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Mercurial > core / lisp/lib/dat/parquet/gen.lisp

changeset 640: 642b3b82b20d
parent: b88bf15f60d0
author: Richard Westhaver <ellis@rwest.io>
date: Sun, 08 Sep 2024 17:35:03 -0400
permissions: -rw-r--r--
description: thrift fixes, org-get-with-inheritance init 
     1 ;;; gen.lisp --- Parquet Lisp Code Generator
     2 
     3 ;; 
     4 
     5 ;;; Code:
     6 (defpackage :dat/parquet/gen ;; not public API
     7   (:use :cl :std :dat/proto :dat/json)
     8   (:export :load-parquet))
     9 
    10 (in-package :dat/parquet/gen)
    11 
    12 (defparameter *parquet-json-file*
    13   (or (probe-file #.(asdf:system-relative-pathname :prelude #P"../.stash/parquet.json"))
    14       (warn "*PARQUET-JSON-FILE* not found")))
    15 
    16 (defparameter *parquet-output-file*
    17   #.(asdf:system-relative-pathname :dat #P"parquet/thrift.lisp"))
    18 
    19 (defvar *parquet-json* nil)
    20 
    21 (eval-always
    22   (defun %parquet-json-enums ()
    23     (json-getf *parquet-json* "enums"))
    24 
    25   (defun dat/parquet::parquet-json-enum-getf (name)
    26     (json-getf
    27      (find-if (lambda (x) (equal name (json-getf x "name"))) (%parquet-json-enums))
    28      "members"))
    29 
    30   (defun dat/parquet::snakecase-name-to-lisp-name (string)
    31     (string-upcase
    32      (substitute #\- #\_ string)))
    33 
    34   (defun dat/parquet::camelcase-name-to-lisp-name (string)
    35     (string-upcase
    36      (with-output-to-string (name)
    37        (loop for i from 0 below (length string)
    38              for c across string
    39              when (and (upper-case-p c) (not (zerop i)))
    40                do (write-char #\- name)
    41              do (write-char c name))))))
    42 
    43 (defvar *parquet-enums* nil)
    44 
    45 (defmacro define-parquet-enum (sym name)
    46   `(progn
    47      (defvar ,(symbolicate "*PARQUET-JSON-" sym "*")
    48        ',(mapcar (lambda (x) (keywordicate (dat/parquet::snakecase-name-to-lisp-name (json-getf x "name"))))
    49                  (dat/parquet::parquet-json-enum-getf name)))))
    50 
    51 (labels ((parse-type-id (type-id)
    52            (when type-id
    53              (string-case (type-id :default nil)
    54                ("bool" 'boolean)
    55                ("byte" 'signed-byte)
    56                ("i16" '(signed-byte 16))
    57                ("i32" '(signed-byte 32))
    58                ("i64" '(signed-byte 64))
    59                ("double" 'double-float)
    60                ("string" 'string)
    61                ("list" 'vector)
    62                ("binary" 'octet-vector)
    63                ("set" 'vector)
    64                ("enum" '(signed-byte 32))
    65                ("union" 'union)
    66                ("struct" 'struct))))
    67          (%intern (name)
    68            (if (stringp name)
    69                (symbolicate
    70                 (cond 
    71                   ((equal name "UUIDType") "PARQUET-UUID-TYPE")
    72                   (t (concatenate 'string
    73                                   "PARQUET-"
    74                                   (dat/parquet::camelcase-name-to-lisp-name name)))))
    75                name))
    76          (parse-type (o)
    77            (when o
    78              (string-case ((json-getf o "typeId"))
    79                ("union" (%intern (json-getf o "class")))
    80                ("list"
    81                 (if-let ((elt (json-getf o "elemType" nil)))
    82                   (%intern (parse-type elt))
