fluidattacks-blends-domain 0.17.1

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
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use crate::{
    query::{label_text, match_ast},
    syntax::{
        builders::variable_declaration::build_variable_declaration_node, SyntaxGraphArgs,
        SyntaxGraphError,
    },
    NodeId,
};
use alloc::borrow::ToOwned;

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

    let identifier_id = match_ast(graph, n_id, &["identifier"], Some(1));

    let ident_id = identifier_id.get("identifier").copied().flatten();

    let var_name = ident_id.map_or("", |id| label_text(graph, id).unwrap_or(""));

    build_variable_declaration_node(args, n_id, var_name.to_owned(), None, ident_id, None, None)
        .map(Some)
}