func BuildData()

in codegen/data.go [105:227]
101 lines of code
22 McCabe index (conditional complexity)

func BuildData(cfg *config.Config, plugins ...any) (*Data, error) {
	// We reload all packages to allow packages to be compared correctly.
	cfg.ReloadAllPackages()

	b := builder{
		Config: cfg,
		Schema: cfg.Schema,
	}

	b.Binder = b.Config.NewBinder()

	var err error
	b.Directives, err = b.buildDirectives()
	if err != nil {
		return nil, err
	}

	dataDirectives := make(map[string]*Directive)
	for name, d := range b.Directives {
		if !d.SkipRuntime {
			dataDirectives[name] = d
		}
	}

	s := Data{
		Config:        cfg,
		AllDirectives: dataDirectives,
		Schema:        b.Schema,
		Interfaces:    map[string]*Interface{},
		Plugins:       plugins,
	}

	for _, schemaType := range b.Schema.Types {
		switch schemaType.Kind {
		case ast.Object:
			obj, err := b.buildObject(schemaType)
			if err != nil {
				return nil, fmt.Errorf("unable to build object definition: %w", err)
			}

			s.Objects = append(s.Objects, obj)
		case ast.InputObject:
			input, err := b.buildObject(schemaType)
			if err != nil {
				return nil, fmt.Errorf("unable to build input definition: %w", err)
			}

			s.Inputs = append(s.Inputs, input)

		case ast.Union, ast.Interface:
			s.Interfaces[schemaType.Name], err = b.buildInterface(schemaType)
			if err != nil {
				return nil, fmt.Errorf("unable to bind to interface: %w", err)
			}
		}
	}

	if s.Schema.Query != nil {
		s.QueryRoot = s.Objects.ByName(s.Schema.Query.Name)
	} else {
		return nil, errors.New("query entry point missing")
	}

	if s.Schema.Mutation != nil {
		s.MutationRoot = s.Objects.ByName(s.Schema.Mutation.Name)
	}

	if s.Schema.Subscription != nil {
		s.SubscriptionRoot = s.Objects.ByName(s.Schema.Subscription.Name)
	}

	if err := b.injectIntrospectionRoots(&s); err != nil {
		return nil, err
	}

	s.ReferencedTypes = b.buildTypes()

	sort.Slice(s.Objects, func(i, j int) bool {
		return s.Objects[i].Definition.Name < s.Objects[j].Definition.Name
	})

	sort.Slice(s.Inputs, func(i, j int) bool {
		return s.Inputs[i].Definition.Name < s.Inputs[j].Definition.Name
	})

	if b.Binder.SawInvalid {
		// if we have a syntax error, show it
		err := cfg.Packages.Errors()
		if len(err) > 0 {
			return nil, err
		}

		// otherwise show a generic error message
		return nil, errors.New("invalid types were encountered while traversing the go source code, this probably means the invalid code generated isnt correct. add try adding -v to debug")
	}
	aSources := []AugmentedSource{}
	for _, s := range cfg.Sources {
		wd, err := os.Getwd()
		if err != nil {
			return nil, fmt.Errorf("failed to get working directory: %w", err)
		}
		outputDir := cfg.Exec.Dir()
		sourcePath := filepath.Join(wd, s.Name)
		relative, err := filepath.Rel(outputDir, sourcePath)
		if err != nil {
			return nil, fmt.Errorf("failed to compute path of %s relative to %s: %w", sourcePath, outputDir, err)
		}
		relative = filepath.ToSlash(relative)
		embeddable := true
		if strings.HasPrefix(relative, "..") || s.BuiltIn {
			embeddable = false
		}
		aSources = append(aSources, AugmentedSource{
			RelativePath: relative,
			Embeddable:   embeddable,
			BuiltIn:      s.BuiltIn,
			Source:       s.Input,
		})
	}
	s.AugmentedSources = aSources

	return &s, nil
}