execute

type ExecutionArgs struct {
	Schema         *ast.Schema
	RawQuery       string
	Document       *ast.QueryDocument
	RootValue      interface{}            // optional
	VariableValues map[string]interface{} // optional
	OperationName  string                 // optional
	FieldResolver  FieldResolver          // optional
	TypeResolver   TypeResolver           // optional
}

type ExecutionContext struct {
	Schema        *ast.Schema
	RootValue     interface{}
	FieldResolver FieldResolver
	TypeResolver  TypeResolver
}

type FieldResolver func(ctx context.Context, source interface{}, args map[string]interface{}) (interface{}, *gqlerror.Error)

type TypeResolver func(ctx context.Context, value interface{}, schema *ast.Schema, abstractType *ast.Type) string