github.com/go-spring/spring-base@v1.1.3/util/panic.go (about)

     1  /*
     2   * Copyright 2012-2019 the original author or authors.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *      https://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package util
    18  
    19  import (
    20  	"fmt"
    21  )
    22  
    23  // PanicCond panic condition.
    24  type PanicCond struct {
    25  	fn func() interface{}
    26  }
    27  
    28  // When throws a panic when `isPanic` is true.
    29  func (p *PanicCond) When(isPanic bool) {
    30  	if isPanic {
    31  		panic(p.fn())
    32  	}
    33  }
    34  
    35  // NewPanicCond returns a panic condition.
    36  func NewPanicCond(fn func() interface{}) *PanicCond {
    37  	return &PanicCond{fn}
    38  }
    39  
    40  // Panic returns a panic condition that throws an error.
    41  func Panic(err interface{}) *PanicCond {
    42  	return NewPanicCond(func() interface{} { return err })
    43  }
    44  
    45  // Panicf returns a panic condition that throws a formatted error.
    46  func Panicf(format string, a ...interface{}) *PanicCond {
    47  	return NewPanicCond(func() interface{} { return fmt.Errorf(format, a...) })
    48  }