[VOL-3678] First implementation of the BBSim-sadis-server
Change-Id: I5077a8f861f4cc6af9759f31a4a415042c05eba3
diff --git a/vendor/github.com/modern-go/concurrent/.gitignore b/vendor/github.com/modern-go/concurrent/.gitignore
new file mode 100644
index 0000000..3f2bc47
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/.gitignore
@@ -0,0 +1 @@
+/coverage.txt
diff --git a/vendor/github.com/modern-go/concurrent/.travis.yml b/vendor/github.com/modern-go/concurrent/.travis.yml
new file mode 100644
index 0000000..449e67c
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/.travis.yml
@@ -0,0 +1,14 @@
+language: go
+
+go:
+ - 1.8.x
+ - 1.x
+
+before_install:
+ - go get -t -v ./...
+
+script:
+ - ./test.sh
+
+after_success:
+ - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/modern-go/concurrent/LICENSE b/vendor/github.com/modern-go/concurrent/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
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+
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+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
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+ editorial revisions, annotations, elaborations, or other modifications
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+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
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+ whether in tort (including negligence), contract, or otherwise,
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+ of your accepting any such warranty or additional liability.
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+ END OF TERMS AND CONDITIONS
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+ APPENDIX: How to apply the Apache License to your work.
+
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+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
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+
+ 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.
diff --git a/vendor/github.com/modern-go/concurrent/README.md b/vendor/github.com/modern-go/concurrent/README.md
new file mode 100644
index 0000000..acab320
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/README.md
@@ -0,0 +1,49 @@
+# concurrent
+
+[](https://sourcegraph.com/github.com/modern-go/concurrent?badge)
+[](http://godoc.org/github.com/modern-go/concurrent)
+[](https://travis-ci.org/modern-go/concurrent)
+[](https://codecov.io/gh/modern-go/concurrent)
+[](https://goreportcard.com/report/github.com/modern-go/concurrent)
+[](https://raw.githubusercontent.com/modern-go/concurrent/master/LICENSE)
+
+* concurrent.Map: backport sync.Map for go below 1.9
+* concurrent.Executor: goroutine with explicit ownership and cancellable
+
+# concurrent.Map
+
+because sync.Map is only available in go 1.9, we can use concurrent.Map to make code portable
+
+```go
+m := concurrent.NewMap()
+m.Store("hello", "world")
+elem, found := m.Load("hello")
+// elem will be "world"
+// found will be true
+```
+
+# concurrent.Executor
+
+```go
+executor := concurrent.NewUnboundedExecutor()
+executor.Go(func(ctx context.Context) {
+ everyMillisecond := time.NewTicker(time.Millisecond)
+ for {
+ select {
+ case <-ctx.Done():
+ fmt.Println("goroutine exited")
+ return
+ case <-everyMillisecond.C:
+ // do something
+ }
+ }
+})
+time.Sleep(time.Second)
+executor.StopAndWaitForever()
+fmt.Println("executor stopped")
+```
+
+attach goroutine to executor instance, so that we can
+
+* cancel it by stop the executor with Stop/StopAndWait/StopAndWaitForever
+* handle panic by callback: the default behavior will no longer crash your application
\ No newline at end of file
diff --git a/vendor/github.com/modern-go/concurrent/executor.go b/vendor/github.com/modern-go/concurrent/executor.go
new file mode 100644
index 0000000..623dba1
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/executor.go
@@ -0,0 +1,14 @@
+package concurrent
+
+import "context"
+
+// Executor replace go keyword to start a new goroutine
+// the goroutine should cancel itself if the context passed in has been cancelled
+// the goroutine started by the executor, is owned by the executor
+// we can cancel all executors owned by the executor just by stop the executor itself
+// however Executor interface does not Stop method, the one starting and owning executor
+// should use the concrete type of executor, instead of this interface.
+type Executor interface {
+ // Go starts a new goroutine controlled by the context
+ Go(handler func(ctx context.Context))
+}
diff --git a/vendor/github.com/modern-go/concurrent/go_above_19.go b/vendor/github.com/modern-go/concurrent/go_above_19.go
new file mode 100644
index 0000000..aeabf8c
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/go_above_19.go
@@ -0,0 +1,15 @@
+//+build go1.9
+
+package concurrent
+
+import "sync"
+
+// Map is a wrapper for sync.Map introduced in go1.9
+type Map struct {
+ sync.Map
+}
+
+// NewMap creates a thread safe Map
+func NewMap() *Map {
+ return &Map{}
+}
diff --git a/vendor/github.com/modern-go/concurrent/go_below_19.go b/vendor/github.com/modern-go/concurrent/go_below_19.go
new file mode 100644
index 0000000..b9c8df7
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/go_below_19.go
@@ -0,0 +1,33 @@
+//+build !go1.9
+
+package concurrent
+
+import "sync"
+
+// Map implements a thread safe map for go version below 1.9 using mutex
+type Map struct {
+ lock sync.RWMutex
+ data map[interface{}]interface{}
+}
+
+// NewMap creates a thread safe map
+func NewMap() *Map {
+ return &Map{
+ data: make(map[interface{}]interface{}, 32),
+ }
+}
+
+// Load is same as sync.Map Load
+func (m *Map) Load(key interface{}) (elem interface{}, found bool) {
+ m.lock.RLock()
+ elem, found = m.data[key]
+ m.lock.RUnlock()
+ return
+}
+
+// Load is same as sync.Map Store
+func (m *Map) Store(key interface{}, elem interface{}) {
+ m.lock.Lock()
+ m.data[key] = elem
+ m.lock.Unlock()
+}
diff --git a/vendor/github.com/modern-go/concurrent/log.go b/vendor/github.com/modern-go/concurrent/log.go
new file mode 100644
index 0000000..9756fcc
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/log.go
@@ -0,0 +1,13 @@
+package concurrent
+
+import (
+ "os"
+ "log"
+ "io/ioutil"
+)
+
+// ErrorLogger is used to print out error, can be set to writer other than stderr
+var ErrorLogger = log.New(os.Stderr, "", 0)
+
+// InfoLogger is used to print informational message, default to off
+var InfoLogger = log.New(ioutil.Discard, "", 0)
\ No newline at end of file
diff --git a/vendor/github.com/modern-go/concurrent/test.sh b/vendor/github.com/modern-go/concurrent/test.sh
new file mode 100644
index 0000000..d1e6b2e
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/test.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -e
+echo "" > coverage.txt
+
+for d in $(go list ./... | grep -v vendor); do
+ go test -coverprofile=profile.out -coverpkg=github.com/modern-go/concurrent $d
+ if [ -f profile.out ]; then
+ cat profile.out >> coverage.txt
+ rm profile.out
+ fi
+done
diff --git a/vendor/github.com/modern-go/concurrent/unbounded_executor.go b/vendor/github.com/modern-go/concurrent/unbounded_executor.go
new file mode 100644
index 0000000..05a77dc
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/unbounded_executor.go
@@ -0,0 +1,119 @@
+package concurrent
+
+import (
+ "context"
+ "fmt"
+ "runtime"
+ "runtime/debug"
+ "sync"
+ "time"
+ "reflect"
+)
+
+// HandlePanic logs goroutine panic by default
+var HandlePanic = func(recovered interface{}, funcName string) {
+ ErrorLogger.Println(fmt.Sprintf("%s panic: %v", funcName, recovered))
+ ErrorLogger.Println(string(debug.Stack()))
+}
+
+// UnboundedExecutor is a executor without limits on counts of alive goroutines
+// it tracks the goroutine started by it, and can cancel them when shutdown
+type UnboundedExecutor struct {
+ ctx context.Context
+ cancel context.CancelFunc
+ activeGoroutinesMutex *sync.Mutex
+ activeGoroutines map[string]int
+ HandlePanic func(recovered interface{}, funcName string)
+}
+
+// GlobalUnboundedExecutor has the life cycle of the program itself
+// any goroutine want to be shutdown before main exit can be started from this executor
+// GlobalUnboundedExecutor expects the main function to call stop
+// it does not magically knows the main function exits
+var GlobalUnboundedExecutor = NewUnboundedExecutor()
+
+// NewUnboundedExecutor creates a new UnboundedExecutor,
+// UnboundedExecutor can not be created by &UnboundedExecutor{}
+// HandlePanic can be set with a callback to override global HandlePanic
+func NewUnboundedExecutor() *UnboundedExecutor {
+ ctx, cancel := context.WithCancel(context.TODO())
+ return &UnboundedExecutor{
+ ctx: ctx,
+ cancel: cancel,
+ activeGoroutinesMutex: &sync.Mutex{},
+ activeGoroutines: map[string]int{},
+ }
+}
+
+// Go starts a new goroutine and tracks its lifecycle.
+// Panic will be recovered and logged automatically, except for StopSignal
+func (executor *UnboundedExecutor) Go(handler func(ctx context.Context)) {
+ pc := reflect.ValueOf(handler).Pointer()
+ f := runtime.FuncForPC(pc)
+ funcName := f.Name()
+ file, line := f.FileLine(pc)
+ executor.activeGoroutinesMutex.Lock()
+ defer executor.activeGoroutinesMutex.Unlock()
+ startFrom := fmt.Sprintf("%s:%d", file, line)
+ executor.activeGoroutines[startFrom] += 1
+ go func() {
+ defer func() {
+ recovered := recover()
+ // if you want to quit a goroutine without trigger HandlePanic
+ // use runtime.Goexit() to quit
+ if recovered != nil {
+ if executor.HandlePanic == nil {
+ HandlePanic(recovered, funcName)
+ } else {
+ executor.HandlePanic(recovered, funcName)
+ }
+ }
+ executor.activeGoroutinesMutex.Lock()
+ executor.activeGoroutines[startFrom] -= 1
+ executor.activeGoroutinesMutex.Unlock()
+ }()
+ handler(executor.ctx)
+ }()
+}
+
+// Stop cancel all goroutines started by this executor without wait
+func (executor *UnboundedExecutor) Stop() {
+ executor.cancel()
+}
+
+// StopAndWaitForever cancel all goroutines started by this executor and
+// wait until all goroutines exited
+func (executor *UnboundedExecutor) StopAndWaitForever() {
+ executor.StopAndWait(context.Background())
+}
+
+// StopAndWait cancel all goroutines started by this executor and wait.
