52 lines
1.6 KiB
Rust
52 lines
1.6 KiB
Rust
use std::sync::{Arc, OnceLock};
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use enum_iterator::{all, Sequence};
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use crate::Identifier;
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pub fn all_built_in_identifiers() -> impl Iterator<Item = BuiltInIdentifier> {
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all()
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}
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static OPTION: OnceLock<Identifier> = OnceLock::new();
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static NONE: OnceLock<Identifier> = OnceLock::new();
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static SOME: OnceLock<Identifier> = OnceLock::new();
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static RESULT: OnceLock<Identifier> = OnceLock::new();
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static OK: OnceLock<Identifier> = OnceLock::new();
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static ERROR: OnceLock<Identifier> = OnceLock::new();
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#[derive(Sequence, Debug)]
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pub enum BuiltInIdentifier {
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Option,
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None,
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Some,
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Result,
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Ok,
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Error,
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}
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impl BuiltInIdentifier {
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pub fn get(&self) -> &Identifier {
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match self {
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BuiltInIdentifier::Option => {
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OPTION.get_or_init(|| Identifier::from_raw_parts(Arc::new("Option".to_string())))
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}
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BuiltInIdentifier::None => {
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NONE.get_or_init(|| Identifier::from_raw_parts(Arc::new("None".to_string())))
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}
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BuiltInIdentifier::Some => {
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SOME.get_or_init(|| Identifier::from_raw_parts(Arc::new("Some".to_string())))
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}
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BuiltInIdentifier::Result => {
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RESULT.get_or_init(|| Identifier::from_raw_parts(Arc::new("Result".to_string())))
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}
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BuiltInIdentifier::Ok => {
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OK.get_or_init(|| Identifier::from_raw_parts(Arc::new("Ok".to_string())))
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}
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BuiltInIdentifier::Error => {
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ERROR.get_or_init(|| Identifier::from_raw_parts(Arc::new("Error".to_string())))
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}
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}
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}
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}
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