jeff/dust
1
0
Fork 0
Code

Move and replace lots of tests; Refactor parser

Browse Source
This commit is contained in:
Jeff 2024-10-04 22:21:17 -04:00
parent ba904fdcd8
commit 5411a1db27
5 changed files with 759 additions and 858 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
dust-lang/src/parser/mod.rs → dust-lang/src/parser.rs
View File

@ -1,6 +1,3 @@
#[cfg(test)]
mod tests;
use std::{
fmt::{self, Display, Formatter},
mem::replace,
@ -283,7 +280,7 @@ impl<'src> Parser<'src> {
_allow_return: bool,
) -> Result<(), ParseError> {
self.allow(TokenKind::LeftParenthesis)?;
self.parse_expression()?;
self.parse(Precedence::Assignment)?; // Do not allow assignment
self.expect(TokenKind::RightParenthesis)
}
@ -296,7 +293,7 @@ impl<'src> Parser<'src> {
let operator_position = self.current_position;
self.advance()?;
self.parse_expression()?;
self.parse(Precedence::Assignment)?; // Do not allow assignment
let (previous_instruction, previous_position) =
self.chunk.pop_instruction(self.current_position)?;
@ -597,7 +594,7 @@ impl<'src> Parser<'src> {
});
}
self.parse_expression()?;
self.parse(Precedence::Assignment)?; // Do not allow assignment
let (mut previous_instruction, previous_position) =
self.chunk.pop_instruction(self.current_position)?;
@ -716,7 +713,7 @@ impl<'src> Parser<'src> {
let length = self.chunk.len();
self.advance()?;
self.parse_expression()?;
self.parse(Precedence::Assignment)?; // Do not allow assignment
let is_explicit_boolean =
matches!(self.previous_token, Token::Boolean(_)) && length == self.chunk.len() - 1;
@ -728,22 +725,6 @@ impl<'src> Parser<'src> {
);
}
if matches!(
self.chunk.get_last_n_operations(),
[
Some(Operation::LoadBoolean),
Some(Operation::LoadBoolean),
Some(Operation::Jump)
]
) {
self.chunk.pop_instruction(self.current_position)?;
self.chunk.pop_instruction(self.current_position)?;
self.chunk.pop_instruction(self.current_position)?;
self.decrement_register()?;
}
let jump_start = self.chunk.len();
if let Token::LeftCurlyBrace = self.current_token {
self.parse_block(allow_assignment, allow_return)?;
}
@ -759,15 +740,6 @@ impl<'src> Parser<'src> {
self.emit_instruction(load_constant, load_constant_position);
}
let jump_end = self.chunk.len();
let jump_distance = jump_end.saturating_sub(jump_start);
self.chunk.insert_instruction(
jump_start,
Instruction::jump(jump_distance as u8, true),
self.current_position,
);
if self.allow(TokenKind::Else)? {
if let Token::If = self.current_token {
self.parse_if(allow_assignment, allow_return)?;
@ -790,10 +762,10 @@ impl<'src> Parser<'src> {
let jump_start = self.chunk.len();
self.parse_expression()?;
self.parse(Precedence::Assignment)?; // Do not allow assignment
self.parse_block(allow_assignment, allow_return)?;
let jump_end = self.chunk.len() - 1;
let jump_end = self.chunk.len();
let jump_distance = jump_end.saturating_sub(jump_start) as u8;
let jump_back = Instruction::jump(jump_distance, false);
let jump_over_index = self.chunk.find_last_instruction(Operation::Jump);
@ -851,7 +823,14 @@ impl<'src> Parser<'src> {
}
};
self.allow(TokenKind::Semicolon)?;
if !self.allow(TokenKind::Semicolon)? && self.is_eof() {
let register = self.current_register.saturating_sub(1);
self.emit_instruction(
Instruction::r#return(register, register),
self.current_position,
);
}
Ok(())
}
@ -894,25 +873,6 @@ impl<'src> Parser<'src> {
self.chunk
.declare_local(identifier, is_mutable, register, *previous_position)?;
// Optimize for assignment to a comparison
// if let Operation::Jump = previous_instruction.operation() {
// let (jump, jump_position) = self.chunk.pop_instruction(self.current_position)?;
// if let Some(Operation::Equal) = self.chunk.get_last_operation() {
// self.emit_instruction(jump, jump_position);
// self.emit_instruction(
// Instruction::load_boolean(self.current_register, true, true),
// self.current_position,
// );
// self.emit_instruction(
// Instruction::load_boolean(self.current_register, false, false),
// self.current_position,
// );
// } else {
// self.emit_instruction(jump, jump_position);
// }
// }
