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field_type.go
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/
field_type.go
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package shared
import (
"fmt"
"strconv"
"strings"
pgs "github.com/lyft/protoc-gen-star"
)
func (fns Funcs) fieldElementType(el pgs.FieldTypeElem) string {
if el.IsEmbed() {
msg := el.Embed()
return fmt.Sprintf("[%s](#%s)", fns.Name(msg), fns.anchorName(msg))
} else if el.IsEnum() {
enum := el.Enum()
if enum.FullyQualifiedName() == ".google.protobuf.NullValue" {
return "null"
}
return fmt.Sprintf("[%s](#%s)", fns.Name(enum), fns.anchorName(enum))
}
switch el.ProtoType() {
case pgs.DoubleT, pgs.FloatT:
return "float"
case pgs.Int64T, pgs.UInt64T, pgs.SInt64, pgs.Fixed64T, pgs.SFixed64:
return "int64"
case pgs.Int32T, pgs.UInt32T, pgs.Fixed32T, pgs.SInt32, pgs.SFixed32:
return "int"
case pgs.BoolT:
return "bool"
case pgs.StringT:
return "string"
case pgs.BytesT:
return "bytes"
default:
return "UNKNOWN"
}
}
func (fns Funcs) embedJSONType(msg pgs.Message) string {
if msg.IsWellKnown() {
return "object"
}
switch msg.WellKnownType() {
case pgs.DurationWKT:
return `string ("1.000340012s")`
case pgs.EmptyWKT:
return `object "{}"`
case pgs.TimestampWKT:
return `string ("1972-01-01T10:00:20.021Z")`
case pgs.ListValueWKT:
return "array"
case pgs.DoubleValueWKT, pgs.FloatValueWKT:
return "number/string"
case pgs.Int64ValueWKT, pgs.UInt64ValueWKT:
return "string"
case pgs.Int32ValueWKT, pgs.UInt32ValueWKT:
return "number/string"
case pgs.BoolValueWKT:
return "true, false"
case pgs.StringValueWKT:
return "string"
case pgs.BytesValueWKT:
return "base64 string"
//case pgs.ValueWKT: // TODO
//case pgs.AnyWKT, pgs.StructWKT:
default:
return "object"
}
}
func (fns Funcs) fieldType(field pgs.Field) (pbType, jsonType string) {
switch field.Type().ProtoType() {
case pgs.DoubleT, pgs.FloatT:
pbType = "float"
jsonType = "number/string"
case pgs.Int64T, pgs.UInt64T, pgs.SInt64, pgs.Fixed64T, pgs.SFixed64:
pbType = "int64"
jsonType = "string"
case pgs.Int32T, pgs.UInt32T, pgs.Fixed32T, pgs.SInt32, pgs.SFixed32:
pbType = "int"
jsonType = "number/string"
case pgs.BoolT:
pbType = "bool"
jsonType = "true, false"
case pgs.StringT:
pbType = "string"
jsonType = "string"
case pgs.BytesT:
pbType = "bytes"
jsonType = "base64 string"
case pgs.EnumT:
var enum pgs.Enum
if field.Type().IsRepeated() {
enum = field.Type().Element().Enum()
} else {
enum = field.Type().Enum()
}
pbType = fmt.Sprintf("enum [%s](#%s)", fns.Name(enum), fns.anchorName(enum))
jsonType = "string/integer"
if enum.FullyQualifiedName() == ".google.protobuf.NullValue" {
jsonType = "null"
}
case pgs.MessageT:
if field.Type().IsMap() {
key := fns.fieldElementType(field.Type().Key())
value := fns.fieldElementType(field.Type().Element())
pbType = fmt.Sprintf("map\\<%s, %s\\>", key, value)
jsonType = "object"
} else if field.Type().IsRepeated() {
el := fns.fieldElementType(field.Type().Element())
pbType = el
jsonType = "array"
} else {
msg := field.Type().Embed()
pbType = fmt.Sprintf("[%s](#%s)", fns.Name(msg), fns.anchorName(msg))
jsonType = fns.embedJSONType(msg)
}
// TODO: deprecated
case pgs.GroupT:
}
if field.InOneOf() {
pbType = fmt.Sprintf("%s (oneof %s)", pbType, field.OneOf().Name())
}
return
}
func (fns Funcs) fieldDoc(field pgs.Field) string {
columns := []string{
field.Name().String(),
}
// type
pbType, jsonType := fns.fieldType(field)
if field.Type().IsRepeated() {
pbType = fmt.Sprintf("array [%s]", pbType)
}
columns = append(columns, pbType, jsonType)
// validation
columns = append(columns, fns.fieldRules(field))
// comment
columns = append(columns, fns.trailingComment(field.SourceCodeInfo()))
if field.Syntax().SupportsRequiredPrefix() {
defaultValue := field.Descriptor().GetDefaultValue()
if defaultValue == "" {
defaultValue = "-"
}
columns = append(columns, defaultValue)
columns = append(columns, strconv.FormatBool(field.Required()))
}
return "|" + strings.Join(columns, "|") + "|"
}