/
file_pb_type_conversion.go
128 lines (110 loc) · 2.3 KB
/
file_pb_type_conversion.go
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package internal
import (
"github.com/iancoleman/strcase"
"github.com/thecodedproject/gopkg"
"github.com/thecodedproject/gopkg/tmpl"
)
func filePbTypeConversion(
s serviceDefinition,
) func() ([]gopkg.FileContents, error) {
return func() ([]gopkg.FileContents, error) {
serviceImportAlias := s.Name
funcs, err := makeTypeConversionFuncs(s, serviceImportAlias)
if err != nil {
return nil, err
}
if len(funcs) == 0 {
return nil, nil
}
return []gopkg.FileContents{
{
Filepath: "pb/type_conversion.go",
PackageName: s.PbImport.Alias,
PackageImportPath: s.PbImport.Import,
Imports: []gopkg.ImportAndAlias{
{
Import: s.ImportPath,
Alias: serviceImportAlias,
},
},
Functions: funcs,
},
}, nil
}
}
func makeTypeConversionFuncs(
s serviceDefinition,
serviceImportAlias string,
) ([]gopkg.DeclFunc, error) {
nestedMsgs := s.ApiProto.NestedMessages()
funcs := make([]gopkg.DeclFunc, 0, len(nestedMsgs)*2)
for _, m := range nestedMsgs {
mName := strcase.ToCamel(m.Name)
apiType := gopkg.TypeNamed{
Name: mName,
Import: s.ImportPath,
ValueType: gopkg.TypeStruct{},
}
protoType := gopkg.TypePointer{
ValueType: gopkg.TypeNamed{
Name: mName,
Import: s.PbImport.Import,
},
}
funcs = append(
funcs,
gopkg.DeclFunc{
Name: mName + "FromProto",
Args: []gopkg.DeclVar{
{
Name: "v",
Type: protoType,
},
},
ReturnArgs: tmpl.UnnamedReturnArgs(
apiType,
),
BodyData: m,
BodyTmpl: `
if v == nil {
{{FuncReturnDefaults}}
}
return ` + serviceImportAlias + `.` + mName + `{
{{- range .BodyData.Fields}}
{{- if .IsNestedMessage}}
{{ToCamel .Name}}: {{.Type}}FromProto(v.{{ToCamel .Name}}),
{{- else}}
{{ToCamel .Name}}: v.{{ToCamel .Name}},
{{- end}}
{{- end}}
}
`,
},
gopkg.DeclFunc{
Name: strcase.ToCamel(m.Name) + "ToProto",
Args: []gopkg.DeclVar{
{
Name: "v",
Type: apiType,
},
},
ReturnArgs: tmpl.UnnamedReturnArgs(
protoType,
),
BodyData: m,
BodyTmpl: `
return &` + mName + `{
{{- range .BodyData.Fields}}
{{- if .IsNestedMessage}}
{{ToCamel .Name}}: {{.Type}}ToProto(v.{{ToCamel .Name}}),
{{- else}}
{{ToCamel .Name}}: v.{{ToCamel .Name}},
{{- end}}
{{- end}}
}
`,
},
)
}
return funcs, nil
}