Don't generate empty argument objects

README.md

@@ -250,9 +250,9 @@ namespace GraphQL\SchemaObject;
 
 class RootQueryObject extends QueryObject
 {
-    const OBJECT_NAME = "query";
+    public const OBJECT_NAME = "query";
 
-    public function selectPokemons(RootPokemonsArgumentsObject $argsObject = null)
+    public function selectPokemons(?RootPokemonsArgumentsObject $argsObject = null): PokemonQueryObject
     {
         $object = new PokemonQueryObject("pokemons");
         if ($argsObject !== null) {
@@ -263,7 +263,7 @@ class RootQueryObject extends QueryObject
         return $object;
     }
 
-    public function selectPokemon(RootPokemonArgumentsObject $argsObject = null)
+    public function selectPokemon(?RootPokemonArgumentsObject $argsObject = null): PokemonQueryObject
     {
         $object = new PokemonQueryObject("pokemon");
         if ($argsObject !== null) {
@@ -287,7 +287,7 @@ class RootPokemonsArgumentsObject extends ArgumentsObject
 {
     protected $first;
 
-    public function setFirst($first)
+    public function setFirst($first): self
     {
         $this->first = $first;
 
@@ -308,14 +308,14 @@ class RootPokemonArgumentsObject extends ArgumentsObject
     protected $id;
     protected $name;
 
-    public function setId($id)
+    public function setId($id): self
     {
         $this->id = $id;
 
         return $this;
     }
 
-    public function setName($name)
+    public function setName($name): self
     {
         $this->name = $name;
 
@@ -336,30 +336,30 @@ namespace GraphQL\SchemaObject;
 
 class PokemonQueryObject extends QueryObject
 {
-    const OBJECT_NAME = "Pokemon";
+    public const OBJECT_NAME = "Pokemon";
 
-    public function selectId()
+    public function selectId(): self
     {
         $this->selectField("id");
 
         return $this;
     }
 
-    public function selectNumber()
+    public function selectNumber(): self
     {
         $this->selectField("number");
 
         return $this;
     }
 
-    public function selectName()
+    public function selectName(): self
     {
         $this->selectField("name");
 
         return $this;
     }
 
-    public function selectWeight(PokemonWeightArgumentsObject $argsObject = null)
+    public function selectWeight(?PokemonWeightArgumentsObject $argsObject = null): PokemonDimensionQueryObject
     {
         $object = new PokemonDimensionQueryObject("weight");
         if ($argsObject !== null) {
@@ -370,7 +370,7 @@ class PokemonQueryObject extends QueryObject
         return $object;
     }
 
-    public function selectHeight(PokemonHeightArgumentsObject $argsObject = null)
+    public function selectHeight(?PokemonHeightArgumentsObject $argsObject = null): PokemonDimensionQueryObject
     {
         $object = new PokemonDimensionQueryObject("height");
         if ($argsObject !== null) {
@@ -381,28 +381,28 @@ class PokemonQueryObject extends QueryObject
         return $object;
     }
 
-    public function selectClassification()
+    public function selectClassification(): self
     {
         $this->selectField("classification");
 
         return $this;
     }
 
-    public function selectTypes()
+    public function selectTypes(): self
     {
         $this->selectField("types");
 
         return $this;
     }
 
-    public function selectResistant()
+    public function selectResistant(): self
     {
         $this->selectField("resistant");
 
         return $this;
     }
 
-    public function selectAttacks(PokemonAttacksArgumentsObject $argsObject = null)
+    public function selectAttacks(?PokemonAttacksArgumentsObject $argsObject = null): PokemonAttackQueryObject
     {
         $object = new PokemonAttackQueryObject("attacks");
         if ($argsObject !== null) {
@@ -413,28 +413,28 @@ class PokemonQueryObject extends QueryObject
         return $object;
     }
 
-    public function selectWeaknesses()
+    public function selectWeaknesses(): self
     {
         $this->selectField("weaknesses");
 
         return $this;
     }
 
-    public function selectFleeRate()
+    public function selectFleeRate(): self
     {
         $this->selectField("fleeRate");
 
         return $this;
     }
 
-    public function selectMaxCP()
+    public function selectMaxCP(): self
     {
         $this->selectField("maxCP");
 
         return $this;
     }
 
-    public function selectEvolutions(PokemonEvolutionsArgumentsObject $argsObject = null)
+    public function selectEvolutions(?PokemonEvolutionsArgumentsObject $argsObject = null): PokemonQueryObject
     {
         $object = new PokemonQueryObject("evolutions");
         if ($argsObject !== null) {
@@ -445,7 +445,7 @@ class PokemonQueryObject extends QueryObject
         return $object;
     }
 
-    public function selectEvolutionRequirements(PokemonEvolutionRequirementsArgumentsObject $argsObject = null)
+    public function selectEvolutionRequirements(?PokemonEvolutionRequirementsArgumentsObject $argsObject = null): PokemonEvolutionRequirementQueryObject
     {
         $object = new PokemonEvolutionRequirementQueryObject("evolutionRequirements");
         if ($argsObject !== null) {
@@ -456,18 +456,18 @@ class PokemonQueryObject extends QueryObject
         return $object;
     }
 
