crates/nonstick: libpam-sys/libpam-sys-impls/src/lib.rs annotate

author	Paul Fisher <paul@pfish.zone>
date	Sat, 28 Jun 2025 00:34:45 -0400
parents
children	bb465393621f

rev	line source
108 e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	1 use proc_macro as pm;
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	2 use proc_macro2::{Delimiter, Group, Literal, Span, TokenStream, TokenTree};
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	3 use quote::{format_ident, quote};
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	4 use std::fmt::Display;
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	5 use syn::Lit;
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	6
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	7 /// A `cfg`-like attribute macro for code specific to one PAM implementation.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	8 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	9 /// Different versions of PAM export different functions and have some
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	10 /// meaningful internal implementation differences, like the way `pam_conv`
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	11 /// is handled (see [the Linux-PAM man page for details][man7]).
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	12 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	13 /// ```
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	14 /// # use libpam_sys_impls::cfg_pam_impl;
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	15 /// #[cfg_pam_impl("illumos")]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	16 /// fn do_something() { /* illumos-only code */ }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	17 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	18 /// #[cfg_pam_impl(not("illumos"))]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	19 /// fn do_something() { /* non-illumos code */ }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	20 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	21 /// #[cfg_pam_impl(any("linux-pam", "openpam"))]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	22 /// fn do_something_else() { /* Linux-PAM or OpenPAM */ }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	23 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	24 /// #[cfg_pam_impl(not(any("illumos", "openpam")))]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	25 /// fn do_a_third_thing() { /* Neither Illumos nor OpenPAM */ }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	26 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	27 /// #[cfg_pam_impl(any())]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	28 /// fn this_will_never_build() { /* why would you do this? */ }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	29 /// ```
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	30 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	31 /// [man7]: https://man7.org/linux/man-pages/man3/pam_conv.3.html
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	32 #[proc_macro_attribute]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	33 pub fn cfg_pam_impl(attr: pm::TokenStream, item: pm::TokenStream) -> pm::TokenStream {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	34 eprintln!("Got TokenStream: {:?}", attr);
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	35 Predicate::parse(attr.into(), None)
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	36 .map(\|p\| {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	37 if p.matches(pam_impl_str()) {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	38 item
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	39 } else {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	40 pm::TokenStream::new()
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	41 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	42 })
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	43 .unwrap_or_else(\|e\| syn::Error::from(e).into_compile_error().into())
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	44 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	45
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	46 #[derive(Debug)]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	47 enum Error {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	48 WithSpan(syn::Error),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	49 WithoutSpan(String),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	50 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	51
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	52 impl Error {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	53 fn new<D: Display>(span: Option<Span>, msg: D) -> Self {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	54 match span {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	55 Some(span) => syn::Error::new(span, msg).into(),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	56 None => Self::WithoutSpan(msg.to_string()),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	57 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	58 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	59 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	60
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	61 impl From<syn::Error> for Error {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	62 fn from(value: syn::Error) -> Self {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	63 Self::WithSpan(value)
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	64 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	65 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	66
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	67 impl From<String> for Error {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	68 fn from(value: String) -> Self {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	69 Self::WithoutSpan(value)
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	70 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	71 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	72
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	73 impl From<Error> for syn::Error {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	74 fn from(value: Error) -> Self {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	75 match value {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	76 Error::WithSpan(e) => e,
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	77 Error::WithoutSpan(s) => syn::Error::new(Span::call_site(), s),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	78 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	79 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	80 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	81
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	82 type Result<T> = std::result::Result<T, Error>;
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	83
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	84 #[derive(Debug)]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	85 enum Predicate {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	86 Literal(String),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	87 Any(Vec<String>),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	88 Not(Box<Predicate>),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	89 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	90
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	91 impl Predicate {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	92 fn matches(&self, value: &str) -> bool {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	93 match self {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	94 Self::Literal(literal) => value == literal,
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	95 Self::Not(pred) => !pred.matches(value),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	96 Self::Any(options) => {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	97 options.iter().any(\|s\| s == value)
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	98 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	99 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	100 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	101
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	102 fn parse(stream: TokenStream, span: Option<Span>) -> Result<Self> {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	103 let mut iter = stream.into_iter();
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	104 let pred = match iter.next() {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	105 None => return error(span, "a PAM implementation predicate must be provided"),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	106 Some(TokenTree::Literal(lit)) => Self::Literal(Self::string_lit(lit)?),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	107 Some(TokenTree::Ident(id)) => {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	108 let next = Self::parens(iter.next(), span)?;
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	109 match id.to_string().as_str() {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	110 "not" => Self::Not(Box::new(Self::parse(next.stream(), Some(next.span()))?)),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	111 "any" => Self::Any(Self::parse_any(next)?),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	112 _ => return unexpected(&id.into(), "\"not\" or \"any\""),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	113 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	114 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	115 Some(other) => return unexpected(&other, "\"not\", \"any\", or a string literal"),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	116 };
