mirror of https://github.com/prometheus/prometheus
beorn7
8 years ago
7 changed files with 128 additions and 512 deletions
@ -1,484 +0,0 @@
|
||||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2012 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
// +build appengine js
|
||||
|
||||
// This file contains an implementation of proto field accesses using package reflect.
|
||||
// It is slower than the code in pointer_unsafe.go but it avoids package unsafe and can
|
||||
// be used on App Engine.
|
||||
|
||||
package proto |
||||
|
||||
import ( |
||||
"math" |
||||
"reflect" |
||||
) |
||||
|
||||
// A structPointer is a pointer to a struct.
|
||||
type structPointer struct { |
||||
v reflect.Value |
||||
} |
||||
|
||||
// toStructPointer returns a structPointer equivalent to the given reflect value.
|
||||
// The reflect value must itself be a pointer to a struct.
|
||||
func toStructPointer(v reflect.Value) structPointer { |
||||
return structPointer{v} |
||||
} |
||||
|
||||
// IsNil reports whether p is nil.
|
||||
func structPointer_IsNil(p structPointer) bool { |
||||
return p.v.IsNil() |
||||
} |
||||
|
||||
// Interface returns the struct pointer as an interface value.
|
||||
func structPointer_Interface(p structPointer, _ reflect.Type) interface{} { |
||||
return p.v.Interface() |
||||
} |
||||
|
||||
// A field identifies a field in a struct, accessible from a structPointer.
|
||||
// In this implementation, a field is identified by the sequence of field indices
|
||||
// passed to reflect's FieldByIndex.
|
||||
type field []int |
||||
|
||||
// toField returns a field equivalent to the given reflect field.
|
||||
func toField(f *reflect.StructField) field { |
||||
return f.Index |
||||
} |
||||
|
||||
// invalidField is an invalid field identifier.
|
||||
var invalidField = field(nil) |
||||
|
||||
// IsValid reports whether the field identifier is valid.
|
||||
func (f field) IsValid() bool { return f != nil } |
||||
|
||||
// field returns the given field in the struct as a reflect value.
|
||||
func structPointer_field(p structPointer, f field) reflect.Value { |
||||
// Special case: an extension map entry with a value of type T
|
||||
// passes a *T to the struct-handling code with a zero field,
|
||||
// expecting that it will be treated as equivalent to *struct{ X T },
|
||||
// which has the same memory layout. We have to handle that case
|
||||
// specially, because reflect will panic if we call FieldByIndex on a
|
||||
// non-struct.
|
||||
if f == nil { |
||||
return p.v.Elem() |
||||
} |
||||
|
||||
return p.v.Elem().FieldByIndex(f) |
||||
} |
||||
|
||||
// ifield returns the given field in the struct as an interface value.
|
||||
func structPointer_ifield(p structPointer, f field) interface{} { |
||||
return structPointer_field(p, f).Addr().Interface() |
||||
} |
||||
|
||||
// Bytes returns the address of a []byte field in the struct.
|
||||
func structPointer_Bytes(p structPointer, f field) *[]byte { |
||||
return structPointer_ifield(p, f).(*[]byte) |
||||
} |
||||
|
||||
// BytesSlice returns the address of a [][]byte field in the struct.
|
||||
func structPointer_BytesSlice(p structPointer, f field) *[][]byte { |
||||
return structPointer_ifield(p, f).(*[][]byte) |
||||
} |
||||
|
||||
// Bool returns the address of a *bool field in the struct.
|
||||
func structPointer_Bool(p structPointer, f field) **bool { |
||||
return structPointer_ifield(p, f).(**bool) |
||||
} |
||||
|
||||
// BoolVal returns the address of a bool field in the struct.
|
||||
func structPointer_BoolVal(p structPointer, f field) *bool { |
||||
return structPointer_ifield(p, f).(*bool) |
||||
} |
||||
|
||||
// BoolSlice returns the address of a []bool field in the struct.
|
||||
func structPointer_BoolSlice(p structPointer, f field) *[]bool { |
||||
return structPointer_ifield(p, f).(*[]bool) |
||||
} |
||||
|
||||
// String returns the address of a *string field in the struct.
|
||||
func structPointer_String(p structPointer, f field) **string { |
||||
return structPointer_ifield(p, f).(**string) |
||||
} |
||||
|
||||
// StringVal returns the address of a string field in the struct.
|
||||
func structPointer_StringVal(p structPointer, f field) *string { |
||||
return structPointer_ifield(p, f).(*string) |
||||
} |
||||
|
||||
// StringSlice returns the address of a []string field in the struct.
