fluidattacks-blends-domain 0.17.1

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

use crate::query::{label_text, pred_ast};
use crate::syntax::builders::import_statement::{build_import_node, ImportElement, ImportLabel};
use crate::syntax::fields::javascript::{import_specifier, import_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};

pub fn reader(
    args: &mut SyntaxGraphArgs<'_>,
    n_id: NodeId,
) -> Result<Option<NodeId>, SyntaxGraphError> {
    let graph = args.ast_graph;
    let stmt_id = pred_ast(graph, n_id, Some(-1))
        .into_iter()
        .find(|id| graph.label_type(*id) == Some("import_statement"));
    let mut expression = stmt_id
        .and_then(|id| args.required_field_alt(id, import_statement::SOURCE).ok())
        .map(|source_id| strip_quotes(&node_to_str(graph, source_id)))
        .unwrap_or_default();

    let identifier = args
        .required_field_alt(n_id, import_specifier::NAME)
        .ok()
        .and_then(|id| label_text(graph, id))
        .map(ToOwned::to_owned)
        .unwrap_or_default();
    expression.push('.');
    expression.push_str(&identifier);

    let alias = args
        .optional_field_alt(n_id, import_specifier::ALIAS)
        .map_or(Some(identifier), |alias_id| {
            label_text(graph, alias_id).map(ToOwned::to_owned)
        });

    build_import_node(
        args,
        n_id,
        &ImportElement {
            expression: Some(expression),
            alias,
            label_type: ImportLabel::ModuleImport,
            ..ImportElement::default()
        },
    )
    .map(Some)
}