fluidattacks-blends-domain 0.2.0

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
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use crate::query::adj_ast;
use crate::syntax::builders::do_statement::build_do_statement_node;
use crate::syntax::readers::constants::{C_SHARP_EXPRESSION, C_SHARP_STATEMENT};
use crate::syntax::{SyntaxGraphArgs, SyntaxGraphError};
use crate::{CodeGraph, NodeId};

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 mut body_id = c_ids
        .iter()
        .copied()
        .rfind(|c_id| {
            graph
                .label_type(*c_id)
                .is_some_and(|kind| C_SHARP_STATEMENT.contains(&kind))
        })
        .ok_or(SyntaxGraphError::UnexpectedAstShape)?;
    if graph.label_type(body_id) == Some("expression_statement") {
        body_id = adj_ast(graph, body_id, Some(1), &[])
            .first()
            .copied()
            .ok_or(SyntaxGraphError::UnexpectedAstShape)?;
    }

    let condition_id = c_ids
        .iter()
        .copied()
        .rfind(|c_id| {
            graph
                .label_type(*c_id)
                .is_some_and(|kind| C_SHARP_EXPRESSION.contains(&kind))
        })
        .ok_or(SyntaxGraphError::UnexpectedAstShape)?;

    build_do_statement_node(args, n_id, body_id, condition_id).map(Some)
}