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/*!
Backend for [WGSL][wgsl] (WebGPU Shading Language).
*/
mod writer;
use thiserror::Error;
pub use writer::{Writer, WriterFlags};
#[derive(Error, Debug)]
pub enum Error {
#[error(transparent)]
FmtError(#[from] std::fmt::Error),
#[error("{0}")]
Custom(String),
#[error("{0}")]
Unimplemented(String), // TODO: Error used only during development
#[error("Unsupported math function: {0:?}")]
UnsupportedMathFunction(crate::MathFunction),
#[error("Unsupported relational function: {0:?}")]
UnsupportedRelationalFunction(crate::RelationalFunction),
}
pub fn write_string(
module: &crate::Module,
info: &crate::valid::ModuleInfo,
flags: WriterFlags,
) -> Result<String, Error> {
let mut w = Writer::new(String::new(), flags);
w.write(module, info)?;
let output = w.finish();
Ok(output)
}
impl crate::AtomicFunction {
const fn to_wgsl(self) -> &'static str {
match self {
Self::Add => "Add",
Self::Subtract => "Sub",
Self::And => "And",
Self::InclusiveOr => "Or",
Self::ExclusiveOr => "Xor",
Self::Min => "Min",
Self::Max => "Max",
Self::Exchange { compare: None } => "Exchange",
Self::Exchange { .. } => "CompareExchangeWeak",
}
}
}