mirror of
https://github.com/strongdm/comply
synced 2024-11-16 21:04:54 +00:00
7468711b3b
Releases after github.com/xanzy/go-gitlab@v0.31.0 introduce breaking changes to the NewClient call. Addresses #94
372 lines
11 KiB
Go
372 lines
11 KiB
Go
// Copyright 2015-2018 trivago N.V.
|
|
//
|
|
// 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 treflect
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
"unsafe"
|
|
)
|
|
|
|
// GetMissingMethods checks if a given object implements all methods of a
|
|
// given interface. It returns the interface coverage [0..1] as well as an array
|
|
// of error messages. If the interface is correctly implemented the coverage is
|
|
// 1 and the error message array is empty.
|
|
func GetMissingMethods(objType reflect.Type, ifaceType reflect.Type) (float32, []string) {
|
|
missing := []string{}
|
|
if objType.Implements(ifaceType) {
|
|
return 1.0, missing
|
|
}
|
|
|
|
methodCount := ifaceType.NumMethod()
|
|
for mIdx := 0; mIdx < methodCount; mIdx++ {
|
|
ifaceMethod := ifaceType.Method(mIdx)
|
|
objMethod, exists := objType.MethodByName(ifaceMethod.Name)
|
|
signatureMismatch := false
|
|
|
|
switch {
|
|
case !exists:
|
|
missing = append(missing, fmt.Sprintf("Missing: \"%s\" %v", ifaceMethod.Name, ifaceMethod.Type))
|
|
continue // ### continue, error found ###
|
|
|
|
case ifaceMethod.Type.NumOut() != objMethod.Type.NumOut():
|
|
signatureMismatch = true
|
|
|
|
case ifaceMethod.Type.NumIn()+1 != objMethod.Type.NumIn():
|
|
signatureMismatch = true
|
|
|
|
default:
|
|
for oIdx := 0; !signatureMismatch && oIdx < ifaceMethod.Type.NumOut(); oIdx++ {
|
|
signatureMismatch = ifaceMethod.Type.Out(oIdx) != objMethod.Type.Out(oIdx)
|
|
}
|
|
for iIdx := 0; !signatureMismatch && iIdx < ifaceMethod.Type.NumIn(); iIdx++ {
|
|
signatureMismatch = ifaceMethod.Type.In(iIdx) != objMethod.Type.In(iIdx+1)
|
|
}
|
|
}
|
|
|
|
if signatureMismatch {
|
|
missing = append(missing, fmt.Sprintf("Invalid: \"%s\" %v is not %v", ifaceMethod.Name, objMethod.Type, ifaceMethod.Type))
|
|
}
|
|
}
|
|
|
|
return float32(methodCount-len(missing)) / float32(methodCount), missing
|
|
}
|
|
|
|
// Int64 converts any signed number type to an int64.
|
|
// The second parameter is returned as false if a non-number type was given.
|
|
func Int64(v interface{}) (int64, bool) {
|
|
|
|
switch reflect.TypeOf(v).Kind() {
|
|
case reflect.Int:
|
|
return int64(v.(int)), true
|
|
case reflect.Int8:
|
|
return int64(v.(int8)), true
|
|
case reflect.Int16:
|
|
return int64(v.(int16)), true
|
|
case reflect.Int32:
|
|
return int64(v.(int32)), true
|
|
case reflect.Int64:
|
|
return v.(int64), true
|
|
case reflect.Float32:
|
|
return int64(v.(float32)), true
|
|
case reflect.Float64:
|
|
return int64(v.(float64)), true
|
|
}
|
|
|
|
return 0, false
|
|
}
|
|
|
|
// Uint64 converts any unsigned number type to an uint64.
|
|
// The second parameter is returned as false if a non-number type was given.
|
|
func Uint64(v interface{}) (uint64, bool) {
|
|
|
|
switch reflect.TypeOf(v).Kind() {
|
|
case reflect.Uint:
|
|
return uint64(v.(uint)), true
|
|
case reflect.Uint8:
|
|
return uint64(v.(uint8)), true
|
|
case reflect.Uint16:
|
|
return uint64(v.(uint16)), true
|
|
case reflect.Uint32:
|
|
return uint64(v.(uint32)), true
|
|
case reflect.Uint64:
|
|
return v.(uint64), true
|
|
}
|
|
|
|
return 0, false
|
|
}
|
|
|
|
// Float32 converts any number type to an float32.
|
|
// The second parameter is returned as false if a non-number type was given.
|
|
func Float32(v interface{}) (float32, bool) {
|
|
|
|
switch reflect.TypeOf(v).Kind() {
|
|
case reflect.Int:
|
|
return float32(v.(int)), true
|
|
case reflect.Uint:
|
|
return float32(v.(uint)), true
|
|
case reflect.Int8:
|
|
return float32(v.(int8)), true
|
|
case reflect.Uint8:
|
|
return float32(v.(uint8)), true
|
|
case reflect.Int16:
|
|
return float32(v.(int16)), true
|
|
case reflect.Uint16:
|
|
return float32(v.(uint16)), true
|
|
case reflect.Int32:
|
|
return float32(v.(int32)), true
|
|
case reflect.Uint32:
|
|
return float32(v.(uint32)), true
|
|
case reflect.Int64:
|
|
return float32(v.(int64)), true
|
|
case reflect.Uint64:
|
|
return float32(v.(uint64)), true
|
|
case reflect.Float32:
|
|
return v.(float32), true
|
|
case reflect.Float64:
|
|
return float32(v.(float64)), true
|
|
}
|
|
|
|
return 0, false
|
|
}
|
|
|
|
// Float64 converts any number type to an float64.
