diff --git a/vendor/github.com/Masterminds/semver/v3/CHANGELOG.md b/vendor/github.com/Masterminds/semver/v3/CHANGELOG.md
index 947210d..1f90c38 100644
--- a/vendor/github.com/Masterminds/semver/v3/CHANGELOG.md
+++ b/vendor/github.com/Masterminds/semver/v3/CHANGELOG.md
@@ -1,5 +1,11 @@
# Changelog
+## 3.1.1 (2020-11-23)
+
+### Fixed
+
+- #158: Fixed issue with generated regex operation order that could cause problem
+
## 3.1.0 (2020-04-15)
### Added
diff --git a/vendor/github.com/Masterminds/semver/v3/constraints.go b/vendor/github.com/Masterminds/semver/v3/constraints.go
index 7420823..547613f 100644
--- a/vendor/github.com/Masterminds/semver/v3/constraints.go
+++ b/vendor/github.com/Masterminds/semver/v3/constraints.go
@@ -164,14 +164,11 @@ func init() {
"^": constraintCaret,
}
- ops := make([]string, 0, len(constraintOps))
- for k := range constraintOps {
- ops = append(ops, regexp.QuoteMeta(k))
- }
+ ops := `=||!=|>|<|>=|=>|<=|=<|~|~>|\^`
constraintRegex = regexp.MustCompile(fmt.Sprintf(
`^\s*(%s)\s*(%s)\s*$`,
- strings.Join(ops, "|"),
+ ops,
cvRegex))
constraintRangeRegex = regexp.MustCompile(fmt.Sprintf(
@@ -180,12 +177,12 @@ func init() {
findConstraintRegex = regexp.MustCompile(fmt.Sprintf(
`(%s)\s*(%s)`,
- strings.Join(ops, "|"),
+ ops,
cvRegex))
validConstraintRegex = regexp.MustCompile(fmt.Sprintf(
`^(\s*(%s)\s*(%s)\s*\,?)+$`,
- strings.Join(ops, "|"),
+ ops,
cvRegex))
}
diff --git a/vendor/github.com/Masterminds/sprig/v3/CHANGELOG.md b/vendor/github.com/Masterminds/sprig/v3/CHANGELOG.md
index 83b8e03..61d8ebf 100644
--- a/vendor/github.com/Masterminds/sprig/v3/CHANGELOG.md
+++ b/vendor/github.com/Masterminds/sprig/v3/CHANGELOG.md
@@ -1,5 +1,35 @@
# Changelog
+## Release 3.2.0 (2020-12-14)
+
+### Added
+
+- #211: Added randInt function (thanks @kochurovro)
+- #223: Added fromJson and mustFromJson functions (thanks @mholt)
+- #242: Added a bcrypt function (thanks @robbiet480)
+- #253: Added randBytes function (thanks @MikaelSmith)
+- #254: Added dig function for dicts (thanks @nyarly)
+- #257: Added regexQuoteMeta for quoting regex metadata (thanks @rheaton)
+- #261: Added filepath functions osBase, osDir, osExt, osClean, osIsAbs (thanks @zugl)
+- #268: Added and and all functions for testing conditions (thanks @phuslu)
+- #181: Added float64 arithmetic addf, add1f, subf, divf, mulf, maxf, and minf
+ (thanks @andrewmostello)
+- #265: Added chunk function to split array into smaller arrays (thanks @karelbilek)
+- #270: Extend certificate functions to handle non-RSA keys + add support for
+ ed25519 keys (thanks @misberner)
+
+### Changed
+
+- Removed testing and support for Go 1.12. ed25519 support requires Go 1.13 or newer
+- Using semver 3.1.1 and mergo 0.3.11
+
+### Fixed
+
+- #249: Fix htmlDateInZone example (thanks @spawnia)
+
+NOTE: The dependency github.com/imdario/mergo reverted the breaking change in
+0.3.9 via 0.3.10 release.
+
## Release 3.1.0 (2020-04-16)
NOTE: The dependency github.com/imdario/mergo made a behavior change in 0.3.9
diff --git a/vendor/github.com/Masterminds/sprig/v3/crypto.go b/vendor/github.com/Masterminds/sprig/v3/crypto.go
index 7ae3991..13a5cd5 100644
--- a/vendor/github.com/Masterminds/sprig/v3/crypto.go
+++ b/vendor/github.com/Masterminds/sprig/v3/crypto.go
@@ -2,10 +2,12 @@ package sprig
import (
"bytes"
+ "crypto"
"crypto/aes"
"crypto/cipher"
"crypto/dsa"
"crypto/ecdsa"
+ "crypto/ed25519"
"crypto/elliptic"
"crypto/hmac"
"crypto/rand"
@@ -30,7 +32,7 @@ import (
"strings"
"github.com/google/uuid"
- "golang.org/x/crypto/bcrypt"
+ bcrypt_lib "golang.org/x/crypto/bcrypt"
"golang.org/x/crypto/scrypt"
)
@@ -49,15 +51,28 @@ func adler32sum(input string) string {
return fmt.Sprintf("%d", hash)
}
+func bcrypt(input string) string {
+ hash, err := bcrypt_lib.GenerateFromPassword([]byte(input), bcrypt_lib.DefaultCost)
+ if err != nil {
+ return fmt.Sprintf("failed to encrypt string with bcrypt: %s", err)
+ }
+
+ return string(hash)
+}
+
func htpasswd(username string, password string) string {
if strings.Contains(username, ":") {
return fmt.Sprintf("invalid username: %s", username)
}
- hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
- if err != nil {
- return fmt.Sprintf("failed to create htpasswd: %s", err)
+ return fmt.Sprintf("%s:%s", username, bcrypt(password))
+}
+
+func randBytes(count int) (string, error) {
+ buf := make([]byte, count)
+ if _, err := rand.Read(buf); err != nil {
+ return "", err
}
- return fmt.Sprintf("%s:%s", username, hash)
+ return base64.StdEncoding.EncodeToString(buf), nil
}
// uuidv4 provides a safe and secure UUID v4 implementation
@@ -147,6 +162,8 @@ func generatePrivateKey(typ string) string {
case "ecdsa":
// again, good enough for government work
priv, err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+ case "ed25519":
+ _, priv, err = ed25519.GenerateKey(rand.Reader)
default:
return "Unknown type " + typ
}
@@ -179,7 +196,73 @@ func pemBlockForKey(priv interface{}) *pem.Block {
b, _ := x509.MarshalECPrivateKey(k)
return &pem.Block{Type: "EC PRIVATE KEY", Bytes: b}
default:
- return nil
+ // attempt PKCS#8 format for all other keys
+ b, err := x509.MarshalPKCS8PrivateKey(k)
+ if err != nil {
+ return nil
+ }
+ return &pem.Block{Type: "PRIVATE KEY", Bytes: b}
+ }
+}
+
+func parsePrivateKeyPEM(pemBlock string) (crypto.PrivateKey, error) {
+ block, _ := pem.Decode([]byte(pemBlock))
+ if block == nil {
+ return nil, errors.New("no PEM data in input")
+ }
+
+ if block.Type == "PRIVATE KEY" {
+ priv, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+ if err != nil {
+ return nil, fmt.Errorf("decoding PEM as PKCS#8: %s", err)
+ }
+ return priv, nil
+ } else if !strings.HasSuffix(block.Type, " PRIVATE KEY") {
+ return nil, fmt.Errorf("no private key data in PEM block of type %s", block.Type)
+ }
+
+ switch block.Type[:len(block.Type)-12] { // strip " PRIVATE KEY"
+ case "RSA":
+ priv, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+ if err != nil {
+ return nil, fmt.Errorf("parsing RSA private key from PEM: %s", err)
+ }
+ return priv, nil
+ case "EC":
+ priv, err := x509.ParseECPrivateKey(block.Bytes)
+ if err != nil {
+ return nil, fmt.Errorf("parsing EC private key from PEM: %s", err)
+ }
+ return priv, nil
+ case "DSA":
+ var k DSAKeyFormat
+ _, err := asn1.Unmarshal(block.Bytes, &k)
+ if err != nil {
+ return nil, fmt.Errorf("parsing DSA private key from PEM: %s", err)
+ }
+ priv := &dsa.PrivateKey{
+ PublicKey: dsa.PublicKey{
+ Parameters: dsa.Parameters{
+ P: k.P, Q: k.Q, G: k.G,
+ },
+ Y: k.Y,
+ },
+ X: k.X,
+ }
+ return priv, nil
+ default:
+ return nil, fmt.Errorf("invalid private key type %s", block.Type)
+ }
+}
+
+func getPublicKey(priv crypto.PrivateKey) (crypto.PublicKey, error) {
+ switch k := priv.(type) {
+ case interface{ Public() crypto.PublicKey }:
+ return k.Public(), nil
+ case *dsa.PrivateKey:
+ return &k.PublicKey, nil
+ default:
+ return nil, fmt.Errorf("unable to get public key for type %T", priv)
}
}
@@ -213,14 +296,10 @@ func buildCustomCertificate(b64cert string, b64key string) (certificate, error)
)
}
- decodedKey, _ := pem.Decode(key)
- if decodedKey == nil {
- return crt, errors.New("unable to decode key")
- }
- _, err = x509.ParsePKCS1PrivateKey(decodedKey.Bytes)
+ _, err = parsePrivateKeyPEM(string(key))
if err != nil {
return crt, fmt.Errorf(
- "error parsing prive key: decodedKey.Bytes: %s",
+ "error parsing private key: %s",
err,
)
}
@@ -234,6 +313,31 @@ func buildCustomCertificate(b64cert string, b64key string) (certificate, error)
func generateCertificateAuthority(
cn string,
daysValid int,
+) (certificate, error) {
+ priv, err := rsa.GenerateKey(rand.Reader, 2048)
+ if err != nil {
+ return certificate{}, fmt.Errorf("error generating rsa key: %s", err)
+ }
+
+ return generateCertificateAuthorityWithKeyInternal(cn, daysValid, priv)
+}
+
+func generateCertificateAuthorityWithPEMKey(
+ cn string,
+ daysValid int,
+ privPEM string,
+) (certificate, error) {
+ priv, err := parsePrivateKeyPEM(privPEM)
+ if err != nil {
+ return certificate{}, fmt.Errorf("parsing private key: %s", err)
+ }
+ return generateCertificateAuthorityWithKeyInternal(cn, daysValid, priv)
+}
+
+func generateCertificateAuthorityWithKeyInternal(
+ cn string,
+ daysValid int,
+ priv crypto.PrivateKey,
) (certificate, error) {
ca := certificate{}
@@ -247,11 +351,6 @@ func generateCertificateAuthority(
x509.KeyUsageCertSign
template.IsCA = true
- priv, err := rsa.GenerateKey(rand.Reader, 2048)
- if err != nil {
- return ca, fmt.Errorf("error generating rsa key: %s", err)
- }
-
ca.Cert, ca.Key, err = getCertAndKey(template, priv, template, priv)
return ca, err
@@ -263,16 +362,39 @@ func generateSelfSignedCertificate(
alternateDNS []interface{},
daysValid int,
) (certificate, error) {
- cert := certificate{}
+ priv, err := rsa.GenerateKey(rand.Reader, 2048)
+ if err != nil {
+ return certificate{}, fmt.Errorf("error generating rsa key: %s", err)
+ }
+ return generateSelfSignedCertificateWithKeyInternal(cn, ips, alternateDNS, daysValid, priv)
+}
- template, err := getBaseCertTemplate(cn, ips, alternateDNS, daysValid)
+func generateSelfSignedCertificateWithPEMKey(
+ cn string,
+ ips []interface{},
+ alternateDNS []interface{},
+ daysValid int,
+ privPEM string,
+) (certificate, error) {
+ priv, err := parsePrivateKeyPEM(privPEM)
if err != nil {
- return cert, err
+ return certificate{}, fmt.Errorf("parsing private key: %s", err)
}
+ return generateSelfSignedCertificateWithKeyInternal(cn, ips, alternateDNS, daysValid, priv)
+}
- priv, err := rsa.GenerateKey(rand.Reader, 2048)
+func generateSelfSignedCertificateWithKeyInternal(
+ cn string,
+ ips []interface{},
+ alternateDNS []interface{},
+ daysValid int,
+ priv crypto.PrivateKey,
+) (certificate, error) {
+ cert := certificate{}
+
+ template, err := getBaseCertTemplate(cn, ips, alternateDNS, daysValid)
if err != nil {
- return cert, fmt.Errorf("error generating rsa key: %s", err)
+ return cert, err
}
cert.Cert, cert.Key, err = getCertAndKey(template, priv, template, priv)
@@ -286,6 +408,36 @@ func generateSignedCertificate(
alternateDNS []interface{},
daysValid int,
ca certificate,
+) (certificate, error) {
+ priv, err := rsa.GenerateKey(rand.Reader, 2048)
+ if err != nil {
+ return certificate{}, fmt.Errorf("error generating rsa key: %s", err)
+ }
+ return generateSignedCertificateWithKeyInternal(cn, ips, alternateDNS, daysValid, ca, priv)
+}
+
+func generateSignedCertificateWithPEMKey(
+ cn string,
+ ips []interface{},
+ alternateDNS []interface{},
+ daysValid int,
+ ca certificate,
+ privPEM string,
+) (certificate, error) {
+ priv, err := parsePrivateKeyPEM(privPEM)
+ if err != nil {
+ return certificate{}, fmt.Errorf("parsing private key: %s", err)
+ }
+ return generateSignedCertificateWithKeyInternal(cn, ips, alternateDNS, daysValid, ca, priv)
+}
+
+func generateSignedCertificateWithKeyInternal(
+ cn string,
+ ips []interface{},
+ alternateDNS []interface{},
+ daysValid int,
+ ca certificate,
+ priv crypto.PrivateKey,
) (certificate, error) {
cert := certificate{}
@@ -300,14 +452,10 @@ func generateSignedCertificate(
err,
)
}
- decodedSignerKey, _ := pem.Decode([]byte(ca.Key))
- if decodedSignerKey == nil {
- return cert, errors.New("unable to decode key")
- }
- signerKey, err := x509.ParsePKCS1PrivateKey(decodedSignerKey.Bytes)
+ signerKey, err := parsePrivateKeyPEM(ca.Key)
if err != nil {
return cert, fmt.Errorf(
- "error parsing prive key: decodedSignerKey.Bytes: %s",
+ "error parsing private key: %s",
err,
)
}
@@ -317,11 +465,6 @@ func generateSignedCertificate(
return cert, err
}
- priv, err := rsa.GenerateKey(rand.Reader, 2048)
- if err != nil {
- return cert, fmt.Errorf("error generating rsa key: %s", err)
- }
-
cert.Cert, cert.Key, err = getCertAndKey(
template,
priv,
@@ -334,15 +477,19 @@ func generateSignedCertificate(
func getCertAndKey(
template *x509.Certificate,
- signeeKey *rsa.PrivateKey,
+ signeeKey crypto.PrivateKey,
parent *x509.Certificate,
- signingKey *rsa.PrivateKey,
+ signingKey crypto.PrivateKey,
) (string, string, error) {
+ signeePubKey, err := getPublicKey(signeeKey)
+ if err != nil {
+ return "", "", fmt.Errorf("error retrieving public key from signee key: %s", err)
+ }
derBytes, err := x509.CreateCertificate(
rand.Reader,
template,
parent,
- &signeeKey.PublicKey,
+ signeePubKey,
signingKey,
)
if err != nil {
@@ -360,10 +507,7 @@ func getCertAndKey(
keyBuffer := bytes.Buffer{}
if err := pem.Encode(
&keyBuffer,
- &pem.Block{
- Type: "RSA PRIVATE KEY",
- Bytes: x509.MarshalPKCS1PrivateKey(signeeKey),
- },
+ pemBlockForKey(signeeKey),
); err != nil {
return "", "", fmt.Errorf("error pem-encoding key: %s", err)
}
diff --git a/vendor/github.com/Masterminds/sprig/v3/defaults.go b/vendor/github.com/Masterminds/sprig/v3/defaults.go
index 97d7d6e..b9f9796 100644
--- a/vendor/github.com/Masterminds/sprig/v3/defaults.go
+++ b/vendor/github.com/Masterminds/sprig/v3/defaults.go
@@ -3,10 +3,16 @@ package sprig
import (
"bytes"
"encoding/json"
+ "math/rand"
"reflect"
"strings"
+ "time"
)
+func init() {
+ rand.Seed(time.Now().UnixNano())
+}
+
// dfault checks whether `given` is set, and returns default if not set.
//
// This returns `d` if `given` appears not to be set, and `given` otherwise.
@@ -63,6 +69,41 @@ func coalesce(v ...interface{}) interface{} {
return nil
}
+// all returns true if empty(x) is false for all values x in the list.
+// If the list is empty, return true.
+func all(v ...interface{}) bool {
+ for _, val := range v {
+ if empty(val) {
+ return false
+ }
+ }
+ return true
+}
+
+// any returns true if empty(x) is false for any x in the list.
+// If the list is empty, return false.
+func any(v ...interface{}) bool {
+ for _, val := range v {
+ if !empty(val) {
+ return true
+ }
+ }
+ return false
+}
+
+// fromJson decodes JSON into a structured value, ignoring errors.
+func fromJson(v string) interface{} {
+ output, _ := mustFromJson(v)
+ return output
+}
+
+// mustFromJson decodes JSON into a structured value, returning errors.
