src/libstd/sys/wasm/process.rs

   1 use crate::ffi::OsStr;
   2 use crate::fmt;
   3 use crate::io;
   4 use crate::sys::fs::File;
   5 use crate::sys::pipe::AnonPipe;
   6 use crate::sys::{unsupported, Void};
   7 use crate::sys_common::process::CommandEnv;
   8
   9 pub use crate::ffi::OsString as EnvKey;
  10
  11 ////////////////////////////////////////////////////////////////////////////////
  12 // Command
  13 ////////////////////////////////////////////////////////////////////////////////
  14
  15 pub struct Command {
  16     env: CommandEnv,
  17 }
  18
  19 // passed back to std::process with the pipes connected to the child, if any
  20 // were requested
  21 pub struct StdioPipes {
  22     pub stdin: Option<AnonPipe>,
  23     pub stdout: Option<AnonPipe>,
  24     pub stderr: Option<AnonPipe>,
  25 }
  26
  27 pub enum Stdio {
  28     Inherit,
  29     Null,
  30     MakePipe,
  31 }
  32
  33 impl Command {
  34     pub fn new(_program: &OsStr) -> Command {
  35         Command { env: Default::default() }
  36     }
  37
  38     pub fn arg(&mut self, _arg: &OsStr) {}
  39
  40     pub fn env_mut(&mut self) -> &mut CommandEnv {
  41         &mut self.env
  42     }
  43
  44     pub fn cwd(&mut self, _dir: &OsStr) {}
  45
  46     pub fn stdin(&mut self, _stdin: Stdio) {}
  47
  48     pub fn stdout(&mut self, _stdout: Stdio) {}
  49
  50     pub fn stderr(&mut self, _stderr: Stdio) {}
  51
  52     pub fn spawn(
  53         &mut self,
  54         _default: Stdio,
  55         _needs_stdin: bool,
  56     ) -> io::Result<(Process, StdioPipes)> {
  57         unsupported()
  58     }
  59 }
  60
  61 impl From<AnonPipe> for Stdio {
  62     fn from(pipe: AnonPipe) -> Stdio {
  63         pipe.diverge()
  64     }
  65 }
  66
  67 impl From<File> for Stdio {
  68     fn from(file: File) -> Stdio {
  69         file.diverge()
  70     }
  71 }
  72
  73 impl fmt::Debug for Command {
  74     fn fmt(&self, _f: &mut fmt::Formatter<'_>) -> fmt::Result {
  75         Ok(())
  76     }
  77 }
  78
  79 pub struct ExitStatus(Void);
  80
  81 impl ExitStatus {
  82     pub fn success(&self) -> bool {
  83         match self.0 {}
  84     }
  85
  86     pub fn code(&self) -> Option<i32> {
  87         match self.0 {}
  88     }
  89 }
  90
  91 impl Clone for ExitStatus {
  92     fn clone(&self) -> ExitStatus {
  93         match self.0 {}
  94     }
  95 }
  96
  97 impl Copy for ExitStatus {}
  98
  99 impl PartialEq for ExitStatus {
 100     fn eq(&self, _other: &ExitStatus) -> bool {
 101         match self.0 {}
 102     }
 103 }
 104
 105 impl Eq for ExitStatus {}
 106
 107 impl fmt::Debug for ExitStatus {
 108     fn fmt(&self, _f: &mut fmt::Formatter<'_>) -> fmt::Result {
 109         match self.0 {}
 110     }
 111 }
 112
 113 impl fmt::Display for ExitStatus {
 114     fn fmt(&self, _f: &mut fmt::Formatter<'_>) -> fmt::Result {
 115         match self.0 {}
 116     }
 117 }
 118
 119 #[derive(PartialEq, Eq, Clone, Copy, Debug)]
 120 pub struct ExitCode(bool);
 121
 122 impl ExitCode {
 123     pub const SUCCESS: ExitCode = ExitCode(false);
 124     pub const FAILURE: ExitCode = ExitCode(true);
 125
 126     pub fn as_i32(&self) -> i32 {
 127         self.0 as i32
 128     }
 129 }
 130
 131 pub struct Process(Void);
 132
 133 impl Process {
 134     pub fn id(&self) -> u32 {
 135         match self.0 {}
 136     }
 137
 138     pub fn kill(&mut self) -> io::Result<()> {
 139         match self.0 {}
 140     }
 141
 142     pub fn wait(&mut self) -> io::Result<ExitStatus> {
 143         match self.0 {}
 144     }
 145
 146     pub fn try_wait(&mut self) -> io::Result<Option<ExitStatus>> {
 147         match self.0 {}
 148     }
 149 }