120 lines
3.5 KiB
Rust
120 lines
3.5 KiB
Rust
//! #[constitutional]属性宏实现
|
|
|
|
use proc_macro::TokenStream;
|
|
use quote::quote;
|
|
use syn::{parse_macro_input, ItemFn, AttributeArgs, Meta, NestedMeta, Lit};
|
|
|
|
/// 解析#[constitutional]属性参数
|
|
pub struct ConstitutionalArgs {
|
|
pub clause: Option<String>,
|
|
pub check: Option<String>,
|
|
pub enforce: Option<String>,
|
|
}
|
|
|
|
impl ConstitutionalArgs {
|
|
pub fn from_args(args: AttributeArgs) -> Self {
|
|
let mut clause = None;
|
|
let mut check = None;
|
|
let mut enforce = None;
|
|
|
|
for arg in args {
|
|
if let NestedMeta::Meta(Meta::NameValue(nv)) = arg {
|
|
let path_str = nv.path.get_ident().map(|i| i.to_string());
|
|
|
|
match path_str.as_deref() {
|
|
Some("clause") => {
|
|
if let Lit::Str(lit) = &nv.lit {
|
|
clause = Some(lit.value());
|
|
}
|
|
}
|
|
Some("check") => {
|
|
if let Lit::Str(lit) = &nv.lit {
|
|
check = Some(lit.value());
|
|
}
|
|
}
|
|
Some("enforce") => {
|
|
if let Lit::Str(lit) = &nv.lit {
|
|
enforce = Some(lit.value());
|
|
}
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
}
|
|
|
|
Self {
|
|
clause,
|
|
check,
|
|
enforce,
|
|
}
|
|
}
|
|
}
|
|
|
|
/// 实现#[constitutional]属性宏
|
|
pub fn constitutional_impl(attr: TokenStream, item: TokenStream) -> TokenStream {
|
|
// 解析属性参数
|
|
let args = parse_macro_input!(attr as AttributeArgs);
|
|
let input = parse_macro_input!(item as ItemFn);
|
|
let parsed_args = ConstitutionalArgs::from_args(args);
|
|
|
|
let fn_vis = &input.vis;
|
|
let fn_sig = &input.sig;
|
|
let fn_block = &input.block;
|
|
let fn_name = &input.sig.ident;
|
|
|
|
// 生成宪法检查代码
|
|
let clause_check = if let Some(clause) = parsed_args.clause {
|
|
quote! {
|
|
log::trace!("Invoking constitutional clause: {}", #clause);
|
|
}
|
|
} else {
|
|
quote! {
|
|
log::trace!("Invoking constitutional function: {}", stringify!(#fn_name));
|
|
}
|
|
};
|
|
|
|
let constraint_check = if let Some(check_expr) = parsed_args.check {
|
|
quote! {
|
|
log::debug!("Checking constitutional constraint: {}", #check_expr);
|
|
// 实际的约束验证逻辑
|
|
// 在运行时检查宪法约束是否满足
|
|
// 实际应该：
|
|
// 1. 解析check_expr表达式
|
|
// 2. 评估约束条件
|
|
// 3. 如果不满足，抛出宪法异常
|
|
// 4. 记录约束检查结果
|
|
}
|
|
} else {
|
|
quote! {}
|
|
};
|
|
|
|
let enforcement = if let Some(enforcer) = parsed_args.enforce {
|
|
quote! {
|
|
log::debug!("Constitutional enforcer: {}", #enforcer);
|
|
// 实际的执行逻辑
|
|
// 在运行时执行宪法强制措施
|
|
// 实际应该：
|
|
// 1. 解析enforcer表达式
|
|
// 2. 调用宪法强制执行器
|
|
// 3. 如果执行失败，抛出异常
|
|
// 4. 记录执行结果和日志
|
|
}
|
|
} else {
|
|
quote! {}
|
|
};
|
|
|
|
// 生成最终代码
|
|
let expanded = quote! {
|
|
#fn_vis #fn_sig {
|
|
#clause_check
|
|
#constraint_check
|
|
#enforcement
|
|
|
|
// 原始函数体
|
|
#fn_block
|
|
}
|
|
};
|
|
|
|
TokenStream::from(expanded)
|
|
}
|