+func mustFromJson(v string) (interface{}, error) {
+ var output interface{}
+ err := json.Unmarshal([]byte(v), &output)
+ return output, err
+}
+
// toJson encodes an item into a JSON string
func toJson(v interface{}) string {
output, _ := json.Marshal(v)
diff --git a/vendor/github.com/Masterminds/sprig/v3/dict.go b/vendor/github.com/Masterminds/sprig/v3/dict.go
index 11d943f..ade8896 100644
--- a/vendor/github.com/Masterminds/sprig/v3/dict.go
+++ b/vendor/github.com/Masterminds/sprig/v3/dict.go
@@ -146,3 +146,29 @@ func deepCopy(i interface{}) interface{} {
func mustDeepCopy(i interface{}) (interface{}, error) {
return copystructure.Copy(i)
}
+
+func dig(ps ...interface{}) (interface{}, error) {
+ if len(ps) < 3 {
+ panic("dig needs at least three arguments")
+ }
+ dict := ps[len(ps)-1].(map[string]interface{})
+ def := ps[len(ps)-2]
+ ks := make([]string, len(ps)-2)
+ for i := 0; i < len(ks); i++ {
+ ks[i] = ps[i].(string)
+ }
+
+ return digFromDict(dict, def, ks)
+}
+
+func digFromDict(dict map[string]interface{}, d interface{}, ks []string) (interface{}, error) {
+ k, ns := ks[0], ks[1:len(ks)]
+ step, has := dict[k]
+ if !has {
+ return d, nil
+ }
+ if len(ns) == 0 {
+ return step, nil
+ }
+ return digFromDict(step.(map[string]interface{}), d, ns)
+}
diff --git a/vendor/github.com/Masterminds/sprig/v3/functions.go b/vendor/github.com/Masterminds/sprig/v3/functions.go
index c16e9c3..57fcec1 100644
--- a/vendor/github.com/Masterminds/sprig/v3/functions.go
+++ b/vendor/github.com/Masterminds/sprig/v3/functions.go
@@ -3,8 +3,10 @@ package sprig
import (
"errors"
"html/template"
+ "math/rand"
"os"
"path"
+ "path/filepath"
"reflect"
"strconv"
"strings"
@@ -13,6 +15,7 @@ import (
util "github.com/Masterminds/goutils"
"github.com/huandu/xstrings"
+ "github.com/shopspring/decimal"
)
// FuncMap produces the function map.
@@ -80,6 +83,7 @@ var nonhermeticFunctions = []string{
"randAlpha",
"randAscii",
"randNumeric",
+ "randBytes",
"uuidv4",
// OS
@@ -200,9 +204,28 @@ var genericMap = map[string]interface{}{
}
return val
},
+ "randInt": func(min, max int) int { return rand.Intn(max-min) + min },
+ "add1f": func(i interface{}) float64 {
+ return execDecimalOp(i, []interface{}{1}, func(d1, d2 decimal.Decimal) decimal.Decimal { return d1.Add(d2) })
+ },
+ "addf": func(i ...interface{}) float64 {
+ a := interface{}(float64(0))
+ return execDecimalOp(a, i, func(d1, d2 decimal.Decimal) decimal.Decimal { return d1.Add(d2) })
+ },
+ "subf": func(a interface{}, v ...interface{}) float64 {
+ return execDecimalOp(a, v, func(d1, d2 decimal.Decimal) decimal.Decimal { return d1.Sub(d2) })
+ },
+ "divf": func(a interface{}, v ...interface{}) float64 {
+ return execDecimalOp(a, v, func(d1, d2 decimal.Decimal) decimal.Decimal { return d1.Div(d2) })
+ },
+ "mulf": func(a interface{}, v ...interface{}) float64 {
+ return execDecimalOp(a, v, func(d1, d2 decimal.Decimal) decimal.Decimal { return d1.Mul(d2) })
+ },
"biggest": max,
"max": max,
"min": min,
+ "maxf": maxf,
+ "minf": minf,
"ceil": ceil,
"floor": floor,
"round": round,
@@ -216,11 +239,15 @@ var genericMap = map[string]interface{}{
"default": dfault,
"empty": empty,
"coalesce": coalesce,
+ "all": all,
+ "any": any,
"compact": compact,
"mustCompact": mustCompact,
+ "fromJson": fromJson,
"toJson": toJson,
"toPrettyJson": toPrettyJson,
"toRawJson": toRawJson,
+ "mustFromJson": mustFromJson,
"mustToJson": mustToJson,
"mustToPrettyJson": mustToPrettyJson,
"mustToRawJson": mustToRawJson,
@@ -243,13 +270,20 @@ var genericMap = map[string]interface{}{
// Network:
"getHostByName": getHostByName,
- // File Paths:
+ // Paths:
"base": path.Base,
"dir": path.Dir,
"clean": path.Clean,
"ext": path.Ext,
"isAbs": path.IsAbs,
+ // Filepaths:
+ "osBase": filepath.Base,
+ "osClean": filepath.Clean,
+ "osDir": filepath.Dir,
+ "osExt": filepath.Ext,
+ "osIsAbs": filepath.IsAbs,
+
// Encoding:
"b64enc": base64encode,
"b64dec": base64decode,
@@ -297,17 +331,25 @@ var genericMap = map[string]interface{}{
"slice": slice,
"mustSlice": mustSlice,
"concat": concat,
+ "dig": dig,
+ "chunk": chunk,
+ "mustChunk": mustChunk,
// Crypto:
+ "bcrypt": bcrypt,
"htpasswd": htpasswd,
"genPrivateKey": generatePrivateKey,
"derivePassword": derivePassword,
"buildCustomCert": buildCustomCertificate,
"genCA": generateCertificateAuthority,
+ "genCAWithKey": generateCertificateAuthorityWithPEMKey,
"genSelfSignedCert": generateSelfSignedCertificate,
+ "genSelfSignedCertWithKey": generateSelfSignedCertificateWithPEMKey,
"genSignedCert": generateSignedCertificate,
+ "genSignedCertWithKey": generateSignedCertificateWithPEMKey,
"encryptAES": encryptAES,
"decryptAES": decryptAES,
+ "randBytes": randBytes,
// UUIDs:
"uuidv4": uuidv4,
@@ -332,6 +374,7 @@ var genericMap = map[string]interface{}{
"mustRegexReplaceAllLiteral": mustRegexReplaceAllLiteral,
"regexSplit": regexSplit,
"mustRegexSplit": mustRegexSplit,
+ "regexQuoteMeta": regexQuoteMeta,
// URLs:
"urlParse": urlParse,
diff --git a/vendor/github.com/Masterminds/sprig/v3/go.mod b/vendor/github.com/Masterminds/sprig/v3/go.mod
index e064b8d..672e04f 100644
--- a/vendor/github.com/Masterminds/sprig/v3/go.mod
+++ b/vendor/github.com/Masterminds/sprig/v3/go.mod
@@ -4,11 +4,12 @@ go 1.13
require (
github.com/Masterminds/goutils v1.1.0
- github.com/Masterminds/semver/v3 v3.1.0
+ github.com/Masterminds/semver/v3 v3.1.1
github.com/google/uuid v1.1.1
github.com/huandu/xstrings v1.3.1
- github.com/imdario/mergo v0.3.8
+ github.com/imdario/mergo v0.3.11
github.com/mitchellh/copystructure v1.0.0
+ github.com/shopspring/decimal v1.2.0
github.com/spf13/cast v1.3.1
github.com/stretchr/testify v1.5.1
golang.org/x/crypto v0.0.0-20200414173820-0848c9571904
diff --git a/vendor/github.com/Masterminds/sprig/v3/go.sum b/vendor/github.com/Masterminds/sprig/v3/go.sum
index 47157a6..c1c4779 100644
--- a/vendor/github.com/Masterminds/sprig/v3/go.sum
+++ b/vendor/github.com/Masterminds/sprig/v3/go.sum
@@ -1,49 +1,41 @@
github.com/Masterminds/goutils v1.1.0 h1:zukEsf/1JZwCMgHiK3GZftabmxiCw4apj3a28RPBiVg=
github.com/Masterminds/goutils v1.1.0/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
-github.com/Masterminds/semver/v3 v3.0.1 h1:2kKm5lb7dKVrt5TYUiAavE6oFc1cFT0057UVGT+JqLk=
-github.com/Masterminds/semver/v3 v3.0.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
-github.com/Masterminds/semver/v3 v3.0.2 h1:tRi7ENs+AaOUCH+j6qwNQgPYfV26dX3JNonq+V4mhqc=
-github.com/Masterminds/semver/v3 v3.0.2/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
-github.com/Masterminds/semver/v3 v3.0.3 h1:znjIyLfpXEDQjOIEWh+ehwpTU14UzUPub3c3sm36u14=
-github.com/Masterminds/semver/v3 v3.0.3/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
github.com/Masterminds/semver/v3 v3.1.0 h1:Y2lUDsFKVRSYGojLJ1yLxSXdMmMYTYls0rCvoqmMUQk=
github.com/Masterminds/semver/v3 v3.1.0/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
+github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
+github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/huandu/xstrings v1.2.0 h1:yPeWdRnmynF7p+lLYz0H2tthW9lqhMJrQV/U7yy4wX0=
-github.com/huandu/xstrings v1.2.0/go.mod h1:DvyZB1rfVYsBIigL8HwpZgxHwXozlTgGqn63UyNX5k4=
github.com/huandu/xstrings v1.3.1 h1:4jgBlKK6tLKFvO8u5pmYjG91cqytmDCDvGh7ECVFfFs=
github.com/huandu/xstrings v1.3.1/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
-github.com/imdario/mergo v0.3.7 h1:Y+UAYTZ7gDEuOfhxKWy+dvb5dRQ6rJjFSdX2HZY1/gI=
-github.com/imdario/mergo v0.3.7/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/imdario/mergo v0.3.8 h1:CGgOkSJeqMRmt0D9XLWExdT4m4F1vd3FV3VPt+0VxkQ=
github.com/imdario/mergo v0.3.8/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/imdario/mergo v0.3.9 h1:UauaLniWCFHWd+Jp9oCEkTBj8VO/9DKg3PV3VCNMDIg=
github.com/imdario/mergo v0.3.9/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
+github.com/imdario/mergo v0.3.10 h1:6q5mVkdH/vYmqngx7kZQTjJ5HRsx+ImorDIEQ+beJgc=
+github.com/imdario/mergo v0.3.10/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
+github.com/imdario/mergo v0.3.11 h1:3tnifQM4i+fbajXKBHXWEH+KvNHqojZ778UH75j3bGA=
+github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
github.com/mitchellh/copystructure v1.0.0 h1:Laisrj+bAB6b/yJwB5Bt3ITZhGJdqmxquMKeZ+mmkFQ=
github.com/mitchellh/copystructure v1.0.0/go.mod h1:SNtv71yrdKgLRyLFxmLdkAbkKEFWgYaq1OVrnRcwhnw=
github.com/mitchellh/reflectwalk v1.0.0 h1:9D+8oIskB4VJBN5SFlmc27fSlIBZaov1Wpk/IfikLNY=
github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/spf13/cast v1.3.0 h1:oget//CVOEoFewqQxwr0Ej5yjygnqGkvggSE/gB35Q8=
-github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
+github.com/shopspring/decimal v1.2.0 h1:abSATXmQEYyShuxI4/vyW3tV1MrKAJzCZ/0zLUXYbsQ=
+github.com/shopspring/decimal v1.2.0/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
github.com/spf13/cast v1.3.1 h1:nFm6S0SMdyzrzcmThSipiEubIDy8WEXKNZ0UOgiRpng=
github.com/spf13/cast v1.3.1/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20190911031432-227b76d455e7 h1:0hQKqeLdqlt5iIwVOBErRisrHJAN57yOiPRQItI20fU=
-golang.org/x/crypto v0.0.0-20190911031432-227b76d455e7/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200414173820-0848c9571904 h1:bXoxMPcSLOq08zI3/c5dEBT6lE4eh+jOh886GHrn6V8=
golang.org/x/crypto v0.0.0-20200414173820-0848c9571904/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
@@ -54,3 +46,5 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/vendor/github.com/Masterminds/sprig/v3/list.go b/vendor/github.com/Masterminds/sprig/v3/list.go
index 063fe4f..ca0fbb7 100644
--- a/vendor/github.com/Masterminds/sprig/v3/list.go
+++ b/vendor/github.com/Masterminds/sprig/v3/list.go
@@ -2,6 +2,7 @@ package sprig
import (
"fmt"
+ "math"
"reflect"
"sort"
)
@@ -72,6 +73,50 @@ func mustPrepend(list interface{}, v interface{}) ([]interface{}, error) {
}
}
+func chunk(size int, list interface{}) [][]interface{} {
+ l, err := mustChunk(size, list)
+ if err != nil {
+ panic(err)
+ }
+
+ return l
+}
+
+func mustChunk(size int, list interface{}) ([][]interface{}, error) {
+ tp := reflect.TypeOf(list).Kind()
+ switch tp {
+ case reflect.Slice, reflect.Array:
+ l2 := reflect.ValueOf(list)
+
+ l := l2.Len()
+
+ cs := int(math.Floor(float64(l-1)/float64(size)) + 1)
+ nl := make([][]interface{}, cs)
+
+ for i := 0; i < cs; i++ {
+ clen := size
+ if i == cs-1 {
+ clen = int(math.Floor(math.Mod(float64(l), float64(size))))
+ if clen == 0 {
+ clen = size
+ }
+ }
+
+ nl[i] = make([]interface{}, clen)
+
+ for j := 0; j < clen; j++ {
+ ix := i*size + j
+ nl[i][j] = l2.Index(ix).Interface()
+ }
+ }
+
+ return nl, nil
+
+ default:
+ return nil, fmt.Errorf("Cannot chunk type %s", tp)
+ }
+}
+
func last(list interface{}) interface{} {
l, err := mustLast(list)
if err != nil {
diff --git a/vendor/github.com/Masterminds/sprig/v3/network.go b/vendor/github.com/Masterminds/sprig/v3/network.go
index d786cc7..108d78a 100644
--- a/vendor/github.com/Masterminds/sprig/v3/network.go
+++ b/vendor/github.com/Masterminds/sprig/v3/network.go
@@ -7,6 +7,6 @@ import (
func getHostByName(name string) string {
addrs, _ := net.LookupHost(name)
- //TODO: add error handing when release v3 cames out
+ //TODO: add error handing when release v3 comes out
return addrs[rand.Intn(len(addrs))]
}
diff --git a/vendor/github.com/Masterminds/sprig/v3/numeric.go b/vendor/github.com/Masterminds/sprig/v3/numeric.go
index 638ef27..f68e418 100644
--- a/vendor/github.com/Masterminds/sprig/v3/numeric.go
+++ b/vendor/github.com/Masterminds/sprig/v3/numeric.go
@@ -7,6 +7,7 @@ import (
"strings"
"github.com/spf13/cast"
+ "github.com/shopspring/decimal"
)
// toFloat64 converts 64-bit floats
@@ -34,6 +35,15 @@ func max(a interface{}, i ...interface{}) int64 {
return aa
}
+func maxf(a interface{}, i ...interface{}) float64 {
+ aa := toFloat64(a)
+ for _, b := range i {
+ bb := toFloat64(b)
+ aa = math.Max(aa, bb)
+ }
+ return aa
+}
+
func min(a interface{}, i ...interface{}) int64 {
aa := toInt64(a)
for _, b := range i {
@@ -45,6 +55,15 @@ func min(a interface{}, i ...interface{}) int64 {
return aa
}
+func minf(a interface{}, i ...interface{}) float64 {
+ aa := toFloat64(a)
+ for _, b := range i {
+ bb := toFloat64(b)
+ aa = math.Min(aa, bb)
+ }
+ return aa
+}
+
func until(count int) []int {
step := 1
if count < 0 {
@@ -153,3 +172,15 @@ func seq(params ...int) string {
func intArrayToString(slice []int, delimeter string) string {
return strings.Trim(strings.Join(strings.Fields(fmt.Sprint(slice)), delimeter), "[]")
}
+
+// performs a float and subsequent decimal.Decimal conversion on inputs,
+// and iterates through a and b executing the mathmetical operation f
+func execDecimalOp(a interface{}, b []interface{}, f func(d1, d2 decimal.Decimal) decimal.Decimal) float64 {
+ prt := decimal.NewFromFloat(toFloat64(a))
+ for _, x := range b {
+ dx := decimal.NewFromFloat(toFloat64(x))
+ prt = f(prt, dx)
+ }
+ rslt, _ := prt.Float64()
+ return rslt
+}
diff --git a/vendor/github.com/Masterminds/sprig/v3/regex.go b/vendor/github.com/Masterminds/sprig/v3/regex.go
index 2370878..fab5510 100644
--- a/vendor/github.com/Masterminds/sprig/v3/regex.go
+++ b/vendor/github.com/Masterminds/sprig/v3/regex.go
@@ -77,3 +77,7 @@ func mustRegexSplit(regex string, s string, n int) ([]string, error) {
}
return r.Split(s, n), nil
}
+
+func regexQuoteMeta(s string) string {
+ return regexp.QuoteMeta(s)
+}
diff --git a/vendor/github.com/imdario/mergo/README.md b/vendor/github.com/imdario/mergo/README.md
index 02fc81e..876abb5 100644
--- a/vendor/github.com/imdario/mergo/README.md
+++ b/vendor/github.com/imdario/mergo/README.md
@@ -1,44 +1,54 @@
# Mergo
-A helper to merge structs and maps in Golang. Useful for configuration default values, avoiding messy if-statements.
-
-Also a lovely [comune](http://en.wikipedia.org/wiki/Mergo) (municipality) in the Province of Ancona in the Italian region of Marche.
-
-## Status
-
-It is ready for production use. [It is used in several projects by Docker, Google, The Linux Foundation, VMWare, Shopify, etc](https://github.com/imdario/mergo#mergo-in-the-wild).