self.emit_instruction(
Instruction::define_local(register, local_index, is_mutable),
position,

646
dust-lang/src/parser/tests.rs
View File

@ -1,646 +0,0 @@
use crate::Local;
use super::*;
#[test]
fn not() {
let source = "!true";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_boolean(0, true, false), Span(1, 5)),
(Instruction::not(1, 0), Span(0, 1)),
],
vec![],
vec![]
)),
);
}
#[test]
fn negate() {
let source = "-(42)";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![(*Instruction::negate(0, 0).set_b_is_constant(), Span(0, 1)),],
vec![Value::integer(42)],
vec![]
)),
);
}
#[test]
fn greater_than_or_equal() {
let source = "1 >= 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::less(false, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 4)
),
(Instruction::jump(1, true), Span(2, 4)),
(Instruction::load_boolean(0, true, true), Span(2, 4)),
(Instruction::load_boolean(0, false, false), Span(2, 4)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
}
#[test]
fn greater() {
let source = "1 > 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::less_equal(false, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),
(Instruction::jump(1, true), Span(2, 3)),
(Instruction::load_boolean(0, true, true), Span(2, 3)),
(Instruction::load_boolean(0, false, false), Span(2, 3)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
}
#[test]
fn less_than_or_equal() {
let source = "1 <= 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::less_equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 4)
),
(Instruction::jump(1, true), Span(2, 4)),
(Instruction::load_boolean(0, true, true), Span(2, 4)),
(Instruction::load_boolean(0, false, false), Span(2, 4)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
}
#[test]
fn less_than() {
let source = "1 < 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::less(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),
(Instruction::jump(1, true), Span(2, 3)),
(Instruction::load_boolean(0, true, true), Span(2, 3)),
(Instruction::load_boolean(0, false, false), Span(2, 3)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
}
#[test]
fn not_equal() {
let source = "1 != 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(false, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 4)
),
(Instruction::jump(1, true), Span(2, 4)),
(Instruction::load_boolean(0, true, true), Span(2, 4)),
(Instruction::load_boolean(0, false, false), Span(2, 4)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
}
#[test]
fn equal() {
let source = "1 == 2";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 4)
),
(Instruction::jump(1, true), Span(2, 4)),
(Instruction::load_boolean(0, true, true), Span(2, 4)),
(Instruction::load_boolean(0, false, false), Span(2, 4)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
}
#[test]
fn equality_assignment_long() {
let source = "let a = if 4 == 4 { true } else { false };";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(13, 15)
),
(Instruction::jump(1, true), Span(27, 31)),
(Instruction::load_boolean(0, true, false), Span(20, 24)),
(Instruction::load_boolean(0, false, false), Span(34, 39)),
(Instruction::define_local(0, 0, false), Span(4, 5)),
],
vec![Value::integer(4), Value::integer(4)],
vec![Local::new(Identifier::new("a"), false, 0, Some(0))]
)),
);
}
#[test]
fn equality_assignment_short() {
let source = "let a = 4 == 4;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(10, 12)
),
(Instruction::jump(1, true), Span(10, 12)),
(Instruction::load_boolean(0, true, true), Span(10, 12)),
(Instruction::load_boolean(0, false, false), Span(10, 12)),
(Instruction::define_local(0, 0, false), Span(4, 5)),
],
vec![Value::integer(4), Value::integer(4)],
vec![Local::new(Identifier::new("a"), false, 0, Some(0))]
)),
);
}
#[test]
fn if_expression() {
let source = "if 1 == 1 { 2 }";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(5, 7)
),
(Instruction::jump(1, true), Span(15, 15)),
(Instruction::load_constant(0, 2, false), Span(12, 13)),
],
vec![Value::integer(1), Value::integer(1), Value::integer(2)],
