java.py 文件源码

def find_class_having_main(self, classes):
        for file in classes:
            # run javap(1) with type signatures
            try:
                stdout = subprocess.check_output(
                    [self.extra_binaries['disassembler'].cmd, '-s', str(file)],
                    stderr=subprocess.DEVNULL, env=self.compiler.env)
            except subprocess.SubprocessError:  # noqa
                continue
            # iterate on lines to find p s v main() signature and then
            # its descriptor on the line below; we don't rely on the type
            # from the signature, because it could be String[], String... or
            # some other syntax I'm not even aware of
            lines = iter(stdout.decode().split('\n'))
            for line in lines:
                line = line.lstrip()
                if line.startswith('public static') and 'void main(' in line:
                    if next(lines).lstrip() == PSVMAIN_DESCRIPTOR:
                        return file.stem