fluidattacks-blends-domain 0.23.0

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
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use crate::{
    query::adj_ast,
    syntax::{
        builders::member_access::build_member_access_node, SyntaxGraphArgs, SyntaxGraphError,
    },
    utilities::text_nodes::node_to_str,
    CodeGraph, NodeId,
};
use alloc::vec::Vec;

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

    let child_ids: Vec<NodeId> = adj_ast(graph, n_id, Some(1), &[])
        .into_iter()
        .filter(|&c_id| graph.label_type(c_id) != Some("line_comment"))
        .collect();

    let Some(&first_id) = child_ids.first() else {
        return Ok(None);
    };

    let identifier_id = child_ids
        .get(1)
        .filter(|_| child_ids.len() == 2)
        .filter(|&&suffix_id| graph.label_type(suffix_id) == Some("navigation_suffix"))
        .and_then(|&suffix_id| adj_ast(graph, suffix_id, Some(1), &[]).get(1).copied());

    let member = identifier_id.map_or_else(
        || node_to_str(graph, *child_ids.last().unwrap_or(&first_id)),
        |id| node_to_str(graph, id),
    );

    let expression = node_to_str(graph, first_id);

    build_member_access_node(args, n_id, member, expression, first_id).map(Some)
}