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field.gotpl
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field.gotpl
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{{- range $object := .Objects }}{{- range $field := $object.Fields }}
func (ec *executionContext) _{{$object.Name}}_{{$field.Name}}(ctx context.Context, field graphql.CollectedField{{ if not $object.Root }}, obj {{$object.Reference | ref}}{{end}}) (ret {{ if $object.Stream }}func(ctx context.Context){{ end }}graphql.Marshaler) {
{{- $null := "graphql.Null" }}
{{- if $object.Stream }}
{{- $null = "nil" }}
{{- end }}
fc, err := ec.{{ $field.FieldContextFunc }}(ctx, field)
if err != nil {
return {{ $null }}
}
ctx = graphql.WithFieldContext(ctx, fc)
defer func () {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
ret = {{ $null }}
}
}()
{{- if $.AllDirectives.LocationDirectives "FIELD" }}
resTmp := ec._fieldMiddleware(ctx, {{if $object.Root}}nil{{else}}obj{{end}}, func(rctx context.Context) (interface{}, error) {
{{ template "field" $field }}
})
{{ else }}
resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
{{ template "field" $field }}
})
if err != nil {
ec.Error(ctx, err)
return {{ $null }}
}
{{- end }}
if resTmp == nil {
{{- if $field.TypeReference.GQL.NonNull }}
if !graphql.HasFieldError(ctx, fc) {
ec.Errorf(ctx, "must not be null")
}
{{- end }}
return {{ $null }}
}
{{- if $object.Stream }}
return func(ctx context.Context) graphql.Marshaler {
select {
case res, ok := <-resTmp.(<-chan {{$field.TypeReference.GO | ref}}):
if !ok {
return nil
}
return graphql.WriterFunc(func(w io.Writer) {
w.Write([]byte{'{'})
graphql.MarshalString(field.Alias).MarshalGQL(w)
w.Write([]byte{':'})
ec.{{ $field.TypeReference.MarshalFunc }}(ctx, field.Selections, res).MarshalGQL(w)
w.Write([]byte{'}'})
})
case <-ctx.Done():
return nil
}
}
{{- else }}
res := resTmp.({{$field.TypeReference.GO | ref}})
fc.Result = res
return ec.{{ $field.TypeReference.MarshalFunc }}(ctx, field.Selections, res)
{{- end }}
}
func (ec *executionContext) {{ $field.FieldContextFunc }}(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
fc = &graphql.FieldContext{
Object: {{quote $field.Object.Name}},
Field: field,
IsMethod: {{or $field.IsMethod $field.IsResolver}},
IsResolver: {{ $field.IsResolver }},
Child: func (ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
{{- if not $field.TypeReference.Definition.Fields }}
return nil, errors.New("field of type {{ $field.TypeReference.Definition.Name }} does not have child fields")
{{- else if ne $field.TypeReference.Definition.Kind "OBJECT" }}
return nil, errors.New("FieldContext.Child cannot be called on type {{ $field.TypeReference.Definition.Kind }}")
{{- else }}
switch field.Name {
{{- range $f := $field.TypeReference.Definition.Fields }}
case "{{ $f.Name }}":
return ec.{{ $field.ChildFieldContextFunc $f.Name }}(ctx, field)
{{- end }}
}
return nil, fmt.Errorf("no field named %q was found under type {{ $field.TypeReference.Definition.Name }}", field.Name)
{{- end }}
},
}
{{- if $field.Args }}
defer func () {
if r := recover(); r != nil {
err = ec.Recover(ctx, r)
ec.Error(ctx, err)
}
}()
ctx = graphql.WithFieldContext(ctx, fc)
if fc.Args, err = ec.{{ $field.ArgsFunc }}(ctx, field.ArgumentMap(ec.Variables)); err != nil {
ec.Error(ctx, err)
return
}
{{- end }}
return fc, nil
}
{{- end }}{{- end}}
{{ define "field" }}
{{- if .HasDirectives -}}
directive0 := func(rctx context.Context) (interface{}, error) {
ctx = rctx // use context from middleware stack in children
{{ template "fieldDefinition" . }}
}
{{ template "implDirectives" . }}
tmp, err := directive{{.ImplDirectives|len}}(rctx)
if err != nil {
return nil, graphql.ErrorOnPath(ctx, err)
}
if tmp == nil {
return nil, nil
}
if data, ok := tmp.({{if .Stream}}<-chan {{end}}{{ .TypeReference.GO | ref }}) ; ok {
return data, nil
}
return nil, fmt.Errorf(`unexpected type %T from directive, should be {{if .Stream}}<-chan {{end}}{{ .TypeReference.GO }}`, tmp)
{{- else -}}
ctx = rctx // use context from middleware stack in children
{{ template "fieldDefinition" . }}
{{- end -}}
{{ end }}
{{ define "fieldDefinition" }}
{{- if .IsResolver -}}
return ec.resolvers.{{ .ShortInvocation }}
{{- else if .IsMap -}}
switch v := {{.GoReceiverName}}[{{.Name|quote}}].(type) {
case {{if .Stream}}<-chan {{end}}{{.TypeReference.GO | ref}}:
return v, nil
case {{if .Stream}}<-chan {{end}}{{.TypeReference.Elem.GO | ref}}:
return &v, nil
case nil:
return ({{.TypeReference.GO | ref}})(nil), nil
default:
return nil, fmt.Errorf("unexpected type %T for field %s", v, {{ .Name | quote}})
}
{{- else if .IsMethod -}}
{{- if .VOkFunc -}}
v, ok := {{.GoReceiverName}}.{{.GoFieldName}}({{ .CallArgs }})
if !ok {
return nil, nil
}
return v, nil
{{- else if .NoErr -}}
return {{.GoReceiverName}}.{{.GoFieldName}}({{ .CallArgs }}), nil
{{- else -}}
return {{.GoReceiverName}}.{{.GoFieldName}}({{ .CallArgs }})
{{- end -}}
{{- else if .IsVariable -}}
return {{.GoReceiverName}}.{{.GoFieldName}}, nil
{{- end }}
{{- end }}