|
|
// The second parameter is returned as false if a non-number type was given.
|
|
func Float64(v interface{}) (float64, bool) {
|
|
|
|
switch reflect.TypeOf(v).Kind() {
|
|
case reflect.Int:
|
|
return float64(v.(int)), true
|
|
case reflect.Uint:
|
|
return float64(v.(uint)), true
|
|
case reflect.Int8:
|
|
return float64(v.(int8)), true
|
|
case reflect.Uint8:
|
|
return float64(v.(uint8)), true
|
|
case reflect.Int16:
|
|
return float64(v.(int16)), true
|
|
case reflect.Uint16:
|
|
return float64(v.(uint16)), true
|
|
case reflect.Int32:
|
|
return float64(v.(int32)), true
|
|
case reflect.Uint32:
|
|
return float64(v.(uint32)), true
|
|
case reflect.Int64:
|
|
return float64(v.(int64)), true
|
|
case reflect.Uint64:
|
|
return float64(v.(uint64)), true
|
|
case reflect.Float32:
|
|
return float64(v.(float32)), true
|
|
case reflect.Float64:
|
|
return v.(float64), true
|
|
}
|
|
|
|
return 0, false
|
|
}
|
|
|
|
// RemovePtrFromType will return the type of t and strips away any pointer(s)
|
|
// in front of the actual type.
|
|
func RemovePtrFromType(t interface{}) reflect.Type {
|
|
var v reflect.Type
|
|
if rt, isType := t.(reflect.Type); isType {
|
|
v = rt
|
|
} else {
|
|
v = reflect.TypeOf(t)
|
|
}
|
|
for v.Kind() == reflect.Ptr {
|
|
v = v.Elem()
|
|
}
|
|
return v
|
|
}
|
|
|
|
// RemovePtrFromValue will return the value of t and strips away any pointer(s)
|
|
// in front of the actual type.
|
|
func RemovePtrFromValue(t interface{}) reflect.Value {
|
|
var v reflect.Value
|
|
if rv, isValue := t.(reflect.Value); isValue {
|
|
v = rv
|
|
} else {
|
|
v = reflect.ValueOf(t)
|
|
}
|
|
for v.Type().Kind() == reflect.Ptr {
|
|
v = v.Elem()
|
|
}
|
|
return v
|
|
}
|
|
|
|
// UnsafeCopy will copy data from src to dst while ignoring type information.
|
|
// Both types need to be of the same size and dst and src have to be pointers.
|
|
// UnsafeCopy will panic if these requirements are not met.
|
|
func UnsafeCopy(dst, src interface{}) {
|
|
dstValue := reflect.ValueOf(dst)
|
|
srcValue := reflect.ValueOf(src)
|
|
UnsafeCopyValue(dstValue, srcValue)
|
|
}
|
|
|
|
// UnsafeCopyValue will copy data from src to dst while ignoring type
|
|
// information. Both types need to be of the same size or this function will
|
|
// panic. Also both types must support dereferencing via reflect.Elem()
|
|
func UnsafeCopyValue(dstValue reflect.Value, srcValue reflect.Value) {
|
|
dstType := dstValue.Elem().Type()
|
|
srcType := srcValue.Type()
|
|
|
|
var srcPtr uintptr
|
|
if srcValue.Kind() != reflect.Ptr {
|
|
// If we don't get a pointer to our source data we need to forcefully
|
|
// retrieve it by accessing the interface pointer. This is ok as we
|
|
// only read from it.
|
|
iface := srcValue.Interface()
|
|
srcPtr = reflect.ValueOf(&iface).Elem().InterfaceData()[1] // Pointer to data
|
|
} else {
|
|
srcType = srcValue.Elem().Type()
|
|
srcPtr = srcValue.Pointer()
|
|
}
|
|
|
|
if dstType.Size() != srcType.Size() {
|
|
panic("Type size mismatch between " + dstType.String() + " and " + srcType.String())
|
|
}
|
|
|
|
dstAsSlice := *(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{
|
|
Data: dstValue.Pointer(),
|
|
Len: int(dstType.Size()),
|
|
Cap: int(dstType.Size()),
|
|
}))
|
|
|
|
srcAsSlice := *(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{
|
|
Data: srcPtr,
|
|
Len: int(srcType.Size()),
|
|
Cap: int(srcType.Size()),
|
|
}))
|
|
|
|
copy(dstAsSlice, srcAsSlice)
|
|
}
|
|
|
|
// SetMemberByName sets member name of the given pointer-to-struct to the data
|
|
// passed to this function. The member may be private, too.
