mech_interpreter/stdlib/access/
tuple.rs

1#[macro_use]
2use crate::stdlib::*;
3
4// Tuple Access --------------------------------------------------------------
5
6#[derive(Debug)]
7struct TupleAccessElement {
8  out: Value,
9}
10
11impl MechFunctionImpl for TupleAccessElement {
12  fn solve(&self) {
13    ()
14  }
15  fn out(&self) -> Value { self.out.clone() }
16  fn to_string(&self) -> String { format!("{:#?}", self) }
17}
18#[cfg(feature = "compiler")]
19impl MechFunctionCompiler for TupleAccessElement {
20  fn compile(&self, ctx: &mut CompileCtx) -> MResult<Register> {
21    todo!();
22  }
23}
24  
25pub struct TupleAccess {}
26impl NativeFunctionCompiler for TupleAccess{
27  fn compile(&self, arguments: &Vec<Value>) -> MResult<Box<dyn MechFunction>> {
28    if arguments.len() < 2 {
29      return Err(MechError{file: file!().to_string(), tokens: vec![], msg: "".to_string(), id: line!(), kind: MechErrorKind::IncorrectNumberOfArguments});
30    }
31    let ix = &arguments[1];
32    let src = &arguments[0];
33    match (src,ix) {
34      (Value::Tuple(tpl), Value::Index(ix)) => {
35        let ix_brrw = ix.borrow();
36        if *ix_brrw > tpl.elements.len() || *ix_brrw < 1 {
37            return Err(MechError{file: file!().to_string(), tokens: vec![], msg: "".to_string(), id: line!(), kind: MechErrorKind::IndexOutOfBounds});
38        }
39        let element = tpl.elements[*ix_brrw - 1].clone();
40        let new_fxn = TupleAccessElement{ out: *element };
41        Ok(Box::new(new_fxn))
42      },
43      (Value::MutableReference(tpl), Value::Index(ix)) => {
44        match &*tpl.borrow() {
45          Value::Tuple(ref tpl) => {
46            let ix_brrw = ix.borrow();
47            if *ix_brrw > tpl.elements.len() || *ix_brrw < 1 {
48              return Err(MechError{file: file!().to_string(), tokens: vec![], msg: "".to_string(), id: line!(), kind: MechErrorKind::IndexOutOfBounds});
49            }
50            let element = tpl.elements[*ix_brrw - 1].clone();
51            let new_fxn = TupleAccessElement{ out: *element };
52            Ok(Box::new(new_fxn))
53          },
54          _ => Err(MechError{file: file!().to_string(), tokens: vec![], msg: "".to_string(), id: line!(), kind: MechErrorKind::UnhandledFunctionArgumentKind }),
55        }
56      },
57      _ => todo!(),
58    }
59  }
60}
mech_interpreter/stdlib/access/tuple.rs

mech_interpreter/stdlib/access/
tuple.rs
