mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-29 02:44:08 -05:00
9fe4437bda
* Use vendored go-swagger * vendor go-swagger * revert un wanteed change * remove un-needed GO111MODULE * Update Makefile Co-Authored-By: techknowlogick <matti@mdranta.net>
803 lines
22 KiB
Go
803 lines
22 KiB
Go
package toml
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"reflect"
|
|
"sort"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
const (
|
|
tagFieldName = "toml"
|
|
tagFieldComment = "comment"
|
|
tagCommented = "commented"
|
|
tagMultiline = "multiline"
|
|
tagDefault = "default"
|
|
)
|
|
|
|
type tomlOpts struct {
|
|
name string
|
|
comment string
|
|
commented bool
|
|
multiline bool
|
|
include bool
|
|
omitempty bool
|
|
defaultValue string
|
|
}
|
|
|
|
type encOpts struct {
|
|
quoteMapKeys bool
|
|
arraysOneElementPerLine bool
|
|
}
|
|
|
|
var encOptsDefaults = encOpts{
|
|
quoteMapKeys: false,
|
|
}
|
|
|
|
type annotation struct {
|
|
tag string
|
|
comment string
|
|
commented string
|
|
multiline string
|
|
defaultValue string
|
|
}
|
|
|
|
var annotationDefault = annotation{
|
|
tag: tagFieldName,
|
|
comment: tagFieldComment,
|
|
commented: tagCommented,
|
|
multiline: tagMultiline,
|
|
defaultValue: tagDefault,
|
|
}
|
|
|
|
type marshalOrder int
|
|
|
|
// Orders the Encoder can write the fields to the output stream.
|
|
const (
|
|
// Sort fields alphabetically.
|
|
OrderAlphabetical marshalOrder = iota + 1
|
|
// Preserve the order the fields are encountered. For example, the order of fields in
|
|
// a struct.
|
|
OrderPreserve
|
|
)
|
|
|
|
var timeType = reflect.TypeOf(time.Time{})
|
|
var marshalerType = reflect.TypeOf(new(Marshaler)).Elem()
|
|
|
|
// Check if the given marshal type maps to a Tree primitive
|
|
func isPrimitive(mtype reflect.Type) bool {
|
|
switch mtype.Kind() {
|
|
case reflect.Ptr:
|
|
return isPrimitive(mtype.Elem())
|
|
case reflect.Bool:
|
|
return true
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
return true
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
|
return true
|
|
case reflect.Float32, reflect.Float64:
|
|
return true
|
|
case reflect.String:
|
|
return true
|
|
case reflect.Struct:
|
|
return mtype == timeType || isCustomMarshaler(mtype)
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
// Check if the given marshal type maps to a Tree slice
|
|
func isTreeSlice(mtype reflect.Type) bool {
|
|
switch mtype.Kind() {
|
|
case reflect.Slice:
|
|
return !isOtherSlice(mtype)
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
// Check if the given marshal type maps to a non-Tree slice
|
|
func isOtherSlice(mtype reflect.Type) bool {
|
|
switch mtype.Kind() {
|
|
case reflect.Ptr:
|
|
return isOtherSlice(mtype.Elem())
|
|
case reflect.Slice:
|
|
return isPrimitive(mtype.Elem()) || isOtherSlice(mtype.Elem())
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
// Check if the given marshal type maps to a Tree
|
|
func isTree(mtype reflect.Type) bool {
|
|
switch mtype.Kind() {
|
|
case reflect.Map:
|
|
return true
|
|
case reflect.Struct:
|
|
return !isPrimitive(mtype)
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func isCustomMarshaler(mtype reflect.Type) bool {
|
|
return mtype.Implements(marshalerType)
|
|
}
|
|
|
|
func callCustomMarshaler(mval reflect.Value) ([]byte, error) {
|
|
return mval.Interface().(Marshaler).MarshalTOML()
|
|
}
|
|
|
|
// Marshaler is the interface implemented by types that
|
|
// can marshal themselves into valid TOML.
|
|
type Marshaler interface {
|
|
MarshalTOML() ([]byte, error)
|
|
}
|
|
|
|
/*
|
|
Marshal returns the TOML encoding of v. Behavior is similar to the Go json
|
|
encoder, except that there is no concept of a Marshaler interface or MarshalTOML
|
|
function for sub-structs, and currently only definite types can be marshaled
|
|
(i.e. no `interface{}`).
