e
     except PrintableError:

tests/samples/signal.ui

@@ -5,7 +5,7 @@
     <signal name="activate" handler="click" object="button"/>
   </object>
   <object class="GtkButton" id="button">
-    <signal name="clicked" handler="on_button_clicked" swapped="true"/>
+    <signal name="clicked" handler="on_button_clicked" swapped="True"/>
     <signal name="notify::visible" handler="on_button_notify_visible"/>
   </object>
 </interface>

tests/test_samples.py

@@ -28,6 +28,7 @@ from blueprintcompiler.completions import complete
 from blueprintcompiler.errors import PrintableError, MultipleErrors, CompileError
 from blueprintcompiler.tokenizer import Token, TokenType, tokenize
 from blueprintcompiler import utils
+from blueprintcompiler.outputs.xml import XmlOutput
 
 
 class TestSamples(unittest.TestCase):
@@ -56,7 +57,8 @@ class TestSamples(unittest.TestCase):
             if len(warnings):
                 raise MultipleErrors(warnings)
 
-            actual = ast.generate()
+            xml = XmlOutput()
+            actual = xml.emit(ast)
             if actual.strip() != expected.strip(): # pragma: no cover
                 diff = difflib.unified_diff(expected.splitlines(), actual.splitlines())
                 print("\n".join(diff))