|
||||
func structPointer_StringSlice(p structPointer, f field) *[]string { |
||||
return structPointer_ifield(p, f).(*[]string) |
||||
} |
||||
|
||||
// Extensions returns the address of an extension map field in the struct.
|
||||
func structPointer_Extensions(p structPointer, f field) *XXX_InternalExtensions { |
||||
return structPointer_ifield(p, f).(*XXX_InternalExtensions) |
||||
} |
||||
|
||||
// ExtMap returns the address of an extension map field in the struct.
|
||||
func structPointer_ExtMap(p structPointer, f field) *map[int32]Extension { |
||||
return structPointer_ifield(p, f).(*map[int32]Extension) |
||||
} |
||||
|
||||
// NewAt returns the reflect.Value for a pointer to a field in the struct.
|
||||
func structPointer_NewAt(p structPointer, f field, typ reflect.Type) reflect.Value { |
||||
return structPointer_field(p, f).Addr() |
||||
} |
||||
|
||||
// SetStructPointer writes a *struct field in the struct.
|
||||
func structPointer_SetStructPointer(p structPointer, f field, q structPointer) { |
||||
structPointer_field(p, f).Set(q.v) |
||||
} |
||||
|
||||
// GetStructPointer reads a *struct field in the struct.
|
||||
func structPointer_GetStructPointer(p structPointer, f field) structPointer { |
||||
return structPointer{structPointer_field(p, f)} |
||||
} |
||||
|
||||
// StructPointerSlice the address of a []*struct field in the struct.
|
||||
func structPointer_StructPointerSlice(p structPointer, f field) structPointerSlice { |
||||
return structPointerSlice{structPointer_field(p, f)} |
||||
} |
||||
|
||||
// A structPointerSlice represents the address of a slice of pointers to structs
|
||||
// (themselves messages or groups). That is, v.Type() is *[]*struct{...}.
|
||||
type structPointerSlice struct { |
||||
v reflect.Value |
||||
} |
||||
|
||||
func (p structPointerSlice) Len() int { return p.v.Len() } |
||||
func (p structPointerSlice) Index(i int) structPointer { return structPointer{p.v.Index(i)} } |
||||
func (p structPointerSlice) Append(q structPointer) { |
||||
p.v.Set(reflect.Append(p.v, q.v)) |
||||
} |
||||
|
||||
var ( |
||||
int32Type = reflect.TypeOf(int32(0)) |
||||
uint32Type = reflect.TypeOf(uint32(0)) |
||||
float32Type = reflect.TypeOf(float32(0)) |
||||
int64Type = reflect.TypeOf(int64(0)) |
||||
uint64Type = reflect.TypeOf(uint64(0)) |
||||
float64Type = reflect.TypeOf(float64(0)) |
||||
) |
||||
|
||||
// A word32 represents a field of type *int32, *uint32, *float32, or *enum.
|
||||
// That is, v.Type() is *int32, *uint32, *float32, or *enum and v is assignable.
|
||||
type word32 struct { |
||||
v reflect.Value |
||||
} |
||||
|
||||
// IsNil reports whether p is nil.
|
||||
func word32_IsNil(p word32) bool { |
||||
return p.v.IsNil() |
||||
} |
||||
|
||||
// Set sets p to point at a newly allocated word with bits set to x.
|
||||
func word32_Set(p word32, o *Buffer, x uint32) { |
||||
t := p.v.Type().Elem() |
||||
switch t { |
||||
case int32Type: |
||||
if len(o.int32s) == 0 { |
||||
o.int32s = make([]int32, uint32PoolSize) |
||||
} |
||||
o.int32s[0] = int32(x) |
||||
p.v.Set(reflect.ValueOf(&o.int32s[0])) |
||||
o.int32s = o.int32s[1:] |
||||
return |
||||
case uint32Type: |
||||
if len(o.uint32s) == 0 { |
||||
o.uint32s = make([]uint32, uint32PoolSize) |
||||
} |
||||
o.uint32s[0] = x |
||||
p.v.Set(reflect.ValueOf(&o.uint32s[0])) |
||||
o.uint32s = o.uint32s[1:] |
||||
return |
||||
case float32Type: |
||||
if len(o.float32s) == 0 { |
||||
o.float32s = make([]float32, uint32PoolSize) |
||||
} |
||||
o.float32s[0] = math.Float32frombits(x) |
||||
p.v.Set(reflect.ValueOf(&o.float32s[0])) |
||||
o.float32s = o.float32s[1:] |
||||
return |
||||
} |
||||
|
||||
// must be enum
|
||||
p.v.Set(reflect.New(t)) |
||||
p.v.Elem().SetInt(int64(int32(x))) |
||||
} |
||||
|
||||
// Get gets the bits pointed at by p, as a uint32.
