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feat(tvix/eval): track source spans for thunks

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Change-Id: I73f13c914d84e052a43b4eddb09db1acd8a7076a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6398
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
This commit is contained in:
Vincent Ambo 2022-09-01 17:54:41 +03:00 • committed by tazjin
parent ec8ff79aee
commit b8874f8d35
1 changed files with 11 additions and 8 deletions
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19
tvix/eval/src/compiler/mod.rs
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@ -147,7 +147,9 @@ impl Compiler<'_> {
ast::Expr::BinOp(op) => self.compile_binop(slot, op),
ast::Expr::HasAttr(has_attr) => self.compile_has_attr(slot, has_attr),
ast::Expr::List(list) => self.compile_list(slot, list),
ast::Expr::AttrSet(attrs) => self.thunk(slot, move |c, s| c.compile_attr_set(s, attrs)),
ast::Expr::AttrSet(attrs) => self.thunk(slot, &attrs, move |c, a, s| {
c.compile_attr_set(s, a.clone())
}),
ast::Expr::Select(select) => self.compile_select(slot, select),
ast::Expr::Assert(assert) => self.compile_assert(slot, assert),
ast::Expr::IfElse(if_else) => self.compile_if_else(slot, if_else),
@ -812,10 +814,10 @@ impl Compiler<'_> {
// This identifier is referring to a value from the same
// scope which is not yet defined. This identifier access
// must be thunked.
LocalPosition::Recursive(idx) => self.thunk(slot, move |compiler, _| {
LocalPosition::Recursive(idx) => self.thunk(slot, &node, move |compiler, node, _| {
let upvalue_idx =
compiler.add_upvalue(compiler.contexts.len() - 1, Upvalue::Local(idx));
compiler.push_op(OpCode::OpGetUpvalue(upvalue_idx), &node);
compiler.push_op(OpCode::OpGetUpvalue(upvalue_idx), node);
}),
};
}
@ -917,13 +919,14 @@ impl Compiler<'_> {
/// Compile an expression into a runtime thunk which should be
/// lazily evaluated when accessed.
// TODO: almost the same as Compiler::compile_lambda; unify?
fn thunk<F>(&mut self, slot: Option<LocalIdx>, content: F)
fn thunk<N, F>(&mut self, slot: Option<LocalIdx>, node: &N, content: F)
where
F: FnOnce(&mut Compiler, Option<LocalIdx>),
N: AstNode + Clone,
F: FnOnce(&mut Compiler, &N, Option<LocalIdx>),
{
self.contexts.push(LambdaCtx::new());
self.begin_scope();
content(self, slot);
content(self, node, slot);
self.end_scope();
let thunk = self.contexts.pop().unwrap();
@ -936,7 +939,7 @@ impl Compiler<'_> {
// Emit the thunk directly if it does not close over the
// environment.
if thunk.lambda.upvalue_count == 0 {
self.emit_constant_old(Value::Thunk(Thunk::new(Rc::new(thunk.lambda))));
self.emit_constant(Value::Thunk(Thunk::new(Rc::new(thunk.lambda))), node);
return;
}
@ -945,7 +948,7 @@ impl Compiler<'_> {
.chunk()
.push_constant(Value::Blueprint(Rc::new(thunk.lambda)));
self.push_op_old(OpCode::OpThunk(blueprint_idx));
self.push_op(OpCode::OpThunk(blueprint_idx), node);
self.emit_upvalue_data(slot, thunk.scope.upvalues);
}