Function dart_sys::Dart_DetectNullSafety

pub unsafe extern "C" fn Dart_DetectNullSafety(
    script_uri: *const c_char,
    package_config: *const c_char,
    original_working_directory: *const c_char,
    snapshot_data: *const u8,
    snapshot_instructions: *const u8,
    kernel_buffer: *const u8,
    kernel_buffer_size: isize
) -> bool

Detect the null safety opt-in status.

When running from source, it is based on the opt-in status of script_uri. When running from a kernel buffer, it is based on the mode used when generating kernel_buffer. When running from an appJIT or AOT snapshot, it is based on the mode used when generating snapshot_data.

\param script_uri Uri of the script that contains the source code

\param package_config Uri of the package configuration file (either in format of .packages or .dart_tool/package_config.json) for the null safety detection to resolve package imports against. If this parameter is not passed the package resolution of the parent isolate should be used.

\param original_working_directory current working directory when the VM process was launched, this is used to correctly resolve the path specified for package_config.

\param snapshot_data Buffer containing the snapshot data of the isolate or NULL if no snapshot is provided. If provided, the buffers must remain valid until the isolate shuts down.

\param snapshot_instructions Buffer containing the snapshot instructions of the isolate or NULL if no snapshot is provided. If provided, the buffers must remain valid until the isolate shuts down.

\param kernel_buffer A buffer which contains a kernel/DIL program. Must remain valid until isolate shutdown.

\param kernel_buffer_size The size of kernel_buffer.

\return Returns true if the null safety is opted in by the input being run script_uri, snapshot_data or kernel_buffer.