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util.go
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util.go
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package javagen
import (
"bytes"
"errors"
"fmt"
"io"
"strings"
"text/template"
"github.com/tal-tech/go-zero/tools/goctl/api/spec"
apiutil "github.com/tal-tech/go-zero/tools/goctl/api/util"
"github.com/tal-tech/go-zero/tools/goctl/util"
)
const getSetTemplate = `
{{.indent}}{{.decorator}}
{{.indent}}public {{.returnType}} get{{.property}}() {
{{.indent}} return this.{{.propertyValue}};
{{.indent}}}
{{.indent}}public void set{{.property}}({{.type}} {{.propertyValue}}) {
{{.indent}} this.{{.propertyValue}} = {{.propertyValue}};
{{.indent}}}
`
func writeProperty(writer io.Writer, member spec.Member, indent int) error {
writeIndent(writer, indent)
ty, err := goTypeToJava(member.Type)
ty = strings.Replace(ty, "*", "", 1)
if err != nil {
return err
}
name, err := member.GetPropertyName()
if err != nil {
return err
}
_, err = fmt.Fprintf(writer, "private %s %s", ty, name)
if err != nil {
return err
}
writeDefaultValue(writer, member)
fmt.Fprint(writer, ";\n")
return err
}
func writeDefaultValue(writer io.Writer, member spec.Member) error {
switch member.Type {
case "string":
_, err := fmt.Fprintf(writer, " = \"\"")
return err
}
return nil
}
func writeIndent(writer io.Writer, indent int) {
for i := 0; i < indent; i++ {
fmt.Fprint(writer, "\t")
}
}
func indentString(indent int) string {
var result = ""
for i := 0; i < indent; i++ {
result += "\t"
}
return result
}
func writeBreakline(writer io.Writer) {
fmt.Fprint(writer, "\n")
}
func isPrimitiveType(tp string) bool {
switch tp {
case "int", "int32", "int64":
return true
case "float", "float32", "float64":
return true
case "bool":
return true
}
return false
}
func goTypeToJava(tp string) (string, error) {
if len(tp) == 0 {
return "", errors.New("property type empty")
}
if strings.HasPrefix(tp, "*") {
tp = tp[1:]
}
switch tp {
case "string":
return "String", nil
case "int64":
return "long", nil
case "int", "int8", "int32":
return "int", nil
case "float", "float32", "float64":
return "double", nil
case "bool":
return "boolean", nil
}
if strings.HasPrefix(tp, "[]") {
tys, err := apiutil.DecomposeType(tp)
if err != nil {
return "", err
}
if len(tys) == 0 {
return "", fmt.Errorf("%s tp parse error", tp)
}
return fmt.Sprintf("java.util.ArrayList<%s>", util.Title(tys[0])), nil
} else if strings.HasPrefix(tp, "map") {
tys, err := apiutil.DecomposeType(tp)
if err != nil {
return "", err
}
if len(tys) == 2 {
return "", fmt.Errorf("%s tp parse error", tp)
}
return fmt.Sprintf("java.util.HashMap<String, %s>", util.Title(tys[1])), nil
}
return util.Title(tp), nil
}
func genGetSet(writer io.Writer, tp spec.Type, indent int) error {
t := template.Must(template.New("getSetTemplate").Parse(getSetTemplate))
for _, member := range tp.Members {
var tmplBytes bytes.Buffer
oty, err := goTypeToJava(member.Type)
if err != nil {
return err
}
tyString := oty
decorator := ""
if !isPrimitiveType(member.Type) {
if member.IsOptional() {
decorator = "@org.jetbrains.annotations.Nullable "
} else {
decorator = "@org.jetbrains.annotations.NotNull "
}
tyString = decorator + tyString
}
err = t.Execute(&tmplBytes, map[string]string{
"property": util.Title(member.Name),
"propertyValue": util.Untitle(member.Name),
"type": tyString,
"decorator": decorator,
"returnType": oty,
"indent": indentString(indent),
})
if err != nil {
return err
}
r := tmplBytes.String()
r = strings.Replace(r, " boolean get", " boolean is", 1)
writer.Write([]byte(r))
}
return nil
}