|
||||
func word32_Get(p word32) uint32 { |
||||
elem := p.v.Elem() |
||||
switch elem.Kind() { |
||||
case reflect.Int32: |
||||
return uint32(elem.Int()) |
||||
case reflect.Uint32: |
||||
return uint32(elem.Uint()) |
||||
case reflect.Float32: |
||||
return math.Float32bits(float32(elem.Float())) |
||||
} |
||||
panic("unreachable") |
||||
} |
||||
|
||||
// Word32 returns a reference to a *int32, *uint32, *float32, or *enum field in the struct.
|
||||
func structPointer_Word32(p structPointer, f field) word32 { |
||||
return word32{structPointer_field(p, f)} |
||||
} |
||||
|
||||
// A word32Val represents a field of type int32, uint32, float32, or enum.
|
||||
// That is, v.Type() is int32, uint32, float32, or enum and v is assignable.
|
||||
type word32Val struct { |
||||
v reflect.Value |
||||
} |
||||
|
||||
// Set sets *p to x.
|
||||
func word32Val_Set(p word32Val, x uint32) { |
||||
switch p.v.Type() { |
||||
case int32Type: |
||||
p.v.SetInt(int64(x)) |
||||
return |
||||
case uint32Type: |
||||
p.v.SetUint(uint64(x)) |
||||
return |
||||
case float32Type: |
||||
p.v.SetFloat(float64(math.Float32frombits(x))) |
||||
return |
||||
} |
||||
|
||||
// must be enum
|
||||
p.v.SetInt(int64(int32(x))) |
||||
} |
||||
|
||||
// Get gets the bits pointed at by p, as a uint32.
|
||||
func word32Val_Get(p word32Val) uint32 { |
||||
elem := p.v |
||||
switch elem.Kind() { |
||||
case reflect.Int32: |
||||
return uint32(elem.Int()) |
||||
case reflect.Uint32: |
||||
return uint32(elem.Uint()) |
||||
case reflect.Float32: |
||||
return math.Float32bits(float32(elem.Float())) |
||||
} |
||||
panic("unreachable") |
||||
} |
||||
|
||||
// Word32Val returns a reference to a int32, uint32, float32, or enum field in the struct.
|
||||
func structPointer_Word32Val(p structPointer, f field) word32Val { |
||||
return word32Val{structPointer_field(p, f)} |
||||
} |
||||
|
||||
// A word32Slice is a slice of 32-bit values.
|
||||
// That is, v.Type() is []int32, []uint32, []float32, or []enum.
|
||||
type word32Slice struct { |
||||
v reflect.Value |
||||
} |
||||
|
||||
func (p word32Slice) Append(x uint32) { |
||||
n, m := p.v.Len(), p.v.Cap() |
||||
if n < m { |
||||
p.v.SetLen(n + 1) |
||||
} else { |
||||
t := p.v.Type().Elem() |
||||
p.v.Set(reflect.Append(p.v, reflect.Zero(t))) |
||||
} |
||||
elem := p.v.Index(n) |
||||
switch elem.Kind() { |
||||
case reflect.Int32: |
||||
elem.SetInt(int64(int32(x))) |
||||
case reflect.Uint32: |
||||
elem.SetUint(uint64(x)) |
||||
case reflect.Float32: |
||||
elem.SetFloat(float64(math.Float32frombits(x))) |
||||
} |
||||
} |
||||
|
||||
func (p word32Slice) Len() int { |
||||
return p.v.Len() |
||||
} |
||||
|
||||
func (p word32Slice) Index(i int) uint32 { |
||||
elem := p.v.Index(i) |
||||
switch elem.Kind() { |
||||
case reflect.Int32: |
||||
return uint32(elem.Int()) |
||||
case reflect.Uint32: |
||||
return uint32(elem.Uint()) |
||||
case reflect.Float32: |
||||
return math.Float32bits(float32(elem.Float())) |
||||
} |
||||
panic("unreachable") |
||||
} |
||||
|
||||
// Word32Slice returns a reference to a []int32, []uint32, []float32, or []enum field in the struct.
|
||||
func structPointer_Word32Slice(p structPointer, f field) word32Slice { |
||||
return word32Slice{structPointer_field(p, f)} |
||||
} |
||||
|
||||
// word64 is like word32 but for 64-bit values.
