64 lines
1.8 KiB
Rust
64 lines
1.8 KiB
Rust
use dust_lang::*;
|
|
|
|
#[test]
|
|
fn define_local() {
|
|
let source = "let x = 42;";
|
|
|
|
assert_eq!(
|
|
compile(source),
|
|
Ok(Chunk::with_data(
|
|
None,
|
|
vec![
|
|
(Instruction::load_constant(0, 0, false), Span(8, 10)),
|
|
(Instruction::define_local(0, 0, false), Span(4, 5)),
|
|
(Instruction::r#return(false), Span(11, 11))
|
|
],
|
|
vec![Value::integer(42), Value::string("x")],
|
|
vec![Local::new(1, None, false, Scope::default(), 0)]
|
|
)),
|
|
);
|
|
|
|
assert_eq!(run(source), Ok(None));
|
|
}
|
|
|
|
#[test]
|
|
fn let_statement_expects_identifier() {
|
|
let source = "let 1 = 2";
|
|
|
|
assert_eq!(
|
|
compile(source),
|
|
Err(DustError::Compile {
|
|
error: CompileError::ExpectedToken {
|
|
expected: TokenKind::Identifier,
|
|
found: Token::Integer("1").to_owned(),
|
|
position: Span(4, 5)
|
|
},
|
|
source
|
|
})
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn set_local() {
|
|
let source = "let mut x = 41; x = 42; x";
|
|
|
|
assert_eq!(
|
|
compile(source),
|
|
Ok(Chunk::with_data(
|
|
None,
|
|
vec![
|
|
(Instruction::load_constant(0, 0, false), Span(12, 14)),
|
|
(Instruction::define_local(0, 0, true), Span(8, 9)),
|
|
(Instruction::load_constant(1, 2, false), Span(20, 22)),
|
|
(Instruction::set_local(1, 0), Span(16, 17)),
|
|
(Instruction::get_local(2, 0), Span(24, 25)),
|
|
(Instruction::r#return(true), Span(25, 25)),
|
|
],
|
|
vec![Value::integer(41), Value::string("x"), Value::integer(42)],
|
|
vec![Local::new(1, None, true, Scope::default(), 0)]
|
|
)),
|
|
);
|
|
|
|
assert_eq!(run(source), Ok(Some(Value::integer(42))));
|
|
}
|