## Summary: In this commit I begin the journey to add the long-awaited support for interfaces (part of #8). Well, it's not the beginning: I already had some half-written broken code around. But it's the first fully functional support, and especially, the first *tested* support; it's probably best to review the nontrivially-changed code as if it were new. Conceptually, the code so far is pretty simple: we generate an interface type, and the implementations. (That code is in fact mostly unchanged.) The complexity comes in because encoding/json doesn't know how to unmarshal that. So we have to add an UnmarshalJSON method, which actually has to be on the types with interface-type fields, that knows how. I factored it into two methods, such that that UnmarshalJSON method is just glue, and then there's a separate function, corresponding to each interface-type, that actually does all the work. (If only one could just write it as an actual method!) The method uses the same trick suggested to me by a few others in another context to deserialize all but one field, then handle that field specially, which is discussed in the code. This still has some limitations, which will be lifted in future commits: - it doesn't allow for list-of-interface fields - it requires that you manually ask for `__typename` - it doesn't support fragments, i.e. you can only query for interface fields, not concrete-type-specific ones But it works, even in integration tests, which is progress! As a part of this, I added a proper config option for the "allow broken features" flag, since I need to be able to set it from the integration tests which are in a separate package (and actually shell out via `go generate`). I also renamed what was to be the first case (InterfaceNoFragments), and replaced it with a further-simplified version (avoiding list-of-interface fields. [1] https://github.com/benjaminjkraft/notes/blob/master/go-json-interfaces.md Issue: https://github.com/Khan/genqlient/issues/8 ## Test plan: make tesc Author: benjaminjkraft Reviewers: dnerdy, benjaminjkraft, aberkan, csilvers, MiguelCastillo Required Reviewers: Approved by: dnerdy Checks: ⌛ Test (1.17), ✅ Test (1.16), ⌛ Test (1.15), ⌛ Test (1.14), ⌛ Test (1.13), ✅ Lint, ✅ Test (1.17), ⌛ Test (1.16), ⌛ Test (1.15), ⌛ Test (1.14), ⌛ Test (1.13), ✅ Lint Pull request URL: https://github.com/Khan/genqlient/pull/52
344 lines
13 KiB
Go
344 lines
13 KiB
Go
package test
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// Code generated by github.com/Khan/genqlient, DO NOT EDIT.
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import (
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"encoding/json"
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"fmt"
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"github.com/Khan/genqlient/graphql"
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"github.com/Khan/genqlient/internal/testutil"
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)
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// InterfaceNestingResponse is returned by InterfaceNesting on success.
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type InterfaceNestingResponse struct {
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Root InterfaceNestingRootTopic `json:"root"`
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}
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// InterfaceNestingRootTopic includes the requested fields of the GraphQL type Topic.
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type InterfaceNestingRootTopic struct {
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// ID is documented in the Content interface.
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Id testutil.ID `json:"id"`
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Children []InterfaceNestingRootTopicChildrenContent `json:"children"`
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}
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// InterfaceNestingRootTopicChildrenArticle includes the requested fields of the GraphQL type Article.
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type InterfaceNestingRootTopicChildrenArticle struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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Parent InterfaceNestingRootTopicChildrenArticleParentTopic `json:"parent"`
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}
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// InterfaceNestingRootTopicChildrenArticleParentTopic includes the requested fields of the GraphQL type Topic.
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type InterfaceNestingRootTopicChildrenArticleParentTopic struct {
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Typename string `json:"__typename"`
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// ID is documented in the Content interface.
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Id testutil.ID `json:"id"`
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Children []InterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent `json:"children"`
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}
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// InterfaceNestingRootTopicChildrenArticleParentTopicChildrenArticle includes the requested fields of the GraphQL type Article.
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type InterfaceNestingRootTopicChildrenArticleParentTopicChildrenArticle struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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}
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// InterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent includes the requested fields of the GraphQL type Content.
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// The GraphQL type's documentation follows.
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//
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// Content is implemented by various types like Article, Video, and Topic.
