diff options
Diffstat (limited to 'vendor/github.com/BurntSushi')
20 files changed, 1240 insertions, 755 deletions
diff --git a/vendor/github.com/BurntSushi/toml/.gitignore b/vendor/github.com/BurntSushi/toml/.gitignore index 0cd380037..cd11be965 100644 --- a/vendor/github.com/BurntSushi/toml/.gitignore +++ b/vendor/github.com/BurntSushi/toml/.gitignore @@ -1,5 +1,2 @@ -TAGS -tags -.*.swp -tomlcheck/tomlcheck toml.test +/toml-test diff --git a/vendor/github.com/BurntSushi/toml/.travis.yml b/vendor/github.com/BurntSushi/toml/.travis.yml deleted file mode 100644 index 8b8afc4f0..000000000 --- a/vendor/github.com/BurntSushi/toml/.travis.yml +++ /dev/null @@ -1,15 +0,0 @@ -language: go -go: - - 1.1 - - 1.2 - - 1.3 - - 1.4 - - 1.5 - - 1.6 - - tip -install: - - go install ./... - - go get github.com/BurntSushi/toml-test -script: - - export PATH="$PATH:$HOME/gopath/bin" - - make test diff --git a/vendor/github.com/BurntSushi/toml/COMPATIBLE b/vendor/github.com/BurntSushi/toml/COMPATIBLE index 6efcfd0ce..f621b0119 100644 --- a/vendor/github.com/BurntSushi/toml/COMPATIBLE +++ b/vendor/github.com/BurntSushi/toml/COMPATIBLE @@ -1,3 +1 @@ -Compatible with TOML version -[v0.4.0](https://github.com/toml-lang/toml/blob/v0.4.0/versions/en/toml-v0.4.0.md) - +Compatible with TOML version [v1.0.0](https://toml.io/en/v1.0.0). diff --git a/vendor/github.com/BurntSushi/toml/Makefile b/vendor/github.com/BurntSushi/toml/Makefile deleted file mode 100644 index 3600848d3..000000000 --- a/vendor/github.com/BurntSushi/toml/Makefile +++ /dev/null @@ -1,19 +0,0 @@ -install: - go install ./... - -test: install - go test -v - toml-test toml-test-decoder - toml-test -encoder toml-test-encoder - -fmt: - gofmt -w *.go */*.go - colcheck *.go */*.go - -tags: - find ./ -name '*.go' -print0 | xargs -0 gotags > TAGS - -push: - git push origin master - git push github master - diff --git a/vendor/github.com/BurntSushi/toml/README.md b/vendor/github.com/BurntSushi/toml/README.md index 7c1b37ecc..64410cf75 100644 --- a/vendor/github.com/BurntSushi/toml/README.md +++ b/vendor/github.com/BurntSushi/toml/README.md @@ -6,27 +6,22 @@ packages. This package also supports the `encoding.TextUnmarshaler` and `encoding.TextMarshaler` interfaces so that you can define custom data representations. (There is an example of this below.) -Spec: https://github.com/toml-lang/toml +Compatible with TOML version [v1.0.0](https://toml.io/en/v1.0.0). -Compatible with TOML version -[v0.4.0](https://github.com/toml-lang/toml/blob/master/versions/en/toml-v0.4.0.md) +Documentation: https://godocs.io/github.com/BurntSushi/toml -Documentation: https://godoc.org/github.com/BurntSushi/toml +See the [releases page](https://github.com/BurntSushi/toml/releases) for a +changelog; this information is also in the git tag annotations (e.g. `git show +v0.4.0`). -Installation: +This library requires Go 1.13 or newer; install it with: -```bash -go get github.com/BurntSushi/toml -``` - -Try the toml validator: + $ go get github.com/BurntSushi/toml -```bash -go get github.com/BurntSushi/toml/cmd/tomlv -tomlv some-toml-file.toml -``` +It also comes with a TOML validator CLI tool: -[](https://travis-ci.org/BurntSushi/toml) [](https://godoc.org/github.com/BurntSushi/toml) + $ go get github.com/BurntSushi/toml/cmd/tomlv + $ tomlv some-toml-file.toml ### Testing @@ -36,8 +31,8 @@ and the encoder. ### Examples -This package works similarly to how the Go standard library handles `XML` -and `JSON`. Namely, data is loaded into Go values via reflection. +This package works similarly to how the Go standard library handles XML and +JSON. Namely, data is loaded into Go values via reflection. For the simplest example, consider some TOML file as just a list of keys and values: @@ -54,11 +49,11 @@ Which could be defined in Go as: ```go type Config struct { - Age int - Cats []string - Pi float64 - Perfection []int - DOB time.Time // requires `import time` + Age int + Cats []string + Pi float64 + Perfection []int + DOB time.Time // requires `import time` } ``` @@ -84,6 +79,9 @@ type TOML struct { } ``` +Beware that like other most other decoders **only exported fields** are +considered when encoding and decoding; private fields are silently ignored. + ### Using the `encoding.TextUnmarshaler` interface Here's an example that automatically parses duration strings into @@ -103,19 +101,19 @@ Which can be decoded with: ```go type song struct { - Name string - Duration duration + Name string + Duration duration } type songs struct { - Song []song + Song []song } var favorites songs if _, err := toml.Decode(blob, &favorites); err != nil { - log.Fatal(err) + log.Fatal(err) } for _, s := range favorites.Song { - fmt.Printf("%s (%s)\n", s.Name, s.Duration) + fmt.Printf("%s (%s)\n", s.Name, s.Duration) } ``` @@ -134,6 +132,9 @@ func (d *duration) UnmarshalText(text []byte) error { } ``` +To target TOML specifically you can implement `UnmarshalTOML` TOML interface in +a similar way. + ### More complex usage Here's an example of how to load the example from the official spec page: @@ -180,23 +181,23 @@ And the corresponding Go types are: ```go type tomlConfig struct { - Title string - Owner ownerInfo - DB database `toml:"database"` + Title string + Owner ownerInfo + DB database `toml:"database"` Servers map[string]server Clients clients } type ownerInfo struct { Name string - Org string `toml:"organization"` - Bio string - DOB time.Time + Org string `toml:"organization"` + Bio string + DOB time.Time } type database struct { - Server string - Ports []int + Server string + Ports []int ConnMax int `toml:"connection_max"` Enabled bool } @@ -207,7 +208,7 @@ type server struct { } type clients struct { - Data [][]interface{} + Data [][]interface{} Hosts []string } ``` @@ -216,3 +217,4 @@ Note that a case insensitive match will be tried if an exact match can't be found. A working example of the above can be found in `_examples/example.{go,toml}`. + diff --git a/vendor/github.com/BurntSushi/toml/decode.go b/vendor/github.com/BurntSushi/toml/decode.go index b0fd51d5b..d3d3b8397 100644 --- a/vendor/github.com/BurntSushi/toml/decode.go +++ b/vendor/github.com/BurntSushi/toml/decode.go @@ -1,19 +1,17 @@ package toml import ( + "encoding" "fmt" "io" "io/ioutil" "math" + "os" "reflect" "strings" "time" ) -func e(format string, args ...interface{}) error { - return fmt.Errorf("toml: "+format, args...) -} - // Unmarshaler is the interface implemented by objects that can unmarshal a // TOML description of themselves. type Unmarshaler interface { @@ -27,30 +25,21 @@ func Unmarshal(p []byte, v interface{}) error { } // Primitive is a TOML value that hasn't been decoded into a Go value. -// When using the various `Decode*` functions, the type `Primitive` may -// be given to any value, and its decoding will be delayed. // -// A `Primitive` value can be decoded using the `PrimitiveDecode` function. +// This type can be used for any value, which will cause decoding to be delayed. +// You can use the PrimitiveDecode() function to "manually" decode these values. // -// The underlying representation of a `Primitive` value is subject to change. -// Do not rely on it. +// NOTE: The underlying representation of a `Primitive` value is subject to +// change. Do not rely on it. // -// N.B. Primitive values are still parsed, so using them will only avoid -// the overhead of reflection. They can be useful when you don't know the -// exact type of TOML data until run time. +// NOTE: Primitive values are still parsed, so using them will only avoid the +// overhead of reflection. They can be useful when you don't know the exact type +// of TOML data until runtime. type Primitive struct { undecoded interface{} context Key } -// DEPRECATED! -// -// Use MetaData.PrimitiveDecode instead. -func PrimitiveDecode(primValue Primitive, v interface{}) error { - md := MetaData{decoded: make(map[string]bool)} - return md.unify(primValue.undecoded, rvalue(v)) -} - // PrimitiveDecode is just like the other `Decode*` functions, except it // decodes a TOML value that has already been parsed. Valid primitive values // can *only* be obtained from values filled by the decoder functions, @@ -68,43 +57,51 @@ func (md *MetaData) PrimitiveDecode(primValue Primitive, v interface{}) error { return md.unify(primValue.undecoded, rvalue(v)) } -// Decode will decode the contents of `data` in TOML format into a pointer -// `v`. +// Decoder decodes TOML data. // -// TOML hashes correspond to Go structs or maps. (Dealer's choice. They can be -// used interchangeably.) +// TOML tables correspond to Go structs or maps (dealer's choice – they can be +// used interchangeably). // -// TOML arrays of tables correspond to either a slice of structs or a slice -// of maps. +// TOML table arrays correspond to either a slice of structs or a slice of maps. // -// TOML datetimes correspond to Go `time.Time` values. +// TOML datetimes correspond to Go time.Time values. Local datetimes are parsed +// in the local timezone. // -// All other TOML types (float, string, int, bool and array) correspond -// to the obvious Go types. +// All other TOML types (float, string, int, bool and array) correspond to the +// obvious Go types. // -// An exception to the above rules is if a type implements the -// encoding.TextUnmarshaler interface. In this case, any primitive TOML value -// (floats, strings, integers, booleans and datetimes) will be converted to -// a byte string and given to the value's UnmarshalText method. See the -// Unmarshaler example for a demonstration with time duration strings. +// An exception to the above rules is if a type implements the TextUnmarshaler +// interface, in which case any primitive TOML value (floats, strings, integers, +// booleans, datetimes) will be converted to a []byte and given to the value's +// UnmarshalText method. See the Unmarshaler example for a demonstration with +// time duration strings. // // Key mapping // -// TOML keys can map to either keys in a Go map or field names in a Go -// struct. The special `toml` struct tag may be used to map TOML keys to -// struct fields that don't match the key name exactly. (See the example.) -// A case insensitive match to struct names will be tried if an exact match -// can't be found. +// TOML keys can map to either keys in a Go map or field names in a Go struct. +// The special `toml` struct tag can be used to map TOML keys to struct fields +// that don't match the key name exactly (see the example). A case insensitive +// match to struct names will be tried if an exact match can't be found. // -// The mapping between TOML values and Go values is loose. That is, there -// may exist TOML values that cannot be placed into your representation, and -// there may be parts of your representation that do not correspond to -// TOML values. This loose mapping can be made stricter by using the IsDefined -// and/or Undecoded methods on the MetaData returned. +// The mapping between TOML values and Go values is loose. That is, there may +// exist TOML values that cannot be placed into your representation, and there +// may be parts of your representation that do not correspond to TOML values. +// This loose mapping can be made stricter by using the IsDefined and/or +// Undecoded methods on the MetaData returned. // -// This decoder will not handle cyclic types. If a cyclic type is passed, -// `Decode` will not terminate. -func Decode(data string, v interface{}) (MetaData, error) { +// This decoder does not handle cyclic types. Decode will not terminate if a +// cyclic type is passed. +type Decoder struct { + r io.Reader +} + +// NewDecoder creates a new Decoder. +func NewDecoder(r io.Reader) *Decoder { + return &Decoder{r: r} +} + +// Decode TOML data in to the pointer `v`. +func (dec *Decoder) Decode(v interface{}) (MetaData, error) { rv := reflect.ValueOf(v) if rv.Kind() != reflect.Ptr { return MetaData{}, e("Decode of