rust/crates/ra_hir/src/impl_block.rs

//! FIXME: write short doc here

use hir_def::{type_ref::TypeRef, AstItemDef};
use ra_syntax::ast::{self};

use crate::{
    db::{AstDatabase, DefDatabase, HirDatabase},
    resolve::HasResolver,
    ty::Ty,
    AssocItem, Crate, HasSource, ImplBlock, Module, Source, TraitRef,
};

impl HasSource for ImplBlock {
    type Ast = ast::ImplBlock;
    fn source(self, db: &(impl DefDatabase + AstDatabase)) -> Source<ast::ImplBlock> {
        self.id.source(db)
    }
}

impl ImplBlock {
    pub fn target_trait(&self, db: &impl DefDatabase) -> Option<TypeRef> {
        db.impl_data(self.id).target_trait().cloned()
    }

    pub fn target_type(&self, db: &impl DefDatabase) -> TypeRef {
        db.impl_data(self.id).target_type().clone()
    }

    pub fn target_ty(&self, db: &impl HirDatabase) -> Ty {
        Ty::from_hir(db, &self.resolver(db), &self.target_type(db))
    }

    pub fn target_trait_ref(&self, db: &impl HirDatabase) -> Option<TraitRef> {
        let target_ty = self.target_ty(db);
        TraitRef::from_hir(db, &self.resolver(db), &self.target_trait(db)?, Some(target_ty))
    }

    pub fn items(&self, db: &impl DefDatabase) -> Vec<AssocItem> {
        db.impl_data(self.id).items().iter().map(|it| (*it).into()).collect()
    }

    pub fn is_negative(&self, db: &impl DefDatabase) -> bool {
        db.impl_data(self.id).is_negative()
    }

    pub fn module(&self, db: &impl DefDatabase) -> Module {
        self.id.module(db).into()
    }

    pub fn krate(&self, db: &impl DefDatabase) -> Crate {
        Crate { crate_id: self.module(db).id.krate }
    }
}