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// Copyright © 2014 Steve Francia <spf@spf13.com>.
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
package cast
import (
"reflect"
"slices"
)
var kindNames = []string{
reflect.String: "string",
reflect.Bool: "bool",
reflect.Int: "int",
reflect.Int8: "int8",
reflect.Int16: "int16",
reflect.Int32: "int32",
reflect.Int64: "int64",
reflect.Uint: "uint",
reflect.Uint8: "uint8",
reflect.Uint16: "uint16",
reflect.Uint32: "uint32",
reflect.Uint64: "uint64",
reflect.Float32: "float32",
reflect.Float64: "float64",
}
var kinds = map[reflect.Kind]func(reflect.Value) any{
reflect.String: func(v reflect.Value) any { return v.String() },
reflect.Bool: func(v reflect.Value) any { return v.Bool() },
reflect.Int: func(v reflect.Value) any { return int(v.Int()) },
reflect.Int8: func(v reflect.Value) any { return int8(v.Int()) },
reflect.Int16: func(v reflect.Value) any { return int16(v.Int()) },
reflect.Int32: func(v reflect.Value) any { return int32(v.Int()) },
reflect.Int64: func(v reflect.Value) any { return v.Int() },
reflect.Uint: func(v reflect.Value) any { return uint(v.Uint()) },
reflect.Uint8: func(v reflect.Value) any { return uint8(v.Uint()) },
reflect.Uint16: func(v reflect.Value) any { return uint16(v.Uint()) },
reflect.Uint32: func(v reflect.Value) any { return uint32(v.Uint()) },
reflect.Uint64: func(v reflect.Value) any { return v.Uint() },
reflect.Float32: func(v reflect.Value) any { return float32(v.Float()) },
reflect.Float64: func(v reflect.Value) any { return v.Float() },
}
// resolveAlias attempts to resolve a named type to its underlying basic type (if possible).
//
// Pointers are expected to be indirected by this point.
func resolveAlias(i any) (any, bool) {
if i == nil {
return nil, false
}
t := reflect.TypeOf(i)
// Not a named type
if t.Name() == "" || slices.Contains(kindNames, t.Name()) {
return i, false
}
resolve, ok := kinds[t.Kind()]
if !ok { // Not a supported kind
return i, false
}
v := reflect.ValueOf(i)
return resolve(v), true
}
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