// Copyright 2020 CUE Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package runtime

import (
	"reflect"

	"cuelang.org/go/cue/ast"
	"cuelang.org/go/internal/core/adt"
)

func (x *Runtime) StoreType(t reflect.Type, src ast.Expr, expr adt.Expr) {
	if expr == nil {
		x.index.StoreType(t, src)
	} else {
		x.index.StoreType(t, expr)
	}
}

func (x *Runtime) LoadType(t reflect.Type) (src ast.Expr, expr adt.Expr, ok bool) {
	v, ok := x.index.LoadType(t)
	if ok {
		switch x := v.(type) {
		case ast.Expr:
			return x, nil, true
		case adt.Expr:
			src, _ = x.Source().(ast.Expr)
			return src, x, true
		}
	}
	return nil, nil, false
}

func (x *index) StoreType(t reflect.Type, v interface{}) {
	x.typeCache.Store(t, v)
}

func (x *index) LoadType(t reflect.Type) (v interface{}, ok bool) {
	v, ok = x.typeCache.Load(t)
	return v, ok
}