[![GoDoc][3]][4]
-[![GoCard][5]][6]
+[![GitHub release][5]][6]
+[![GoCard][7]][8]
[![Build Status][1]][2]
-[![Coverage Status][7]][8]
-[![Sourcegraph][9]][10]
-[](https://app.fossa.io/projects/git%2Bgithub.com%2Fimdario%2Fmergo?ref=badge_shield)
+[![Coverage Status][9]][10]
+[![Sourcegraph][11]][12]
+[![FOSSA Status][13]][14]
+
+[![GoCenter Kudos][15]][16]
[1]: https://travis-ci.org/imdario/mergo.png
[2]: https://travis-ci.org/imdario/mergo
[3]: https://godoc.org/github.com/imdario/mergo?status.svg
[4]: https://godoc.org/github.com/imdario/mergo
-[5]: https://goreportcard.com/badge/imdario/mergo
-[6]: https://goreportcard.com/report/github.com/imdario/mergo
-[7]: https://coveralls.io/repos/github/imdario/mergo/badge.svg?branch=master
-[8]: https://coveralls.io/github/imdario/mergo?branch=master
-[9]: https://sourcegraph.com/github.com/imdario/mergo/-/badge.svg
-[10]: https://sourcegraph.com/github.com/imdario/mergo?badge
+[5]: https://img.shields.io/github/release/imdario/mergo.svg
+[6]: https://github.com/imdario/mergo/releases
+[7]: https://goreportcard.com/badge/imdario/mergo
+[8]: https://goreportcard.com/report/github.com/imdario/mergo
+[9]: https://coveralls.io/repos/github/imdario/mergo/badge.svg?branch=master
+[10]: https://coveralls.io/github/imdario/mergo?branch=master
+[11]: https://sourcegraph.com/github.com/imdario/mergo/-/badge.svg
+[12]: https://sourcegraph.com/github.com/imdario/mergo?badge
+[13]: https://app.fossa.io/api/projects/git%2Bgithub.com%2Fimdario%2Fmergo.svg?type=shield
+[14]: https://app.fossa.io/projects/git%2Bgithub.com%2Fimdario%2Fmergo?ref=badge_shield
+[15]: https://search.gocenter.io/api/ui/badge/github.com%2Fimdario%2Fmergo
+[16]: https://search.gocenter.io/github.com/imdario/mergo
-### Latest release
+A helper to merge structs and maps in Golang. Useful for configuration default values, avoiding messy if-statements.
-[Release v0.3.7](https://github.com/imdario/mergo/releases/tag/v0.3.7).
+Mergo merges same-type structs and maps by setting default values in zero-value fields. Mergo won't merge unexported (private) fields. It will do recursively any exported one. It also won't merge structs inside maps (because they are not addressable using Go reflection).
+
+Also a lovely [comune](http://en.wikipedia.org/wiki/Mergo) (municipality) in the Province of Ancona in the Italian region of Marche.
+
+## Status
+
+It is ready for production use. [It is used in several projects by Docker, Google, The Linux Foundation, VMWare, Shopify, etc](https://github.com/imdario/mergo#mergo-in-the-wild).
### Important note
-Please keep in mind that in [0.3.2](//github.com/imdario/mergo/releases/tag/0.3.2) Mergo changed `Merge()`and `Map()` signatures to support [transformers](#transformers). An optional/variadic argument has been added, so it won't break existing code.
+Please keep in mind that a problematic PR broke [0.3.9](//github.com/imdario/mergo/releases/tag/0.3.9). I reverted it in [0.3.10](//github.com/imdario/mergo/releases/tag/0.3.10), and I consider it stable but not bug-free. Also, this version adds suppot for go modules.
-If you were using Mergo **before** April 6th 2015, please check your project works as intended after updating your local copy with ```go get -u github.com/imdario/mergo```. I apologize for any issue caused by its previous behavior and any future bug that Mergo could cause (I hope it won't!) in existing projects after the change (release 0.2.0).
+Keep in mind that in [0.3.2](//github.com/imdario/mergo/releases/tag/0.3.2), Mergo changed `Merge()`and `Map()` signatures to support [transformers](#transformers). I added an optional/variadic argument so that it won't break the existing code.
+
+If you were using Mergo before April 6th, 2015, please check your project works as intended after updating your local copy with ```go get -u github.com/imdario/mergo```. I apologize for any issue caused by its previous behavior and any future bug that Mergo could cause in existing projects after the change (release 0.2.0).
### Donations
-If Mergo is useful to you, consider buying me a coffee, a beer or making a monthly donation so I can keep building great free software. :heart_eyes:
+If Mergo is useful to you, consider buying me a coffee, a beer, or making a monthly donation to allow me to keep building great free software. :heart_eyes:
[](https://beerpay.io/imdario/mergo)
@@ -87,8 +97,9 @@ If Mergo is useful to you, consider buying me a coffee, a beer or making a month
- [mantasmatelis/whooplist-server](https://github.com/mantasmatelis/whooplist-server)
- [jnuthong/item_search](https://github.com/jnuthong/item_search)
- [bukalapak/snowboard](https://github.com/bukalapak/snowboard)
+- [janoszen/containerssh](https://github.com/janoszen/containerssh)
-## Installation
+## Install
go get github.com/imdario/mergo
@@ -99,7 +110,7 @@ If Mergo is useful to you, consider buying me a coffee, a beer or making a month
## Usage
-You can only merge same-type structs with exported fields initialized as zero value of their type and same-types maps. Mergo won't merge unexported (private) fields but will do recursively any exported one. It won't merge empty structs value as [they are not considered zero values](https://golang.org/ref/spec#The_zero_value) either. Also maps will be merged recursively except for structs inside maps (because they are not addressable using Go reflection).
+You can only merge same-type structs with exported fields initialized as zero value of their type and same-types maps. Mergo won't merge unexported (private) fields but will do recursively any exported one. It won't merge empty structs value as [they are zero values](https://golang.org/ref/spec#The_zero_value) too. Also, maps will be merged recursively except for structs inside maps (because they are not addressable using Go reflection).
```go
if err := mergo.Merge(&dst, src); err != nil {
@@ -125,9 +136,7 @@ if err := mergo.Map(&dst, srcMap); err != nil {
Warning: if you map a struct to map, it won't do it recursively. Don't expect Mergo to map struct members of your struct as `map[string]interface{}`. They will be just assigned as values.
-More information and examples in [godoc documentation](http://godoc.org/github.com/imdario/mergo).
-
-### Nice example
+Here is a nice example:
```go
package main
@@ -175,10 +184,10 @@ import (
"time"
)
-type timeTransfomer struct {
+type timeTransformer struct {
}
-func (t timeTransfomer) Transformer(typ reflect.Type) func(dst, src reflect.Value) error {
+func (t timeTransformer) Transformer(typ reflect.Type) func(dst, src reflect.Value) error {
if typ == reflect.TypeOf(time.Time{}) {
return func(dst, src reflect.Value) error {
if dst.CanSet() {
@@ -202,7 +211,7 @@ type Snapshot struct {
func main() {
src := Snapshot{time.Now()}
dest := Snapshot{}
- mergo.Merge(&dest, src, mergo.WithTransformers(timeTransfomer{}))
+ mergo.Merge(&dest, src, mergo.WithTransformers(timeTransformer{}))
fmt.Println(dest)
// Will print
// { 2018-01-12 01:15:00 +0000 UTC m=+0.000000001 }
diff --git a/vendor/github.com/imdario/mergo/doc.go b/vendor/github.com/imdario/mergo/doc.go
index 6e9aa7b..fcd985f 100644
--- a/vendor/github.com/imdario/mergo/doc.go
+++ b/vendor/github.com/imdario/mergo/doc.go
@@ -4,41 +4,140 @@
// license that can be found in the LICENSE file.
/*
-Package mergo merges same-type structs and maps by setting default values in zero-value fields.
+A helper to merge structs and maps in Golang. Useful for configuration default values, avoiding messy if-statements.
-Mergo won't merge unexported (private) fields but will do recursively any exported one. It also won't merge structs inside maps (because they are not addressable using Go reflection).
+Mergo merges same-type structs and maps by setting default values in zero-value fields. Mergo won't merge unexported (private) fields. It will do recursively any exported one. It also won't merge structs inside maps (because they are not addressable using Go reflection).
+
+Status
+
+It is ready for production use. It is used in several projects by Docker, Google, The Linux Foundation, VMWare, Shopify, etc.
+
+Important note
+
+Please keep in mind that a problematic PR broke 0.3.9. We reverted it in 0.3.10. We consider 0.3.10 as stable but not bug-free. . Also, this version adds suppot for go modules.
+
+Keep in mind that in 0.3.2, Mergo changed Merge() and Map() signatures to support transformers. We added an optional/variadic argument so that it won't break the existing code.
+
+If you were using Mergo before April 6th, 2015, please check your project works as intended after updating your local copy with go get -u github.com/imdario/mergo. I apologize for any issue caused by its previous behavior and any future bug that Mergo could cause in existing projects after the change (release 0.2.0).
+
+Install
+
+Do your usual installation procedure:
+
+ go get github.com/imdario/mergo
+
+ // use in your .go code
+ import (
+ "github.com/imdario/mergo"
+ )
Usage
-From my own work-in-progress project:
+You can only merge same-type structs with exported fields initialized as zero value of their type and same-types maps. Mergo won't merge unexported (private) fields but will do recursively any exported one. It won't merge empty structs value as they are zero values too. Also, maps will be merged recursively except for structs inside maps (because they are not addressable using Go reflection).
+
+ if err := mergo.Merge(&dst, src); err != nil {
+ // ...
+ }
+
+Also, you can merge overwriting values using the transformer WithOverride.
+
+ if err := mergo.Merge(&dst, src, mergo.WithOverride); err != nil {
+ // ...
+ }
+
+Additionally, you can map a map[string]interface{} to a struct (and otherwise, from struct to map), following the same restrictions as in Merge(). Keys are capitalized to find each corresponding exported field.
+
+ if err := mergo.Map(&dst, srcMap); err != nil {
+ // ...
+ }
+
+Warning: if you map a struct to map, it won't do it recursively. Don't expect Mergo to map struct members of your struct as map[string]interface{}. They will be just assigned as values.
+
+Here is a nice example:
+
+ package main
+
+ import (
+ "fmt"
+ "github.com/imdario/mergo"
+ )
- type networkConfig struct {
- Protocol string
- Address string
- ServerType string `json: "server_type"`
- Port uint16
+ type Foo struct {
+ A string
+ B int64
}
- type FssnConfig struct {
- Network networkConfig
+ func main() {
+ src := Foo{
+ A: "one",
+ B: 2,
+ }
+ dest := Foo{
+ A: "two",
+ }
+ mergo.Merge(&dest, src)
+ fmt.Println(dest)
+ // Will print
+ // {two 2}
}
- var fssnDefault = FssnConfig {
- networkConfig {
- "tcp",
- "127.0.0.1",
- "http",
- 31560,
- },
+Transformers
+
+Transformers allow to merge specific types differently than in the default behavior. In other words, now you can customize how some types are merged. For example, time.Time is a struct; it doesn't have zero value but IsZero can return true because it has fields with zero value. How can we merge a non-zero time.Time?
+
+ package main
+
+ import (
+ "fmt"
+ "github.com/imdario/mergo"
+ "reflect"
+ "time"
+ )
+
+ type timeTransformer struct {
}
- // Inside a function [...]
+ func (t timeTransformer) Transformer(typ reflect.Type) func(dst, src reflect.Value) error {
+ if typ == reflect.TypeOf(time.Time{}) {
+ return func(dst, src reflect.Value) error {
+ if dst.CanSet() {
+ isZero := dst.MethodByName("IsZero")
+ result := isZero.Call([]reflect.Value{})
+ if result[0].Bool() {
+ dst.Set(src)
+ }
+ }
+ return nil
+ }
+ }
+ return nil
+ }
+
+ type Snapshot struct {
+ Time time.Time
+ // ...
+ }
- if err := mergo.Merge(&config, fssnDefault); err != nil {
- log.Fatal(err)
+ func main() {
+ src := Snapshot{time.Now()}
+ dest := Snapshot{}
+ mergo.Merge(&dest, src, mergo.WithTransformers(timeTransformer{}))
+ fmt.Println(dest)
+ // Will print
+ // { 2018-01-12 01:15:00 +0000 UTC m=+0.000000001 }
}
- // More code [...]
+Contact me
+
+If I can help you, you have an idea or you are using Mergo in your projects, don't hesitate to drop me a line (or a pull request): https://twitter.com/im_dario
+
+About
+
+Written by Dario Castañé: https://da.rio.hn
+
+License
+
+BSD 3-Clause license, as Go language.
*/
package mergo
diff --git a/vendor/github.com/imdario/mergo/go.mod b/vendor/github.com/imdario/mergo/go.mod
new file mode 100644
index 0000000..3d689d9
--- /dev/null
+++ b/vendor/github.com/imdario/mergo/go.mod
@@ -0,0 +1,5 @@
+module github.com/imdario/mergo
+
+go 1.13
+
+require gopkg.in/yaml.v2 v2.3.0
diff --git a/vendor/github.com/imdario/mergo/go.sum b/vendor/github.com/imdario/mergo/go.sum
new file mode 100644
index 0000000..168980d
--- /dev/null
+++ b/vendor/github.com/imdario/mergo/go.sum
@@ -0,0 +1,4 @@
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/vendor/github.com/imdario/mergo/map.go b/vendor/github.com/imdario/mergo/map.go
index d83258b..a13a7ee 100644
--- a/vendor/github.com/imdario/mergo/map.go
+++ b/vendor/github.com/imdario/mergo/map.go
@@ -99,11 +99,11 @@ func deepMap(dst, src reflect.Value, visited map[uintptr]*visit, depth int, conf
continue
}
if srcKind == dstKind {
- if _, err = deepMerge(dstElement, srcElement, visited, depth+1, config); err != nil {
+ if err = deepMerge(dstElement, srcElement, visited, depth+1, config); err != nil {
return
}
} else if dstKind == reflect.Interface && dstElement.Kind() == reflect.Interface {
- if _, err = deepMerge(dstElement, srcElement, visited, depth+1, config); err != nil {
+ if err = deepMerge(dstElement, srcElement, visited, depth+1, config); err != nil {
return
}
} else if srcKind == reflect.Map {
@@ -141,6 +141,9 @@ func MapWithOverwrite(dst, src interface{}, opts ...func(*Config)) error {
}
func _map(dst, src interface{}, opts ...func(*Config)) error {
+ if dst != nil && reflect.ValueOf(dst).Kind() != reflect.Ptr {
+ return ErrNonPointerAgument
+ }
var (
vDst, vSrc reflect.Value
err error
@@ -157,8 +160,7 @@ func _map(dst, src interface{}, opts ...func(*Config)) error {
// To be friction-less, we redirect equal-type arguments
// to deepMerge. Only because arguments can be anything.
if vSrc.Kind() == vDst.Kind() {
- _, err := deepMerge(vDst, vSrc, make(map[uintptr]*visit), 0, config)
- return err
+ return deepMerge(vDst, vSrc, make(map[uintptr]*visit), 0, config)
}
switch vSrc.Kind() {
case reflect.Struct:
diff --git a/vendor/github.com/imdario/mergo/merge.go b/vendor/github.com/imdario/mergo/merge.go
index 3332c9c..afa84a1 100644
--- a/vendor/github.com/imdario/mergo/merge.go
+++ b/vendor/github.com/imdario/mergo/merge.go
@@ -11,26 +11,26 @@ package mergo
import (
"fmt"
"reflect"
- "unsafe"
)
-func hasExportedField(dst reflect.Value) (exported bool) {
+func hasMergeableFields(dst reflect.Value) (exported bool) {
for i, n := 0, dst.NumField(); i < n; i++ {
field := dst.Type().Field(i)
- if isExportedComponent(&field) {
- return true
+ if field.Anonymous && dst.Field(i).Kind() == reflect.Struct {
+ exported = exported || hasMergeableFields(dst.Field(i))
+ } else if isExportedComponent(&field) {
+ exported = exported || len(field.PkgPath) == 0
}
}
return
}
func isExportedComponent(field *reflect.StructField) bool {
- name := field.Name
pkgPath := field.PkgPath
if len(pkgPath) > 0 {
return false
}
- c := name[0]
+ c := field.Name[0]
if 'a' <= c && c <= 'z' || c == '_' {
return false
}
@@ -44,6 +44,8 @@ type Config struct {
Transformers Transformers
overwriteWithEmptyValue bool
overwriteSliceWithEmptyValue bool
+ sliceDeepCopy bool
+ debug bool
}
type Transformers interface {
@@ -53,17 +55,16 @@ type Transformers interface {
// Traverses recursively both values, assigning src's fields values to dst.
// The map argument tracks comparisons that have already been seen, which allows
// short circuiting on recursive types.
-func deepMerge(dstIn, src reflect.Value, visited map[uintptr]*visit, depth int, config *Config) (dst reflect.Value, err error) {
- dst = dstIn
+func deepMerge(dst, src reflect.Value, visited map[uintptr]*visit, depth int, config *Config) (err error) {
overwrite := config.Overwrite
typeCheck := config.TypeCheck
overwriteWithEmptySrc := config.overwriteWithEmptyValue
overwriteSliceWithEmptySrc := config.overwriteSliceWithEmptyValue
+ sliceDeepCopy := config.sliceDeepCopy
if !src.IsValid() {
return
}
-
if dst.CanAddr() {
addr := dst.UnsafeAddr()
h := 17 * addr
@@ -71,7 +72,7 @@ func deepMerge(dstIn, src reflect.Value, visited map[uintptr]*visit, depth int,
typ := dst.Type()
for p := seen; p != nil; p = p.next {
if p.ptr == addr && p.typ == typ {
- return dst, nil
+ return nil
}
}
// Remember, remember...