+// Wait can be cancelled by the context passed in.
+func (executor *UnboundedExecutor) StopAndWait(ctx context.Context) {
+ executor.cancel()
+ for {
+ oneHundredMilliseconds := time.NewTimer(time.Millisecond * 100)
+ select {
+ case <-oneHundredMilliseconds.C:
+ if executor.checkNoActiveGoroutines() {
+ return
+ }
+ case <-ctx.Done():
+ return
+ }
+ }
+}
+
+func (executor *UnboundedExecutor) checkNoActiveGoroutines() bool {
+ executor.activeGoroutinesMutex.Lock()
+ defer executor.activeGoroutinesMutex.Unlock()
+ for startFrom, count := range executor.activeGoroutines {
+ if count > 0 {
+ InfoLogger.Println("UnboundedExecutor is still waiting goroutines to quit",
+ "startFrom", startFrom,
+ "count", count)
+ return false
+ }
+ }
+ return true
+}
diff --git a/vendor/github.com/modern-go/reflect2/.gitignore b/vendor/github.com/modern-go/reflect2/.gitignore
new file mode 100644
index 0000000..7b26c94
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/.gitignore
@@ -0,0 +1,2 @@
+/vendor
+/coverage.txt
diff --git a/vendor/github.com/modern-go/reflect2/.travis.yml b/vendor/github.com/modern-go/reflect2/.travis.yml
new file mode 100644
index 0000000..fbb4374
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/.travis.yml
@@ -0,0 +1,15 @@
+language: go
+
+go:
+ - 1.8.x
+ - 1.x
+
+before_install:
+ - go get -t -v ./...
+ - go get -t -v github.com/modern-go/reflect2-tests/...
+
+script:
+ - ./test.sh
+
+after_success:
+ - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/modern-go/reflect2/Gopkg.lock b/vendor/github.com/modern-go/reflect2/Gopkg.lock
new file mode 100644
index 0000000..2a3a698
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/Gopkg.lock
@@ -0,0 +1,15 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+ name = "github.com/modern-go/concurrent"
+ packages = ["."]
+ revision = "e0a39a4cb4216ea8db28e22a69f4ec25610d513a"
+ version = "1.0.0"
+
+[solve-meta]
+ analyzer-name = "dep"
+ analyzer-version = 1
+ inputs-digest = "daee8a88b3498b61c5640056665b8b9eea062006f5e596bbb6a3ed9119a11ec7"
+ solver-name = "gps-cdcl"
+ solver-version = 1
diff --git a/vendor/github.com/modern-go/reflect2/Gopkg.toml b/vendor/github.com/modern-go/reflect2/Gopkg.toml
new file mode 100644
index 0000000..2f4f4db
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/Gopkg.toml
@@ -0,0 +1,35 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+# name = "github.com/user/project"
+# version = "1.0.0"
+#
+# [[constraint]]
+# name = "github.com/user/project2"
+# branch = "dev"
+# source = "github.com/myfork/project2"
+#
+# [[override]]
+# name = "github.com/x/y"
+# version = "2.4.0"
+#
+# [prune]
+# non-go = false
+# go-tests = true
+# unused-packages = true
+
+ignored = []
+
+[[constraint]]
+ name = "github.com/modern-go/concurrent"
+ version = "1.0.0"
+
+[prune]
+ go-tests = true
+ unused-packages = true
diff --git a/vendor/github.com/modern-go/reflect2/LICENSE b/vendor/github.com/modern-go/reflect2/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
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+ to the Licensor or its representatives, including but not limited to
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+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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+
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+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
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+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
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+ of the following places: within a NOTICE text file distributed
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+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright [yyyy] [name of copyright owner]
+
+ 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.
diff --git a/vendor/github.com/modern-go/reflect2/README.md b/vendor/github.com/modern-go/reflect2/README.md
new file mode 100644
index 0000000..6f968aa
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/README.md
@@ -0,0 +1,71 @@
+# reflect2
+
+[](https://sourcegraph.com/github.com/modern-go/reflect2?badge)
+[](http://godoc.org/github.com/modern-go/reflect2)
+[](https://travis-ci.org/modern-go/reflect2)
+[](https://codecov.io/gh/modern-go/reflect2)
+[](https://goreportcard.com/report/github.com/modern-go/reflect2)
+[](https://raw.githubusercontent.com/modern-go/reflect2/master/LICENSE)
+
+reflect api that avoids runtime reflect.Value cost
+
+* reflect get/set interface{}, with type checking
+* reflect get/set unsafe.Pointer, without type checking
+* `reflect2.TypeByName` works like `Class.forName` found in java
+
+[json-iterator](https://github.com/json-iterator/go) use this package to save runtime dispatching cost.
+This package is designed for low level libraries to optimize reflection performance.
+General application should still use reflect standard library.
+
+# reflect2.TypeByName
+
+```go
+// given package is github.com/your/awesome-package
+type MyStruct struct {
+ // ...
+}
+
+// will return the type
+reflect2.TypeByName("awesome-package.MyStruct")
+// however, if the type has not been used
+// it will be eliminated by compiler, so we can not get it in runtime
+```
+
+# reflect2 get/set interface{}
+
+```go
+valType := reflect2.TypeOf(1)
+i := 1
+j := 10
+valType.Set(&i, &j)
+// i will be 10
+```
+
+to get set `type`, always use its pointer `*type`
+
+# reflect2 get/set unsafe.Pointer
+
+```go
+valType := reflect2.TypeOf(1)
+i := 1
+j := 10
+valType.UnsafeSet(unsafe.Pointer(&i), unsafe.Pointer(&j))
+// i will be 10
+```
+
+to get set `type`, always use its pointer `*type`
+
+# benchmark
+
+Benchmark is not necessary for this package. It does nothing actually.
+As it is just a thin wrapper to make go runtime public.
+Both `reflect2` and `reflect` call same function
+provided by `runtime` package exposed by go language.
+
+# unsafe safety
+
+Instead of casting `[]byte` to `sliceHeader` in your application using unsafe.
+We can use reflect2 instead. This way, if `sliceHeader` changes in the future,
+only reflect2 need to be upgraded.
+
+reflect2 tries its best to keep the implementation same as reflect (by testing).
\ No newline at end of file
diff --git a/vendor/github.com/modern-go/reflect2/go_above_17.go b/vendor/github.com/modern-go/reflect2/go_above_17.go
new file mode 100644
index 0000000..5c1cea8
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/go_above_17.go
@@ -0,0 +1,8 @@
+//+build go1.7
+
+package reflect2
+
+import "unsafe"
+
+//go:linkname resolveTypeOff reflect.resolveTypeOff
+func resolveTypeOff(rtype unsafe.Pointer, off int32) unsafe.Pointer
diff --git a/vendor/github.com/modern-go/reflect2/go_above_19.go b/vendor/github.com/modern-go/reflect2/go_above_19.go
new file mode 100644
index 0000000..c7e3b78
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/go_above_19.go
@@ -0,0 +1,14 @@
+//+build go1.9
+
+package reflect2
+
+import (
+ "unsafe"
+)
+
+//go:linkname makemap reflect.makemap
+func makemap(rtype unsafe.Pointer, cap int) (m unsafe.Pointer)
+
+func makeMapWithSize(rtype unsafe.Pointer, cap int) unsafe.Pointer {
+ return makemap(rtype, cap)
+}
diff --git a/vendor/github.com/modern-go/reflect2/go_below_17.go b/vendor/github.com/modern-go/reflect2/go_below_17.go
new file mode 100644
index 0000000..65a93c8
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/go_below_17.go
@@ -0,0 +1,9 @@
+//+build !go1.7
+
+package reflect2
+
+import "unsafe"
+
+func resolveTypeOff(rtype unsafe.Pointer, off int32) unsafe.Pointer {
+ return nil
+}
diff --git a/vendor/github.com/modern-go/reflect2/go_below_19.go b/vendor/github.com/modern-go/reflect2/go_below_19.go
new file mode 100644
