diff options
Diffstat (limited to 'vendor/github.com/mailru/easyjson/gen')
| -rw-r--r-- | vendor/github.com/mailru/easyjson/gen/decoder.go | 489 | ||||
| -rw-r--r-- | vendor/github.com/mailru/easyjson/gen/encoder.go | 382 | ||||
| -rw-r--r-- | vendor/github.com/mailru/easyjson/gen/generator.go | 523 | ||||
| -rw-r--r-- | vendor/github.com/mailru/easyjson/gen/generator_test.go | 87 |
4 files changed, 1481 insertions, 0 deletions
diff --git a/vendor/github.com/mailru/easyjson/gen/decoder.go b/vendor/github.com/mailru/easyjson/gen/decoder.go new file mode 100644 index 000000000..021933ac8 --- /dev/null +++ b/vendor/github.com/mailru/easyjson/gen/decoder.go @@ -0,0 +1,489 @@ +package gen + +import ( + "encoding" + "encoding/json" + "fmt" + "reflect" + "strings" + "unicode" + + "github.com/mailru/easyjson" +) + +// Target this byte size for initial slice allocation to reduce garbage collection. +const minSliceBytes = 64 + +func (g *Generator) getDecoderName(t reflect.Type) string { + return g.functionName("decode", t) +} + +var primitiveDecoders = map[reflect.Kind]string{ + reflect.String: "in.String()", + reflect.Bool: "in.Bool()", + reflect.Int: "in.Int()", + reflect.Int8: "in.Int8()", + reflect.Int16: "in.Int16()", + reflect.Int32: "in.Int32()", + reflect.Int64: "in.Int64()", + reflect.Uint: "in.Uint()", + reflect.Uint8: "in.Uint8()", + reflect.Uint16: "in.Uint16()", + reflect.Uint32: "in.Uint32()", + reflect.Uint64: "in.Uint64()", + reflect.Float32: "in.Float32()", + reflect.Float64: "in.Float64()", +} + +var primitiveStringDecoders = map[reflect.Kind]string{ + reflect.String: "in.String()", + reflect.Int: "in.IntStr()", + reflect.Int8: "in.Int8Str()", + reflect.Int16: "in.Int16Str()", + reflect.Int32: "in.Int32Str()", + reflect.Int64: "in.Int64Str()", + reflect.Uint: "in.UintStr()", + reflect.Uint8: "in.Uint8Str()", + reflect.Uint16: "in.Uint16Str()", + reflect.Uint32: "in.Uint32Str()", + reflect.Uint64: "in.Uint64Str()", + reflect.Uintptr: "in.UintptrStr()", +} + +var customDecoders = map[string]string{ + "json.Number": "in.JsonNumber()", +} + +// genTypeDecoder generates decoding code for the type t, but uses unmarshaler interface if implemented by t. +func (g *Generator) genTypeDecoder(t reflect.Type, out string, tags fieldTags, indent int) error { + ws := strings.Repeat(" ", indent) + + unmarshalerIface := reflect.TypeOf((*easyjson.Unmarshaler)(nil)).Elem() + if reflect.PtrTo(t).Implements(unmarshalerIface) { + fmt.Fprintln(g.out, ws+"("+out+").UnmarshalEasyJSON(in)") + return nil + } + + unmarshalerIface = reflect.TypeOf((*json.Unmarshaler)(nil)).Elem() + if reflect.PtrTo(t).Implements(unmarshalerIface) { + fmt.Fprintln(g.out, ws+"if data := in.Raw(); in.Ok() {") + fmt.Fprintln(g.out, ws+" in.AddError( ("+out+").UnmarshalJSON(data) )") + fmt.Fprintln(g.out, ws+"}") + return nil + } + + unmarshalerIface = reflect.TypeOf((*encoding.TextUnmarshaler)(nil)).Elem() + if reflect.PtrTo(t).Implements(unmarshalerIface) { + fmt.Fprintln(g.out, ws+"if data := in.UnsafeBytes(); in.Ok() {") + fmt.Fprintln(g.out, ws+" in.AddError( ("+out+").UnmarshalText(data) )") + fmt.Fprintln(g.out, ws+"}") + return nil + } + + err := g.genTypeDecoderNoCheck(t, out, tags, indent) + return err +} + +// genTypeDecoderNoCheck generates decoding code for the type t. +func (g *Generator) genTypeDecoderNoCheck(t reflect.Type, out string, tags fieldTags, indent int) error { + ws := strings.Repeat(" ", indent) + // Check whether type is primitive, needs to be done after interface check. + if dec := customDecoders[t.String()]; dec != "" { + fmt.Fprintln(g.out, ws+out+" = "+dec) + return nil + } else if dec := primitiveStringDecoders[t.Kind()]; dec != "" && tags.asString { + fmt.Fprintln(g.out, ws+out+" = "+g.getType(t)+"("+dec+")") + return nil + } else if dec := primitiveDecoders[t.Kind()]; dec != "" { + fmt.Fprintln(g.out, ws+out+" = "+g.getType(t)+"("+dec+")") + return nil + } + + switch t.Kind() { + case reflect.Slice: + tmpVar := g.uniqueVarName() + elem := t.Elem() + + if elem.Kind() == reflect.Uint8 { + fmt.Fprintln(g.out, ws+"if in.IsNull() {") + fmt.Fprintln(g.out, ws+" in.Skip()") + fmt.Fprintln(g.out, ws+" "+out+" = nil") + fmt.Fprintln(g.out, ws+"} else {") + fmt.Fprintln(g.out, ws+" "+out+" = in.Bytes()") + fmt.Fprintln(g.out, ws+"}") + + } else { + + capacity := minSliceBytes / elem.Size() + if capacity == 0 { + capacity = 1 + } + + fmt.Fprintln(g.out, ws+"if in.IsNull() {") + fmt.Fprintln(g.out, ws+" in.Skip()") + fmt.Fprintln(g.out, ws+" "+out+" = nil") + fmt.Fprintln(g.out, ws+"} else {") + fmt.Fprintln(g.out, ws+" in.Delim('[')") + fmt.Fprintln(g.out, ws+" if "+out+" == nil {") + fmt.Fprintln(g.out, ws+" if !in.IsDelim(']') {") + fmt.Fprintln(g.out, ws+" "+out+" = make("+g.getType(t)+", 0, "+fmt.Sprint(capacity)+")") + fmt.Fprintln(g.out, ws+" } else {") + fmt.Fprintln(g.out, ws+" "+out+" = "+g.getType(t)+"{}") + fmt.Fprintln(g.out, ws+" }") + fmt.Fprintln(g.out, ws+" } else { ") + fmt.Fprintln(g.out, ws+" "+out+" = ("+out+")[:0]") + fmt.Fprintln(g.out, ws+" }") + fmt.Fprintln(g.out, ws+" for !in.IsDelim(']') {") + fmt.Fprintln(g.out, ws+" var "+tmpVar+" "+g.getType(elem)) + + if err := g.genTypeDecoder(elem, tmpVar, tags, indent+2); err != nil { + return err + } + + fmt.Fprintln(g.out, ws+" "+out+" = append("+out+", "+tmpVar+")") + fmt.Fprintln(g.out, ws+" in.WantComma()") + fmt.Fprintln(g.out, ws+" }") + fmt.Fprintln(g.out, ws+" in.Delim(']')") + fmt.Fprintln(g.out, ws+"}") + } + + case reflect.Array: + iterVar := g.uniqueVarName() + elem := t.Elem() + + if elem.Kind() == reflect.Uint8 { + fmt.Fprintln(g.out, ws+"if in.IsNull() {") + fmt.Fprintln(g.out, ws+" in.Skip()") + fmt.Fprintln(g.out, ws+"} else {") + fmt.Fprintln(g.out, ws+" copy("+out+"[:], in.Bytes())") + fmt.Fprintln(g.out, ws+"}") + + } else { + + length := t.Len() + + fmt.Fprintln(g.out, ws+"if in.IsNull() {") + fmt.Fprintln(g.out, ws+" in.Skip()") + fmt.Fprintln(g.out, ws+"} else {") + fmt.Fprintln(g.out, ws+" in.Delim('[')") + fmt.Fprintln(g.out, ws+" "+iterVar+" := 0") + fmt.Fprintln(g.out, ws+" for !in.IsDelim(']') {") + fmt.Fprintln(g.out, ws+" if "+iterVar+" < "+fmt.Sprint(length)+" {") + + if err := g.genTypeDecoder(elem, out+"["+iterVar+"]", tags, indent+3); err != nil { + return err + } + + fmt.Fprintln(g.out, ws+" "+iterVar+"++") + fmt.Fprintln(g.out, ws+" } else {") + fmt.Fprintln(g.out, ws+" in.SkipRecursive()") + fmt.Fprintln(g.out, ws+" }") + fmt.Fprintln(g.out, ws+" in.WantComma()") + fmt.Fprintln(g.out, ws+" }") + fmt.Fprintln(g.out, ws+" in.Delim(']')") + fmt.Fprintln(g.out, ws+"}") + } + + case reflect.Struct: + dec := g.getDecoderName(t) + g.addType(t) + + fmt.Fprintln(g.out, ws+dec+"(in, &"+out+")") + + case reflect.Ptr: + fmt.Fprintln(g.out, ws+"if in.IsNull() {") + fmt.Fprintln(g.out, ws+" in.Skip()") + fmt.Fprintln(g.out, ws+" "+out+" = nil") + fmt.Fprintln(g.out, ws+"} else {") + fmt.Fprintln(g.out, ws+" if "+out+" == nil {") + fmt.Fprintln(g.out, ws+" "+out+" = new("+g.getType(t.Elem())+")") + fmt.Fprintln(g.out, ws+" }") + + if err := g.genTypeDecoder(t.Elem(), "*"+out, tags, indent+1); err != nil { + return err + } + + fmt.Fprintln(g.out, ws+"}") + + case reflect.Map: + key := t.Key() + keyDec, ok := primitiveStringDecoders[key.Kind()] + if !ok { + return fmt.Errorf("map type %v not supported: only string and integer keys are allowed", key) + } + elem := t.Elem() + tmpVar := g.uniqueVarName() + + fmt.Fprintln(g.out, ws+"if in.IsNull() {") + fmt.Fprintln(g.out, ws+" in.Skip()") + fmt.Fprintln(g.out, ws+"} else {") + fmt.Fprintln(g.out, ws+" in.Delim('{')") + fmt.Fprintln(g.out, ws+" if !in.IsDelim('}') {") + fmt.Fprintln(g.out, ws+" "+out+" = make("+g.getType(t)+")") + fmt.Fprintln(g.out, ws+" } else {") + fmt.Fprintln(g.out, ws+" "+out+" = nil") + fmt.Fprintln(g.out, ws+" }") + + fmt.Fprintln(g.out, ws+" for !in.IsDelim('}') {") + fmt.Fprintln(g.out, ws+" key := "+g.getType(key)+"("+keyDec+")") + fmt.Fprintln(g.out, ws+" in.WantColon()") + fmt.Fprintln(g.out, ws+" var "+tmpVar+" "+g.getType(elem)) + + if err := g.genTypeDecoder(elem, tmpVar, tags, indent+2); err != nil { + return err + } + + fmt.Fprintln(g.out, ws+" ("+out+")[key] = "+tmpVar) + fmt.Fprintln(g.out, ws+" in.WantComma()") + fmt.Fprintln(g.out, ws+" }") + fmt.Fprintln(g.out, ws+" in.Delim('}')") + fmt.Fprintln(g.out, ws+"}") + + case reflect.Interface: + if t.NumMethod() != 0 { + return fmt.Errorf("interface type %v not supported: only interface{} is allowed", t) + } + fmt.Fprintln(g.out, ws+"if m, ok := "+out+".(easyjson.Unmarshaler); ok {") + fmt.Fprintln(g.out, ws+"m.UnmarshalEasyJSON(in)") + fmt.Fprintln(g.out, ws+"} else if m, ok := "+out+".(json.Unmarshaler); ok {") + fmt.Fprintln(g.out, ws+"_ = m.UnmarshalJSON(in.Raw())") + fmt.Fprintln(g.out, ws+"} else {") + fmt.Fprintln(g.out, ws+" "+out+" = in.Interface()") + fmt.Fprintln(g.out, ws+"}") + default: + return fmt.Errorf("don't know how to decode %v", t) + } + return nil + +} + +func (g *Generator) genStructFieldDecoder(t reflect.Type, f reflect.StructField) error { + jsonName := g.fieldNamer.GetJSONFieldName(t, f) + tags := parseFieldTags(f) + + if tags.omit { + return nil + } + + fmt.Fprintf(g.out, " case %q:\n", jsonName) + if err := g.genTypeDecoder(f.Type, "out."+f.Name, tags, 3); err != nil { + return err + } + + if tags.required { + fmt.Fprintf(g.out, "%sSet = true\n", f.Name) + } + + return nil +} + +func (g *Generator) genRequiredFieldSet(t reflect.Type, f reflect.StructField) { + tags := parseFieldTags(f) + + if !tags.required { + return + } + + fmt.Fprintf(g.out, "var %sSet bool\n", f.Name) +} + +func (g *Generator) genRequiredFieldCheck(t reflect.Type, f reflect.StructField) { + jsonName := g.fieldNamer.GetJSONFieldName(t, f) + tags := parseFieldTags(f) + + if !tags.required { + return + } + + g.imports["fmt"] = "fmt" + + fmt.Fprintf(g.out, "if !