    83                   (parse-type-id (json-getf o "elemTypeId"))))
    84                ("set"
    85                 (if-let ((elt (json-getf o "elemType" nil)))
    86                   (%intern (parse-type elt))
    87                   (parse-type-id (json-getf o "elemTypeId"))))
    88                ("struct" (%intern (json-getf o "class")))
    89                ("enum" (%intern (json-getf o "class")))))))
    90   (defun convert-parquet-struct-field-type (field) ;; technically part of thrift type system
    91     (let* ((type-id (parse-type-id (parquet-struct-field-type-id field)))
    92            (type (parse-type (parquet-struct-field-type field)))
    93            (required (parquet-struct-field-required field)))
    94           (let ((ret (cond
    95                        ((eql 'vector type-id) `(vector ,type))
    96                        (t (or type type-id)))))
    97             (if (equal "optional" required)
    98                 `(or null ,ret)
    99                 ret)))))
   100 
   101 (defparameter *parquet-structs* nil)
   102 
   103 (defstruct (parquet-struct
   104             (:constructor make-parquet-struct (name doc exceptionp unionp fields)))
   105   name doc exceptionp unionp (fields nil :type list))
   106 
   107 (defstruct (parquet-struct-field
   108             (:constructor make-parquet-struct-field (key name type-id type doc required)))
   109   key name type-id type doc required)
   110 
   111 (defun parquet-json-structs () ;; name doc isException isUnion fields
   112   (mapcar
   113    (lambda (s)
   114      (let ((name (json-getf s "name"))
   115            (doc (json-getf s "doc"))
   116            (exceptionp (json-getf s "isException"))
   117            (unionp (json-getf s "isUnion"))
   118            (fields (loop for f in (json-getf s "fields")
   119                          collect
   120                             (let ((key (json-getf f "key"))
   121                                   (name (json-getf f "name"))
   122                                   (type-id (json-getf f "typeId"))
   123                                   ;; json object - needs additional parsing
   124                                   (type (json-getf f "type"))
   125                                   (doc (json-getf f "doc"))
   126                                   (required (json-getf f "required")))
   127                               (make-parquet-struct-field key name type-id type doc required)))))
   128        (make-parquet-struct name doc exceptionp unionp fields)))
   129    (json-getf *parquet-json* "structs")))
   130 
   131 (defun parquet-json-namespaces ()
   132   (json-getf *parquet-json* "namespaces"))
   133 
   134 (eval-always
   135   (defun init-parquet-json (&optional (file *parquet-json-file*))
   136     (with-open-file (file file)
   137       (setq *parquet-json* (json-read file)))
   138     (setq *parquet-enums* (%parquet-json-enums))
   139     (setq *parquet-structs* (parquet-json-structs))))
   140 
   141 ;;; CLOS
   142 
   143 ;; (defmethod print-object ((obj parquet-object) stream)
   144 ;;   "Output a Parquet object to a stream."
   145 ;;   (print-unreadable-object (obj stream :type t)))
   146 
   147 (defmacro define-parquet-class (name superclasses slots &rest options)
   148   "Define a new subclass of PARQUET-OBJECT with NAME."
   149   `(defclass ,name ,@(if-let ((s superclasses)) (list s) `((dat/parquet::parquet-object))) ,slots ,@options))
   150 
   151 ;;; Codegen
   152 
   153 ;; 8)
   154 (eval-always
   155   (defun %define-parquet-structs ()
   156     "Define all known values in *PARQUET-STRUCTS* using DEFINE-PARQUET-CLASS (DEFCLASS)."
