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Pass parser test

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This commit is contained in:
Jeff 2024-09-07 04:37:38 -04:00
parent 812d930488
commit 616f890028
1 changed files with 16 additions and 11 deletions
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27
dust-lang/src/parser.rs
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@ -75,15 +75,16 @@ impl<'src> Parser<'src> {
}
}
fn emit_byte(&mut self, byte: u8) {
self.chunk.write(byte, self.current_position);
fn emit_byte(&mut self, byte: u8, position: Span) {
self.chunk.write(byte, position);
}
fn emit_constant(&mut self, value: Value) -> Result<(), ParseError> {
let constant_index = self.chunk.push_constant(value)?;
let position = self.current_position;
self.emit_byte(Instruction::Constant as u8);
self.emit_byte(constant_index);
self.emit_byte(Instruction::Constant as u8, position);
self.emit_byte(constant_index, position);
Ok(())
}
@ -109,9 +110,11 @@ impl<'src> Parser<'src> {
fn parse_unary(&mut self) -> Result<(), ParseError> {
if let Some(Token::Minus) = self.current_token {
let operator_position = self.current_position;
self.advance()?;
self.parse_expression()?;
self.emit_byte(Instruction::Negate as u8);
self.emit_byte(Instruction::Negate as u8, operator_position);
}
Ok(())
@ -124,11 +127,11 @@ impl<'src> Parser<'src> {
self.parse(rule.precedence.increment())?;
match operator {
TokenKind::Plus => self.emit_byte(Instruction::Add as u8),
TokenKind::Minus => self.emit_byte(Instruction::Subtract as u8),
TokenKind::Star => self.emit_byte(Instruction::Multiply as u8),
TokenKind::Slash => self.emit_byte(Instruction::Divide as u8),
let byte = match operator {
TokenKind::Plus => Instruction::Add as u8,
TokenKind::Minus => Instruction::Subtract as u8,
TokenKind::Star => Instruction::Multiply as u8,
TokenKind::Slash => Instruction::Divide as u8,
_ => {
return Err(ParseError::ExpectedTokenMultiple {
expected: vec![
@ -141,7 +144,9 @@ impl<'src> Parser<'src> {
position: self.current_position,
})
}
}
};
self.emit_byte(byte, operator_position);
Ok(())
}