compiler/rustc_session/src/utils.rs

   1 use crate::session::Session;
   2 use rustc_data_structures::profiling::VerboseTimingGuard;
   3 use std::path::{Path, PathBuf};
   4
   5 impl Session {
   6     pub fn timer<'a>(&'a self, what: &'static str) -> VerboseTimingGuard<'a> {
   7         self.prof.verbose_generic_activity(what)
   8     }
   9     pub fn time<R>(&self, what: &'static str, f: impl FnOnce() -> R) -> R {
  10         self.prof.verbose_generic_activity(what).run(f)
  11     }
  12 }
  13
  14 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Encodable, Decodable)]
  15 #[derive(HashStable_Generic)]
  16 pub enum NativeLibKind {
  17     /// Static library (e.g. `libfoo.a` on Linux or `foo.lib` on Windows/MSVC)
  18     Static {
  19         /// Whether to bundle objects from static library into produced rlib
  20         bundle: Option<bool>,
  21         /// Whether to link static library without throwing any object files away
  22         whole_archive: Option<bool>,
  23     },
  24     /// Dynamic library (e.g. `libfoo.so` on Linux)
  25     /// or an import library corresponding to a dynamic library (e.g. `foo.lib` on Windows/MSVC).
  26     Dylib {
  27         /// Whether the dynamic library will be linked only if it satisfies some undefined symbols
  28         as_needed: Option<bool>,
  29     },
  30     /// Dynamic library (e.g. `foo.dll` on Windows) without a corresponding import library.
  31     RawDylib,
  32     /// A macOS-specific kind of dynamic libraries.
  33     Framework {
  34         /// Whether the framework will be linked only if it satisfies some undefined symbols
  35         as_needed: Option<bool>,
  36     },
  37     /// Argument which is passed to linker, relative order with libraries and other arguments
  38     /// is preserved
  39     LinkArg,
  40     /// The library kind wasn't specified, `Dylib` is currently used as a default.
  41     Unspecified,
  42 }
  43
  44 impl NativeLibKind {
  45     pub fn has_modifiers(&self) -> bool {
  46         match self {
  47             NativeLibKind::Static { bundle, whole_archive } => {
  48                 bundle.is_some() || whole_archive.is_some()
  49             }
  50             NativeLibKind::Dylib { as_needed } | NativeLibKind::Framework { as_needed } => {
  51                 as_needed.is_some()
  52             }
  53             NativeLibKind::RawDylib | NativeLibKind::Unspecified | NativeLibKind::LinkArg => false,
  54         }
  55     }
  56 }
  57
  58 #[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Encodable, Decodable)]
  59 #[derive(HashStable_Generic)]
  60 pub struct NativeLib {
  61     pub name: String,
  62     pub new_name: Option<String>,
  63     pub kind: NativeLibKind,
  64     pub verbatim: Option<bool>,
  65 }
  66
  67 impl NativeLib {
  68     pub fn has_modifiers(&self) -> bool {
  69         self.verbatim.is_some() || self.kind.has_modifiers()
  70     }
  71 }
  72
  73 /// A path that has been canonicalized along with its original, non-canonicalized form
  74 #[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
  75 pub struct CanonicalizedPath {
  76     // Optional since canonicalization can sometimes fail
  77     canonicalized: Option<PathBuf>,
  78     original: PathBuf,
  79 }
  80
  81 impl CanonicalizedPath {
  82     pub fn new(path: &Path) -> Self {
  83         Self { original: path.to_owned(), canonicalized: std::fs::canonicalize(path).ok() }
  84     }
  85
  86     pub fn canonicalized(&self) -> &PathBuf {
  87         self.canonicalized.as_ref().unwrap_or(self.original())
  88     }
  89
  90     pub fn original(&self) -> &PathBuf {
  91         &self.original
  92     }
  93 }