|
|
|
|
The following struct annotations are supported:
|
|
|
|
toml:"Field" Overrides the field's name to output.
|
|
omitempty When set, empty values and groups are not emitted.
|
|
comment:"comment" Emits a # comment on the same line. This supports new lines.
|
|
commented:"true" Emits the value as commented.
|
|
|
|
Note that pointers are automatically assigned the "omitempty" option, as TOML
|
|
explicitly does not handle null values (saying instead the label should be
|
|
dropped).
|
|
|
|
Tree structural types and corresponding marshal types:
|
|
|
|
*Tree (*)struct, (*)map[string]interface{}
|
|
[]*Tree (*)[](*)struct, (*)[](*)map[string]interface{}
|
|
[]interface{} (as interface{}) (*)[]primitive, (*)[]([]interface{})
|
|
interface{} (*)primitive
|
|
|
|
Tree primitive types and corresponding marshal types:
|
|
|
|
uint64 uint, uint8-uint64, pointers to same
|
|
int64 int, int8-uint64, pointers to same
|
|
float64 float32, float64, pointers to same
|
|
string string, pointers to same
|
|
bool bool, pointers to same
|
|
time.Time time.Time{}, pointers to same
|
|
|
|
For additional flexibility, use the Encoder API.
|
|
*/
|
|
func Marshal(v interface{}) ([]byte, error) {
|
|
return NewEncoder(nil).marshal(v)
|
|
}
|
|
|
|
// Encoder writes TOML values to an output stream.
|
|
type Encoder struct {
|
|
w io.Writer
|
|
encOpts
|
|
annotation
|
|
line int
|
|
col int
|
|
order marshalOrder
|
|
}
|
|
|
|
// NewEncoder returns a new encoder that writes to w.
|
|
func NewEncoder(w io.Writer) *Encoder {
|
|
return &Encoder{
|
|
w: w,
|
|
encOpts: encOptsDefaults,
|
|
annotation: annotationDefault,
|
|
line: 0,
|
|
col: 1,
|
|
order: OrderAlphabetical,
|
|
}
|
|
}
|
|
|
|
// Encode writes the TOML encoding of v to the stream.
|
|
//
|
|
// See the documentation for Marshal for details.
|
|
func (e *Encoder) Encode(v interface{}) error {
|
|
b, err := e.marshal(v)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if _, err := e.w.Write(b); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// QuoteMapKeys sets up the encoder to encode
|
|
// maps with string type keys with quoted TOML keys.
|
|
//
|
|
// This relieves the character limitations on map keys.
|
|
func (e *Encoder) QuoteMapKeys(v bool) *Encoder {
|
|
e.quoteMapKeys = v
|
|
return e
|
|
}
|
|
|
|
// ArraysWithOneElementPerLine sets up the encoder to encode arrays
|
|
// with more than one element on multiple lines instead of one.
|
|
//
|
|
// For example:
|
|
//
|
|
// A = [1,2,3]
|
|
//
|
|
// Becomes
|
|
//
|
|
// A = [
|
|
// 1,
|
|
// 2,
|
|
// 3,
|
|
// ]
|
|
func (e *Encoder) ArraysWithOneElementPerLine(v bool) *Encoder {
|
|
e.arraysOneElementPerLine = v
|
|
return e
|
|
}
|
|
|
|
// Order allows to change in which order fields will be written to the output stream.
