fluidattacks-blends-domain 0.41.0

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
27
28
29
30
31
32
33

use crate::syntax::fields::swift::assignment;
use crate::{
    query::adj_ast,
    syntax::{builders::assignment::build_assignment_node, SyntaxGraphArgs, SyntaxGraphError},
    utilities::text_nodes::node_to_str,
    CodeGraph, NodeId,
};

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

    if graph.label_type(variable_id) == Some("directly_assignable_expression") {
        let childs = adj_ast(graph, variable_id, Some(1), &[]);
        if childs.len() == 1 {
            variable_id = childs
                .first()
                .copied()
                .ok_or(SyntaxGraphError::UnexpectedAstShape)?;
        }
    }

    let value_id = args.required_field_alt(n_id, assignment::RESULT)?;

    let operator_id = args.required_field_alt(n_id, assignment::OPERATOR)?;

    let operator = node_to_str(graph, operator_id);

    build_assignment_node(args, n_id, variable_id, Some(value_id), Some(operator)).map(Some)
}