index 0000000..b050ef7
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/go_below_19.go
@@ -0,0 +1,14 @@
+//+build !go1.9
+
+package reflect2
+
+import (
+ "unsafe"
+)
+
+//go:linkname makemap reflect.makemap
+func makemap(rtype unsafe.Pointer) (m unsafe.Pointer)
+
+func makeMapWithSize(rtype unsafe.Pointer, cap int) unsafe.Pointer {
+ return makemap(rtype)
+}
diff --git a/vendor/github.com/modern-go/reflect2/reflect2.go b/vendor/github.com/modern-go/reflect2/reflect2.go
new file mode 100644
index 0000000..63b49c7
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/reflect2.go
@@ -0,0 +1,298 @@
+package reflect2
+
+import (
+ "github.com/modern-go/concurrent"
+ "reflect"
+ "unsafe"
+)
+
+type Type interface {
+ Kind() reflect.Kind
+ // New return pointer to data of this type
+ New() interface{}
+ // UnsafeNew return the allocated space pointed by unsafe.Pointer
+ UnsafeNew() unsafe.Pointer
+ // PackEFace cast a unsafe pointer to object represented pointer
+ PackEFace(ptr unsafe.Pointer) interface{}
+ // Indirect dereference object represented pointer to this type
+ Indirect(obj interface{}) interface{}
+ // UnsafeIndirect dereference pointer to this type
+ UnsafeIndirect(ptr unsafe.Pointer) interface{}
+ // Type1 returns reflect.Type
+ Type1() reflect.Type
+ Implements(thatType Type) bool
+ String() string
+ RType() uintptr
+ // interface{} of this type has pointer like behavior
+ LikePtr() bool
+ IsNullable() bool
+ IsNil(obj interface{}) bool
+ UnsafeIsNil(ptr unsafe.Pointer) bool
+ Set(obj interface{}, val interface{})
+ UnsafeSet(ptr unsafe.Pointer, val unsafe.Pointer)
+ AssignableTo(anotherType Type) bool
+}
+
+type ListType interface {
+ Type
+ Elem() Type
+ SetIndex(obj interface{}, index int, elem interface{})
+ UnsafeSetIndex(obj unsafe.Pointer, index int, elem unsafe.Pointer)
+ GetIndex(obj interface{}, index int) interface{}
+ UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer
+}
+
+type ArrayType interface {
+ ListType
+ Len() int
+}
+
+type SliceType interface {
+ ListType
+ MakeSlice(length int, cap int) interface{}
+ UnsafeMakeSlice(length int, cap int) unsafe.Pointer
+ Grow(obj interface{}, newLength int)
+ UnsafeGrow(ptr unsafe.Pointer, newLength int)
+ Append(obj interface{}, elem interface{})
+ UnsafeAppend(obj unsafe.Pointer, elem unsafe.Pointer)
+ LengthOf(obj interface{}) int
+ UnsafeLengthOf(ptr unsafe.Pointer) int
+ SetNil(obj interface{})
+ UnsafeSetNil(ptr unsafe.Pointer)
+ Cap(obj interface{}) int
+ UnsafeCap(ptr unsafe.Pointer) int
+}
+
+type StructType interface {
+ Type
+ NumField() int
+ Field(i int) StructField
+ FieldByName(name string) StructField
+ FieldByIndex(index []int) StructField
+ FieldByNameFunc(match func(string) bool) StructField
+}
+
+type StructField interface {
+ Offset() uintptr
+ Name() string
+ PkgPath() string
+ Type() Type
+ Tag() reflect.StructTag
+ Index() []int
+ Anonymous() bool
+ Set(obj interface{}, value interface{})
+ UnsafeSet(obj unsafe.Pointer, value unsafe.Pointer)
+ Get(obj interface{}) interface{}
+ UnsafeGet(obj unsafe.Pointer) unsafe.Pointer
+}
+
+type MapType interface {
+ Type
+ Key() Type
+ Elem() Type
+ MakeMap(cap int) interface{}
+ UnsafeMakeMap(cap int) unsafe.Pointer
+ SetIndex(obj interface{}, key interface{}, elem interface{})
+ UnsafeSetIndex(obj unsafe.Pointer, key unsafe.Pointer, elem unsafe.Pointer)
+ TryGetIndex(obj interface{}, key interface{}) (interface{}, bool)
+ GetIndex(obj interface{}, key interface{}) interface{}
+ UnsafeGetIndex(obj unsafe.Pointer, key unsafe.Pointer) unsafe.Pointer
+ Iterate(obj interface{}) MapIterator
+ UnsafeIterate(obj unsafe.Pointer) MapIterator
+}
+
+type MapIterator interface {
+ HasNext() bool
+ Next() (key interface{}, elem interface{})
+ UnsafeNext() (key unsafe.Pointer, elem unsafe.Pointer)
+}
+
+type PtrType interface {
+ Type
+ Elem() Type
+}
+
+type InterfaceType interface {
+ NumMethod() int
+}
+
+type Config struct {
+ UseSafeImplementation bool
+}
+
+type API interface {
+ TypeOf(obj interface{}) Type
+ Type2(type1 reflect.Type) Type
+}
+
+var ConfigUnsafe = Config{UseSafeImplementation: false}.Froze()
+var ConfigSafe = Config{UseSafeImplementation: true}.Froze()
+
+type frozenConfig struct {
+ useSafeImplementation bool
+ cache *concurrent.Map
+}
+
+func (cfg Config) Froze() *frozenConfig {
+ return &frozenConfig{
+ useSafeImplementation: cfg.UseSafeImplementation,
+ cache: concurrent.NewMap(),
+ }
+}
+
+func (cfg *frozenConfig) TypeOf(obj interface{}) Type {
+ cacheKey := uintptr(unpackEFace(obj).rtype)
+ typeObj, found := cfg.cache.Load(cacheKey)
+ if found {
+ return typeObj.(Type)
+ }
+ return cfg.Type2(reflect.TypeOf(obj))
+}
+
+func (cfg *frozenConfig) Type2(type1 reflect.Type) Type {
+ if type1 == nil {
+ return nil
+ }
+ cacheKey := uintptr(unpackEFace(type1).data)
+ typeObj, found := cfg.cache.Load(cacheKey)
+ if found {
+ return typeObj.(Type)
+ }
+ type2 := cfg.wrapType(type1)
+ cfg.cache.Store(cacheKey, type2)
+ return type2
+}
+
+func (cfg *frozenConfig) wrapType(type1 reflect.Type) Type {
+ safeType := safeType{Type: type1, cfg: cfg}
+ switch type1.Kind() {
+ case reflect.Struct:
+ if cfg.useSafeImplementation {
+ return &safeStructType{safeType}
+ }
+ return newUnsafeStructType(cfg, type1)
+ case reflect.Array:
+ if cfg.useSafeImplementation {
+ return &safeSliceType{safeType}
+ }
+ return newUnsafeArrayType(cfg, type1)
+ case reflect.Slice:
+ if cfg.useSafeImplementation {
+ return &safeSliceType{safeType}
+ }
+ return newUnsafeSliceType(cfg, type1)
+ case reflect.Map:
+ if cfg.useSafeImplementation {
+ return &safeMapType{safeType}
+ }
+ return newUnsafeMapType(cfg, type1)
+ case reflect.Ptr, reflect.Chan, reflect.Func:
+ if cfg.useSafeImplementation {
+ return &safeMapType{safeType}
+ }
+ return newUnsafePtrType(cfg, type1)
+ case reflect.Interface:
+ if cfg.useSafeImplementation {
+ return &safeMapType{safeType}
+ }
+ if type1.NumMethod() == 0 {
+ return newUnsafeEFaceType(cfg, type1)
+ }
+ return newUnsafeIFaceType(cfg, type1)
+ default:
+ if cfg.useSafeImplementation {
+ return &safeType
+ }
+ return newUnsafeType(cfg, type1)
+ }
+}
+
+func TypeOf(obj interface{}) Type {
+ return ConfigUnsafe.TypeOf(obj)
+}
+
+func TypeOfPtr(obj interface{}) PtrType {
+ return TypeOf(obj).(PtrType)
+}
+
+func Type2(type1 reflect.Type) Type {
+ if type1 == nil {
+ return nil
+ }
+ return ConfigUnsafe.Type2(type1)
+}
+
+func PtrTo(typ Type) Type {
+ return Type2(reflect.PtrTo(typ.Type1()))
+}
+
+func PtrOf(obj interface{}) unsafe.Pointer {
+ return unpackEFace(obj).data
+}
+
+func RTypeOf(obj interface{}) uintptr {
+ return uintptr(unpackEFace(obj).rtype)
+}
+
+func IsNil(obj interface{}) bool {
+ if obj == nil {
+ return true
+ }
+ return unpackEFace(obj).data == nil
+}
+
+func IsNullable(kind reflect.Kind) bool {
+ switch kind {
+ case reflect.Ptr, reflect.Map, reflect.Chan, reflect.Func, reflect.Slice, reflect.Interface:
+ return true
+ }
+ return false
+}
+
+func likePtrKind(kind reflect.Kind) bool {
+ switch kind {
+ case reflect.Ptr, reflect.Map, reflect.Chan, reflect.Func:
+ return true
+ }
+ return false
+}
+
+func likePtrType(typ reflect.Type) bool {
+ if likePtrKind(typ.Kind()) {
+ return true
+ }
+ if typ.Kind() == reflect.Struct {
+ if typ.NumField() != 1 {
+ return false
+ }
+ return likePtrType(typ.Field(0).Type)
+ }
+ if typ.Kind() == reflect.Array {
+ if typ.Len() != 1 {
+ return false
+ }
+ return likePtrType(typ.Elem())
+ }
+ return false
+}
+
+// NoEscape hides a pointer from escape analysis. noescape is
+// the identity function but escape analysis doesn't think the
+// output depends on the input. noescape is inlined and currently
+// compiles down to zero instructions.
+// USE CAREFULLY!
