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runtime, macros: unify NaN-boxed value API under ValueVariant trait

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imxyy1soope1
2026-07-15 19:11:03 +08:00
parent 7220b42024
commit 09ee923903
28 changed files with 510 additions and 490 deletions
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fix-vm/src/lib.rs
+15 -21
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@@ -7,7 +7,7 @@
use std::path::PathBuf;
use fix_bytecode::{InstructionPtr, Continuation};
use fix_bytecode::{Continuation, InstructionPtr};
use fix_error::{Error, Result, Source};
use fix_lang::{BUILTINS, BuiltinId, StringId};
use gc_arena::metrics::Pacing;
@@ -63,7 +63,7 @@ fn init_builtins<'gc>(mc: &Mutation<'gc>, ctx: &mut impl VmRuntimeCtx) -> Value<
let dispatch_ip = Continuation::entry_for_builtin(id).ip();
entries.push((
name,
Value::new_inline(PrimOp {
Value::new(PrimOp {
id,
arity,
dispatch_ip,
@@ -74,21 +74,15 @@ fn init_builtins<'gc>(mc: &Mutation<'gc>, ctx: &mut impl VmRuntimeCtx) -> Value<
let consts = [
(
"__currentSystem",
Value::new_inline(ctx.intern_string("x86_64-linux")),
Value::new(ctx.intern_string("x86_64-linux")),
),
("__langVersion", Value::new_inline(6i32)),
(
"__nixVersion",
Value::new_inline(ctx.intern_string("2.24.0")),
),
(
"__storeDir",
Value::new_inline(ctx.intern_string("/nix/store")),
),
("__nixPath", Value::new_gc(Gc::new(mc, List::default()))),
("null", Value::new_inline(Null)),
("true", Value::new_inline(true)),
("false", Value::new_inline(false)),
("__langVersion", Value::new(6i32)),
("__nixVersion", Value::new(ctx.intern_string("2.24.0"))),
("__storeDir", Value::new(ctx.intern_string("/nix/store"))),
("__nixPath", Value::new(Gc::new(mc, List::default()))),
("null", Value::new(Null)),
("true", Value::new(true)),
("false", Value::new(false)),
];
for (name, val) in consts {
@@ -99,12 +93,12 @@ fn init_builtins<'gc>(mc: &Mutation<'gc>, ctx: &mut impl VmRuntimeCtx) -> Value<
let self_ref_thunk = Gc::new(mc, RefLock::new(ThunkState::Blackhole));
let sym = ctx.intern_string("builtins");
entries.push((sym, Value::new_gc(self_ref_thunk)));
entries.push((sym, Value::new(self_ref_thunk)));
entries.sort_by_key(|(k, _)| *k);
let builtins_set = Gc::new(mc, AttrSet::from_sorted_unchecked(entries));
let builtins_value = Value::new_gc(builtins_set);
let builtins_value = Value::new(builtins_set);
*self_ref_thunk.borrow_mut(mc) =
ThunkState::Evaluated(builtins_value.restrict().expect("builtins is not a thunk"));
builtins_value
@@ -125,8 +119,8 @@ impl<'gc> Vm<'gc> {
scope_slots: Vec::new(),
builtins,
empty_list: Value::new_gc(Gc::new(mc, List::default())),
empty_attrs: Value::new_gc(Gc::new(mc, AttrSet::default())),
empty_list: Value::new(Gc::new(mc, List::default())),
empty_attrs: Value::new(Gc::new(mc, AttrSet::default())),
force_mode,
@@ -202,7 +196,7 @@ impl<'gc> Machine<'gc> for Vm<'gc> {
mc: &Mutation<'gc>,
resume_pc: usize,
) -> Step {
let Some(thunk) = self.peek(depth).as_gc::<Thunk>() else {
let Some(thunk) = self.peek(depth).downcast::<Thunk>() else {
return Step::Continue(());
};
let mut state = thunk.borrow_mut(mc);