CMake: pro2cmake.py: Simplify code and add test for line continuation

Simplify code a bit and add a test for line continuation fixup.

Change-Id: If865bc94d7d419c65d3280b5f9613ebc0d3db74a
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

util/cmake/pro2cmake.py

@@ -518,7 +518,7 @@ class QmakeParser:
         pp.ParserElement.setDefaultWhitespaceChars(' \t')
 
         LC = pp.Suppress(pp.Literal('\\\n'))
-        EOL = pp.Suppress(pp.Literal('\n') ^ pp.LineEnd())
+        EOL = pp.Suppress(pp.LineEnd())
         Else = pp.Keyword('else')
         Identifier = pp.Word(pp.alphas + '_', bodyChars=pp.alphanums+'_-./')
         BracedValue = pp.nestedExpr(ignoreExpr=pp.quotedString \

util/cmake/tests/data/lc.pro

@@ -0,0 +1,10 @@
+TEMPLATE=subdirs
+SUBDIRS=\
+   qmacstyle \
+   qstyle \
+   qstyleoption \
+   qstylesheetstyle \
+
+!qtConfig(private_tests): SUBDIRS -= \
+           qstylesheetstyle \
+

util/cmake/tests/test_parsing.py

@@ -300,3 +300,8 @@ def test_realworld_qtconfig():
     assert len(result) == 1
     validate_op('MODULE_AUX_INCLUDES', '=', ['\\$\\$QT_MODULE_INCLUDE_BASE/QtANGLE'], result[0])
 
+
+def test_realworld_lc():
+    result = parse_file(_tests_path + '/data/lc.pro')
+    assert len(result) == 3
+