vec![]
)),
);
}
#[test]
fn if_else_expression() {
let source = "if 1 == 1 { 2 } else { 3 }";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(5, 7)
),
(Instruction::jump(1, true), Span(16, 20)),
(Instruction::load_constant(0, 2, true), Span(12, 13)),
(Instruction::load_constant(0, 3, false), Span(23, 24)),
],
vec![
Value::integer(1),
Value::integer(1),
Value::integer(2),
Value::integer(3)
],
vec![]
)),
);
}
#[test]
fn list_with_complex_expression() {
let source = "[1, 2 + 3 - 4 * 5]";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(1, 2)),
(
*Instruction::add(1, 1, 2)
.set_b_is_constant()
.set_c_is_constant(),
Span(6, 7)
),
(
*Instruction::multiply(2, 3, 4)
.set_b_is_constant()
.set_c_is_constant(),
Span(14, 15)
),
(Instruction::subtract(3, 1, 2), Span(10, 11)),
(Instruction::close(1, 3), Span(17, 18)),
(Instruction::load_list(4, 0, 3), Span(0, 18)),
],
vec![
Value::integer(1),
Value::integer(2),
Value::integer(3),
Value::integer(4),
Value::integer(5)
],
vec![]
)),
);
}
#[test]
fn list_with_simple_expression() {
let source = "[1, 2 + 3, 4]";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(1, 2)),
(
*Instruction::add(1, 1, 2)
.set_b_is_constant()
.set_c_is_constant(),
Span(6, 7)
),
(Instruction::load_constant(2, 3, false), Span(11, 12)),
(Instruction::load_list(3, 0, 2), Span(0, 13)),
],
vec![
Value::integer(1),
Value::integer(2),
Value::integer(3),
Value::integer(4),
],
vec![]
)),
);
}
#[test]
fn list() {
let source = "[1, 2, 3]";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(1, 2)),
(Instruction::load_constant(1, 1, false), Span(4, 5)),
(Instruction::load_constant(2, 2, false), Span(7, 8)),
(Instruction::load_list(3, 0, 2), Span(0, 9)),
],
vec![Value::integer(1), Value::integer(2), Value::integer(3),],
vec![]
)),
);
}
#[test]
fn block_scope() {
let source = "
let a = 0;
{
let b = 42;
{
let c = 1;
}
let d = 2;
}
let e = 1;
";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(17, 18)),
(Instruction::define_local(0, 0, false), Span(13, 14)),
(Instruction::load_constant(1, 1, false), Span(50, 52)),
(Instruction::define_local(1, 1, false), Span(46, 47)),
(Instruction::load_constant(2, 2, false), Span(92, 93)),
(Instruction::define_local(2, 2, false), Span(88, 89)),
(Instruction::load_constant(3, 3, false), Span(129, 130)),
(Instruction::define_local(3, 3, false), Span(125, 126)),
(Instruction::load_constant(4, 4, false), Span(158, 159)),
(Instruction::define_local(4, 4, false), Span(154, 155)),
],
vec![
Value::integer(0),
Value::integer(42),
Value::integer(1),
Value::integer(2),
Value::integer(1)
],
vec![
Local::new(Identifier::new("a"), false, 0, Some(0)),
Local::new(Identifier::new("b"), false, 1, Some(1)),
Local::new(Identifier::new("c"), false, 2, Some(2)),
Local::new(Identifier::new("d"), false, 1, Some(3)),
Local::new(Identifier::new("e"), false, 0, Some(4)),
]
)),
);
}
#[test]
fn empty() {
assert_eq!(parse(""), Ok(Chunk::with_data(vec![], vec![], vec![])),);
}
#[test]
fn set_local() {
assert_eq!(
parse("let mut x = 41; x = 42;"),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(12, 14)),
(Instruction::define_local(0, 0, true), Span(8, 9)),
(Instruction::load_constant(1, 1, false), Span(20, 22)),
(Instruction::set_local(1, 0), Span(16, 17)),
],
vec![Value::integer(41), Value::integer(42)],
vec![Local::new(Identifier::new("x"), true, 0, Some(0)),]
)),
);
}
#[test]
fn parentheses_precedence() {
assert_eq!(
parse("(1 + 2) * 3"),
Ok(Chunk::with_data(
vec![
(
*Instruction::add(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(3, 4)
),
(
*Instruction::multiply(1, 0, 2).set_c_is_constant(),
Span(8, 9)
),
],
vec![Value::integer(1), Value::integer(2), Value::integer(3)],
vec![]
))
);
}
#[test]
fn math_operator_precedence() {
assert_eq!(
parse("1 + 2 - 3 * 4 / 5"),
Ok(Chunk::with_data(
vec![
(
*Instruction::add(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),
(
*Instruction::multiply(1, 2, 3)
.set_b_is_constant()
.set_c_is_constant(),
Span(10, 11)
),
(
*Instruction::divide(2, 1, 4).set_c_is_constant(),
Span(14, 15)
),
