[package] name = "inner_procs" version = "0.1.0" edition = "2021" [lib] proc-macro = true [dependencies] syn = { version = "2.0", features = ["full"] } quote = "1.0" 目前各大 LSP 和编辑器对于过程宏的支持有限,如果遇到 LSP 宕机,直接重启编辑器即可。 case.1 编写你的第一个派...
[lib] proc-macro = true 1. 2. 3. 4. 5. 6. 7. 而编写过程宏,在stable版本里,我们需要借助三个crate: syn,这个是用来解析语法树(AST)的。各种语法构成 quote,解析语法树,生成rust代码,从而实现你想要的新功能。 proc_macro(std)和proc_macro2(3rd-party) 实现init的属性宏 函数的签名如下,这个格式...
在Rust中,编写过程宏,必须在Cargo.toml中设置[lib]proc-macro = true,这样就导致该库只能用于编写过程宏代码,无法在其他库中编写proc-macro代码,比如在其他包中无法使用use proc_macro::TokenStream;,这样就很难对宏代码进行单元测试。 所以第三方提供了proc-macro2这样的包,可以在任何库类型中编写过程宏代码逻辑,...
首先,过程宏库的Cargo.toml文件需要标明这是一个proc macro库,并且一般来说,会使用到如下三个库的依赖: [package]name="tool-derive"version="0.1.0"authors= ["piaoliu <[email protected]>"][lib]name="tool_derive"proc-macro=true[dependencies]proc-macro2="^0.4.6"quote="^0.6.3"syn="^0.14.2" ...
@@ -13,8 +13,8 @@ proc-macro = true [dependencies] proc-macro2 = { version = "1.0", features = ["span-locations"] } proc-macro-error = "1.0" syn = "1.0" proc-macro-error2 = "2.0" syn = "2.0" quote = "1.0" codespan-reporting = "0.11" pio = { path = "..", versi...
true }, autoimport: { enable: true }, autoself: { enable: true }, privateEditable: { enable: false } }, diagnostics: { enable: true, enableExperimental: true, disabled: [], remapPrefix: {}, warningsAsHint: [], warningsAsInfo: [] }, experimental: { procAttrMacros: true }, files...
ENRust是一门现代的、安全的系统级编程语言，它提供了丰富的元编程特性，其中属性宏（Attribute Macros）...
When I run the code above, nothing happens, even though I have manipulated the variables to ensure that the %If statement is true.To summarize, I am trying to achieve that if the end_date for data to be imported is not equal to or greater than year4, then don't import the file....
I have one exposure (exp), 4 dependants (dep) and 9 independants (indp) and i want to run proc genmod. the exposure will present with each independant to model each dependant. For example modeling the first dependant: proc genmod data=have; model dep1 = exp indp1 /d=nb;run; proc...
[package] name = "proc" version = "0.1.0" authors = [] edition = "2018" [lib] name = "hex" path = "src/hex.rs" proc-macro = true [[bin]] name = "bin" path = "src/main.rs" [dependencies] syn = "1.0" Then you create src/hex.rs, with the code you provided (just ...