fluidattacks-blends-domain 0.6.1

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
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use crate::query::{adj_ast, match_ast};
use crate::syntax::builders::parenthesized_expression::build_parenthesized_expression_node;
use crate::syntax::{SyntaxGraphArgs, SyntaxGraphError};
use crate::NodeId;

pub fn reader(
    args: &mut SyntaxGraphArgs<'_>,
    n_id: NodeId,
) -> Result<Option<NodeId>, SyntaxGraphError> {
    let graph = args.ast_graph;
    let expr_id = match_ast(graph, n_id, &[], None)
        .get("__1__")
        .copied()
        .flatten()
        .or_else(|| adj_ast(graph, n_id, None, &[]).into_iter().next_back())
        .ok_or(SyntaxGraphError::UnexpectedAstShape)?;
    build_parenthesized_expression_node(args, n_id, expr_id).map(Some)
}