Phases of Execution

When GraphQL receives a query string, it goes through these steps:

Tokenize: GraphQL::Language::Lexer splits the string into a stream of tokens
Parse: GraphQL::Language::Parser builds an abstract syntax tree (AST) out of the stream of tokens
Validate: GraphQL::StaticValidation::Validator validates the incoming AST as a valid query for the schema
Analyze: If there are any query analyzers, they are run with GraphQL::Analysis::AST.analyze_query
Execute: The query is traversed, resolve functions are called and the response is built
Respond: The response is returned as a GraphQL::Query::Result