interp: Improve type normalization and use it for toyaml and totoml

Use smallest int type for int64, uint6 and *big.Int

Fixes integer serialization for yaml and toml for small integers, othweise
they will end up as strings.

internal/gojqextra/totype.go

@@ -137,14 +137,33 @@ func ToGoJQValue(v any) (any, bool) {
 	case int:
 		return vv, true
 	case int64:
+		if vv >= math.MinInt && vv <= math.MaxInt {
+			return int(vv), true
+		}
 		return big.NewInt(vv), true
 	case uint64:
+		if vv <= math.MaxInt {
+			return int(vv), true
+		}
 		return new(big.Int).SetUint64(vv), true
 	case float32:
 		return float64(vv), true
 	case float64:
 		return vv, true
 	case *big.Int:
+		if vv.IsInt64() {
+			vv := vv.Int64()
+			if vv >= math.MinInt && vv <= math.MaxInt {
+				return int(vv), true
+			}
+			return vv, true
+		} else if vv.IsUint64() {
+			vv := vv.Uint64()
+			if vv <= math.MaxInt {
+				return int(vv), true
+			}
+			return vv, true
+		}
 		return vv, true
 	case string:
 		return vv, true

pkg/interp/encoding.go

@@ -717,7 +717,7 @@ func init() {
 	})
 
 	addFunc("_toyaml", func(c any) any {
-		b, err := yaml.Marshal(c)
+		b, err := yaml.Marshal(norm(c))
 		if err != nil {
 			return err
 		}
@@ -734,7 +734,7 @@ func init() {
 
 	addFunc("_totoml", func(c map[string]any) any {
 		b := &bytes.Buffer{}
-		if err := toml.NewEncoder(b).Encode(c); err != nil {
+		if err := toml.NewEncoder(b).Encode(norm(c)); err != nil {
 			return err
 		}
 		return b.String()

pkg/interp/testdata/encoding/toml.fqtest

@@ -1,4 +1,5 @@
 # toml does not support null in arrays
+# TODO: add uint64 norm test
 $ fq -rRs 'fromjson[] | (walk(if type == "array" then map(select(. != null)) end) | try (totoml | ., fromtoml) catch .), "----"' variants.json
 
 {}

pkg/interp/testdata/encoding/yaml.fqtest

@@ -1,3 +1,4 @@
+# TODO: add uint64 norm test
 $ fq -rRs 'fromjson[] | (try (toyaml | ., fromyaml) catch .), "----"' variants.json
 null