|
||||
type word64 struct { |
||||
v reflect.Value |
||||
} |
||||
|
||||
func word64_Set(p word64, o *Buffer, x uint64) { |
||||
t := p.v.Type().Elem() |
||||
switch t { |
||||
case int64Type: |
||||
if len(o.int64s) == 0 { |
||||
o.int64s = make([]int64, uint64PoolSize) |
||||
} |
||||
o.int64s[0] = int64(x) |
||||
p.v.Set(reflect.ValueOf(&o.int64s[0])) |
||||
o.int64s = o.int64s[1:] |
||||
return |
||||
case uint64Type: |
||||
if len(o.uint64s) == 0 { |
||||
o.uint64s = make([]uint64, uint64PoolSize) |
||||
} |
||||
o.uint64s[0] = x |
||||
p.v.Set(reflect.ValueOf(&o.uint64s[0])) |
||||
o.uint64s = o.uint64s[1:] |
||||
return |
||||
case float64Type: |
||||
if len(o.float64s) == 0 { |
||||
o.float64s = make([]float64, uint64PoolSize) |
||||
} |
||||
o.float64s[0] = math.Float64frombits(x) |
||||
p.v.Set(reflect.ValueOf(&o.float64s[0])) |
||||
o.float64s = o.float64s[1:] |
||||
return |
||||
} |
||||
panic("unreachable") |
||||
} |
||||
|
||||
func word64_IsNil(p word64) bool { |
||||
return p.v.IsNil() |
||||
} |
||||
|
||||
func word64_Get(p word64) uint64 { |
||||
elem := p.v.Elem() |
||||
switch elem.Kind() { |
||||
case reflect.Int64: |
||||
return uint64(elem.Int()) |
||||
case reflect.Uint64: |
||||
return elem.Uint() |
||||
case reflect.Float64: |
||||
return math.Float64bits(elem.Float()) |
||||
} |
||||
panic("unreachable") |
||||
} |
||||
|
||||
func structPointer_Word64(p structPointer, f field) word64 { |
||||
return word64{structPointer_field(p, f)} |
||||
} |
||||
|
||||
// word64Val is like word32Val but for 64-bit values.
|
||||
type word64Val struct { |
||||
v reflect.Value |
||||
} |
||||
|
||||
func word64Val_Set(p word64Val, o *Buffer, x uint64) { |
||||
switch p.v.Type() { |
||||
case int64Type: |
||||
p.v.SetInt(int64(x)) |
||||
return |
||||
case uint64Type: |
||||
p.v.SetUint(x) |
||||
return |
||||
case float64Type: |
||||
p.v.SetFloat(math.Float64frombits(x)) |
||||
return |
||||
} |
||||
panic("unreachable") |
||||
} |
||||
|
||||
func word64Val_Get(p word64Val) uint64 { |
||||
elem := p.v |
||||
switch elem.Kind() { |
||||
case reflect.Int64: |
||||
return uint64(elem.Int()) |
||||
case reflect.Uint64: |
||||
return elem.Uint() |
||||
case reflect.Float64: |
||||
return math.Float64bits(elem.Float()) |
||||
} |
||||
panic("unreachable") |
||||
} |
||||
|
||||
func structPointer_Word64Val(p structPointer, f field) word64Val { |
||||
return word64Val{structPointer_field(p, f)} |
||||
} |
||||
|
||||
type word64Slice struct { |
||||
v reflect.Value |
||||
} |
||||
|
||||
func (p word64Slice) Append(x uint64) { |
||||
n, m := p.v.Len(), p.v.Cap() |
||||
if n < m { |
||||
p.v.SetLen(n + 1) |
||||
} else { |
||||
t := p.v.Type().Elem() |
||||
p.v.Set(reflect.Append(p.v, reflect.Zero(t))) |
||||
} |
||||
elem := p.v.Index(n) |
||||
switch elem.Kind() { |
||||
case reflect.Int64: |
||||
elem.SetInt(int64(int64(x))) |
||||
case reflect.Uint64: |
||||
elem.SetUint(uint64(x)) |
||||
case reflect.Float64: |
||||
elem.SetFloat(float64(math.Float64frombits(x))) |
||||
} |
||||
} |
||||
|
||||
func (p word64Slice) Len() int { |
||||
return p.v.Len() |
||||
} |
||||
|
||||
func (p word64Slice) Index(i int) uint64 { |
||||
elem := p.v.Index(i) |
||||
switch elem.Kind() { |
||||
case reflect.Int64: |
||||
return uint64(elem.Int()) |
||||
case reflect.Uint64: |
||||
return uint64(elem.Uint()) |
||||
case reflect.Float64: |
||||
return math.Float64bits(float64(elem.Float())) |
||||
} |
||||
panic("unreachable") |
||||
} |
||||
|
||||
func structPointer_Word64Slice(p structPointer, f field) word64Slice { |
||||
return word64Slice{structPointer_field(p, f)} |
||||
} |
||||
Loading…
Reference in new issue