%sSet {\n", f.Name) + fmt.Fprintf(g.out, " in.AddError(fmt.Errorf(\"key '%s' is required\"))\n", jsonName) + fmt.Fprintf(g.out, "}\n") +} + +func mergeStructFields(fields1, fields2 []reflect.StructField) (fields []reflect.StructField) { + used := map[string]bool{} + for _, f := range fields2 { + used[f.Name] = true + fields = append(fields, f) + } + + for _, f := range fields1 { + if !used[f.Name] { + fields = append(fields, f) + } + } + return +} + +func getStructFields(t reflect.Type) ([]reflect.StructField, error) { + if t.Kind() != reflect.Struct { + return nil, fmt.Errorf("got %v; expected a struct", t) + } + + var efields []reflect.StructField + for i := 0; i < t.NumField(); i++ { + f := t.Field(i) + if !f.Anonymous { + continue + } + + t1 := f.Type + if t1.Kind() == reflect.Ptr { + t1 = t1.Elem() + } + + fs, err := getStructFields(t1) + if err != nil { + return nil, fmt.Errorf("error processing embedded field: %v", err) + } + efields = mergeStructFields(efields, fs) + } + + var fields []reflect.StructField + for i := 0; i < t.NumField(); i++ { + f := t.Field(i) + if f.Anonymous { + continue + } + + c := []rune(f.Name)[0] + if unicode.IsUpper(c) { + fields = append(fields, f) + } + } + return mergeStructFields(efields, fields), nil +} + +func (g *Generator) genDecoder(t reflect.Type) error { + switch t.Kind() { + case reflect.Slice, reflect.Array, reflect.Map: + return g.genSliceArrayDecoder(t) + default: + return g.genStructDecoder(t) + } +} + +func (g *Generator) genSliceArrayDecoder(t reflect.Type) error { + switch t.Kind() { + case reflect.Slice, reflect.Array, reflect.Map: + default: + return fmt.Errorf("cannot generate encoder/decoder for %v, not a slice/array/map type", t) + } + + fname := g.getDecoderName(t) + typ := g.getType(t) + + fmt.Fprintln(g.out, "func "+fname+"(in *jlexer.Lexer, out *"+typ+") {") + fmt.Fprintln(g.out, " isTopLevel := in.IsStart()") + err := g.genTypeDecoderNoCheck(t, "*out", fieldTags{}, 1) + if err != nil { + return err + } + fmt.Fprintln(g.out, " if isTopLevel {") + fmt.Fprintln(g.out, " in.Consumed()") + fmt.Fprintln(g.out, " }") + fmt.Fprintln(g.out, "}") + + return nil +} + +func (g *Generator) genStructDecoder(t reflect.Type) error { + if t.Kind() != reflect.Struct { + return fmt.Errorf("cannot generate encoder/decoder for %v, not a struct type", t) + } + + fname := g.getDecoderName(t) + typ := g.getType(t) + + fmt.Fprintln(g.out, "func "+fname+"(in *jlexer.Lexer, out *"+typ+") {") + fmt.Fprintln(g.out, " isTopLevel := in.IsStart()") + fmt.Fprintln(g.out, " if in.IsNull() {") + fmt.Fprintln(g.out, " if isTopLevel {") + fmt.Fprintln(g.out, " in.Consumed()") + fmt.Fprintln(g.out, " }") + fmt.Fprintln(g.out, " in.Skip()") + fmt.Fprintln(g.out, " return") + fmt.Fprintln(g.out, " }") + + // Init embedded pointer fields. + for i := 0; i < t.NumField(); i++ { + f := t.Field(i) + if !f.Anonymous || f.Type.Kind() != reflect.Ptr { + continue + } + fmt.Fprintln(g.out, " out."+f.Name+" = new("+g.getType(f.Type.Elem())+")") + } + + fs, err := getStructFields(t) + if err != nil { + return fmt.Errorf("cannot generate decoder for %v: %v", t, err) + } + + for _, f := range fs { + g.genRequiredFieldSet(t, f) + } + + fmt.Fprintln(g.out, " in.Delim('{')") + fmt.Fprintln(g.out, " for !in.IsDelim('}') {") + fmt.Fprintln(g.out, " key := in.UnsafeString()") + fmt.Fprintln(g.out, " in.WantColon()") + fmt.Fprintln(g.out, " if in.IsNull() {") + fmt.Fprintln(g.out, " in.Skip()") + fmt.Fprintln(g.out, " in.WantComma()") + fmt.Fprintln(g.out, " continue") + fmt.Fprintln(g.out, " }") + + fmt.Fprintln(g.out, " switch key {") + for _, f := range fs { + if err := g.genStructFieldDecoder(t, f); err != nil { + return err + } + } + + fmt.Fprintln(g.out, " default:") + fmt.Fprintln(g.out, " in.SkipRecursive()") + fmt.Fprintln(g.out, " }") + fmt.Fprintln(g.out, " in.WantComma()") + fmt.Fprintln(g.out, " }") + fmt.Fprintln(g.out, " in.Delim('}')") + fmt.Fprintln(g.out, " if isTopLevel {") + fmt.Fprintln(g.out, " in.Consumed()") + fmt.Fprintln(g.out, " }") + + for _, f := range fs { + g.genRequiredFieldCheck(t, f) + } + + fmt.Fprintln(g.out, "}") + + return nil +} + +func (g *Generator) genStructUnmarshaler(t reflect.Type) error { + switch t.Kind() { + case reflect.Slice, reflect.Array, reflect.Map, reflect.Struct: + default: + return fmt.Errorf("cannot generate encoder/decoder for %v, not a struct/slice/array/map type", t) + } + + fname := g.getDecoderName(t) + typ := g.getType(t) + + if !g.noStdMarshalers { + fmt.Fprintln(g.out, "// UnmarshalJSON supports json.Unmarshaler interface") + fmt.Fprintln(g.out, "func (v *"+typ+") UnmarshalJSON(data []byte) error {") + fmt.Fprintln(g.out, " r := jlexer.Lexer{Data: data}") + fmt.Fprintln(g.out, " "+fname+"(&r, v)") + fmt.Fprintln(g.out, " return r.Error()") + fmt.Fprintln(g.out, "}") + } + + fmt.Fprintln(g.out, "// UnmarshalEasyJSON supports easyjson.Unmarshaler interface") + fmt.Fprintln(g.out, "func (v *"+typ+") UnmarshalEasyJSON(l *jlexer.Lexer) {") + fmt.Fprintln(g.out, " "+fname+"(l, v)") + fmt.Fprintln(g.out, "}") + + return nil +} diff --git a/vendor/github.com/mailru/easyjson/gen/encoder.go b/vendor/github.com/mailru/easyjson/gen/encoder.go new file mode 100644 index 000000000..48cba15d4 --- /dev/null +++ b/vendor/github.com/mailru/easyjson/gen/encoder.go @@ -0,0 +1,382 @@ +package gen + +import ( + "encoding" + "encoding/json" + "fmt" + "reflect" + "strconv" + "strings" + + "github.com/mailru/easyjson" +) + +func (g *Generator) getEncoderName(t reflect.Type) string { + return g.functionName("encode", t) +} + +var primitiveEncoders = map[reflect.Kind]string{ + reflect.String: "out.String(string(%v))", + reflect.Bool: "out.Bool(bool(%v))", + reflect.Int: "out.Int(int(%v))", + reflect.Int8: "out.Int8(int8(%v))", + reflect.Int16: "out.Int16(int16(%v))", + reflect.Int32: "out.Int32(int32(%v))", + reflect.Int64: "out.Int64(int64(%v))", + reflect.Uint: "out.Uint(uint(%v))", + reflect.Uint8: "out.Uint8(uint8(%v))", + reflect.Uint16: "out.Uint16(uint16(%v))", + reflect.Uint32: "out.Uint32(uint32(%v))", + reflect.Uint64: "out.Uint64(uint64(%v))", + reflect.Float32: "out.Float32(float32(%v))", + reflect.Float64: "out.Float64(float64(%v))", +} + +var primitiveStringEncoders = map[reflect.Kind]string{ + reflect.String: "out.String(string(%v))", + reflect.Int: "out.IntStr(int(%v))", + reflect.Int8: "out.Int8Str(int8(%v))", + reflect.Int16: "out.Int16Str(int16(%v))", + reflect.Int32: "out.Int32Str(int32(%v))", + reflect.Int64: "out.Int64Str(int64(%v))", + reflect.Uint: "out.UintStr(uint(%v))", + reflect.Uint8: "out.Uint8Str(uint8(%v))", + reflect.Uint16: "out.Uint16Str(uint16(%v))", + reflect.Uint32: "out.Uint32Str(uint32(%v))", + reflect.Uint64: "out.Uint64Str(uint64(%v))", + reflect.Uintptr: "out.UintptrStr(uintptr(%v))", +} + +// fieldTags contains parsed version of json struct field tags. +type fieldTags struct { + name string + + omit bool + omitEmpty bool + noOmitEmpty bool + asString bool + required bool +} + +// parseFieldTags parses the json field tag into a structure. +func parseFieldTags(f reflect.StructField) fieldTags { + var ret fieldTags + + for i, s := range strings.Split(f.Tag.Get("json"), ",") { + switch { + case i == 0 && s == "-": + ret.omit = true + case i == 0: + ret.name = s + case s == "omitempty": + ret.omitEmpty = true + case s == "!omitempty": + ret.noOmitEmpty = true + case s == "string": + ret.asString = true + case s == "required": + ret.required = true + } + } + + return ret +} + +// genTypeEncoder generates code that encodes in of type t into the writer, but uses marshaler interface if implemented by t. +func (g *Generator) genTypeEncoder(t reflect.Type, in string, tags fieldTags, indent int, assumeNonEmpty bool) error { + ws := strings.Repeat(" ", indent) + + marshalerIface := reflect.TypeOf((*easyjson.Marshaler)(nil)).Elem() + if reflect.PtrTo(t).Implements(marshalerIface) { + fmt.Fprintln(g.out, ws+"("+in+").MarshalEasyJSON(out)") + return nil + } + + marshalerIface = reflect.TypeOf((*json.Marshaler)(nil)).Elem() + if reflect.PtrTo(t).Implements(marshalerIface) { + fmt.Fprintln(g.out, ws+"out.Raw( ("+in+").MarshalJSON() )") + return nil + } + + marshalerIface = reflect.TypeOf((*encoding.TextMarshaler)(nil)).Elem() + if reflect.PtrTo(t).Implements(marshalerIface) { + fmt.Fprintln(g.out, ws+"out.RawText( ("+in+").MarshalText() )") + return nil + } + + err := g.genTypeEncoderNoCheck(t, in, tags, indent, assumeNonEmpty) + return err +} + +// genTypeEncoderNoCheck generates code that encodes in of type t into the writer. +func (g *Generator) genTypeEncoderNoCheck(t reflect.Type, in string, tags fieldTags, indent int, assumeNonEmpty bool) error { + ws := strings.Repeat(" ", indent) + + // Check whether type is primitive, needs to be done after interface check. + if enc := primitiveStringEncoders[t.Kind()]; enc != "" && tags.asString { + fmt.Fprintf(g.out, ws+enc+"\n", in) + return nil + } else if enc := primitiveEncoders[t.Kind()]; enc != "" { + fmt.Fprintf(g.out, ws+enc+"\n", in) + return nil + } + + switch t.Kind() { + case reflect.Slice: + elem := t.Elem() + iVar := g.uniqueVarName() + vVar := g.uniqueVarName() + + if t.Elem().Kind() == reflect.Uint8 { + fmt.Fprintln(g.out, ws+"out.Base64Bytes("+in+")") + } else { + if !assumeNonEmpty { + fmt.Fprintln(g.out, ws+"if "+in+" == nil && (out.Flags & jwriter.NilSliceAsEmpty) == 0 {") + fmt.Fprintln(g.out, ws+` out.RawString("null")`) + fmt.Fprintln(g.out, ws+"} else {") + } else { + fmt.Fprintln(g.out, ws+"{") + } + fmt.Fprintln(g.out, ws+" out.RawByte('[')") + fmt.Fprintln(g.out, ws+" for "+iVar+", "+vVar+" := range "+in+" {") + fmt.Fprintln(g.out, ws+" if "+iVar+" > 0 {") + fmt.Fprintln(g.out, ws+" out.RawByte(',')") + fmt.Fprintln(g.out, ws+" }") + + if err := g.genTypeEncoder(elem, vVar, tags, indent+2, false); err != nil { + return err + } + + fmt.Fprintln(g.out, ws+" }") + fmt.Fprintln(g.out, ws+" out.RawByte(']')") + fmt.Fprintln(g.out, ws+"}") + } + + case reflect.Array: + elem := t.Elem() + iVar := g.uniqueVarName() + + if t.Elem().Kind() == reflect.Uint8 { + fmt.Fprintln(g.out, ws+"out.Base64Bytes("+in+"[:])") + } else { + fmt.Fprintln(g.out, ws+"out.RawByte('[')") + fmt.Fprintln(g.out, ws+"for "+iVar+" := range "+in+" {") + fmt.Fprintln(g.out, ws+" if "+iVar+" > 0 {") + fmt.Fprintln(g.out, ws+" out.RawByte(',')") + fmt.Fprintln(g.out, ws+" }") + + if err := g.genTypeEncoder(elem, in+"["+iVar+"]", tags, indent+1, false); err != nil { + return err + } + + fmt.Fprintln(g.out, ws+"}") + fmt.Fprintln(g.out, ws+"out.RawByte(']')") + } + + case reflect.Struct: + enc := g.getEncoderName(t) + g.addType(t) + + fmt.Fprintln(g.out, ws+enc+"(out, "+in+")") + + case reflect.Ptr: + if !assumeNonEmpty { + fmt.Fprintln(g.out, ws+"if "+in+" == nil {") + fmt.Fprintln(g.out, ws+` out.RawString("null")`) + fmt.Fprintln(g.out, ws+"} else {") + } + + if err := g.genTypeEncoder(t.Elem(), "*"+in, tags, indent+1, false); err != nil { + return err + } + + if !assumeNonEmpty { + fmt.Fprintln(g.out, ws+"}") + } + + case reflect.Map: + key := t.Key() + keyEnc, ok := primitiveStringEncoders[key.Kind()] + if !ok { + return fmt.Errorf("map key type %v not supported: only string and integer keys are allowed", key) + } + tmpVar := g.uniqueVarName() + + if !assumeNonEmpty { + fmt.Fprintln(g.out, ws+"if "+in+" == nil && (out.Flags & jwriter.NilMapAsEmpty) == 0 {") + fmt.Fprintln(g.out, ws+" out.RawString(`null`)") + fmt.Fprintln(g.out, ws+"} else {") + } else { + fmt.Fprintln(g.out, ws+"{") + } + fmt.Fprintln(g.out, ws+" out.RawByte('{')") + fmt.Fprintln(g.out, ws+" "+tmpVar+"First := true") + fmt.Fprintln(g.out, ws+" for "+tmpVar+"Name, "+tmpVar+"Value := range "+in+" {") + fmt.Fprintln(g.out, ws+" if "+tmpVar+"First { "+tmpVar+"First = false } else { out.RawByte(',') }") + fmt.Fprintln(g.out, ws+" "+fmt.Sprintf(keyEnc, tmpVar+"Name")) + fmt.Fprintln(g.out, ws+" out.RawByte(':')") + + if err := g.genTypeEncoder(t.Elem(), tmpVar+"Value", tags, indent+2, false); err != nil { + return err + } + + fmt.Fprintln(g.out, ws+" }") + fmt.Fprintln(g.out, ws+" out.RawByte('}')") + fmt.Fprintln(g.out, ws+"}") + + case reflect.Interface: + if t.NumMethod() != 0 { + return fmt.Errorf("interface type %v not supported: only interface{} is allowed", t) + } + fmt.Fprintln(g.out, ws+"if m, ok := "+in+".(easyjson.Marshaler); ok {") + fmt.Fprintln(g.out, ws+" m.MarshalEasyJSON(out)") + fmt.Fprintln(g.out, ws+"} else if m, ok := "+in+".(json.Marshaler); ok {") + fmt.Fprintln(g.out, ws+" out.Raw(m.MarshalJSON())") + fmt.Fprintln(g.out, ws+"} else {") + fmt.Fprintln(g.out, ws+" out.Raw(json.Marshal("+in+"))") + fmt.Fprintln(g.out, ws+"}") + + default: + return fmt.Errorf("don't know how to encode %v", t) + } + return nil +} + +func (g *Generator) notEmptyCheck(t reflect.Type, v string) string { + optionalIface := reflect.TypeOf((*easyjson.Optional)(nil)).Elem() + if reflect.PtrTo(t).Implements(optionalIface) { + return "(" + v + ").IsDefined()" + } + + switch t.Kind() { + case reflect.Slice, reflect.Map: + return "len(" + v + ") != 0" + case reflect.Interface, reflect.Ptr: + return v + " != nil" + case reflect.Bool: + return v + case reflect.String: + return v + ` != ""` + case reflect.Float32, reflect.Float64, + reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, + reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64: + + return v + " != 0" + + default: + // note: Array types don't have a useful empty value + return "true" + } +} + +func (g *Generator) genStructFieldEncoder(t reflect.Type, f reflect.StructField) error { + jsonName := g.fieldNamer.GetJSONFieldName(t, f) + tags := parseFieldTags(f) + + if tags.omit { + return nil + } + noOmitEmpty := (!tags.omitEmpty && !g.omitEmpty) || tags.noOmitEmpty + if noOmitEmpty { + fmt.Fprintln(g.out, " {") + } else { + fmt.Fprintln(g.out, " if", g.notEmptyCheck(f.Type, "in."+f.Name), "{") + } + fmt.Fprintf(g.out, " const prefix string = %q\n", ","+strconv.Quote(jsonName)+":") + fmt.Fprintln(g.out, " if first {") + fmt.Fprintln(g.out, " first = false") + fmt.Fprintln(g.out, " out.RawString(prefix[1:])") + fmt.Fprintln(g.out, " } else {") + fmt.Fprintln(g.out, " out.RawString(prefix)") + fmt.Fprintln(g.out, " }") + + if err := g.genTypeEncoder(f.Type, "in."+f.Name, tags, 2, !noOmitEmpty); err != nil { + return err + } + fmt.Fprintln(g.out, " }") + return nil +} + +func (g *Generator) genEncoder(t reflect.Type) error { + switch t.Kind() { + case reflect.Slice, reflect.Array, reflect.Map: + return g.genSliceArrayMapEncoder(t) + default: + return g.genStructEncoder(t) + } +} + +func (g *Generator) genSliceArrayMapEncoder(t reflect.Type) error { + switch t.Kind() { + case reflect.Slice, reflect.Array, reflect.Map: + default: + return fmt.Errorf("cannot generate encoder/decoder for %v, not a slice/array/map type", t) + } + + fname := g.getEncoderName(t) + typ := g.getType(t) + + fmt.Fprintln(g.out, "func "+fname+"(out *jwriter.Writer, in "+typ+") {") + err := g.genTypeEncoderNoCheck(t, "in", fieldTags{}, 1, false) + if err != nil { + return err + } + fmt.Fprintln(g.out, "}") + return nil +} + +func (g *Generator) genStructEncoder(t reflect.Type) error { + if t.Kind() != reflect.Struct { + return fmt.Errorf("cannot generate encoder/decoder for %v, not a struct type", t) + } + + fname := g.getEncoderName(t) + typ := g.getType(t) + + fmt.Fprintln(g.out, "func "+fname+"(out *jwriter.Writer, in "+typ+") {") + fmt.Fprintln(g.out, " out.RawByte('{')") + fmt.Fprintln(g.out, " first := true") + fmt.Fprintln(g.out, " _ = first") + + fs, err := getStructFields(t) + if err != nil { + return fmt.Errorf("cannot generate encoder for %v: %v", t, err) + } + for _, f := range fs { + if err := g.genStructFieldEncoder(t, f); err != nil { + return err + } + } + + fmt.Fprintln(g.out, " out.RawByte('}')") + fmt.Fprintln(g.out, "}") + + return nil +} + +func (g *Generator) genStructMarshaler(t reflect.Type) error { + switch t.Kind() { + case reflect.Slice, reflect.Array, reflect.Map, reflect.Struct: + default: + return fmt.Errorf("cannot generate encoder/decoder for %v, not a struct/slice/array/map type", t) + } + + fname := g.getEncoderName(t) + typ := g.getType(t) + + if !g.noStdMarshalers { + fmt.Fprintln(g.out, "// MarshalJSON supports json.Marshaler interface") + fmt.Fprintln(g.out, "func (v "+typ+") MarshalJSON() ([]byte, error) {") + fmt.Fprintln(g.out, " w := jwriter.Writer{}") + fmt.Fprintln(g.out, " "+fname+"(&w, v)") + fmt.Fprintln(g.out, " return w.Buffer.BuildBytes(), w.Error") + fmt.Fprintln(g.out, "}") + } + + fmt.Fprintln(g.out, "// MarshalEasyJSON