Replies: 1 comment 17 replies
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So I refactored to workaround this problem (a couple more FFI calls) but it seems that the generated C code also has lots of duplicate symbols which appears to make it impossible to use multiple modules as per the example. I tried following the information here: https://cjycode.com/flutter_rust_bridge/article/generate_multiple_files.html but I don't think there is anything in there that will help. My use lib_flutter_rust_bridge_codegen::{
config_parse, frb_codegen_multi, get_symbols_if_no_duplicates,
init_logger, RawOpts,
};
/// Path of input Rust code
const RUST_INPUT_API: &str = "src/api.rs";
const RUST_INPUT_NET: &str = "src/network/api.rs";
/// Path of output generated Dart code
const DART_OUTPUT_API: &str = "../lib/ffi/api_generated.dart";
const DART_OUTPUT_NET: &str = "../lib/ffi/net_generated.dart";
/// Path of output Rust code
const RUST_OUTPUT_API: &str = "src/api_generated.rs";
const RUST_OUTPUT_NET: &str = "src/net_generated.rs";
/// Class name to use in dart, corresponding to each Rust block
const CLASS_NAME_API: &str = "SosNativeBindings";
const CLASS_NAME_NET: &str = "SosNetworkBindings";
fn main() {
init_logger("./logs/", true).unwrap();
// Tell Cargo that if the input Rust code changes,
// to rerun this build script.
println!("cargo:rerun-if-changed={RUST_INPUT_API}");
println!("cargo:rerun-if-changed={RUST_INPUT_NET}");
// Options for frb_codegen
let raw_opts = RawOpts {
// Path of input Rust code
rust_input: vec![
RUST_INPUT_API.to_string(),
RUST_INPUT_NET.to_string(),
],
// Path of output generated Dart code
dart_output: vec![
DART_OUTPUT_API.to_string(),
DART_OUTPUT_NET.to_string(),
],
// Path of output Rust code
rust_output: Some(vec![
RUST_OUTPUT_API.to_string(),
RUST_OUTPUT_NET.to_string(),
]),
//dart_decl_output: Some("../lib/def_generated.dart".to_string()),
wasm: false,
// Class name of each Rust block of api
class_name: Some(vec![
CLASS_NAME_API.to_string(),
CLASS_NAME_NET.to_string(),
]),
c_output: Some(vec![
"../macos/Runner/api_generated.h".into(),
"../macos/Runner/net_generated.h".into(),
]),
extra_c_output_path: Some(vec![
"../ios/Runner/".into(),
"../ios/Runner/".into(),
]),
dart_format_line_length: 80,
..Default::default()
};
// get opts from raw opts
let configs = config_parse(raw_opts);
// generation of rust api for ffi (multi-blocks)
let all_symbols = get_symbols_if_no_duplicates(&configs).unwrap();
for config_index in 0..configs.len() {
frb_codegen_multi(&configs, config_index, &all_symbols).unwrap()
}
}And there are many errors compiling with the duplicate symbols, for example: Any help would be really appreciated, thanks 🙏 |
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Well finally so I got the mirroring working this way so far: so first I need to make sure the vanilla definition in #[derive(Debug, Clone)]
#[cfg_attr(
feature = "serde",
derive(::serde::Deserialize, ::serde::Serialize),
serde(transparent)
)]
#[cfg_attr(feature = "fake", derive(::fake::Dummy))]
pub struct Firstname(
#[cfg_attr(
feature = "fake",
dummy(faker = "fake::faker::name::fr_fr::FirstName()")
)]
pub String, // <-- notice here 'pub' is mandatory
);let's say in use flutter_rust_bridge::frb;
pub use my_core::{Firstname, Person}; // 'pub' matters here
#[frb(mirror(Firstname))]
pub struct _Firstname(String); // 'pub' matters here (but not for inner type)
// many mirrors later ...
#[frb(mirror(Person))]
pub struct _Person { // 'pub' here matters
firstname: Firstname, // but not for inner type
// many more fields ...
}Then in pub use my_core::Person; // 'pub' matters here
pub fn get_person() -> anyhow::Result<Person> { todo!() }And I also need to modify codegen command as suggested in the docs : flutter_rust_bridge_codegen \
--rust-input native/src/mirror.rs native/src/api.rs \
--dart-output lib/brigde_generated_mirror.dart lib/bridge_generated.dart \
--extra-c-output-path macos/Runner/ \
--dart-decl-output lib/bridge_definitions.dart \
--rust-output native/src/brigde_generated_mirror.rs native/src/bridge_generated.rs \
--class-name Mirror MyNative \
--wasmThat's not perfect, but at least it's a little bit less painful :) |
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@Roms1383, glad you got it working! My problems IIRC were to do with types that cannot natively be transferred across for the Rust -> Dart bridge (eg: Maybe @fzyzcjy can suggest a better solution for this? Would be great if FRB could support implementations with |
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I am quite busy now, but will try to find a bit of time checking this thread! |
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Looks reasonable, feel free to PR! In addition, it would also be great to completely eliminate mirroring (if possible) and directly extract everything from the external structs. |
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Hi,
My project was getting quite large so I refactored to use multiple APIs and classes starting from the
build.rsin the example. Thanks!However, I need to share some types between the modules (they are called
apiandnet) but if I reference a type in both modules theIntoDartimplementations are declared twice:Is there a strategy I can use to resolve this?
Thanks for any help or advice 🙏
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