flutter_rust_bridge_codegen 2.0.0-dev.0

High-level memory-safe binding generator for Flutter/Dart <-> Rust
Documentation 
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// Name "enumeration" not "enum", since the latter is a keyword

use crate::codegen::ir::comment::IrComment;
use crate::codegen::ir::field::IrField;
use crate::codegen::ir::ident::IrIdent;
use crate::codegen::ir::namespace::{Namespace, NamespacedName};
use crate::codegen::ir::ty::structure::IrStruct;
use crate::codegen::ir::ty::{IrContext, IrType, IrTypeTrait};
use convert_case::{Case, Casing};

crate::ir! {
pub struct IrTypeEnumRef {
    pub ident: IrEnumIdent,
    pub is_exception: bool,
}

pub struct IrEnumIdent(pub NamespacedName);

pub struct IrEnum {
    pub name: NamespacedName,
    pub wrapper_name: Option<String>,
    pub comments: Vec<IrComment>,
    pub variants: Vec<IrVariant>,
    pub mode: IrEnumMode,
}

#[derive(Copy)]
pub enum IrEnumMode {
    Simple,
    Complex,
}

pub struct IrVariant {
    pub name: IrIdent,
    pub wrapper_name: IrIdent,
    pub comments: Vec<IrComment>,
    pub kind: IrVariantKind,
}

pub enum IrVariantKind {
    Value,
    Struct(IrStruct),
}
}

impl IrTypeEnumRef {
    #[inline]
    pub fn get<'a>(&self, file: &'a impl IrContext) -> &'a IrEnum {
        &file.enum_pool()[&self.ident]
    }
}

impl IrTypeTrait for IrTypeEnumRef {
    fn visit_children_types<F: FnMut(&IrType) -> bool>(
        &self,
        f: &mut F,
        ir_context: &impl IrContext,
    ) {
        let enu = self.get(ir_context);
        for variant in enu.variants() {
            if let IrVariantKind::Struct(st) = &variant.kind {
                st.fields
                    .iter()
                    .for_each(|field| field.ty.visit_types(f, ir_context));
            }
        }
    }

    fn safe_ident(&self) -> String {
        self.ident.0.name.to_case(Case::Snake)
    }

    fn rust_api_type(&self) -> String {
        self.ident.0.rust_style()
    }

    fn self_namespace(&self) -> Option<Namespace> {
        Some(self.ident.0.namespace.clone())
    }
}

impl IrEnum {
    pub fn variants(&self) -> &[IrVariant] {
        &self.variants
    }
}

impl IrVariantKind {
    pub(crate) fn fields(&self) -> Vec<IrField> {
        match self {
            IrVariantKind::Value => vec![],
            IrVariantKind::Struct(st) => st.fields.clone(),
        }
    }
}

impl From<NamespacedName> for IrEnumIdent {
    fn from(value: NamespacedName) -> Self {
        Self(value)
    }
}