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