non-pointer %s", reflect.TypeOf(v)) @@ -112,7 +109,15 @@ func Decode(data string, v interface{}) (MetaData, error) { if rv.IsNil() { return MetaData{}, e("Decode of nil %s", reflect.TypeOf(v)) } - p, err := parse(data) + + // TODO: have parser should read from io.Reader? Or at the very least, make + // it read from []byte rather than string + data, err := ioutil.ReadAll(dec.r) + if err != nil { + return MetaData{}, err + } + + p, err := parse(string(data)) if err != nil { return MetaData{}, err } @@ -123,24 +128,22 @@ func Decode(data string, v interface{}) (MetaData, error) { return md, md.unify(p.mapping, indirect(rv)) } -// DecodeFile is just like Decode, except it will automatically read the -// contents of the file at `fpath` and decode it for you. -func DecodeFile(fpath string, v interface{}) (MetaData, error) { - bs, err := ioutil.ReadFile(fpath) - if err != nil { - return MetaData{}, err - } - return Decode(string(bs), v) +// Decode the TOML data in to the pointer v. +// +// See the documentation on Decoder for a description of the decoding process. +func Decode(data string, v interface{}) (MetaData, error) { + return NewDecoder(strings.NewReader(data)).Decode(v) } -// DecodeReader is just like Decode, except it will consume all bytes -// from the reader and decode it for you. -func DecodeReader(r io.Reader, v interface{}) (MetaData, error) { - bs, err := ioutil.ReadAll(r) +// DecodeFile is just like Decode, except it will automatically read the +// contents of the file at path and decode it for you. +func DecodeFile(path string, v interface{}) (MetaData, error) { + fp, err := os.Open(path) if err != nil { return MetaData{}, err } - return Decode(string(bs), v) + defer fp.Close() + return NewDecoder(fp).Decode(v) } // unify performs a sort of type unification based on the structure of `rv`, @@ -149,8 +152,8 @@ func DecodeReader(r io.Reader, v interface{}) (MetaData, error) { // Any type mismatch produces an error. Finding a type that we don't know // how to handle produces an unsupported type error. func (md *MetaData) unify(data interface{}, rv reflect.Value) error { - // Special case. Look for a `Primitive` value. + // TODO: #76 would make this superfluous after implemented. if rv.Type() == reflect.TypeOf((*Primitive)(nil)).Elem() { // Save the undecoded data and the key context into the primitive // value. @@ -170,25 +173,17 @@ func (md *MetaData) unify(data interface{}, rv reflect.Value) error { } } - // Special case. Handle time.Time values specifically. - // TODO: Remove this code when we decide to drop support for Go 1.1. - // This isn't necessary in Go 1.2 because time.Time satisfies the encoding - // interfaces. - if rv.Type().AssignableTo(rvalue(time.Time{}).Type()) { - return md.unifyDatetime(data, rv) - } - // Special case. Look for a value satisfying the TextUnmarshaler interface. - if v, ok := rv.Interface().(TextUnmarshaler); ok { + if v, ok := rv.Interface().(encoding.TextUnmarshaler); ok { return md.unifyText(data, v) } - // BUG(burntsushi) + // TODO: // The behavior here is incorrect whenever a Go type satisfies the - // encoding.TextUnmarshaler interface but also corresponds to a TOML - // hash or array. In particular, the unmarshaler should only be applied - // to primitive TOML values. But at this point, it will be applied to - // all kinds of values and produce an incorrect error whenever those values - // are hashes or arrays (including arrays of tables). + // encoding.TextUnmarshaler interface but also corresponds to a TOML hash or + // array. In particular, the unmarshaler should only be applied to primitive + // TOML values. But at this point, it will be applied to all kinds of values + // and produce an incorrect error whenever those values are hashes or arrays + // (including arrays of tables). k := rv.Kind() @@ -277,6 +272,12 @@ func (md *MetaData) unifyStruct(mapping interface{}, rv reflect.Value) error { } func (md *MetaData) unifyMap(mapping interface{}, rv reflect.Value) error { + if k := rv.Type().Key().Kind(); k != reflect.String { + return fmt.Errorf( + "toml: cannot decode to a map with non-string key type (%s in %q)", + k, rv.Type()) + } + tmap, ok := mapping.(map[string]interface{}) if !ok { if tmap == nil { @@ -312,10 +313,8 @@ func (md *MetaData) unifyArray(data interface{}, rv reflect.Value) error { } return badtype("slice", data) } - sliceLen := datav.Len() - if sliceLen != rv.Len() { - return e("expected array length %d; got TOML array of length %d", - rv.Len(), sliceLen) + if l := datav.Len(); l != rv.Len() { + return e("expected array length %d; got TOML array of length %d", rv.Len(), l) } return md.unifySliceArray(datav, rv) } @@ -337,11 +336,10 @@ func (md *MetaData) unifySlice(data interface{}, rv reflect.Value) error { } func (md *MetaData) unifySliceArray(data, rv reflect.Value) error { - sliceLen := data.Len() - for i := 0; i < sliceLen; i++ { - v := data.Index(i).Interface() - sliceval := indirect(rv.Index(i)) - if err := md.unify(v, sliceval); err != nil { + l := data.Len() + for i := 0; i < l; i++ { + err := md.unify(data.Index(i).Interface(), indirect(rv.Index(i))) + if err != nil { return err } } @@ -439,7 +437,7 @@ func (md *MetaData) unifyAnything(data interface{}, rv reflect.Value) error { return nil } -func (md *MetaData) unifyText(data interface{}, v TextUnmarshaler) error { +func (md *MetaData) unifyText(data interface{}, v encoding.TextUnmarshaler) error { var s string switch sdata := data.(type) { case TextMarshaler: @@ -482,7 +480,7 @@ func indirect(v reflect.Value) reflect.Value { if v.Kind() != reflect.Ptr { if v.CanSet() { pv := v.Addr() - if _, ok := pv.Interface().(TextUnmarshaler); ok { + if _, ok := pv.Interface().(encoding.TextUnmarshaler); ok { return pv } } @@ -498,12 +496,16 @@ func isUnifiable(rv reflect.Value) bool { if rv.CanSet() { return true } - if _, ok := rv.Interface().(TextUnmarshaler); ok { + if _, ok := rv.Interface().(encoding.TextUnmarshaler); ok { return true } return false } +func e(format string, args ...interface{}) error { + return fmt.Errorf("toml: "+format, args...) +} + func badtype(expected string, data interface{}) error { return e("cannot load TOML value of type %T into a Go %s", data, expected) } diff --git a/vendor/github.com/BurntSushi/toml/decode_go116.go b/vendor/github.com/BurntSushi/toml/decode_go116.go new file mode 100644 index 000000000..38aa75fdc --- /dev/null +++ b/vendor/github.com/BurntSushi/toml/decode_go116.go @@ -0,0 +1,18 @@ +// +build go1.16 + +package toml + +import ( + "io/fs" +) + +// DecodeFS is just like Decode, except it will automatically read the contents +// of the file at `path` from a fs.FS instance. +func DecodeFS(fsys fs.FS, path string, v interface{}) (MetaData, error) { + fp, err := fsys.Open(path) + if err != nil { + return MetaData{}, err + } + defer fp.Close() + return NewDecoder(fp).Decode(v) +} diff --git a/vendor/github.com/BurntSushi/toml/decode_meta.go b/vendor/github.com/BurntSushi/toml/decode_meta.go index b9914a679..ad8899c6c 100644 --- a/vendor/github.com/BurntSushi/toml/decode_meta.go +++ b/vendor/github.com/BurntSushi/toml/decode_meta.go @@ -2,9 +2,9 @@ package toml import "strings" -// MetaData allows access to meta information about TOML data that may not -// be inferrable via reflection. In particular, whether a key has been defined -// and the TOML type of a key. +// MetaData allows access to meta information about TOML data that may not be +// inferable via reflection. In particular, whether a key has been defined and +// the TOML type of a key. type MetaData struct { mapping map[string]interface{} types map[string]tomlType @@ -13,10 +13,11 @@ type MetaData struct { context Key // Used only during decoding. } -// IsDefined returns true if the key given exists in the TOML data. The key -// should be specified hierarchially. e.g., +// IsDefined reports if the key exists in the TOML data. +// +// The key should be specified hierarchically, for example to access the TOML +// key "a.b.c" you would use: // -// // access the TOML key 'a.b.c' // IsDefined("a", "b", "c") // // IsDefined will return false if an empty key given. Keys are case sensitive. @@ -41,8 +42,8 @@ func (md *MetaData) IsDefined(key ...string) bool { // Type returns a string representation of the type of the key specified. // -// Type will return the empty string if given an empty key or a key that -// does not exist. Keys are case sensitive. +// Type will return the empty string if given an empty key or a key that does +// not exist. Keys are case sensitive. func (md *MetaData) Type(key ...string) string { fullkey := strings.Join(key, ".") if typ, ok := md.types[fullkey]; ok { @@ -51,13 +52,11 @@ func (md *MetaData) Type(key ...string) string { return "" } -// Key is the type of any TOML key, including key groups. Use (MetaData).Keys -// to get values of this type. +// Key represents any TOML key, including key groups. Use (MetaData).Keys to get +// values of this type. type Key []string -func (k Key) String() string { - return strings.Join(k, ".") -} +func (k Key) String() string { return strings.Join(k, ".") } func (k Key) maybeQuotedAll() string { var ss []string @@ -68,6 +67,9 @@ func (k Key) maybeQuotedAll() string { } func (k Key) maybeQuoted(i int) string { + if k[i] == "" { + return `""` + } quote := false for _, c := range k[i] { if !isBareKeyChar(c) { @@ -76,7 +78,7 @@ func (k Key) maybeQuoted(i int) string { } } if quote { - return "\"" + strings.Replace(k[i], "\"", "\\\"", -1) + "\"" + return `"` + quotedReplacer.Replace(k[i]) + `"` } return k[i] } @@ -89,10 +91,10 @@ func (k Key) add(piece string) Key { } // Keys returns a slice of every key in the TOML data, including key groups. -// Each key is itself a slice, where the first element is the top of the -// hierarchy and the last is the most specific. // -// The list will have the same order as the keys appeared in the TOML data. +// Each key is itself a slice, where the first element is the top of the +// hierarchy and the last is the most specific. The list will have the same +// order as the keys appeared in the TOML data. // // All keys returned are non-empty. func (md *MetaData) Keys() []Key { diff --git a/vendor/github.com/BurntSushi/toml/deprecated.go b/vendor/github.com/BurntSushi/toml/deprecated.go new file mode 100644 index 000000000..db89eac1d --- /dev/null +++ b/vendor/github.com/BurntSushi/toml/deprecated.go @@ -0,0 +1,33 @@ +package toml + +import ( + "encoding" + "io" +) + +// DEPRECATED! +// +// Use the identical encoding.TextMarshaler instead. It is defined here to +// support Go 1.1 and older. +type TextMarshaler encoding.TextMarshaler + +// DEPRECATED! +// +// Use the identical encoding.TextUnmarshaler instead. It is defined here to +// support Go 1.1 and older. +type TextUnmarshaler encoding.TextUnmarshaler + +// DEPRECATED! +// +// Use MetaData.PrimitiveDecode instead. +func PrimitiveDecode(primValue Primitive, v interface{}) error { + md := MetaData{decoded: make(map[string]bool)} + return md.unify(primValue.undecoded, rvalue(v)) +} + +// DEPRECATED! +// +// Use NewDecoder(reader).Decode(&v) instead. +func DecodeReader(r io.Reader, v interface{}) (MetaData, error) { + return NewDecoder(r).Decode(v) +} diff --git a/vendor/github.com/BurntSushi/toml/doc.go b/vendor/github.com/BurntSushi/toml/doc.go index b371f396e..099c4a77d 100644 --- a/vendor/github.com/BurntSushi/toml/doc.go +++ b/vendor/github.com/BurntSushi/toml/doc.go @@ -1,27 +1,13 @@ /* -Package toml provides facilities for decoding and encoding TOML configuration -files via reflection. There is also support for delaying decoding with -the Primitive type, and querying the set of keys in a TOML document with the -MetaData type. +Package toml implements decoding and encoding of TOML files. -The specification implemented: https://github.com/toml-lang/toml +This package supports TOML v1.0.0, as listed on https://toml.io -The