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/* 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
//! Functions, types and expressions to handle FFI operations.
//!
//! This module leverages the various traits defined in `uniffi_core::ffi_converter_traits` to provide functionality to the rest of `uniffi_macros`.
//! Keeping this layer separate makes it easier to handle changes to those traits.
//! See `uniffi_core::ffi_converter_traits` for the meaning of these functions.
use proc_macro2::TokenStream;
use quote::{quote, ToTokens};
// Lower type
pub fn lower_type(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::Lower<crate::UniFfiTag>>::FfiType
}
}
// Lower function
pub fn lower(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::Lower<crate::UniFfiTag>>::lower
}
}
// Lift type
pub fn lift_type(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::Lift<crate::UniFfiTag>>::FfiType
}
}
// Lift function
pub fn try_lift(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::Lift<crate::UniFfiTag>>::try_lift
}
}
/// Write function
pub fn write(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::Lower<crate::UniFfiTag>>::write
}
}
/// Read function
pub fn try_read(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::Lift<crate::UniFfiTag>>::try_read
}
}
/// Lower return type
pub fn lower_return_type(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::LowerReturn<crate::UniFfiTag>>::ReturnType
}
}
/// Lower return function
pub fn lower_return(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::LowerReturn<crate::UniFfiTag>>::lower_return
}
}
/// Lower error function
pub fn lower_error(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::LowerError<crate::UniFfiTag>>::lower_error
}
}
/// Lift return type
pub fn lift_return_type(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::LiftReturn<crate::UniFfiTag>>::ReturnType
}
}
/// Lift foreign return function
pub fn lift_foreign_return(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::LiftReturn<crate::UniFfiTag>>::lift_foreign_return
}
}
/// Handle failed lift function
pub fn lower_return_handle_failed_lift(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::LowerReturn<crate::UniFfiTag>>::handle_failed_lift
}
}
/// LiftRef type
pub fn lift_ref_type(ty: impl ToTokens) -> TokenStream {
quote! { <#ty as ::uniffi::LiftRef<crate::UniFfiTag>>::LiftType }
}
/// Lower into rust buffer function
pub fn lower_into_rust_buffer(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::Lower<crate::UniFfiTag>>::lower_into_rust_buffer
}
}
/// Lift from rust buffer function
pub fn try_lift_from_rust_buffer(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::Lift<crate::UniFfiTag>>::try_lift_from_rust_buffer
}
}
/// Expression for the TYPE_ID_META value for a type
pub fn type_id_meta(ty: impl ToTokens) -> TokenStream {
quote! {
<#ty as ::uniffi::TypeId<crate::UniFfiTag>>::TYPE_ID_META
}
}