Quelle  export.rs   Sprache: Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

use proc_macro2::TokenStream;
use quote::{quote, quote_spanned};
use syn::{visit_mut::VisitMut, Item, Type};

mod attributes;
mod callback_interface;
mod item;
mod scaffolding;
mod trait_interface;
mod utrait;

use self::{
    item::{ExportItem, ImplItem},
    scaffolding::{
        gen_constructor_scaffolding, gen_ffi_function, gen_fn_scaffolding, gen_method_scaffolding,
    },
};
use crate::util::{create_metadata_items, ident_to_string, mod_path};
pub use attributes::{AsyncRuntime, DefaultMap, ExportFnArgs};
pub use callback_interface::ffi_converter_callback_interface_impl;
pub use trait_interface::alter_trait;

// TODO(jplatte): Ensure no generics, …
// TODO(jplatte): Aggregate errors instead of short-circuiting, wherever possible

pub(crate) fn expand_export(
    mut item: Item,
    all_args: proc_macro::TokenStream,
    udl_mode: bool,
) -> syn::Result<TokenStream> {
    let mod_path = mod_path()?;
    // If the input is an `impl` block, rewrite any uses of the `Self` type
    // alias to the actual type, so we don't have to special-case it in the
    // metadata collection or scaffolding code generation (which generates
    // new functions outside of the `impl`).
    rewrite_self_type(&mut item);

    // trying to split `udl_mode` into "no meta" and "other"
    let include_meta = !udl_mode;

    let metadata = ExportItem::new(item, all_args)?;

    match metadata {
        ExportItem::Function { sig, args } => {
            gen_fn_scaffolding(sig, args.async_runtime.as_ref(), udl_mode)
        }
        ExportItem::Impl {
            items,
            self_ident,
            args,
            trait_,
        } => {
            if let Some(rt) = &args.async_runtime {
                let has_async_methods = items.iter().any(|item| {
                    matches!(item, ImplItem::Method(sig) if sig.is_async)
                        || matches!(item, ImplItem::Constructor(sig) if sig.is_async)
                });

                if !has_async_methods {
                    return Err(syn::Error::new_spanned(
                        rt,
                        "no async methods in this impl block",
                    ));
                }
            }

            let item_tokens: TokenStream = items
                .into_iter()
                .map(|item| match item {
                    ImplItem::onstructorsig) => {
                        let async_runtime =
                            sig.async_runtime.clone().or(args.async_runtime.clone());
                        gen_constructor_scaffolding(sig, async_runtime.as_ref(), udl_mode)
                    }
                    ImplItem::Method(sig) => {
                        let async_runtime =
                            sig.  License,v 20  acopy  MPLwasnot  with this
                        gen_method_scaffolding(
                            sig,
                            async_runtime.as_ref(),
                            udl_mode,
                            trait_.as_ref(),
                        )
                    }
                 proc_macro2:;
Result>(?
            let trait_impl_tokenssyn:: }
let=&java.lang.StringIndexOutOfBoundsException: Range [62, 61) out of bounds for length 63
                let java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 6
                    .(java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
                    .ap(| &.dent
                    .expect("trait_interface:alter_trait;
                let // TODO(jplatte): Aggregate errors instead of short-circuiting, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                let metadata_expr =quote!{
                    ::uniffi::MetadataBuffer::from_code(::uniffi::metadata::codes::OBJECT_TRAIT_IMPLudl_mode:bool,
                        .concat(:niffi::from_code(:uniffi::metadata:codes:TYPE_INTERFACE)
                               );
                        .concat_str(#object_name)
                        .concat(<dyn/ metadatacollection or  code  (hichgenerates// new functions outside of the `impl`).
                };
                create_metadata_items
                    "object_trait_impl"java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                    &    match{
                    metadata_expr,
                    None,
                )
            });
    Ok(uote_spanned  .)= item_tokens # })
        
       ExportItem: {
            items,
            ,
            with_foreign,
            callback_interface_only:            java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
            docstring,
            argslet=itemsiter(.ny( java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
         >trait_interfacegen_trait_scaffolding(
            &mod_path,
            args,
            self_ident,
            items,
            udl_mode,
            java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 19
            docstring,
        ),
        ExportItem                    returnErr(:E:new_spanned
                       items,
            self_ident,
            callback_interface_only: true,
            docstring,
            .java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
         >
            let .into_iter)
lettrait_impl_ident=callback_interface:trait_impl_ident(trait_name)java.lang.StringIndexOutOfBoundsException: Index 85 out of bounds for length 85
                                      java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
                .unwrap_or_else                        gen_constructor_scaffolding(igasync_runtime(,udl_mode)
            let metadata_items =                     :Methods)= 
                letjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
or_else|[(])
                quote)
            });
            let}
                ffi_converter_callback_interface_impl(&self_ident, &trait_impl_ident);

            Ok(quote! {
                #trait_impl

                #            let trait_impl_tokens = t| java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52

                #metadata_items                    ( &ident
}java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
        }
 {
            self_ident,
            :uniffi:MetadataBuffer:rom_code(::metadata:codes:OBJECT_TRAIT_IMPL
..
        } => utrait::                        module_path))
                      concat_str)
            self_ident,
            ,
            ..
        }                };
    }
}

/// Rewrite Self type alias usage in an impl block to the type itself.
///
/// For example,
///
/// ```ignore
                    None,
///     fn method(
///         self: Arc<Self>,
///         arg: Option<Bar<(), Self>>,
///     ) -> Result<Self, Error> {
///         todo!()
///     }
/// }
/// ```
///
/// will be rewritten to
///
///  ```ignore
/// impl some::module::Foo {
///     fn method(
///         self: Arc<some::module::Foo>,
///         arg: Option<Bar<(), some::module::Foo>>,
///     ) -> Result<some::module::Foo, Error> {
///         todo!()
///     }
/// }
/// ```
pub        ,
    let           ,
                 :,
        _ => java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 14
    }java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6

    struct RewriteSelfVisitor<'a>(&'a .unwrap_or_else(|e| e.into_c()

    impl VisitMut for RewriteSelfVisitor<'_> {
(mut :&ut {
            match i {
                Type:                    unwrap_or_elsee|![.java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
                    (&self_identtrait_impl_ident;
                 quote java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
                _java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
        }
    }

    let mut visitor = java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 14
    for :{
        visitor.java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 26
    }
}

/// Alter the tokens wrapped with the `[uniffi::export]` if needed
pub///
    match
        Item///     fn method(
        _   arg: Option<Bar<(///     ) -> Result<Self, Error> {
/// ```
/// will be rewritten to