cairo-language-server 2.19.0-rc.2

The Cairo Language Server
Documentation 
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use cairo_lang_filesystem::span::TextSpan;
use cairo_lang_syntax::node::ast::{
    Attribute, FunctionWithBody, ItemConstant, ItemEnum, ItemExternFunction, ItemExternType,
    ItemImpl, ItemImplAlias, ItemModule, ItemStruct, ItemTrait, ItemTypeAlias, ItemUse,
};
use cairo_lang_syntax::node::{SyntaxNode, TypedSyntaxNode};
use itertools::Itertools;
use salsa::Database;

pub trait ItemWithAttributes<'db> {
    fn item_attributes(&self, db: &'db dyn Database) -> Vec<Attribute<'db>>;
    fn span_with_trivia(&self, db: &'db dyn Database) -> TextSpan;
}

pub trait ChildNodesWithoutAttributes<'db> {
    fn child_nodes_without_attributes(
        &self,
        db: &'db dyn Database,
    ) -> impl Iterator<Item = SyntaxNode<'db>>;
}

macro_rules! impl_child_nodes_without_attributes {
    ($t:ty, [$($child:ident),* $(,)?]) => {
        impl<'db> ChildNodesWithoutAttributes<'db> for $t {
            fn child_nodes_without_attributes(
                &self,
                db: &'db dyn Database,
            ) -> impl Iterator<Item = SyntaxNode<'db>> {
                [
                    $(self.$child(db).as_syntax_node()),*
                ].into_iter()
            }
        }
    };
}

macro_rules! impl_item_with_attributes {
    ($t:ty) => {
        impl<'db> ItemWithAttributes<'db> for $t {
            fn item_attributes(&self, db: &'db dyn Database) -> Vec<Attribute<'db>> {
                self.attributes(db).elements(db).collect_vec()
            }
            fn span_with_trivia(&self, db: &'db dyn Database) -> TextSpan {
                self.as_syntax_node().span(db)
            }
        }
    };
}

impl_item_with_attributes!(ItemTrait<'db>);
impl_child_nodes_without_attributes!(
    ItemTrait<'db>,
    [visibility, trait_kw, name, generic_params, body]
);

impl_item_with_attributes!(ItemImpl<'db>);
impl_child_nodes_without_attributes!(
    ItemImpl<'db>,
    [visibility, impl_kw, name, generic_params, of_kw, trait_path, body]
);

impl_item_with_attributes!(ItemModule<'db>);
impl_child_nodes_without_attributes!(ItemModule<'db>, [visibility, module_kw, name, body]);

impl_item_with_attributes!(FunctionWithBody<'db>);
impl_child_nodes_without_attributes!(FunctionWithBody<'db>, [visibility, declaration, body]);

impl_item_with_attributes!(ItemExternFunction<'db>);
impl_child_nodes_without_attributes!(
    ItemExternFunction<'db>,
    [visibility, extern_kw, declaration, semicolon]
);

impl_item_with_attributes!(ItemExternType<'db>);
impl_child_nodes_without_attributes!(
    ItemExternType<'db>,
    [visibility, extern_kw, type_kw, name, generic_params, semicolon]
);

impl_item_with_attributes!(ItemStruct<'db>);
impl_child_nodes_without_attributes!(
    ItemStruct<'db>,
    [visibility, struct_kw, name, generic_params, lbrace, members, rbrace]
);

impl_item_with_attributes!(ItemEnum<'db>);
impl_child_nodes_without_attributes!(
    ItemEnum<'db>,
    [visibility, enum_kw, name, generic_params, lbrace, variants, rbrace]
);

impl_item_with_attributes!(ItemConstant<'db>);
impl_child_nodes_without_attributes!(
    ItemConstant<'db>,
    [visibility, const_kw, name, type_clause, eq, value, semicolon]
);

impl_item_with_attributes!(ItemUse<'db>);
impl_child_nodes_without_attributes!(ItemUse<'db>, [visibility, use_kw, use_path, semicolon]);

impl_item_with_attributes!(ItemImplAlias<'db>);
impl_child_nodes_without_attributes!(
    ItemImplAlias<'db>,
    [visibility, impl_kw, name, generic_params, eq, impl_path, semicolon]
);

impl_item_with_attributes!(ItemTypeAlias<'db>);
impl_child_nodes_without_attributes!(
    ItemTypeAlias<'db>,
    [visibility, type_kw, name, generic_params, eq, ty, semicolon]
);