fluidattacks-blends-domain 0.22.0

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

use crate::query::match_ast_group_d;
use crate::syntax::builders::export_statement::{build_export_statement_node, ExportStatement};
use crate::syntax::fields::javascript::export_statement;
use crate::syntax::readers::javascript::common::strip_quotes;
use crate::syntax::{SyntaxGraphArgs, SyntaxGraphError};
use crate::utilities::text_nodes::node_to_str;
use crate::{CodeGraph, NodeId};

fn specifier_ids(args: &SyntaxGraphArgs<'_>, n_id: NodeId) -> Vec<NodeId> {
    let graph = args.ast_graph;
    match_ast_group_d(graph, n_id, "export_clause", Some(1))
        .into_iter()
        .flat_map(|clause_id| match_ast_group_d(graph, clause_id, "export_specifier", Some(1)))
        .collect()
}

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

    if let Some(block) = declaration_id {
        if matches!(graph.label_type(block), Some("identifier" | "string")) {
            statement.expression = Some(node_to_str(graph, block));
            declaration_id = None;
        }
    } else if let Some(child_id) = match_ast_group_d(graph, n_id, "identifier", Some(1))
        .first()
        .copied()
    {
        statement.expression = Some(node_to_str(graph, child_id));
    }
    statement.declaration_id = declaration_id;

    statement.specifier_ids = specifier_ids(args, n_id);
    if let Some(source_id) = args.optional_field_alt(n_id, export_statement::SOURCE) {
        statement.expression = Some(strip_quotes(&node_to_str(graph, source_id)));
    }

    if let Some(namespace_id) = match_ast_group_d(graph, n_id, "namespace_export", Some(1))
        .first()
        .copied()
    {
        statement.alias = match_ast_group_d(graph, namespace_id, "identifier", Some(1))
            .first()
            .map(|alias_id| node_to_str(graph, *alias_id));
    }

    statement.default_id = match_ast_group_d(graph, n_id, "default", Some(1))
        .first()
        .copied();

    build_export_statement_node(args, n_id, statement).map(Some)
}