validators.py 文件源码

def validate_emscripten_memory_size(memory_size):
    if isinstance(memory_size, six.integer_types):
        if memory_size <= 0:
            raise ValueError("Invalid memory size value {size}: a positive number expected".format(size=memory_size))

        return ["-s", "TOTAL_MEMORY=" + str(memory_size)]
    elif isinstance(memory_size, str):
        import re
        match = re.match(r"^(\d+)([MK]?)$", memory_size)
        if not match:
            raise ValueError("Invalid memory size value {size}: "
                             "an integer expected with an optional M(ega) or K(ilo) suffix "
                             "(e.g. 256M)".format(size=memory_size))

        number = int(match.group(1))
        suffix = match.group(2)
        memory_size = {"": number, "K": number * 1024, "M": number * 1048576}[suffix]
        return validate_emscripten_memory_size(memory_size)
    elif memory_size is all:
        return ["-s", "ALLOW_MEMORY_GROWTH=1"]
    else:
        raise TypeError("Invalid memory size type: an integer, string, or all expected")