Method execute

src/commands/settings.rs:108–134

Executes the command.

(self)

impl SettingsCommand {
    /// Executes the command.
    pub fn execute(self) -> Result<()> {
        // Gather settings from the cranelift compiler builder
        let mut builder = wasmtime_cranelift::builder(None)?;
        let tunables = if let Some(target) = &self.target {
            let target = target_lexicon::Triple::from_str(target).map_err(|e| format_err!(e))?;
            let tunables = Tunables::default_for_target(&target)?;
            builder.target(target)?;
            tunables
        } else {
            Tunables::default_host()
        };

        builder.set_tunables(tunables)?;
        let mut settings = Settings::from_builder(&builder);

        // Add inferred settings if no target specified
        if self.target.is_none() {
            settings.infer(&builder)?;
        }

        // Print settings
        if self.json {
            self.print_json(settings)
        } else {
            self.print_human_readable(settings)
        }
    }

    fn print_json(self, settings: Settings) -> Result<()> {
        println!("{}", serde_json::to_string_pretty(&settings)?);