fluidattacks-blends-domain 0.22.0

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
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use alloc::vec::Vec;

use crate::query::{match_ast_group_d, pred_ast};
use crate::syntax::builders::switch_body::build_switch_body_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 switch_id = pred_ast(graph, n_id, None)
        .first()
        .copied()
        .ok_or(SyntaxGraphError::UnexpectedAstShape)?;

    let mut case_ids: Vec<NodeId> = match_ast_group_d(graph, switch_id, "expression_case", None);
    case_ids.extend(match_ast_group_d(graph, switch_id, "default_case", None));
    case_ids.extend(match_ast_group_d(graph, switch_id, "type_case", None));

    build_switch_body_node(args, n_id, &case_ids, None).map(Some)
}