1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78
// Copyright 2019-2020 Parity Technologies (UK) Ltd. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. use crate::tm_std::*; use crate::{ form::{CompactForm, Form, MetaForm}, Field, IntoCompact, Registry, }; use derive_more::From; use serde::Serialize; /// A composite type, consisting of either named (struct) or unnamed (tuple /// struct) fields /// /// # Examples /// /// ## A Rust struct with named fields. /// /// ``` /// struct Person { /// name: String, /// age_in_years: u8, /// friends: Vec<Person>, /// } /// ``` /// /// ## A tuple struct with unnamed fields. /// /// ``` /// struct Color(u8, u8, u8); /// ``` /// /// ## A so-called unit struct /// /// ``` /// struct JustAMarker; /// ``` #[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Debug, Serialize, From)] #[serde(bound = "F::TypeId: Serialize")] #[serde(rename_all = "lowercase")] pub struct TypeDefComposite<F: Form = MetaForm> { #[serde(skip_serializing_if = "Vec::is_empty")] fields: Vec<Field<F>>, } impl IntoCompact for TypeDefComposite { type Output = TypeDefComposite<CompactForm>; fn into_compact(self, registry: &mut Registry) -> Self::Output { TypeDefComposite { fields: registry.map_into_compact(self.fields), } } } impl TypeDefComposite { /// Creates a new struct definition with named fields. pub fn new<I>(fields: I) -> Self where I: IntoIterator<Item = Field>, { Self { fields: fields.into_iter().collect(), } } }