sub-command github.com/BurntSushi/toml/cmd/tomlv can be used to verify -whether a file is a valid TOML document. It can also be used to print the -type of each key in a TOML document. +There is also support for delaying decoding with the Primitive type, and +querying the set of keys in a TOML document with the MetaData type. -Testing - -There are two important types of tests used for this package. The first is -contained inside '*_test.go' files and uses the standard Go unit testing -framework. These tests are primarily devoted to holistically testing the -decoder and encoder. - -The second type of testing is used to verify the implementation's adherence -to the TOML specification. These tests have been factored into their own -project: https://github.com/BurntSushi/toml-test - -The reason the tests are in a separate project is so that they can be used by -any implementation of TOML. Namely, it is language agnostic. +The github.com/BurntSushi/toml/cmd/tomlv package implements a TOML validator, +and can be used to verify if TOML document is valid. It can also be used to +print the type of each key. */ package toml diff --git a/vendor/github.com/BurntSushi/toml/encode.go b/vendor/github.com/BurntSushi/toml/encode.go index d905c21a2..10d88ac63 100644 --- a/vendor/github.com/BurntSushi/toml/encode.go +++ b/vendor/github.com/BurntSushi/toml/encode.go @@ -2,48 +2,92 @@ package toml import ( "bufio" + "encoding" "errors" "fmt" "io" + "math" "reflect" "sort" "strconv" "strings" "time" + + "github.com/BurntSushi/toml/internal" ) type tomlEncodeError struct{ error } var ( - errArrayMixedElementTypes = errors.New( - "toml: cannot encode array with mixed element types") - errArrayNilElement = errors.New( - "toml: cannot encode array with nil element") - errNonString = errors.New( - "toml: cannot encode a map with non-string key type") - errAnonNonStruct = errors.New( - "toml: cannot encode an anonymous field that is not a struct") - errArrayNoTable = errors.New( - "toml: TOML array element cannot contain a table") - errNoKey = errors.New( - "toml: top-level values must be Go maps or structs") - errAnything = errors.New("") // used in testing + errArrayNilElement = errors.New("toml: cannot encode array with nil element") + errNonString = errors.New("toml: cannot encode a map with non-string key type") + errAnonNonStruct = errors.New("toml: cannot encode an anonymous field that is not a struct") + errNoKey = errors.New("toml: top-level values must be Go maps or structs") + errAnything = errors.New("") // used in testing ) var quotedReplacer = strings.NewReplacer( - "\t", "\\t", - "\n", "\\n", - "\r", "\\r", "\"", "\\\"", "\\", "\\\\", + "\x00", `\u0000`, + "\x01", `\u0001`, + "\x02", `\u0002`, + "\x03", `\u0003`, + "\x04", `\u0004`, + "\x05", `\u0005`, + "\x06", `\u0006`, + "\x07", `\u0007`, + "\b", `\b`, + "\t", `\t`, + "\n", `\n`, + "\x0b", `\u000b`, + "\f", `\f`, + "\r", `\r`, + "\x0e", `\u000e`, + "\x0f", `\u000f`, + "\x10", `\u0010`, + "\x11", `\u0011`, + "\x12", `\u0012`, + "\x13", `\u0013`, + "\x14", `\u0014`, + "\x15", `\u0015`, + "\x16", `\u0016`, + "\x17", `\u0017`, + "\x18", `\u0018`, + "\x19", `\u0019`, + "\x1a", `\u001a`, + "\x1b", `\u001b`, + "\x1c", `\u001c`, + "\x1d", `\u001d`, + "\x1e", `\u001e`, + "\x1f", `\u001f`, + "\x7f", `\u007f`, ) -// Encoder controls the encoding of Go values to a TOML document to some -// io.Writer. +// Encoder encodes a Go to a TOML document. +// +// The mapping between Go values and TOML values should be precisely the same as +// for the Decode* functions. Similarly, the TextMarshaler interface is +// supported by encoding the resulting bytes as strings. If you want to write +// arbitrary binary data then you will need to use something like base64 since +// TOML does not have any binary types. +// +// When encoding TOML hashes (Go maps or structs), keys without any sub-hashes +// are encoded first. +// +// Go maps will be sorted alphabetically by key for deterministic output. // -// The indentation level can be controlled with the Indent field. +// Encoding Go values without a corresponding TOML representation will return an +// error. Examples of this includes maps with non-string keys, slices with nil +// elements, embedded non-struct types, and nested slices containing maps or +// structs. (e.g. [][]map[string]string is not allowed but []map[string]string +// is okay, as is []map[string][]string). +// +// NOTE: Only exported keys are encoded due to the use of reflection. Unexported +// keys are silently discarded. type Encoder struct { - // A single indentation level. By default it is two spaces. + // The string to use for a single indentation level. The default is two + // spaces. Indent string // hasWritten is whether we have written any output to w yet. @@ -51,8 +95,7 @@ type Encoder struct { w *bufio.Writer } -// NewEncoder returns a TOML encoder that encodes Go values to the io.Writer -// given. By default, a single indentation level is 2 spaces. +// NewEncoder create a new Encoder. func NewEncoder(w io.Writer) *Encoder { return &Encoder{ w: bufio.NewWriter(w), @@ -60,29 +103,10 @@ func NewEncoder(w io.Writer) *Encoder { } } -// Encode writes a TOML representation of the Go value to the underlying -// io.Writer. If the value given cannot be encoded to a valid TOML document, -// then an error is returned. -// -// The mapping between Go values and TOML values should be precisely the same -// as for the Decode* functions. Similarly, the TextMarshaler interface is -// supported by encoding the resulting bytes as strings. (If you want to write -// arbitrary binary data then you will need to use something like base64 since -// TOML does not have any binary types.) -// -// When encoding TOML hashes (i.e., Go maps or structs), keys without any -// sub-hashes are encoded first. +// Encode writes a TOML representation of the Go value to the Encoder's writer. // -// If a Go map is encoded, then its keys are sorted alphabetically for -// deterministic output. More control over this behavior may be provided if -// there is demand for it. -// -// Encoding Go values without a corresponding TOML representation---like map -// types with non-string keys---will cause an error to be returned. Similarly -// for mixed arrays/slices, arrays/slices with nil elements, embedded -// non-struct types and nested slices containing maps or structs. -// (e.g., [][]map[string]string is not allowed but []map[string]string is OK -// and so is []map[string][]string.) +// An error is returned if the value given cannot be encoded to a valid TOML +// document. func (enc *Encoder) Encode(v interface{}) error { rv := eindirect(reflect.ValueOf(v)) if err := enc.safeEncode(Key([]string{}), rv); err != nil { @@ -110,9 +134,13 @@ func (enc *Encoder) encode(key Key, rv reflect.Value) { // Special case. If we can marshal the type to text, then we used that. // Basically, this prevents the encoder for handling these types as // generic structs (or whatever the underlying type of a TextMarshaler is). - switch rv.Interface().(type) { - case time.Time, TextMarshaler: - enc.keyEqElement(key, rv) + switch t := rv.Interface().(type) { + case time.Time, encoding.TextMarshaler: + enc.writeKeyValue(key, rv, false) + return + // TODO: #76 would make this superfluous after implemented. + case Primitive: + enc.encode(key, reflect.ValueOf(t.undecoded)) return } @@ -123,12 +151,12 @@ func (enc *Encoder) encode(key Key, rv reflect.Value) { reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String, reflect.Bool: - enc.keyEqElement(key, rv) + enc.writeKeyValue(key, rv, false) case reflect.Array, reflect.Slice: if typeEqual(tomlArrayHash, tomlTypeOfGo(rv)) { enc.eArrayOfTables(key, rv) } else { - enc.keyEqElement(key, rv) + enc.writeKeyValue(key, rv, false) } case reflect.Interface: if rv.IsNil() { @@ -148,22 +176,32 @@ func (enc *Encoder) encode(key Key, rv reflect.Value) { case reflect.Struct: enc.eTable(key, rv) default: - panic(e("unsupported type for key '%s': %s", key, k)) + encPanic(fmt.Errorf("unsupported type for key '%s': %s", key, k)) } } -// eElement encodes any value that can be an array element (primitives and -// arrays). +// eElement encodes any value that can be an array element. func (enc *Encoder) eElement(rv reflect.Value) { switch v := rv.Interface().(type) { - case time.Time: - // Special case time.Time as a primitive. Has to come before - // TextMarshaler below because time.Time implements - // encoding.TextMarshaler, but we need to always use UTC. - enc.wf(v.UTC().Format("2006-01-02T15:04:05Z")) + case time.Time: // Using TextMarshaler adds extra quotes, which we don't want. + format := time.RFC3339Nano + switch v.Location() { + case internal.LocalDatetime: + format = "2006-01-02T15:04:05.999999999" + case internal.LocalDate: + format = "2006-01-02" + case internal.LocalTime: + format = "15:04:05.999999999" + } + switch v.Location() { + default: + enc.wf(v.Format(format)) + case internal.LocalDatetime, internal.LocalDate, internal.LocalTime: + enc.wf(v.In(time.UTC).Format(format)) + } return - case TextMarshaler: - // Special case. Use text marshaler if it's available for this value. + case encoding.TextMarshaler: + // Use text marshaler if it's available for this value. if s, err := v.MarshalText(); err != nil { encPanic(err) } else { @@ -171,32 +209,49 @@ func (enc *Encoder) eElement(rv reflect.Value) { } return } + switch rv.Kind() { + case reflect.String: + enc.writeQuoted(rv.String()) case reflect.Bool: enc.wf(strconv.FormatBool(rv.Bool())) - case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, - reflect.Int64: + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: enc.wf(strconv.FormatInt(rv.Int(), 10)) - case reflect.Uint, reflect.Uint8, reflect.Uint16, - reflect.Uint32, reflect.Uint64: + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64: enc.wf(strconv.FormatUint(rv.Uint(), 10)) case reflect.Float32: - enc.wf(floatAddDecimal(strconv.FormatFloat(rv.Float(), 'f', -1, 32))) + f := rv.Float() + if math.IsNaN(f) { + enc.wf("nan") + } else if math.IsInf(f, 0) { + enc.wf("%cinf", map[bool]byte{true: '-', false: '+'}[math.Signbit(f)]) + } else { + enc.wf(floatAddDecimal(strconv.FormatFloat(f, 'f', -1, 32))) + } case reflect.Float64: - enc.wf(floatAddDecimal(strconv.FormatFloat(rv.Float(), 'f', -1, 64))) + f := rv.Float() + if math.IsNaN(f) { + enc.wf("nan") + } else if math.IsInf(f, 0) { + enc.wf("%cinf", map[bool]byte{true: '-', false: '+'}[math.Signbit(f)]) + } else { + enc.wf(floatAddDecimal(strconv.FormatFloat(f, 'f', -1, 64))) + } case reflect.Array, reflect.Slice: enc.eArrayOrSliceElement(rv) + case reflect.Struct: + enc.eStruct(nil, rv, true) + case reflect.Map: + enc.eMap(nil, rv, true) case reflect.Interface: enc.eElement(rv.Elem()) - case reflect.String: - enc.writeQuoted(rv.String()) default: - panic(e("unexpected primitive type: %s", rv.Kind())) + encPanic(fmt.Errorf("unexpected primitive type: %T", rv.Interface())) } } -// By the TOML spec, all floats must have a decimal with at least one -// number on either side. +// By the TOML spec, all floats must have a decimal with at least one number on +// either side. func floatAddDecimal(fstr string) string { if !strings.Contains(fstr, ".") { return fstr + ".0" @@ -230,16 +285,14 @@ func (enc *Encoder) eArrayOfTables(key Key, rv reflect.Value) { if isNil(trv) { continue } - panicIfInvalidKey(key) enc.newline() enc.wf("%s[[%s]]", enc.indentStr(key), key.maybeQuotedAll()) enc.newline() - enc.eMapOrStruct(key, trv) + enc.eMapOrStruct(key, trv, false) } } func (enc *Encoder) eTable(key Key, rv reflect.Value) { - panicIfInvalidKey(key) if len(key) == 1 { // Output an extra newline between top-level tables. // (The newline isn't written if nothing else has been written though.) @@ -249,21 +302,22 @@ func (enc *Encoder) eTable(key Key, rv reflect.Value) { enc.wf("%s[%s]", enc.indentStr(key), key.maybeQuotedAll()) enc.newline() } - enc.eMapOrStruct(key, rv) + enc.eMapOrStruct(key, rv, false) } -func (enc *Encoder) eMapOrStruct(key Key, rv reflect.Value) { +func (enc *Encoder) eMapOrStruct(key Key, rv reflect.Value, inline bool) { switch rv := eindirect(rv); rv.Kind() { case reflect.Map: - enc.eMap(key, rv) + enc.eMap(key, rv, inline) case reflect.Struct: - enc.eStruct(key, rv) + enc.eStruct(key, rv, inline) default: + // Should never happen? panic("eTable: unhandled reflect.Value Kind: " + rv.Kind().String()) } } -func (enc *Encoder) eMap(key Key, rv reflect.Value) { +func (enc *Encoder) eMap(key Key, rv reflect.Value, inline bool) { rt := rv.Type() if rt.Key().Kind() != reflect.String { encPanic(errNonString) @@ -281,57 +335,76 @@ func (enc *Encoder) eMap(key Key, rv reflect.Value) { } } - var writeMapKeys = func(mapKeys []string) { + var writeMapKeys = func(mapKeys []string, trailC bool) { sort.Strings(mapKeys) - for _, mapKey := range mapKeys { - mrv := rv.MapIndex(reflect.ValueOf(mapKey)) - if isNil(mrv) { - // Don't write anything for nil fields. + for i, mapKey := range mapKeys { + val := rv.MapIndex(reflect.ValueOf(mapKey)) + if isNil(val) { continue } - enc.encode(key.add(mapKey), mrv) + + if inline { + enc.writeKeyValue(Key{mapKey}, val, true) + if trailC || i != len(mapKeys)-1 { + enc.wf(", ") + } + } else { + enc.encode(key.add(mapKey), val) + } } } - writeMapKeys(mapKeysDirect) - writeMapKeys(mapKeysSub) + + if inline { + enc.wf("{") + } + writeMapKeys(mapKeysDirect, len(mapKeysSub) > 0) + writeMapKeys(mapKeysSub, false) + if inline { + enc.wf("}") + } } -func (enc *Encoder) eStruct(key Key, rv reflect.Value) { +func (enc *Encoder) eStruct(key Key, rv reflect.Value, inline bool) { // Write keys for fields directly under this key first, because if we write - // a field that creates a new table, then all keys under it will be in that + // a field that creates a new table then all keys under it will be in that // table (not the one we're writing here). - rt := rv.Type() - var fieldsDirect, fieldsSub [][]int - var addFields func(rt reflect.Type, rv reflect.Value, start []int) + // + // Fields is a [][]int: for fieldsDirect this always has one entry (the + // struct index). For fieldsSub it contains two entries: the parent field + // index from tv, and the field indexes for the fields of the sub. + var ( + rt = rv.Type() + fieldsDirect, fieldsSub [][]int + addFields func(rt reflect.Type, rv reflect.Value, start []int) + ) addFields = func(rt reflect.Type, rv reflect.Value, start []int) { for i := 0; i < rt.NumField(); i++ { f := rt.Field(i) - // skip unexported fields - if f.PkgPath != "" && !f.Anonymous { + if f.PkgPath != "" && !f.Anonymous { /// Skip unexported fields. continue } + frv := rv.Field(i) + + // Treat anonymous struct fields with tag names as though they are + // not anonymous, like encoding/json does. + // + // Non-struct anonymous fields use the normal encoding logic. if f.Anonymous { t := f.Type switch t.Kind() { case reflect.Struct: - // Treat anonymous struct fields with - // tag names as though they are not - // anonymous, like encoding/json does. if getOptions(f.Tag).name == "" { - addFields(t, frv, f.Index) + addFields(t, frv, append(start, f.Index...)) continue } case reflect.Ptr: - if t.Elem().Kind() == reflect.Struct && - getOptions(f.Tag).name == "" { + if t.Elem().Kind() == reflect.Struct && getOptions(f.Tag).name == "" { if !frv.IsNil() { - addFields(t.Elem(), frv.Elem(), f.Index) + addFields(t.Elem(), frv.Elem(), append(start, f.Index...)) } continue } - // Fall through to the normal field encoding logic below - // for non-struct anonymous fields. } } @@ -344,35 +417,49 @@ func (enc *Encoder) eStruct(key Key, rv reflect.Value) { } addFields(rt, rv, nil) - var writeFields = func(fields [][]int) { + writeFields := func(fields [][]int) { for _, fieldIndex := range fields { - sft := rt.FieldByIndex(fieldIndex) - sf := rv.FieldByIndex(fieldIndex) - if isNil(sf) { - // Don't write anything for nil fields. + fieldType := rt.FieldByIndex(fieldIndex) + fieldVal := rv.FieldByIndex(fieldIndex) + + if isNil(fieldVal) { /// Don't write anything for nil fields. continue } - opts := getOptions(sft.Tag) + opts := getOptions(fieldType.Tag) if opts.skip { continue } - keyName := sft.Name + keyName := fieldType.Name if opts.name != "" { keyName = opts.name } - if opts.omitempty && isEmpty(sf) { + if opts.omitempty && isEmpty(fieldVal) { continue } - if opts.omitzero && isZero(sf) { + if opts.omitzero && isZero(fieldVal) { continue } - enc.encode(key.add(keyName), sf) + if inline { + enc.writeKeyValue(Key{keyName}, fieldVal, true) + if fieldIndex[0] != len(fields)-1 { + enc.wf(", ") + } + } else { + enc.encode(key.add(keyName), fieldVal) + } } } + + if inline { + enc.wf("{") + } writeFields(fieldsDirect) writeFields(fieldsSub) + if inline { + enc.wf("}") + } } // tomlTypeName returns the TOML type name of the Go value's type. It is @@ -411,13 +498,26 @@ func tomlTypeOfGo(rv reflect.Value) tomlType { switch rv.Interface().(type) { case time.Time: return tomlDatetime - case TextMarshaler: + case encoding.TextMarshaler: return tomlString default: + // Someone used a pointer receiver: we can make it work for pointer + // values. + if rv.CanAddr() { + _, ok := rv.Addr().Interface().(encoding.TextMarshaler) + if ok { + return tomlString + } + } return tomlHash } default: - panic("unexpected reflect.Kind: " + rv.Kind().String()) + _, ok := rv.Interface().(encoding.TextMarshaler) + if ok { + return tomlString + } + encPanic(errors.New("unsupported type: " + rv.Kind().String())) + panic("") // Need *some* return value } } @@ -430,29 +530,18 @@ func tomlArrayType(rv reflect.Value) tomlType { if isNil(rv) || !rv.IsValid() || rv.Len() == 0 { return nil } - firstType := tomlTypeOfGo(rv.Index(0)) - if firstType == nil { - encPanic(errArrayNilElement) - } + /// Don't allow nil. rvlen := rv.Len() for i := 1; i < rvlen; i++ { - elem := rv.Index(i) - switch elemType := tomlTypeOfGo(elem); { - case elemType == nil: + if tomlTypeOfGo(rv.Index(i)) == nil { encPanic(errArrayNilElement) - case !typeEqual(firstType, elemType): - encPanic(errArrayMixedElementTypes) } } - // If we have a nested array, then we must make sure that the nested - // array contains ONLY primitives. - // This checks arbitrarily nested arrays. - if typeEqual(firstType, tomlArray) || typeEqual(firstType, tomlArrayHash) { - nest := tomlArrayType(eindirect(rv.Index(0))) - if typeEqual(nest, tomlHash) || typeEqual(nest, tomlArrayHash) { - encPanic(errArrayNoTable) - } + + firstType := tomlTypeOfGo(rv.Index(0)) + if firstType == nil { + encPanic(errArrayNilElement) } return firstType } @@ -511,14 +600,20 @@ func (enc *Encoder) newline() { } } -func (enc *Encoder) keyEqElement(key Key, val reflect.Value) { +// Write a key/value pair: +// +// key = <any value> +// +// If inline is true it won't add a newline at the end. +func (enc *Encoder) writeKeyValue(key Key, val reflect.Value, inline bool) { if len(key) == 0 { encPanic(errNoKey) } - panicIfInvalidKey(key) enc.wf("%s%s = ", enc.indentStr(key), key.maybeQuoted(len(key)-1)) enc.eElement(val) - enc.newline() + if !inline { + enc.newline() + } } func (enc *Encoder) wf(format string, v ...interface{}) { @@ -553,16 +648,3 @@ func isNil(rv reflect.Value) bool { return false } } - -func panicIfInvalidKey(key Key) { - for _, k := range key { - if len(k) == 0 { - encPanic(e("Key '%s' is not a valid table name. Key names "+ - "cannot be empty.", key.maybeQuotedAll())) - } - } -} - -func isValidKeyName(s string) bool { - return len(s) != 0 -} diff --git a/vendor/github.com/BurntSushi/toml/encoding_types.go b/vendor/github.com/BurntSushi/toml/encoding_types.go deleted file mode 100644 index d36e1dd60..000000000 --- a/vendor/github.com/BurntSushi/toml/encoding_types.go +++ /dev/null @@ -1,19 +0,0 @@ -// +build go1.2 - -package toml - -// In order to support Go 1.1, we define our own TextMarshaler and -// TextUnmarshaler types. For Go 1.2+, we just alias them with the -// standard library interfaces. - -import ( - "encoding" -) - -// TextMarshaler is a synonym for encoding.TextMarshaler. It is defined here -// so that Go 1.1 can be supported. -type TextMarshaler encoding.TextMarshaler - -// TextUnmarshaler is a synonym for encoding.TextUnmarshaler. It is defined -// here so that Go 1.1 can be supported. -type TextUnmarshaler encoding.TextUnmarshaler diff --git a/vendor/github.com/BurntSushi/toml/encoding_types_1.1.go b/vendor/github.com/BurntSushi/toml/encoding_types_1.1.go deleted file mode 100644 index e8d503d04..000000000 --- a/vendor/github.com/BurntSushi/toml/encoding_types_1.1.go +++ /dev/null @@ -1,18 +0,0 @@ -// +build !go1.2 - -package toml - -// These interfaces were introduced in Go 1.2, so we add them manually when -// compiling for Go 1.1. - -// TextMarshaler is a synonym for encoding.TextMarshaler. It is defined here -// so that Go 1.1 can be supported. -type TextMarshaler interface { - MarshalText() (text []byte, err error) -} - -// TextUnmarshaler is a synonym for encoding.TextUnmarshaler. It is defined -// here so that Go 1.1 can be supported. -type TextUnmarshaler interface { - UnmarshalText(text []byte) error -} diff --git a/vendor/github.com/BurntSushi/toml/go.mod b/vendor/github.com/BurntSushi/toml/go.mod new file mode 100644 index 000000000..82989481d --- /dev/null +++ b/vendor/github.com/BurntSushi/toml/go.mod @@ -0,0 +1,3 @@ +module github.com/BurntSushi/toml + +go 1.16 diff --git a/vendor/github.com/BurntSushi/toml/go.sum b/vendor/github.com/BurntSushi/toml/go.sum new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/vendor/github.com/BurntSushi/toml/go.sum diff --git a/vendor/github.com/BurntSushi/toml/internal/tz.go b/vendor/github.com/BurntSushi/toml/internal/tz.go new file mode 100644 index 000000000..022f15bc2 --- /dev/null +++ b/vendor/github.com/BurntSushi/toml/internal/tz.go @@ -0,0 +1,36 @@ +package internal + +import "time" + +// Timezones used for local datetime, date, and time TOML types. +// +// The exact way times and dates without a timezone should be interpreted is not +// well-defined in the TOML specification and left to the implementation. These +// defaults to current local timezone offset of the computer, but this can be +// changed by changing these variables before decoding. +// +// TODO: +// Ideally we'd like to offer people the ability to configure the used timezone +// by setting Decoder.Timezone and Encoder.Timezone; however, this is a bit +// tricky: the reason we use three different variables for this is to support +// round-tripping – without these specific TZ names we wouldn't know which +// format to use. +// +// There isn't a good way to encode this right now though, and passing this sort +// of information also ties in to various related issues such as string format +// encoding, encoding of comments, etc. +// +// So, for the time being, just put this in internal until we can write a good +// comprehensive API for doing all of this. +// +// The reason they're exported is because they're referred from in e.g. +// internal/tag. +// +// Note that this behaviour is valid according to the TOML spec as the exact +// behaviour is left up to implementations. +var ( + localOffset = func() int { _, o := time.Now().Zone(); return o }() + LocalDatetime = time.FixedZone("datetime-local", localOffset) + LocalDate = time.FixedZone("date-local", localOffset) + LocalTime = time.FixedZone("time-local", localOffset) +) diff --git a/vendor/github.com/BurntSushi/toml/lex.go b/vendor/github.com/BurntSushi/toml/lex.go index e0a742a88..adc4eb5d5 100644 --- a/vendor/github.com/BurntSushi/toml/lex.go +++ b/vendor/github.com/BurntSushi/toml/lex.go @@ -2,6 +2,8 @@ package toml import ( "fmt" + "reflect" + "runtime" "strings" "unicode" "unicode/utf8" @@ -29,6 +31,7 @@ const ( itemArrayTableStart itemArrayTableEnd itemKeyStart + itemKeyEnd itemCommentStart itemInlineTableStart