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add artemis pfs unpack support

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lifegpc
2025-07-22 16:27:22 +08:00
parent 6cd356d52d
commit c9aae34325
9 changed files with 413 additions and 3 deletions
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3
msg_tool_macro/Cargo.toml
View File

@@ -6,6 +6,9 @@ edition = "2024"
[lib]
proc-macro = true
[features]
artemis-arc = []
[dependencies]
syn = { version = "2", features = ["full"] }
quote = "1"

77
msg_tool_macro/src/lib.rs
View File

@@ -72,7 +72,9 @@ pub fn struct_unpack_impl_for_num(item: TokenStream) -> TokenStream {
/// * `fstring = <len>` attribute can be used to specify a fixed string length for String fields.
/// * `fstring_pad = <u8>` attribute can be used to specify a padding byte for fixed strings. (Default is 0)
/// * `fvec = <len>` attribute can be used to specify a fixed vector length for Vec<_> fields.
#[proc_macro_derive(StructPack, attributes(skip_pack, fstring, fstring_pad, fvec))]
/// * `pstring(<len_type>)` attribute can be used to specify a packed string length for String fields, where `<len_type>` can be `u8`, `u16`, `u32`, or `u64`.
/// Length is read as a prefix before the string data.
#[proc_macro_derive(StructPack, attributes(skip_pack, fstring, fstring_pad, fvec, pstring))]
pub fn struct_pack_derive(input: TokenStream) -> TokenStream {
let a = syn::parse_macro_input!(input as PackStruct);
match a {
@@ -84,6 +86,7 @@ pub fn struct_pack_derive(input: TokenStream) -> TokenStream {
let mut fixed_string: Option<usize> = None;
let mut fixed_vec: Option<usize> = None;
let mut fstring_pad = 0u8; // Default padding byte
let mut pstring_type: Option<syn::Ident> = None;
for attr in &field.attrs {
let path = attr.path();
if path.is_ident("skip_pack") {
@@ -112,6 +115,23 @@ pub fn struct_pack_derive(input: TokenStream) -> TokenStream {
}
}
}
} else if path.is_ident("pstring") {
if let syn::Meta::List(list) = &attr.meta {
list.parse_nested_meta(|meta| {
if meta.path.is_ident("u8") {
pstring_type = Some(syn::Ident::new("u8", meta.path.span()));
} else if meta.path.is_ident("u16") {
pstring_type = Some(syn::Ident::new("u16", meta.path.span()));
} else if meta.path.is_ident("u32") {
pstring_type = Some(syn::Ident::new("u32", meta.path.span()));
} else if meta.path.is_ident("u64") {
pstring_type = Some(syn::Ident::new("u64", meta.path.span()));
} else {
return Err(meta.error("Expected u8, u16, or u32 for pstring"));
}
Ok(())
}).unwrap();
}
}
}
if skipped {
@@ -146,6 +166,14 @@ pub fn struct_pack_derive(input: TokenStream) -> TokenStream {
}
};
}
if let Some(pstring_type) = pstring_type {
let write_fn = syn::Ident::new(format!("write_{}", pstring_type).as_str(), pstring_type.span());
return quote::quote! {
let encoded = crate::utils::encoding::encode_string(encoding, &self.#field_name, true)?;
writer.#write_fn(encoded.len() as #pstring_type)?;
writer.write_all(&encoded)?;
};
}
}
}
if let Some(segment) = type_path.path.segments.first() {
@@ -321,7 +349,9 @@ pub fn struct_pack_derive(input: TokenStream) -> TokenStream {
/// * `fstring = <len>` attribute can be used to specify a fixed string length for String fields.
/// * `fstring_no_trim` attribute can be used to disable trimming of fixed strings.
/// * `fvec = <len>` attribute can be used to specify a fixed vector length for Vec<_> fields.
#[proc_macro_derive(StructUnpack, attributes(skip_unpack, fstring, fstring_no_trim, fvec))]
/// * `pstring(<number_type>)` attribute can be used to specify a packed string length for String fields, where `<number_type>` can be `u8`, `u16`, `u32` or `u64`.
/// length is read as a prefix before the string data.
#[proc_macro_derive(StructUnpack, attributes(skip_unpack, fstring, fstring_no_trim, fvec, pstring))]
pub fn struct_unpack_derive(input: TokenStream) -> TokenStream {
let sut = syn::parse_macro_input!(input as syn::ItemStruct);
let name = sut.ident;
@@ -333,6 +363,7 @@ pub fn struct_unpack_derive(input: TokenStream) -> TokenStream {
let mut fixed_string: Option<usize> = None;
let mut fstring_no_trim = false;
let mut fixed_vec: Option<usize> = None;
let mut pstring_type: Option<syn::Ident> = None;
for attr in &field.attrs {
let path = attr.path();
if path.is_ident("skip_unpack") {
@@ -355,6 +386,23 @@ pub fn struct_unpack_derive(input: TokenStream) -> TokenStream {
}
}
}
} else if path.is_ident("pstring") {
if let syn::Meta::List(list) = &attr.meta {
list.parse_nested_meta(|meta| {
if meta.path.is_ident("u8") {
pstring_type = Some(syn::Ident::new("u8", meta.path.span()));
} else if meta.path.is_ident("u16") {
pstring_type = Some(syn::Ident::new("u16", meta.path.span()));
} else if meta.path.is_ident("u32") {
pstring_type = Some(syn::Ident::new("u32", meta.path.span()));
} else if meta.path.is_ident("u64") {
pstring_type = Some(syn::Ident::new("u64", meta.path.span()));
} else {
return Err(meta.error("Expected u8, u16, or u32 for pstring"));
}
Ok(())
}).unwrap();
}
}
}
let field_name = match &field.ident {
@@ -382,6 +430,14 @@ pub fn struct_unpack_derive(input: TokenStream) -> TokenStream {
let #field_name = reader.read_fstring(#fixed_string, encoding, #trim)?;
};
}
if let Some(pstring_type) = pstring_type {
let read_fn = syn::Ident::new(format!("read_{}", pstring_type).as_str(), pstring_type.span());
return quote::quote! {
let len = reader.#read_fn()? as usize;
let #field_name = reader.read_exact_vec(len)?;
let #field_name = crate::utils::encoding::decode_to_string(encoding, &#field_name, true)?;
}
}
}
}
if let Some(segment) = type_path.path.segments.first() {
@@ -413,3 +469,20 @@ pub fn struct_unpack_derive(input: TokenStream) -> TokenStream {
};
output.into()
}
#[cfg(feature = "artemis-arc")]
#[proc_macro]
pub fn gen_artemis_arc_ext(_: TokenStream) -> TokenStream {
let mut exts = Vec::new();
exts.push(quote::quote! { "pfs" });
for i in 0..=999 {
let ext = format!("pfs.{:03}", i);
exts.push(quote::quote! { #ext });
}
let output = quote::quote! {
&[
#(#exts),*
]
};
output.into()
}