refactor!: replace pack! macros with derive-based pipeline types

Remove the `pack!`, `pack_err!`, `pack_structural!`, and
`pack_err_structural!` macros, replacing all pipeline type definitions
with `#[derive(Grouped)]` and `#[derive(Grouped, Wrap)]` attributes.
This changes the generated struct shape from named-field structs with an
`inner` field to tuple structs accessed via `.0`, and removes the
auto-generated `name` and `info` fields from error types.

1 files changed, 0 insertions, 121 deletions

diff --git a/mingling_macros/src/func/pack_err_structural.rs b/mingling_macros/src/func/pack_err_structural.rs
deleted file mode 100644
index 950b8dc..0000000
--- a/mingling_macros/src/func/pack_err_structural.rs
+++ /dev/null
@@ -1,121 +0,0 @@
-// Doc Not Optimize
-use just_fmt::snake_case;
-use proc_macro::TokenStream;
-use quote::quote;
-use syn::{Ident, Token, Type, parse_macro_input};
-
-/// `pack_err_structural!` — like `pack_err!` but also marks the type as
-/// supporting structured output via `StructuralData`.
-pub(crate) fn pack_err_structural(input: TokenStream) -> TokenStream {
-    let parsed = parse_macro_input!(input as PackErrInput);
-
-    let type_name = match &parsed {
-        PackErrInput::Simple { type_name } | PackErrInput::Typed { type_name, .. } => {
-            type_name.clone()
-        }
-    };
-
-    // Register in STRUCTURED_TYPES
-    let type_name_str = type_name.to_string();
-    crate::get_global_set(&crate::STRUCTURED_TYPES)
-        .lock()
-        .unwrap()
-        .insert(type_name_str);
-
-    let structural_data = quote! {
-        impl ::mingling::__private::StructuralDataSealed<crate::ThisProgram> for #type_name {}
-        impl ::mingling::__private::StructuralData<crate::ThisProgram> for #type_name {}
-    };
-
-    // Generate the struct + impls (same as pack_err! but with Serialize derive + sealed)
-    match parsed {
-        PackErrInput::Simple { type_name } => {
-            let name_str = type_name.to_string();
-            let snake_name = snake_case!(&name_str);
-
-            let expanded = quote! {
-                #[derive(::mingling::Grouped, ::serde::Serialize)]
-                pub struct #type_name {
-                    /// The snake_case name of this error, automatically set at compile time.
-                    pub name: String,
-                }
-
-                impl ::std::default::Default for #type_name {
-                    fn default() -> Self {
-                        Self {
-                            name: #snake_name.into(),
-                        }
-                    }
-                }
-
-                ::mingling::macros::register_type!(#type_name);
-
-                #structural_data
-            };
-
-            expanded.into()
-        }
-        PackErrInput::Typed {
-            type_name,
-            inner_type,
-        } => {
-            let name_str = type_name.to_string();
-            let snake_name = snake_case!(&name_str);
-
-            let expanded = quote! {
-                #[derive(::mingling::Grouped, ::serde::Serialize)]
-                pub struct #type_name {
-                    /// The snake_case name of this error, automatically set at compile time.
-                    pub name: String,
-                    /// Additional context info for this error.
-                    pub info: #inner_type,
-                }
-
-                impl #type_name {
-                    /// Creates a new error with the given info.
-                    /// The `name` field is automatically set to the snake_case of the struct name.
-                    pub fn new(info: #inner_type) -> Self {
-                        Self {
-                            name: #snake_name.into(),
-                            info,
-                        }
-                    }
-                }
-
-                ::mingling::macros::register_type!(#type_name);
-
-                #structural_data
-            };
-
-            expanded.into()
-        }
-    }
-}
-
-// Re-use pack_err's input parser
-enum PackErrInput {
-    Simple {
-        type_name: Ident,
-    },
-    Typed {
-        type_name: Ident,
-        inner_type: Box<Type>,
-    },
-}
-
-impl syn::parse::Parse for PackErrInput {
-    fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
-        let type_name: Ident = input.parse()?;
-
-        if input.peek(Token![=]) {
-            input.parse::<Token![=]>()?;
-            let inner_type: Type = input.parse()?;
-            Ok(Self::Typed {
-                type_name,
-                inner_type: Box::new(inner_type),
-            })
-        } else {
-            Ok(Self::Simple { type_name })
-        }
-    }
-}