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dust/dust-lang/tests/functions.rs

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3.4 KiB
Rust
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use dust_lang::*;
#[test]
fn function() {
let source = "fn(a: int, b: int) -> int { a + b }";
assert_eq!(
run(source),
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Ok(Some(ConcreteValue::Function(Chunk::with_data(
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None,
vec![
(Instruction::add(2, 0, 1), Span(30, 31)),
(Instruction::r#return(true), Span(35, 35)),
],
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vec![ConcreteValue::string("a"), ConcreteValue::string("b"),],
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vec![
Local::new(0, Type::Integer, false, Scope::default()),
Local::new(1, Type::Integer, false, Scope::default())
]
))))
);
}
#[test]
fn function_call() {
let source = "fn(a: int, b: int) -> int { a + b }(1, 2)";
assert_eq!(
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compile(source),
Ok(Chunk::with_data(
None,
vec![
(Instruction::load_constant(0, 0, false), Span(0, 36)),
(Instruction::load_constant(1, 1, false), Span(36, 37)),
(Instruction::load_constant(2, 2, false), Span(39, 40)),
(Instruction::call(3, 0, 2), Span(35, 41)),
(Instruction::r#return(true), Span(41, 41)),
],
vec![
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ConcreteValue::Function(Chunk::with_data(
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None,
vec![
(Instruction::add(2, 0, 1), Span(30, 31)),
(Instruction::r#return(true), Span(35, 36)),
],
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vec![ConcreteValue::string("a"), ConcreteValue::string("b"),],
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vec![
Local::new(0, Type::Integer, false, Scope::default()),
Local::new(1, Type::Integer, false, Scope::default())
]
)),
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ConcreteValue::Integer(1),
ConcreteValue::Integer(2)
],
vec![]
)),
);
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assert_eq!(run(source), Ok(Some(ConcreteValue::Integer(3))));
}
#[test]
fn function_declaration() {
let source = "fn add (a: int, b: int) -> int { a + b }";
assert_eq!(
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compile(source),
Ok(Chunk::with_data(
None,
vec![
(Instruction::load_constant(0, 1, false), Span(0, 40)),
(Instruction::define_local(0, 0, false), Span(3, 6)),
(Instruction::r#return(false), Span(40, 40))
],
vec![
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ConcreteValue::string("add"),
ConcreteValue::Function(Chunk::with_data(
Some("add".to_string()),
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vec![
(Instruction::add(2, 0, 1), Span(35, 36)),
(Instruction::r#return(true), Span(40, 40)),
],
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vec![ConcreteValue::string("a"), ConcreteValue::string("b")],
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vec![
Local::new(0, Type::Integer, false, Scope::default()),
Local::new(1, Type::Integer, false, Scope::default())
]
),)
],
vec![Local::new(
0,
Type::Function(FunctionType {
type_parameters: None,
value_parameters: Some(vec![(0, Type::Integer), (1, Type::Integer)]),
return_type: Box::new(Type::Integer),
}),
false,
Scope::default(),
)],
)),
);
assert_eq!(run(source), Ok(None));
}