itemInlineTableEnd @@ -64,9 +67,9 @@ type lexer struct { state stateFn items chan item - // Allow for backing up up to three runes. + // Allow for backing up up to four runes. // This is necessary because TOML contains 3-rune tokens (""" and '''). - prevWidths [3]int + prevWidths [4]int nprev int // how many of prevWidths are in use // If we emit an eof, we can still back up, but it is not OK to call // next again. @@ -93,6 +96,7 @@ func (lx *lexer) nextItem() item { return item default: lx.state = lx.state(lx) + //fmt.Printf(" STATE %-24s current: %-10q stack: %s\n", lx.state, lx.current(), lx.stack) } } } @@ -137,7 +141,7 @@ func (lx *lexer) emitTrim(typ itemType) { func (lx *lexer) next() (r rune) { if lx.atEOF { - panic("next called after EOF") + panic("BUG in lexer: next called after EOF") } if lx.pos >= len(lx.input) { lx.atEOF = true @@ -147,12 +151,19 @@ func (lx *lexer) next() (r rune) { if lx.input[lx.pos] == '\n' { lx.line++ } + lx.prevWidths[3] = lx.prevWidths[2] lx.prevWidths[2] = lx.prevWidths[1] lx.prevWidths[1] = lx.prevWidths[0] - if lx.nprev < 3 { + if lx.nprev < 4 { lx.nprev++ } + r, w := utf8.DecodeRuneInString(lx.input[lx.pos:]) + if r == utf8.RuneError { + lx.errorf("invalid UTF-8 byte at position %d (line %d): 0x%02x", lx.pos, lx.line, lx.input[lx.pos]) + return utf8.RuneError + } + lx.prevWidths[0] = w lx.pos += w return r @@ -163,18 +174,19 @@ func (lx *lexer) ignore() { lx.start = lx.pos } -// backup steps back one rune. Can be called only twice between calls to next. +// backup steps back one rune. Can be called 4 times between calls to next. func (lx *lexer) backup() { if lx.atEOF { lx.atEOF = false return } if lx.nprev < 1 { - panic("backed up too far") + panic("BUG in lexer: backed up too far") } w := lx.prevWidths[0] lx.prevWidths[0] = lx.prevWidths[1] lx.prevWidths[1] = lx.prevWidths[2] + lx.prevWidths[2] = lx.prevWidths[3] lx.nprev-- lx.pos -= w if lx.pos < len(lx.input) && lx.input[lx.pos] == '\n' { @@ -269,8 +281,9 @@ func lexTopEnd(lx *lexer) stateFn { lx.emit(itemEOF) return nil } - return lx.errorf("expected a top-level item to end with a newline, "+ - "comment, or EOF, but got %q instead", r) + return lx.errorf( + "expected a top-level item to end with a newline, comment, or EOF, but got %q instead", + r) } // lexTable lexes the beginning of a table. Namely, it makes sure that @@ -297,8 +310,9 @@ func lexTableEnd(lx *lexer) stateFn { func lexArrayTableEnd(lx *lexer) stateFn { if r := lx.next(); r != arrayTableEnd { - return lx.errorf("expected end of table array name delimiter %q, "+ - "but got %q instead", arrayTableEnd, r) + return lx.errorf( + "expected end of table array name delimiter %q, but got %q instead", + arrayTableEnd, r) } lx.emit(itemArrayTableEnd) return lexTopEnd @@ -308,30 +322,17 @@ func lexTableNameStart(lx *lexer) stateFn { lx.skip(isWhitespace) switch r := lx.peek(); { case r == tableEnd || r == eof: - return lx.errorf("unexpected end of table name " + - "(table names cannot be empty)") + return lx.errorf("unexpected end of table name (table names cannot be empty)") case r == tableSep: - return lx.errorf("unexpected table separator " + - "(table names cannot be empty)") + return lx.errorf("unexpected table separator (table names cannot be empty)") case r == stringStart || r == rawStringStart: lx.ignore() lx.push(lexTableNameEnd) - return lexValue // reuse string lexing + return lexQuotedName default: - return lexBareTableName - } -} - -// lexBareTableName lexes the name of a table. It assumes that at least one -// valid character for the table has already been read. -func lexBareTableName(lx *lexer) stateFn { - r := lx.next() - if isBareKeyChar(r) { - return lexBareTableName + lx.push(lexTableNameEnd) + return lexBareName } - lx.backup() - lx.emit(itemText) - return lexTableNameEnd } // lexTableNameEnd reads the end of a piece of a table name, optionally @@ -347,63 +348,101 @@ func lexTableNameEnd(lx *lexer) stateFn { case r == tableEnd: return lx.pop() default: - return lx.errorf("expected '.' or ']' to end table name, "+ - "but got %q instead", r) + return lx.errorf("expected '.' or ']' to end table name, but got %q instead", r) } } -// lexKeyStart consumes a key name up until the first non-whitespace character. -// lexKeyStart will ignore whitespace. -func lexKeyStart(lx *lexer) stateFn { - r := lx.peek() +// lexBareName lexes one part of a key or table. +// +// It assumes that at least one valid character for the table has already been +// read. +// +// Lexes only one part, e.g. only 'a' inside 'a.b'. +func lexBareName(lx *lexer) stateFn { + r := lx.next() + if isBareKeyChar(r) { + return lexBareName + } + lx.backup() + lx.emit(itemText) + return lx.pop() +} + +// lexBareName lexes one part of a key or table. +// +// It assumes that at least one valid character for the table has already been +// read. +// +// Lexes only one part, e.g. only '"a"' inside '"a".b'. +func lexQuotedName(lx *lexer) stateFn { + r := lx.next() switch { - case r == keySep: - return lx.errorf("unexpected key separator %q", keySep) - case isWhitespace(r) || isNL(r): - lx.next() - return lexSkip(lx, lexKeyStart) - case r == stringStart || r == rawStringStart: - lx.ignore() - lx.emit(itemKeyStart) - lx.push(lexKeyEnd) - return lexValue // reuse string lexing + case isWhitespace(r): + return lexSkip(lx, lexValue) + case r == stringStart: + lx.ignore() // ignore the '"' + return lexString + case r == rawStringStart: + lx.ignore() // ignore the "'" + return lexRawString + case r == eof: + return lx.errorf("unexpected EOF; expected value") default: + return lx.errorf("expected value but found %q instead", r) + } +} + +// lexKeyStart consumes all key parts until a '='. +func lexKeyStart(lx *lexer) stateFn { + lx.skip(isWhitespace) + switch r := lx.peek(); { + case r == '=' || r == eof: + return lx.errorf("unexpected '=': key name appears blank") + case r == '.': + return lx.errorf("unexpected '.': keys cannot start with a '.'") + case r == stringStart || r == rawStringStart: lx.ignore() + fallthrough + default: // Bare key lx.emit(itemKeyStart) - return lexBareKey + return lexKeyNameStart } } -// lexBareKey consumes the text of a bare key. Assumes that the first character -// (which is not whitespace) has not yet been consumed. -func lexBareKey(lx *lexer) stateFn { - switch r := lx.next(); { - case isBareKeyChar(r): - return lexBareKey - case isWhitespace(r): - lx.backup() - lx.emit(itemText) - return lexKeyEnd - case r == keySep: - lx.backup() - lx.emit(itemText) - return lexKeyEnd +func lexKeyNameStart(lx *lexer) stateFn { + lx.skip(isWhitespace) + switch r := lx.peek(); { + case r == '=' || r == eof: + return lx.errorf("unexpected '='") + case r == '.': + return lx.errorf("unexpected '.'") + case r == stringStart || r == rawStringStart: + lx.ignore() + lx.push(lexKeyEnd) + return lexQuotedName default: - return lx.errorf("bare keys cannot contain %q", r) + lx.push(lexKeyEnd) + return lexBareName } } // lexKeyEnd consumes the end of a key and trims whitespace (up to the key // separator). func lexKeyEnd(lx *lexer) stateFn { + lx.skip(isWhitespace) switch r := lx.next(); { - case r == keySep: - return lexSkip(lx, lexValue) case isWhitespace(r): return lexSkip(lx, lexKeyEnd) + case r == eof: + return lx.errorf("unexpected EOF; expected key separator %q", keySep) + case r == '.': + lx.ignore() + return lexKeyNameStart + case r == '=': + lx.emit(itemKeyEnd) + return lexSkip(lx, lexValue) default: - return lx.errorf("expected key separator %q, but got %q instead", - keySep, r) + return lx.errorf("expected '.' or '=', but got %q instead", r) } } @@ -450,10 +489,15 @@ func lexValue(lx *lexer) stateFn { } lx.ignore() // ignore the "'" return lexRawString - case '+', '-': - return lexNumberStart case '.': // special error case, be kind to users return lx.errorf("floats must start with a digit, not '.'") + case 'i', 'n': + if (lx.accept('n') && lx.accept('f')) || (lx.accept('a') && lx.accept('n')) { + lx.emit(itemFloat) + return lx.pop() + } + case '-', '+': + return lexDecimalNumberStart } if unicode.IsLetter(r) { // Be permissive here; lexBool will give a nice error if the @@ -463,6 +507,9 @@ func lexValue(lx *lexer) stateFn { lx.backup() return lexBool } + if r == eof { + return lx.errorf("unexpected EOF; expected value") + } return lx.errorf("expected value but found %q instead", r) } @@ -507,9 +554,8 @@ func lexArrayValueEnd(lx *lexer) stateFn { return lexArrayEnd } return lx.errorf( - "expected a comma or array terminator %q, but got %q instead", - arrayEnd, r, - ) + "expected a comma or array terminator %q, but got %s instead", + arrayEnd, runeOrEOF(r)) } // lexArrayEnd finishes the lexing of an array. @@ -546,8 +592,7 @@ func lexInlineTableValue(lx *lexer) stateFn { // key/value pair and the next pair (or the end of the table): // it ignores whitespace and expects either a ',' or a '}'. func lexInlineTableValueEnd(lx *lexer) stateFn { - r := lx.next() - switch { + switch r := lx.next(); { case isWhitespace(r): return lexSkip(lx, lexInlineTableValueEnd) case isNL(r): @@ -557,12 +602,25 @@ func lexInlineTableValueEnd(lx *lexer) stateFn { return lexCommentStart case r == comma: lx.ignore() + lx.skip(isWhitespace) + if lx.peek() == '}' { + return lx.errorf("trailing comma not allowed in inline tables") + } return lexInlineTableValue case r == inlineTableEnd: return lexInlineTableEnd + default: + return lx.errorf( + "expected a comma or an inline table terminator %q, but got %s instead", + inlineTableEnd, runeOrEOF(r)) + } +} + +func runeOrEOF(r rune) string { + if r == eof { + return "end of file" } - return lx.errorf("expected a comma or an inline table terminator %q, "+ - "but got %q instead", inlineTableEnd, r) + return "'" + string(r) + "'" } // lexInlineTableEnd finishes the lexing of an inline table. @@ -579,7 +637,9 @@ func lexString(lx *lexer) stateFn { r := lx.next() switch { case r == eof: - return lx.errorf("unexpected EOF") + return lx.errorf(`unexpected EOF; expected '"'`) + case isControl(r) || r == '\r': + return lx.errorf("control characters are not allowed inside strings: '0x%02x'", r) case isNL(r): return lx.errorf("strings cannot contain newlines") case r == '\\': @@ -598,19 +658,40 @@ func lexString(lx *lexer) stateFn { // lexMultilineString consumes the inner contents of a string. It assumes that // the beginning '"""' has already been consumed and ignored. func lexMultilineString(lx *lexer) stateFn { - switch lx.next() { + r := lx.next() + switch r { case eof: - return lx.errorf("unexpected EOF") + return lx.errorf(`unexpected EOF; expected '"""'`) + case '\r': + if lx.peek() != '\n' { + return lx.errorf("control characters are not allowed inside strings: '0x%02x'", r) + } + return lexMultilineString case '\\': return lexMultilineStringEscape case stringEnd: + /// Found " → try to read two more "". if lx.accept(stringEnd) { if lx.accept(stringEnd) { - lx.backup() + /// Peek ahead: the string can contain " and "", including at the + /// end: """str""""" + /// 6 or more at the end, however, is an error. + if lx.peek() == stringEnd { + /// Check if we already lexed 5 's; if so we have 6 now, and + /// that's just too many man! + if strings.HasSuffix(lx.current(), `"""""`) { + return lx.errorf(`unexpected '""""""'`) + } + lx.backup() + lx.backup() + return lexMultilineString + } + + lx.backup() /// backup: don't include the """ in the item. lx.backup() lx.backup() lx.emit(itemMultilineString) - lx.next() + lx.next() /// Read over ''' again and discard it. lx.next() lx.next() lx.ignore() @@ -619,6 +700,10 @@ func lexMultilineString(lx *lexer) stateFn { lx.backup() } } + + if isControl(r) { + return lx.errorf("control characters are not allowed inside strings: '0x%02x'", r) + } return lexMultilineString } @@ -628,7 +713,9 @@ func lexRawString(lx *lexer) stateFn { r := lx.next() switch { case r == eof: - return lx.errorf("unexpected EOF") + return