Browse code
(init)
Ed Langley authored on 17/06/2018 23:47:56Showing 5 changed files
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+;;; -*- Mode:Lisp; Syntax:ANSI-Common-Lisp; Package: ASDF-USER -*- |
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+(in-package :asdf-user) |
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+ |
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+(defsystem :cl-edn |
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+ :description "" |
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+ :author "Ed L <edward@elangley.org>" |
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+ :license "MIT" |
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+ :depends-on (#:alexandria |
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+ #:uiop |
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+ #:serapeum |
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+ #:smug) |
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+ :serial t |
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+ :in-order-to ((test-op (test-op :cl-edn/test))) |
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+ :components ((:file "edn") |
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+ )) |
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+ |
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+(defsystem :cl-edn/fset |
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+ :depends-on (#:cl-edn |
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+ #:fset) |
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+ :components ((:file "fset-synthesize"))) |
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+ |
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+(defsystem :cl-edn/test |
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+ :depends-on (#:should-test) |
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+ :perform (test-op (o s) |
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+ (uiop:symbol-call :st '#:test |
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+ :package :edn-test)) |
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+ :components ((:file "test"))) |
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+(defpackage :edn |
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+ (:use :cl :smug) |
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+ (:export )) |
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+(defpackage :edn-primitives |
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+ (:use) |
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+ (:export :nil :true :false)) |
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+ |
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+(defconstant edn-primitives:nil 'edn-primitives:nil) |
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+(defconstant edn-primitives:true 'edn-primitives:true) |
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+(defconstant edn-primitives:false 'edn-primitives:false) |
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+ |
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+(in-package :edn) |
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+ |
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+(defun .satisfies (predicate &rest args) |
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+ (.bind (.item) |
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+ (lambda (x) |
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+ (if (apply predicate x args) |
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+ (.identity x) |
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+ (.fail))))) |
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+ |
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+(defun .zero-or-more (parser) |
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+ (.plus (.let* ((x parser) |
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+ (xs (.zero-or-more parser))) |
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+ (.identity (cons x xs))) |
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+ (.identity ()))) |
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+ |
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+(defun .one-or-more (parser) |
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+ (.let* ((x parser) |
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+ (y (.zero-or-more parser))) |
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+ (.identity (cons x y)))) |
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+ |
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+(defun .elements () |
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+ (.zero-or-more (.progn (.s) |
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+ (.element)))) |
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+ |
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+(defun .s () |
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+ (.zero-or-more |
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+ (.or (.whitespace) |
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+ (.comment) |
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+ (.discarded-element)))) |
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+ |
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+(defun .whitespace () |
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+ (.or (.char= #\space) |
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+ (.char= #\tab) |
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+ (.char= #\return) |
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+ (.char= #\newline) |
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+ (.char= #\,))) |
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+ |
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+(defun .comment () |
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+ (.let* ((result (.prog2 (.char= #\;) |
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+ (.zero-or-more (.and (.not (.or (.char= #\newline) |
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+ (.char= #\nul))) |
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+ (.item))) |
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+ (.or (.char= #\newline) |
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+ (.not (.item)))))) |
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+ (.identity (list :comment (coerce result 'string))))) |
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+ |
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+(defun .discarded-element () |
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+ (.progn (.string= "#_") |
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+ (.s) |
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+ (.element))) |
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+ |
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+(defun .alt (&rest r) |
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+ (reduce '.plus r)) |
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+ |
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+(defun .element () |
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+ (.or (.or (.nil) |
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+ (.boolean)) |
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+ (.alt (.symbol) |
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+ (.keyword) |
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+ (.number) |
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+ (.character) |
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+ (.string) |
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+ |
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+ (.let* ((pairs |
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+ (.prog2 (.char= #\{)
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+ (.progn (.s) |
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+ (.zero-or-more (.let* ((first (.prog1 (.element) (.s))) |
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+ (second (.prog1 (.element) (.s)))) |
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+ (.identity (list :pair first second))))) |
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+ (.char= #\})))) |
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+ (.identity (cons :map pairs))) |
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+ (.let* ((pairs |
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+ (.prog2 (.string= "#{")
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+ (.elements) |
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+ (.s) |
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+ (.char= #\})))) |
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+ (.identity (cons :set pairs))) |
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+ (.let* ((pairs |
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+ (.prog2 (.char= #\[) |
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+ (.elements) |
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+ (.s) |
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+ (.char= #\])))) |
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+ (.identity (cons :vector pairs))) |
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+ (.let* ((pairs |
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+ (.prog2 (.char= #\() |
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+ (.elements) |
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+ (.s) |
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+ (.char= #\))))) |
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+ (.identity (cons :list pairs))) |
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+ (.let* ((tag (.progn (.char= #\#) (.tag-symbol))) |