+//go:nosplit
+func NoEscape(p unsafe.Pointer) unsafe.Pointer {
+ x := uintptr(p)
+ return unsafe.Pointer(x ^ 0)
+}
+
+func UnsafeCastString(str string) []byte {
+ stringHeader := (*reflect.StringHeader)(unsafe.Pointer(&str))
+ sliceHeader := &reflect.SliceHeader{
+ Data: stringHeader.Data,
+ Cap: stringHeader.Len,
+ Len: stringHeader.Len,
+ }
+ return *(*[]byte)(unsafe.Pointer(sliceHeader))
+}
diff --git a/vendor/github.com/modern-go/reflect2/reflect2_amd64.s b/vendor/github.com/modern-go/reflect2/reflect2_amd64.s
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/reflect2_amd64.s
diff --git a/vendor/github.com/modern-go/reflect2/reflect2_kind.go b/vendor/github.com/modern-go/reflect2/reflect2_kind.go
new file mode 100644
index 0000000..62f299e
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/reflect2_kind.go
@@ -0,0 +1,30 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+// DefaultTypeOfKind return the non aliased default type for the kind
+func DefaultTypeOfKind(kind reflect.Kind) Type {
+ return kindTypes[kind]
+}
+
+var kindTypes = map[reflect.Kind]Type{
+ reflect.Bool: TypeOf(true),
+ reflect.Uint8: TypeOf(uint8(0)),
+ reflect.Int8: TypeOf(int8(0)),
+ reflect.Uint16: TypeOf(uint16(0)),
+ reflect.Int16: TypeOf(int16(0)),
+ reflect.Uint32: TypeOf(uint32(0)),
+ reflect.Int32: TypeOf(int32(0)),
+ reflect.Uint64: TypeOf(uint64(0)),
+ reflect.Int64: TypeOf(int64(0)),
+ reflect.Uint: TypeOf(uint(0)),
+ reflect.Int: TypeOf(int(0)),
+ reflect.Float32: TypeOf(float32(0)),
+ reflect.Float64: TypeOf(float64(0)),
+ reflect.Uintptr: TypeOf(uintptr(0)),
+ reflect.String: TypeOf(""),
+ reflect.UnsafePointer: TypeOf(unsafe.Pointer(nil)),
+}
diff --git a/vendor/github.com/modern-go/reflect2/relfect2_386.s b/vendor/github.com/modern-go/reflect2/relfect2_386.s
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/relfect2_386.s
diff --git a/vendor/github.com/modern-go/reflect2/relfect2_amd64p32.s b/vendor/github.com/modern-go/reflect2/relfect2_amd64p32.s
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/relfect2_amd64p32.s
diff --git a/vendor/github.com/modern-go/reflect2/relfect2_arm.s b/vendor/github.com/modern-go/reflect2/relfect2_arm.s
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/relfect2_arm.s
diff --git a/vendor/github.com/modern-go/reflect2/relfect2_arm64.s b/vendor/github.com/modern-go/reflect2/relfect2_arm64.s
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/relfect2_arm64.s
diff --git a/vendor/github.com/modern-go/reflect2/relfect2_mips64x.s b/vendor/github.com/modern-go/reflect2/relfect2_mips64x.s
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/relfect2_mips64x.s
diff --git a/vendor/github.com/modern-go/reflect2/relfect2_mipsx.s b/vendor/github.com/modern-go/reflect2/relfect2_mipsx.s
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/relfect2_mipsx.s
diff --git a/vendor/github.com/modern-go/reflect2/relfect2_ppc64x.s b/vendor/github.com/modern-go/reflect2/relfect2_ppc64x.s
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/relfect2_ppc64x.s
diff --git a/vendor/github.com/modern-go/reflect2/relfect2_s390x.s b/vendor/github.com/modern-go/reflect2/relfect2_s390x.s
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/relfect2_s390x.s
diff --git a/vendor/github.com/modern-go/reflect2/safe_field.go b/vendor/github.com/modern-go/reflect2/safe_field.go
new file mode 100644
index 0000000..d4ba1f4
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/safe_field.go
@@ -0,0 +1,58 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type safeField struct {
+ reflect.StructField
+}
+
+func (field *safeField) Offset() uintptr {
+ return field.StructField.Offset
+}
+
+func (field *safeField) Name() string {
+ return field.StructField.Name
+}
+
+func (field *safeField) PkgPath() string {
+ return field.StructField.PkgPath
+}
+
+func (field *safeField) Type() Type {
+ panic("not implemented")
+}
+
+func (field *safeField) Tag() reflect.StructTag {
+ return field.StructField.Tag
+}
+
+func (field *safeField) Index() []int {
+ return field.StructField.Index
+}
+
+func (field *safeField) Anonymous() bool {
+ return field.StructField.Anonymous
+}
+
+func (field *safeField) Set(obj interface{}, value interface{}) {
+ val := reflect.ValueOf(obj).Elem()
+ val.FieldByIndex(field.Index()).Set(reflect.ValueOf(value).Elem())
+}
+
+func (field *safeField) UnsafeSet(obj unsafe.Pointer, value unsafe.Pointer) {
+ panic("unsafe operation is not supported")
+}
+
+func (field *safeField) Get(obj interface{}) interface{} {
+ val := reflect.ValueOf(obj).Elem().FieldByIndex(field.Index())
+ ptr := reflect.New(val.Type())
+ ptr.Elem().Set(val)
+ return ptr.Interface()
+}
+
+func (field *safeField) UnsafeGet(obj unsafe.Pointer) unsafe.Pointer {
+ panic("does not support unsafe operation")
+}
diff --git a/vendor/github.com/modern-go/reflect2/safe_map.go b/vendor/github.com/modern-go/reflect2/safe_map.go
new file mode 100644
index 0000000..8836220
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/safe_map.go
@@ -0,0 +1,101 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type safeMapType struct {
+ safeType
+}
+
+func (type2 *safeMapType) Key() Type {
+ return type2.safeType.cfg.Type2(type2.Type.Key())
+}
+
+func (type2 *safeMapType) MakeMap(cap int) interface{} {
+ ptr := reflect.New(type2.Type)
+ ptr.Elem().Set(reflect.MakeMap(type2.Type))
+ return ptr.Interface()
+}
+
+func (type2 *safeMapType) UnsafeMakeMap(cap int) unsafe.Pointer {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeMapType) SetIndex(obj interface{}, key interface{}, elem interface{}) {
+ keyVal := reflect.ValueOf(key)
+ elemVal := reflect.ValueOf(elem)
+ val := reflect.ValueOf(obj)
+ val.Elem().SetMapIndex(keyVal.Elem(), elemVal.Elem())
+}
+
+func (type2 *safeMapType) UnsafeSetIndex(obj unsafe.Pointer, key unsafe.Pointer, elem unsafe.Pointer) {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeMapType) TryGetIndex(obj interface{}, key interface{}) (interface{}, bool) {
+ keyVal := reflect.ValueOf(key)
+ if key == nil {
+ keyVal = reflect.New(type2.Type.Key()).Elem()
+ }
+ val := reflect.ValueOf(obj).MapIndex(keyVal)
+ if !val.IsValid() {
+ return nil, false
+ }
+ return val.Interface(), true
+}
+
+func (type2 *safeMapType) GetIndex(obj interface{}, key interface{}) interface{} {
+ val := reflect.ValueOf(obj).Elem()
+ keyVal := reflect.ValueOf(key).Elem()
+ elemVal := val.MapIndex(keyVal)
+ if !elemVal.IsValid() {
+ ptr := reflect.New(reflect.PtrTo(val.Type().Elem()))
+ return ptr.Elem().Interface()
+ }
+ ptr := reflect.New(elemVal.Type())
+ ptr.Elem().Set(elemVal)
+ return ptr.Interface()
+}
+
+func (type2 *safeMapType) UnsafeGetIndex(obj unsafe.Pointer, key unsafe.Pointer) unsafe.Pointer {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeMapType) Iterate(obj interface{}) MapIterator {
+ m := reflect.ValueOf(obj).Elem()
+ return &safeMapIterator{
+ m: m,
+ keys: m.MapKeys(),
+ }
+}
+
+func (type2 *safeMapType) UnsafeIterate(obj unsafe.Pointer) MapIterator {
+ panic("does not support unsafe operation")
+}
+
+type safeMapIterator struct {
+ i int
+ m reflect.Value
+ keys []reflect.Value
+}
+
+func (iter *safeMapIterator) HasNext() bool {
+ return iter.i != len(iter.keys)
+}
+
+func (iter *safeMapIterator) Next() (interface{}, interface{}) {
+ key := iter.keys[iter.i]
+ elem := iter.m.MapIndex(key)
+ iter.i += 1
+ keyPtr := reflect.New(key.Type())
+ keyPtr.Elem().Set(key)
+ elemPtr := reflect.New(elem.Type())
+ elemPtr.Elem().Set(elem)
+ return keyPtr.Interface(), elemPtr.Interface()
+}
+
+func (iter *safeMapIterator) UnsafeNext() (unsafe.Pointer, unsafe.Pointer) {
+ panic("does not support unsafe operation")
+}
diff --git a/vendor/github.com/modern-go/reflect2/safe_slice.go b/vendor/github.com/modern-go/reflect2/safe_slice.go
new file mode 100644
index 0000000..bcce6fd
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/safe_slice.go
@@ -0,0 +1,92 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type safeSliceType struct {
+ safeType
+}
+
+func (type2 *safeSliceType) SetIndex(obj interface{}, index int, value interface{}) {
+ val := reflect.ValueOf(obj).Elem()
+ elem := reflect.ValueOf(value).Elem()
+ val.Index(index).Set(elem)
+}
+
+func (type2 *safeSliceType) UnsafeSetIndex(obj unsafe.Pointer, index int, value unsafe.Pointer) {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeSliceType) GetIndex(obj interface{}, index int) interface{} {
+ val := reflect.ValueOf(obj).Elem()
+ elem := val.Index(index)
+ ptr := reflect.New(elem.Type())
+ ptr.Elem().Set(elem)
+ return ptr.Interface()
+}
+
+func (type2 *safeSliceType) UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeSliceType) MakeSlice(length int, cap int) interface{} {
+ val := reflect.MakeSlice(type2.Type, length, cap)
+ ptr := reflect.New(val.Type())
+ ptr.Elem().Set(val)
+ return ptr.Interface()
+}
+
+func (type2 *safeSliceType) UnsafeMakeSlice(length int, cap int) unsafe.Pointer {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeSliceType) Grow(obj interface{}, newLength int) {
+ oldCap := type2.Cap(obj)
+ oldSlice := reflect.ValueOf(obj).Elem()
+ delta := newLength - oldCap
+ deltaVals := make([]reflect.Value, delta)
+ newSlice := reflect.Append(oldSlice, deltaVals...)