lx.errorf(`unexpected EOF; expected "'"`) + case isControl(r) || r == '\r': + return lx.errorf("control characters are not allowed inside strings: '0x%02x'", r) case isNL(r): return lx.errorf("strings cannot contain newlines") case r == rawStringEnd: @@ -645,17 +732,38 @@ func lexRawString(lx *lexer) stateFn { // a string. It assumes that the beginning "'''" has already been consumed and // ignored. func lexMultilineRawString(lx *lexer) stateFn { - switch lx.next() { + r := lx.next() + switch r { case eof: - return lx.errorf("unexpected EOF") + return lx.errorf(`unexpected EOF; expected "'''"`) + case '\r': + if lx.peek() != '\n' { + return lx.errorf("control characters are not allowed inside strings: '0x%02x'", r) + } + return lexMultilineRawString case rawStringEnd: + /// Found ' → try to read two more ''. if lx.accept(rawStringEnd) { if lx.accept(rawStringEnd) { - lx.backup() + /// Peek ahead: the string can contain ' and '', including at the + /// end: '''str''''' + /// 6 or more at the end, however, is an error. + if lx.peek() == rawStringEnd { + /// Check if we already lexed 5 's; if so we have 6 now, and + /// that's just too many man! + if strings.HasSuffix(lx.current(), "'''''") { + return lx.errorf(`unexpected "''''''"`) + } + lx.backup() + lx.backup() + return lexMultilineRawString + } + + lx.backup() /// backup: don't include the ''' in the item. lx.backup() lx.backup() lx.emit(itemRawMultilineString) - lx.next() + lx.next() /// Read over ''' again and discard it. lx.next() lx.next() lx.ignore() @@ -664,6 +772,10 @@ func lexMultilineRawString(lx *lexer) stateFn { lx.backup() } } + + if isControl(r) { + return lx.errorf("control characters are not allowed inside strings: '0x%02x'", r) + } return lexMultilineRawString } @@ -694,6 +806,10 @@ func lexStringEscape(lx *lexer) stateFn { fallthrough case '"': fallthrough + case ' ', '\t': + // Inside """ .. """ strings you can use \ to escape newlines, and any + // amount of whitespace can be between the \ and \n. + fallthrough case '\\': return lx.pop() case 'u': @@ -701,8 +817,7 @@ func lexStringEscape(lx *lexer) stateFn { case 'U': return lexLongUnicodeEscape } - return lx.errorf("invalid escape character %q; only the following "+ - "escape characters are allowed: "+ + return lx.errorf("invalid escape character %q; only the following escape characters are allowed: "+ `\b, \t, \n, \f, \r, \", \\, \uXXXX, and \UXXXXXXXX`, r) } @@ -711,8 +826,9 @@ func lexShortUnicodeEscape(lx *lexer) stateFn { for i := 0; i < 4; i++ { r = lx.next() if !isHexadecimal(r) { - return lx.errorf(`expected four hexadecimal digits after '\u', `+ - "but got %q instead", lx.current()) + return lx.errorf( + `expected four hexadecimal digits after '\u', but got %q instead`, + lx.current()) } } return lx.pop() @@ -723,28 +839,33 @@ func lexLongUnicodeEscape(lx *lexer) stateFn { for i := 0; i < 8; i++ { r = lx.next() if !isHexadecimal(r) { - return lx.errorf(`expected eight hexadecimal digits after '\U', `+ - "but got %q instead", lx.current()) + return lx.errorf( + `expected eight hexadecimal digits after '\U', but got %q instead`, + lx.current()) } } return lx.pop() } -// lexNumberOrDateStart consumes either an integer, a float, or datetime. +// lexNumberOrDateStart processes the first character of a value which begins +// with a digit. It exists to catch values starting with '0', so that +// lexBaseNumberOrDate can differentiate base prefixed integers from other +// types. func lexNumberOrDateStart(lx *lexer) stateFn { r := lx.next() - if isDigit(r) { - return lexNumberOrDate - } switch r { - case '_': - return lexNumber - case 'e', 'E': - return lexFloat - case '.': - return lx.errorf("floats must start with a digit, not '.'") + case '0': + return lexBaseNumberOrDate } - return lx.errorf("expected a digit but got %q", r) + + if !isDigit(r) { + // The only way to reach this state is if the value starts + // with a digit, so specifically treat anything else as an + // error. + return lx.errorf("expected a digit but got %q", r) + } + + return lexNumberOrDate } // lexNumberOrDate consumes either an integer, float or datetime. @@ -754,10 +875,10 @@ func lexNumberOrDate(lx *lexer) stateFn { return lexNumberOrDate } switch r { - case '-': + case '-', ':': return lexDatetime case '_': - return lexNumber + return lexDecimalNumber case '.', 'e', 'E': return lexFloat } @@ -775,41 +896,156 @@ func lexDatetime(lx *lexer) stateFn { return lexDatetime } switch r { - case '-', 'T', ':', '.', 'Z', '+': + case '-', ':', 'T', 't', ' ', '.', 'Z', 'z', '+': return lexDatetime } lx.backup() - lx.emit(itemDatetime) + lx.emitTrim(itemDatetime) return lx.pop() } -// lexNumberStart consumes either an integer or a float. It assumes that a sign -// has already been read, but that *no* digits have been consumed. -// lexNumberStart will move to the appropriate integer or float states. -func lexNumberStart(lx *lexer) stateFn { - // We MUST see a digit. Even floats have to start with a digit. +// lexHexInteger consumes a hexadecimal integer after seeing the '0x' prefix. +func lexHexInteger(lx *lexer) stateFn { r := lx.next() - if !isDigit(r) { - if r == '.' { - return lx.errorf("floats must start with a digit, not '.'") + if isHexadecimal(r) { + return lexHexInteger + } + switch r { + case '_': + return lexHexInteger + } + + lx.backup() + lx.emit(itemInteger) + return lx.pop() +} + +// lexOctalInteger consumes an octal integer after seeing the '0o' prefix. +func lexOctalInteger(lx *lexer) stateFn { + r := lx.next() + if isOctal(r) { + return lexOctalInteger + } + switch r { + case '_': + return lexOctalInteger + } + + lx.backup() + lx.emit(itemInteger) + return lx.pop() +} + +// lexBinaryInteger consumes a binary integer after seeing the '0b' prefix. +func lexBinaryInteger(lx *lexer) stateFn { + r := lx.next() + if isBinary(r) { + return lexBinaryInteger + } + switch r { + case '_': + return lexBinaryInteger + } + + lx.backup() + lx.emit(itemInteger) + return lx.pop() +} + +// lexDecimalNumber consumes a decimal float or integer. +func lexDecimalNumber(lx *lexer) stateFn { + r := lx.next() + if isDigit(r) { + return lexDecimalNumber + } + switch r { + case '.', 'e', 'E': + return lexFloat + case '_': + return lexDecimalNumber + } + + lx.backup() + lx.emit(itemInteger) + return lx.pop() +} + +// lexDecimalNumber consumes the first digit of a number beginning with a sign. +// It assumes the sign has already been consumed. Values which start with a sign +// are only allowed to be decimal integers or floats. +// +// The special "nan" and "inf" values are also recognized. +func lexDecimalNumberStart(lx *lexer) stateFn { + r := lx.next() + + // Special error cases to give users better error messages + switch r { + case 'i': + if !lx.accept('n') || !lx.accept('f') { + return lx.errorf("invalid float: '%s'", lx.current()) } - return lx.errorf("expected a digit but got %q", r) + lx.emit(itemFloat) + return lx.pop() + case 'n': + if !lx.accept('a') || !lx.accept('n') { + return lx.errorf("invalid float: '%s'", lx.current()) + } + lx.emit(itemFloat) + return lx.pop() + case '0': + p := lx.peek() + switch p { + case 'b', 'o', 'x': + return lx.errorf("cannot use sign with non-decimal numbers: '%s%c'", lx.current(), p) + } + case '.': + return lx.errorf("floats must start with a digit, not '.'") + } + + if isDigit(r) { + return lexDecimalNumber } - return lexNumber + + return lx.errorf("expected a digit but got %q", r) } -// lexNumber consumes an integer or a float after seeing the first digit. -func lexNumber(lx *lexer) stateFn { +// lexBaseNumberOrDate differentiates between the possible values which +// start with '0'. It assumes that before reaching this state, the initial '0' +// has been consumed. +func lexBaseNumberOrDate(lx *lexer) stateFn { r := lx.next() + // Note: All datetimes start with at least two digits, so we don't + // handle date characters (':', '-', etc.) here. if isDigit(r) { - return lexNumber + return lexNumberOrDate } switch r { case '_': - return lexNumber + // Can only be decimal, because there can't be an underscore + // between the '0' and the base designator, and dates can't + // contain underscores. + return lexDecimalNumber case '.', 'e', 'E': return lexFloat + case 'b': + r = lx.peek() + if !isBinary(r) { + lx.errorf("not a binary number: '%s%c'", lx.current(), r) + } + return lexBinaryInteger + case 'o': + r = lx.peek() + if !isOctal(r) { + lx.errorf("not an octal number: '%s%c'", lx.current(), r) + } + return lexOctalInteger + case 'x': + r = lx.peek() + if !isHexadecimal(r) { + lx.errorf("not a hexidecimal number: '%s%c'", lx.current(), r) + } + return lexHexInteger } lx.backup() @@ -867,21 +1103,22 @@ func lexCommentStart(lx *lexer) stateFn { // It will consume *up to* the first newline character, and pass control // back to the last state on the stack. func lexComment(lx *lexer) stateFn { - r := lx.peek() - if isNL(r) || r == eof { + switch r := lx.next(); { + case isNL(r) || r == eof: + lx.backup() lx.emit(itemText) return lx.pop() + case isControl(r): + return lx.errorf("control characters are not allowed inside comments: '0x%02x'", r) + default: + return lexComment } - lx.next() - return lexComment } // lexSkip ignores all slurped input and moves on to the next state. func lexSkip(lx *lexer, nextState stateFn) stateFn { - return func(lx *lexer) stateFn { - lx.ignore() - return nextState - } + lx.ignore() + return nextState } // isWhitespace returns true if `r` is a whitespace character according @@ -894,6 +1131,16 @@ func isNL(r rune) bool { return r == '\n' || r == '\r' } +// Control characters except \n, \t +func isControl(r rune) bool { + switch r { + case '\t', '\r', '\n': + return false + default: + return (r >= 0x00 && r <= 0x1f) || r == 0x7f + } +} + func isDigit(r rune) bool { return r >= '0' && r <= '9' } @@ -904,6 +1151,14 @@ func isHexadecimal(r rune) bool { (r >= 'A' && r <= 'F') } +func isOctal(r rune) bool { + return r >= '0' && r <= '7' +} + +func isBinary(r rune) bool { + return r == '0' || r == '1' +} + func isBareKeyChar(r rune) bool { return (r >= 'A' && r <= 'Z') || (r >= 'a' && r <= 'z') || @@ -912,6 +1167,17 @@ func isBareKeyChar(r rune) bool { r == '-' } +func (s stateFn) String() string { + name := runtime.FuncForPC(reflect.ValueOf(s).Pointer()).Name() + if i := strings.LastIndexByte(name, '.'); i > -1 { + name = name[i+1:] + } + if s == nil { + name = "<nil>" + } + return name + "()" +} + func (itype itemType) String() string { switch itype { case itemError: @@ -938,12 +1204,18 @@ func (itype itemType) String() string { return "TableEnd" case itemKeyStart: return "KeyStart" + case itemKeyEnd: + return "KeyEnd" case itemArray: return "Array" case itemArrayEnd: return "ArrayEnd" case itemCommentStart: return "CommentStart" + case itemInlineTableStart: + return "InlineTableStart" + case itemInlineTableEnd: + return "InlineTableEnd" } panic(fmt.Sprintf("BUG: Unknown type '%d'.", int(itype))) } diff --git a/vendor/github.com/BurntSushi/toml/parse.go b/vendor/github.com/BurntSushi/toml/parse.go index 50869ef92..d9ae5db94 100644 --- a/vendor/github.com/BurntSushi/toml/parse.go +++ b/vendor/github.com/BurntSushi/toml/parse.go @@ -1,12 +1,14 @@ package toml import ( + "errors" "fmt" "strconv" "strings" "time" - "unicode" "unicode/utf8" + + "github.com/BurntSushi/toml/internal" ) type parser struct { @@ -14,39 +16,54 @@ type parser struct { types map[string]tomlType lx *lexer - // A list of keys in the order that they appear in the TOML data. - ordered []Key - - // the full key for the current hash in scope - context Key - - // the base key name for everything except hashes - currentKey string - - // rough approximation of line number - approxLine int - - // A map of 'key.group.names' to whether they were created implicitly. - implicits map[string]bool + ordered []Key // List of keys in the order that they appear in the TOML data. + context Key // Full key for the current hash in scope. + currentKey string // Base key name for everything except hashes. + approxLine int // Rough approximation of line number + implicits map[string]bool // Record implied keys (e.g. 