-    public function selectMaxHP()
+    public function selectMaxHP(): self
     {
         $this->selectField("maxHP");
 
         return $this;
     }
 
-    public function selectImage()
+    public function selectImage(): self
     {
         $this->selectField("image");
 
         return $this;
     }
 }
-```
+```

src/Enumeration/FieldTypeKindEnum.php

@@ -9,11 +9,12 @@
  */
 class FieldTypeKindEnum
 {
-    const SCALAR       = 'SCALAR';
-    const LIST         = 'LIST';
-    const NON_NULL     = 'NON_NULL';
-    const OBJECT       = 'OBJECT';
-    const INPUT_OBJECT = 'INPUT_OBJECT';
-    const ENUM_OBJECT  = 'ENUM';
-    const UNION_OBJECT = 'UNION';
+    const SCALAR           = 'SCALAR';
+    const LIST             = 'LIST';
+    const NON_NULL         = 'NON_NULL';
+    const OBJECT           = 'OBJECT';
+    const INPUT_OBJECT     = 'INPUT_OBJECT';
+    const ENUM_OBJECT      = 'ENUM';
+    const UNION_OBJECT     = 'UNION';
+    const INTERFACE_OBJECT = 'INTERFACE';
 }

src/SchemaGenerator/CodeGenerator/CodeFile/ClassFile.php

@@ -188,7 +188,7 @@ protected function generateConstants(): string
         if (!empty($this->constants)) {
             foreach ($this->constants as $name => $value) {
                 $value = $this->serializeParameterValue($value);
-                $string .= "    const $name = $value;" . PHP_EOL;
+                $string .= "    public const $name = $value;" . PHP_EOL;
             }
         }
 

src/SchemaGenerator/CodeGenerator/InterfaceObjectBuilder.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace GraphQL\SchemaGenerator\CodeGenerator;
+
+use GraphQL\SchemaGenerator\CodeGenerator\CodeFile\ClassFile;
+use GraphQL\Util\StringLiteralFormatter;
+
+/**
+ * Class InterfaceObjectBuilder
+ *
+ * @package GraphQL\SchemaGenerator\CodeGenerator
+ */
+class InterfaceObjectBuilder extends QueryObjectClassBuilder
+{
+    /**
+     * @var ClassFile
+     */
+    protected $classFile;
+
+    /**
+     * EnumObjectBuilder constructor.
+     *
+     * @param string $writeDir
+     * @param string $objectName
+     * @param string $namespace
+     */
+    public function __construct(string $writeDir, string $objectName, string $namespace = self::DEFAULT_NAMESPACE)
+    {
+        $className = $objectName . 'QueryObject';
+
+        $this->classFile = new ClassFile($writeDir, $className);
+        $this->classFile->setNamespace($namespace);
+        if ($namespace !== self::DEFAULT_NAMESPACE) {
+            $this->classFile->addImport('GraphQL\\SchemaObject\\InterfaceObject');
+        }
+        $this->classFile->extendsClass('InterfaceObject');
+    }
+
+    /**
+     * @param string $typeName
+     */
+    public function addImplementation(string $typeName)
+    {
+        $upperCamelCaseTypeName = StringLiteralFormatter::formatUpperCamelCase($typeName);
+        $objectClassName = $typeName . 'QueryObject';
+        $method = "public function on$upperCamelCaseTypeName(): $objectClassName
+{
+    return \$this->addImplementation($objectClassName::class);
+}";
+        $this->classFile->addMethod($method);
+    }
+
+    /**
+     * @return void
+     */
+    public function build(): void
+    {
+        $this->classFile->writeFile();
+    }
+}

src/SchemaGenerator/CodeGenerator/ObjectClassBuilder.php

@@ -31,7 +31,7 @@ protected function addProperty($propertyName)
     protected function addScalarSetter($propertyName, $upperCamelName)
     {
         $lowerCamelName = lcfirst($upperCamelName);
-        $method = "public function set$upperCamelName($$lowerCamelName)
+        $method = "public function set$upperCamelName($$lowerCamelName): self
 {
     \$this->$propertyName = $$lowerCamelName;
 
@@ -48,7 +48,7 @@ protected function addScalarSetter($propertyName, $upperCamelName)
     protected function addListSetter(string $propertyName, string $upperCamelName, string $propertyType)
     {
         $lowerCamelName = lcfirst($upperCamelName);
-        $method = "public function set$upperCamelName(array $$lowerCamelName)
+        $method = "public function set$upperCamelName(array $$lowerCamelName): self
 {
     \$this->$propertyName = $$lowerCamelName;
 
@@ -65,7 +65,7 @@ protected function addListSetter(string $propertyName, string $upperCamelName, s
     protected function addEnumSetter(string $propertyName, string $upperCamelName, string $objectClass)
     {
         $lowerCamelName = lcfirst(str_replace('_', '', $objectClass));
-        $method         = "public function set$upperCamelName($$lowerCamelName)
+        $method         = "public function set$upperCamelName($$lowerCamelName): self
 {
     \$this->$propertyName = new RawObject($$lowerCamelName);
 
@@ -83,12 +83,12 @@ protected function addEnumSetter(string $propertyName, string $upperCamelName, s
     protected function addObjectSetter(string $propertyName, string $upperCamelName, string $objectClass)
     {
         $lowerCamelName = lcfirst(str_replace('_', '', $objectClass));
-        $method         = "public function set$upperCamelName($objectClass $$lowerCamelName)
+        $method         = "public function set$upperCamelName($objectClass $$lowerCamelName): self
 {
     \$this->$propertyName = $$lowerCamelName;
 
     return \$this;
 }";
         $this->classFile->addMethod($method);
     }
-}
+}