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internal/rosa/azalea: implement nil identifier

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This also implements a nil-capable string type.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
cat
2026-08-10 21:36:21 +09:00
parent f1ffb180bc
commit 7d86e19c07
2 changed files with 128 additions and 11 deletions
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internal/rosa/azalea/evaluate_test.go
+69 -5
View File
@@ -100,15 +100,79 @@ func TestEvaluate(t *testing.T) {
Err: UndefinedError("f"),
}},
{"error wrap deep", `f { v = nil; }`, makeStackCheck(func(
{"error wrap deep", `f { v = nonexistent; }`, makeStackCheck(func(
FArgs,
) (any, error) {
panic("unreachable")
}), "", EvaluationError{
Expr: Ident("nil"),
Err: UndefinedError("nil"),
Expr: Ident("nonexistent"),
Err: UndefinedError("nonexistent"),
}},
{"nil", `f { v = nil; }`, checkArgs(FArgs{
{K: unique.Make(Ident("v")), V: Nil{}},
}), "\xfd", nil},
{"apply nil string", `f { v = nil; }`, makeStackCheck(func(
args FArgs,
) (v any, err error) {
var s string
err = args.Apply(map[unique.Handle[Ident]]any{
unique.Make(Ident("v")): &s,
})
v = s
return
}), "", EvaluationError{
Expr: Func{
Ident: Ident("f"),
Args: []Arg{
{K: []Ident{"v"}, V: Val{Ident("nil")}},
},
},
Err: NilError{Type: reflect.TypeFor[string]()},
}},
{"apply nil AString", `f { v = nil; }`, makeStackCheck(func(
args FArgs,
) (v any, err error) {
s := AString{}
err = args.Apply(map[unique.Handle[Ident]]any{
unique.Make(Ident("v")): &s,
})
v = s.V
if !s.Nil {
err = fmt.Errorf("got non-nil string %q", s.V)
}
return
}), "", nil},
{"apply AString", `f { v = "\xfd"; }`, makeStackCheck(func(
args FArgs,
) (v any, err error) {
s := AString{}
err = args.Apply(map[unique.Handle[Ident]]any{
unique.Make(Ident("v")): &s,
})
v = s.V
if s.Nil {
err = fmt.Errorf("unexpected nil %q", s.V)
}
return
}), "\xfd", nil},
{"apply nil", `f { v = nil; }`, makeStackCheck(func(
args FArgs,
) (v any, err error) {
s := make([]struct{}, 9)
err = args.Apply(map[unique.Handle[Ident]]any{
unique.Make(Ident("v")): &s,
})
if s != nil {
err = fmt.Errorf("got non-nil value %#v", s)
}
return
}), "", nil},
{"common inputs", `package name { inputs, v = []; }`, nil, "", EvaluationError{
Expr: Func{
Ident: Ident("name"),
@@ -214,8 +278,8 @@ func TestEvaluate(t *testing.T) {
}
var errEquals bool
if _, ok := errors.AsType[TypeError](err); ok {
errEquals = errors.Is(err, tc.err)
if e, ok := errors.AsType[TypeError](err); ok {
errEquals = e.Is(tc.err)
} else {
errEquals = reflect.DeepEqual(err, tc.err)
}