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Store the result of the last statement in the builder.

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This commit is contained in:
Jeremy Wall 2017-07-29 12:57:34 -05:00
parent c71d668529
commit 0453a6043d
1 changed files with 10 additions and 3 deletions
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13
src/build.rs
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@ -191,6 +191,8 @@ pub struct Builder {
files: HashSet<String>,
/// out is our built output.
out: ValueMap,
/// last is the result of the last statement.
last: Option<Rc<Val>>,
}
macro_rules! eval_binary_expr {
@ -239,6 +241,7 @@ impl Builder {
assets: HashMap::new(),
files: HashSet::new(),
out: HashMap::new(),
last: None,
}
}
@ -247,6 +250,7 @@ impl Builder {
assets: HashMap::new(),
files: HashSet::new(),
out: scope,
last: None,
}
}
@ -551,6 +555,7 @@ impl Builder {
match stmt {
Statement::Let { name: sym, value: expr } => {
let val = try!(self.eval_expr(expr));
self.last = Some(val.clone());
match self.out.entry(sym) {
Entry::Occupied(e) => {
return Err(Box::new(
@ -568,13 +573,15 @@ impl Builder {
let mut b = Self::new();
b.build_file(&val);
let fields: Vec<(String, Rc<Val>)> = b.out.drain().collect();
self.assets.entry(sym).or_insert(Rc::new(Val::Tuple(fields)));
let result = Rc::new(Val::Tuple(fields));
self.assets.entry(sym).or_insert(result.clone());
self.files.insert(val);
self.last = Some(result);
}
}
}
Statement::Expression(ref expr) => {
// TODO(jwall): Is this just a noop? Maybe it's completely unnecessary?
Statement::Expression(expr) => {
self.last = Some(try!(self.eval_expr(expr)));
}
};
Ok(())