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refactor(tvix/eval): index into Chunk with ConstantIdx/CodeIdx

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This is a step towards hiding the internal fields of thunk, and making
the interface of the type more predictable.

Part of the preparation for implementing observers.

Change-Id: I1a88a96419c72eb9e2332b56a2dd94afa47e6f88
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6447
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
This commit is contained in:
Vincent Ambo 2022-09-04 16:49:42 +03:00 • committed by tazjin
parent 8c64ebe074
commit 1fe6cfe5a2
2 changed files with 22 additions and 8 deletions
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8
tvix/eval/src/vm.rs
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@ -218,7 +218,7 @@ impl VM {
match op {
OpCode::OpConstant(idx) => {
let c = self.chunk().constant(idx).clone();
let c = self.chunk()[idx].clone();
self.push(c);
}
@ -477,7 +477,7 @@ impl VM {
}
OpCode::OpClosure(idx) => {
let blueprint = match self.chunk().constant(idx) {
let blueprint = match &self.chunk()[idx] {
Value::Blueprint(lambda) => lambda.clone(),
_ => panic!("compiler bug: non-blueprint in blueprint slot"),
};
@ -501,7 +501,7 @@ impl VM {
}
OpCode::OpThunk(idx) => {
let blueprint = match self.chunk().constant(idx) {
let blueprint = match &self.chunk()[idx] {
Value::Blueprint(lambda) => lambda.clone(),
_ => panic!("compiler bug: non-blueprint in blueprint slot"),
};
@ -594,7 +594,7 @@ impl VM {
fn resolve_dynamic_upvalue(&mut self, ident_idx: ConstantIdx) -> EvalResult<Value> {
let chunk = self.chunk();
let ident = fallible!(self, chunk.constant(ident_idx).to_str());
let ident = fallible!(self, chunk[ident_idx].to_str());
// Peek at the current instruction (note: IP has already
// advanced!) to see if it is actually data indicating a