+ oldSlice.Set(newSlice)
+}
+
+func (type2 *safeSliceType) UnsafeGrow(ptr unsafe.Pointer, newLength int) {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeSliceType) Append(obj interface{}, elem interface{}) {
+ val := reflect.ValueOf(obj).Elem()
+ elemVal := reflect.ValueOf(elem).Elem()
+ newVal := reflect.Append(val, elemVal)
+ val.Set(newVal)
+}
+
+func (type2 *safeSliceType) UnsafeAppend(obj unsafe.Pointer, elem unsafe.Pointer) {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeSliceType) SetNil(obj interface{}) {
+ val := reflect.ValueOf(obj).Elem()
+ val.Set(reflect.Zero(val.Type()))
+}
+
+func (type2 *safeSliceType) UnsafeSetNil(ptr unsafe.Pointer) {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeSliceType) LengthOf(obj interface{}) int {
+ return reflect.ValueOf(obj).Elem().Len()
+}
+
+func (type2 *safeSliceType) UnsafeLengthOf(ptr unsafe.Pointer) int {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeSliceType) Cap(obj interface{}) int {
+ return reflect.ValueOf(obj).Elem().Cap()
+}
+
+func (type2 *safeSliceType) UnsafeCap(ptr unsafe.Pointer) int {
+ panic("does not support unsafe operation")
+}
diff --git a/vendor/github.com/modern-go/reflect2/safe_struct.go b/vendor/github.com/modern-go/reflect2/safe_struct.go
new file mode 100644
index 0000000..e5fb9b3
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/safe_struct.go
@@ -0,0 +1,29 @@
+package reflect2
+
+type safeStructType struct {
+ safeType
+}
+
+func (type2 *safeStructType) FieldByName(name string) StructField {
+ field, found := type2.Type.FieldByName(name)
+ if !found {
+ panic("field " + name + " not found")
+ }
+ return &safeField{StructField: field}
+}
+
+func (type2 *safeStructType) Field(i int) StructField {
+ return &safeField{StructField: type2.Type.Field(i)}
+}
+
+func (type2 *safeStructType) FieldByIndex(index []int) StructField {
+ return &safeField{StructField: type2.Type.FieldByIndex(index)}
+}
+
+func (type2 *safeStructType) FieldByNameFunc(match func(string) bool) StructField {
+ field, found := type2.Type.FieldByNameFunc(match)
+ if !found {
+ panic("field match condition not found in " + type2.Type.String())
+ }
+ return &safeField{StructField: field}
+}
diff --git a/vendor/github.com/modern-go/reflect2/safe_type.go b/vendor/github.com/modern-go/reflect2/safe_type.go
new file mode 100644
index 0000000..ee4e7bb
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/safe_type.go
@@ -0,0 +1,78 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type safeType struct {
+ reflect.Type
+ cfg *frozenConfig
+}
+
+func (type2 *safeType) New() interface{} {
+ return reflect.New(type2.Type).Interface()
+}
+
+func (type2 *safeType) UnsafeNew() unsafe.Pointer {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeType) Elem() Type {
+ return type2.cfg.Type2(type2.Type.Elem())
+}
+
+func (type2 *safeType) Type1() reflect.Type {
+ return type2.Type
+}
+
+func (type2 *safeType) PackEFace(ptr unsafe.Pointer) interface{} {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeType) Implements(thatType Type) bool {
+ return type2.Type.Implements(thatType.Type1())
+}
+
+func (type2 *safeType) RType() uintptr {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeType) Indirect(obj interface{}) interface{} {
+ return reflect.Indirect(reflect.ValueOf(obj)).Interface()
+}
+
+func (type2 *safeType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeType) LikePtr() bool {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeType) IsNullable() bool {
+ return IsNullable(type2.Kind())
+}
+
+func (type2 *safeType) IsNil(obj interface{}) bool {
+ if obj == nil {
+ return true
+ }
+ return reflect.ValueOf(obj).Elem().IsNil()
+}
+
+func (type2 *safeType) UnsafeIsNil(ptr unsafe.Pointer) bool {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeType) Set(obj interface{}, val interface{}) {
+ reflect.ValueOf(obj).Elem().Set(reflect.ValueOf(val).Elem())
+}
+
+func (type2 *safeType) UnsafeSet(ptr unsafe.Pointer, val unsafe.Pointer) {
+ panic("does not support unsafe operation")
+}
+
+func (type2 *safeType) AssignableTo(anotherType Type) bool {
+ return type2.Type1().AssignableTo(anotherType.Type1())
+}
diff --git a/vendor/github.com/modern-go/reflect2/test.sh b/vendor/github.com/modern-go/reflect2/test.sh
new file mode 100644
index 0000000..3d2b976
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/test.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -e
+echo "" > coverage.txt
+
+for d in $(go list github.com/modern-go/reflect2-tests/... | grep -v vendor); do
+ go test -coverprofile=profile.out -coverpkg=github.com/modern-go/reflect2 $d
+ if [ -f profile.out ]; then
+ cat profile.out >> coverage.txt
+ rm profile.out
+ fi
+done
diff --git a/vendor/github.com/modern-go/reflect2/type_map.go b/vendor/github.com/modern-go/reflect2/type_map.go
new file mode 100644
index 0000000..3acfb55
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/type_map.go
@@ -0,0 +1,113 @@
+package reflect2
+
+import (
+ "reflect"
+ "runtime"
+ "strings"
+ "sync"
+ "unsafe"
+)
+
+// typelinks1 for 1.5 ~ 1.6
+//go:linkname typelinks1 reflect.typelinks
+func typelinks1() [][]unsafe.Pointer
+
+// typelinks2 for 1.7 ~
+//go:linkname typelinks2 reflect.typelinks
+func typelinks2() (sections []unsafe.Pointer, offset [][]int32)
+
+// initOnce guards initialization of types and packages
+var initOnce sync.Once
+
+var types map[string]reflect.Type
+var packages map[string]map[string]reflect.Type
+
+// discoverTypes initializes types and packages
+func discoverTypes() {
+ types = make(map[string]reflect.Type)
+ packages = make(map[string]map[string]reflect.Type)
+
+ ver := runtime.Version()
+ if ver == "go1.5" || strings.HasPrefix(ver, "go1.5.") {
+ loadGo15Types()
+ } else if ver == "go1.6" || strings.HasPrefix(ver, "go1.6.") {
+ loadGo15Types()
+ } else {
+ loadGo17Types()
+ }
+}
+
+func loadGo15Types() {
+ var obj interface{} = reflect.TypeOf(0)
+ typePtrss := typelinks1()
+ for _, typePtrs := range typePtrss {
+ for _, typePtr := range typePtrs {
+ (*emptyInterface)(unsafe.Pointer(&obj)).word = typePtr
+ typ := obj.(reflect.Type)
+ if typ.Kind() == reflect.Ptr && typ.Elem().Kind() == reflect.Struct {
+ loadedType := typ.Elem()
+ pkgTypes := packages[loadedType.PkgPath()]
+ if pkgTypes == nil {
+ pkgTypes = map[string]reflect.Type{}
+ packages[loadedType.PkgPath()] = pkgTypes
+ }
+ types[loadedType.String()] = loadedType
+ pkgTypes[loadedType.Name()] = loadedType
+ }
+ if typ.Kind() == reflect.Slice && typ.Elem().Kind() == reflect.Ptr &&
+ typ.Elem().Elem().Kind() == reflect.Struct {
+ loadedType := typ.Elem().Elem()
+ pkgTypes := packages[loadedType.PkgPath()]
+ if pkgTypes == nil {
+ pkgTypes = map[string]reflect.Type{}
+ packages[loadedType.PkgPath()] = pkgTypes
+ }
+ types[loadedType.String()] = loadedType
+ pkgTypes[loadedType.Name()] = loadedType
+ }
+ }
+ }
+}
+
+func loadGo17Types() {
+ var obj interface{} = reflect.TypeOf(0)
+ sections, offset := typelinks2()
+ for i, offs := range offset {
+ rodata := sections[i]
+ for _, off := range offs {
+ (*emptyInterface)(unsafe.Pointer(&obj)).word = resolveTypeOff(unsafe.Pointer(rodata), off)
+ typ := obj.(reflect.Type)
+ if typ.Kind() == reflect.Ptr && typ.Elem().Kind() == reflect.Struct {
+ loadedType := typ.Elem()
+ pkgTypes := packages[loadedType.PkgPath()]
+ if pkgTypes == nil {
+ pkgTypes = map[string]reflect.Type{}
+ packages[loadedType.PkgPath()] = pkgTypes
+ }
+ types[loadedType.String()] = loadedType
+ pkgTypes[loadedType.Name()] = loadedType
+ }
+ }
+ }
+}
+
+type emptyInterface struct {
+ typ unsafe.Pointer
+ word unsafe.Pointer
+}
+
+// TypeByName return the type by its name, just like Class.forName in java
+func TypeByName(typeName string) Type {
+ initOnce.Do(discoverTypes)
+ return Type2(types[typeName])
+}
+
+// TypeByPackageName return the type by its package and name
+func TypeByPackageName(pkgPath string, name string) Type {
+ initOnce.Do(discoverTypes)
+ pkgTypes := packages[pkgPath]
+ if pkgTypes == nil {
+ return nil
+ }
+ return Type2(pkgTypes[name])
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_array.go b/vendor/github.com/modern-go/reflect2/unsafe_array.go
new file mode 100644
index 0000000..76cbdba
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_array.go
@@ -0,0 +1,65 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type UnsafeArrayType struct {
+ unsafeType
+ elemRType unsafe.Pointer
+ pElemRType unsafe.Pointer
+ elemSize uintptr
+ likePtr bool
+}
+
+func newUnsafeArrayType(cfg *frozenConfig, type1 reflect.Type) *UnsafeArrayType {
+ return &UnsafeArrayType{
+ unsafeType: *newUnsafeType(cfg, type1),
+ elemRType: unpackEFace(type1.Elem()).data,
+ pElemRType: unpackEFace(reflect.PtrTo(type1.Elem())).data,
+ elemSize: type1.Elem().Size(),
+ likePtr: likePtrType(type1),
+ }
+}
+
+func (type2 *UnsafeArrayType) LikePtr() bool {
+ return type2.likePtr
+}
+
+func (type2 *UnsafeArrayType) Indirect(obj interface{}) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIndirect(objEFace.data)
