Files
array_init
bitflags
byteorder
cfg_if
futures_channel
futures_core
futures_executor
futures_io
futures_macro
futures_sink
futures_task
futures_util
async_await
future
lock
sink
stream
task
gio
auto
action.rsaction_group.rsaction_map.rsapp_info.rsapp_info_monitor.rsapp_launch_context.rsapplication.rsapplication_command_line.rsbuffered_input_stream.rsbuffered_output_stream.rsbytes_icon.rscancellable.rscharset_converter.rsconstants.rsconverter.rsconverter_input_stream.rsconverter_output_stream.rscredentials.rsdata_input_stream.rsdata_output_stream.rsdesktop_app_info.rsdrive.rsemblem.rsemblemed_icon.rsenums.rsfile.rsfile_attribute_matcher.rsfile_enumerator.rsfile_icon.rsfile_info.rsfile_input_stream.rsfile_io_stream.rsfile_monitor.rsfile_output_stream.rsfilename_completer.rsfilter_input_stream.rsfilter_output_stream.rsflags.rsfunctions.rsicon.rsinet_address.rsinet_address_mask.rsinet_socket_address.rsinput_stream.rsio_stream.rsloadable_icon.rsmemory_input_stream.rsmemory_output_stream.rsmenu.rsmenu_attribute_iter.rsmenu_item.rsmenu_link_iter.rsmenu_model.rsmod.rsmount.rsmount_operation.rsnetwork_address.rsnetwork_monitor.rsnetwork_service.rsnotification.rsoutput_stream.rspermission.rspollable_input_stream.rspollable_output_stream.rsproperty_action.rsproxy.rsproxy_address.rsproxy_resolver.rsremote_action_group.rsresolver.rsresource.rsseekable.rssettings.rssettings_backend.rssettings_schema.rssettings_schema_key.rssettings_schema_source.rssimple_action.rssimple_action_group.rssimple_permission.rssocket.rssocket_address.rssocket_address_enumerator.rssocket_client.rssocket_connectable.rssocket_connection.rssocket_listener.rssocket_service.rssrv_target.rssubprocess.rssubprocess_launcher.rstcp_connection.rsthemed_icon.rsthreaded_socket_service.rstls_certificate.rstls_client_connection.rstls_connection.rstls_database.rstls_file_database.rstls_interaction.rstls_password.rstls_server_connection.rsunix_input_stream.rsunix_output_stream.rsunix_socket_address.rsvfs.rsvolume.rsvolume_monitor.rszlib_compressor.rszlib_decompressor.rs
subclass
gio_sys
glib
glib_sys
gobject_sys
gstreamer
gstreamer_app
gstreamer_app_sys
gstreamer_audio
gstreamer_audio_sys
gstreamer_base
gstreamer_base_sys
gstreamer_check
gstreamer_check_sys
gstreamer_editing_services
gstreamer_editing_services_sys
gstreamer_gl
gstreamer_gl_sys
gstreamer_net
gstreamer_net_sys
gstreamer_pbutils
gstreamer_pbutils_sys
gstreamer_player
gstreamer_player_sys
gstreamer_rtp
gstreamer_rtp_sys
gstreamer_rtsp
gstreamer_rtsp_server
gstreamer_rtsp_server_sys
gstreamer_rtsp_sys
gstreamer_sdp
gstreamer_sdp_sys
gstreamer_sys
gstreamer_video
gstreamer_video_sys
gstreamer_webrtc
gstreamer_webrtc_sys
lazy_static
libc
muldiv
num_integer
num_rational
num_traits
paste
paste_impl
pin_utils
proc_macro2
proc_macro_hack
proc_macro_nested
quote
serde
serde_bytes
serde_derive
slab
syn
unicode_xid
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use proc_macro::{Delimiter, Group, Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree};
use std::iter::FromIterator;

pub struct Error {
    span: Span,
    msg: String,
}

impl Error {
    pub fn new(span: Span, msg: impl Into<String>) -> Self {
        Error {
            span,
            msg: msg.into(),
        }
    }
}

pub fn compile_error(err: Error) -> TokenStream {
    // compile_error!($msg)
    TokenStream::from_iter(vec![
        TokenTree::Ident(Ident::new("compile_error", err.span)),
        TokenTree::Punct({
            let mut punct = Punct::new('!', Spacing::Alone);
            punct.set_span(err.span);
            punct
        }),
        TokenTree::Group({
            let mut group = Group::new(Delimiter::Brace, {
                TokenStream::from_iter(vec![TokenTree::Literal({
                    let mut string = Literal::string(&err.msg);
                    string.set_span(err.span);
                    string
                })])
            });
            group.set_span(err.span);
            group
        }),
    ])
}