supports easyjson.Marshaler interface") + fmt.Fprintln(g.out, "func (v "+typ+") MarshalEasyJSON(w *jwriter.Writer) {") + fmt.Fprintln(g.out, " "+fname+"(w, v)") + fmt.Fprintln(g.out, "}") + + return nil +} diff --git a/vendor/github.com/mailru/easyjson/gen/generator.go b/vendor/github.com/mailru/easyjson/gen/generator.go new file mode 100644 index 000000000..eb0d70ba2 --- /dev/null +++ b/vendor/github.com/mailru/easyjson/gen/generator.go @@ -0,0 +1,523 @@ +package gen + +import ( + "bytes" + "fmt" + "hash/fnv" + "io" + "path" + "reflect" + "sort" + "strconv" + "strings" + "unicode" +) + +const pkgWriter = "github.com/mailru/easyjson/jwriter" +const pkgLexer = "github.com/mailru/easyjson/jlexer" +const pkgEasyJSON = "github.com/mailru/easyjson" + +// FieldNamer defines a policy for generating names for struct fields. +type FieldNamer interface { + GetJSONFieldName(t reflect.Type, f reflect.StructField) string +} + +// Generator generates the requested marshaler/unmarshalers. +type Generator struct { + out *bytes.Buffer + + pkgName string + pkgPath string + buildTags string + hashString string + + varCounter int + + noStdMarshalers bool + omitEmpty bool + fieldNamer FieldNamer + + // package path to local alias map for tracking imports + imports map[string]string + + // types that marshalers were requested for by user + marshalers map[reflect.Type]bool + + // types that encoders were already generated for + typesSeen map[reflect.Type]bool + + // types that encoders were requested for (e.g. by encoders of other types) + typesUnseen []reflect.Type + + // function name to relevant type maps to track names of de-/encoders in + // case of a name clash or unnamed structs + functionNames map[string]reflect.Type +} + +// NewGenerator initializes and returns a Generator. +func NewGenerator(filename string) *Generator { + ret := &Generator{ + imports: map[string]string{ + pkgWriter: "jwriter", + pkgLexer: "jlexer", + pkgEasyJSON: "easyjson", + "encoding/json": "json", + }, + fieldNamer: DefaultFieldNamer{}, + marshalers: make(map[reflect.Type]bool), + typesSeen: make(map[reflect.Type]bool), + functionNames: make(map[string]reflect.Type), + } + + // Use a file-unique prefix on all auxiliary funcs to avoid + // name clashes. + hash := fnv.New32() + hash.Write([]byte(filename)) + ret.hashString = fmt.Sprintf("%x", hash.Sum32()) + + return ret +} + +// SetPkg sets the name and path of output package. +func (g *Generator) SetPkg(name, path string) { + g.pkgName = name + g.pkgPath = path +} + +// SetBuildTags sets build tags for the output file. +func (g *Generator) SetBuildTags(tags string) { + g.buildTags = tags +} + +// SetFieldNamer sets field naming strategy. +func (g *Generator) SetFieldNamer(n FieldNamer) { + g.fieldNamer = n +} + +// UseSnakeCase sets snake_case field naming strategy. +func (g *Generator) UseSnakeCase() { + g.fieldNamer = SnakeCaseFieldNamer{} +} + +// UseLowerCamelCase sets lowerCamelCase field naming strategy. +func (g *Generator) UseLowerCamelCase() { + g.fieldNamer = LowerCamelCaseFieldNamer{} +} + +// NoStdMarshalers instructs not to generate standard MarshalJSON/UnmarshalJSON +// methods (only the custom interface). +func (g *Generator) NoStdMarshalers() { + g.noStdMarshalers = true +} + +// OmitEmpty triggers `json=",omitempty"` behaviour by default. +func (g *Generator) OmitEmpty() { + g.omitEmpty = true +} + +// addTypes requests to generate encoding/decoding funcs for the given type. +func (g *Generator) addType(t reflect.Type) { + if g.typesSeen[t] { + return + } + for _, t1 := range g.typesUnseen { + if t1 == t { + return + } + } + g.typesUnseen = append(g.typesUnseen, t) +} + +// Add requests to generate marshaler/unmarshalers and encoding/decoding +// funcs for the type of given object. +func (g *Generator) Add(obj interface{}) { + t := reflect.TypeOf(obj) + if t.Kind() == reflect.Ptr { + t = t.Elem() + } + g.addType(t) + g.marshalers[t] = true +} + +// printHeader prints package declaration and imports. +func (g *Generator) printHeader() { + if g.buildTags != "" { + fmt.Println("// +build ", g.buildTags) + fmt.Println() + } + fmt.Println("// Code generated by easyjson for marshaling/unmarshaling. DO NOT EDIT.") + fmt.Println() + fmt.Println("package ", g.pkgName) + fmt.Println() + + byAlias := map[string]string{} + var aliases []string + for path, alias := range g.imports { + aliases = append(aliases, alias) + byAlias[alias] = path + } + + sort.Strings(aliases) + fmt.Println("import (") + for _, alias := range aliases { + fmt.Printf(" %s %q\n", alias, byAlias[alias]) + } + + fmt.Println(")") + fmt.Println("") + fmt.Println("// suppress unused package warning") + fmt.Println("var (") + fmt.Println(" _ *json.RawMessage") + fmt.Println(" _ *jlexer.Lexer") + fmt.Println(" _ *jwriter.Writer") + fmt.Println(" _ easyjson.Marshaler") + fmt.Println(")") + + fmt.Println() +} + +// Run runs the generator and outputs generated code to out. +func (g *Generator) Run(out io.Writer) error { + g.out = &bytes.Buffer{} + + for len(g.typesUnseen) > 0 { + t := g.typesUnseen[len(g.typesUnseen)-1] + g.typesUnseen = g.typesUnseen[:len(g.typesUnseen)-1] + g.typesSeen[t] = true + + if err := g.genDecoder(t); err != nil { + return