blob: 5e0586476f3263b9b0d2c15dd7476b39e0d98966 [file] [log] [blame]
// Copyright 2021 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 value contains functions for converting values to internal types
// and various other Value-related utilities.
package value
import (
"strings"
"cuelang.org/go/cue"
"cuelang.org/go/cue/errors"
"cuelang.org/go/internal/core/adt"
"cuelang.org/go/internal/core/convert"
"cuelang.org/go/internal/core/eval"
"cuelang.org/go/internal/core/runtime"
"cuelang.org/go/internal/types"
)
func ConvertToRuntime(c *cue.Context) *cue.Runtime {
return (*cue.Runtime)(c)
}
func ConvertToContext(r *cue.Runtime) *cue.Context {
(*runtime.Runtime)(r).Init()
return (*cue.Context)(r)
}
func ToInternal(v cue.Value) (*runtime.Runtime, *adt.Vertex) {
var t types.Value
v.Core(&t)
return t.R, t.V
}
// Make wraps cue.MakeValue.
func Make(ctx *adt.OpContext, v adt.Value) cue.Value {
return (*cue.Context)(ctx.Impl().(*runtime.Runtime)).Encode(v)
}
func MakeError(r *runtime.Runtime, err errors.Error) cue.Value {
b := &adt.Bottom{Err: err}
node := &adt.Vertex{BaseValue: b}
node.UpdateStatus(adt.Finalized)
node.AddConjunct(adt.MakeRootConjunct(nil, b))
return (*cue.Context)(r).Encode(node)
}
// UnifyBuiltin returns the given Value unified with the given builtin template.
func UnifyBuiltin(v cue.Value, kind string) cue.Value {
p := strings.Split(kind, ".")
pkg, name := p[0], p[1]
s, _ := runtime.SharedRuntime.LoadImport(pkg)
if s == nil {
return v
}
ctx := v.Context()
a := s.Lookup((*runtime.Runtime)(ctx).Label(name, false))
if a == nil {
return v
}
return v.Unify(ctx.Encode(a))
}
func FromGoValue(r *cue.Context, x interface{}, nilIsTop bool) cue.Value {
rt := (*runtime.Runtime)(r)
rt.Init()
ctx := eval.NewContext(rt, nil)
v := convert.GoValueToValue(ctx, x, nilIsTop)
n := adt.ToVertex(v)
return r.Encode(n)
}
func FromGoType(r *cue.Context, x interface{}) cue.Value {
rt := (*runtime.Runtime)(r)
rt.Init()
ctx := eval.NewContext(rt, nil)
expr, err := convert.GoTypeToExpr(ctx, x)
if err != nil {
expr = &adt.Bottom{Err: err}
}
n := &adt.Vertex{}
n.AddConjunct(adt.MakeRootConjunct(nil, expr))
return r.Encode(n)
}