   157     (loop for struct in *parquet-structs*
   158           unless (null struct)
   159           collect (let* ((name (parquet-struct-name struct))
   160                          (doc (parquet-struct-doc struct))
   161                          (fields (parquet-struct-fields struct))
   162                          (class-name (symbolicate (cond
   163                                                ((equal name "UUIDType") "PARQUET-UUID-TYPE")
   164                                                (t (concatenate 'string
   165                                                                "PARQUET-"
   166                                                                (dat/parquet::camelcase-name-to-lisp-name name)))))))
   167                     `(progn
   168                        (defclass ,class-name (dat/parquet::parquet-object)
   169                                  (,@(mapcar (lambda (f)
   170                                               (let ((fdoc (parquet-struct-field-doc f))
   171                                                     (fname (dat/parquet::snakecase-name-to-lisp-name
   172                                                             (parquet-struct-field-name f))))
   173                                                 `(,(symbolicate fname)
   174                                                   ,@(when fdoc `(:documentation ,fdoc))
   175                                                   :initarg ,(keywordicate fname)
   176                                                   ;; TODO 2024-07-12: 
   177                                                   ,@(when (equal "optional" (parquet-struct-field-required f))
   178                                                       `(:initform nil))
   179                                                   ,@(when-let ((ty (convert-parquet-struct-field-type f)))
   180                                                       `(:type ,ty)))))
   181                                             fields))
   182                                  ,@(when doc `((:documentation ,doc)))))))))
   183 
   184 (defmacro define-parquet-type (name opts &body body)
   185   "Define a parquet type with DEFTYPE which maps to LISP-TYPE."
   186   `(progn (deftype ,(symbolicate "PARQUET-" (substitute #\- #\_ name)) ,opts ,@body)))
   187 
   188 (defun parse-parquet-thrift-definitions (&key (input *parquet-json-file*)
   189                                            (output #.(asdf:system-relative-pathname :dat "parquet/thrift.lisp")))
   190   (init-parquet-json input)
   191   (with-open-file (defs output :direction :output :if-exists :supersede :if-does-not-exist :create)
   192     (format defs ";;; ~a --- Parquet Thrift Definitions -*- buffer-read-only:t -*-
   193 
   194 ;; input = ~a
   195 
   196 ;; This file was generated automatically by
   197 ;; DAT/PARQUET/GEN:PARSE-PARQUET-THRIFT-DEFINITIONS
   198 
   199 ;; Do not modify.
   200 
   201 ;;; Code:
   202 (in-package :dat/parquet)" output input)
   203     (format defs "~2%")
   204     (let ((enums   '((define-parquet-enum types "Type")
   205                      (define-parquet-enum converted-types "ConvertedType")
   206                      (define-parquet-enum field-repetition-types "FieldRepetitionType")
   207                      (define-parquet-enum encodings "Encoding")
   208                      (define-parquet-enum compression-codecs "CompressionCodec")
   209                      (define-parquet-enum page-types "PageType")
   210                      (define-parquet-enum boundary-orders "BoundaryOrder")))
   211           (types '((define-parquet-type "BOOLEAN" () 'boolean)
   212                    (define-parquet-type "INT32" () '(signed-byte 32))
   213                    (define-parquet-type "INT64" () '(signed-byte 64))
   214                    (define-parquet-type "INT96" () '(signed-byte 96))
   215                    (define-parquet-type "FLOAT" () 'float)
   216                    (define-parquet-type "DOUBLE" () 'double-float)
   217                    (define-parquet-type "BYTE_ARRAY" (&optional size) `(octet-vector ,size))
   218                    (define-parquet-type "FIXED_LEN_BYTE_ARRAY" (size) `(octet-vector ,size))))
   219           (structs (mapcar #'macroexpand-1 (%define-parquet-structs))))
   220       ;; expands to a progn, so we just take the cdr
   221       (dolist (en enums)
   222         (dolist (f (cdr (macroexpand en)))
   223           (write f :stream defs :case :downcase :readably t)
   224           (terpri defs)))
   225       (dolist (ty types)
   226         (dolist (f (cdr (macroexpand ty)))
   227           (write f :stream defs :case :downcase :readably t)
   228           (terpri defs)))
   229       (dolist (st structs)
   230         (dolist (f (cdr (macroexpand st)))
   231           (write f :stream defs :case :downcase :readably t)
   232           (terpri defs))))))