'key.group.names'). } -type parseError string +// ParseError is used when a file can't be parsed: for example invalid integer +// literals, duplicate keys, etc. +type ParseError struct { + Message string + Line int + LastKey string +} -func (pe parseError) Error() string { - return string(pe) +func (pe ParseError) Error() string { + return fmt.Sprintf("Near line %d (last key parsed '%s'): %s", + pe.Line, pe.LastKey, pe.Message) } func parse(data string) (p *parser, err error) { defer func() { if r := recover(); r != nil { var ok bool - if err, ok = r.(parseError); ok { + if err, ok = r.(ParseError); ok { return } panic(r) } }() + // Read over BOM; do this here as the lexer calls utf8.DecodeRuneInString() + // which mangles stuff. + if strings.HasPrefix(data, "\xff\xfe") || strings.HasPrefix(data, "\xfe\xff") { + data = data[2:] + } + + // Examine first few bytes for NULL bytes; this probably means it's a UTF-16 + // file (second byte in surrogate pair being NULL). Again, do this here to + // avoid having to deal with UTF-8/16 stuff in the lexer. + ex := 6 + if len(data) < 6 { + ex = len(data) + } + if strings.ContainsRune(data[:ex], 0) { + return nil, errors.New("files cannot contain NULL bytes; probably using UTF-16; TOML files must be UTF-8") + } + p = &parser{ mapping: make(map[string]interface{}), types: make(map[string]tomlType), @@ -66,13 +83,17 @@ func parse(data string) (p *parser, err error) { } func (p *parser) panicf(format string, v ...interface{}) { - msg := fmt.Sprintf("Near line %d (last key parsed '%s'): %s", - p.approxLine, p.current(), fmt.Sprintf(format, v...)) - panic(parseError(msg)) + msg := fmt.Sprintf(format, v...) + panic(ParseError{ + Message: msg, + Line: p.approxLine, + LastKey: p.current(), + }) } func (p *parser) next() item { it := p.lx.nextItem() + //fmt.Printf("ITEM %-18s line %-3d │ %q\n", it.typ, it.line, it.val) if it.typ == itemError { p.panicf("%s", it.val) } @@ -97,44 +118,63 @@ func (p *parser) assertEqual(expected, got itemType) { func (p *parser) topLevel(item item) { switch item.typ { - case itemCommentStart: + case itemCommentStart: // # .. p.approxLine = item.line p.expect(itemText) - case itemTableStart: - kg := p.next() - p.approxLine = kg.line + case itemTableStart: // [ .. ] + name := p.next() + p.approxLine = name.line var key Key - for ; kg.typ != itemTableEnd && kg.typ != itemEOF; kg = p.next() { - key = append(key, p.keyString(kg)) + for ; name.typ != itemTableEnd && name.typ != itemEOF; name = p.next() { + key = append(key, p.keyString(name)) } - p.assertEqual(itemTableEnd, kg.typ) + p.assertEqual(itemTableEnd, name.typ) - p.establishContext(key, false) + p.addContext(key, false) p.setType("", tomlHash) p.ordered = append(p.ordered, key) - case itemArrayTableStart: - kg := p.next() - p.approxLine = kg.line + case itemArrayTableStart: // [[ .. ]] + name := p.next() + p.approxLine = name.line var key Key - for ; kg.typ != itemArrayTableEnd && kg.typ != itemEOF; kg = p.next() { - key = append(key, p.keyString(kg)) + for ; name.typ != itemArrayTableEnd && name.typ != itemEOF; name = p.next() { + key = append(key, p.keyString(name)) } - p.assertEqual(itemArrayTableEnd, kg.typ) + p.assertEqual(itemArrayTableEnd, name.typ) - p.establishContext(key, true) + p.addContext(key, true) p.setType("", tomlArrayHash) p.ordered = append(p.ordered, key) - case itemKeyStart: - kname := p.next() - p.approxLine = kname.line - p.currentKey = p.keyString(kname) - - val, typ := p.value(p.next()) - p.setValue(p.currentKey, val) - p.setType(p.currentKey, typ) + case itemKeyStart: // key = .. + outerContext := p.context + /// Read all the key parts (e.g. 'a' and 'b' in 'a.b') + k := p.next() + p.approxLine = k.line + var key Key + for ; k.typ != itemKeyEnd && k.typ != itemEOF; k = p.next() { + key = append(key, p.keyString(k)) + } + p.assertEqual(itemKeyEnd, k.typ) + + /// The current key is the last part. + p.currentKey = key[len(key)-1] + + /// All the other parts (if any) are the context; need to set each part + /// as implicit. + context := key[:len(key)-1] + for i := range context { + p.addImplicitContext(append(p.context, context[i:i+1]...)) + } + + /// Set value. + val, typ := p.value(p.next(), false) + p.set(p.currentKey, val, typ) p.ordered = append(p.ordered, p.context.add(p.currentKey)) + + /// Remove the context we added (preserving any context from [tbl] lines). + p.context = outerContext p.currentKey = "" default: p.bug("Unexpected type at top level: %s", item.typ) @@ -148,180 +188,253 @@ func (p *parser) keyString(it item) string { return it.val case itemString, itemMultilineString, itemRawString, itemRawMultilineString: - s, _ := p.value(it) + s, _ := p.value(it, false) return s.(string) default: p.bug("Unexpected key type: %s", it.typ) - panic("unreachable") } + panic("unreachable") } +var datetimeRepl = strings.NewReplacer( + "z", "Z", + "t", "T", + " ", "T") + // value translates an expected value from the lexer into a Go value wrapped // as an empty interface. -func (p *parser) value(it item) (interface{}, tomlType) { +func (p *parser) value(it item, parentIsArray bool) (interface{}, tomlType) { switch it.typ { case itemString: return p.replaceEscapes(it.val), p.typeOfPrimitive(it) case itemMultilineString: - trimmed := stripFirstNewline(stripEscapedWhitespace(it.val)) - return p.replaceEscapes(trimmed), p.typeOfPrimitive(it) + return p.replaceEscapes(stripFirstNewline(stripEscapedNewlines(it.val))), p.typeOfPrimitive(it) case itemRawString: return it.val, p.typeOfPrimitive(it) case itemRawMultilineString: return stripFirstNewline(it.val), p.typeOfPrimitive(it) + case itemInteger: + return p.valueInteger(it) + case itemFloat: + return p.valueFloat(it) case itemBool: switch it.val { case "true": return true, p.typeOfPrimitive(it) case "false": return false, p.typeOfPrimitive(it) + default: + p.bug("Expected boolean value, but got '%s'.", it.val) } - p.bug("Expected boolean value, but got '%s'.", it.val) - case itemInteger: - if !numUnderscoresOK(it.val) { - p.panicf("Invalid integer %q: underscores must be surrounded by digits", - it.val) - } - val := strings.Replace(it.val, "_", "", -1) - num, err := strconv.ParseInt(val, 10, 64) - if err != nil { - // Distinguish integer values. Normally, it'd be a bug if the lexer - // provides an invalid integer, but it's possible that the number is - // out of range of valid values (which the lexer cannot determine). - // So mark the former as a bug but the latter as a legitimate user - // error. - if e, ok := err.(*strconv.NumError); ok && - e.Err == strconv.ErrRange { - - p.panicf("Integer '%s' is out of the range of 64-bit "+ - "signed integers.", it.val) - } else { - p.bug("Expected integer value, but got '%s'.", it.val) - } + case itemDatetime: + return p.valueDatetime(it) + case itemArray: + return p.valueArray(it) + case itemInlineTableStart: + return p.valueInlineTable(it, parentIsArray) + default: + p.bug("Unexpected value type: %s", it.typ) + } + panic("unreachable") +} + +func (p *parser) valueInteger(it item) (interface{}, tomlType) { + if !numUnderscoresOK(it.val) { + p.panicf("Invalid integer %q: underscores must be surrounded by digits", it.val) + } + if numHasLeadingZero(it.val) { + p.panicf("Invalid integer %q: cannot have leading zeroes", it.val) + } + + num, err := strconv.ParseInt(it.val, 0, 64) + if err != nil { + // Distinguish integer values. Normally, it'd be a bug if the lexer + // provides an invalid integer, but it's possible that the number is + // out of range of valid values (which the lexer cannot determine). + // So mark the former as a bug but the latter as a legitimate user + // error. + if e, ok := err.(*strconv.NumError); ok && e.Err == strconv.ErrRange { + p.panicf("Integer '%s' is out of the range of 64-bit signed integers.", it.val) + } else { + p.bug("Expected integer value, but got '%s'.", it.val) } - return num, p.typeOfPrimitive(it) - case itemFloat: - parts := strings.FieldsFunc(it.val, func(r rune) bool { - switch r { - case '.', 'e', 'E': - return true - } - return false - }) - for _, part := range parts { - if !numUnderscoresOK(part) { - p.panicf("Invalid float %q: underscores must be "+ - "surrounded by digits", it.val) - } + } + return num, p.typeOfPrimitive(it) +} + +func (p *parser) valueFloat(it item) (interface{}, tomlType) { + parts := strings.FieldsFunc(it.val, func(r rune) bool { + switch r { + case '.', 'e', 'E': + return true } - if !numPeriodsOK(it.val) { - // As a special case, numbers like '123.' or '1.e2', - // which are valid as far as Go/strconv are concerned, - // must be rejected because TOML says that a fractional - // part consists of '.' followed by 1+ digits. - p.panicf("Invalid float %q: '.' must be followed "+ - "by one or more digits", it.val) - } - val := strings.Replace(it.val, "_", "", -1) - num, err := strconv.ParseFloat(val, 64) - if err != nil { - if e, ok := err.(*strconv.NumError); ok && - e.Err == strconv.ErrRange { - - p.panicf("Float '%s' is out of the range of 64-bit "+ - "IEEE-754 floating-point numbers.", it.val) - } else { - p.panicf("Invalid float value: %q", it.val) - } + return false + }) + for _, part := range parts { + if !numUnderscoresOK(part) { + p.panicf("Invalid float %q: underscores must be surrounded by digits", it.val) } - return num, p.typeOfPrimitive(it) - case itemDatetime: - var t time.Time - var ok bool - var err error - for _, format := range []string{ - "2006-01-02T15:04:05Z07:00", - "2006-01-02T15:04:05", - "2006-01-02", - } { - t, err = time.ParseInLocation(format, it.val, time.Local) - if err == nil { - ok = true - break - } + } + if len(parts) > 0 && numHasLeadingZero(parts[0]) { + p.panicf("Invalid float %q: cannot have leading zeroes", it.val) + } + if !numPeriodsOK(it.val) { + // As a special case, numbers like '123.' or '1.e2', + // which are valid as far as Go/strconv are concerned, + // must be rejected because TOML says that a fractional + // part consists of '.' followed by 1+ digits. + p.panicf("Invalid float %q: '.' must be followed by one or more digits", it.val) + } + val := strings.Replace(it.val, "_", "", -1) + if val == "+nan" || val == "-nan" { // Go doesn't support this, but TOML spec does. + val = "nan" + } + num, err := strconv.ParseFloat(val, 64) + if err != nil { + if e, ok := err.