Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Apollo_Code_Generation [en]
Search
YuyaHorita
October 09, 2019
Programming
0
250
Apollo_Code_Generation [en]
YuyaHorita
October 09, 2019
Tweet
Share
More Decks by YuyaHorita
See All by YuyaHorita
mahjong-kun.pdf
horitayuya
0
95
Apollo_Code_Generation [jp]
horitayuya
0
2.4k
Difference Algorithm
horitayuya
11
5.9k
iOS11でのHEVC動画のHLS配信
horitayuya
2
1.7k
Other Decks in Programming
See All in Programming
ててべんす独演会〜Flowの全てを語ります〜
tbsten
1
220
育てるアーキテクチャ:戦い抜くPythonマイクロサービスの設計と進化戦略
fujidomoe
1
150
Catch Up: Go Style Guide Update
andpad
0
180
CSC509 Lecture 06
javiergs
PRO
0
240
なぜあの開発者はDevRelに伴走し続けるのか / Why Does That Developer Keep Running Alongside DevRel?
nrslib
3
370
詳しくない分野でのVibe Codingで困ったことと学び/vibe-coding-in-unfamiliar-area
shibayu36
3
4.5k
LLMとPlaywright/reg-suitを活用した jQueryリファクタリングの実際
kinocoboy2
4
670
ソフトウェア設計の実践的な考え方
masuda220
PRO
3
490
Cloudflare AgentsとAI SDKでAIエージェントを作ってみた
briete
0
120
Чего вы не знали о строках в Python – Василий Рябов, PythoNN
sobolevn
0
160
CSC305 Lecture 01
javiergs
PRO
1
400
monorepo の Go テストをはやくした〜い!~最小の依存解決への道のり~ / faster-testing-of-monorepos
convto
2
410
Featured
See All Featured
RailsConf 2023
tenderlove
30
1.2k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
657
61k
Navigating Team Friction
lara
189
15k
Build your cross-platform service in a week with App Engine
jlugia
232
18k
Raft: Consensus for Rubyists
vanstee
139
7.1k
Making Projects Easy
brettharned
119
6.4k
GitHub's CSS Performance
jonrohan
1032
460k
Agile that works and the tools we love
rasmusluckow
331
21k
Into the Great Unknown - MozCon
thekraken
40
2.1k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
23
1.5k
Facilitating Awesome Meetings
lara
56
6.6k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
Transcript
Apollo Code Generation
Introduction Yuya Horita iOS Engineer @CyberAgent, 2017/4 ~ 2019/5 Software
Engineer @M3, 2019/5 ~ GitHub: https://github.com/horita-yuya Twitter: https://twitter.com/horita_yuya Medium: https://medium.com/@yuyaHorita
None
schema.json *.graphql ʴ
schema.json File contains the results of an introspection query, or
query information > Conventionally this file is called schema.json Reference: https://www.apollographql.com/docs/ios/downloading-schema/
*.graphql Query definition file
schema.json *.graphql ʴ
schema.json *.graphql Token AST IR →
Lexer .graphql to Tokens
User.graphql
User.graphql Tokens query User ( $ id email @ include
… AddressFragment Debug : response ~~~~~ ~~~~~ ~~~~~ ~~~~~ ~~~~~ ~~~~~ ~~~~~ ~~~~~
query User ( $ @ … AddressFragment NAME Kind Value
undefined undefined undefined undefined COMMENT Debug Ignoring on parsing phase name : undefined
`#` itself is not a token kind. -> Other ways
to comment out, like `/**/`?
https://github.com/graphql/graphql-js/blob/master/src/language/lexer.js#L187 https://github.com/graphql/graphql-spec/issues/276 Reading implementation of lexer, it seems only `#`
indicates comment.
Parser Tokens to AST
query User AddressFragment NAME NAME NAME Operation definition name NAME
Tokens Semantics Operation name field name Fragment name
( $ @ … Beginning of definition of arguments, etc.
Variable Directive Fragment/Inline Fragment Spread Tokens : Argument, Alias, etc. Semantics
NAME Token: Semantics depends on syntax and value. Punctuator Token:
Semantics is fixed or depends on syntax ( $ : @
None
Document Hoge parsing operation function parseHoge is defined in graphql/language/parser.js
= OperationDefinition OperationType Name VariableDefinitions VariableDefinition SelectionSet VariableDefinition Recursive Descent Parsing
Tokens Rules + Starts with operation definition keyword `query`. The
next `User` is operation name. If `(` exists in just after `User`, variable definitions starts. It will end with `)`. Next `{` means the beginning of definition of SelectionSet ……
VariableDefinitions Document OperationDefinition FragmentDefinition AST OperationType VariableDefinition VariableDefinition
IR Generator AST to IR
None
None
None
VariableDefinition Type Variable Name value: string Name value: string
Type Variable Name value: id Name value: Int! VariableDefinitions VariableDefinition
VariableDefinition Type Variable Name value: withEmail Name value: Boolean!
VariableDefinitions VariableDefinition VariableDefinition + schema.json GraphQLType GraphQLType Type Variable Name
value: id Name value: Int! Type Variable Name value: withEmail Name value: Boolean!
IR
IR CompilerContext LegacyCompilerContext
Summary 1. AST from *.graphql. 2. IR from ast and
schema.json. 3. .swift, .ts, .scala from IR 4. It seems .kt doesn’t use apollo-tooling. All implementations are in apollo-android.
Appendix
Lexer Lexer: https://github.com/graphql/graphql-js/blob/master/src/language/lexer.js Token Kind: https://github.com/graphql/graphql-js/blob/master/src/language/tokenKind.js
Parser Parser: https://github.com/graphql/graphql-js/blob/master/src/language/parser.js AST: https://github.com/graphql/graphql-js/blob/master/src/language/ast.js AST Kind: https://github.com/graphql/graphql-js/blob/master/src/language/kinds.js
IR Compiler: https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo-codegen- core/src/compiler/index.ts