43 lines
978 B
Rust
43 lines
978 B
Rust
use lunar_wave_vm as lwvm;
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#[test]
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fn embedding () {
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use lwvm::{
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State,
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Value,
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};
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let src = br#"
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return host_lib.add (14, 12)
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"#;
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fn host_add (l: &mut State, num_args: usize) -> usize {
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assert_eq! (num_args, 2);
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let a = l.reg (0).as_int ().unwrap ();
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let b = l.reg (1).as_int ().unwrap ();
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*l.reg_mut (0) = Value::from (a + b + 1993);
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1
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}
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let bytecode = lwvm::compile_bytecode (src.to_vec ());
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let mut rdr = std::io::Cursor::new (bytecode);
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let chunk = lwvm::parse_chunk (&mut rdr).unwrap ();
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let host_lib = [
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("add", Value::RsFunc (host_add)),
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].into_iter ().map (|(k, v)| (k.to_string (), v));
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let env = [
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("host_lib", Value::from_iter (host_lib.into_iter ())),
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].into_iter ().map (|(k, v)| (k.to_string (), v));
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let upvalues = vec! [
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Value::from_iter (env.into_iter ()),
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];
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let mut vm = State::new (chunk, upvalues);
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let output = vm.execute_chunk (&vec! []).unwrap ();
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assert_eq! (output, vec! [Value::from (2019)]);
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}
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