fluidattacks-blends-domain 0.17.1

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
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54

use crate::{
    query::{adj_ast, label_text},
    syntax::{
        builders::unary_expression::build_unary_expression_node, SyntaxGraphArgs, SyntaxGraphError,
    },
    CodeGraph, NodeId,
};
use alloc::borrow::ToOwned;

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

    let possible_operands = &[
        "member_access_expression",
        "variable_name",
        "scoped_property_access_expression",
        "subscript_expression",
    ];

    let mut operand_n_id: Option<NodeId> = None;
    let mut operator_n_id: Option<NodeId> = None;

    let childs = adj_ast(graph, n_id, Some(1), &[]);

    for &c_id in &childs {
        if possible_operands.contains(&graph.label_type(c_id).unwrap_or("")) {
            operand_n_id = Some(c_id);
        } else {
            operator_n_id = Some(c_id);
        }
    }

    let (operator_id, operand_id) =
        if let (Some(operand), Some(operator)) = (operand_n_id, operator_n_id) {
            (operator, operand)
        } else {
            let operand = childs
                .first()
                .copied()
                .ok_or(SyntaxGraphError::UnexpectedAstShape)?;
            let operator = childs
                .last()
                .copied()
                .ok_or(SyntaxGraphError::UnexpectedAstShape)?;
            (operator, operand)
        };

    let operator = label_text(graph, operator_id).ok_or(SyntaxGraphError::UnexpectedAstShape)?;

    build_unary_expression_node(args, n_id, operator.to_owned(), operand_id).map(Some)
}