(Instruction::subtract(3, 0, 2), Span(6, 7)),
],
vec![
Value::integer(1),
Value::integer(2),
Value::integer(3),
Value::integer(4),
Value::integer(5),
],
vec![]
))
);
}
#[test]
fn define_local() {
assert_eq!(
parse("let x = 42;"),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(8, 10)),
(Instruction::define_local(0, 0, false), Span(4, 5)),
],
vec![Value::integer(42)],
vec![Local::new(Identifier::new("x"), false, 0, Some(0))]
)),
);
}
#[test]
fn or() {
assert_eq!(
parse("true || false"),
Ok(Chunk::with_data(
vec![
(Instruction::load_boolean(0, true, false), Span(0, 4)),
(Instruction::test(0, true), Span(5, 7)),
(Instruction::jump(1, true), Span(5, 7)),
(Instruction::load_boolean(1, false, false), Span(8, 13)),
],
vec![],
vec![]
))
);
}
#[test]
fn and() {
assert_eq!(
parse("true && false"),
Ok(Chunk::with_data(
vec![
(Instruction::load_boolean(0, true, false), Span(0, 4)),
(Instruction::test(0, false), Span(5, 7)),
(Instruction::jump(1, true), Span(5, 7)),
(Instruction::load_boolean(1, false, false), Span(8, 13)),
],
vec![],
vec![]
))
);
}
#[test]
fn variable_and() {
assert_eq!(
parse("let a = true; let b = false; a && b"),
Ok(Chunk::with_data(
vec![
(Instruction::load_boolean(0, true, false), Span(8, 12)),
(Instruction::define_local(0, 0, false), Span(4, 5)),
(Instruction::load_boolean(1, false, false), Span(22, 27)),
(Instruction::define_local(1, 1, false), Span(18, 19)),
(Instruction::get_local(2, 0), Span(29, 30)),
(Instruction::test(2, false), Span(31, 33)),
(Instruction::jump(1, true), Span(31, 33)),
(Instruction::get_local(3, 1), Span(34, 35)),
],
vec![],
vec![
Local::new(Identifier::new("a"), false, 0, Some(0)),
Local::new(Identifier::new("b"), false, 0, Some(1)),
]
))
);
}
#[test]
fn divide() {
assert_eq!(
parse("1 / 2"),
Ok(Chunk::with_data(
vec![(
*Instruction::divide(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),],
vec![Value::integer(1), Value::integer(2)],
vec![]
))
);
}
#[test]
fn multiply() {
assert_eq!(
parse("1 * 2"),
Ok(Chunk::with_data(
vec![(
*Instruction::multiply(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),],
vec![Value::integer(1), Value::integer(2)],
vec![]
))
);
}
#[test]
fn add() {
assert_eq!(
parse("1 + 2"),
Ok(Chunk::with_data(
vec![(
*Instruction::add(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),],
vec![Value::integer(1), Value::integer(2)],
vec![]
))
);
}
#[test]
fn subtract() {
assert_eq!(
parse("1 - 2"),
Ok(Chunk::with_data(
vec![(
*Instruction::subtract(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),],
vec![Value::integer(1), Value::integer(2)],
vec![]
))
);
}
#[test]
fn constant() {
assert_eq!(
parse("42"),
Ok(Chunk::with_data(
vec![(Instruction::load_constant(0, 0, false), Span(0, 2)),],
vec![Value::integer(42)],
vec![]
))
);
}

8
dust-lang/src/vm.rs
View File

@ -366,7 +366,7 @@ impl Vm {
Operation::Return => {
let start_register = instruction.a();
let end_register = instruction.b();
let return_value_count = end_register - start_register;
let return_value_count = (end_register - start_register).max(1);
if return_value_count == 1 {
return Ok(Some(self.take(start_register, position)?));
@ -375,9 +375,7 @@ impl Vm {
}
}
let final_value = self._pop(Span(0, 0))?;
Ok(Some(final_value))
Ok(None)
}
fn insert(&mut self, value: Value, index: u8, position: Span) -> Result<(), VmError> {
@ -488,7 +486,7 @@ impl Vm {
}
}
fn _pop(&mut self, position: Span) -> Result<Value, VmError> {
fn pop(&mut self, position: Span) -> Result<Value, VmError> {
if let Some(register) = self.register_stack.pop() {
let value = register.ok_or(VmError::EmptyRegister {
index: self.register_stack.len().saturating_sub(1),

839
dust-lang/tests/expressions.rs
View File

@ -1,113 +1,758 @@
use dust_lang::*;
#[test]
fn r#while() {
assert_eq!(
run("let mut x = 0; while x < 5 { x = x + 1 } x"),
Ok(Some(Value::integer(5)))
);
}
#[test]
fn if_else() {
assert_eq!(run("if true { 1 } else { 2 }"), Ok(Some(Value::integer(1))));
assert_eq!(
run("if false { 1 } else { 2 }"),
Ok(Some(Value::integer(2)))
);
}
#[test]
fn r#if() {
assert_eq!(run("if true { 1 }"), Ok(Some(Value::integer(1))));
