fluidattacks-blends-domain 0.40.0

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

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

    let child_ids = adj_ast(graph, n_id, Some(1), &[]);

    let mut condition_id = child_ids
        .get(2)
        .copied()
        .ok_or(SyntaxGraphError::MissingAstNode)?;

    if graph.label_type(condition_id) == Some("parenthesized_expression") {
        let childs = adj_ast(graph, condition_id, Some(1), &[]);
        if childs.len() > 1 {
            condition_id = childs
                .get(1)
                .copied()
                .ok_or(SyntaxGraphError::UnexpectedAstShape)?;
        }
    }

    let true_id = child_ids
        .get(4)
        .copied()
        .ok_or(SyntaxGraphError::UnexpectedAstShape)?;

    let false_id = if child_ids.len() == 7 {
        child_ids.get(6).copied()
    } else {
        None
    };

    build_if_node(args, n_id, condition_id, Some(true_id), false_id, None).map(Some)
}