|
|
func (e *Encoder) Order(ord marshalOrder) *Encoder {
|
|
e.order = ord
|
|
return e
|
|
}
|
|
|
|
// SetTagName allows changing default tag "toml"
|
|
func (e *Encoder) SetTagName(v string) *Encoder {
|
|
e.tag = v
|
|
return e
|
|
}
|
|
|
|
// SetTagComment allows changing default tag "comment"
|
|
func (e *Encoder) SetTagComment(v string) *Encoder {
|
|
e.comment = v
|
|
return e
|
|
}
|
|
|
|
// SetTagCommented allows changing default tag "commented"
|
|
func (e *Encoder) SetTagCommented(v string) *Encoder {
|
|
e.commented = v
|
|
return e
|
|
}
|
|
|
|
// SetTagMultiline allows changing default tag "multiline"
|
|
func (e *Encoder) SetTagMultiline(v string) *Encoder {
|
|
e.multiline = v
|
|
return e
|
|
}
|
|
|
|
func (e *Encoder) marshal(v interface{}) ([]byte, error) {
|
|
mtype := reflect.TypeOf(v)
|
|
|
|
switch mtype.Kind() {
|
|
case reflect.Struct, reflect.Map:
|
|
case reflect.Ptr:
|
|
if mtype.Elem().Kind() != reflect.Struct {
|
|
return []byte{}, errors.New("Only pointer to struct can be marshaled to TOML")
|
|
}
|
|
default:
|
|
return []byte{}, errors.New("Only a struct or map can be marshaled to TOML")
|
|
}
|
|
|
|
sval := reflect.ValueOf(v)
|
|
if isCustomMarshaler(mtype) {
|
|
return callCustomMarshaler(sval)
|
|
}
|
|
t, err := e.valueToTree(mtype, sval)
|
|
if err != nil {
|
|
return []byte{}, err
|
|
}
|
|
|
|
var buf bytes.Buffer
|
|
_, err = t.writeToOrdered(&buf, "", "", 0, e.arraysOneElementPerLine, e.order)
|
|
|
|
return buf.Bytes(), err
|
|
}
|
|
|
|
// Create next tree with a position based on Encoder.line
|
|
func (e *Encoder) nextTree() *Tree {
|
|
return newTreeWithPosition(Position{Line: e.line, Col: 1})
|
|
}
|
|
|
|
// Convert given marshal struct or map value to toml tree
|
|
func (e *Encoder) valueToTree(mtype reflect.Type, mval reflect.Value) (*Tree, error) {
|
|
if mtype.Kind() == reflect.Ptr {
|
|
return e.valueToTree(mtype.Elem(), mval.Elem())
|
|
}
|
|
tval := e.nextTree()
|
|
switch mtype.Kind() {
|
|
case reflect.Struct:
|
|
for i := 0; i < mtype.NumField(); i++ {
|
|
mtypef, mvalf := mtype.Field(i), mval.Field(i)
|
|
opts := tomlOptions(mtypef, e.annotation)
|
|
if opts.include && (!opts.omitempty || !isZero(mvalf)) {
|
|
val, err := e.valueToToml(mtypef.Type, mvalf)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
tval.SetWithOptions(opts.name, SetOptions{
|
|
Comment: opts.comment,
|
|
Commented: opts.commented,
|
|
Multiline: opts.multiline,
|
|
}, val)
|
|
}
|
|
}
|
|
case reflect.Map:
|
|
keys := mval.MapKeys()
|
|
if e.order == OrderPreserve && len(keys) > 0 {
|
|
// Sorting []reflect.Value is not straight forward.
|
|
//
|
|
// OrderPreserve will support deterministic results when string is used
|
|
// as the key to maps.
|
|
typ := keys[0].Type()
|
|
kind := keys[0].Kind()
|
|
if kind == reflect.String {
|
|
ikeys := make([]string, len(keys))
|
|
for i := range keys {
|
|
ikeys[i] = keys[i].Interface().(string)
|
|
}
|
|
sort.Strings(ikeys)
|
|
for i := range ikeys {
|
|
keys[i] = reflect.ValueOf(ikeys[i]).Convert(typ)
|
|
}
|
|
}
|
|
}
|
|
for _, key := range keys {
|
|
mvalf := mval.MapIndex(key)
|
|
val, err := e.valueToToml(mtype.Elem(), mvalf)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if e.quoteMapKeys {
|
|
keyStr, err := tomlValueStringRepresentation(key.String(), "", e.arraysOneElementPerLine)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
tval.SetPath([]string{keyStr}, val)
|
|
} else {
|
|
tval.Set(key.String(), val)
|
|
}
|
|
}
|
|
}
|
|
return tval, nil
|
|
}
|
|
|
|
// Convert given marshal slice to slice of Toml trees
|
|
