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interrupts!

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This commit is contained in:
nora 2022-06-20 15:18:26 +02:00
parent b56c293581
commit ce7deb7dc6
4 changed files with 64 additions and 17 deletions
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15
src/parser.rs
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@ -23,6 +23,8 @@ pub enum Token<'a> {
Mul,
#[token("div")]
Div,
#[token("int")]
Int,
#[token("[")]
BracketOpen,
#[token("]")]
@ -65,6 +67,7 @@ pub enum StmtKind {
Sub { to: Expr, value: Expr },
Mul { to: Expr, value: Expr },
Div { to: Expr, value: Expr },
Int { number: u64 },
Jmp { to: Expr },
Je { to: Expr },
Cmp { lhs: Expr, rhs: Expr },
@ -195,6 +198,17 @@ where
let value = self.expr()?;
stmt(span.start..value.span.end, StmtKind::Div { to, value })
}
Token::Int => {
let (next, next_span) = self.next()?;
if let Token::Number(number) = next {
stmt(span.start..next_span.end, StmtKind::Int { number })
} else {
return Err(CompilerError::simple(
format!("Expected number, found {:?}", next,),
next_span,
));
}
}
Token::Label(name) => {
let name = name
.strip_suffix(":")
@ -253,6 +267,7 @@ where
Token::Sub => return Err(CompilerError::not_allowed(span, "sub")),
Token::Mul => return Err(CompilerError::not_allowed(span, "mul")),
Token::Div => return Err(CompilerError::not_allowed(span, "div")),
Token::Int => return Err(CompilerError::not_allowed(span, "int")),
Token::BracketClose => return Err(CompilerError::not_allowed(span, "]")),
Token::Comma => return Err(CompilerError::not_allowed(span, ",")),
Token::Label(_) => return Err(CompilerError::not_allowed(span, "{label}")),