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use crate::{build_config::BuildConfig, error::*, parser::Rule};

use sway_types::{ident::Ident, span::Span};

use pest::iterators::Pair;

use nanoid::nanoid;

pub(crate) fn parse_from_pair(
    pair: Pair<Rule>,
    config: Option<&BuildConfig>,
) -> CompileResult<Ident> {
    let path = config.map(|config| config.path());
    let span = {
        if pair.as_rule() != Rule::ident {
            Span {
                span: pair.into_inner().next().unwrap().as_span(),
                path,
            }
        } else {
            Span {
                span: pair.as_span(),
                path,
            }
        }
    };
    ok(Ident::new(span), Vec::new(), Vec::new())
}

pub(crate) fn random_name(span: Span, config: Option<&BuildConfig>) -> Ident {
    let mut name_str: &'static str = Box::leak(nanoid!(32).into_boxed_str());
    if let Some(config) = config {
        while config.generated_names.lock().unwrap().contains(&name_str) {
            name_str = Box::leak(nanoid!(32).into_boxed_str());
        }
        config.generated_names.lock().unwrap().push(name_str);
    }
    Ident::new_with_override(name_str, span)
}