@@ -85,126 +86,154 @@ func deepMerge(dstIn, src reflect.Value, visited map[uintptr]*visit, depth int,
}
}
- if dst.IsValid() && src.IsValid() && src.Type() != dst.Type() {
- err = fmt.Errorf("cannot append two different types (%s, %s)", src.Kind(), dst.Kind())
- return
- }
-
switch dst.Kind() {
case reflect.Struct:
- if hasExportedField(dst) {
- dstCp := reflect.New(dst.Type()).Elem()
+ if hasMergeableFields(dst) {
for i, n := 0, dst.NumField(); i < n; i++ {
- dstField := dst.Field(i)
- structField := dst.Type().Field(i)
- // copy un-exported struct fields
- if !isExportedComponent(&structField) {
- rf := dstCp.Field(i)
- rf = reflect.NewAt(rf.Type(), unsafe.Pointer(rf.UnsafeAddr())).Elem() //nolint:gosec
- dstRF := dst.Field(i)
- if !dst.Field(i).CanAddr() {
- continue
- }
-
- dstRF = reflect.NewAt(dstRF.Type(), unsafe.Pointer(dstRF.UnsafeAddr())).Elem() //nolint:gosec
- rf.Set(dstRF)
- continue
- }
- dstField, err = deepMerge(dstField, src.Field(i), visited, depth+1, config)
- if err != nil {
+ if err = deepMerge(dst.Field(i), src.Field(i), visited, depth+1, config); err != nil {
return
}
- dstCp.Field(i).Set(dstField)
}
-
- if dst.CanSet() {
- dst.Set(dstCp)
- } else {
- dst = dstCp
- }
- return
} else {
if (isReflectNil(dst) || overwrite) && (!isEmptyValue(src) || overwriteWithEmptySrc) {
- dst = src
+ dst.Set(src)
}
}
-
case reflect.Map:
if dst.IsNil() && !src.IsNil() {
- if dst.CanSet() {
- dst.Set(reflect.MakeMap(dst.Type()))
- } else {
- dst = src
- return
+ dst.Set(reflect.MakeMap(dst.Type()))
+ }
+
+ if src.Kind() != reflect.Map {
+ if overwrite {
+ dst.Set(src)
}
+ return
}
+
for _, key := range src.MapKeys() {
srcElement := src.MapIndex(key)
- dstElement := dst.MapIndex(key)
if !srcElement.IsValid() {
continue
}
- if dst.MapIndex(key).IsValid() {
- k := dstElement.Interface()
- dstElement = reflect.ValueOf(k)
- }
- if isReflectNil(srcElement) {
- if overwrite || isReflectNil(dstElement) {
- dst.SetMapIndex(key, srcElement)
+ dstElement := dst.MapIndex(key)
+ switch srcElement.Kind() {
+ case reflect.Chan, reflect.Func, reflect.Map, reflect.Interface, reflect.Slice:
+ if srcElement.IsNil() {
+ if overwrite {
+ dst.SetMapIndex(key, srcElement)
+ }
+ continue
+ }
+ fallthrough
+ default:
+ if !srcElement.CanInterface() {
+ continue
+ }
+ switch reflect.TypeOf(srcElement.Interface()).Kind() {
+ case reflect.Struct:
+ fallthrough
+ case reflect.Ptr:
+ fallthrough
+ case reflect.Map:
+ srcMapElm := srcElement
+ dstMapElm := dstElement
+ if srcMapElm.CanInterface() {
+ srcMapElm = reflect.ValueOf(srcMapElm.Interface())
+ if dstMapElm.IsValid() {
+ dstMapElm = reflect.ValueOf(dstMapElm.Interface())
+ }
+ }
+ if err = deepMerge(dstMapElm, srcMapElm, visited, depth+1, config); err != nil {
+ return
+ }
+ case reflect.Slice:
+ srcSlice := reflect.ValueOf(srcElement.Interface())
+
+ var dstSlice reflect.Value
+ if !dstElement.IsValid() || dstElement.IsNil() {
+ dstSlice = reflect.MakeSlice(srcSlice.Type(), 0, srcSlice.Len())
+ } else {
+ dstSlice = reflect.ValueOf(dstElement.Interface())
+ }
+
+ if (!isEmptyValue(src) || overwriteWithEmptySrc || overwriteSliceWithEmptySrc) && (overwrite || isEmptyValue(dst)) && !config.AppendSlice && !sliceDeepCopy {
+ if typeCheck && srcSlice.Type() != dstSlice.Type() {
+ return fmt.Errorf("cannot override two slices with different type (%s, %s)", srcSlice.Type(), dstSlice.Type())
+ }
+ dstSlice = srcSlice
+ } else if config.AppendSlice {
+ if srcSlice.Type() != dstSlice.Type() {
+ return fmt.Errorf("cannot append two slices with different type (%s, %s)", srcSlice.Type(), dstSlice.Type())
+ }
+ dstSlice = reflect.AppendSlice(dstSlice, srcSlice)
+ } else if sliceDeepCopy {
+ i := 0
+ for ; i < srcSlice.Len() && i < dstSlice.Len(); i++ {
+ srcElement := srcSlice.Index(i)
+ dstElement := dstSlice.Index(i)
+
+ if srcElement.CanInterface() {
+ srcElement = reflect.ValueOf(srcElement.Interface())
+ }
+ if dstElement.CanInterface() {
+ dstElement = reflect.ValueOf(dstElement.Interface())
+ }
+
+ if err = deepMerge(dstElement, srcElement, visited, depth+1, config); err != nil {
+ return
+ }
+ }
+
+ }
+ dst.SetMapIndex(key, dstSlice)
}
- continue
}
- if !srcElement.CanInterface() {
+ if dstElement.IsValid() && !isEmptyValue(dstElement) && (reflect.TypeOf(srcElement.Interface()).Kind() == reflect.Map || reflect.TypeOf(srcElement.Interface()).Kind() == reflect.Slice) {
continue
}
- if srcElement.CanInterface() {
- srcElement = reflect.ValueOf(srcElement.Interface())
- if dstElement.IsValid() {
- dstElement = reflect.ValueOf(dstElement.Interface())
+ if srcElement.IsValid() && ((srcElement.Kind() != reflect.Ptr && overwrite) || !dstElement.IsValid() || isEmptyValue(dstElement)) {
+ if dst.IsNil() {
+ dst.Set(reflect.MakeMap(dst.Type()))
}
+ dst.SetMapIndex(key, srcElement)
}
- dstElement, err = deepMerge(dstElement, srcElement, visited, depth+1, config)
- if err != nil {
- return
- }
- dst.SetMapIndex(key, dstElement)
-
}
case reflect.Slice:
- newSlice := dst
- if (!isEmptyValue(src) || overwriteWithEmptySrc || overwriteSliceWithEmptySrc) && (overwrite || isEmptyValue(dst)) && !config.AppendSlice {
- if typeCheck && src.Type() != dst.Type() {
- return dst, fmt.Errorf("cannot override two slices with different type (%s, %s)", src.Type(), dst.Type())
- }
- newSlice = src
- } else if config.AppendSlice {
- if typeCheck && src.Type() != dst.Type() {
- err = fmt.Errorf("cannot append two slice with different type (%s, %s)", src.Type(), dst.Type())
- return
- }
- newSlice = reflect.AppendSlice(dst, src)
- }
- if dst.CanSet() {
- dst.Set(newSlice)
- } else {
- dst = newSlice
- }
- case reflect.Ptr, reflect.Interface:
- if isReflectNil(src) {
+ if !dst.CanSet() {
break
}
+ if (!isEmptyValue(src) || overwriteWithEmptySrc || overwriteSliceWithEmptySrc) && (overwrite || isEmptyValue(dst)) && !config.AppendSlice && !sliceDeepCopy {
+ dst.Set(src)
+ } else if config.AppendSlice {
+ if src.Type() != dst.Type() {
+ return fmt.Errorf("cannot append two slice with different type (%s, %s)", src.Type(), dst.Type())
+ }
+ dst.Set(reflect.AppendSlice(dst, src))
+ } else if sliceDeepCopy {
+ for i := 0; i < src.Len() && i < dst.Len(); i++ {
+ srcElement := src.Index(i)
+ dstElement := dst.Index(i)
+ if srcElement.CanInterface() {
+ srcElement = reflect.ValueOf(srcElement.Interface())
+ }
+ if dstElement.CanInterface() {
+ dstElement = reflect.ValueOf(dstElement.Interface())
+ }
- if dst.Kind() != reflect.Ptr && src.Type().AssignableTo(dst.Type()) {
- if dst.IsNil() || overwrite {
- if overwrite || isEmptyValue(dst) {
- if dst.CanSet() {
- dst.Set(src)
- } else {
- dst = src
- }
+ if err = deepMerge(dstElement, srcElement, visited, depth+1, config); err != nil {
+ return
}
}
+ }
+ case reflect.Ptr:
+ fallthrough
+ case reflect.Interface:
+ if isReflectNil(src) {
+ if overwriteWithEmptySrc && dst.CanSet() && src.Type().AssignableTo(dst.Type()) {
+ dst.Set(src)
+ }
break
}
@@ -214,33 +243,35 @@ func deepMerge(dstIn, src reflect.Value, visited map[uintptr]*visit, depth int,
dst.Set(src)
}
} else if src.Kind() == reflect.Ptr {
- if dst, err = deepMerge(dst.Elem(), src.Elem(), visited, depth+1, config); err != nil {
+ if err = deepMerge(dst.Elem(), src.Elem(), visited, depth+1, config); err != nil {
return
}
- dst = dst.Addr()
} else if dst.Elem().Type() == src.Type() {
- if dst, err = deepMerge(dst.Elem(), src, visited, depth+1, config); err != nil {
+ if err = deepMerge(dst.Elem(), src, visited, depth+1, config); err != nil {
return
}
} else {
- return dst, ErrDifferentArgumentsTypes
+ return ErrDifferentArgumentsTypes
}
break
}
+
if dst.IsNil() || overwrite {
- if (overwrite || isEmptyValue(dst)) && (overwriteWithEmptySrc || !isEmptyValue(src)) {
- if dst.CanSet() {
- dst.Set(src)
- } else {
- dst = src
- }
+ if dst.CanSet() && (overwrite || isEmptyValue(dst)) {
+ dst.Set(src)
}
- } else if _, err = deepMerge(dst.Elem(), src.Elem(), visited, depth+1, config); err != nil {
- return
+ break
+ }
+
+ if dst.Elem().Kind() == src.Elem().Kind() {
+ if err = deepMerge(dst.Elem(), src.Elem(), visited, depth+1, config); err != nil {
+ return
+ }
+ break
}
default:
- overwriteFull := (!isEmptyValue(src) || overwriteWithEmptySrc) && (overwrite || isEmptyValue(dst))
- if overwriteFull {
+ mustSet := (isEmptyValue(dst) || overwrite) && (!isEmptyValue(src) || overwriteWithEmptySrc)
+ if mustSet {
if dst.CanSet() {
dst.Set(src)
} else {
@@ -281,6 +312,7 @@ func WithOverride(config *Config) {
// WithOverwriteWithEmptyValue will make merge override non empty dst attributes with empty src attributes values.
func WithOverwriteWithEmptyValue(config *Config) {
+ config.Overwrite = true
config.overwriteWithEmptyValue = true
}
@@ -299,7 +331,16 @@ func WithTypeCheck(config *Config) {
config.TypeCheck = true
}
+// WithSliceDeepCopy will merge slice element one by one with Overwrite flag.
+func WithSliceDeepCopy(config *Config) {
+ config.sliceDeepCopy = true
+ config.Overwrite = true
+}
+
func merge(dst, src interface{}, opts ...func(*Config)) error {
+ if dst != nil && reflect.ValueOf(dst).Kind() != reflect.Ptr {
+ return ErrNonPointerAgument
+ }
var (
vDst, vSrc reflect.Value
err error
@@ -314,14 +355,10 @@ func merge(dst, src interface{}, opts ...func(*Config)) error {
if vDst, vSrc, err = resolveValues(dst, src); err != nil {
return err
}
- if !vDst.CanSet() {
- return fmt.Errorf("cannot set dst, needs reference")
- }
if vDst.Type() != vSrc.Type() {
return ErrDifferentArgumentsTypes
}
- _, err = deepMerge(vDst, vSrc, make(map[uintptr]*visit), 0, config)
- return err
+ return deepMerge(vDst, vSrc, make(map[uintptr]*visit), 0, config)
}
// IsReflectNil is the reflect value provided nil
diff --git a/vendor/github.com/imdario/mergo/mergo.go b/vendor/github.com/imdario/mergo/mergo.go
index a82fea2..3cc926c 100644
--- a/vendor/github.com/imdario/mergo/mergo.go
+++ b/vendor/github.com/imdario/mergo/mergo.go
@@ -20,6 +20,7 @@ var (
ErrNotSupported = errors.New("only structs and maps are supported")
ErrExpectedMapAsDestination = errors.New("dst was expected to be a map")
ErrExpectedStructAsDestination = errors.New("dst was expected to be a struct")
+ ErrNonPointerAgument = errors.New("dst must be a pointer")
)
// During deepMerge, must keep track of checks that are
@@ -75,23 +76,3 @@ func resolveValues(dst, src interface{}) (vDst, vSrc reflect.Value, err error) {
}
return
}
-
-// Traverses recursively both values, assigning src's fields values to dst.
-// The map argument tracks comparisons that have already been seen, which allows
-// short circuiting on recursive types.
-func deeper(dst, src reflect.Value, visited map[uintptr]*visit, depth int) (err error) {
- if dst.CanAddr() {
- addr := dst.UnsafeAddr()
- h := 17 * addr
- seen := visited[h]
- typ := dst.Type()
- for p := seen; p != nil; p = p.next {
- if p.ptr == addr && p.typ == typ {
- return nil
- }
- }
- // Remember, remember...
- visited[h] = &visit{addr, typ, seen}
- }
- return // TODO refactor
-}
diff --git a/vendor/github.com/shopspring/decimal/.gitignore b/vendor/github.com/shopspring/decimal/.gitignore
new file mode 100644
index 0000000..8a43ce9
--- /dev/null
+++ b/vendor/github.com/shopspring/decimal/.gitignore
@@ -0,0 +1,6 @@
+.git
+*.swp
+
+# IntelliJ
+.idea/
+*.iml
diff --git a/vendor/github.com/shopspring/decimal/.travis.yml b/vendor/github.com/shopspring/decimal/.travis.yml
new file mode 100644
index 0000000..55d42b2
--- /dev/null
+++ b/vendor/github.com/shopspring/decimal/.travis.yml
@@ -0,0 +1,13 @@
+language: go
+
+go:
+ - 1.7.x
+ - 1.12.x
+ - 1.13.x
+ - tip
+
+install:
+ - go build .
+
+script:
+ - go test -v
diff --git a/vendor/github.com/shopspring/decimal/CHANGELOG.md b/vendor/github.com/shopspring/decimal/CHANGELOG.md
new file mode 100644
index 0000000..01ba02f
--- /dev/null
+++ b/vendor/github.com/shopspring/decimal/CHANGELOG.md
@@ -0,0 +1,19 @@
+## Decimal v1.2.0
+
+#### BREAKING
+- Drop support for Go version older than 1.7 [#172](https://github.com/shopspring/decimal/pull/172)
+
+#### FEATURES
+- Add NewFromInt and NewFromInt32 initializers [#72](https://github.com/shopspring/decimal/pull/72)
+- Add support for Go modules [#157](https://github.com/shopspring/decimal/pull/157)
+- Add BigInt, BigFloat helper methods [#171](https://github.com/shopspring/decimal/pull/171)
+
+#### ENHANCEMENTS
+- Memory usage optimization [#160](https://github.com/shopspring/decimal/pull/160)
+- Updated travis CI golang versions [#156](https://github.com/shopspring/decimal/pull/156)
+- Update documentation [#173](https://github.com/shopspring/decimal/pull/173)
+- Improve code quality [#174](https://github.com/shopspring/decimal/pull/174)
+
+#### BUGFIXES
+- Revert remove insignificant digits [#159](https://github.com/shopspring/decimal/pull/159)
+- Remove 15 interval for RoundCash [#166](https://github.com/shopspring/decimal/pull/166)
diff --git a/vendor/github.com/shopspring/decimal/LICENSE b/vendor/github.com/shopspring/decimal/LICENSE
new file mode 100644
index 0000000..ad2148a
--- /dev/null
+++ b/vendor/github.com/shopspring/decimal/LICENSE
@@ -0,0 +1,45 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Spring, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+- Based on https://github.com/oguzbilgic/fpd, which has the following license:
+"""
+The MIT License (MIT)
+
+Copyright (c) 2013 Oguz Bilgic
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+"""
diff --git a/vendor/github.com/shopspring/decimal/README.md b/vendor/github.com/shopspring/decimal/README.md
new file mode 100644
index 0000000..b70f901
--- /dev/null
+++ b/vendor/github.com/shopspring/decimal/README.md
@@ -0,0 +1,130 @@
+# decimal
+
+[](https://travis-ci.org/shopspring/decimal) [](https://godoc.org/github.com/shopspring/decimal) [](https://goreportcard.com/report/github.com/shopspring/decimal)
+
+Arbitrary-precision fixed-point decimal numbers in go.
+
+_Note:_ Decimal library can "only" represent numbers with a maximum of 2^31 digits after the decimal point.
+
+## Features
+
+ * The zero-value is 0, and is safe to use without initialization
+ * Addition, subtraction, multiplication with no loss of precision
+ * Division with specified precision
+ * Database/sql serialization/deserialization
+ * JSON and XML serialization/deserialization
+
+## Install
+
+Run `go get github.com/shopspring/decimal`
+
+## Requirements
+
+Decimal library requires Go version `>=1.7`
+
+## Usage
+
+```go
+package main
+
+import (
+ "fmt"
+ "github.com/shopspring/decimal"
+)
+
+func main() {
+ price, err := decimal.NewFromString("136.02")
+ if err != nil {
+ panic(err)
+ }
+
+ quantity := decimal.NewFromInt(3)
+
+ fee, _ := decimal.NewFromString(".035")
+ taxRate, _ := decimal.NewFromString(".08875")
+
+ subtotal := price.Mul(quantity)
+
+ preTax := subtotal.Mul(fee.Add(decimal.NewFromFloat(1)))
+
+ total := preTax.Mul(taxRate.Add(decimal.NewFromFloat(1)))
+
+ fmt.Println("Subtotal:", subtotal) // Subtotal: 408.06
+ fmt.Println("Pre-tax:", preTax) // Pre-tax: 422.3421
+ fmt.Println("Taxes:", total.Sub(preTax)) // Taxes: 37.482861375
+ fmt.Println("Total:", total) // Total: 459.824961375
+ fmt.Println("Tax rate:", total.Sub(preTax).Div(preTax)) // Tax rate: 0.08875
+}
+```
+
+## Documentation
+
+http://godoc.org/github.com/shopspring/decimal
+
+## Production Usage
+
+* [Spring](https://shopspring.com/), since August 14, 2014.
