From 15c0b25d011f37e7c20aeca9eaf461f78285b8d9 Mon Sep 17 00:00:00 2001
From: Alex Pilon <apilon@hashicorp.com>
Date: Fri, 22 Feb 2019 18:24:37 -0500
Subject: deps: github.com/hashicorp/terraform@sdk-v0.11-with-go-modules
 Updated via: go get github.com/hashicorp/terraform@sdk-v0.11-with-go-modules
 and go mod tidy

---
 vendor/github.com/zclconf/go-cty/cty/gob.go | 125 ++++++++++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 vendor/github.com/zclconf/go-cty/cty/gob.go

(limited to 'vendor/github.com/zclconf/go-cty/cty/gob.go')

diff --git a/vendor/github.com/zclconf/go-cty/cty/gob.go b/vendor/github.com/zclconf/go-cty/cty/gob.go
new file mode 100644
index 0000000..3d73199
--- /dev/null
+++ b/vendor/github.com/zclconf/go-cty/cty/gob.go
@@ -0,0 +1,125 @@
+package cty
+
+import (
+	"bytes"
+	"encoding/gob"
+	"fmt"
+	"math/big"
+)
+
+// GobEncode is an implementation of the gob.GobEncoder interface, which
+// allows Values to be included in structures encoded with encoding/gob.
+//
+// Currently it is not possible to represent values of capsule types in gob,
+// because the types themselves cannot be represented.
+func (val Value) GobEncode() ([]byte, error) {
+	buf := &bytes.Buffer{}
+	enc := gob.NewEncoder(buf)
+
+	gv := gobValue{
+		Version: 0,
+		Ty:      val.ty,
+		V:       val.v,
+	}
+
+	err := enc.Encode(gv)
+	if err != nil {
+		return nil, fmt.Errorf("error encoding cty.Value: %s", err)
+	}
+
+	return buf.Bytes(), nil
+}
+
+// GobDecode is an implementation of the gob.GobDecoder interface, which
+// inverts the operation performed by GobEncode. See the documentation of
+// GobEncode for considerations when using cty.Value instances with gob.
+func (val *Value) GobDecode(buf []byte) error {
+	r := bytes.NewReader(buf)
+	dec := gob.NewDecoder(r)
+
+	var gv gobValue
+	err := dec.Decode(&gv)
+	if err != nil {
+		return fmt.Errorf("error decoding cty.Value: %s", err)
+	}
+	if gv.Version != 0 {
+		return fmt.Errorf("unsupported cty.Value encoding version %d; only 0 is supported", gv.Version)
+	}
+
+	// big.Float seems to, for some reason, lose its "pointerness" when we
+	// round-trip it, so we'll fix that here.
+	if bf, ok := gv.V.(big.Float); ok {
+		gv.V = &bf
+	}
+
+	val.ty = gv.Ty
+	val.v = gv.V
+
+	return nil
+}
+
+// GobEncode is an implementation of the gob.GobEncoder interface, which
+// allows Types to be included in structures encoded with encoding/gob.
+//
+// Currently it is not possible to represent capsule types in gob.
+func (t Type) GobEncode() ([]byte, error) {
+	buf := &bytes.Buffer{}
+	enc := gob.NewEncoder(buf)
+
+	gt := gobType{
+		Version: 0,
+		Impl:    t.typeImpl,
+	}
+
+	err := enc.Encode(gt)
+	if err != nil {
+		return nil, fmt.Errorf("error encoding cty.Type: %s", err)
+	}
+
+	return buf.Bytes(), nil
+}
+
+// GobDecode is an implementatino of the gob.GobDecoder interface, which
+// reverses the encoding performed by GobEncode to allow types to be recovered
+// from gob buffers.
+func (t *Type) GobDecode(buf []byte) error {
+	r := bytes.NewReader(buf)
+	dec := gob.NewDecoder(r)
+
+	var gt gobType
+	err := dec.Decode(&gt)
+	if err != nil {
+		return fmt.Errorf("error decoding cty.Type: %s", err)
+	}
+	if gt.Version != 0 {
+		return fmt.Errorf("unsupported cty.Type encoding version %d; only 0 is supported", gt.Version)
+	}
+
+	t.typeImpl = gt.Impl
+
+	return nil
+}
+
+// Capsule types cannot currently be gob-encoded, because they rely on pointer
+// equality and we have no way to recover the original pointer on decode.
+func (t *capsuleType) GobEncode() ([]byte, error) {
+	return nil, fmt.Errorf("cannot gob-encode capsule type %q", t.FriendlyName())
+}
+
+func (t *capsuleType) GobDecode() ([]byte, error) {
+	return nil, fmt.Errorf("cannot gob-decode capsule type %q", t.FriendlyName())
+}
+
+type gobValue struct {
+	Version int
+	Ty      Type
+	V       interface{}
+}
+
+type gobType struct {
+	Version int
+	Impl    typeImpl
+}
+
+type gobCapsuleTypeImpl struct {
+}
-- 
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