fluidattacks-blends-domain 0.28.0

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
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use crate::{
    syntax::{
        builders::{class_declaration::build_class_node, declaration::build_declaration_node},
        fields::{swift::class_declaration, Field},
        SyntaxGraphArgs, SyntaxGraphError,
    },
    utilities::text_nodes::node_to_str,
    NodeId,
};
use alloc::string::String;

const DECLARATION_KIND: Field<false> = Field::new("declaration_kind_id");

pub fn reader(
    args: &mut SyntaxGraphArgs<'_>,
    n_id: NodeId,
) -> Result<Option<NodeId>, SyntaxGraphError> {
    let graph = args.ast_graph;

    let name_id = args.required_field_alt(n_id, class_declaration::NAME)?;
    let name = node_to_str(graph, name_id);
    let block_id = args.required_field_alt(n_id, class_declaration::BODY)?;

    let kind = args
        .optional_field_alt(n_id, DECLARATION_KIND)
        .map_or_else(String::new, |kind_id| node_to_str(graph, kind_id));

    if matches!(kind.as_str(), "struct" | "enum") {
        return build_declaration_node(args, n_id, name, Some(block_id), None).map(Some);
    }

    build_class_node(args, n_id, name, Some(block_id), &[], None, None, None).map(Some)
}