assert_eq!(
run("if 42 == 42 { 1 } else { 2 }"),
Ok(Some(Value::integer(1)))
);
}
#[test]
fn less_than() {
assert_eq!(run("1 < 2"), Ok(Some(Value::boolean(true))));
assert_eq!(run("2 < 1"), Ok(Some(Value::boolean(false))));
}
#[test]
fn greater_than() {
assert_eq!(run("1 > 2"), Ok(Some(Value::boolean(false))));
assert_eq!(run("2 > 1"), Ok(Some(Value::boolean(true))));
}
#[test]
fn less_than_or_equal() {
assert_eq!(run("1 <= 2"), Ok(Some(Value::boolean(true))));
assert_eq!(run("1 <= 1"), Ok(Some(Value::boolean(true))));
}
#[test]
fn greater_than_or_equal() {
assert_eq!(run("1 >= 2"), Ok(Some(Value::boolean(false))));
assert_eq!(run("1 >= 1"), Ok(Some(Value::boolean(true))));
}
#[test]
fn equal() {
assert_eq!(run("1 == 1"), Ok(Some(Value::boolean(true))));
assert_eq!(run("1 == 2"), Ok(Some(Value::boolean(false))));
}
#[test]
fn not_equal() {
assert_eq!(run("1 != 1"), Ok(Some(Value::boolean(false))));
assert_eq!(run("2 != 1"), Ok(Some(Value::boolean(true))));
}
#[test]
fn and() {
assert_eq!(run("true && true"), Ok(Some(Value::boolean(true))));
assert_eq!(run("true && false"), Ok(Some(Value::boolean(false))));
assert_eq!(run("false && true"), Ok(Some(Value::boolean(false))));
assert_eq!(run("false && false"), Ok(Some(Value::boolean(false))));
}
#[test]
fn or() {
assert_eq!(run("true || true"), Ok(Some(Value::boolean(true))));
assert_eq!(run("true || false"), Ok(Some(Value::boolean(true))));
assert_eq!(run("false || true"), Ok(Some(Value::boolean(true))));
assert_eq!(run("false || false"), Ok(Some(Value::boolean(false))));
}
#[test]
fn not() {
assert_eq!(run("!true"), Ok(Some(Value::boolean(false))));
assert_eq!(run("!false"), Ok(Some(Value::boolean(true))));
}
#[test]
fn long_math() {
assert_eq!(
run("1 + 2 * 3 - 4 / 2"),
Ok(Some(Value::integer(5).into_reference()))
);
}
#[test]
fn add() {
assert_eq!(
parse("1 + 2"),
Ok(Chunk::with_data(
vec![
(
*Instruction::add(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),
(Instruction::r#return(0, 0), Span(5, 5))
],
vec![Value::integer(1), Value::integer(2)],
vec![]
))
);
assert_eq!(run("1 + 2"), Ok(Some(Value::integer(3))));
}
#[test]
fn subtract() {
assert_eq!(run("1 - 2"), Ok(Some(Value::integer(-1))));
fn and() {
assert_eq!(
parse("true && false"),
Ok(Chunk::with_data(
vec![
(Instruction::load_boolean(0, true, false), Span(0, 4)),
(Instruction::test(0, false), Span(5, 7)),
(Instruction::jump(1, true), Span(5, 7)),
(Instruction::load_boolean(1, false, false), Span(8, 13)),
],
vec![],
vec![]
))
);
assert_eq!(run("true && false"), Ok(Some(Value::boolean(false))));
}
#[test]
fn multiply() {
assert_eq!(run("2 * 3"), Ok(Some(Value::integer(6))));
fn block_scope() {
let source = "
let a = 0;
{
let b = 42;
{
let c = 1;
}
let d = 2;
}
let e = 1;
";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(17, 18)),
(Instruction::define_local(0, 0, false), Span(13, 14)),
(Instruction::load_constant(1, 1, false), Span(50, 52)),
(Instruction::define_local(1, 1, false), Span(46, 47)),
(Instruction::load_constant(2, 2, false), Span(92, 93)),
(Instruction::define_local(2, 2, false), Span(88, 89)),
(Instruction::load_constant(3, 3, false), Span(129, 130)),
(Instruction::define_local(3, 3, false), Span(125, 126)),
(Instruction::load_constant(4, 4, false), Span(158, 159)),
(Instruction::define_local(4, 4, false), Span(154, 155)),
],
vec![
Value::integer(0),
Value::integer(42),
Value::integer(1),
Value::integer(2),
Value::integer(1)
],
vec![
Local::new(Identifier::new("a"), false, 0, Some(0)),
Local::new(Identifier::new("b"), false, 1, Some(1)),
Local::new(Identifier::new("c"), false, 2, Some(2)),
Local::new(Identifier::new("d"), false, 1, Some(3)),
Local::new(Identifier::new("e"), false, 0, Some(4)),
]
)),
);
assert_eq!(run(source), Ok(None));
}
#[test]
fn constant() {
assert_eq!(
parse("42"),
Ok(Chunk::with_data(
vec![(Instruction::load_constant(0, 0, false), Span(0, 2)),],
vec![Value::integer(42)],
vec![]
))
);
assert_eq!(run("42"), Ok(Some(Value::integer(42))));
}
#[test]
fn define_local() {
assert_eq!(
