GraphQL IDL reader based on Yay PHP

example.graphqls

type Story implements Test {
    id: ID! @test(some: "any")
    text: String!
    isPublished: Boolean
    author: Author!
    comments: [Comment!]!
}

type Author {
    id: ID!
}

graphql.yay

macro ·global ·unsafe {
    type T_STRING·typeName ·optional(
        ·chain(
            ·token(T_IMPLEMENTS),
            ·lst(T_STRING·interfaceName, ·token(','))·interfaces
        )·interfacesDefinition
    ) {
        ·optional(
            ·lst(
                ·chain(
                    T_STRING·field,
                    ·token(':'),
                    ·chain(
                        ·either(
                            ·token(T_STRING),
                            ·chain(
                                ·token('['),
                                ·token(T_STRING),
                                ·optional(·token('!')),
                                ·token(']')
                            )
                        ),
                        ·optional(·token('!'))
                    )·fieldType
                ),
                ·optional(
                    ·ls(
                        ·chain(
                            ·token('@'),
                            T_STRING·directiveName,
                            ·optional(
                                ·chain(
                                    ·token('('),
                                    ·optional(
                                        ·lst(
                                            ·chain(
                                                T_STRING·directiveArgument,
                                                ·token(':'),
                                                ·either(
                                                    ·label(),
                                                    ·token(T_DNUMBER),
                                                    ·token(T_LNUMBER),
                                                    ·token(T_NUM_STRING),
                                                    ·token(T_ENCAPSED_AND_WHITESPACE),
                                                    ·token(T_CONSTANT_ENCAPSED_STRING)
                                                )·directiveValue
                                            ),
                                            ·token(',')
                                        )·directiveArguments
                                    ),
                                    ·token(')')
                                )
                            )
                        ),
                        ·optional(·token(T_WHITESPACE))
                    )·directive
                ),
                ·token(',')
            )·fields
        )
    }
} >> {
$this->registerObject([
    'name' => ··stringify(T_STRING·typeName),
    'fields' => [
        ·fields ··· {
            ··stringify(T_STRING·field) => [
                'type' => $this->type(··stringify(·fieldType)),
            ],
        }
    ],
    ·interfacesDefinition ··· {
        'interfaces' => [
            ·interfaces ··· {
                $this->type(··stringify(T_STRING·interfaceName)),
            }
        ],
    }
]);
}

output.php

<?php
$this->registerObject([
    'name'       => 'Story',
    'fields'     => [
        'id'          => [
            'type' => $this->type('ID!'),
        ],
        'text'        => [
            'type' => $this->type('String!'),
        ],
        'isPublished' => [
            'type' => $this->type('Boolean'),
        ],
        'author'      => [
            'type' => $this->type('Author!'),
        ],
        'comments'    => [
            'type' => $this->type('[Comment!]!'),
        ],
    ],
    'interfaces' => [
        $this->type('Test'),
    ],
]);

$this->registerObject([
    'name'   => 'Author',
    'fields' => [
        'id' => [
            'type' => $this->type('ID!'),
        ],
    ],
]);