fluidattacks-blends-domain 0.26.0

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
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use crate::{
    query::{adj_ast, label_text},
    syntax::{
        builders::unary_expression::build_unary_expression_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 c_ids = adj_ast(graph, n_id, Some(1), &[]);

    let operator = c_ids
        .first()
        .and_then(|&op_id| label_text(graph, op_id))
        .unwrap_or("");

    let operand = c_ids.get(1).copied().unwrap_or(n_id);

    build_unary_expression_node(args, n_id, operator.to_owned(), operand).map(Some)
}