fluidattacks-blends-domain 0.28.0

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
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use crate::{
    query::adj_ast,
    syntax::{
        builders::{argument::build_argument_node, named_argument::build_named_argument_node},
        fields::swift::value_argument,
        SyntaxGraphArgs, SyntaxGraphError,
    },
    utilities::text_nodes::node_to_str,
    NodeId,
};

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

    let value_id = args
        .optional_field_alt(n_id, value_argument::VALUE)
        .or_else(|| adj_ast(graph, n_id, Some(1), &[]).last().copied())
        .ok_or(SyntaxGraphError::UnexpectedAstShape)?;

    if let Some(identifier_id) = args.optional_field_alt(n_id, value_argument::NAME) {
        let arg_name = node_to_str(graph, identifier_id);
        return build_named_argument_node(args, n_id, Some(arg_name), value_id).map(Some);
    }

    build_argument_node(args, n_id, &[value_id]).map(Some)
}