parse("let x = 42;"),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(8, 10)),
(Instruction::define_local(0, 0, false), Span(4, 5)),
],
vec![Value::integer(42)],
vec![Local::new(Identifier::new("x"), false, 0, Some(0))]
)),
);
assert_eq!(run("let x = 42;"), Ok(None));
}
#[test]
fn divide() {
assert_eq!(run("6 / 3"), Ok(Some(Value::integer(2))));
assert_eq!(
parse("1.0 / 2.0"),
Ok(Chunk::with_data(
vec![(
*Instruction::divide(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),],
vec![Value::integer(1), Value::integer(2)],
vec![]
))
);
assert_eq!(run("1 / 2"), Ok(Some(Value::float(0.5))));
}
#[test]
fn empty() {
assert_eq!(parse(""), Ok(Chunk::with_data(vec![], vec![], vec![])),);
assert_eq!(run(""), Ok(None));
}
#[test]
fn equal() {
let source = "1 == 2";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 4)
),
(Instruction::jump(1, true), Span(2, 4)),
(Instruction::load_boolean(0, true, true), Span(2, 4)),
(Instruction::load_boolean(0, false, false), Span(2, 4)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::boolean(false))));
}
#[test]
fn equality_assignment_long() {
let source = "let a = if 4 == 4 { true } else { false };";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(13, 15)
),
(Instruction::jump(1, true), Span(27, 31)),
(Instruction::load_boolean(0, true, false), Span(20, 24)),
(Instruction::load_boolean(0, false, false), Span(34, 39)),
(Instruction::define_local(0, 0, false), Span(4, 5)),
],
vec![Value::integer(4), Value::integer(4)],
vec![Local::new(Identifier::new("a"), false, 0, Some(0))]
)),
);
assert_eq!(run(source), Ok(Some(Value::boolean(true))));
}
#[test]
fn equality_assignment_short() {
let source = "let a = 4 == 4;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(10, 12)
),
(Instruction::jump(1, true), Span(10, 12)),
(Instruction::load_boolean(0, true, true), Span(10, 12)),
(Instruction::load_boolean(0, false, false), Span(10, 12)),
(Instruction::define_local(0, 0, false), Span(4, 5)),
],
vec![Value::integer(4), Value::integer(4)],
vec![Local::new(Identifier::new("a"), false, 0, Some(0))]
)),
);
assert_eq!(run(source), Ok(None));
}
#[test]
fn greater() {
let source = "1 > 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::less_equal(false, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),
(Instruction::jump(1, true), Span(2, 3)),
(Instruction::load_boolean(0, true, true), Span(2, 3)),
(Instruction::load_boolean(0, false, false), Span(2, 3)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::boolean(false))));
}
#[test]
fn greater_than_or_equal() {
let source = "1 >= 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::less(false, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 4)
),
(Instruction::jump(1, true), Span(2, 4)),
(Instruction::load_boolean(0, true, true), Span(2, 4)),
(Instruction::load_boolean(0, false, false), Span(2, 4)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::boolean(false))));
}
#[test]
fn if_else_expression() {
let source = "if 1 == 1 { 2 } else { 3 }";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(5, 7)
),
(Instruction::jump(1, true), Span(16, 20)),
(Instruction::load_constant(0, 2, true), Span(12, 13)),
(Instruction::load_constant(0, 3, false), Span(23, 24)),
],
vec![
Value::integer(1),
Value::integer(1),
Value::integer(2),
Value::integer(3)
],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::integer(2))));
}
#[test]
fn if_expression() {
let source = "if 1 == 1 { 2 }";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(5, 7)
),
(Instruction::jump(1, true), Span(15, 15)),
(Instruction::load_constant(0, 2, false), Span(12, 13)),
],
vec![Value::integer(1), Value::integer(1), Value::integer(2)],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::integer(2))));
}
#[test]
fn less_than() {
let source = "1 < 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::less(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),
(Instruction::jump(1, true), Span(2, 3)),
(Instruction::load_boolean(0, true, true), Span(2, 3)),
(Instruction::load_boolean(0, false, false), Span(2, 3)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::boolean(true))));
