Method from_str

crates/rustc_codegen_spirv/src/target.rs:111–137

(target: &str)

    type Err = InvalidTarget;

    fn from_str(target: &str) -> Result<Self, Self::Err> {
        let mut iter = target.split('-');
        let error = || InvalidTarget(target.into());

        if iter.next().map_or(true, |arch| arch != ARCH) {
            return Err(error());
        }

        let vendor = iter.next().map(From::from).ok_or_else(error)?;

        let env = iter
            .next()
            .and_then(|env| env.parse().ok())
            .ok_or_else(error)?;

        if iter.next().is_some() {
            return Err(error());
        }

        let result = Self { env, vendor };

        if result.memory_model() == MemoryModel::OpenCL {
            return Err(error());
        }

        Ok(result)
    }
}

impl std::fmt::Display for SpirvTarget {