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type InterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent interface {
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implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent()
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}
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func (v *InterfaceNestingRootTopicChildrenArticleParentTopicChildrenArticle) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent() {
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}
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func (v *InterfaceNestingRootTopicChildrenArticleParentTopicChildrenVideo) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent() {
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}
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func (v *InterfaceNestingRootTopicChildrenArticleParentTopicChildrenTopic) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent() {
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}
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func __unmarshalInterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent(v *InterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent, m json.RawMessage) error {
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if string(m) == "null" {
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return nil
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}
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var tn struct {
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TypeName string `json:"__typename"`
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}
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err := json.Unmarshal(m, &tn)
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if err != nil {
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return err
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}
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switch tn.TypeName {
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case "Article":
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*v = new(InterfaceNestingRootTopicChildrenArticleParentTopicChildrenArticle)
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return json.Unmarshal(m, *v)
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case "Video":
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*v = new(InterfaceNestingRootTopicChildrenArticleParentTopicChildrenVideo)
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return json.Unmarshal(m, *v)
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case "Topic":
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*v = new(InterfaceNestingRootTopicChildrenArticleParentTopicChildrenTopic)
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return json.Unmarshal(m, *v)
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default:
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return fmt.Errorf(
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`Unexpected concrete type for InterfaceNestingRootTopicChildrenArticleParentTopicChildrenContent: "%v"`, tn.TypeName)
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}
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}
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// InterfaceNestingRootTopicChildrenArticleParentTopicChildrenTopic includes the requested fields of the GraphQL type Topic.
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type InterfaceNestingRootTopicChildrenArticleParentTopicChildrenTopic struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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}
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// InterfaceNestingRootTopicChildrenArticleParentTopicChildrenVideo includes the requested fields of the GraphQL type Video.
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type InterfaceNestingRootTopicChildrenArticleParentTopicChildrenVideo struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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}
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// InterfaceNestingRootTopicChildrenContent includes the requested fields of the GraphQL type Content.
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// The GraphQL type's documentation follows.
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//
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// Content is implemented by various types like Article, Video, and Topic.
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type InterfaceNestingRootTopicChildrenContent interface {
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implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContent()
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}
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func (v *InterfaceNestingRootTopicChildrenArticle) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContent() {
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}
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func (v *InterfaceNestingRootTopicChildrenVideo) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContent() {
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}
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func (v *InterfaceNestingRootTopicChildrenTopic) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenContent() {
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}
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func __unmarshalInterfaceNestingRootTopicChildrenContent(v *InterfaceNestingRootTopicChildrenContent, m json.RawMessage) error {
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if string(m) == "null" {
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return nil
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}
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var tn struct {
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TypeName string `json:"__typename"`
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}
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err := json.Unmarshal(m, &tn)
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if err != nil {
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return err
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}
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switch tn.TypeName {
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case "Article":
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*v = new(InterfaceNestingRootTopicChildrenArticle)
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return json.Unmarshal(m, *v)
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case "Video":
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*v = new(InterfaceNestingRootTopicChildrenVideo)
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return json.Unmarshal(m, *v)
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case "Topic":
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*v = new(InterfaceNestingRootTopicChildrenTopic)
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return json.Unmarshal(m, *v)
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default:
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return fmt.Errorf(
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`Unexpected concrete type for InterfaceNestingRootTopicChildrenContent: "%v"`, tn.TypeName)
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}
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}
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// InterfaceNestingRootTopicChildrenTopic includes the requested fields of the GraphQL type Topic.
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type InterfaceNestingRootTopicChildrenTopic struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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Parent InterfaceNestingRootTopicChildrenTopicParentTopic `json:"parent"`
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}
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// InterfaceNestingRootTopicChildrenTopicParentTopic includes the requested fields of the GraphQL type Topic.
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type InterfaceNestingRootTopicChildrenTopicParentTopic struct {
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Typename string `json:"__typename"`
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// ID is documented in the Content interface.
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Id testutil.ID `json:"id"`
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Children []InterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent `json:"children"`
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}
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// InterfaceNestingRootTopicChildrenTopicParentTopicChildrenArticle includes the requested fields of the GraphQL type Article.
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type InterfaceNestingRootTopicChildrenTopicParentTopicChildrenArticle struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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}
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// InterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent includes the requested fields of the GraphQL type Content.
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// The GraphQL type's documentation follows.
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//
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// Content is implemented by various types like Article, Video, and Topic.