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	117 // Check for anything after. We only allow a comma and nothing else.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	118 if maybe_comma(iter.next())? {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	119 if let Some(next) = iter.next() {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	120 return unexpected(&next, "nothing");
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	121 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	122 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	123 Ok(pred)
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	124 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	125
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	126 fn parens(tree: Option<TokenTree>, mut span: Option<Span>) -> Result<Group> {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	127 if let Some(tree) = tree {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	128 span = Some(tree.span());
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	129 if let TokenTree::Group(g) = tree {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	130 if g.delimiter() == Delimiter::Parenthesis {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	131 return Ok(g);
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	132 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	133 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	134 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	135 Err(Error::new(span, "expected function-call syntax"))
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	136 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	137
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	138 fn parse_any(g: Group) -> Result<Vec<String>> {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	139 let mut output = Vec::new();
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	140 let mut iter = g.stream().into_iter();
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	141 loop {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	142 match iter.next() {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	143 None => break,
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	144 Some(TokenTree::Literal(lit)) => {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	145 output.push(Self::string_lit(lit)?);
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	146 if !maybe_comma(iter.next())? {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	147 break
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	148 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	149 },
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	150 Some(other) => return unexpected(&other, "string literal"),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	151 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	152 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	153 Ok(output)
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	154 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	155
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	156 fn string_lit(lit: Literal) -> Result<String> {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	157 let tree: TokenTree = lit.clone().into();
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	158 match syn::parse2::<Lit>(tree.into())? {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	159 Lit::Str(s) => Ok(s.value()),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	160 _ => unexpected(&lit.into(), "string literal"),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	161 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	162 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	163 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	164
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	165 fn error<T, M: Display>(span: Option<Span>, message: M) -> Result<T> {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	166 Err(Error::new(span, message))
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	167 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	168
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	169 fn unexpected<T>(tree: &TokenTree, want: &str) -> Result<T> {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	170 error(
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	171 Some(tree.span()),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	172 format!("expected {want}; got unexpected token {tree}"),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	173 )
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	174 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	175
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	176 fn maybe_comma(next: Option<TokenTree>) -> Result<bool> {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	177 match next {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	178 None => Ok(false),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	179 Some(tree) => {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	180 if let TokenTree::Punct(p) = &tree {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	181 if p.as_char() == ',' {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	182 return Ok(true);
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	183 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	184 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	185 unexpected(&tree, "',' or ')'")
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	186 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	187 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	188 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	189
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	190 /// A proc macro that outputs the PAM implementation macro and const.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	191 #[proc_macro]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	192 pub fn pam_impl_enum(data: pm::TokenStream) -> pm::TokenStream {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	193 if !data.is_empty() { panic!("unexpected stuff in pam_impl_enum!()") }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	194
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	195 let variant = format_ident!("{}", pam_impl_str());
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	196
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	197 quote!(
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	198 /// The PAM implementations supported by `libpam-sys`.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	199 #[non_exhaustive]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	200 #[derive(Clone, Copy, Debug, PartialEq)]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	201 pub enum PamImpl {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	202 /// [Linux-PAM] is provided by most Linux implementations.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	203 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	204 /// [Linux-PAM]: https://github.com/linux-pam/linux-pam
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	205 LinuxPam,
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	206 /// [OpenPAM] is used by most BSD distributions, including Mac OS X.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	207 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	208 /// [OpenPAM]: https://git.des.dev/OpenPAM/OpenPAM
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	209 OpenPam,
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	210 /// [Illumos PAM] is used on Illumos and Solaris systems.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	211 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	212 /// [Illumos PAM]: https://code.illumos.org/plugins/gitiles/illumos-gate/+/refs/heads/master/usr/src/lib/libpam
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	213 Illumos,
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	214 /// Only the functionality in [the PAM spec],
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	215 /// with OpenPAM/Illumos constants.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	216 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	217 /// [the PAM spec]: https://pubs.opengroup.org/onlinepubs/8329799/toc.htm
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	218 MinimalOpenPam,
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	219 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	220
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	221 #[doc = concat!("This version of libpam-sys was built for ", stringify!(#variant), ".")]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	222 pub const LIBPAMSYS_IMPL: PamImpl = PamImpl::#variant;
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	223 ).into()
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	224 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	225
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	226 /// String literal of the name of the PAM implementation this was built for.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	227 ///
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	228 /// The value is the string value of `libpamsys::PamImpl`.
