Bug 1799982 - Remove uses of inline flags from XPIDL regexps. r=xpcom-reviewers,kmag

Apparently the use of these is being turned into an error in Python 3.11.
Fortunately, our uses appears to be rather trivial.

For t_multilinecomment and t_LCDATA, I dropped the (?s) flag and just
replaced the one use of . with (\n|.). (?s) means DOTALL, which means
that dot includes any character, including a newline. Otherwise it means
dot includes any character except a newline.

I took the new t_singlelinecomment from IPDL's parser.py, so I assume
it is reasonable enough. t_multilinecomment is also now the same as
in IPDL.

Differential Revision: https://phabricator.services.mozilla.com/D161738

Gbp-Pq: Topic fixes
Gbp-Pq: Name Bug-1799982-Remove-uses-of-inline-flags-from-XPIDL-r.patch

diff --git a/xpcom/idl-parser/xpidl/xpidl.py b/xpcom/idl-parser/xpidl/xpidl.py
index 758a44ce56044ef0a4cba49dde2a1a85ddbc78ef..6f514f9237a93625fb43e6a93e56b3dc575ead13 100755 (executable)
--- a/xpcom/idl-parser/xpidl/xpidl.py
+++ b/xpcom/idl-parser/xpidl/xpidl.py
@@ -1572,13 +1572,13 @@ class IDLParser(object):
     t_ignore = " \t"
 
     def t_multilinecomment(self, t):
-        r"/\*(?s).*?\*/"
+        r"/\*(\n|.)*?\*/"
         t.lexer.lineno += t.value.count("\n")
         if t.value.startswith("/**"):
             self._doccomments.append(t.value)
 
     def t_singlelinecomment(self, t):
-        r"(?m)//.*?$"
+        r"//[^\n]*"
 
     def t_IID(self, t):
         return t
@@ -1591,7 +1591,7 @@ class IDLParser(object):
         return t
 
     def t_LCDATA(self, t):
-        r"(?s)%\{[ ]*C\+\+[ ]*\n(?P<cdata>.*?\n?)%\}[ ]*(C\+\+)?"
+        r"%\{[ ]*C\+\+[ ]*\n(?P<cdata>(\n|.)*?\n?)%\}[ ]*(C\+\+)?"
         t.type = "CDATA"
         t.value = t.lexer.lexmatch.group("cdata")
         t.lexer.lineno += t.value.count("\n")