fluidattacks-blends-domain 0.6.1

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

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 match_ast(graph, n_id, &[], None)
        .get("__1__")
        .copied()
        .flatten()
    {
        Some(id) => id,
        None => adj_ast(graph, n_id, None, &[])
            .into_iter()
            .next()
            .ok_or(SyntaxGraphError::UnexpectedAstShape)?,
    };
    build_parenthesized_expression_node(args, n_id, expr_id).map(Some)
}