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Diffstat (limited to 'dependencies/pkg/mod/go.uber.org/zap@v1.23.0/array_go118.go')
| -rw-r--r-- | dependencies/pkg/mod/go.uber.org/zap@v1.23.0/array_go118.go | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/go.uber.org/zap@v1.23.0/array_go118.go b/dependencies/pkg/mod/go.uber.org/zap@v1.23.0/array_go118.go new file mode 100644 index 0000000..ea94f9d --- /dev/null +++ b/dependencies/pkg/mod/go.uber.org/zap@v1.23.0/array_go118.go @@ -0,0 +1,156 @@ +// Copyright (c) 2022 Uber Technologies, Inc. +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +//go:build go1.18 +// +build go1.18 + +package zap + +import ( + "fmt" + + "go.uber.org/zap/zapcore" +) + +// Objects constructs a field with the given key, holding a list of the +// provided objects that can be marshaled by Zap. +// +// Note that these objects must implement zapcore.ObjectMarshaler directly. +// That is, if you're trying to marshal a []Request, the MarshalLogObject +// method must be declared on the Request type, not its pointer (*Request). +// If it's on the pointer, use ObjectValues. +// +// Given an object that implements MarshalLogObject on the value receiver, you +// can log a slice of those objects with Objects like so: +// +// type Author struct{ ... } +// func (a Author) MarshalLogObject(enc zapcore.ObjectEncoder) error +// +// var authors []Author = ... +// logger.Info("loading article", zap.Objects("authors", authors)) +// +// Similarly, given a type that implements MarshalLogObject on its pointer +// receiver, you can log a slice of pointers to that object with Objects like +// so: +// +// type Request struct{ ... } +// func (r *Request) MarshalLogObject(enc zapcore.ObjectEncoder) error +// +// var requests []*Request = ... +// logger.Info("sending requests", zap.Objects("requests", requests)) +// +// If instead, you have a slice of values of such an object, use the +// ObjectValues constructor. +// +// var requests []Request = ... +// logger.Info("sending requests", zap.ObjectValues("requests", requests)) +func Objects[T zapcore.ObjectMarshaler](key string, values []T) Field { + return Array(key, objects[T](values)) +} + +type objects[T zapcore.ObjectMarshaler] []T + +func (os objects[T]) MarshalLogArray(arr zapcore.ArrayEncoder) error { + for _, o := range os { + if err := arr.AppendObject(o); err != nil { + return err + } + } + return nil +} + +// objectMarshalerPtr is a constraint that specifies that the given type +// implements zapcore.ObjectMarshaler on a pointer receiver. +type objectMarshalerPtr[T any] interface { + *T + zapcore.ObjectMarshaler +} + +// ObjectValues constructs a field with the given key, holding a list of the +// provided objects, where pointers to these objects can be marshaled by Zap. +// +// Note that pointers to these objects must implement zapcore.ObjectMarshaler. +// That is, if you're trying to marshal a []Request, the MarshalLogObject +// method must be declared on the *Request type, not the value (Request). +// If it's on the value, use Objects. +// +// Given an object that implements MarshalLogObject on the pointer receiver, +// you can log a slice of those objects with ObjectValues like so: +// +// type Request struct{ ... } +// func (r *Request) MarshalLogObject(enc zapcore.ObjectEncoder) error +// +// var requests []Request = ... +// logger.Info("sending requests", zap.ObjectValues("requests", requests)) +// +// If instead, you have a slice of pointers of such an object, use the Objects +// field constructor. +// +// var requests []*Request = ... +// logger.Info("sending requests", zap.Objects("requests", requests)) +func ObjectValues[T any, P objectMarshalerPtr[T]](key string, values []T) Field { + return Array(key, objectValues[T, P](values)) +} + +type objectValues[T any, P objectMarshalerPtr[T]] []T + +func (os objectValues[T, P]) MarshalLogArray(arr zapcore.ArrayEncoder) error { + for i := range os { + // It is necessary for us to explicitly reference the "P" type. + // We cannot simply pass "&os[i]" to AppendObject because its type + // is "*T", which the type system does not consider as + // implementing ObjectMarshaler. + // Only the type "P" satisfies ObjectMarshaler, which we have + // to convert "*T" to explicitly. + var p P = &os[i] + if err := arr.AppendObject(p); err != nil { + return err + } + } + return nil +} + +// Stringers constructs a field with the given key, holding a list of the +// output provided by the value's String method +// +// Given an object that implements String on the value receiver, you +// can log a slice of those objects with Objects like so: +// +// type Request struct{ ... } +// func (a Request) String() string +// +// var requests []Request = ... +// logger.Info("sending requests", zap.Stringers("requests", requests)) +// +// Note that these objects must implement fmt.Stringer directly. +// That is, if you're trying to marshal a []Request, the String method +// must be declared on the Request type, not its pointer (*Request). +func Stringers[T fmt.Stringer](key string, values []T) Field { + return Array(key, stringers[T](values)) +} + +type stringers[T fmt.Stringer] []T + +func (os stringers[T]) MarshalLogArray(arr zapcore.ArrayEncoder) error { + for _, o := range os { + arr.AppendString(o.String()) + } + return nil +} |