err + } + if err := g.genEncoder(t); err != nil { + return err + } + + if !g.marshalers[t] { + continue + } + + if err := g.genStructMarshaler(t); err != nil { + return err + } + if err := g.genStructUnmarshaler(t); err != nil { + return err + } + } + g.printHeader() + _, err := out.Write(g.out.Bytes()) + return err +} + +// fixes vendored paths +func fixPkgPathVendoring(pkgPath string) string { + const vendor = "/vendor/" + if i := strings.LastIndex(pkgPath, vendor); i != -1 { + return pkgPath[i+len(vendor):] + } + return pkgPath +} + +func fixAliasName(alias string) string { + alias = strings.Replace( + strings.Replace(alias, ".", "_", -1), + "-", + "_", + -1, + ) + + if alias[0] == 'v' { // to void conflicting with var names, say v1 + alias = "_" + alias + } + return alias +} + +// pkgAlias creates and returns and import alias for a given package. +func (g *Generator) pkgAlias(pkgPath string) string { + pkgPath = fixPkgPathVendoring(pkgPath) + if alias := g.imports[pkgPath]; alias != "" { + return alias + } + + for i := 0; ; i++ { + alias := fixAliasName(path.Base(pkgPath)) + if i > 0 { + alias += fmt.Sprint(i) + } + + exists := false + for _, v := range g.imports { + if v == alias { + exists = true + break + } + } + + if !exists { + g.imports[pkgPath] = alias + return alias + } + } +} + +// getType return the textual type name of given type that can be used in generated code. +func (g *Generator) getType(t reflect.Type) string { + if t.Name() == "" { + switch t.Kind() { + case reflect.Ptr: + return "*" + g.getType(t.Elem()) + case reflect.Slice: + return "[]" + g.getType(t.Elem()) + case reflect.Array: + return "[" + strconv.Itoa(t.Len()) + "]" + g.getType(t.Elem()) + case reflect.Map: + return "map[" + g.getType(t.Key()) + "]" + g.getType(t.Elem()) + } + } + + if t.Name() == "" || t.PkgPath() == "" { + if t.Kind() == reflect.Struct { + // the fields of an anonymous struct can have named types, + // and t.String() will not be sufficient because it does not + // remove the package name when it matches g.pkgPath. + // so we convert by hand + nf := t.NumField() + lines := make([]string, 0, nf) + for i := 0; i < nf; i++ { + f := t.Field(i) + line := f.Name + " " + g.getType(f.Type) + t := f.Tag + if t != "" { + line += " " + escapeTag(t) + } + lines = append(lines, line) + } + return strings.Join([]string{"struct { ", strings.Join(lines, "; "), " }"}, "") + } + return t.String() + } else if t.PkgPath() == g.pkgPath { + return t.Name() + } + return g.pkgAlias(t.PkgPath()) + "." + t.Name() +} + +// escape a struct field tag string back to source code +func escapeTag(tag reflect.StructTag) string { + t := string(tag) + if strings.ContainsRune(t, '`') { + // there are ` in the string; we can't use ` to enclose the string + return strconv.Quote(t) + } + return "`" + t + "`" +} + +// uniqueVarName returns a file-unique name that can be used for generated variables. +func (g *Generator) uniqueVarName() string { + g.varCounter++ + return fmt.Sprint("v", g.varCounter) +} + +// safeName escapes unsafe characters in pkg/type name and returns a string that can be used +// in encoder/decoder names for the type. +func (g *Generator) safeName(t reflect.Type) string { + name := t.PkgPath() + if t.Name() == "" { + name += "anonymous" + } else { + name += "." + t.Name() + } + + parts := []string{} + part := []rune{} + for _, c := range name { + if unicode.IsLetter(c) || unicode.IsDigit(c) { + part = append(part, c) + } else if len(part) > 0 { + parts = append(parts, string(part)) + part = []rune{} + } + } + return joinFunctionNameParts(false, parts...) +} + +// functionName returns a function name for a given type with a given prefix. If a function +// with this prefix already exists for a type, it is returned. +// +// Method is used to track encoder/decoder names for the type. +func (g *Generator) functionName(prefix string, t reflect.Type) string { + prefix = joinFunctionNameParts(true, "easyjson", g.hashString, prefix) + name := joinFunctionNameParts(true, prefix, g.safeName(t)) + + // Most of the names will be unique, try a shortcut first. + if e, ok := g.functionNames[name]; !ok || e == t { + g.functionNames[name] = t + return name + } + + // Search if the function already exists. + for name1, t1 := range g.functionNames { + if t1 == t && strings.HasPrefix(name1, prefix) { + return name1 + } + } + + // Create a new name in the case of a clash. + for i := 1; ; i++ { + nm := fmt.Sprint(name, i) + if _, ok := g.functionNames[nm]; ok { + continue + } + g.functionNames[nm] = t + return nm + } +} + +// DefaultFieldsNamer implements trivial naming policy equivalent to encoding/json. +type DefaultFieldNamer struct{} + +func (DefaultFieldNamer) GetJSONFieldName(t reflect.Type, f reflect.StructField) string { + jsonName := strings.Split(f.Tag.Get("json"), ",")[0] + if jsonName != "" { + return jsonName + } else { + return f.Name + } +} + +// LowerCamelCaseFieldNamer +type LowerCamelCaseFieldNamer struct{} + +func isLower(b byte) bool { + return b <= 122 && b >= 97 +} + +func isUpper(b byte) bool { + return b >= 65 && b <= 90 +} + +// convert HTTPRestClient to httpRestClient +func lowerFirst(s string) string { + if s == "" { + return "" + } + + str := "" + strlen := len(s) + + /** + Loop each