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type InterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent interface {
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implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent()
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}
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func (v *InterfaceNestingRootTopicChildrenTopicParentTopicChildrenArticle) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent() {
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}
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func (v *InterfaceNestingRootTopicChildrenTopicParentTopicChildrenVideo) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent() {
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}
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func (v *InterfaceNestingRootTopicChildrenTopicParentTopicChildrenTopic) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent() {
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}
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func __unmarshalInterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent(v *InterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent, m json.RawMessage) error {
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if string(m) == "null" {
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return nil
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}
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var tn struct {
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TypeName string `json:"__typename"`
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}
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err := json.Unmarshal(m, &tn)
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if err != nil {
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return err
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}
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switch tn.TypeName {
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case "Article":
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*v = new(InterfaceNestingRootTopicChildrenTopicParentTopicChildrenArticle)
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return json.Unmarshal(m, *v)
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case "Video":
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*v = new(InterfaceNestingRootTopicChildrenTopicParentTopicChildrenVideo)
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return json.Unmarshal(m, *v)
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case "Topic":
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*v = new(InterfaceNestingRootTopicChildrenTopicParentTopicChildrenTopic)
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return json.Unmarshal(m, *v)
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default:
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return fmt.Errorf(
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`Unexpected concrete type for InterfaceNestingRootTopicChildrenTopicParentTopicChildrenContent: "%v"`, tn.TypeName)
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}
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}
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// InterfaceNestingRootTopicChildrenTopicParentTopicChildrenTopic includes the requested fields of the GraphQL type Topic.
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type InterfaceNestingRootTopicChildrenTopicParentTopicChildrenTopic struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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}
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// InterfaceNestingRootTopicChildrenTopicParentTopicChildrenVideo includes the requested fields of the GraphQL type Video.
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type InterfaceNestingRootTopicChildrenTopicParentTopicChildrenVideo struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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}
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// InterfaceNestingRootTopicChildrenVideo includes the requested fields of the GraphQL type Video.
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type InterfaceNestingRootTopicChildrenVideo struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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Parent InterfaceNestingRootTopicChildrenVideoParentTopic `json:"parent"`
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}
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// InterfaceNestingRootTopicChildrenVideoParentTopic includes the requested fields of the GraphQL type Topic.
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type InterfaceNestingRootTopicChildrenVideoParentTopic struct {
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Typename string `json:"__typename"`
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// ID is documented in the Content interface.
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Id testutil.ID `json:"id"`
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Children []InterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent `json:"children"`
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}
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// InterfaceNestingRootTopicChildrenVideoParentTopicChildrenArticle includes the requested fields of the GraphQL type Article.
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type InterfaceNestingRootTopicChildrenVideoParentTopicChildrenArticle struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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}
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// InterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent includes the requested fields of the GraphQL type Content.
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// The GraphQL type's documentation follows.
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//
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// Content is implemented by various types like Article, Video, and Topic.
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type InterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent interface {
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implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent()
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}
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func (v *InterfaceNestingRootTopicChildrenVideoParentTopicChildrenArticle) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent() {
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}
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func (v *InterfaceNestingRootTopicChildrenVideoParentTopicChildrenVideo) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent() {
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}
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func (v *InterfaceNestingRootTopicChildrenVideoParentTopicChildrenTopic) implementsGraphQLInterfaceInterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent() {
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}
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func __unmarshalInterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent(v *InterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent, m json.RawMessage) error {
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if string(m) == "null" {
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return nil
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}
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var tn struct {
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TypeName string `json:"__typename"`
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}
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err := json.Unmarshal(m, &tn)
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if err != nil {
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return err
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}
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switch tn.TypeName {
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case "Article":
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*v = new(InterfaceNestingRootTopicChildrenVideoParentTopicChildrenArticle)
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return json.Unmarshal(m, *v)
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case "Video":
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*v = new(InterfaceNestingRootTopicChildrenVideoParentTopicChildrenVideo)
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return json.Unmarshal(m, *v)
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case "Topic":
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*v = new(InterfaceNestingRootTopicChildrenVideoParentTopicChildrenTopic)
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return json.Unmarshal(m, *v)
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default:
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return fmt.Errorf(
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`Unexpected concrete type for InterfaceNestingRootTopicChildrenVideoParentTopicChildrenContent: "%v"`, tn.TypeName)
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}
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}
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// InterfaceNestingRootTopicChildrenVideoParentTopicChildrenTopic includes the requested fields of the GraphQL type Topic.
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type InterfaceNestingRootTopicChildrenVideoParentTopicChildrenTopic struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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}
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// InterfaceNestingRootTopicChildrenVideoParentTopicChildrenVideo includes the requested fields of the GraphQL type Video.
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type InterfaceNestingRootTopicChildrenVideoParentTopicChildrenVideo struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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}
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func InterfaceNesting(
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client graphql.Client,
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) (*InterfaceNestingResponse, error) {
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var retval InterfaceNestingResponse
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err := client.MakeRequest(
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nil,
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"InterfaceNesting",
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`
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query InterfaceNesting {
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root {
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id
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children {
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__typename
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id
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parent {
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__typename
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id
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children {
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__typename
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id
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}
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}
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}
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}
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}
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`,
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&retval,
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nil,
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)
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return &retval, err
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}
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