diff options
| -rwxr-xr-x | src/qmake2cmake/qmake_parser.py | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/qmake2cmake/qmake_parser.py b/src/qmake2cmake/qmake_parser.py index 5f4e938..e3e831f 100755 --- a/src/qmake2cmake/qmake_parser.py +++ b/src/qmake2cmake/qmake_parser.py @@ -419,11 +419,23 @@ class QmakeParser: return result, contents +parser_singleton = None + + +# Return a single parser instance for every parsing operation, because +# instantiating a parser is expensive. +def get_qmake_parser(debug: bool = False) -> QmakeParser: + global parser_singleton + if not parser_singleton: + parser_singleton = QmakeParser(debug=debug) + return parser_singleton + + def parseProFile(file: str, *, debug=False) -> Tuple[pp.ParseResults, str]: - parser = QmakeParser(debug=debug) + parser = get_qmake_parser(debug=debug) return parser.parseFile(file) def parseProFileContents(contents: str, *, debug=False) -> Tuple[pp.ParseResults, str]: - parser = QmakeParser(debug=debug) + parser = get_qmake_parser(debug=debug) return parser.parseFileContents(contents) |