fluidattacks-blends-domain 0.28.0

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
24
25
26

use crate::{
    query::{adj_ast, match_ast_d, match_ast_group_d},
    syntax::{
        builders::try_statement::build_try_statement_node, SyntaxGraphArgs, SyntaxGraphError,
    },
    NodeId,
};

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

    let block_id = match_ast_d(graph, n_id, "statements", Some(1))
        .or_else(|| adj_ast(graph, n_id, Some(1), &[]).first().copied())
        .ok_or(SyntaxGraphError::UnexpectedAstShape)?;

    let catch_id = match_ast_d(graph, n_id, "catch_block", Some(1))
        .or_else(|| adj_ast(graph, n_id, Some(1), &[]).last().copied())
        .ok_or(SyntaxGraphError::UnexpectedAstShape)?;

    let catch_statements = match_ast_group_d(graph, catch_id, "statements", Some(1));

    build_try_statement_node(args, n_id, block_id, &catch_statements, None, None).map(Some)
}