func (e *Encoder) valueToTreeSlice(mtype reflect.Type, mval reflect.Value) ([]*Tree, error) {
|
|
tval := make([]*Tree, mval.Len(), mval.Len())
|
|
for i := 0; i < mval.Len(); i++ {
|
|
val, err := e.valueToTree(mtype.Elem(), mval.Index(i))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
tval[i] = val
|
|
}
|
|
return tval, nil
|
|
}
|
|
|
|
// Convert given marshal slice to slice of toml values
|
|
func (e *Encoder) valueToOtherSlice(mtype reflect.Type, mval reflect.Value) (interface{}, error) {
|
|
tval := make([]interface{}, mval.Len(), mval.Len())
|
|
for i := 0; i < mval.Len(); i++ {
|
|
val, err := e.valueToToml(mtype.Elem(), mval.Index(i))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
tval[i] = val
|
|
}
|
|
return tval, nil
|
|
}
|
|
|
|
// Convert given marshal value to toml value
|
|
func (e *Encoder) valueToToml(mtype reflect.Type, mval reflect.Value) (interface{}, error) {
|
|
e.line++
|
|
if mtype.Kind() == reflect.Ptr {
|
|
return e.valueToToml(mtype.Elem(), mval.Elem())
|
|
}
|
|
switch {
|
|
case isCustomMarshaler(mtype):
|
|
return callCustomMarshaler(mval)
|
|
case isTree(mtype):
|
|
return e.valueToTree(mtype, mval)
|
|
case isTreeSlice(mtype):
|
|
return e.valueToTreeSlice(mtype, mval)
|
|
case isOtherSlice(mtype):
|
|
return e.valueToOtherSlice(mtype, mval)
|
|
default:
|
|
switch mtype.Kind() {
|
|
case reflect.Bool:
|
|
return mval.Bool(), nil
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
if mtype.Kind() == reflect.Int64 && mtype == reflect.TypeOf(time.Duration(1)) {
|
|
return fmt.Sprint(mval), nil
|
|
}
|
|
return mval.Int(), nil
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
|
return mval.Uint(), nil
|
|
case reflect.Float32, reflect.Float64:
|
|
return mval.Float(), nil
|
|
case reflect.String:
|
|
return mval.String(), nil
|
|
case reflect.Struct:
|
|
return mval.Interface().(time.Time), nil
|
|
default:
|
|
return nil, fmt.Errorf("Marshal can't handle %v(%v)", mtype, mtype.Kind())
|
|
}
|
|
}
|
|
}
|
|
|
|
// Unmarshal attempts to unmarshal the Tree into a Go struct pointed by v.
|
|
// Neither Unmarshaler interfaces nor UnmarshalTOML functions are supported for
|
|
// sub-structs, and only definite types can be unmarshaled.
|
|
func (t *Tree) Unmarshal(v interface{}) error {
|
|
d := Decoder{tval: t, tagName: tagFieldName}
|
|
return d.unmarshal(v)
|
|
}
|
|
|
|
// Marshal returns the TOML encoding of Tree.
|
|
// See Marshal() documentation for types mapping table.
|
|
func (t *Tree) Marshal() ([]byte, error) {
|
|
var buf bytes.Buffer
|
|
err := NewEncoder(&buf).Encode(t)
|
|
return buf.Bytes(), err
|
|
}
|
|
|
|
// Unmarshal parses the TOML-encoded data and stores the result in the value
|
|
// pointed to by v. Behavior is similar to the Go json encoder, except that there
|
|
// is no concept of an Unmarshaler interface or UnmarshalTOML function for
|
|
// sub-structs, and currently only definite types can be unmarshaled to (i.e. no
|
|
// `interface{}`).
|
|
//
|
|
// The following struct annotations are supported:
|
|
//
|
|
// toml:"Field" Overrides the field's name to map to.
|
|
// default:"foo" Provides a default value.
|
|
//
|
|
// For default values, only fields of the following types are supported:
|
|
// * string
|
|
// * bool
|
|
// * int
|
|
// * int64
|
|
// * float64
|
|
//
|
|
// See Marshal() documentation for types mapping table.
|
|
func Unmarshal(data []byte, v interface{}) error {
|
|
t, err := LoadReader(bytes.NewReader(data))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return t.Unmarshal(v)
|
|
}
|
|
|
|
// Decoder reads and decodes TOML values from an input stream.