+* If you are using this in production, please let us know!
+
+## FAQ
+
+#### Why don't you just use float64?
+
+Because float64 (or any binary floating point type, actually) can't represent
+numbers such as `0.1` exactly.
+
+Consider this code: http://play.golang.org/p/TQBd4yJe6B You might expect that
+it prints out `10`, but it actually prints `9.999999999999831`. Over time,
+these small errors can really add up!
+
+#### Why don't you just use big.Rat?
+
+big.Rat is fine for representing rational numbers, but Decimal is better for
+representing money. Why? Here's a (contrived) example:
+
+Let's say you use big.Rat, and you have two numbers, x and y, both
+representing 1/3, and you have `z = 1 - x - y = 1/3`. If you print each one
+out, the string output has to stop somewhere (let's say it stops at 3 decimal
+digits, for simplicity), so you'll get 0.333, 0.333, and 0.333. But where did
+the other 0.001 go?
+
+Here's the above example as code: http://play.golang.org/p/lCZZs0w9KE
+
+With Decimal, the strings being printed out represent the number exactly. So,
+if you have `x = y = 1/3` (with precision 3), they will actually be equal to
+0.333, and when you do `z = 1 - x - y`, `z` will be equal to .334. No money is
+unaccounted for!
+
+You still have to be careful. If you want to split a number `N` 3 ways, you
+can't just send `N/3` to three different people. You have to pick one to send
+`N - (2/3*N)` to. That person will receive the fraction of a penny remainder.
+
+But, it is much easier to be careful with Decimal than with big.Rat.
+
+#### Why isn't the API similar to big.Int's?
+
+big.Int's API is built to reduce the number of memory allocations for maximal
+performance. This makes sense for its use-case, but the trade-off is that the
+API is awkward and easy to misuse.
+
+For example, to add two big.Ints, you do: `z := new(big.Int).Add(x, y)`. A
+developer unfamiliar with this API might try to do `z := a.Add(a, b)`. This
+modifies `a` and sets `z` as an alias for `a`, which they might not expect. It
+also modifies any other aliases to `a`.
+
+Here's an example of the subtle bugs you can introduce with big.Int's API:
+https://play.golang.org/p/x2R_78pa8r
+
+In contrast, it's difficult to make such mistakes with decimal. Decimals
+behave like other go numbers types: even though `a = b` will not deep copy
+`b` into `a`, it is impossible to modify a Decimal, since all Decimal methods
+return new Decimals and do not modify the originals. The downside is that
+this causes extra allocations, so Decimal is less performant. My assumption
+is that if you're using Decimals, you probably care more about correctness
+than performance.
+
+## License
+
+The MIT License (MIT)
+
+This is a heavily modified fork of [fpd.Decimal](https://github.com/oguzbilgic/fpd), which was also released under the MIT License.
diff --git a/vendor/github.com/shopspring/decimal/decimal-go.go b/vendor/github.com/shopspring/decimal/decimal-go.go
new file mode 100644
index 0000000..9958d69
--- /dev/null
+++ b/vendor/github.com/shopspring/decimal/decimal-go.go
@@ -0,0 +1,415 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Multiprecision decimal numbers.
+// For floating-point formatting only; not general purpose.
+// Only operations are assign and (binary) left/right shift.
+// Can do binary floating point in multiprecision decimal precisely
+// because 2 divides 10; cannot do decimal floating point
+// in multiprecision binary precisely.
+
+package decimal
+
+type decimal struct {
+ d [800]byte // digits, big-endian representation
+ nd int // number of digits used
+ dp int // decimal point
+ neg bool // negative flag
+ trunc bool // discarded nonzero digits beyond d[:nd]
+}
+
+func (a *decimal) String() string {
+ n := 10 + a.nd
+ if a.dp > 0 {
+ n += a.dp
+ }
+ if a.dp < 0 {
+ n += -a.dp
+ }
+
+ buf := make([]byte, n)
+ w := 0
+ switch {
+ case a.nd == 0:
+ return "0"
+
+ case a.dp <= 0:
+ // zeros fill space between decimal point and digits
+ buf[w] = '0'
+ w++
+ buf[w] = '.'
+ w++
+ w += digitZero(buf[w : w+-a.dp])
+ w += copy(buf[w:], a.d[0:a.nd])
+
+ case a.dp < a.nd:
+ // decimal point in middle of digits
+ w += copy(buf[w:], a.d[0:a.dp])
+ buf[w] = '.'
+ w++
+ w += copy(buf[w:], a.d[a.dp:a.nd])
+
+ default:
+ // zeros fill space between digits and decimal point
+ w += copy(buf[w:], a.d[0:a.nd])
+ w += digitZero(buf[w : w+a.dp-a.nd])
+ }
+ return string(buf[0:w])
+}
+
+func digitZero(dst []byte) int {
+ for i := range dst {
+ dst[i] = '0'
+ }
+ return len(dst)
+}
+
+// trim trailing zeros from number.
+// (They are meaningless; the decimal point is tracked
+// independent of the number of digits.)
+func trim(a *decimal) {
+ for a.nd > 0 && a.d[a.nd-1] == '0' {
+ a.nd--
+ }
+ if a.nd == 0 {
+ a.dp = 0
+ }
+}
+
+// Assign v to a.
+func (a *decimal) Assign(v uint64) {
+ var buf [24]byte
+
+ // Write reversed decimal in buf.
+ n := 0
+ for v > 0 {
+ v1 := v / 10
+ v -= 10 * v1
+ buf[n] = byte(v + '0')
+ n++
+ v = v1
+ }
+
+ // Reverse again to produce forward decimal in a.d.
+ a.nd = 0
+ for n--; n >= 0; n-- {
+ a.d[a.nd] = buf[n]
+ a.nd++
+ }
+ a.dp = a.nd
+ trim(a)
+}
+
+// Maximum shift that we can do in one pass without overflow.
+// A uint has 32 or 64 bits, and we have to be able to accommodate 9<> 63)
+const maxShift = uintSize - 4
+
+// Binary shift right (/ 2) by k bits. k <= maxShift to avoid overflow.
+func rightShift(a *decimal, k uint) {
+ r := 0 // read pointer
+ w := 0 // write pointer
+
+ // Pick up enough leading digits to cover first shift.
+ var n uint
+ for ; n>>k == 0; r++ {
+ if r >= a.nd {
+ if n == 0 {
+ // a == 0; shouldn't get here, but handle anyway.
+ a.nd = 0
+ return
+ }
+ for n>>k == 0 {
+ n = n * 10
+ r++
+ }
+ break
+ }
+ c := uint(a.d[r])
+ n = n*10 + c - '0'
+ }
+ a.dp -= r - 1
+
+ var mask uint = (1 << k) - 1
+
+ // Pick up a digit, put down a digit.
+ for ; r < a.nd; r++ {
+ c := uint(a.d[r])
+ dig := n >> k
+ n &= mask
+ a.d[w] = byte(dig + '0')
+ w++
+ n = n*10 + c - '0'
+ }
+
+ // Put down extra digits.
+ for n > 0 {
+ dig := n >> k
+ n &= mask
+ if w < len(a.d) {
+ a.d[w] = byte(dig + '0')
+ w++
+ } else if dig > 0 {
+ a.trunc = true
+ }
+ n = n * 10
+ }
+
+ a.nd = w
+ trim(a)
+}
+
+// Cheat sheet for left shift: table indexed by shift count giving
+// number of new digits that will be introduced by that shift.
+//
+// For example, leftcheats[4] = {2, "625"}. That means that
+// if we are shifting by 4 (multiplying by 16), it will add 2 digits
+// when the string prefix is "625" through "999", and one fewer digit
+// if the string prefix is "000" through "624".
+//
+// Credit for this trick goes to Ken.
+
+type leftCheat struct {
+ delta int // number of new digits
+ cutoff string // minus one digit if original < a.
+}
+
+var leftcheats = []leftCheat{
+ // Leading digits of 1/2^i = 5^i.
+ // 5^23 is not an exact 64-bit floating point number,
+ // so have to use bc for the math.
+ // Go up to 60 to be large enough for 32bit and 64bit platforms.
+ /*
+ seq 60 | sed 's/^/5^/' | bc |
+ awk 'BEGIN{ print "\t{ 0, \"\" }," }
+ {
+ log2 = log(2)/log(10)
+ printf("\t{ %d, \"%s\" },\t// * %d\n",
+ int(log2*NR+1), $0, 2**NR)
+ }'
+ */
+ {0, ""},
+ {1, "5"}, // * 2
+ {1, "25"}, // * 4
+ {1, "125"}, // * 8
+ {2, "625"}, // * 16
+ {2, "3125"}, // * 32
+ {2, "15625"}, // * 64
+ {3, "78125"}, // * 128
+ {3, "390625"}, // * 256
+ {3, "1953125"}, // * 512
+ {4, "9765625"}, // * 1024
+ {4, "48828125"}, // * 2048
+ {4, "244140625"}, // * 4096
+ {4, "1220703125"}, // * 8192
+ {5, "6103515625"}, // * 16384
+ {5, "30517578125"}, // * 32768
+ {5, "152587890625"}, // * 65536
+ {6, "762939453125"}, // * 131072
+ {6, "3814697265625"}, // * 262144
+ {6, "19073486328125"}, // * 524288
+ {7, "95367431640625"}, // * 1048576
+ {7, "476837158203125"}, // * 2097152
+ {7, "2384185791015625"}, // * 4194304
+ {7, "11920928955078125"}, // * 8388608
+ {8, "59604644775390625"}, // * 16777216
+ {8, "298023223876953125"}, // * 33554432
+ {8, "1490116119384765625"}, // * 67108864
+ {9, "7450580596923828125"}, // * 134217728
+ {9, "37252902984619140625"}, // * 268435456
+ {9, "186264514923095703125"}, // * 536870912
+ {10, "931322574615478515625"}, // * 1073741824
+ {10, "4656612873077392578125"}, // * 2147483648
+ {10, "23283064365386962890625"}, // * 4294967296
+ {10, "116415321826934814453125"}, // * 8589934592
+ {11, "582076609134674072265625"}, // * 17179869184
+ {11, "2910383045673370361328125"}, // * 34359738368
+ {11, "14551915228366851806640625"}, // * 68719476736
+ {12, "72759576141834259033203125"}, // * 137438953472
+ {12, "363797880709171295166015625"}, // * 274877906944
+ {12, "1818989403545856475830078125"}, // * 549755813888
+ {13, "9094947017729282379150390625"}, // * 1099511627776
+ {13, "45474735088646411895751953125"}, // * 2199023255552
+ {13, "227373675443232059478759765625"}, // * 4398046511104
+ {13, "1136868377216160297393798828125"}, // * 8796093022208
+ {14, "5684341886080801486968994140625"}, // * 17592186044416
+ {14, "28421709430404007434844970703125"}, // * 35184372088832
+ {14, "142108547152020037174224853515625"}, // * 70368744177664
+ {15, "710542735760100185871124267578125"}, // * 140737488355328
+ {15, "3552713678800500929355621337890625"}, // * 281474976710656
+ {15, "17763568394002504646778106689453125"}, // * 562949953421312
+ {16, "88817841970012523233890533447265625"}, // * 1125899906842624
+ {16, "444089209850062616169452667236328125"}, // * 2251799813685248
+ {16, "2220446049250313080847263336181640625"}, // * 4503599627370496
+ {16, "11102230246251565404236316680908203125"}, // * 9007199254740992
+ {17, "55511151231257827021181583404541015625"}, // * 18014398509481984
+ {17, "277555756156289135105907917022705078125"}, // * 36028797018963968
+ {17, "1387778780781445675529539585113525390625"}, // * 72057594037927936
+ {18, "6938893903907228377647697925567626953125"}, // * 144115188075855872
+ {18, "34694469519536141888238489627838134765625"}, // * 288230376151711744
+ {18, "173472347597680709441192448139190673828125"}, // * 576460752303423488
+ {19, "867361737988403547205962240695953369140625"}, // * 1152921504606846976
+}
+
+// Is the leading prefix of b lexicographically less than s?
+func prefixIsLessThan(b []byte, s string) bool {
+ for i := 0; i < len(s); i++ {
+ if i >= len(b) {
+ return true
+ }
+ if b[i] != s[i] {
+ return b[i] < s[i]
+ }
+ }
+ return false
+}
+
+// Binary shift left (* 2) by k bits. k <= maxShift to avoid overflow.
+func leftShift(a *decimal, k uint) {
+ delta := leftcheats[k].delta
+ if prefixIsLessThan(a.d[0:a.nd], leftcheats[k].cutoff) {
+ delta--
+ }
+
+ r := a.nd // read index
+ w := a.nd + delta // write index
+
+ // Pick up a digit, put down a digit.
+ var n uint
+ for r--; r >= 0; r-- {
+ n += (uint(a.d[r]) - '0') << k
+ quo := n / 10
+ rem := n - 10*quo
+ w--
+ if w < len(a.d) {
+ a.d[w] = byte(rem + '0')
+ } else if rem != 0 {
+ a.trunc = true
+ }
+ n = quo
+ }
+
+ // Put down extra digits.
+ for n > 0 {
+ quo := n / 10
+ rem := n - 10*quo
+ w--
+ if w < len(a.d) {
+ a.d[w] = byte(rem + '0')
+ } else if rem != 0 {
+ a.trunc = true
+ }
+ n = quo
+ }
+
+ a.nd += delta
+ if a.nd >= len(a.d) {
+ a.nd = len(a.d)
+ }
+ a.dp += delta
+ trim(a)
+}
+
+// Binary shift left (k > 0) or right (k < 0).
+func (a *decimal) Shift(k int) {
+ switch {
+ case a.nd == 0:
+ // nothing to do: a == 0
+ case k > 0:
+ for k > maxShift {
+ leftShift(a, maxShift)
+ k -= maxShift
+ }
+ leftShift(a, uint(k))
+ case k < 0:
+ for k < -maxShift {
+ rightShift(a, maxShift)
+ k += maxShift
+ }
+ rightShift(a, uint(-k))
+ }
+}
+
+// If we chop a at nd digits, should we round up?
+func shouldRoundUp(a *decimal, nd int) bool {
+ if nd < 0 || nd >= a.nd {
+ return false
+ }
+ if a.d[nd] == '5' && nd+1 == a.nd { // exactly halfway - round to even
+ // if we truncated, a little higher than what's recorded - always round up
+ if a.trunc {
+ return true
+ }
+ return nd > 0 && (a.d[nd-1]-'0')%2 != 0
+ }
+ // not halfway - digit tells all
+ return a.d[nd] >= '5'
+}
+
+// Round a to nd digits (or fewer).
+// If nd is zero, it means we're rounding
+// just to the left of the digits, as in
+// 0.09 -> 0.1.
+func (a *decimal) Round(nd int) {
+ if nd < 0 || nd >= a.nd {
+ return
+ }
+ if shouldRoundUp(a, nd) {
+ a.RoundUp(nd)
+ } else {
+ a.RoundDown(nd)
+ }
+}
+
+// Round a down to nd digits (or fewer).
+func (a *decimal) RoundDown(nd int) {
+ if nd < 0 || nd >= a.nd {
+ return
+ }
+ a.nd = nd
+ trim(a)
+}
+
+// Round a up to nd digits (or fewer).
+func (a *decimal) RoundUp(nd int) {
+ if nd < 0 || nd >= a.nd {
+ return
+ }
+
+ // round up
+ for i := nd - 1; i >= 0; i-- {
+ c := a.d[i]
+ if c < '9' { // can stop after this digit
+ a.d[i]++
+ a.nd = i + 1
+ return
+ }
+ }
+
+ // Number is all 9s.
+ // Change to single 1 with adjusted decimal point.
+ a.d[0] = '1'
+ a.nd = 1
+ a.dp++
+}
+
+// Extract integer part, rounded appropriately.
+// No guarantees about overflow.
+func (a *decimal) RoundedInteger() uint64 {
+ if a.dp > 20 {
+ return 0xFFFFFFFFFFFFFFFF
+ }
+ var i int
+ n := uint64(0)
+ for i = 0; i < a.dp && i < a.nd; i++ {
+ n = n*10 + uint64(a.d[i]-'0')
+ }
+ for ; i < a.dp; i++ {
+ n *= 10
+ }
+ if shouldRoundUp(a, a.dp) {
+ n++
+ }
+ return n
+}
diff --git a/vendor/github.com/shopspring/decimal/decimal.go b/vendor/github.com/shopspring/decimal/decimal.go
new file mode 100644
index 0000000..801c1a0
--- /dev/null
+++ b/vendor/github.com/shopspring/decimal/decimal.go
@@ -0,0 +1,1477 @@
+// Package decimal implements an arbitrary precision fixed-point decimal.
+//
+// The zero-value of a Decimal is 0, as you would expect.
+//
+// The best way to create a new Decimal is to use decimal.NewFromString, ex:
+//
+// n, err := decimal.NewFromString("-123.4567")
+// n.String() // output: "-123.4567"
+//
+// To use Decimal as part of a struct:
+//
+// type Struct struct {
+// Number Decimal
+// }
+//
+// Note: This can "only" represent numbers with a maximum of 2^31 digits after the decimal point.
+package decimal
+
+import (
+ "database/sql/driver"
+ "encoding/binary"
+ "fmt"
+ "math"
+ "math/big"
+ "strconv"
+ "strings"
+)
+
+// DivisionPrecision is the number of decimal places in the result when it
+// doesn't divide exactly.