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	229 #[proc_macro]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	230 pub fn pam_impl_name(data: pm::TokenStream) -> pm::TokenStream {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	231 if !data.is_empty() {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	232 panic!("pam_impl_name! does not take any input")
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	233 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	234 pm::TokenTree::Literal(pm::Literal::string(pam_impl_str())).into()
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	235 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	236
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	237 fn pam_impl_str() -> &'static str {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	238 env!("LIBPAMSYS_IMPL")
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	239 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	240
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	241 #[cfg(test)]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	242 mod tests {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	243 use super::*;
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	244
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	245 fn parse(tree: TokenStream) -> Predicate {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	246 Predicate::parse(tree, None).unwrap()
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	247 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	248
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	249 #[test]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	250 fn test_parse() {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	251 macro_rules! cases {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	252 ($(($($i:tt))), $(,)?) => { [ $( quote!($($i)) ), ] };
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	253 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	254
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	255 let good = cases![
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	256 ("this"),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	257 (any("this", "that", "the other")),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	258 (not("the bees")),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	259 (not(any("of", "those"))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	260 (not(not("saying it"))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	261 (any("trailing", "comma", "allowed",)),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	262 ("even on a singleton",),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	263 (not("forbidden here either",)),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	264 (not(not(any("this", "is", "stupid"),),),),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	265 ];
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	266 for tree in good {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	267 parse(tree);
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	268 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	269 let bad = cases![
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	270 (),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	271 (wrong),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	272 (wheel::of::fortune),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	273 ("invalid", "syntax"),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	274 (any(any)),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	275 (any),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	276 (not),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	277 (not(any)),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	278 ("too many commas",,),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	279 (any("too", "many",, "commas")),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	280 (not("the commas",,,)),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	281 (9),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	282 (any("123", 8)),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	283 (not(666)),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	284 ];
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	285 for tree in bad {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	286 Predicate::parse(tree, None).unwrap_err();
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	287 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	288 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	289
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	290 #[test]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	291 fn test_match() {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	292 macro_rules! cases {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	293 ($(($e:expr, ($($i:tt)))), $(,)?) => {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	294 [$(($e, quote!($($i)))),]
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	295 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	296 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	297 let matching = cases![
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	298 ("Illumos", (any("Illumos", "OpenPam"))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	299 ("LinuxPam", (not("OpenPam"))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	300 ("Other", (not(any("This", "That")))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	301 ("OpenPam", (not(not("OpenPam")))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	302 ("Anything", (not(any()))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	303 ];
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	304 for (good, tree) in matching {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	305 let pred = parse(tree);
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	306 assert!(pred.matches(good))
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	307 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	308
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	309 let nonmatching = cases![
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	310 ("LinuxPam", (not("LinuxPam"))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	311 ("Illumos", ("LinuxPam")),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	312 ("OpenPam", (any("LinuxPam", "Illumos"))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	313 ("One", (not(any("One", "Another")))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	314 ("Negatory", (not(not("Affirmative")))),
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	315 ];
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	316 for (bad, tree) in nonmatching {
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	317 let pred = parse(tree);
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	318 assert!(!pred.matches(bad))
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	319 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	320 }
e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls. Paul Fisher <paul@pfish.zone> parents: diff changeset	321 }

108

e97534be35e3 Make some proc macros for doing cfg-like stuff for PAM impls.