|
|
type Decoder struct {
|
|
r io.Reader
|
|
tval *Tree
|
|
encOpts
|
|
tagName string
|
|
}
|
|
|
|
// NewDecoder returns a new decoder that reads from r.
|
|
func NewDecoder(r io.Reader) *Decoder {
|
|
return &Decoder{
|
|
r: r,
|
|
encOpts: encOptsDefaults,
|
|
tagName: tagFieldName,
|
|
}
|
|
}
|
|
|
|
// Decode reads a TOML-encoded value from it's input
|
|
// and unmarshals it in the value pointed at by v.
|
|
//
|
|
// See the documentation for Marshal for details.
|
|
func (d *Decoder) Decode(v interface{}) error {
|
|
var err error
|
|
d.tval, err = LoadReader(d.r)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return d.unmarshal(v)
|
|
}
|
|
|
|
// SetTagName allows changing default tag "toml"
|
|
func (d *Decoder) SetTagName(v string) *Decoder {
|
|
d.tagName = v
|
|
return d
|
|
}
|
|
|
|
func (d *Decoder) unmarshal(v interface{}) error {
|
|
mtype := reflect.TypeOf(v)
|
|
if mtype.Kind() != reflect.Ptr {
|
|
return errors.New("only a pointer to struct or map can be unmarshaled from TOML")
|
|
}
|
|
|
|
elem := mtype.Elem()
|
|
|
|
switch elem.Kind() {
|
|
case reflect.Struct, reflect.Map:
|
|
default:
|
|
return errors.New("only a pointer to struct or map can be unmarshaled from TOML")
|
|
}
|
|
|
|
sval, err := d.valueFromTree(elem, d.tval)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
reflect.ValueOf(v).Elem().Set(sval)
|
|
return nil
|
|
}
|
|
|
|
// Convert toml tree to marshal struct or map, using marshal type
|
|
func (d *Decoder) valueFromTree(mtype reflect.Type, tval *Tree) (reflect.Value, error) {
|
|
if mtype.Kind() == reflect.Ptr {
|
|
return d.unwrapPointer(mtype, tval)
|
|
}
|
|
var mval reflect.Value
|
|
switch mtype.Kind() {
|
|
case reflect.Struct:
|
|
mval = reflect.New(mtype).Elem()
|
|
for i := 0; i < mtype.NumField(); i++ {
|
|
mtypef := mtype.Field(i)
|
|
an := annotation{tag: d.tagName}
|
|
opts := tomlOptions(mtypef, an)
|
|
if opts.include {
|
|
baseKey := opts.name
|
|
keysToTry := []string{
|
|
baseKey,
|
|
strings.ToLower(baseKey),
|
|
strings.ToTitle(baseKey),
|
|
strings.ToLower(string(baseKey[0])) + baseKey[1:],
|
|
}
|
|
|
|
found := false
|
|
for _, key := range keysToTry {
|
|
exists := tval.Has(key)
|
|
if !exists {
|
|
continue
|
|
}
|
|
val := tval.Get(key)
|
|
mvalf, err := d.valueFromToml(mtypef.Type, val)
|
|
if err != nil {
|
|
return mval, formatError(err, tval.GetPosition(key))
|
|
}
|
|
mval.Field(i).Set(mvalf)
|
|
found = true
|
|
break
|
|
}
|
|
|
|
if !found && opts.defaultValue != "" {
|
|
mvalf := mval.Field(i)
|
|
var val interface{}
|
|
var err error
|
|
switch mvalf.Kind() {
|
|
case reflect.Bool:
|
|
val, err = strconv.ParseBool(opts.defaultValue)
|
|
if err != nil {
|
|
return mval.Field(i), err
|
|
}
|
|
case reflect.Int:
|
|
val, err = strconv.Atoi(opts.defaultValue)
|
|
if err != nil {
|
|
return mval.Field(i), err
|
|
}
|
|
case reflect.String:
|
|
val = opts.defaultValue
|
|
case reflect.Int64:
|
|
