blob: 9e160a9333e29953180ebb66a52fe81ff90ea93f [file] [log] [blame]
// Copyright 2019 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 cuego_test
import (
"fmt"
"cuelang.org/go/cuego"
)
func ExampleComplete_structTag() {
type Sum struct {
A int `cue:"C-B" json:",omitempty"`
B int `cue:"C-A" json:",omitempty"`
C int `cue:"A+B" json:",omitempty"`
}
a := Sum{A: 1, B: 5}
err := cuego.Complete(&a)
fmt.Printf("completed: %#v (err: %v)\n", a, err)
a = Sum{A: 2, C: 8}
err = cuego.Complete(&a)
fmt.Printf("completed: %#v (err: %v)\n", a, err)
a = Sum{A: 2, B: 3, C: 8}
err = cuego.Complete(&a)
fmt.Println(err)
//Output:
// completed: cuego_test.Sum{A:1, B:5, C:6} (err: <nil>)
// completed: cuego_test.Sum{A:2, B:6, C:8} (err: <nil>)
// empty disjunction: invalid operation null & {A: 2, B: 3, C: 8} (mismatched types null and struct)
}
func ExampleConstrain() {
type Config struct {
Filename string
OptFile string `json:",omitempty"`
MaxCount int
MinCount int
// TODO: show a field with time.Time
}
err := cuego.Constrain(&Config{}, `{
jsonFile = =~".json$"
// Filename must be defined and have a .json extension
Filename: jsonFile
// OptFile must be undefined or be a file name with a .json extension
OptFile?: jsonFile
MinCount: >0 & <=MaxCount
MaxCount: <=10_000
}`)
fmt.Println("error:", err)
fmt.Println("validate:", cuego.Validate(&Config{
Filename: "foo.json",
MaxCount: 1200,
MinCount: 39,
}))
fmt.Println("validate:", cuego.Validate(&Config{
Filename: "foo.json",
MaxCount: 12,
MinCount: 39,
}))
fmt.Println("validate:", cuego.Validate(&Config{
Filename: "foo.jso",
MaxCount: 120,
MinCount: 39,
}))
//Output:
// error: <nil>
// validate: <nil>
// validate: invalid value 39 (out of bound <=12)
// validate: invalid value "foo.jso" (does not match =~".json$")
}