/
type.go
272 lines (225 loc) · 4.04 KB
/
type.go
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package def
import (
"fmt"
"go/format"
"slices"
"strconv"
"strings"
gen "github.com/dave/jennifer/jen"
"github.com/fhluo/json2go/json2go/conv"
"github.com/samber/lo"
)
type Type interface {
fmt.Stringer
Code() gen.Code
Nullable() Type
}
type TypeDecl struct {
Name string
Type Type
}
func (t TypeDecl) String() string {
s := fmt.Sprintf("type %s %s", t.Name, t.Type)
r, err := format.Source([]byte(s))
if err != nil {
return s
} else {
return string(r)
}
}
type Int struct {
Pointer bool
}
func (i Int) String() string {
if i.Pointer {
return "*int"
} else {
return "int"
}
}
func (i Int) Nullable() Type {
i.Pointer = true
return i
}
func (i Int) Code() gen.Code {
if i.Pointer {
return gen.Op("*").Int()
}
return gen.Int()
}
type Float struct {
Pointer bool
}
func (f Float) String() string {
if f.Pointer {
return "*float64"
} else {
return "float64"
}
}
func (f Float) Nullable() Type {
f.Pointer = true
return f
}
func (f Float) Code() gen.Code {
if f.Pointer {
return gen.Op("*").Float64()
}
return gen.Float64()
}
type Bool struct {
Pointer bool
}
func (b Bool) String() string {
if b.Pointer {
return "*bool"
} else {
return "bool"
}
}
func (b Bool) Nullable() Type {
b.Pointer = true
return b
}
func (b Bool) Code() gen.Code {
if b.Pointer {
return gen.Op("*").Bool()
}
return gen.Bool()
}
type String struct {
Pointer bool
}
func (s String) String() string {
if s.Pointer {
return "*string"
} else {
return "string"
}
}
func (s String) Nullable() Type {
s.Pointer = true
return s
}
func (s String) Code() gen.Code {
if s.Pointer {
return gen.Op("*").String()
}
return gen.String()
}
type Array struct {
Element Type // element type
}
func (a Array) String() string {
return fmt.Sprintf("[]%s", a.Element)
}
func (a Array) Nullable() Type {
return a
}
func (a Array) Code() gen.Code {
return gen.Index().Add(a.Element.Code())
}
type Field struct {
Name string // field name
Key string // json key
Type Type
OmitEmpty bool
//String bool // string option: string, bool, int or float
}
func (f Field) String() string {
return fmt.Sprintf("%s %s `json:\"%s\"`", f.Name, f.Type, f.Options())
}
func (f Field) Options() string {
options := make([]string, 0, 3)
options = append(options, f.Key)
if f.OmitEmpty {
options = append(options, "omitempty")
}
//if f.String {
// options = append(options, "string")
//}
return strings.Join(options, ",")
}
func (f Field) Code() gen.Code {
return gen.Id(f.Name).Add(f.Type.Code(), gen.Tag(map[string]string{"json": f.Options()}))
}
type Struct struct {
Fields []*Field
Pointer bool
conv.CamelCaseConverter
}
func (s Struct) String() string {
s.Naming()
return fmt.Sprintf(
`struct{
%s
}`,
strings.Join(
lo.Map(s.Fields, func(field *Field, _ int) string {
return field.String()
}),
"\n\t",
),
)
}
func (s Struct) Nullable() Type {
s.Pointer = true
return s
}
func (s Struct) Naming() {
if len(s.Fields) == 0 {
return
}
named := !slices.Contains(
lo.Map(s.Fields, func(field *Field, _ int) string {
return field.Name
}),
"",
)
if named {
return
}
if s.Fields[0].Name != "" {
return
}
counter := make(map[string]int)
for _, field := range s.Fields {
field.Name = s.ToCamelCase(field.Key)
if counter[field.Name]++; counter[field.Name] != 1 {
field.Name += strconv.Itoa(counter[field.Name])
}
}
}
func (s Struct) Code() gen.Code {
s.Naming()
codes := lo.Map(s.Fields, func(field *Field, _ int) gen.Code {
return field.Code()
})
if s.Pointer {
gen.Op("*").Struct(codes...)
}
return gen.Struct(codes...)
}
type Map struct {
Key Type // key type: string or int
Value Type // value type
}
func (m Map) String() string {
return fmt.Sprintf("map[%s]%s", m.Key, m.Value)
}
func (m Map) Nullable() Type {
return m
}
func (m Map) Code() gen.Code {
return gen.Map(m.Key.Code()).Add(m.Value.Code())
}
type Any struct{}
func (a Any) String() string {
return "any"
}
func (a Any) Nullable() Type {
return a
}
func (a Any) Code() gen.Code {
return gen.Any()
}