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Diffstat (limited to 'macros/src/factory/declare_default_args.rs')
| -rw-r--r-- | macros/src/factory/declare_default_args.rs | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/macros/src/factory/declare_default_args.rs b/macros/src/factory/declare_default_args.rs deleted file mode 100644 index 9930f4f..0000000 --- a/macros/src/factory/declare_default_args.rs +++ /dev/null @@ -1,232 +0,0 @@ -use syn::parse::Parse; -use syn::punctuated::Punctuated; -use syn::{Token, Type}; - -use crate::macro_flag::MacroFlag; -use crate::util::iterator_ext::IteratorExt; - -pub const FACTORY_MACRO_FLAGS: &[&str] = &["threadsafe", "async"]; - -pub struct DeclareDefaultFactoryMacroArgs -{ - pub interface: Type, - pub flags: Punctuated<MacroFlag, Token![,]>, -} - -impl Parse for DeclareDefaultFactoryMacroArgs -{ - fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> - { - let interface = input.parse()?; - - if !input.peek(Token![,]) { - return Ok(Self { - interface, - flags: Punctuated::new(), - }); - } - - input.parse::<Token![,]>()?; - - let flags = Punctuated::<MacroFlag, Token![,]>::parse_terminated(input)?; - - for flag in &flags { - let name = flag.name().to_string(); - - if !FACTORY_MACRO_FLAGS.contains(&name.as_str()) { - return Err(input.error(format!( - "Unknown flag '{name}'. Expected one of [ {} ]", - FACTORY_MACRO_FLAGS.join(",") - ))); - } - } - - let flag_names = flags - .iter() - .map(|flag| flag.name().to_string()) - .collect::<Vec<_>>(); - - if let Some((dupe_flag_name, _)) = flag_names.iter().find_duplicate() { - return Err(input.error(format!("Duplicate flag '{dupe_flag_name}'"))); - } - - Ok(Self { interface, flags }) - } -} - -#[cfg(test)] -mod tests -{ - use proc_macro2::Span; - use quote::{format_ident, quote}; - use syn::token::Dyn; - use syn::{ - parse2, - Lit, - LitBool, - Path, - PathArguments, - PathSegment, - TraitBound, - TraitBoundModifier, - Type, - TypeParamBound, - TypeTraitObject, - }; - - use super::*; - use crate::macro_flag::MacroFlagValue; - - #[test] - fn can_parse_with_interface_only() - { - let input_args = quote! { - dyn IFoo - }; - - let dec_def_fac_args = - parse2::<DeclareDefaultFactoryMacroArgs>(input_args).unwrap(); - - assert_eq!( - dec_def_fac_args.interface, - Type::TraitObject(TypeTraitObject { - dyn_token: Some(Dyn::default()), - bounds: Punctuated::from_iter(vec![TypeParamBound::Trait(TraitBound { - paren_token: None, - modifier: TraitBoundModifier::None, - lifetimes: None, - path: Path { - leading_colon: None, - segments: Punctuated::from_iter(vec![PathSegment { - ident: format_ident!("IFoo"), - arguments: PathArguments::None - }]) - } - })]) - }) - ); - - assert!(dec_def_fac_args.flags.is_empty()); - } - - #[test] - fn can_parse_with_interface_and_single_flag() - { - let input_args = quote! { - dyn IBar, threadsafe = true - }; - - let dec_def_fac_args = - parse2::<DeclareDefaultFactoryMacroArgs>(input_args).unwrap(); - - assert_eq!( - dec_def_fac_args.interface, - Type::TraitObject(TypeTraitObject { - dyn_token: Some(Dyn::default()), - bounds: Punctuated::from_iter(vec![TypeParamBound::Trait(TraitBound { - paren_token: None, - modifier: TraitBoundModifier::None, - lifetimes: None, - path: Path { - leading_colon: None, - segments: Punctuated::from_iter(vec![PathSegment { - ident: format_ident!("IBar"), - arguments: PathArguments::None - }]) - } - })]) - }) - ); - - assert_eq!( - dec_def_fac_args.flags, - Punctuated::from_iter(vec![MacroFlag { - name: format_ident!("threadsafe"), - value: MacroFlagValue::Literal(Lit::Bool(LitBool::new( - true, - Span::call_site() - ))) - }]) - ); - } - - #[test] - fn can_parse_with_interface_and_multiple_flags() - { - let input_args = quote! { - dyn IBar, threadsafe = true, async = false - }; - - let dec_def_fac_args = - parse2::<DeclareDefaultFactoryMacroArgs>(input_args).unwrap(); - - assert_eq!( - dec_def_fac_args.interface, - Type::TraitObject(TypeTraitObject { - dyn_token: Some(Dyn::default()), - bounds: Punctuated::from_iter(vec![TypeParamBound::Trait(TraitBound { - paren_token: None, - modifier: TraitBoundModifier::None, - lifetimes: None, - path: Path { - leading_colon: None, - segments: Punctuated::from_iter(vec![PathSegment { - ident: format_ident!("IBar"), - arguments: PathArguments::None - }]) - } - })]) - }) - ); - - assert_eq!( - dec_def_fac_args.flags, - Punctuated::from_iter(vec![ - MacroFlag { - name: format_ident!("threadsafe"), - value: MacroFlagValue::Literal(Lit::Bool(LitBool::new( - true, - Span::call_site() - ))) - }, - MacroFlag { - name: format_ident!("async"), - value: MacroFlagValue::Literal(Lit::Bool(LitBool::new( - false, - Span::call_site() - ))) - } - ]) - ); - } - - #[test] - fn cannot_parse_with_interface_and_invalid_flag() - { - let input_args = quote! { - dyn IBar, async = true, foo = false - }; - - assert!(parse2::<DeclareDefaultFactoryMacroArgs>(input_args).is_err()); - } - - #[test] - fn cannot_parse_with_interface_and_duplicate_flag() - { - assert!( - // Formatting is weird without this comment - parse2::<DeclareDefaultFactoryMacroArgs>(quote! { - dyn IBar, async = true, threadsafe = false, async = true - }) - .is_err() - ); - - assert!( - // Formatting is weird without this comment - parse2::<DeclareDefaultFactoryMacroArgs>(quote! { - dyn IBar, async = true, threadsafe = false, async = false - }) - .is_err() - ); - } -} |