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package codegen
import (
"go/types"
"strings"
"github.com/vektah/gqlparser/ast"
"golang.org/x/tools/go/loader"
)
// namedTypeFromSchema objects for every graphql type, including scalars. There should only be one instance of Type for each thing
func (cfg *Config) buildNamedTypes() NamedTypes {
types := map[string]*NamedType{}
for _, schemaType := range cfg.schema.Types {
t := namedTypeFromSchema(schemaType)
if userEntry, ok := cfg.Models[t.GQLType]; ok && userEntry.Model != "" {
t.IsUserDefined = true
t.Package, t.GoType = pkgAndType(userEntry.Model)
} else if t.IsScalar {
t.Package = "github.com/99designs/gqlgen/graphql"
t.GoType = "String"
}
types[t.GQLType] = t
}
return types
}
func (cfg *Config) bindTypes(namedTypes NamedTypes, destDir string, prog *loader.Program) {
for _, t := range namedTypes {
if t.Package == "" {
continue
}
def, _ := findGoType(prog, t.Package, "Marshal"+t.GoType)
switch def := def.(type) {
case *types.Func:
sig := def.Type().(*types.Signature)
cpy := t.Ref
t.Marshaler = &cpy
t.Package, t.GoType = pkgAndType(sig.Params().At(0).Type().String())
}
}
}
// namedTypeFromSchema objects for every graphql type, including primitives.
// don't recurse into object fields or interfaces yet, lets make sure we have collected everything first.
func namedTypeFromSchema(schemaType *ast.Definition) *NamedType {
switch schemaType.Kind {
case ast.Scalar, ast.Enum:
return &NamedType{GQLType: schemaType.Name, IsScalar: true}
case ast.Interface, ast.Union:
return &NamedType{GQLType: schemaType.Name, IsInterface: true}
case ast.InputObject:
return &NamedType{GQLType: schemaType.Name, IsInput: true}
default:
return &NamedType{GQLType: schemaType.Name}
}
}
// take a string in the form github.com/package/blah.Type and split it into package and type
func pkgAndType(name string) (string, string) {
parts := strings.Split(name, ".")
if len(parts) == 1 {
return "", name
}
return normalizeVendor(strings.Join(parts[:len(parts)-1], ".")), parts[len(parts)-1]
}
func (n NamedTypes) getType(t *ast.Type) *Type {
orig := t
var modifiers []string
for {
if t.Elem != nil {
modifiers = append(modifiers, modList)
t = t.Elem
} else {
if !t.NonNull {
modifiers = append(modifiers, modPtr)
}
if n[t.NamedType] == nil {
panic("missing type " + t.NamedType)
}
res := &Type{
NamedType: n[t.NamedType],
Modifiers: modifiers,
ASTType: orig,
}
if res.IsInterface {
res.StripPtr()
}
return res
}
}
}
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