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feat(tvix/eval): implement unary negation operator

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Change-Id: I5d012cc073e55d79d7b34b88283aab3164864293
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6075
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
This commit is contained in:
Vincent Ambo 2022-08-08 02:32:07 +03:00 • committed by tazjin
parent d35ecc0caf
commit 72be759e1e
3 changed files with 35 additions and 1 deletions
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18
tvix/eval/src/compiler.rs
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@ -31,6 +31,11 @@ impl Compiler {
self.compile_binop(op)
}
rnix::SyntaxKind::NODE_UNARY_OP => {
let op = rnix::types::UnaryOp::cast(node).expect("TODO: (should not be possible)");
self.compile_unary_op(op)
}
kind => {
println!("visiting unsupported node: {:?}", kind);
Ok(())
@ -77,6 +82,19 @@ impl Compiler {
self.chunk.add_op(opcode);
Ok(())
}
fn compile_unary_op(&mut self, op: rnix::types::UnaryOp) -> EvalResult<()> {
self.compile(op.value().unwrap())?;
use rnix::types::UnaryOpKind;
let opcode = match op.operator() {
UnaryOpKind::Invert => OpCode::OpInvert,
UnaryOpKind::Negate => OpCode::OpNegate,
};
self.chunk.add_op(opcode);
Ok(())
}
}
pub fn compile(ast: rnix::AST) -> EvalResult<Chunk> {