val, err = strconv.ParseInt(opts.defaultValue, 10, 64)
|
|
if err != nil {
|
|
return mval.Field(i), err
|
|
}
|
|
case reflect.Float64:
|
|
val, err = strconv.ParseFloat(opts.defaultValue, 64)
|
|
if err != nil {
|
|
return mval.Field(i), err
|
|
}
|
|
default:
|
|
return mval.Field(i), fmt.Errorf("unsuported field type for default option")
|
|
}
|
|
mval.Field(i).Set(reflect.ValueOf(val))
|
|
}
|
|
}
|
|
}
|
|
case reflect.Map:
|
|
mval = reflect.MakeMap(mtype)
|
|
for _, key := range tval.Keys() {
|
|
// TODO: path splits key
|
|
val := tval.GetPath([]string{key})
|
|
mvalf, err := d.valueFromToml(mtype.Elem(), val)
|
|
if err != nil {
|
|
return mval, formatError(err, tval.GetPosition(key))
|
|
}
|
|
mval.SetMapIndex(reflect.ValueOf(key).Convert(mtype.Key()), mvalf)
|
|
}
|
|
}
|
|
return mval, nil
|
|
}
|
|
|
|
// Convert toml value to marshal struct/map slice, using marshal type
|
|
func (d *Decoder) valueFromTreeSlice(mtype reflect.Type, tval []*Tree) (reflect.Value, error) {
|
|
mval := reflect.MakeSlice(mtype, len(tval), len(tval))
|
|
for i := 0; i < len(tval); i++ {
|
|
val, err := d.valueFromTree(mtype.Elem(), tval[i])
|
|
if err != nil {
|
|
return mval, err
|
|
}
|
|
mval.Index(i).Set(val)
|
|
}
|
|
return mval, nil
|
|
}
|
|
|
|
// Convert toml value to marshal primitive slice, using marshal type
|
|
func (d *Decoder) valueFromOtherSlice(mtype reflect.Type, tval []interface{}) (reflect.Value, error) {
|
|
mval := reflect.MakeSlice(mtype, len(tval), len(tval))
|
|
for i := 0; i < len(tval); i++ {
|
|
val, err := d.valueFromToml(mtype.Elem(), tval[i])
|
|
if err != nil {
|
|
return mval, err
|
|
}
|
|
mval.Index(i).Set(val)
|
|
}
|
|
return mval, nil
|
|
}
|
|
|
|
// Convert toml value to marshal value, using marshal type
|
|
func (d *Decoder) valueFromToml(mtype reflect.Type, tval interface{}) (reflect.Value, error) {
|
|
if mtype.Kind() == reflect.Ptr {
|
|
return d.unwrapPointer(mtype, tval)
|
|
}
|
|
|
|
switch t := tval.(type) {
|
|
case *Tree:
|
|
if isTree(mtype) {
|
|
return d.valueFromTree(mtype, t)
|
|
}
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to a tree", tval, tval)
|
|
case []*Tree:
|
|
if isTreeSlice(mtype) {
|
|
return d.valueFromTreeSlice(mtype, t)
|
|
}
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to trees", tval, tval)
|
|
case []interface{}:
|
|
if isOtherSlice(mtype) {
|
|
return d.valueFromOtherSlice(mtype, t)
|
|
}
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to a slice", tval, tval)
|
|
default:
|
|
switch mtype.Kind() {
|
|
case reflect.Bool, reflect.Struct:
|
|
val := reflect.ValueOf(tval)
|
|
// if this passes for when mtype is reflect.Struct, tval is a time.Time
|
|
if !val.Type().ConvertibleTo(mtype) {
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
|
|
}
|
|
|
|
return val.Convert(mtype), nil
|
|
case reflect.String:
|
|
val := reflect.ValueOf(tval)
|
|
// stupidly, int64 is convertible to string. So special case this.
