fluidattacks-blends-domain 0.23.0

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

use crate::query::{adj_ast, match_ast_group_d};
use crate::syntax::builders::array_node::build_array_node;
use crate::syntax::builders::object::build_object_node;
use crate::syntax::builders::object_creation::build_object_creation_node;
use crate::syntax::fields::go::composite_literal;
use crate::syntax::readers::go::common::literal_elements;
use crate::syntax::{SyntaxGraphArgs, SyntaxGraphError};
use crate::utilities::text_nodes::node_to_str;
use crate::{CodeGraph, NodeId};

const VALID_PARAMETERS: &[&str] = &["literal_value", "qualified_type"];
const NAMED_TYPES: &[&str] = &["type_identifier", "qualified_type"];
const ARRAY_TYPES: &[&str] = &["array_type", "implicit_length_array_type", "slice_type"];

pub fn reader(
    args: &mut SyntaxGraphArgs<'_>,
    n_id: NodeId,
) -> Result<Option<NodeId>, SyntaxGraphError> {
    let graph = args.ast_graph;
    let c_ids = adj_ast(graph, n_id, None, &[]);

    if let [type_id, value_id] = *c_ids.as_slice() {
        if graph.label_type(value_id) == Some("literal_value")
            && !match_ast_group_d(graph, value_id, "keyed_element", None).is_empty()
        {
            let name = node_to_str(graph, type_id);
            let initializer_id = if graph.label_type(type_id) == Some("map_type") {
                None
            } else {
                Some(type_id)
            };
            return build_object_creation_node(
                args,
                n_id,
                name,
                Some(value_id),
                initializer_id,
                None,
            )
            .map(Some);
        }
    }

    let type_id = args.required_field_alt(n_id, composite_literal::TYPE)?;
    if ARRAY_TYPES.contains(&graph.label_type(type_id).unwrap_or_default()) {
        let body_id = args.required_field_alt(n_id, composite_literal::BODY)?;
        let elements = literal_elements(graph, body_id);
        return build_array_node(args, n_id, &elements).map(Some);
    }

    let name = if NAMED_TYPES.contains(&graph.label_type(type_id).unwrap_or_default()) {
        Some(node_to_str(graph, type_id))
    } else {
        None
    };

    let filtered: Vec<NodeId> = c_ids
        .into_iter()
        .filter(|c_id| VALID_PARAMETERS.contains(&graph.label_type(*c_id).unwrap_or_default()))
        .collect();
    build_object_node(args, n_id, &filtered, name, None).map(Some)
}