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//! Derive crate for ATAT //! //! This crate provides derive macros for automatically deriving //! [`atat::AtatCmd`], [`atat::AtatResp`], [`atat::AtatUrc`], [`atat::AtatEnum`] //! and [`atat::AtatLen`] //! //! [`atat::AtatCmd`]: ../atat/trait.AtatCmd.html //! [`atat::AtatResp`]: ../atat/trait.AtatResp.html //! [`atat::AtatUrc`]: ../atat/trait.AtatUrc.html //! [`atat::AtatEnum`]: ../atat/trait.AtatEnum.html //! [`atat::AtatLen`]: ../atat/derive/trait.AtatLen.html //! //! # Examples //! //! ### `AtatCmd` //! See [`AtatCmd`] for descriptions and documentation on required and allowed //! attributes //! //! [`AtatCmd`]: derive.AtatCmd.html //! //! ```ignore //! // Serializing the following struct, results in `AT+USORD=<socket>,<length>\r\n` //! #[derive(AtatCmd)] //! #[at_cmd("+USORD", SocketData)] //! pub struct ReadSocketData { //! #[at_arg(position = 0)] //! pub socket: u8, //! #[at_arg(position = 1)] //! pub length: usize, //! } //! ``` #![deny(warnings)] #![allow(clippy::multiple_crate_versions)] #![allow(clippy::cognitive_complexity)] #![allow(clippy::module_name_repetitions)] #![allow(clippy::too_many_lines)] #![allow(clippy::similar_names)] extern crate proc_macro; extern crate proc_macro2; mod cmd; mod enum_; mod helpers; mod len; mod parse; mod resp; mod urc; use crate::proc_macro::TokenStream; /// Automatically derive [`atat::AtatResp`] trait /// /// [`atat::AtatResp`]: ../atat/trait.AtatResp.html #[proc_macro_derive(AtatResp, attributes(at_arg))] pub fn derive_atat_resp(input: TokenStream) -> TokenStream { resp::atat_resp(input) } /// Automatically derive [`atat::AtatUrc`] trait /// /// [`atat::AtatUrc`]: ../atat/trait.AtatUrc.html #[proc_macro_derive(AtatUrc, attributes(at_urc))] pub fn derive_atat_urc(input: TokenStream) -> TokenStream { urc::atat_urc(input) } /// Automatically derive [`atat::AtatEnum`] trait /// /// [`atat::AtatEnum`]: ../atat/trait.AtatEnum.html /// [`atat::AtatLen`]: ../atat/trait.AtatLen.html /// /// This trait implementation is equivalent to using /// [`serde_repr`](https://docs.rs/serde_repr/0.1.5/serde_repr/), thus removing /// the need for this package in the Atat context. /// /// Furthermore it automatically implements [`atat::AtatLen`], based on the data /// type given in the container attribute. /// /// **NOTE**: When using this derive macro with struct or tuple variants in the enum, one /// should take extra care to avoid large size variations of the variants, as the /// resulting `AtatLen` of the enum will be the length of the representation /// (see `#[at_enum(..)]`) together with the largest sum of field values in the variant. /// /// Eg. /// ```ignore /// use heapless::{consts, String}; /// /// #[derive(AtatEnum)] /// pub enum LargeSizeVariations { /// #[at_arg(value = 0)] /// VariantOne, /// #[at_arg(value = 1)] /// VariantTwo(u8), /// #[at_arg(value = 2)] /// VariantThree(String<consts::U1024>) /// #[at_arg(value = 2)] /// VariantFour(String<consts::U10>, String<consts::U10>, String<consts::U10>) /// } /// ``` /// will result in `<LargeSizeVariations as AtatLen>::Len == consts::U1026`, even for /// `LargeSizeVariations::VariantOne` /// /// ### Container attribute (`#[at_enum(..)]`) /// The `AtatEnum` derive macro comes with an option of annotating the struct with /// a container attribute `#[at_enum(..)]`. /// /// The container attribute only allows specifying a single parameter, that is /// non-optional if the container attribute is present. The parameter allows /// describing the underlying data type of the enum, and thus the maximum /// allowed value of the fields. Only integer types are allowed (`u8`, `u16`, /// `u32`, `u64`, `u128`, `i8`, `i16`, `i32`, `i64`, `i128`, `usize`, `isize`). /// Eg. `#[at_enum(u16)]`. /// /// **Note**: `at_enum` defaults to `u8` /// /// ### Field attribute (`#[at_arg(..)]`) /// The `AtatEnum` derive macro comes with an optional field attribute /// `#[at_arg(..)]`, that can be specified o some or all of the fields. /// /// Allowed options for `at_arg` are: /// - `value` **integer** The value of the serialized field #[proc_macro_derive(AtatEnum, attributes(at_enum, at_arg))] pub fn derive_atat_enum(input: TokenStream) -> TokenStream { enum_::atat_enum(input) } /// Automatically derive [`atat::AtatCmd`] trait /// /// [`atat::AtatCmd`]: ../atat/trait.AtatCmd.html /// /// /// ### Container attribute (`#[at_cmd(..)]`) /// The `AtatCmd` derive macro comes with a requirement of annotating the struct /// with a container attribute `#[at_cmd(..)]`. /// /// This container attribute requires specifying at least a command and an /// expected response struct as: `#[at_cmd("+USORD", SocketData)]` where /// `SocketData` is any type implementing `AtatResp`. /// /// Furthermore the container attribute allows specifying some additional /// options to tweak the command. All optional attributes takes the form `<key> /// = <value>`, eg. `#[at_cmd("+USORD", SocketData, timeout_ms = 10000)]` /// /// Allowed options are: /// - `timeout_ms`: **integer** The maximum timeout in milliseconds of the /// command /// - `abortable`: **bool** Whether or not the command can be aborted /// - `force_receive_state`: **bool** Force the ingress manager into receive /// state immediately after sending (don't wait for echo). This is useful in /// some command patterns. /// - `value_sep`: **bool** Disable the seperator between the command and any /// parameters (default true). Useful to create "fixed" commands, eg. /// `#[at_cmd("+UDCONF=1", NoResponse, value_sep = false)]`. /// - `cmd_prefix`: **string** Overwrite the prefix of the command (default /// 'AT'). Can also be set to '' (empty). /// - `termination`: **string** Overwrite the line termination of the command /// (default '\r\n'). Can also be set to '' (empty). /// /// ### Field attribute (`#[at_arg(..)]`) /// The `AtatCmd` derive macro comes with an optional field attribute /// `#[at_arg(..)]`, that can be specified on some or all of the fields. /// /// Allowed options for `at_arg` are: /// - position: **integer** The index of the field in the resulting command /// string. (eg. for command `AT+CMD=a,b`, field `a` would have `position = 1` /// and field `b` would have `position = 2`) (defaults to order of the fields /// in the struct) #[proc_macro_derive(AtatCmd, attributes(at_cmd, at_arg))] pub fn derive_atat_cmd(input: TokenStream) -> TokenStream { cmd::atat_cmd(input) } /// Automatically derive [`atat::AtatLen`] trait /// /// [`atat::AtatLen`]: ../atat/derive/trait.AtatLen.html /// /// This requires all of the fields to also implement [`atat::AtatLen`] #[proc_macro_derive(AtatLen, attributes(at_arg))] pub fn derive_atat_len(input: TokenStream) -> TokenStream { len::atat_len(input) }