trunk 0.21.14

Build, bundle & ship your Rust WASM application to the web.
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use anyhow::bail;
use std::str::FromStr;

/// Different optimization levels that can be configured with `wasm-opt`.
#[derive(PartialEq, Eq)]
pub enum WasmOptLevel {
    /// Default optimization passes.
    Default,
    /// No optimization passes, skipping the wasp-opt step.
    Off,
    /// Run quick & useful optimizations. useful for iteration testing.
    One,
    /// Most optimizations, generally gets most performance.
    Two,
    /// Spend potentially a lot of time optimizing.
    Three,
    /// Also flatten the IR, which can take a lot more time and memory, but is useful on more
    /// nested / complex / less-optimized input.
    Four,
    /// Default optimizations, focus on code size.
    S,
    /// Default optimizations, super-focusing on code size.
    Z,
}

impl FromStr for WasmOptLevel {
    type Err = anyhow::Error;

    fn from_str(s: &str) -> anyhow::Result<Self, Self::Err> {
        Ok(match s {
            "" => Self::Default,
            "0" => Self::Off,
            "1" => Self::One,
            "2" => Self::Two,
            "3" => Self::Three,
            "4" => Self::Four,
            "s" | "S" => Self::S,
            "z" | "Z" => Self::Z,
            _ => bail!("unknown wasm-opt level `{}`", s),
        })
    }
}

impl AsRef<str> for WasmOptLevel {
    fn as_ref(&self) -> &str {
        match self {
            Self::Default => "",
            Self::Off => "0",
            Self::One => "1",
            Self::Two => "2",
            Self::Three => "3",
            Self::Four => "4",
            Self::S => "s",
            Self::Z => "z",
        }
    }
}

impl Default for WasmOptLevel {
    fn default() -> Self {
        Self::Default
    }
}