github.com/OpenSourceProjects/gqlgen@v0.7.2/codegen/type_build.go (about) 1 package codegen 2 3 import ( 4 "go/types" 5 "strings" 6 7 "github.com/vektah/gqlparser/ast" 8 "golang.org/x/tools/go/loader" 9 ) 10 11 // namedTypeFromSchema objects for every graphql type, including scalars. There should only be one instance of Type for each thing 12 func (cfg *Config) buildNamedTypes() NamedTypes { 13 types := map[string]*NamedType{} 14 for _, schemaType := range cfg.schema.Types { 15 t := namedTypeFromSchema(schemaType) 16 17 if userEntry, ok := cfg.Models[t.GQLType]; ok && userEntry.Model != "" { 18 t.IsUserDefined = true 19 t.Package, t.GoType = pkgAndType(userEntry.Model) 20 } else if t.IsScalar { 21 t.Package = "github.com/99designs/gqlgen/graphql" 22 t.GoType = "String" 23 } 24 25 types[t.GQLType] = t 26 } 27 return types 28 } 29 30 func (cfg *Config) bindTypes(namedTypes NamedTypes, destDir string, prog *loader.Program) { 31 for _, t := range namedTypes { 32 if t.Package == "" { 33 continue 34 } 35 36 def, _ := findGoType(prog, t.Package, "Marshal"+t.GoType) 37 switch def := def.(type) { 38 case *types.Func: 39 sig := def.Type().(*types.Signature) 40 cpy := t.Ref 41 t.Marshaler = &cpy 42 43 t.Package, t.GoType = pkgAndType(sig.Params().At(0).Type().String()) 44 } 45 } 46 } 47 48 // namedTypeFromSchema objects for every graphql type, including primitives. 49 // don't recurse into object fields or interfaces yet, lets make sure we have collected everything first. 50 func namedTypeFromSchema(schemaType *ast.Definition) *NamedType { 51 switch schemaType.Kind { 52 case ast.Scalar, ast.Enum: 53 return &NamedType{GQLType: schemaType.Name, IsScalar: true} 54 case ast.Interface, ast.Union: 55 return &NamedType{GQLType: schemaType.Name, IsInterface: true} 56 case ast.InputObject: 57 return &NamedType{GQLType: schemaType.Name, IsInput: true} 58 default: 59 return &NamedType{GQLType: schemaType.Name} 60 } 61 } 62 63 // take a string in the form github.com/package/blah.Type and split it into package and type 64 func pkgAndType(name string) (string, string) { 65 parts := strings.Split(name, ".") 66 if len(parts) == 1 { 67 return "", name 68 } 69 70 return normalizeVendor(strings.Join(parts[:len(parts)-1], ".")), parts[len(parts)-1] 71 } 72 73 func (n NamedTypes) getType(t *ast.Type) *Type { 74 orig := t 75 var modifiers []string 76 for { 77 if t.Elem != nil { 78 modifiers = append(modifiers, modList) 79 t = t.Elem 80 } else { 81 if !t.NonNull { 82 modifiers = append(modifiers, modPtr) 83 } 84 if n[t.NamedType] == nil { 85 panic("missing type " + t.NamedType) 86 } 87 res := &Type{ 88 NamedType: n[t.NamedType], 89 Modifiers: modifiers, 90 ASTType: orig, 91 } 92 93 if res.IsInterface { 94 res.StripPtr() 95 } 96 97 return res 98 } 99 } 100 }