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proc: command: associated fns instead of methods

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🪞👃🪞 2025-05-08 18:37:42 +03:00
parent 2a6087e1c7
commit a16603fbc8
1 changed files with 39 additions and 74 deletions
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113
proc/src/proc_command.rs
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@ -109,21 +109,28 @@ impl CommandArm {
fn ident_to_enum_variant (ident: &Ident) -> Arc<str> {
format!("{}", AsUpperCamelCase(format!("{ident}"))).into()
}
fn has_args (&self) -> bool {
self.1.len() > 1
}
fn args (&self) -> impl Iterator<Item = (&Ident, &Box<Type>)> {
self.1.iter().skip(1).filter_map(|arg|if let FnArg::Typed(PatType {
ty, pat: box Pat::Ident(PatIdent { ident: arg, .. }), ..
}) = arg {
Some((arg, ty))
} else {
unreachable!("only typed args should be present at this position");
None
})
}
fn to_enum_variant_def (&self) -> TokenStream2 {
let mut out = TokenStream2::new();
out.append(self.to_enum_variant_ident());
let ident = &self.0;
if self.1.len() > 2 {
if self.has_args() {
out.append(Group::new(Delimiter::Brace, {
let mut out = TokenStream2::new();
for arg in self.1.iter().skip(2) {
if let FnArg::Typed(PatType {
ty, pat: box Pat::Ident(PatIdent { ident, .. }), ..
}) = arg {
write_quote_to(&mut out, quote! { #ident : #ty , });
} else {
unreachable!("only typed args should be present at this position")
}
for (arg, ty) in self.args() {
write_quote_to(&mut out, quote! { #arg : #ty , });
}
out
}));
@ -135,24 +142,18 @@ impl CommandArm {
let mut out = TokenStream2::new();
out.append(self.to_enum_variant_ident());
let ident = &self.0;
if self.1.len() > 2 {
if self.has_args() {
out.append(Group::new(Delimiter::Brace, {
let mut out = TokenStream2::new();
for arg in self.1.iter().skip(2) {
if let FnArg::Typed(PatType {
ty, pat: box Pat::Ident(PatIdent { ident: arg, .. }), ..
}) = arg {
let take_err = LitStr::new(&format!("{}: missing argument \"{}\" ({})",
quote!{#ident}, quote!{#arg}, quote!{#ty}), Span::call_site());
let give_err = LitStr::new(&format!("{}: missing value \"{}\" ({})",
quote!{#ident}, quote!{#arg}, quote!{#ty}), Span::call_site());
write_quote_to(&mut out, quote! {
#arg : Context::get(state, &iter.next().expect(#take_err).value)
.expect(#give_err) ,
});
} else {
unreachable!("only typed args should be present at this position")
}
for (arg, ty) in self.args() {
let take_err = LitStr::new(&format!("{}: missing argument \"{}\" ({})",
quote!{#ident}, quote!{#arg}, quote!{#ty}), Span::call_site());
let give_err = LitStr::new(&format!("{}: missing value \"{}\" ({})",
quote!{#ident}, quote!{#arg}, quote!{#ty}), Span::call_site());
write_quote_to(&mut out, quote! {
#arg : Context::get(state, &iter.next().expect(#take_err).value)
.expect(#give_err) ,
});
}
out
}));
@ -163,17 +164,11 @@ impl CommandArm {
let mut out = TokenStream2::new();
out.append(self.to_enum_variant_ident());
let ident = &self.0;
if self.1.len() > 2 {
if self.has_args() {
out.append(Group::new(Delimiter::Brace, {
let mut out = TokenStream2::new();
for arg in self.1.iter().skip(2) {
if let FnArg::Typed(PatType {
ty, pat: box Pat::Ident(PatIdent { ident: arg, .. }), ..
}) = arg {
write_quote_to(&mut out, quote! { #arg , });
} else {
unreachable!("only typed args should be present at this position")
}
for (arg, ty) in self.args() {
write_quote_to(&mut out, quote! { #arg , });
}
out
}));
@ -181,52 +176,21 @@ impl CommandArm {
out
}
fn to_matcher (&self) -> TokenStream2 {
let mut out = TokenStream2::new();
let key = LitStr::new(&self.to_key(), Span::call_site());
let ident = &self.0;
let take_args = self.1.iter().skip(2).map(|arg|{
if let FnArg::Typed(PatType {
ty, pat: box Pat::Ident(PatIdent { ident: arg, .. }), ..
}) = arg {
let take_err = LitStr::new(&format!("{}: missing argument \"{}\" ({})",
quote!{#ident}, quote!{#arg}, quote!{#ty}), Span::call_site());
write_quote(quote! {
let #ident: #ty = Context::<#ty>::get(
state,
&iter.next().expect(#take_err).value
);
})
} else {
unreachable!("only typed args should be present at this position")
}
}).collect::<Vec<_>>();
let variant = Self::ident_to_enum_variant(&self.0);
let key = LitStr::new(&self.to_key(), Span::call_site());
let variant = self.to_enum_variant_bind();
let pattern = quote! {
Some(::tengri::dsl::Token { value: ::tengri::dsl::Value::Key(#key), .. })
};
write_quote(quote! {
Some(::tengri::dsl::Token { value: ::tengri::dsl::Value::Key(#key), .. }) => {
let mut iter = iter.clone();
//#(#take_args)*
//let rest = iter; // TODO
Some(Self::#variant)
},
#pattern => { let mut iter = iter.clone(); Some(Self::#variant) },
})
}
fn to_implementation (&self) -> TokenStream2 {
let ident = &self.0;
let variant = self.to_enum_variant_unbind();
let mut give_rest = write_quote(quote! { /*TODO*/ });
let give_args = self.1.iter().skip(2).map(|arg|{
if let FnArg::Typed(PatType {
ty, pat: box Pat::Ident(PatIdent { ident: arg, .. }), ..
}) = arg {
//let give_err = LitStr::new(&format!("{}: missing value \"{}\" ({})",
//quote!{#ident}, quote!{#pat}, quote!{#ty}), Span::call_site());
write_quote(quote! { #arg, })
} else {
unreachable!("only typed args should be present at this position")
}
}).collect::<Vec<_>>();
write_quote(quote! { Self::#variant => self.#ident(state, #(#give_args)* #give_rest), })
let give_args = self.args().map(|(arg, ty)|write_quote(quote! { #arg, })).collect::<Vec<_>>();
write_quote(quote! { Self::#variant => Self::#ident(state, #(#give_args)* #give_rest), })
}
}
@ -269,8 +233,9 @@ impl ToTokens for CommandArm {
}));
out.append(Punct::new('=', Joint));
out.append(Punct::new('>', Alone));
out.append(Ident::new("self", Span::call_site()));
out.append(Punct::new('.', Alone));
out.append(Ident::new("Self", Span::call_site()));
out.append(Punct::new(':', Joint));
out.append(Punct::new(':', Alone));
out.append(ident.clone());
out.append(Group::new(Delimiter::Parenthesis, {
let mut out = TokenStream2::new();