|
|
func SetMemberByName(ptrToStruct interface{}, name string, data interface{}) {
|
|
structVal := reflect.Indirect(reflect.ValueOf(ptrToStruct))
|
|
member := structVal.FieldByName(name)
|
|
|
|
SetValue(member, data)
|
|
}
|
|
|
|
// SetMemberByIndex sets member idx of the given pointer-to-struct to the data
|
|
// passed to this function. The member may be private, too.
|
|
func SetMemberByIndex(ptrToStruct interface{}, idx int, data interface{}) {
|
|
structVal := reflect.Indirect(reflect.ValueOf(ptrToStruct))
|
|
member := structVal.Field(idx)
|
|
|
|
SetValue(member, data)
|
|
}
|
|
|
|
// SetValue sets an addressable value to the data passed to this function.
|
|
// In contrast to golangs reflect package this will also work with private
|
|
// variables. Please note that this function may not support all types, yet.
|
|
func SetValue(member reflect.Value, data interface{}) {
|
|
if member.CanSet() {
|
|
member.Set(reflect.ValueOf(data).Convert(member.Type()))
|
|
return // ### return, easy way ###
|
|
}
|
|
|
|
if !member.CanAddr() {
|
|
panic("SetValue requires addressable member type")
|
|
}
|
|
|
|
ptrToMember := unsafe.Pointer(member.UnsafeAddr())
|
|
dataValue := reflect.ValueOf(data)
|
|
|
|
switch member.Kind() {
|
|
case reflect.Bool:
|
|
*(*bool)(ptrToMember) = dataValue.Bool()
|
|
|
|
case reflect.Uint:
|
|
*(*uint)(ptrToMember) = uint(dataValue.Uint())
|
|
|
|
case reflect.Uint8:
|
|
*(*uint8)(ptrToMember) = uint8(dataValue.Uint())
|
|
|
|
case reflect.Uint16:
|
|
*(*uint16)(ptrToMember) = uint16(dataValue.Uint())
|
|
|
|
case reflect.Uint32:
|
|
*(*uint32)(ptrToMember) = uint32(dataValue.Uint())
|
|
|
|
case reflect.Uint64:
|
|
*(*uint64)(ptrToMember) = dataValue.Uint()
|
|
|
|
case reflect.Int:
|
|
*(*int)(ptrToMember) = int(dataValue.Int())
|
|
|
|
case reflect.Int8:
|
|
*(*int8)(ptrToMember) = int8(dataValue.Int())
|
|
|
|
case reflect.Int16:
|
|
*(*int16)(ptrToMember) = int16(dataValue.Int())
|
|
|
|
case reflect.Int32:
|
|
*(*int32)(ptrToMember) = int32(dataValue.Int())
|
|
|
|
case reflect.Int64:
|
|
*(*int64)(ptrToMember) = dataValue.Int()
|
|
|
|
case reflect.Float32:
|
|
*(*float32)(ptrToMember) = float32(dataValue.Float())
|
|
|
|
case reflect.Float64:
|
|
*(*float64)(ptrToMember) = dataValue.Float()
|
|
|
|
case reflect.Complex64:
|
|
*(*complex64)(ptrToMember) = complex64(dataValue.Complex())
|
|
|
|
case reflect.Complex128:
|
|
*(*complex128)(ptrToMember) = dataValue.Complex()
|
|
|
|
case reflect.String:
|
|
*(*string)(ptrToMember) = dataValue.String()
|
|
|
|
case reflect.Map, reflect.Chan:
|
|
// Exploit the fact that "map" is actually "*runtime.hmap" and force
|
|
// overwrite that pointer in the passed struct.
|
|
// Same foes for "chan" which is actually "*runtime.hchan".
|
|
|
|
// Note: Assigning a map or channel to another variable does NOT copy
|
|
// the contents so copying the pointer follows go's standard behavior.
|
|
dataAsPtr := unsafe.Pointer(dataValue.Pointer())
|
|
*(**uintptr)(ptrToMember) = (*uintptr)(dataAsPtr)
|
|
|
|
case reflect.Interface:
|
|
// Interfaces are basically two pointers, see runtime.iface.
|
|
// We want to modify exactly that data, which is returned by
|
|
// the InterfaceData() method.
|
|
|
|
if dataValue.Kind() != reflect.Interface {
|
|
// A type reference was passed. In order to overwrite the memory
|
|
// Representation of an interface we need to generate it first.
|
|
// Reflect does not allow us to do that unless we use the
|
|
// InterfaceData method which exposes the internal representation
|
|
// of an interface.
|
|
interfaceData := reflect.ValueOf(&data).Elem().InterfaceData()
|
|
dataValue = reflect.ValueOf(interfaceData)
|
|
}
|
|
fallthrough
|
|
|
|
default:
|
|
// Complex types are assigned memcpy style.
|
|
// Note: This should not break the garbage collector although we cannot
|
|
// be 100% sure on this.
|
|
UnsafeCopyValue(member.Addr(), dataValue)
|
|
}
|
|
}
|