+}
+
+func (type2 *UnsafeArrayType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
+ if type2.likePtr {
+ return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr))
+ }
+ return packEFace(type2.rtype, ptr)
+}
+
+func (type2 *UnsafeArrayType) SetIndex(obj interface{}, index int, elem interface{}) {
+ objEFace := unpackEFace(obj)
+ assertType("ArrayType.SetIndex argument 1", type2.ptrRType, objEFace.rtype)
+ elemEFace := unpackEFace(elem)
+ assertType("ArrayType.SetIndex argument 3", type2.pElemRType, elemEFace.rtype)
+ type2.UnsafeSetIndex(objEFace.data, index, elemEFace.data)
+}
+
+func (type2 *UnsafeArrayType) UnsafeSetIndex(obj unsafe.Pointer, index int, elem unsafe.Pointer) {
+ elemPtr := arrayAt(obj, index, type2.elemSize, "i < s.Len")
+ typedmemmove(type2.elemRType, elemPtr, elem)
+}
+
+func (type2 *UnsafeArrayType) GetIndex(obj interface{}, index int) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("ArrayType.GetIndex argument 1", type2.ptrRType, objEFace.rtype)
+ elemPtr := type2.UnsafeGetIndex(objEFace.data, index)
+ return packEFace(type2.pElemRType, elemPtr)
+}
+
+func (type2 *UnsafeArrayType) UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer {
+ return arrayAt(obj, index, type2.elemSize, "i < s.Len")
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_eface.go b/vendor/github.com/modern-go/reflect2/unsafe_eface.go
new file mode 100644
index 0000000..805010f
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_eface.go
@@ -0,0 +1,59 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type eface struct {
+ rtype unsafe.Pointer
+ data unsafe.Pointer
+}
+
+func unpackEFace(obj interface{}) *eface {
+ return (*eface)(unsafe.Pointer(&obj))
+}
+
+func packEFace(rtype unsafe.Pointer, data unsafe.Pointer) interface{} {
+ var i interface{}
+ e := (*eface)(unsafe.Pointer(&i))
+ e.rtype = rtype
+ e.data = data
+ return i
+}
+
+type UnsafeEFaceType struct {
+ unsafeType
+}
+
+func newUnsafeEFaceType(cfg *frozenConfig, type1 reflect.Type) *UnsafeEFaceType {
+ return &UnsafeEFaceType{
+ unsafeType: *newUnsafeType(cfg, type1),
+ }
+}
+
+func (type2 *UnsafeEFaceType) IsNil(obj interface{}) bool {
+ if obj == nil {
+ return true
+ }
+ objEFace := unpackEFace(obj)
+ assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIsNil(objEFace.data)
+}
+
+func (type2 *UnsafeEFaceType) UnsafeIsNil(ptr unsafe.Pointer) bool {
+ if ptr == nil {
+ return true
+ }
+ return unpackEFace(*(*interface{})(ptr)).data == nil
+}
+
+func (type2 *UnsafeEFaceType) Indirect(obj interface{}) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIndirect(objEFace.data)
+}
+
+func (type2 *UnsafeEFaceType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
+ return *(*interface{})(ptr)
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_field.go b/vendor/github.com/modern-go/reflect2/unsafe_field.go
new file mode 100644
index 0000000..5eb5313
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_field.go
@@ -0,0 +1,74 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type UnsafeStructField struct {
+ reflect.StructField
+ structType *UnsafeStructType
+ rtype unsafe.Pointer
+ ptrRType unsafe.Pointer
+}
+
+func newUnsafeStructField(structType *UnsafeStructType, structField reflect.StructField) *UnsafeStructField {
+ return &UnsafeStructField{
+ StructField: structField,
+ rtype: unpackEFace(structField.Type).data,
+ ptrRType: unpackEFace(reflect.PtrTo(structField.Type)).data,
+ structType: structType,
+ }
+}
+
+func (field *UnsafeStructField) Offset() uintptr {
+ return field.StructField.Offset
+}
+
+func (field *UnsafeStructField) Name() string {
+ return field.StructField.Name
+}
+
+func (field *UnsafeStructField) PkgPath() string {
+ return field.StructField.PkgPath
+}
+
+func (field *UnsafeStructField) Type() Type {
+ return field.structType.cfg.Type2(field.StructField.Type)
+}
+
+func (field *UnsafeStructField) Tag() reflect.StructTag {
+ return field.StructField.Tag
+}
+
+func (field *UnsafeStructField) Index() []int {
+ return field.StructField.Index
+}
+
+func (field *UnsafeStructField) Anonymous() bool {
+ return field.StructField.Anonymous
+}
+
+func (field *UnsafeStructField) Set(obj interface{}, value interface{}) {
+ objEFace := unpackEFace(obj)
+ assertType("StructField.SetIndex argument 1", field.structType.ptrRType, objEFace.rtype)
+ valueEFace := unpackEFace(value)
+ assertType("StructField.SetIndex argument 2", field.ptrRType, valueEFace.rtype)
+ field.UnsafeSet(objEFace.data, valueEFace.data)
+}
+
+func (field *UnsafeStructField) UnsafeSet(obj unsafe.Pointer, value unsafe.Pointer) {
+ fieldPtr := add(obj, field.StructField.Offset, "same as non-reflect &v.field")
+ typedmemmove(field.rtype, fieldPtr, value)
+}
+
+func (field *UnsafeStructField) Get(obj interface{}) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("StructField.GetIndex argument 1", field.structType.ptrRType, objEFace.rtype)
+ value := field.UnsafeGet(objEFace.data)
+ return packEFace(field.ptrRType, value)
+}
+
+func (field *UnsafeStructField) UnsafeGet(obj unsafe.Pointer) unsafe.Pointer {
+ return add(obj, field.StructField.Offset, "same as non-reflect &v.field")
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_iface.go b/vendor/github.com/modern-go/reflect2/unsafe_iface.go
new file mode 100644
index 0000000..b601955
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_iface.go
@@ -0,0 +1,64 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type iface struct {
+ itab *itab
+ data unsafe.Pointer
+}
+
+type itab struct {
+ ignore unsafe.Pointer
+ rtype unsafe.Pointer
+}
+
+func IFaceToEFace(ptr unsafe.Pointer) interface{} {
+ iface := (*iface)(ptr)
+ if iface.itab == nil {
+ return nil
+ }
+ return packEFace(iface.itab.rtype, iface.data)
+}
+
+type UnsafeIFaceType struct {
+ unsafeType
+}
+
+func newUnsafeIFaceType(cfg *frozenConfig, type1 reflect.Type) *UnsafeIFaceType {
+ return &UnsafeIFaceType{
+ unsafeType: *newUnsafeType(cfg, type1),
+ }
+}
+
+func (type2 *UnsafeIFaceType) Indirect(obj interface{}) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIndirect(objEFace.data)
+}
+
+func (type2 *UnsafeIFaceType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
+ return IFaceToEFace(ptr)
+}
+
+func (type2 *UnsafeIFaceType) IsNil(obj interface{}) bool {
+ if obj == nil {
+ return true
+ }
+ objEFace := unpackEFace(obj)
+ assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIsNil(objEFace.data)
+}
+
+func (type2 *UnsafeIFaceType) UnsafeIsNil(ptr unsafe.Pointer) bool {
+ if ptr == nil {
+ return true
+ }
+ iface := (*iface)(ptr)
+ if iface.itab == nil {
+ return true
+ }
+ return false
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_link.go b/vendor/github.com/modern-go/reflect2/unsafe_link.go
new file mode 100644
index 0000000..57229c8
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_link.go
@@ -0,0 +1,70 @@
+package reflect2
+
+import "unsafe"
+
+//go:linkname unsafe_New reflect.unsafe_New
+func unsafe_New(rtype unsafe.Pointer) unsafe.Pointer
+
+//go:linkname typedmemmove reflect.typedmemmove
+func typedmemmove(rtype unsafe.Pointer, dst, src unsafe.Pointer)
+
+//go:linkname unsafe_NewArray reflect.unsafe_NewArray
+func unsafe_NewArray(rtype unsafe.Pointer, length int) unsafe.Pointer
+
+// typedslicecopy copies a slice of elemType values from src to dst,
+// returning the number of elements copied.
+//go:linkname typedslicecopy reflect.typedslicecopy
+//go:noescape
+func typedslicecopy(elemType unsafe.Pointer, dst, src sliceHeader) int
+
+//go:linkname mapassign reflect.mapassign
+//go:noescape
+func mapassign(rtype unsafe.Pointer, m unsafe.Pointer, key, val unsafe.Pointer)
+
+//go:linkname mapaccess reflect.mapaccess
+//go:noescape
+func mapaccess(rtype unsafe.Pointer, m unsafe.Pointer, key unsafe.Pointer) (val unsafe.Pointer)
+
+// m escapes into the return value, but the caller of mapiterinit
+// doesn't let the return value escape.
+//go:noescape
+//go:linkname mapiterinit reflect.mapiterinit
+func mapiterinit(rtype unsafe.Pointer, m unsafe.Pointer) *hiter
+
+//go:noescape
+//go:linkname mapiternext reflect.mapiternext
+func mapiternext(it *hiter)
+
+//go:linkname ifaceE2I reflect.ifaceE2I
+func ifaceE2I(rtype unsafe.Pointer, src interface{}, dst unsafe.Pointer)
+
+// A hash iteration structure.
+// If you modify hiter, also change cmd/internal/gc/reflect.go to indicate
+// the layout of this structure.
+type hiter struct {
+ key unsafe.Pointer // Must be in first position. Write nil to indicate iteration end (see cmd/internal/gc/range.go).
+ value unsafe.Pointer // Must be in second position (see cmd/internal/gc/range.go).
+ // rest fields are ignored
+}
+
+// add returns p+x.
+//
+// The whySafe string is ignored, so that the function still inlines
+// as efficiently as p+x, but all call sites should use the string to
+// record why the addition is safe, which is to say why the addition
+// does not cause x to advance to the very end of p's allocation
+// and therefore point incorrectly at the next block in memory.
