private function parseDirectiveDefinition()
    {
        $start       = $this->lexer->token;
        $description = $this->parseDescription();
        $this->expectKeyword('directive');
        $this->expect(Token::AT);
        $name = $this->parseName();
        $args = $this->parseArgumentDefs();
        $this->expectKeyword('on');
        $locations = $this->parseDirectiveLocations();

        return new DirectiveDefinitionNode([
            'name'        => $name,
            'arguments'   => $args,
            'locations'   => $locations,
            'loc'         => $this->loc($start),
            'description' => $description,
        ]);
    }
private function parseDirectiveDefinition()
    {
        $start       = $this->lexer->token;
        $description = $this->parseDescription();
        $this->expectKeyword('directive');
        $this->expect(Token::AT);
        $name = $this->parseName();
        $args = $this->parseArgumentDefs();
        $this->expectKeyword('on');
        $locations = $this->parseDirectiveLocations();

        return new DirectiveDefinitionNode([
            'name'        => $name,
            'arguments'   => $args,
            'locations'   => $locations,
            'loc'         => $this->loc($start),
            'description' => $description,
        ]);
    }
private function parseDirectiveDefinition ( ) { $ start = $ this -> lexer -> token ; $ description = $ this -> parseDescription ( ) ; $ this -> expectKeyword ( 'directive' ) ; $ this -> expect ( Token :: AT ) ; $ name = $ this -> parseName ( ) ; $ args = $ this -> parseArgumentDefs ( ) ; $ this -> expectKeyword ( 'on' ) ; $ locations = $ this -> parseDirectiveLocations ( ) ; return new DirectiveDefinitionNode ( [ 'name' => $ name , 'arguments' => $ args , 'locations' => $ locations , 'loc' => $ this -> loc ( $ start ) , 'description' => $ description , ] ) ; }
DirectiveDefinition :
- directive @ Name ArgumentsDefinition? on DirectiveLocations

@return DirectiveDefinitionNode

@throws SyntaxError
DirectiveDefinition : - directive @ Name ArgumentsDefinition? on DirectiveLocations