+//
+// Example:
+//
+// d1 := decimal.NewFromFloat(2).Div(decimal.NewFromFloat(3))
+// d1.String() // output: "0.6666666666666667"
+// d2 := decimal.NewFromFloat(2).Div(decimal.NewFromFloat(30000))
+// d2.String() // output: "0.0000666666666667"
+// d3 := decimal.NewFromFloat(20000).Div(decimal.NewFromFloat(3))
+// d3.String() // output: "6666.6666666666666667"
+// decimal.DivisionPrecision = 3
+// d4 := decimal.NewFromFloat(2).Div(decimal.NewFromFloat(3))
+// d4.String() // output: "0.667"
+//
+var DivisionPrecision = 16
+
+// MarshalJSONWithoutQuotes should be set to true if you want the decimal to
+// be JSON marshaled as a number, instead of as a string.
+// WARNING: this is dangerous for decimals with many digits, since many JSON
+// unmarshallers (ex: Javascript's) will unmarshal JSON numbers to IEEE 754
+// double-precision floating point numbers, which means you can potentially
+// silently lose precision.
+var MarshalJSONWithoutQuotes = false
+
+// Zero constant, to make computations faster.
+// Zero should never be compared with == or != directly, please use decimal.Equal or decimal.Cmp instead.
+var Zero = New(0, 1)
+
+var zeroInt = big.NewInt(0)
+var oneInt = big.NewInt(1)
+var twoInt = big.NewInt(2)
+var fourInt = big.NewInt(4)
+var fiveInt = big.NewInt(5)
+var tenInt = big.NewInt(10)
+var twentyInt = big.NewInt(20)
+
+// Decimal represents a fixed-point decimal. It is immutable.
+// number = value * 10 ^ exp
+type Decimal struct {
+ value *big.Int
+
+ // NOTE(vadim): this must be an int32, because we cast it to float64 during
+ // calculations. If exp is 64 bit, we might lose precision.
+ // If we cared about being able to represent every possible decimal, we
+ // could make exp a *big.Int but it would hurt performance and numbers
+ // like that are unrealistic.
+ exp int32
+}
+
+// New returns a new fixed-point decimal, value * 10 ^ exp.
+func New(value int64, exp int32) Decimal {
+ return Decimal{
+ value: big.NewInt(value),
+ exp: exp,
+ }
+}
+
+// NewFromInt converts a int64 to Decimal.
+//
+// Example:
+//
+// NewFromInt(123).String() // output: "123"
+// NewFromInt(-10).String() // output: "-10"
+func NewFromInt(value int64) Decimal {
+ return Decimal{
+ value: big.NewInt(value),
+ exp: 0,
+ }
+}
+
+// NewFromInt32 converts a int32 to Decimal.
+//
+// Example:
+//
+// NewFromInt(123).String() // output: "123"
+// NewFromInt(-10).String() // output: "-10"
+func NewFromInt32(value int32) Decimal {
+ return Decimal{
+ value: big.NewInt(int64(value)),
+ exp: 0,
+ }
+}
+
+// NewFromBigInt returns a new Decimal from a big.Int, value * 10 ^ exp
+func NewFromBigInt(value *big.Int, exp int32) Decimal {
+ return Decimal{
+ value: big.NewInt(0).Set(value),
+ exp: exp,
+ }
+}
+
+// NewFromString returns a new Decimal from a string representation.
+// Trailing zeroes are not trimmed.
+//
+// Example:
+//
+// d, err := NewFromString("-123.45")
+// d2, err := NewFromString(".0001")
+// d3, err := NewFromString("1.47000")
+//
+func NewFromString(value string) (Decimal, error) {
+ originalInput := value
+ var intString string
+ var exp int64
+
+ // Check if number is using scientific notation
+ eIndex := strings.IndexAny(value, "Ee")
+ if eIndex != -1 {
+ expInt, err := strconv.ParseInt(value[eIndex+1:], 10, 32)
+ if err != nil {
+ if e, ok := err.(*strconv.NumError); ok && e.Err == strconv.ErrRange {
+ return Decimal{}, fmt.Errorf("can't convert %s to decimal: fractional part too long", value)
+ }
+ return Decimal{}, fmt.Errorf("can't convert %s to decimal: exponent is not numeric", value)
+ }
+ value = value[:eIndex]
+ exp = expInt
+ }
+
+ parts := strings.Split(value, ".")
+ if len(parts) == 1 {
+ // There is no decimal point, we can just parse the original string as
+ // an int
+ intString = value
+ } else if len(parts) == 2 {
+ intString = parts[0] + parts[1]
+ expInt := -len(parts[1])
+ exp += int64(expInt)
+ } else {
+ return Decimal{}, fmt.Errorf("can't convert %s to decimal: too many .s", value)
+ }
+
+ dValue := new(big.Int)
+ _, ok := dValue.SetString(intString, 10)
+ if !ok {
+ return Decimal{}, fmt.Errorf("can't convert %s to decimal", value)
+ }
+
+ if exp < math.MinInt32 || exp > math.MaxInt32 {
+ // NOTE(vadim): I doubt a string could realistically be this long
+ return Decimal{}, fmt.Errorf("can't convert %s to decimal: fractional part too long", originalInput)
+ }
+
+ return Decimal{
+ value: dValue,
+ exp: int32(exp),
+ }, nil
+}
+
+// RequireFromString returns a new Decimal from a string representation
+// or panics if NewFromString would have returned an error.
+//
+// Example:
+//
+// d := RequireFromString("-123.45")
+// d2 := RequireFromString(".0001")
+//
+func RequireFromString(value string) Decimal {
+ dec, err := NewFromString(value)
+ if err != nil {
+ panic(err)
+ }
+ return dec
+}
+
+// NewFromFloat converts a float64 to Decimal.
+//
+// The converted number will contain the number of significant digits that can be
+// represented in a float with reliable roundtrip.
+// This is typically 15 digits, but may be more in some cases.
+// See https://www.exploringbinary.com/decimal-precision-of-binary-floating-point-numbers/ for more information.
+//
+// For slightly faster conversion, use NewFromFloatWithExponent where you can specify the precision in absolute terms.
+//
+// NOTE: this will panic on NaN, +/-inf
+func NewFromFloat(value float64) Decimal {
+ if value == 0 {
+ return New(0, 0)
+ }
+ return newFromFloat(value, math.Float64bits(value), &float64info)
+}
+
+// NewFromFloat32 converts a float32 to Decimal.
+//
+// The converted number will contain the number of significant digits that can be
+// represented in a float with reliable roundtrip.
+// This is typically 6-8 digits depending on the input.
+// See https://www.exploringbinary.com/decimal-precision-of-binary-floating-point-numbers/ for more information.
+//
+// For slightly faster conversion, use NewFromFloatWithExponent where you can specify the precision in absolute terms.
+//
+// NOTE: this will panic on NaN, +/-inf
+func NewFromFloat32(value float32) Decimal {
+ if value == 0 {
+ return New(0, 0)
+ }
+ // XOR is workaround for https://github.com/golang/go/issues/26285
+ a := math.Float32bits(value) ^ 0x80808080
+ return newFromFloat(float64(value), uint64(a)^0x80808080, &float32info)
+}
+
+func newFromFloat(val float64, bits uint64, flt *floatInfo) Decimal {
+ if math.IsNaN(val) || math.IsInf(val, 0) {
+ panic(fmt.Sprintf("Cannot create a Decimal from %v", val))
+ }
+ exp := int(bits>>flt.mantbits) & (1<>(flt.expbits+flt.mantbits) != 0
+
+ roundShortest(&d, mant, exp, flt)
+ // If less than 19 digits, we can do calculation in an int64.
+ if d.nd < 19 {
+ tmp := int64(0)
+ m := int64(1)
+ for i := d.nd - 1; i >= 0; i-- {
+ tmp += m * int64(d.d[i]-'0')
+ m *= 10
+ }
+ if d.neg {
+ tmp *= -1
+ }
+ return Decimal{value: big.NewInt(tmp), exp: int32(d.dp) - int32(d.nd)}
+ }
+ dValue := new(big.Int)
+ dValue, ok := dValue.SetString(string(d.d[:d.nd]), 10)
+ if ok {
+ return Decimal{value: dValue, exp: int32(d.dp) - int32(d.nd)}
+ }
+
+ return NewFromFloatWithExponent(val, int32(d.dp)-int32(d.nd))
+}
+
+// NewFromFloatWithExponent converts a float64 to Decimal, with an arbitrary
+// number of fractional digits.
+//
+// Example:
+//
+// NewFromFloatWithExponent(123.456, -2).String() // output: "123.46"
+//
+func NewFromFloatWithExponent(value float64, exp int32) Decimal {
+ if math.IsNaN(value) || math.IsInf(value, 0) {
+ panic(fmt.Sprintf("Cannot create a Decimal from %v", value))
+ }
+
+ bits := math.Float64bits(value)
+ mant := bits & (1<<52 - 1)
+ exp2 := int32((bits >> 52) & (1<<11 - 1))
+ sign := bits >> 63
+
+ if exp2 == 0 {
+ // specials
+ if mant == 0 {
+ return Decimal{}
+ }
+ // subnormal
+ exp2++
+ } else {
+ // normal
+ mant |= 1 << 52
+ }
+
+ exp2 -= 1023 + 52
+
+ // normalizing base-2 values
+ for mant&1 == 0 {
+ mant = mant >> 1
+ exp2++
+ }
+
+ // maximum number of fractional base-10 digits to represent 2^N exactly cannot be more than -N if N<0
+ if exp < 0 && exp < exp2 {
+ if exp2 < 0 {
+ exp = exp2
+ } else {
+ exp = 0
+ }
+ }
+
+ // representing 10^M * 2^N as 5^M * 2^(M+N)
+ exp2 -= exp
+
+ temp := big.NewInt(1)
+ dMant := big.NewInt(int64(mant))
+
+ // applying 5^M
+ if exp > 0 {
+ temp = temp.SetInt64(int64(exp))
+ temp = temp.Exp(fiveInt, temp, nil)
+ } else if exp < 0 {
+ temp = temp.SetInt64(-int64(exp))
+ temp = temp.Exp(fiveInt, temp, nil)
+ dMant = dMant.Mul(dMant, temp)
+ temp = temp.SetUint64(1)
+ }
+
+ // applying 2^(M+N)
+ if exp2 > 0 {
+ dMant = dMant.Lsh(dMant, uint(exp2))
+ } else if exp2 < 0 {
+ temp = temp.Lsh(temp, uint(-exp2))
+ }
+
+ // rounding and downscaling
+ if exp > 0 || exp2 < 0 {
+ halfDown := new(big.Int).Rsh(temp, 1)
+ dMant = dMant.Add(dMant, halfDown)
+ dMant = dMant.Quo(dMant, temp)
+ }
+
+ if sign == 1 {
+ dMant = dMant.Neg(dMant)
+ }
+
+ return Decimal{
+ value: dMant,
+ exp: exp,
+ }
+}
+
+// rescale returns a rescaled version of the decimal. Returned
+// decimal may be less precise if the given exponent is bigger
+// than the initial exponent of the Decimal.
+// NOTE: this will truncate, NOT round
+//
+// Example:
+//
+// d := New(12345, -4)
+// d2 := d.rescale(-1)
+// d3 := d2.rescale(-4)
+// println(d1)
+// println(d2)
+// println(d3)
+//
+// Output:
+//
+// 1.2345
+// 1.2
+// 1.2000
+//
+func (d Decimal) rescale(exp int32) Decimal {
+ d.ensureInitialized()
+
+ if d.exp == exp {
+ return Decimal{
+ new(big.Int).Set(d.value),
+ d.exp,
+ }
+ }
+
+ // NOTE(vadim): must convert exps to float64 before - to prevent overflow
+ diff := math.Abs(float64(exp) - float64(d.exp))
+ value := new(big.Int).Set(d.value)
+
+ expScale := new(big.Int).Exp(tenInt, big.NewInt(int64(diff)), nil)
+ if exp > d.exp {
+ value = value.Quo(value, expScale)
+ } else if exp < d.exp {
+ value = value.Mul(value, expScale)
+ }
+
+ return Decimal{
+ value: value,
+ exp: exp,
+ }
+}
+
+// Abs returns the absolute value of the decimal.
+func (d Decimal) Abs() Decimal {
+ d.ensureInitialized()
+ d2Value := new(big.Int).Abs(d.value)
+ return Decimal{
+ value: d2Value,
+ exp: d.exp,
+ }
+}
+
+// Add returns d + d2.
+func (d Decimal) Add(d2 Decimal) Decimal {
+ rd, rd2 := RescalePair(d, d2)
+
+ d3Value := new(big.Int).Add(rd.value, rd2.value)
+ return Decimal{
+ value: d3Value,
+ exp: rd.exp,
+ }
+}
+
+// Sub returns d - d2.
+func (d Decimal) Sub(d2 Decimal) Decimal {
+ rd, rd2 := RescalePair(d, d2)
+
+ d3Value := new(big.Int).Sub(rd.value, rd2.value)
+ return Decimal{
+ value: d3Value,
+ exp: rd.exp,
+ }
+}
+
+// Neg returns -d.
+func (d Decimal) Neg() Decimal {
+ d.ensureInitialized()
+ val := new(big.Int).Neg(d.value)
+ return Decimal{
+ value: val,
+ exp: d.exp,
+ }
+}
+
+// Mul returns d * d2.
+func (d Decimal) Mul(d2 Decimal) Decimal {
+ d.ensureInitialized()
+ d2.ensureInitialized()
+
+ expInt64 := int64(d.exp) + int64(d2.exp)
+ if expInt64 > math.MaxInt32 || expInt64 < math.MinInt32 {
+ // NOTE(vadim): better to panic than give incorrect results, as
+ // Decimals are usually used for money
+ panic(fmt.Sprintf("exponent %v overflows an int32!", expInt64))
+ }
+
+ d3Value := new(big.Int).Mul(d.value, d2.value)
+ return Decimal{
+ value: d3Value,
+ exp: int32(expInt64),
+ }
+}
+
+// Shift shifts the decimal in base 10.
+// It shifts left when shift is positive and right if shift is negative.
+// In simpler terms, the given value for shift is added to the exponent
+// of the decimal.
+func (d Decimal) Shift(shift int32) Decimal {
+ d.ensureInitialized()
+ return Decimal{
+ value: new(big.Int).Set(d.value),
+ exp: d.exp + shift,
+ }
+}
+
+// Div returns d / d2. If it doesn't divide exactly, the result will have
+// DivisionPrecision digits after the decimal point.
+func (d Decimal) Div(d2 Decimal) Decimal {
+ return d.DivRound(d2, int32(DivisionPrecision))
+}
+
+// QuoRem does divsion with remainder
+// d.QuoRem(d2,precision) returns quotient q and remainder r such that
+// d = d2 * q + r, q an integer multiple of 10^(-precision)
+// 0 <= r < abs(d2) * 10 ^(-precision) if d>=0
+// 0 >= r > -abs(d2) * 10 ^(-precision) if d<0
+// Note that precision<0 is allowed as input.
+func (d Decimal) QuoRem(d2 Decimal, precision int32) (Decimal, Decimal) {
+ d.ensureInitialized()
+ d2.ensureInitialized()
+ if d2.value.Sign() == 0 {
+ panic("decimal division by 0")
+ }
+ scale := -precision
+ e := int64(d.exp - d2.exp - scale)
+ if e > math.MaxInt32 || e < math.MinInt32 {
+ panic("overflow in decimal QuoRem")
+ }
+ var aa, bb, expo big.Int
+ var scalerest int32
+ // d = a 10^ea
+ // d2 = b 10^eb
+ if e < 0 {
+ aa = *d.value
+ expo.SetInt64(-e)
+ bb.Exp(tenInt, &expo, nil)
+ bb.Mul(d2.value, &bb)
+ scalerest = d.exp
+ // now aa = a
+ // bb = b 10^(scale + eb - ea)
+ } else {
+ expo.SetInt64(e)
+ aa.Exp(tenInt, &expo, nil)
+ aa.Mul(d.value, &aa)
+ bb = *d2.value
+ scalerest = scale + d2.exp
+ // now aa = a ^ (ea - eb - scale)
+ // bb = b
+ }
+ var q, r big.Int
+ q.QuoRem(&aa, &bb, &r)
+ dq := Decimal{value: &q, exp: scale}
+ dr := Decimal{value: &r, exp: scalerest}
+ return dq, dr
+}
+
+// DivRound divides and rounds to a given precision
+// i.e. to an integer multiple of 10^(-precision)
+// for a positive quotient digit 5 is rounded up, away from 0
+// if the quotient is negative then digit 5 is rounded down, away from 0
+// Note that precision<0 is allowed as input.
+func (d Decimal) DivRound(d2 Decimal, precision int32) Decimal {
+ // QuoRem already checks initialization
+ q, r := d.QuoRem(d2, precision)
+ // the actual rounding decision is based on comparing r*10^precision and d2/2
+ // instead compare 2 r 10 ^precision and d2
+ var rv2 big.Int
+ rv2.Abs(r.value)
+ rv2.Lsh(&rv2, 1)
+ // now rv2 = abs(r.value) * 2
+ r2 := Decimal{value: &rv2, exp: r.exp + precision}
+ // r2 is now 2 * r * 10 ^ precision
+ var c = r2.Cmp(d2.Abs())
+
+ if c < 0 {
+ return q
+ }
+
+ if d.value.Sign()*d2.value.Sign() < 0 {
+ return q.Sub(New(1, -precision))
+ }
+
+ return q.Add(New(1, -precision))
+}
+
+// Mod returns d % d2.
