fluidattacks-blends-domain 0.26.0

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

use crate::syntax::builders::import_statement::{build_import_node, ImportElement};
use crate::syntax::fields::go::import_spec;
use crate::syntax::readers::go::common::package_name;
use crate::syntax::{SyntaxGraphArgs, SyntaxGraphError};
use crate::utilities::text_nodes::node_to_str;
use crate::NodeId;

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

    let path_id = args.required_field_alt(n_id, import_spec::PATH)?;
    let path = node_to_str(graph, path_id);
    let expression = path.trim_matches(['"', '`']).to_owned();

    let name: Option<String> = args
        .optional_field_alt(n_id, import_spec::NAME)
        .map(|name_id| node_to_str(graph, name_id))
        .filter(|name| !name.is_empty());

    // A blank or dot import brings no name of its own into scope.
    let (alias, bound_name) = match name {
        Some(name) if name == "_" || name == "." => (None, String::new()),
        Some(name) => (Some(name.clone()), name),
        None => (None, String::from(package_name(&expression))),
    };

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