feat(tazjin/rlox): Interpret if statements
Change-Id: Ic6aed29bec42098eb07e1ba9eb01dbcaae8d11e3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/2322 Tested-by: BuildkiteCI Reviewed-by: tazjin <mail@tazj.in>
This commit is contained in:
parent
a89777b34f
commit
93122a212e
1 changed files with 13 additions and 1 deletions
|
@ -127,7 +127,7 @@ impl Interpreter {
|
|||
}
|
||||
Statement::Var(var) => return self.interpret_var(var),
|
||||
Statement::Block(block) => return self.interpret_block(block),
|
||||
Statement::If(_) => unimplemented!(),
|
||||
Statement::If(if_stmt) => return self.interpret_if(if_stmt),
|
||||
}
|
||||
|
||||
Ok(())
|
||||
|
@ -160,6 +160,18 @@ impl Interpreter {
|
|||
return result;
|
||||
}
|
||||
|
||||
fn interpret_if<'a>(&mut self, if_stmt: &parser::If<'a>) -> Result<(), Error> {
|
||||
let condition = self.eval(&if_stmt.condition)?;
|
||||
|
||||
if eval_truthy(&condition) {
|
||||
self.interpret_stmt(&if_stmt.then_branch)
|
||||
} else if let Some(else_branch) = &if_stmt.else_branch {
|
||||
self.interpret_stmt(else_branch)
|
||||
} else {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
fn eval<'a>(&mut self, expr: &Expr<'a>) -> Result<Literal, Error> {
|
||||
match expr {
|
||||
Expr::Assign(assign) => self.eval_assign(assign),
|
||||
|
|
Loading…
Reference in a new issue