}
#[test]
fn less_than_or_equal() {
let source = "1 <= 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::less_equal(true, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 4)
),
(Instruction::jump(1, true), Span(2, 4)),
(Instruction::load_boolean(0, true, true), Span(2, 4)),
(Instruction::load_boolean(0, false, false), Span(2, 4)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::boolean(true))));
}
#[test]
fn list() {
let source = "[1, 2, 3]";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(1, 2)),
(Instruction::load_constant(1, 1, false), Span(4, 5)),
(Instruction::load_constant(2, 2, false), Span(7, 8)),
(Instruction::load_list(3, 0, 2), Span(0, 9)),
],
vec![Value::integer(1), Value::integer(2), Value::integer(3),],
vec![]
)),
);
assert_eq!(
run(source),
Ok(Some(Value::list(vec![
Value::integer(1),
Value::integer(2),
Value::integer(3)
])))
);
}
#[test]
fn list_with_complex_expression() {
let source = "[1, 2 + 3 - 4 * 5]";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(1, 2)),
(
*Instruction::add(1, 1, 2)
.set_b_is_constant()
.set_c_is_constant(),
Span(6, 7)
),
(
*Instruction::multiply(2, 3, 4)
.set_b_is_constant()
.set_c_is_constant(),
Span(14, 15)
),
(Instruction::subtract(3, 1, 2), Span(10, 11)),
(Instruction::close(1, 3), Span(17, 18)),
(Instruction::load_list(4, 0, 3), Span(0, 18)),
],
vec![
Value::integer(1),
Value::integer(2),
Value::integer(3),
Value::integer(4),
Value::integer(5)
],
vec![]
)),
);
assert_eq!(
run(source),
Ok(Some(Value::list(vec![
Value::integer(1),
Value::integer(1)
])))
);
}
#[test]
fn list_with_simple_expression() {
let source = "[1, 2 + 3, 4]";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(1, 2)),
(
*Instruction::add(1, 1, 2)
.set_b_is_constant()
.set_c_is_constant(),
Span(6, 7)
),
(Instruction::load_constant(2, 3, false), Span(11, 12)),
(Instruction::load_list(3, 0, 2), Span(0, 13)),
],
vec![
Value::integer(1),
Value::integer(2),
Value::integer(3),
Value::integer(4),
],
vec![]
)),
);
assert_eq!(
run(source),
Ok(Some(Value::list(vec![
Value::integer(1),
Value::integer(5),
Value::integer(4)
])))
);
}
#[test]
fn math_operator_precedence() {
assert_eq!(
parse("1 + 2 - 3 * 4 / 5"),
Ok(Chunk::with_data(
vec![
(
*Instruction::add(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),
(
*Instruction::multiply(1, 2, 3)
.set_b_is_constant()
.set_c_is_constant(),
Span(10, 11)
),
(
*Instruction::divide(2, 1, 4).set_c_is_constant(),
Span(14, 15)
),
(Instruction::subtract(3, 0, 2), Span(6, 7)),
],
vec![
Value::integer(1),
Value::integer(2),
Value::integer(3),
Value::integer(4),
Value::integer(5),
],
vec![]
))
);
assert_eq!(run("1 + 2 - 3 * 4 / 5"), Ok(Some(Value::integer(1))));
}
#[test]
fn multiply() {
assert_eq!(
parse("1 * 2"),
Ok(Chunk::with_data(
vec![(
*Instruction::multiply(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),],
vec![Value::integer(1), Value::integer(2)],
vec![]
))
);
assert_eq!(run("1 * 2"), Ok(Some(Value::integer(2))));
}
#[test]
fn negate() {
let source = "-(42)";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![(*Instruction::negate(0, 0).set_b_is_constant(), Span(0, 1)),],
vec![Value::integer(42)],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::integer(-42))));
}
#[test]
fn not() {
let source = "!true";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_boolean(0, true, false), Span(1, 5)),
(Instruction::not(1, 0), Span(0, 1)),
],
vec![],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::boolean(false))));
}
#[test]
fn not_equal() {
let source = "1 != 2;";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(
*Instruction::equal(false, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 4)
),
(Instruction::jump(1, true), Span(2, 4)),
(Instruction::load_boolean(0, true, true), Span(2, 4)),
(Instruction::load_boolean(0, false, false), Span(2, 4)),
],
vec![Value::integer(1), Value::integer(2)],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::boolean(true))));
}
#[test]
fn or() {
assert_eq!(
parse("true || false"),