|
|
if !val.Type().ConvertibleTo(mtype) || val.Kind() == reflect.Int64 {
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
|
|
}
|
|
|
|
return val.Convert(mtype), nil
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
val := reflect.ValueOf(tval)
|
|
if mtype.Kind() == reflect.Int64 && mtype == reflect.TypeOf(time.Duration(1)) && val.Kind() == reflect.String {
|
|
d, err := time.ParseDuration(val.String())
|
|
if err != nil {
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v. %s", tval, tval, mtype.String(), err)
|
|
}
|
|
return reflect.ValueOf(d), nil
|
|
}
|
|
if !val.Type().ConvertibleTo(mtype) {
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
|
|
}
|
|
if reflect.Indirect(reflect.New(mtype)).OverflowInt(val.Convert(mtype).Int()) {
|
|
return reflect.ValueOf(nil), fmt.Errorf("%v(%T) would overflow %v", tval, tval, mtype.String())
|
|
}
|
|
|
|
return val.Convert(mtype), nil
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
val := reflect.ValueOf(tval)
|
|
if !val.Type().ConvertibleTo(mtype) {
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
|
|
}
|
|
|
|
if val.Convert(reflect.TypeOf(int(1))).Int() < 0 {
|
|
return reflect.ValueOf(nil), fmt.Errorf("%v(%T) is negative so does not fit in %v", tval, tval, mtype.String())
|
|
}
|
|
if reflect.Indirect(reflect.New(mtype)).OverflowUint(uint64(val.Convert(mtype).Uint())) {
|
|
return reflect.ValueOf(nil), fmt.Errorf("%v(%T) would overflow %v", tval, tval, mtype.String())
|
|
}
|
|
|
|
return val.Convert(mtype), nil
|
|
case reflect.Float32, reflect.Float64:
|
|
val := reflect.ValueOf(tval)
|
|
if !val.Type().ConvertibleTo(mtype) {
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
|
|
}
|
|
if reflect.Indirect(reflect.New(mtype)).OverflowFloat(val.Convert(mtype).Float()) {
|
|
return reflect.ValueOf(nil), fmt.Errorf("%v(%T) would overflow %v", tval, tval, mtype.String())
|
|
}
|
|
|
|
return val.Convert(mtype), nil
|
|
default:
|
|
return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v(%v)", tval, tval, mtype, mtype.Kind())
|
|
}
|
|
}
|
|
}
|
|
|
|
func (d *Decoder) unwrapPointer(mtype reflect.Type, tval interface{}) (reflect.Value, error) {
|
|
val, err := d.valueFromToml(mtype.Elem(), tval)
|
|
if err != nil {
|
|
return reflect.ValueOf(nil), err
|
|
}
|
|
mval := reflect.New(mtype.Elem())
|
|
mval.Elem().Set(val)
|
|
return mval, nil
|
|
}
|
|
|
|
func tomlOptions(vf reflect.StructField, an annotation) tomlOpts {
|
|
tag := vf.Tag.Get(an.tag)
|
|
parse := strings.Split(tag, ",")
|
|
var comment string
|
|
if c := vf.Tag.Get(an.comment); c != "" {
|
|
comment = c
|
|
}
|
|
commented, _ := strconv.ParseBool(vf.Tag.Get(an.commented))
|
|
multiline, _ := strconv.ParseBool(vf.Tag.Get(an.multiline))
|
|
defaultValue := vf.Tag.Get(tagDefault)
|
|
result := tomlOpts{
|
|
name: vf.Name,
|
|
comment: comment,
|
|
commented: commented,
|
|
multiline: multiline,
|
|
include: true,
|
|
omitempty: false,
|
|
defaultValue: defaultValue,
|
|
}
|
|
if parse[0] != "" {
|
|
if parse[0] == "-" && len(parse) == 1 {
|
|
result.include = false
|
|
} else {
|
|
result.name = strings.Trim(parse[0], " ")
|
|
}
|
|
}
|
|
if vf.PkgPath != "" {
|
|
result.include = false
|
|
}
|
|
if len(parse) > 1 && strings.Trim(parse[1], " ") == "omitempty" {
|
|
result.omitempty = true
|
|
}
|
|
if vf.Type.Kind() == reflect.Ptr {
|
|
result.omitempty = true
|
|
}
|
|
return result
|
|
}
|
|
|
|
func isZero(val reflect.Value) bool {
|
|
switch val.Type().Kind() {
|
|
case reflect.Map:
|
|
fallthrough
|
|
case reflect.Array:
|
|
fallthrough
|
|
case reflect.Slice:
|
|
return val.Len() == 0
|
|
default:
|
|
return reflect.DeepEqual(val.Interface(), reflect.Zero(val.Type()).Interface())
|
|
}
|
|
}
|
|
|
|
func formatError(err error, pos Position) error {
|
|
if err.Error()[0] == '(' { // Error already contains position information
|
|
return err
|
|
}
|
|
return fmt.Errorf("%s: %s", pos, err)
|
|
}
|