+func (d Decimal) Mod(d2 Decimal) Decimal {
+ quo := d.Div(d2).Truncate(0)
+ return d.Sub(d2.Mul(quo))
+}
+
+// Pow returns d to the power d2
+func (d Decimal) Pow(d2 Decimal) Decimal {
+ var temp Decimal
+ if d2.IntPart() == 0 {
+ return NewFromFloat(1)
+ }
+ temp = d.Pow(d2.Div(NewFromFloat(2)))
+ if d2.IntPart()%2 == 0 {
+ return temp.Mul(temp)
+ }
+ if d2.IntPart() > 0 {
+ return temp.Mul(temp).Mul(d)
+ }
+ return temp.Mul(temp).Div(d)
+}
+
+// Cmp compares the numbers represented by d and d2 and returns:
+//
+// -1 if d < d2
+// 0 if d == d2
+// +1 if d > d2
+//
+func (d Decimal) Cmp(d2 Decimal) int {
+ d.ensureInitialized()
+ d2.ensureInitialized()
+
+ if d.exp == d2.exp {
+ return d.value.Cmp(d2.value)
+ }
+
+ rd, rd2 := RescalePair(d, d2)
+
+ return rd.value.Cmp(rd2.value)
+}
+
+// Equal returns whether the numbers represented by d and d2 are equal.
+func (d Decimal) Equal(d2 Decimal) bool {
+ return d.Cmp(d2) == 0
+}
+
+// Equals is deprecated, please use Equal method instead
+func (d Decimal) Equals(d2 Decimal) bool {
+ return d.Equal(d2)
+}
+
+// GreaterThan (GT) returns true when d is greater than d2.
+func (d Decimal) GreaterThan(d2 Decimal) bool {
+ return d.Cmp(d2) == 1
+}
+
+// GreaterThanOrEqual (GTE) returns true when d is greater than or equal to d2.
+func (d Decimal) GreaterThanOrEqual(d2 Decimal) bool {
+ cmp := d.Cmp(d2)
+ return cmp == 1 || cmp == 0
+}
+
+// LessThan (LT) returns true when d is less than d2.
+func (d Decimal) LessThan(d2 Decimal) bool {
+ return d.Cmp(d2) == -1
+}
+
+// LessThanOrEqual (LTE) returns true when d is less than or equal to d2.
+func (d Decimal) LessThanOrEqual(d2 Decimal) bool {
+ cmp := d.Cmp(d2)
+ return cmp == -1 || cmp == 0
+}
+
+// Sign returns:
+//
+// -1 if d < 0
+// 0 if d == 0
+// +1 if d > 0
+//
+func (d Decimal) Sign() int {
+ if d.value == nil {
+ return 0
+ }
+ return d.value.Sign()
+}
+
+// IsPositive return
+//
+// true if d > 0
+// false if d == 0
+// false if d < 0
+func (d Decimal) IsPositive() bool {
+ return d.Sign() == 1
+}
+
+// IsNegative return
+//
+// true if d < 0
+// false if d == 0
+// false if d > 0
+func (d Decimal) IsNegative() bool {
+ return d.Sign() == -1
+}
+
+// IsZero return
+//
+// true if d == 0
+// false if d > 0
+// false if d < 0
+func (d Decimal) IsZero() bool {
+ return d.Sign() == 0
+}
+
+// Exponent returns the exponent, or scale component of the decimal.
+func (d Decimal) Exponent() int32 {
+ return d.exp
+}
+
+// Coefficient returns the coefficient of the decimal. It is scaled by 10^Exponent()
+func (d Decimal) Coefficient() *big.Int {
+ d.ensureInitialized()
+ // we copy the coefficient so that mutating the result does not mutate the
+ // Decimal.
+ return big.NewInt(0).Set(d.value)
+}
+
+// IntPart returns the integer component of the decimal.
+func (d Decimal) IntPart() int64 {
+ scaledD := d.rescale(0)
+ return scaledD.value.Int64()
+}
+
+// BigInt returns integer component of the decimal as a BigInt.
+func (d Decimal) BigInt() *big.Int {
+ scaledD := d.rescale(0)
+ i := &big.Int{}
+ i.SetString(scaledD.String(), 10)
+ return i
+}
+
+// BigFloat returns decimal as BigFloat.
+// Be aware that casting decimal to BigFloat might cause a loss of precision.
+func (d Decimal) BigFloat() *big.Float {
+ f := &big.Float{}
+ f.SetString(d.String())
+ return f
+}
+
+// Rat returns a rational number representation of the decimal.
+func (d Decimal) Rat() *big.Rat {
+ d.ensureInitialized()
+ if d.exp <= 0 {
+ // NOTE(vadim): must negate after casting to prevent int32 overflow
+ denom := new(big.Int).Exp(tenInt, big.NewInt(-int64(d.exp)), nil)
+ return new(big.Rat).SetFrac(d.value, denom)
+ }
+
+ mul := new(big.Int).Exp(tenInt, big.NewInt(int64(d.exp)), nil)
+ num := new(big.Int).Mul(d.value, mul)
+ return new(big.Rat).SetFrac(num, oneInt)
+}
+
+// Float64 returns the nearest float64 value for d and a bool indicating
+// whether f represents d exactly.
+// For more details, see the documentation for big.Rat.Float64
+func (d Decimal) Float64() (f float64, exact bool) {
+ return d.Rat().Float64()
+}
+
+// String returns the string representation of the decimal
+// with the fixed point.
+//
+// Example:
+//
+// d := New(-12345, -3)
+// println(d.String())
+//
+// Output:
+//
+// -12.345
+//
+func (d Decimal) String() string {
+ return d.string(true)
+}
+
+// StringFixed returns a rounded fixed-point string with places digits after
+// the decimal point.
+//
+// Example:
+//
+// NewFromFloat(0).StringFixed(2) // output: "0.00"
+// NewFromFloat(0).StringFixed(0) // output: "0"
+// NewFromFloat(5.45).StringFixed(0) // output: "5"
+// NewFromFloat(5.45).StringFixed(1) // output: "5.5"
+// NewFromFloat(5.45).StringFixed(2) // output: "5.45"
+// NewFromFloat(5.45).StringFixed(3) // output: "5.450"
+// NewFromFloat(545).StringFixed(-1) // output: "550"
+//
+func (d Decimal) StringFixed(places int32) string {
+ rounded := d.Round(places)
+ return rounded.string(false)
+}
+
+// StringFixedBank returns a banker rounded fixed-point string with places digits
+// after the decimal point.
+//
+// Example:
+//
+// NewFromFloat(0).StringFixedBank(2) // output: "0.00"
+// NewFromFloat(0).StringFixedBank(0) // output: "0"
+// NewFromFloat(5.45).StringFixedBank(0) // output: "5"
+// NewFromFloat(5.45).StringFixedBank(1) // output: "5.4"
+// NewFromFloat(5.45).StringFixedBank(2) // output: "5.45"
+// NewFromFloat(5.45).StringFixedBank(3) // output: "5.450"
+// NewFromFloat(545).StringFixedBank(-1) // output: "540"
+//
+func (d Decimal) StringFixedBank(places int32) string {
+ rounded := d.RoundBank(places)
+ return rounded.string(false)
+}
+
+// StringFixedCash returns a Swedish/Cash rounded fixed-point string. For
+// more details see the documentation at function RoundCash.
+func (d Decimal) StringFixedCash(interval uint8) string {
+ rounded := d.RoundCash(interval)
+ return rounded.string(false)
+}
+
+// Round rounds the decimal to places decimal places.
+// If places < 0, it will round the integer part to the nearest 10^(-places).
+//
+// Example:
+//
+// NewFromFloat(5.45).Round(1).String() // output: "5.5"
+// NewFromFloat(545).Round(-1).String() // output: "550"
+//
+func (d Decimal) Round(places int32) Decimal {
+ // truncate to places + 1
+ ret := d.rescale(-places - 1)
+
+ // add sign(d) * 0.5
+ if ret.value.Sign() < 0 {
+ ret.value.Sub(ret.value, fiveInt)
+ } else {
+ ret.value.Add(ret.value, fiveInt)
+ }
+
+ // floor for positive numbers, ceil for negative numbers
+ _, m := ret.value.DivMod(ret.value, tenInt, new(big.Int))
+ ret.exp++
+ if ret.value.Sign() < 0 && m.Cmp(zeroInt) != 0 {
+ ret.value.Add(ret.value, oneInt)
+ }
+
+ return ret
+}
+
+// RoundBank rounds the decimal to places decimal places.
+// If the final digit to round is equidistant from the nearest two integers the
+// rounded value is taken as the even number
+//
+// If places < 0, it will round the integer part to the nearest 10^(-places).
+//
+// Examples:
+//
+// NewFromFloat(5.45).Round(1).String() // output: "5.4"
+// NewFromFloat(545).Round(-1).String() // output: "540"
+// NewFromFloat(5.46).Round(1).String() // output: "5.5"
+// NewFromFloat(546).Round(-1).String() // output: "550"
+// NewFromFloat(5.55).Round(1).String() // output: "5.6"
+// NewFromFloat(555).Round(-1).String() // output: "560"
+//
+func (d Decimal) RoundBank(places int32) Decimal {
+
+ round := d.Round(places)
+ remainder := d.Sub(round).Abs()
+
+ half := New(5, -places-1)
+ if remainder.Cmp(half) == 0 && round.value.Bit(0) != 0 {
+ if round.value.Sign() < 0 {
+ round.value.Add(round.value, oneInt)
+ } else {
+ round.value.Sub(round.value, oneInt)
+ }
+ }
+
+ return round
+}
+
+// RoundCash aka Cash/Penny/öre rounding rounds decimal to a specific
+// interval. The amount payable for a cash transaction is rounded to the nearest
+// multiple of the minimum currency unit available. The following intervals are
+// available: 5, 10, 25, 50 and 100; any other number throws a panic.
+// 5: 5 cent rounding 3.43 => 3.45
+// 10: 10 cent rounding 3.45 => 3.50 (5 gets rounded up)
+// 25: 25 cent rounding 3.41 => 3.50
+// 50: 50 cent rounding 3.75 => 4.00
+// 100: 100 cent rounding 3.50 => 4.00
+// For more details: https://en.wikipedia.org/wiki/Cash_rounding
+func (d Decimal) RoundCash(interval uint8) Decimal {
+ var iVal *big.Int
+ switch interval {
+ case 5:
+ iVal = twentyInt
+ case 10:
+ iVal = tenInt
+ case 25:
+ iVal = fourInt
+ case 50:
+ iVal = twoInt
+ case 100:
+ iVal = oneInt
+ default:
+ panic(fmt.Sprintf("Decimal does not support this Cash rounding interval `%d`. Supported: 5, 10, 25, 50, 100", interval))
+ }
+ dVal := Decimal{
+ value: iVal,
+ }
+
+ // TODO: optimize those calculations to reduce the high allocations (~29 allocs).
+ return d.Mul(dVal).Round(0).Div(dVal).Truncate(2)
+}
+
+// Floor returns the nearest integer value less than or equal to d.
+func (d Decimal) Floor() Decimal {
+ d.ensureInitialized()
+
+ if d.exp >= 0 {
+ return d
+ }
+
+ exp := big.NewInt(10)
+
+ // NOTE(vadim): must negate after casting to prevent int32 overflow
+ exp.Exp(exp, big.NewInt(-int64(d.exp)), nil)
+
+ z := new(big.Int).Div(d.value, exp)
+ return Decimal{value: z, exp: 0}
+}
+
+// Ceil returns the nearest integer value greater than or equal to d.
+func (d Decimal) Ceil() Decimal {
+ d.ensureInitialized()
+
+ if d.exp >= 0 {
+ return d
+ }
+
+ exp := big.NewInt(10)
+
+ // NOTE(vadim): must negate after casting to prevent int32 overflow
+ exp.Exp(exp, big.NewInt(-int64(d.exp)), nil)
+
+ z, m := new(big.Int).DivMod(d.value, exp, new(big.Int))
+ if m.Cmp(zeroInt) != 0 {
+ z.Add(z, oneInt)
+ }
+ return Decimal{value: z, exp: 0}
+}
+
+// Truncate truncates off digits from the number, without rounding.
+//
+// NOTE: precision is the last digit that will not be truncated (must be >= 0).
+//
+// Example:
+//
+// decimal.NewFromString("123.456").Truncate(2).String() // "123.45"
+//
+func (d Decimal) Truncate(precision int32) Decimal {
+ d.ensureInitialized()
+ if precision >= 0 && -precision > d.exp {
+ return d.rescale(-precision)
+ }
+ return d
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+func (d *Decimal) UnmarshalJSON(decimalBytes []byte) error {
+ if string(decimalBytes) == "null" {
+ return nil
+ }
+
+ str, err := unquoteIfQuoted(decimalBytes)
+ if err != nil {
+ return fmt.Errorf("error decoding string '%s': %s", decimalBytes, err)
+ }
+
+ decimal, err := NewFromString(str)
+ *d = decimal
+ if err != nil {
+ return fmt.Errorf("error decoding string '%s': %s", str, err)
+ }
+ return nil
+}
+
+// MarshalJSON implements the json.Marshaler interface.
+func (d Decimal) MarshalJSON() ([]byte, error) {
+ var str string
+ if MarshalJSONWithoutQuotes {
+ str = d.String()
+ } else {
+ str = "\"" + d.String() + "\""
+ }
+ return []byte(str), nil
+}
+
+// UnmarshalBinary implements the encoding.BinaryUnmarshaler interface. As a string representation
+// is already used when encoding to text, this method stores that string as []byte
+func (d *Decimal) UnmarshalBinary(data []byte) error {
+ // Extract the exponent
+ d.exp = int32(binary.BigEndian.Uint32(data[:4]))
+
+ // Extract the value
+ d.value = new(big.Int)
+ return d.value.GobDecode(data[4:])
+}
+
+// MarshalBinary implements the encoding.BinaryMarshaler interface.
+func (d Decimal) MarshalBinary() (data []byte, err error) {
+ // Write the exponent first since it's a fixed size
+ v1 := make([]byte, 4)
+ binary.BigEndian.PutUint32(v1, uint32(d.exp))
+
+ // Add the value
+ var v2 []byte
+ if v2, err = d.value.GobEncode(); err != nil {
+ return
+ }
+
+ // Return the byte array
+ data = append(v1, v2...)
+ return
+}
+
+// Scan implements the sql.Scanner interface for database deserialization.
+func (d *Decimal) Scan(value interface{}) error {
+ // first try to see if the data is stored in database as a Numeric datatype
+ switch v := value.(type) {
+
+ case float32:
+ *d = NewFromFloat(float64(v))
+ return nil
+
+ case float64:
+ // numeric in sqlite3 sends us float64
+ *d = NewFromFloat(v)
+ return nil
+
+ case int64:
+ // at least in sqlite3 when the value is 0 in db, the data is sent
+ // to us as an int64 instead of a float64 ...
+ *d = New(v, 0)
+ return nil
+
+ default:
+ // default is trying to interpret value stored as string
+ str, err := unquoteIfQuoted(v)
+ if err != nil {
+ return err
+ }
+ *d, err = NewFromString(str)
+ return err
+ }
+}
+
+// Value implements the driver.Valuer interface for database serialization.
+func (d Decimal) Value() (driver.Value, error) {
+ return d.String(), nil
+}
+
+// UnmarshalText implements the encoding.TextUnmarshaler interface for XML
+// deserialization.
+func (d *Decimal) UnmarshalText(text []byte) error {
+ str := string(text)
+
+ dec, err := NewFromString(str)
+ *d = dec
+ if err != nil {
+ return fmt.Errorf("error decoding string '%s': %s", str, err)
+ }
+
+ return nil
+}
+
+// MarshalText implements the encoding.TextMarshaler interface for XML
+// serialization.
+func (d Decimal) MarshalText() (text []byte, err error) {
+ return []byte(d.String()), nil
+}
+
+// GobEncode implements the gob.GobEncoder interface for gob serialization.
+func (d Decimal) GobEncode() ([]byte, error) {
+ return d.MarshalBinary()
+}
+
+// GobDecode implements the gob.GobDecoder interface for gob serialization.
+func (d *Decimal) GobDecode(data []byte) error {
+ return d.UnmarshalBinary(data)
+}
+
+// StringScaled first scales the decimal then calls .String() on it.
+// NOTE: buggy, unintuitive, and DEPRECATED! Use StringFixed instead.
+func (d Decimal) StringScaled(exp int32) string {
+ return d.rescale(exp).String()
+}
+
+func (d Decimal) string(trimTrailingZeros bool) string {
+ if d.exp >= 0 {
+ return d.rescale(0).value.String()
+ }
+
+ abs := new(big.Int).Abs(d.value)
+ str := abs.String()
+
+ var intPart, fractionalPart string
+
+ // NOTE(vadim): this cast to int will cause bugs if d.exp == INT_MIN
+ // and you are on a 32-bit machine. Won't fix this super-edge case.
+ dExpInt := int(d.exp)
+ if len(str) > -dExpInt {
+ intPart = str[:len(str)+dExpInt]
+ fractionalPart = str[len(str)+dExpInt:]
+ } else {
+ intPart = "0"
+
+ num0s := -dExpInt - len(str)
+ fractionalPart = strings.Repeat("0", num0s) + str
+ }
+
+ if trimTrailingZeros {
+ i := len(fractionalPart) - 1
+ for ; i >= 0; i-- {
+ if fractionalPart[i] != '0' {
+ break
+ }
+ }
+ fractionalPart = fractionalPart[:i+1]
+ }
+
+ number := intPart
+ if len(fractionalPart) > 0 {
+ number += "." + fractionalPart
+ }
+
+ if d.value.Sign() < 0 {
+ return "-" + number
+ }
+
+ return number
+}
+
+func (d *Decimal) ensureInitialized() {
+ if d.value == nil {
+ d.value = new(big.Int)
+ }
+}
+
+// Min returns the smallest Decimal that was passed in the arguments.
+//
+// To call this function with an array, you must do:
+//
+// Min(arr[0], arr[1:]...)
+//
+// This makes it harder to accidentally call Min with 0 arguments.
+func Min(first Decimal, rest ...Decimal) Decimal {
+ ans := first
+ for _, item := range rest {
+ if item.Cmp(ans) < 0 {
+ ans = item
+ }
+ }
+ return ans
+}
+
+// Max returns the largest Decimal that was passed in the arguments.