char + If is uppercase: + If is first char, LOWER it + If the following char is lower, LEAVE it + If the following char is upper OR numeric, LOWER it + If is the end of string, LEAVE it + Else lowercase + */ + + foundLower := false + for i := range s { + ch := s[i] + if isUpper(ch) { + if i == 0 { + str += string(ch + 32) + } else if !foundLower { // Currently just a stream of capitals, eg JSONRESTS[erver] + if strlen > (i+1) && isLower(s[i+1]) { + // Next char is lower, keep this a capital + str += string(ch) + } else { + // Either at end of string or next char is capital + str += string(ch + 32) + } + } else { + str += string(ch) + } + } else { + foundLower = true + str += string(ch) + } + } + + return str +} + +func (LowerCamelCaseFieldNamer) GetJSONFieldName(t reflect.Type, f reflect.StructField) string { + jsonName := strings.Split(f.Tag.Get("json"), ",")[0] + if jsonName != "" { + return jsonName + } else { + return lowerFirst(f.Name) + } +} + +// SnakeCaseFieldNamer implements CamelCase to snake_case conversion for fields names. +type SnakeCaseFieldNamer struct{} + +func camelToSnake(name string) string { + var ret bytes.Buffer + + multipleUpper := false + var lastUpper rune + var beforeUpper rune + + for _, c := range name { + // Non-lowercase character after uppercase is considered to be uppercase too. + isUpper := (unicode.IsUpper(c) || (lastUpper != 0 && !unicode.IsLower(c))) + + if lastUpper != 0 { + // Output a delimiter if last character was either the first uppercase character + // in a row, or the last one in a row (e.g. 'S' in "HTTPServer"). + // Do not output a delimiter at the beginning of the name. + + firstInRow := !multipleUpper + lastInRow := !isUpper + + if ret.Len() > 0 && (firstInRow || lastInRow) && beforeUpper != '_' { + ret.WriteByte('_') + } + ret.WriteRune(unicode.ToLower(lastUpper)) + } + + // Buffer uppercase char, do not output it yet as a delimiter may be required if the + // next character is lowercase. + if isUpper { + multipleUpper = (lastUpper != 0) + lastUpper = c + continue + } + + ret.WriteRune(c) + lastUpper = 0 + beforeUpper = c + multipleUpper = false + } + + if lastUpper != 0 { + ret.WriteRune(unicode.ToLower(lastUpper)) + } + return string(ret.Bytes()) +} + +func (SnakeCaseFieldNamer) GetJSONFieldName(t reflect.Type, f reflect.StructField) string { + jsonName := strings.Split(f.Tag.Get("json"), ",")[0] + if jsonName != "" { + return jsonName + } + + return camelToSnake(f.Name) +} + +func joinFunctionNameParts(keepFirst bool, parts ...string) string { + buf := bytes.NewBufferString("") + for i, part := range parts { + if i == 0 && keepFirst { + buf.WriteString(part) + } else { + if len(part) > 0 { + buf.WriteString(strings.ToUpper(string(part[0]))) + } + if len(part) > 1 { + buf.WriteString(part[1:]) + } + } + } + return buf.String() +} diff --git a/vendor/github.com/mailru/easyjson/gen/generator_test.go b/vendor/github.com/mailru/easyjson/gen/generator_test.go new file mode 100644 index 000000000..0c9d27845 --- /dev/null +++ b/vendor/github.com/mailru/easyjson/gen/generator_test.go @@ -0,0 +1,87 @@ +package gen + +import ( + "testing" +) + +func TestCamelToSnake(t *testing.T) { + for i, test := range []struct { + In, Out string + }{ + {"", ""}, + {"A", "a"}, + {"SimpleExample", "simple_example"}, + {"internalField", "internal_field"}, + + {"SomeHTTPStuff", "some_http_stuff"}, + {"WriteJSON", "write_json"}, + {"HTTP2Server", "http2_server"}, + {"Some_Mixed_Case", "some_mixed_case"}, + {"do_nothing", "do_nothing"}, + + {"JSONHTTPRPCServer", "jsonhttprpc_server"}, // nothing can be done here without a dictionary + } { + got := camelToSnake(test.In) + if got != test.Out { + t.Errorf("[%d] camelToSnake(%s) = %s; want %s", i, test.In, got, test.Out) + } + } +} + +func TestCamelToLowerCamel(t *testing.T) { + for i, test := range []struct { + In, Out string + }{ + {"", ""}, + {"A", "a"}, + {"SimpleExample", "simpleExample"}, + {"internalField", "internalField"}, + + {"SomeHTTPStuff", "someHTTPStuff"}, + {"WriteJSON", "writeJSON"}, + {"HTTP2Server", "http2Server"}, + + {"JSONHTTPRPCServer", "jsonhttprpcServer"}, // nothing can be done here without a dictionary + } { + got := lowerFirst(test.In) + if got != test.Out { + t.Errorf("[%d] lowerFirst(%s) = %s; want %s", i, test.In, got, test.Out) + } + } +} + +func TestJoinFunctionNameParts(t *testing.T) { + for i, test := range []struct { + keepFirst bool + parts []string + out string + }{ + {false, []string{}, ""}, + {false, []string{"a"}, "A"}, + {false, []string{"simple", "example"}, "SimpleExample"}, + {true, []string{"first", "example"}, "firstExample"}, + {false, []string{"some", "UPPER", "case"}, "SomeUPPERCase"}, + {false, []string{"number", "123"}, "Number123"}, + } { + got := joinFunctionNameParts(test.keepFirst, test.parts...) + if got != test.out { + t.Errorf("[%d] joinFunctionNameParts(%v) = %s; want %s", i, test.parts, got, test.out) + } + } +} + +func TestFixVendorPath(t *testing.T) { + for i, test := range []struct { + In, Out string + }{ + {"", ""}, + {"time", "time"}, + {"project/vendor/subpackage", "subpackage"}, + } { + got := fixPkgPathVendoring(test.In) + if got != test.Out { + t.Errorf("[%d] fixPkgPathVendoring(%s) = %s; want %s", i, test.In, got, test.Out) + } + } + +} |