+func add(p unsafe.Pointer, x uintptr, whySafe string) unsafe.Pointer {
+ return unsafe.Pointer(uintptr(p) + x)
+}
+
+// arrayAt returns the i-th element of p,
+// an array whose elements are eltSize bytes wide.
+// The array pointed at by p must have at least i+1 elements:
+// it is invalid (but impossible to check here) to pass i >= len,
+// because then the result will point outside the array.
+// whySafe must explain why i < len. (Passing "i < len" is fine;
+// the benefit is to surface this assumption at the call site.)
+func arrayAt(p unsafe.Pointer, i int, eltSize uintptr, whySafe string) unsafe.Pointer {
+ return add(p, uintptr(i)*eltSize, "i < len")
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_map.go b/vendor/github.com/modern-go/reflect2/unsafe_map.go
new file mode 100644
index 0000000..f2e76e6
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_map.go
@@ -0,0 +1,138 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type UnsafeMapType struct {
+ unsafeType
+ pKeyRType unsafe.Pointer
+ pElemRType unsafe.Pointer
+}
+
+func newUnsafeMapType(cfg *frozenConfig, type1 reflect.Type) MapType {
+ return &UnsafeMapType{
+ unsafeType: *newUnsafeType(cfg, type1),
+ pKeyRType: unpackEFace(reflect.PtrTo(type1.Key())).data,
+ pElemRType: unpackEFace(reflect.PtrTo(type1.Elem())).data,
+ }
+}
+
+func (type2 *UnsafeMapType) IsNil(obj interface{}) bool {
+ if obj == nil {
+ return true
+ }
+ objEFace := unpackEFace(obj)
+ assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIsNil(objEFace.data)
+}
+
+func (type2 *UnsafeMapType) UnsafeIsNil(ptr unsafe.Pointer) bool {
+ if ptr == nil {
+ return true
+ }
+ return *(*unsafe.Pointer)(ptr) == nil
+}
+
+func (type2 *UnsafeMapType) LikePtr() bool {
+ return true
+}
+
+func (type2 *UnsafeMapType) Indirect(obj interface{}) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("MapType.Indirect argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIndirect(objEFace.data)
+}
+
+func (type2 *UnsafeMapType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
+ return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr))
+}
+
+func (type2 *UnsafeMapType) Key() Type {
+ return type2.cfg.Type2(type2.Type.Key())
+}
+
+func (type2 *UnsafeMapType) MakeMap(cap int) interface{} {
+ return packEFace(type2.ptrRType, type2.UnsafeMakeMap(cap))
+}
+
+func (type2 *UnsafeMapType) UnsafeMakeMap(cap int) unsafe.Pointer {
+ m := makeMapWithSize(type2.rtype, cap)
+ return unsafe.Pointer(&m)
+}
+
+func (type2 *UnsafeMapType) SetIndex(obj interface{}, key interface{}, elem interface{}) {
+ objEFace := unpackEFace(obj)
+ assertType("MapType.SetIndex argument 1", type2.ptrRType, objEFace.rtype)
+ keyEFace := unpackEFace(key)
+ assertType("MapType.SetIndex argument 2", type2.pKeyRType, keyEFace.rtype)
+ elemEFace := unpackEFace(elem)
+ assertType("MapType.SetIndex argument 3", type2.pElemRType, elemEFace.rtype)
+ type2.UnsafeSetIndex(objEFace.data, keyEFace.data, elemEFace.data)
+}
+
+func (type2 *UnsafeMapType) UnsafeSetIndex(obj unsafe.Pointer, key unsafe.Pointer, elem unsafe.Pointer) {
+ mapassign(type2.rtype, *(*unsafe.Pointer)(obj), key, elem)
+}
+
+func (type2 *UnsafeMapType) TryGetIndex(obj interface{}, key interface{}) (interface{}, bool) {
+ objEFace := unpackEFace(obj)
+ assertType("MapType.TryGetIndex argument 1", type2.ptrRType, objEFace.rtype)
+ keyEFace := unpackEFace(key)
+ assertType("MapType.TryGetIndex argument 2", type2.pKeyRType, keyEFace.rtype)
+ elemPtr := type2.UnsafeGetIndex(objEFace.data, keyEFace.data)
+ if elemPtr == nil {
+ return nil, false
+ }
+ return packEFace(type2.pElemRType, elemPtr), true
+}
+
+func (type2 *UnsafeMapType) GetIndex(obj interface{}, key interface{}) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("MapType.GetIndex argument 1", type2.ptrRType, objEFace.rtype)
+ keyEFace := unpackEFace(key)
+ assertType("MapType.GetIndex argument 2", type2.pKeyRType, keyEFace.rtype)
+ elemPtr := type2.UnsafeGetIndex(objEFace.data, keyEFace.data)
+ return packEFace(type2.pElemRType, elemPtr)
+}
+
+func (type2 *UnsafeMapType) UnsafeGetIndex(obj unsafe.Pointer, key unsafe.Pointer) unsafe.Pointer {
+ return mapaccess(type2.rtype, *(*unsafe.Pointer)(obj), key)
+}
+
+func (type2 *UnsafeMapType) Iterate(obj interface{}) MapIterator {
+ objEFace := unpackEFace(obj)
+ assertType("MapType.Iterate argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIterate(objEFace.data)
+}
+
+func (type2 *UnsafeMapType) UnsafeIterate(obj unsafe.Pointer) MapIterator {
+ return &UnsafeMapIterator{
+ hiter: mapiterinit(type2.rtype, *(*unsafe.Pointer)(obj)),
+ pKeyRType: type2.pKeyRType,
+ pElemRType: type2.pElemRType,
+ }
+}
+
+type UnsafeMapIterator struct {
+ *hiter
+ pKeyRType unsafe.Pointer
+ pElemRType unsafe.Pointer
+}
+
+func (iter *UnsafeMapIterator) HasNext() bool {
+ return iter.key != nil
+}
+
+func (iter *UnsafeMapIterator) Next() (interface{}, interface{}) {
+ key, elem := iter.UnsafeNext()
+ return packEFace(iter.pKeyRType, key), packEFace(iter.pElemRType, elem)
+}
+
+func (iter *UnsafeMapIterator) UnsafeNext() (unsafe.Pointer, unsafe.Pointer) {
+ key := iter.key
+ elem := iter.value
+ mapiternext(iter.hiter)
+ return key, elem
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_ptr.go b/vendor/github.com/modern-go/reflect2/unsafe_ptr.go
new file mode 100644
index 0000000..8e5ec9c
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_ptr.go
@@ -0,0 +1,46 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type UnsafePtrType struct {
+ unsafeType
+}
+
+func newUnsafePtrType(cfg *frozenConfig, type1 reflect.Type) *UnsafePtrType {
+ return &UnsafePtrType{
+ unsafeType: *newUnsafeType(cfg, type1),
+ }
+}
+
+func (type2 *UnsafePtrType) IsNil(obj interface{}) bool {
+ if obj == nil {
+ return true
+ }
+ objEFace := unpackEFace(obj)
+ assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIsNil(objEFace.data)
+}
+
+func (type2 *UnsafePtrType) UnsafeIsNil(ptr unsafe.Pointer) bool {
+ if ptr == nil {
+ return true
+ }
+ return *(*unsafe.Pointer)(ptr) == nil
+}
+
+func (type2 *UnsafePtrType) LikePtr() bool {
+ return true
+}
+
+func (type2 *UnsafePtrType) Indirect(obj interface{}) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIndirect(objEFace.data)
+}
+
+func (type2 *UnsafePtrType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
+ return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr))
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_slice.go b/vendor/github.com/modern-go/reflect2/unsafe_slice.go
new file mode 100644
index 0000000..1c6d876
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_slice.go
@@ -0,0 +1,177 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+// sliceHeader is a safe version of SliceHeader used within this package.
