Provide config to skip generating runtime for a directive

codegen/config/config.go

@@ -17,12 +17,13 @@ import (
 )
 
 type Config struct {
-	SchemaFilename StringList    `yaml:"schema,omitempty"`
-	Exec           PackageConfig `yaml:"exec"`
-	Model          PackageConfig `yaml:"model"`
-	Resolver       PackageConfig `yaml:"resolver,omitempty"`
-	Models         TypeMap       `yaml:"models,omitempty"`
-	StructTag      string        `yaml:"struct_tag,omitempty"`
+	SchemaFilename StringList                 `yaml:"schema,omitempty"`
+	Exec           PackageConfig              `yaml:"exec"`
+	Model          PackageConfig              `yaml:"model"`
+	Resolver       PackageConfig              `yaml:"resolver,omitempty"`
+	Models         TypeMap                    `yaml:"models,omitempty"`
+	StructTag      string                     `yaml:"struct_tag,omitempty"`
+	Directives     map[string]DirectiveConfig `yaml:"directives,omitempty"`
 }
 
 var cfgFilenames = []string{".gqlgen.yml", "gqlgen.yml", "gqlgen.yaml"}
@@ -33,6 +34,17 @@ func DefaultConfig() *Config {
 		SchemaFilename: StringList{"schema.graphql"},
 		Model:          PackageConfig{Filename: "models_gen.go"},
 		Exec:           PackageConfig{Filename: "generated.go"},
+		Directives: map[string]DirectiveConfig{
+			"skip": {
+				SkipRuntime: true,
+			},
+			"include": {
+				SkipRuntime: true,
+			},
+			"deprecated": {
+				SkipRuntime: true,
+			},
+		},
 	}
 }
 
@@ -265,6 +277,10 @@ func (tm TypeMap) Add(Name string, goType string) {
 	tm[Name] = modelCfg
 }
 
+type DirectiveConfig struct {
+	SkipRuntime bool `yaml:"skip_runtime"`
+}
+
 func inStrSlice(haystack []string, needle string) bool {
 	for _, v := range haystack {
 		if needle == v {

codegen/directive.go

@@ -24,11 +24,6 @@ func (b *builder) buildDirectives() (map[string]*Directive, error) {
 			return nil, errors.Errorf("directive with name %s already exists", name)
 		}
 
-		var builtin bool
-		if name == "skip" || name == "include" || name == "deprecated" {
-			builtin = true
-		}
-
 		var args []*FieldArgument
 		for _, arg := range dir.Arguments {
 			tr, err := b.Binder.TypeReference(arg.Type, nil)
@@ -55,7 +50,7 @@ func (b *builder) buildDirectives() (map[string]*Directive, error) {
 		directives[name] = &Directive{
 			Name:    name,
 			Args:    args,
-			Builtin: builtin,
+			Builtin: b.Config.Directives[name].SkipRuntime,
 		}
 	}