+//
+// To call this function with an array, you must do:
+//
+// Max(arr[0], arr[1:]...)
+//
+// This makes it harder to accidentally call Max with 0 arguments.
+func Max(first Decimal, rest ...Decimal) Decimal {
+ ans := first
+ for _, item := range rest {
+ if item.Cmp(ans) > 0 {
+ ans = item
+ }
+ }
+ return ans
+}
+
+// Sum returns the combined total of the provided first and rest Decimals
+func Sum(first Decimal, rest ...Decimal) Decimal {
+ total := first
+ for _, item := range rest {
+ total = total.Add(item)
+ }
+
+ return total
+}
+
+// Avg returns the average value of the provided first and rest Decimals
+func Avg(first Decimal, rest ...Decimal) Decimal {
+ count := New(int64(len(rest)+1), 0)
+ sum := Sum(first, rest...)
+ return sum.Div(count)
+}
+
+// RescalePair rescales two decimals to common exponential value (minimal exp of both decimals)
+func RescalePair(d1 Decimal, d2 Decimal) (Decimal, Decimal) {
+ d1.ensureInitialized()
+ d2.ensureInitialized()
+
+ if d1.exp == d2.exp {
+ return d1, d2
+ }
+
+ baseScale := min(d1.exp, d2.exp)
+ if baseScale != d1.exp {
+ return d1.rescale(baseScale), d2
+ }
+ return d1, d2.rescale(baseScale)
+}
+
+func min(x, y int32) int32 {
+ if x >= y {
+ return y
+ }
+ return x
+}
+
+func unquoteIfQuoted(value interface{}) (string, error) {
+ var bytes []byte
+
+ switch v := value.(type) {
+ case string:
+ bytes = []byte(v)
+ case []byte:
+ bytes = v
+ default:
+ return "", fmt.Errorf("could not convert value '%+v' to byte array of type '%T'",
+ value, value)
+ }
+
+ // If the amount is quoted, strip the quotes
+ if len(bytes) > 2 && bytes[0] == '"' && bytes[len(bytes)-1] == '"' {
+ bytes = bytes[1 : len(bytes)-1]
+ }
+ return string(bytes), nil
+}
+
+// NullDecimal represents a nullable decimal with compatibility for
+// scanning null values from the database.
+type NullDecimal struct {
+ Decimal Decimal
+ Valid bool
+}
+
+// Scan implements the sql.Scanner interface for database deserialization.
+func (d *NullDecimal) Scan(value interface{}) error {
+ if value == nil {
+ d.Valid = false
+ return nil
+ }
+ d.Valid = true
+ return d.Decimal.Scan(value)
+}
+
+// Value implements the driver.Valuer interface for database serialization.
+func (d NullDecimal) Value() (driver.Value, error) {
+ if !d.Valid {
+ return nil, nil
+ }
+ return d.Decimal.Value()
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+func (d *NullDecimal) UnmarshalJSON(decimalBytes []byte) error {
+ if string(decimalBytes) == "null" {
+ d.Valid = false
+ return nil
+ }
+ d.Valid = true
+ return d.Decimal.UnmarshalJSON(decimalBytes)
+}
+
+// MarshalJSON implements the json.Marshaler interface.
+func (d NullDecimal) MarshalJSON() ([]byte, error) {
+ if !d.Valid {
+ return []byte("null"), nil
+ }
+ return d.Decimal.MarshalJSON()
+}
+
+// Trig functions
+
+// Atan returns the arctangent, in radians, of x.
+func (d Decimal) Atan() Decimal {
+ if d.Equal(NewFromFloat(0.0)) {
+ return d
+ }
+ if d.GreaterThan(NewFromFloat(0.0)) {
+ return d.satan()
+ }
+ return d.Neg().satan().Neg()
+}
+
+func (d Decimal) xatan() Decimal {
+ P0 := NewFromFloat(-8.750608600031904122785e-01)
+ P1 := NewFromFloat(-1.615753718733365076637e+01)
+ P2 := NewFromFloat(-7.500855792314704667340e+01)
+ P3 := NewFromFloat(-1.228866684490136173410e+02)
+ P4 := NewFromFloat(-6.485021904942025371773e+01)
+ Q0 := NewFromFloat(2.485846490142306297962e+01)
+ Q1 := NewFromFloat(1.650270098316988542046e+02)
+ Q2 := NewFromFloat(4.328810604912902668951e+02)
+ Q3 := NewFromFloat(4.853903996359136964868e+02)
+ Q4 := NewFromFloat(1.945506571482613964425e+02)
+ z := d.Mul(d)
+ b1 := P0.Mul(z).Add(P1).Mul(z).Add(P2).Mul(z).Add(P3).Mul(z).Add(P4).Mul(z)
+ b2 := z.Add(Q0).Mul(z).Add(Q1).Mul(z).Add(Q2).Mul(z).Add(Q3).Mul(z).Add(Q4)
+ z = b1.Div(b2)
+ z = d.Mul(z).Add(d)
+ return z
+}
+
+// satan reduces its argument (known to be positive)
+// to the range [0, 0.66] and calls xatan.
+func (d Decimal) satan() Decimal {
+ Morebits := NewFromFloat(6.123233995736765886130e-17) // pi/2 = PIO2 + Morebits
+ Tan3pio8 := NewFromFloat(2.41421356237309504880) // tan(3*pi/8)
+ pi := NewFromFloat(3.14159265358979323846264338327950288419716939937510582097494459)
+
+ if d.LessThanOrEqual(NewFromFloat(0.66)) {
+ return d.xatan()
+ }
+ if d.GreaterThan(Tan3pio8) {
+ return pi.Div(NewFromFloat(2.0)).Sub(NewFromFloat(1.0).Div(d).xatan()).Add(Morebits)
+ }
+ return pi.Div(NewFromFloat(4.0)).Add((d.Sub(NewFromFloat(1.0)).Div(d.Add(NewFromFloat(1.0)))).xatan()).Add(NewFromFloat(0.5).Mul(Morebits))
+}
+
+// sin coefficients
+var _sin = [...]Decimal{
+ NewFromFloat(1.58962301576546568060e-10), // 0x3de5d8fd1fd19ccd
+ NewFromFloat(-2.50507477628578072866e-8), // 0xbe5ae5e5a9291f5d
+ NewFromFloat(2.75573136213857245213e-6), // 0x3ec71de3567d48a1
+ NewFromFloat(-1.98412698295895385996e-4), // 0xbf2a01a019bfdf03
+ NewFromFloat(8.33333333332211858878e-3), // 0x3f8111111110f7d0
+ NewFromFloat(-1.66666666666666307295e-1), // 0xbfc5555555555548
+}
+
+// Sin returns the sine of the radian argument x.
+func (d Decimal) Sin() Decimal {
+ PI4A := NewFromFloat(7.85398125648498535156e-1) // 0x3fe921fb40000000, Pi/4 split into three parts
+ PI4B := NewFromFloat(3.77489470793079817668e-8) // 0x3e64442d00000000,
+ PI4C := NewFromFloat(2.69515142907905952645e-15) // 0x3ce8469898cc5170,
+ M4PI := NewFromFloat(1.273239544735162542821171882678754627704620361328125) // 4/pi
+
+ if d.Equal(NewFromFloat(0.0)) {
+ return d
+ }
+ // make argument positive but save the sign
+ sign := false
+ if d.LessThan(NewFromFloat(0.0)) {
+ d = d.Neg()
+ sign = true
+ }
+
+ j := d.Mul(M4PI).IntPart() // integer part of x/(Pi/4), as integer for tests on the phase angle
+ y := NewFromFloat(float64(j)) // integer part of x/(Pi/4), as float
+
+ // map zeros to origin
+ if j&1 == 1 {
+ j++
+ y = y.Add(NewFromFloat(1.0))
+ }
+ j &= 7 // octant modulo 2Pi radians (360 degrees)
+ // reflect in x axis
+ if j > 3 {
+ sign = !sign
+ j -= 4
+ }
+ z := d.Sub(y.Mul(PI4A)).Sub(y.Mul(PI4B)).Sub(y.Mul(PI4C)) // Extended precision modular arithmetic
+ zz := z.Mul(z)
+
+ if j == 1 || j == 2 {
+ w := zz.Mul(zz).Mul(_cos[0].Mul(zz).Add(_cos[1]).Mul(zz).Add(_cos[2]).Mul(zz).Add(_cos[3]).Mul(zz).Add(_cos[4]).Mul(zz).Add(_cos[5]))
+ y = NewFromFloat(1.0).Sub(NewFromFloat(0.5).Mul(zz)).Add(w)
+ } else {
+ y = z.Add(z.Mul(zz).Mul(_sin[0].Mul(zz).Add(_sin[1]).Mul(zz).Add(_sin[2]).Mul(zz).Add(_sin[3]).Mul(zz).Add(_sin[4]).Mul(zz).Add(_sin[5])))
+ }
+ if sign {
+ y = y.Neg()
+ }
+ return y
+}
+
+// cos coefficients
+var _cos = [...]Decimal{
+ NewFromFloat(-1.13585365213876817300e-11), // 0xbda8fa49a0861a9b
+ NewFromFloat(2.08757008419747316778e-9), // 0x3e21ee9d7b4e3f05
+ NewFromFloat(-2.75573141792967388112e-7), // 0xbe927e4f7eac4bc6
+ NewFromFloat(2.48015872888517045348e-5), // 0x3efa01a019c844f5
+ NewFromFloat(-1.38888888888730564116e-3), // 0xbf56c16c16c14f91
+ NewFromFloat(4.16666666666665929218e-2), // 0x3fa555555555554b
+}
+
+// Cos returns the cosine of the radian argument x.
+func (d Decimal) Cos() Decimal {
+
+ PI4A := NewFromFloat(7.85398125648498535156e-1) // 0x3fe921fb40000000, Pi/4 split into three parts
+ PI4B := NewFromFloat(3.77489470793079817668e-8) // 0x3e64442d00000000,
+ PI4C := NewFromFloat(2.69515142907905952645e-15) // 0x3ce8469898cc5170,
+ M4PI := NewFromFloat(1.273239544735162542821171882678754627704620361328125) // 4/pi
+
+ // make argument positive
+ sign := false
+ if d.LessThan(NewFromFloat(0.0)) {
+ d = d.Neg()
+ }
+
+ j := d.Mul(M4PI).IntPart() // integer part of x/(Pi/4), as integer for tests on the phase angle
+ y := NewFromFloat(float64(j)) // integer part of x/(Pi/4), as float
+
+ // map zeros to origin
+ if j&1 == 1 {
+ j++
+ y = y.Add(NewFromFloat(1.0))
+ }
+ j &= 7 // octant modulo 2Pi radians (360 degrees)
+ // reflect in x axis
+ if j > 3 {
+ sign = !sign
+ j -= 4
+ }
+ if j > 1 {
+ sign = !sign
+ }
+
+ z := d.Sub(y.Mul(PI4A)).Sub(y.Mul(PI4B)).Sub(y.Mul(PI4C)) // Extended precision modular arithmetic
+ zz := z.Mul(z)
+
+ if j == 1 || j == 2 {
+ y = z.Add(z.Mul(zz).Mul(_sin[0].Mul(zz).Add(_sin[1]).Mul(zz).Add(_sin[2]).Mul(zz).Add(_sin[3]).Mul(zz).Add(_sin[4]).Mul(zz).Add(_sin[5])))
+ } else {
+ w := zz.Mul(zz).Mul(_cos[0].Mul(zz).Add(_cos[1]).Mul(zz).Add(_cos[2]).Mul(zz).Add(_cos[3]).Mul(zz).Add(_cos[4]).Mul(zz).Add(_cos[5]))
+ y = NewFromFloat(1.0).Sub(NewFromFloat(0.5).Mul(zz)).Add(w)
+ }
+ if sign {
+ y = y.Neg()
+ }
+ return y
+}
+
+var _tanP = [...]Decimal{
+ NewFromFloat(-1.30936939181383777646e+4), // 0xc0c992d8d24f3f38
+ NewFromFloat(1.15351664838587416140e+6), // 0x413199eca5fc9ddd
+ NewFromFloat(-1.79565251976484877988e+7), // 0xc1711fead3299176
+}
+var _tanQ = [...]Decimal{
+ NewFromFloat(1.00000000000000000000e+0),
+ NewFromFloat(1.36812963470692954678e+4), //0x40cab8a5eeb36572
+ NewFromFloat(-1.32089234440210967447e+6), //0xc13427bc582abc96
+ NewFromFloat(2.50083801823357915839e+7), //0x4177d98fc2ead8ef
+ NewFromFloat(-5.38695755929454629881e+7), //0xc189afe03cbe5a31
+}
+
+// Tan returns the tangent of the radian argument x.
+func (d Decimal) Tan() Decimal {
+
+ PI4A := NewFromFloat(7.85398125648498535156e-1) // 0x3fe921fb40000000, Pi/4 split into three parts
+ PI4B := NewFromFloat(3.77489470793079817668e-8) // 0x3e64442d00000000,
+ PI4C := NewFromFloat(2.69515142907905952645e-15) // 0x3ce8469898cc5170,
+ M4PI := NewFromFloat(1.273239544735162542821171882678754627704620361328125) // 4/pi
+
+ if d.Equal(NewFromFloat(0.0)) {
+ return d
+ }
+
+ // make argument positive but save the sign
+ sign := false
+ if d.LessThan(NewFromFloat(0.0)) {
+ d = d.Neg()
+ sign = true
+ }
+
+ j := d.Mul(M4PI).IntPart() // integer part of x/(Pi/4), as integer for tests on the phase angle
+ y := NewFromFloat(float64(j)) // integer part of x/(Pi/4), as float
+
+ // map zeros to origin
+ if j&1 == 1 {
+ j++
+ y = y.Add(NewFromFloat(1.0))
+ }
+
+ z := d.Sub(y.Mul(PI4A)).Sub(y.Mul(PI4B)).Sub(y.Mul(PI4C)) // Extended precision modular arithmetic
+ zz := z.Mul(z)
+
+ if zz.GreaterThan(NewFromFloat(1e-14)) {
+ w := zz.Mul(_tanP[0].Mul(zz).Add(_tanP[1]).Mul(zz).Add(_tanP[2]))
+ x := zz.Add(_tanQ[1]).Mul(zz).Add(_tanQ[2]).Mul(zz).Add(_tanQ[3]).Mul(zz).Add(_tanQ[4])
+ y = z.Add(z.Mul(w.Div(x)))
+ } else {
+ y = z
+ }
+ if j&2 == 2 {
+ y = NewFromFloat(-1.0).Div(y)
+ }
+ if sign {
+ y = y.Neg()
+ }
+ return y
+}
diff --git a/vendor/github.com/shopspring/decimal/go.mod b/vendor/github.com/shopspring/decimal/go.mod
new file mode 100644
index 0000000..ae1b7aa
--- /dev/null
+++ b/vendor/github.com/shopspring/decimal/go.mod
@@ -0,0 +1,3 @@
+module github.com/shopspring/decimal
+
+go 1.13
diff --git a/vendor/github.com/shopspring/decimal/rounding.go b/vendor/github.com/shopspring/decimal/rounding.go
new file mode 100644
index 0000000..8008f55
--- /dev/null
+++ b/vendor/github.com/shopspring/decimal/rounding.go
@@ -0,0 +1,119 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Multiprecision decimal numbers.
+// For floating-point formatting only; not general purpose.
+// Only operations are assign and (binary) left/right shift.
+// Can do binary floating point in multiprecision decimal precisely
+// because 2 divides 10; cannot do decimal floating point
+// in multiprecision binary precisely.
+
+package decimal
+
+type floatInfo struct {
+ mantbits uint
+ expbits uint
+ bias int
+}
+
+var float32info = floatInfo{23, 8, -127}
+var float64info = floatInfo{52, 11, -1023}
+
+// roundShortest rounds d (= mant * 2^exp) to the shortest number of digits
+// that will let the original floating point value be precisely reconstructed.
+func roundShortest(d *decimal, mant uint64, exp int, flt *floatInfo) {
+ // If mantissa is zero, the number is zero; stop now.
+ if mant == 0 {
+ d.nd = 0
+ return
+ }
+
+ // Compute upper and lower such that any decimal number
+ // between upper and lower (possibly inclusive)
+ // will round to the original floating point number.
+
+ // We may see at once that the number is already shortest.
+ //
+ // Suppose d is not denormal, so that 2^exp <= d < 10^dp.
+ // The closest shorter number is at least 10^(dp-nd) away.
+ // The lower/upper bounds computed below are at distance
+ // at most 2^(exp-mantbits).
+ //
+ // So the number is already shortest if 10^(dp-nd) > 2^(exp-mantbits),
+ // or equivalently log2(10)*(dp-nd) > exp-mantbits.
+ // It is true if 332/100*(dp-nd) >= exp-mantbits (log2(10) > 3.32).
+ minexp := flt.bias + 1 // minimum possible exponent
+ if exp > minexp && 332*(d.dp-d.nd) >= 100*(exp-int(flt.mantbits)) {
+ // The number is already shortest.
+ return
+ }
+
+ // d = mant << (exp - mantbits)
+ // Next highest floating point number is mant+1 << exp-mantbits.
+ // Our upper bound is halfway between, mant*2+1 << exp-mantbits-1.
+ upper := new(decimal)
+ upper.Assign(mant*2 + 1)
+ upper.Shift(exp - int(flt.mantbits) - 1)
+
+ // d = mant << (exp - mantbits)
+ // Next lowest floating point number is mant-1 << exp-mantbits,
+ // unless mant-1 drops the significant bit and exp is not the minimum exp,
+ // in which case the next lowest is mant*2-1 << exp-mantbits-1.
+ // Either way, call it mantlo << explo-mantbits.
+ // Our lower bound is halfway between, mantlo*2+1 << explo-mantbits-1.
+ var mantlo uint64
+ var explo int
+ if mant > 1<