+type sliceHeader struct {
+ Data unsafe.Pointer
+ Len int
+ Cap int
+}
+
+type UnsafeSliceType struct {
+ unsafeType
+ elemRType unsafe.Pointer
+ pElemRType unsafe.Pointer
+ elemSize uintptr
+}
+
+func newUnsafeSliceType(cfg *frozenConfig, type1 reflect.Type) SliceType {
+ elemType := type1.Elem()
+ return &UnsafeSliceType{
+ unsafeType: *newUnsafeType(cfg, type1),
+ pElemRType: unpackEFace(reflect.PtrTo(elemType)).data,
+ elemRType: unpackEFace(elemType).data,
+ elemSize: elemType.Size(),
+ }
+}
+
+func (type2 *UnsafeSliceType) Set(obj interface{}, val interface{}) {
+ objEFace := unpackEFace(obj)
+ assertType("Type.Set argument 1", type2.ptrRType, objEFace.rtype)
+ valEFace := unpackEFace(val)
+ assertType("Type.Set argument 2", type2.ptrRType, valEFace.rtype)
+ type2.UnsafeSet(objEFace.data, valEFace.data)
+}
+
+func (type2 *UnsafeSliceType) UnsafeSet(ptr unsafe.Pointer, val unsafe.Pointer) {
+ *(*sliceHeader)(ptr) = *(*sliceHeader)(val)
+}
+
+func (type2 *UnsafeSliceType) IsNil(obj interface{}) bool {
+ if obj == nil {
+ return true
+ }
+ objEFace := unpackEFace(obj)
+ assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIsNil(objEFace.data)
+}
+
+func (type2 *UnsafeSliceType) UnsafeIsNil(ptr unsafe.Pointer) bool {
+ if ptr == nil {
+ return true
+ }
+ return (*sliceHeader)(ptr).Data == nil
+}
+
+func (type2 *UnsafeSliceType) SetNil(obj interface{}) {
+ objEFace := unpackEFace(obj)
+ assertType("SliceType.SetNil argument 1", type2.ptrRType, objEFace.rtype)
+ type2.UnsafeSetNil(objEFace.data)
+}
+
+func (type2 *UnsafeSliceType) UnsafeSetNil(ptr unsafe.Pointer) {
+ header := (*sliceHeader)(ptr)
+ header.Len = 0
+ header.Cap = 0
+ header.Data = nil
+}
+
+func (type2 *UnsafeSliceType) MakeSlice(length int, cap int) interface{} {
+ return packEFace(type2.ptrRType, type2.UnsafeMakeSlice(length, cap))
+}
+
+func (type2 *UnsafeSliceType) UnsafeMakeSlice(length int, cap int) unsafe.Pointer {
+ header := &sliceHeader{unsafe_NewArray(type2.elemRType, cap), length, cap}
+ return unsafe.Pointer(header)
+}
+
+func (type2 *UnsafeSliceType) LengthOf(obj interface{}) int {
+ objEFace := unpackEFace(obj)
+ assertType("SliceType.Len argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeLengthOf(objEFace.data)
+}
+
+func (type2 *UnsafeSliceType) UnsafeLengthOf(obj unsafe.Pointer) int {
+ header := (*sliceHeader)(obj)
+ return header.Len
+}
+
+func (type2 *UnsafeSliceType) SetIndex(obj interface{}, index int, elem interface{}) {
+ objEFace := unpackEFace(obj)
+ assertType("SliceType.SetIndex argument 1", type2.ptrRType, objEFace.rtype)
+ elemEFace := unpackEFace(elem)
+ assertType("SliceType.SetIndex argument 3", type2.pElemRType, elemEFace.rtype)
+ type2.UnsafeSetIndex(objEFace.data, index, elemEFace.data)
+}
+
+func (type2 *UnsafeSliceType) UnsafeSetIndex(obj unsafe.Pointer, index int, elem unsafe.Pointer) {
+ header := (*sliceHeader)(obj)
+ elemPtr := arrayAt(header.Data, index, type2.elemSize, "i < s.Len")
+ typedmemmove(type2.elemRType, elemPtr, elem)
+}
+
+func (type2 *UnsafeSliceType) GetIndex(obj interface{}, index int) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("SliceType.GetIndex argument 1", type2.ptrRType, objEFace.rtype)
+ elemPtr := type2.UnsafeGetIndex(objEFace.data, index)
+ return packEFace(type2.pElemRType, elemPtr)
+}
+
+func (type2 *UnsafeSliceType) UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer {
+ header := (*sliceHeader)(obj)
+ return arrayAt(header.Data, index, type2.elemSize, "i < s.Len")
+}
+
+func (type2 *UnsafeSliceType) Append(obj interface{}, elem interface{}) {
+ objEFace := unpackEFace(obj)
+ assertType("SliceType.Append argument 1", type2.ptrRType, objEFace.rtype)
+ elemEFace := unpackEFace(elem)
+ assertType("SliceType.Append argument 2", type2.pElemRType, elemEFace.rtype)
+ type2.UnsafeAppend(objEFace.data, elemEFace.data)
+}
+
+func (type2 *UnsafeSliceType) UnsafeAppend(obj unsafe.Pointer, elem unsafe.Pointer) {
+ header := (*sliceHeader)(obj)
+ oldLen := header.Len
+ type2.UnsafeGrow(obj, oldLen+1)
+ type2.UnsafeSetIndex(obj, oldLen, elem)
+}
+
+func (type2 *UnsafeSliceType) Cap(obj interface{}) int {
+ objEFace := unpackEFace(obj)
+ assertType("SliceType.Cap argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeCap(objEFace.data)
+}
+
+func (type2 *UnsafeSliceType) UnsafeCap(ptr unsafe.Pointer) int {
+ return (*sliceHeader)(ptr).Cap
+}
+
+func (type2 *UnsafeSliceType) Grow(obj interface{}, newLength int) {
+ objEFace := unpackEFace(obj)
+ assertType("SliceType.Grow argument 1", type2.ptrRType, objEFace.rtype)
+ type2.UnsafeGrow(objEFace.data, newLength)
+}
+
+func (type2 *UnsafeSliceType) UnsafeGrow(obj unsafe.Pointer, newLength int) {
+ header := (*sliceHeader)(obj)
+ if newLength <= header.Cap {
+ header.Len = newLength
+ return
+ }
+ newCap := calcNewCap(header.Cap, newLength)
+ newHeader := (*sliceHeader)(type2.UnsafeMakeSlice(header.Len, newCap))
+ typedslicecopy(type2.elemRType, *newHeader, *header)
+ header.Data = newHeader.Data
+ header.Cap = newHeader.Cap
+ header.Len = newLength
+}
+
+func calcNewCap(cap int, expectedCap int) int {
+ if cap == 0 {
+ cap = expectedCap
+ } else {
+ for cap < expectedCap {
+ if cap < 1024 {
+ cap += cap
+ } else {
+ cap += cap / 4
+ }
+ }
+ }
+ return cap
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_struct.go b/vendor/github.com/modern-go/reflect2/unsafe_struct.go
new file mode 100644
index 0000000..804d916
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_struct.go
@@ -0,0 +1,59 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type UnsafeStructType struct {
+ unsafeType
+ likePtr bool
+}
+
+func newUnsafeStructType(cfg *frozenConfig, type1 reflect.Type) *UnsafeStructType {
+ return &UnsafeStructType{
+ unsafeType: *newUnsafeType(cfg, type1),
+ likePtr: likePtrType(type1),
+ }
+}
+
+func (type2 *UnsafeStructType) LikePtr() bool {
+ return type2.likePtr
+}
+
+func (type2 *UnsafeStructType) Indirect(obj interface{}) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIndirect(objEFace.data)
+}
+
+func (type2 *UnsafeStructType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
+ if type2.likePtr {
+ return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr))
+ }
+ return packEFace(type2.rtype, ptr)
+}
+
+func (type2 *UnsafeStructType) FieldByName(name string) StructField {
+ structField, found := type2.Type.FieldByName(name)
+ if !found {
+ return nil
+ }
+ return newUnsafeStructField(type2, structField)
+}
+
+func (type2 *UnsafeStructType) Field(i int) StructField {
+ return newUnsafeStructField(type2, type2.Type.Field(i))
+}
+
+func (type2 *UnsafeStructType) FieldByIndex(index []int) StructField {
+ return newUnsafeStructField(type2, type2.Type.FieldByIndex(index))
+}
+
+func (type2 *UnsafeStructType) FieldByNameFunc(match func(string) bool) StructField {
+ structField, found := type2.Type.FieldByNameFunc(match)
+ if !found {
+ panic("field match condition not found in " + type2.Type.String())
+ }
+ return newUnsafeStructField(type2, structField)
+}
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_type.go b/vendor/github.com/modern-go/reflect2/unsafe_type.go
new file mode 100644
index 0000000..1394171
--- /dev/null
+++ b/vendor/github.com/modern-go/reflect2/unsafe_type.go
@@ -0,0 +1,85 @@
+package reflect2
+
+import (
+ "reflect"
+ "unsafe"
+)
+
+type unsafeType struct {
+ safeType
+ rtype unsafe.Pointer
+ ptrRType unsafe.Pointer
+}
+
+func newUnsafeType(cfg *frozenConfig, type1 reflect.Type) *unsafeType {
+ return &unsafeType{
+ safeType: safeType{
+ Type: type1,
+ cfg: cfg,
+ },
+ rtype: unpackEFace(type1).data,
+ ptrRType: unpackEFace(reflect.PtrTo(type1)).data,
+ }
+}
+
+func (type2 *unsafeType) Set(obj interface{}, val interface{}) {
+ objEFace := unpackEFace(obj)
+ assertType("Type.Set argument 1", type2.ptrRType, objEFace.rtype)
+ valEFace := unpackEFace(val)
+ assertType("Type.Set argument 2", type2.ptrRType, valEFace.rtype)
+ type2.UnsafeSet(objEFace.data, valEFace.data)
+}
+
+func (type2 *unsafeType) UnsafeSet(ptr unsafe.Pointer, val unsafe.Pointer) {
+ typedmemmove(type2.rtype, ptr, val)
+}
+
+func (type2 *unsafeType) IsNil(obj interface{}) bool {
+ objEFace := unpackEFace(obj)
+ assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIsNil(objEFace.data)
+}
+
+func (type2 *unsafeType) UnsafeIsNil(ptr unsafe.Pointer) bool {
+ return ptr == nil
+}
+
+func (type2 *unsafeType) UnsafeNew() unsafe.Pointer {
+ return unsafe_New(type2.rtype)
+}
+
+func (type2 *unsafeType) New() interface{} {
+ return packEFace(type2.ptrRType, type2.UnsafeNew())
+}
+
+func (type2 *unsafeType) PackEFace(ptr unsafe.Pointer) interface{} {
+ return packEFace(type2.ptrRType, ptr)
+}
+
+func (type2 *unsafeType) RType() uintptr {
+ return uintptr(type2.rtype)
+}
+
+func (type2 *unsafeType) Indirect(obj interface{}) interface{} {
+ objEFace := unpackEFace(obj)
+ assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
+ return type2.UnsafeIndirect(objEFace.data)
+}
+
+func (type2 *unsafeType) UnsafeIndirect(obj unsafe.Pointer) interface{} {
+ return packEFace(type2.rtype, obj)
+}
+
+func (type2 *unsafeType) LikePtr() bool {
+ return false
+}
+
+func assertType(where string, expectRType unsafe.Pointer, actualRType unsafe.Pointer) {
+ if expectRType != actualRType {
+ expectType := reflect.TypeOf(0)
+ (*iface)(unsafe.Pointer(&expectType)).data = expectRType
+ actualType := reflect.TypeOf(0)
+ (*iface)(unsafe.Pointer(&actualType)).data = actualRType
+ panic(where + ": expect " + expectType.String() + ", actual " + actualType.String())
+ }
+}