rl_lang/interpreter/stdlib/result/
result_unwrap.rs

1use crate::{
2    interpreter::{evaluator::Evaluator, stdlib::common::check_arity, values::Value},
3    utils::{errors::Error, span::Span},
4};
5
6pub fn std_unwrap(eval: &mut Evaluator, args: Vec<Value>, span: Span) -> Result<Value, Error> {
7    check_arity(&args, 1, "result_unwrap", span)?;
8    match &args[0] {
9        Value::Ok(inner) => Ok(*inner.clone()),
10        Value::Err(v) => Err(eval.err(format!("result_unwrap: called on Err({})", v), span)),
11        other => Err(eval.err(
12            format!("result_unwrap: expected result, got {}", other.type_name()),
13            span,
14        )),
15    }
16}
17
18pub fn std_unwrap_err(eval: &mut Evaluator, args: Vec<Value>, span: Span) -> Result<Value, Error> {
19    check_arity(&args, 1, "result_unwrap_err", span)?;
20    match &args[0] {
21        Value::Err(inner) => Ok(*inner.clone()),
22        Value::Ok(v) => Err(eval.err(format!("result_unwrap_err: called on ok({})", v), span)),
23        other => Err(eval.err(
24            format!(
25                "result_unwrap_err: expected result, got {}",
26                other.type_name()
27            ),
28            span,
29        )),
30    }
31}
32
33pub fn std_unwrap_or(eval: &mut Evaluator, args: Vec<Value>, span: Span) -> Result<Value, Error> {
34    check_arity(&args, 2, "result_unwrap_or", span)?;
35    match &args[0] {
36        Value::Ok(inner) => Ok(*inner.clone()),
37        Value::Err(_) => Ok(args[1].clone()),
38        other => Err(eval.err(
39            format!(
40                "result_unwrap_or: expected result, got {}",
41                other.type_name()
42            ),
43            span,
44        )),
45    }
46}
rl_lang/interpreter/stdlib/result/result_unwrap.rs

rl_lang/interpreter/stdlib/result/
result_unwrap.rs
