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Support map type in go generate #1867

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merged 2 commits into from May 7, 2021
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42 changes: 37 additions & 5 deletions github/gen-accessors.go
Expand Up @@ -115,8 +115,7 @@ func (t *templateData) processAST(f *ast.File) error {
continue
}
for _, field := range st.Fields.List {
se, ok := field.Type.(*ast.StarExpr)
if len(field.Names) == 0 || !ok {
if len(field.Names) == 0 {
continue
}

Expand All @@ -132,13 +131,25 @@ func (t *templateData) processAST(f *ast.File) error {
continue
}

se, ok := field.Type.(*ast.StarExpr)
if !ok {
switch x := field.Type.(type) {
case *ast.MapType:
t.addMapType(x, ts.Name.String(), fieldName.String(), false)
continue
}

logf("Skipping field type %T, fieldName=%v", field.Type, fieldName)
continue
}

switch x := se.X.(type) {
case *ast.ArrayType:
t.addArrayType(x, ts.Name.String(), fieldName.String())
case *ast.Ident:
t.addIdent(x, ts.Name.String(), fieldName.String())
case *ast.MapType:
t.addMapType(x, ts.Name.String(), fieldName.String())
t.addMapType(x, ts.Name.String(), fieldName.String(), true)
case *ast.SelectorExpr:
t.addSelectorExpr(x, ts.Name.String(), fieldName.String())
default:
Expand Down Expand Up @@ -232,7 +243,7 @@ func (t *templateData) addIdent(x *ast.Ident, receiverType, fieldName string) {
t.Getters = append(t.Getters, newGetter(receiverType, fieldName, x.String(), zeroValue, namedStruct))
}

func (t *templateData) addMapType(x *ast.MapType, receiverType, fieldName string) {
func (t *templateData) addMapType(x *ast.MapType, receiverType, fieldName string, isAPointer bool) {
var keyType string
switch key := x.Key.(type) {
case *ast.Ident:
Expand All @@ -253,7 +264,9 @@ func (t *templateData) addMapType(x *ast.MapType, receiverType, fieldName string

fieldType := fmt.Sprintf("map[%v]%v", keyType, valueType)
zeroValue := fmt.Sprintf("map[%v]%v{}", keyType, valueType)
t.Getters = append(t.Getters, newGetter(receiverType, fieldName, fieldType, zeroValue, false))
ng := newGetter(receiverType, fieldName, fieldType, zeroValue, false)
ng.MapType = !isAPointer
t.Getters = append(t.Getters, ng)
}

func (t *templateData) addSelectorExpr(x *ast.SelectorExpr, receiverType, fieldName string) {
Expand Down Expand Up @@ -300,6 +313,7 @@ type getter struct {
FieldType string
ZeroValue string
NamedStruct bool // Getter for named struct.
MapType bool
}

type byName []*getter
Expand Down Expand Up @@ -332,6 +346,14 @@ func ({{.ReceiverVar}} *{{.ReceiverType}}) Get{{.FieldName}}() *{{.FieldType}} {
}
return {{.ReceiverVar}}.{{.FieldName}}
}
{{else if .MapType}}
// Get{{.FieldName}} returns the {{.FieldName}} map if it's non-nil, an empty map otherwise.
func ({{.ReceiverVar}} *{{.ReceiverType}}) Get{{.FieldName}}() {{.FieldType}} {
if {{.ReceiverVar}} == nil || {{.ReceiverVar}}.{{.FieldName}} == nil {
return {{.ZeroValue}}
}
return {{.ReceiverVar}}.{{.FieldName}}
}
{{else}}
// Get{{.FieldName}} returns the {{.FieldName}} field if it's non-nil, zero value otherwise.
func ({{.ReceiverVar}} *{{.ReceiverType}}) Get{{.FieldName}}() {{.FieldType}} {
Expand Down Expand Up @@ -368,6 +390,16 @@ func Test{{.ReceiverType}}_Get{{.FieldName}}(tt *testing.T) {
{{.ReceiverVar}} = nil
{{.ReceiverVar}}.Get{{.FieldName}}()
}
{{else if .MapType}}
func Test{{.ReceiverType}}_Get{{.FieldName}}(tt *testing.T) {
zeroValue := {{.FieldType}}{}
{{.ReceiverVar}} := &{{.ReceiverType}}{ {{.FieldName}}: zeroValue }
{{.ReceiverVar}}.Get{{.FieldName}}()
{{.ReceiverVar}} = &{{.ReceiverType}}{}
{{.ReceiverVar}}.Get{{.FieldName}}()
{{.ReceiverVar}} = nil
{{.ReceiverVar}}.Get{{.FieldName}}()
}
{{else}}
func Test{{.ReceiverType}}_Get{{.FieldName}}(tt *testing.T) {
var zeroValue {{.FieldType}}
Expand Down
5 changes: 0 additions & 5 deletions github/gen-stringify-test.go
Expand Up @@ -187,11 +187,6 @@ func (t *templateData) processAST(f *ast.File) error {
continue
}

if _, ok := field.Type.(*ast.MapType); ok {
t.addMapType(ts.Name.String(), fieldName.String())
continue
}

se, ok := field.Type.(*ast.StarExpr)
if !ok {
logf("Ignoring type %T for Name=%q, FieldName=%q", field.Type, ts.Name.String(), fieldName.String())
Expand Down
8 changes: 8 additions & 0 deletions github/github-accessors.go

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10 changes: 10 additions & 0 deletions github/github-accessors_test.go

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.

23 changes: 10 additions & 13 deletions github/github-stringify_test.go

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.

3 changes: 3 additions & 0 deletions github/strings.go
Expand Up @@ -72,6 +72,9 @@ func stringifyValue(w io.Writer, val reflect.Value) {
if fv.Kind() == reflect.Slice && fv.IsNil() {
continue
}
if fv.Kind() == reflect.Map && fv.IsNil() {
continue
}

if sep {
w.Write([]byte(", "))
Expand Down
4 changes: 2 additions & 2 deletions github/strings_test.go
Expand Up @@ -98,10 +98,10 @@ func TestString(t *testing.T) {
{Event{ID: String("1")}, `github.Event{ID:"1"}`},
{GistComment{ID: Int64(1)}, `github.GistComment{ID:1}`},
{GistFile{Size: Int(1)}, `github.GistFile{Size:1}`},
{Gist{ID: String("1")}, `github.Gist{ID:"1", Files:map[]}`},
{Gist{ID: String("1")}, `github.Gist{ID:"1"}`},
{GitObject{SHA: String("s")}, `github.GitObject{SHA:"s"}`},
{Gitignore{Name: String("n")}, `github.Gitignore{Name:"n"}`},
{Hook{ID: Int64(1)}, `github.Hook{ID:1, LastResponse:map[], Config:map[]}`},
{Hook{ID: Int64(1)}, `github.Hook{ID:1}`},
{IssueComment{ID: Int64(1)}, `github.IssueComment{ID:1}`},
{Issue{Number: Int(1)}, `github.Issue{Number:1}`},
{Key{ID: Int64(1)}, `github.Key{ID:1}`},
Expand Down