Ok(Chunk::with_data(
vec![
(Instruction::load_boolean(0, true, false), Span(0, 4)),
(Instruction::test(0, true), Span(5, 7)),
(Instruction::jump(1, true), Span(5, 7)),
(Instruction::load_boolean(1, false, false), Span(8, 13)),
],
vec![],
vec![]
))
);
assert_eq!(run("true || false"), Ok(Some(Value::boolean(true))));
}
#[test]
fn parentheses_precedence() {
assert_eq!(
parse("(1 + 2) * 3"),
Ok(Chunk::with_data(
vec![
(
*Instruction::add(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(3, 4)
),
(
*Instruction::multiply(1, 0, 2).set_c_is_constant(),
Span(8, 9)
),
],
vec![Value::integer(1), Value::integer(2), Value::integer(3)],
vec![]
))
);
assert_eq!(run("(1 + 2) * 3"), Ok(Some(Value::integer(9))));
}
#[test]
fn set_local() {
assert_eq!(
parse("let mut x = 41; x = 42;"),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(12, 14)),
(Instruction::define_local(0, 0, true), Span(8, 9)),
(Instruction::load_constant(1, 1, false), Span(20, 22)),
(Instruction::set_local(1, 0), Span(16, 17)),
],
vec![Value::integer(41), Value::integer(42)],
vec![Local::new(Identifier::new("x"), true, 0, Some(0)),]
)),
);
assert_eq!(run("let mut x = 41; x = 42;"), Ok(Some(Value::integer(42))));
}
#[test]
fn subtract() {
assert_eq!(
parse("1 - 2"),
Ok(Chunk::with_data(
vec![(
*Instruction::subtract(0, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(2, 3)
),],
vec![Value::integer(1), Value::integer(2)],
vec![]
))
);
assert_eq!(run("1 - 2"), Ok(Some(Value::integer(-1))));
}
#[test]
fn variable_and() {
assert_eq!(
parse("let a = true; let b = false; a && b"),
Ok(Chunk::with_data(
vec![
(Instruction::load_boolean(0, true, false), Span(8, 12)),
(Instruction::define_local(0, 0, false), Span(4, 5)),
(Instruction::load_boolean(1, false, false), Span(22, 27)),
(Instruction::define_local(1, 1, false), Span(18, 19)),
(Instruction::get_local(2, 0), Span(29, 30)),
(Instruction::test(2, false), Span(31, 33)),
(Instruction::jump(1, true), Span(31, 33)),
(Instruction::get_local(3, 1), Span(34, 35)),
],
vec![],
vec![
Local::new(Identifier::new("a"), false, 0, Some(0)),
Local::new(Identifier::new("b"), false, 0, Some(1)),
]
))
);
assert_eq!(
run("let a = true; let b = false; a && b"),
Ok(Some(Value::boolean(false)))
);
}
#[test]
fn r#while() {
let source = "let mut x = 0; while x < 5 { x = x + 1 } x";
assert_eq!(
parse(source),
Ok(Chunk::with_data(
vec![
(Instruction::load_constant(0, 0, false), Span(0, 1)),
(Instruction::define_local(0, 0, true), Span(0, 0)),
(
*Instruction::less(false, 0, 1)
.set_b_is_constant()
.set_c_is_constant(),
Span(0, 1)
),
(Instruction::jump(1, true), Span(0, 1)),
(Instruction::load_boolean(1, true, true), Span(0, 1)),
(Instruction::load_boolean(1, false, false), Span(0, 1)),
(Instruction::add(0, 0, 2), Span(0, 1)),
(Instruction::jump(0, false), Span(0, 1)),
(Instruction::get_local(3, 0), Span(0, 1)),
],
vec![],
vec![]
)),
);
assert_eq!(run(source), Ok(Some(Value::integer(5))));
}

56
dust-lang/tests/values.rs
View File

@ -1,56 +0,0 @@
use dust_lang::*;
#[test]
fn boolean() {
assert_eq!(run("true"), Ok(Some(Value::boolean(true))));
}
#[test]
fn byte() {
assert_eq!(run("0xff"), Ok(Some(Value::byte(0xff))));
}
#[test]
fn float_simple() {
assert_eq!(run("42.0"), Ok(Some(Value::float(42.0))));
}
#[test]
fn float_negative() {
assert_eq!(run("-42.0"), Ok(Some(Value::float(-42.0))));
}
#[test]
fn float_exponential() {
assert_eq!(run("4.2e1"), Ok(Some(Value::float(42.0))));
}
#[test]
fn float_exponential_negative() {
assert_eq!(run("4.2e-1"), Ok(Some(Value::float(0.42))));
}
#[test]
fn float_infinity_and_nan() {
assert_eq!(run("Infinity"), Ok(Some(Value::float(f64::INFINITY))));
assert_eq!(run("-Infinity"), Ok(Some(Value::float(f64::NEG_INFINITY))));
assert!(run("NaN").unwrap().unwrap().as_float().unwrap().is_nan());
}
#[test]
fn integer() {
assert_eq!(run("42"), Ok(Some(Value::integer(42))));
}
#[test]
fn integer_negative() {
assert_eq!(run("-42"), Ok(Some(Value::integer(-42))));
}
#[test]
fn string() {
assert_eq!(
run("\"Hello, world!\""),
Ok(Some(Value::string("Hello, world!")))
);
}