implement Path type

2026-05-16 19:51:00 +08:00
parent 3d07f89afe
commit 21899f7380
8 changed files with 209 additions and 26 deletions
@@ -1 +1,53 @@
+use fix_common::StringId;
+use fix_error::Error;
+use gc_arena::Mutation;

+use crate::bytecode_reader::BytecodeReader;
+use crate::value::*;
+use crate::{Step, Vm, VmRuntimeCtx};
+
+impl<'gc> Vm<'gc> {
+    pub(crate) fn primop_to_string(
+        &mut self,
+        _ctx: &mut impl VmRuntimeCtx,
+        reader: &mut BytecodeReader<'_>,
+        mc: &Mutation<'gc>,
+    ) -> Step {
+        let val = self.force_and_retry::<StrictValue>(reader, mc)?;
+        if val.is::<StringId>() || val.is::<NixString>() {
+            return self.return_from_primop(val.relax(), reader);
+        }
+        if let Some(p) = val.as_inline::<Path>() {
+            return self.return_from_primop(Value::new_inline(p.0), reader);
+        }
+        //  TODO: derivations / `__toString` / `outPath`,
+        //        numbers, lists.
+        self.finish_err(Error::eval_error(format!(
+            "cannot coerce {} to a string",
+            val.ty()
+        )))
+    }
+
+    pub(crate) fn primop_type_of(
+        &mut self,
+        ctx: &mut impl VmRuntimeCtx,
+        reader: &mut BytecodeReader<'_>,
+        mc: &Mutation<'gc>,
+    ) -> Step {
+        let val = self.force_and_retry::<StrictValue>(reader, mc)?;
+        let name: &str = match val.ty() {
+            NixType::Int => "int",
+            NixType::Float => "float",
+            NixType::Bool => "bool",
+            NixType::Null => "null",
+            NixType::String => "string",
+            NixType::Path => "path",
+            NixType::AttrSet => "set",
+            NixType::List => "list",
+            NixType::Closure | NixType::PrimOp | NixType::PrimOpApp => "lambda",
+            NixType::Thunk => unreachable!("forced"),
+        };
+        let sid = ctx.intern_string(name);
+        self.return_from_primop(Value::new_inline(sid), reader)
+    }
+}