(*strconv.NumError); ok && e.Err == strconv.ErrRange { + p.panicf("Float '%s' is out of the range of 64-bit IEEE-754 floating-point numbers.", it.val) + } else { + p.panicf("Invalid float value: %q", it.val) } - if !ok { - p.panicf("Invalid TOML Datetime: %q.", it.val) + } + return num, p.typeOfPrimitive(it) +} + +var dtTypes = []struct { + fmt string + zone *time.Location +}{ + {time.RFC3339Nano, time.Local}, + {"2006-01-02T15:04:05.999999999", internal.LocalDatetime}, + {"2006-01-02", internal.LocalDate}, + {"15:04:05.999999999", internal.LocalTime}, +} + +func (p *parser) valueDatetime(it item) (interface{}, tomlType) { + it.val = datetimeRepl.Replace(it.val) + var ( + t time.Time + ok bool + err error + ) + for _, dt := range dtTypes { + t, err = time.ParseInLocation(dt.fmt, it.val, dt.zone) + if err == nil { + ok = true + break } - return t, p.typeOfPrimitive(it) - case itemArray: - array := make([]interface{}, 0) - types := make([]tomlType, 0) + } + if !ok { + p.panicf("Invalid TOML Datetime: %q.", it.val) + } + return t, p.typeOfPrimitive(it) +} - for it = p.next(); it.typ != itemArrayEnd; it = p.next() { - if it.typ == itemCommentStart { - p.expect(itemText) - continue - } +func (p *parser) valueArray(it item) (interface{}, tomlType) { + p.setType(p.currentKey, tomlArray) + + // p.setType(p.currentKey, typ) + var ( + array []interface{} + types []tomlType + ) + for it = p.next(); it.typ != itemArrayEnd; it = p.next() { + if it.typ == itemCommentStart { + p.expect(itemText) + continue + } + + val, typ := p.value(it, true) + array = append(array, val) + types = append(types, typ) + } + return array, tomlArray +} + +func (p *parser) valueInlineTable(it item, parentIsArray bool) (interface{}, tomlType) { + var ( + hash = make(map[string]interface{}) + outerContext = p.context + outerKey = p.currentKey + ) + + p.context = append(p.context, p.currentKey) + prevContext := p.context + p.currentKey = "" + + p.addImplicit(p.context) + p.addContext(p.context, parentIsArray) - val, typ := p.value(it) - array = append(array, val) - types = append(types, typ) + /// Loop over all table key/value pairs. + for it := p.next(); it.typ != itemInlineTableEnd; it = p.next() { + if it.typ == itemCommentStart { + p.expect(itemText) + continue } - return array, p.typeOfArray(types) - case itemInlineTableStart: - var ( - hash = make(map[string]interface{}) - outerContext = p.context - outerKey = p.currentKey - ) - p.context = append(p.context, p.currentKey) - p.currentKey = "" - for it := p.next(); it.typ != itemInlineTableEnd; it = p.next() { - if it.typ != itemKeyStart { - p.bug("Expected key start but instead found %q, around line %d", - it.val, p.approxLine) - } - if it.typ == itemCommentStart { - p.expect(itemText) - continue - } + /// Read all key parts. + k := p.next() + p.approxLine = k.line + var key Key + for ; k.typ != itemKeyEnd && k.typ != itemEOF; k = p.next() { + key = append(key, p.keyString(k)) + } + p.assertEqual(itemKeyEnd, k.typ) - // retrieve key - k := p.next() - p.approxLine = k.line - kname := p.keyString(k) + /// The current key is the last part. + p.currentKey = key[len(key)-1] - // retrieve value - p.currentKey = kname - val, typ := p.value(p.next()) - // make sure we keep metadata up to date - p.setType(kname, typ) - p.ordered = append(p.ordered, p.context.add(p.currentKey)) - hash[kname] = val + /// All the other parts (if any) are the context; need to set each part + /// as implicit. + context := key[:len(key)-1] + for i := range context { + p.addImplicitContext(append(p.context, context[i:i+1]...)) } - p.context = outerContext - p.currentKey = outerKey - return hash, tomlHash + + /// Set the value. + val, typ := p.value(p.next(), false) + p.set(p.currentKey, val, typ) + p.ordered = append(p.ordered, p.context.add(p.currentKey)) + hash[p.currentKey] = val + + /// Restore context. + p.context = prevContext } - p.bug("Unexpected value type: %s", it.typ) - panic("unreachable") + p.context = outerContext + p.currentKey = outerKey + return hash, tomlHash +} + +// numHasLeadingZero checks if this number has leading zeroes, allowing for '0', +// +/- signs, and base prefixes. +func numHasLeadingZero(s string) bool { + if len(s) > 1 && s[0] == '0' && isDigit(rune(s[1])) { // >1 to allow "0" and isDigit to allow 0x + return true + } + if len(s) > 2 && (s[0] == '-' || s[0] == '+') && s[1] == '0' { + return true + } + return false } // numUnderscoresOK checks whether each underscore in s is surrounded by // characters that are not underscores. func numUnderscoresOK(s string) bool { + switch s { + case "nan", "+nan", "-nan", "inf", "-inf", "+inf": + return true + } accept := false for _, r := range s { if r == '_' { if !accept { return false } - accept = false - continue } - accept = true + + // isHexadecimal is a superset of all the permissable characters + // surrounding an underscore. + accept = isHexadecimal(r) } return accept } @@ -338,13 +451,12 @@ func numPeriodsOK(s string) bool { return !period } -// establishContext sets the current context of the parser, -// where the context is either a hash or an array of hashes. Which one is -// set depends on the value of the `array` parameter. +// Set the current context of the parser, where the context is either a hash or +// an array of hashes, depending on the value of the `array` parameter. // // Establishing the context also makes sure that the key isn't a duplicate, and // will create implicit hashes automatically. -func (p *parser) establishContext(key Key, array bool) { +func (p *parser) addContext(key Key, array bool) { var ok bool // Always start at the top level and drill down for our context. @@ -383,7 +495,7 @@ func (p *parser) establishContext(key Key, array bool) { // list of tables for it. k := key[len(key)-1] if _, ok := hashContext[k]; !ok { - hashContext[k] = make([]map[string]interface{}, 0, 5) + hashContext[k] = make([]map[string]interface{}, 0, 4) } // Add a new table. But make sure the key hasn't already been used @@ -391,8 +503,7 @@ func (p *parser) establishContext(key Key, array bool) { if hash, ok := hashContext[k].([]map[string]interface{}); ok { hashContext[k] = append(hash, make(map[string]interface{})) } else { - p.panicf("Key '%s' was already created and cannot be used as "+ - "an array.", keyContext) + p.panicf("Key '%s' was already created and cannot be used as an array.", keyContext) } } else { p.setValue(key[len(key)-1], make(map[string]interface{})) @@ -400,15 +511,22 @@ func (p *parser) establishContext(key Key, array bool) { p.context = append(p.context, key[len(key)-1]) } +// set calls setValue and setType. +func (p *parser) set(key string, val interface{}, typ tomlType) { + p.setValue(p.currentKey, val) + p.setType(p.currentKey, typ) +} + // setValue sets the given key to the given value in the current context. // It will make sure that the key hasn't already been defined, account for // implicit key groups. func (p *parser) setValue(key string, value interface{}) { - var tmpHash interface{} - var ok bool - - hash := p.mapping - keyContext := make(Key, 0) + var ( + tmpHash interface{} + ok bool + hash = p.mapping + keyContext Key + ) for _, k := range p.context { keyContext = append(keyContext, k) if tmpHash, ok = hash[k]; !ok { @@ -422,24 +540,26 @@ func (p *parser) setValue(key string, value interface{}) { case map[string]interface{}: hash = t default: - p.bug("Expected hash to have type 'map[string]interface{}', but "+ - "it has '%T' instead.", tmpHash) + p.panicf("Key '%s' has already been defined.", keyContext) } } keyContext = append(keyContext, key) if _, ok := hash[key]; ok { - // Typically, if the given key has already been set, then we have - // to raise an error since duplicate keys are disallowed. However, - // it's possible that a key was previously defined implicitly. In this - // case, it is allowed to be redefined concretely. (See the - // `tests/valid/implicit-and-explicit-after.toml` test in `toml-test`.) + // Normally redefining keys isn't allowed, but the key could have been + // defined implicitly and it's allowed to be redefined concretely. (See + // the `valid/implicit-and-explicit-after.toml` in toml-test) // // But we have to make sure to stop marking it as an implicit. (So that // another redefinition provokes an error.) // // Note that since it has already been defined (as a hash), we don't // want to overwrite it. So our business is done. + if p.isArray(keyContext) { + p.removeImplicit(keyContext) + hash[key] = value + return + } if p.isImplicit(keyContext) { p.removeImplicit(keyContext) return @@ -449,6 +569,7 @@ func (p *parser) setValue(key string, value interface{}) { // key, which is *always* wrong. p.panicf("Key '%s' has already been defined.", keyContext) } + hash[key] = value } @@ -468,21 +589,15 @@ func (p *parser) setType(key string, typ tomlType) { p.types[keyContext.String()] = typ } -// addImplicit sets the given Key as having been created implicitly. -func (p *parser) addImplicit(key Key) { - p.implicits[key.String()] = true -} - -// removeImplicit stops tagging the given key as having been implicitly -// created. -func (p *parser) removeImplicit(key Key) { - p.implicits[key.String()] = false -} - -// isImplicit returns true if the key group pointed to by the key was created -// implicitly. -func (p *parser) isImplicit(key Key) bool { - return p.implicits[key.String()] +// Implicit keys need to be created when tables are implied in "a.b.c.d = 1" and +// "[a.b.c]" (the "a", "b", and "c" hashes are never created explicitly). +func (p *parser) addImplicit(key Key) { p.implicits[key.String()] = true } +func (p *parser) removeImplicit(key Key) { p.implicits[key.String()] = false } +func (p *parser) isImplicit(key Key) bool { return p.implicits[key.String()] } +func (p *parser) isArray(key Key) bool { return p.types[key.String()] == tomlArray } +func (p *parser) addImplicitContext(key Key) { + p.addImplicit(key) + p.addContext(key, false) } // current returns the full key name of the current context. @@ -497,20 +612,54 @@ func (p *parser) current() string { } func stripFirstNewline(s string) string { - if len(s) == 0 || s[0] != '\n' { - return s + if len(s) > 0 && s[0] == '\n' { + return s[1:] + } + if len(s) > 1 && s[0] == '\r' && s[1] == '\n' { + return s[2:] } - return s[1:] + return s } -func stripEscapedWhitespace(s string) string { - esc := strings.Split(s, "\\\n") - if len(esc) > 1 { - for i := 1; i < len(esc); i++ { - esc[i] = strings.TrimLeftFunc(esc[i], unicode.IsSpace) +// Remove newlines inside triple-quoted strings if a line ends with "\". +func stripEscapedNewlines(s string) string { + split := strings.Split(s, "\n") + if len(split) < 1 { + return s + } + + escNL := false // Keep track of the last non-blank line was escaped. + for i, line := range split { + line = strings.TrimRight(line, " \t\r") + + if len(line) == 0 || line[len(line)-1] != '\\' { + split[i] = strings.TrimRight(split[i], "\r") + if !escNL && i != len(split)-1 { + split[i] += "\n" + } + continue + } + + escBS := true + for j := len(line) - 1; j >= 0 && line[j] == '\\'; j-- { + escBS = !escBS + } + if escNL { + line = strings.TrimLeft(line, " \t\r") + } + escNL = !escBS + + if escBS { + split[i] += "\n" + continue + } + + split[i] = line[:len(line)-1] // Remove \ + if len(split)-1 > i { + split[i+1] = strings.TrimLeft(split[i+1], " \t\r") } } - return strings.Join(esc, "") + return strings.Join(split, "") } func (p *parser) replaceEscapes(str string) string { @@ -533,6 +682,9 @@ func (p *parser) replaceEscapes(str string) string { default: p.bug("Expected valid escape code after \\, but got %q.", s[r]) return "" + case ' ', '\t': + p.panicf("invalid escape: '\\%c'", s[r]) + return "" case 'b': replaced = append(replaced, rune(0x0008)) r += 1 @@ -585,8 +737,3 @@ func (p *parser) asciiEscapeToUnicode(bs []byte) rune { } return rune(hex) } - -func isStringType(ty itemType) bool { - return ty == itemString || ty == itemMultilineString || - ty == itemRawString || ty == itemRawMultilineString -} diff --git a/vendor/github.com/BurntSushi/toml/session.vim b/vendor/github.com/BurntSushi/toml/session.vim deleted file mode 100644 index 562164be0..000000000 --- a/vendor/github.com/BurntSushi/toml/session.vim +++ /dev/null @@ -1 +0,0 @@ -au BufWritePost *.go silent!make tags > /dev/null 2>&1 diff --git a/vendor/github.com/BurntSushi/toml/type_check.go b/vendor/github.com/BurntSushi/toml/type_check.go index c73f8afc1..d56aa80fa 100644 --- a/vendor/github.com/BurntSushi/toml/type_check.go +++ b/vendor/github.com/BurntSushi/toml/type_check.go @@ -68,24 +68,3 @@ func (p *parser) typeOfPrimitive(lexItem item) tomlType { p.bug("Cannot infer primitive type of lex item '%s'.", lexItem) panic("unreachable") } - -// typeOfArray returns a tomlType for an array given a list of types of its -// values. -// -// In the current spec, if an array is homogeneous, then its type is always -// "Array". If the array is not homogeneous, an error is generated. -func (p *parser) typeOfArray(types []tomlType) tomlType { - // Empty arrays are cool. - if len(types) == 0 { - return tomlArray - } - - theType := types[0] - for _, t := range types[1:] { - if !typeEqual(theType, t) { - p.panicf("Array contains values of type '%s' and '%s', but "+ - "arrays must be homogeneous.", theType, t) - } - } - return tomlArray -} |