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+ (element (.progn (.s) (.element)))) |
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+ (.identity (list :tagged tag element))) |
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+ ))) |
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+ |
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+(defun .nil () |
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+ (.and (.string= "nil") |
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+ (.identity edn-primitives:nil))) |
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+ |
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+(defun .boolean () |
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+ (.let* ((r (.or (.string= "true") |
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+ (.string= "false")))) |
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+ (string-case:string-case (r) |
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+ ("true" (.identity edn-primitives:true))
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+ ("false" (.identity edn-primitives:false)))))
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+ |
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+(defun .symbol () |
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+ (.plus (.char= #\/) |
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+ (.let* ((ns (.optional (.prog1 (.name) (.char= #\/)))) |
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+ (name (.name))) |
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+ (.identity (list :symbol ns name))))) |
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+ |
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+(defun .tag-symbol () |
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+ (.let* ((first (.satisfies #'alpha-char-p)) |
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+ (rest (.let* ((ns (.or (.char= #\/) |
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+ (.optional (.prog1 (.name) (.char= #\/))))) |
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+ (name (.name))) |
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+ (.identity (list ns name))))) |
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+ (destructuring-bind (ns name) rest |
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+ (if ns |
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+ (if (eql ns #\/) |
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+ (.identity (list :symbol (format nil "~c" first) name)) |
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+ (.identity (list :symbol (format nil "~c~a" first ns) name))) |
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+ (.identity (list :symbol nil (format nil "~c~a" first name))))))) |
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+ |
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+(defun .keyword () |
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+ (.progn (.char= #\:) |
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+ (.let* ((ns (.optional (.prog1 (.name) (.char= #\/)))) |
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+ (name (.name))) |
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+ (.identity (list :keyword ns name))))) |
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+ |
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+(defun .name () |
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+ (.first (.plus (.let* ((first (.name-start-1)) |
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+ (rest (.zero-or-more (.name-constituent)))) |
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+ (.identity (format nil "~c~{~c~}" first rest)))
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+ (.let* ((first (.name-start-2)) |
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+ (second (.satisfies #'alpha-char-p)) |
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+ (rest (.zero-or-more (.name-constituent)))) |
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+ (.identity (format nil "~c~c~{~c~}" first second rest))))))
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+ |
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+(defun .name-start-1 () |
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+ (.satisfies (lambda (x) |
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+ (or (alpha-char-p x) |
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+ (member x '(#\! #\* #\? #\_ #\$ #\% #\& #\=)))))) |
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+ |
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+(defun .name-start-2 () |
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+ (.satisfies (lambda (x) |
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+ (or (alpha-char-p x) |
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+ (member x '(#\. #\- #\+)))))) |
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+ |
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+(defun .name-constituent () |
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+ (.or (.name-start-1) |
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+ (.name-start-2) |
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+ (.satisfies (lambda (x) |
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+ (or (digit-char-p x) |
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+ (member x '(#\# #\:))))))) |
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+(defun .number () |
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+ (.or (.float) |
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+ (.integer))) |
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+ |
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+(defun apply-sign (sign num) |
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+ (if sign |
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+ (ecase sign |
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+ (#\+ num) |
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+ (#\- (* -1 num))) |
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+ num)) |
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+ |
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+(defun .integer () |
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+ (.let* ((sign (.optional |
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+ (.or (.char= #\+) |
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+ (.char= #\-)))) |
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+ (num (.cardinal)) |
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+ (flag (.optional (.char= #\N)))) |
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+ flag |
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+ (.identity (apply-sign sign num)))) |
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+ |
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+(defun .float () |
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+ (.let* ((sign (.optional |
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+ (.or (.char= #\+) |
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+ (.char= #\-)))) |
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+ (num (.cardinal)) |
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+ (frac (.frac-exp))) |
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+ (destructuring-bind (mant exp) frac |
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+ (.identity (apply-sign sign (* (+ num mant) |
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+ (if exp |
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+ (expt 10 exp) |
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+ 1))))))) |
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+ |
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+(defun .frac-exp () |
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+ (.alt (.let* ((frac (.frac)) |
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+ (exp (.optional (.exp))) |
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+ (flag (.optional (.char= #\M)))) |
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+ flag |
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+ (.identity (list frac exp))) |
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+ (.let* ((exp (.exp)) |
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+ (flag (.optional (.char= #\M)))) |
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+ flag |
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+ (.identity (list 0 exp))) |
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+ (.let* ((flag (.optional (.char= #\M)))) |
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+ flag |
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+ (.identity (list 0 0))))) |
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+ |
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+(defun .frac () |
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+ (declare (optimize debug)) |
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+ (.let* ((nums (.first |
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+ (.progn (.char= #\.) |
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+ (.zero-or-more (.digit)))))) |
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+ (.identity |
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+ (if nums |
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+ (let ((num (parse-integer (coerce nums 'string)))) |
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+ (coerce (if (= num 0) |
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+ 0 |
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+ (/ num |
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+ (expt 10 |
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+ (floor |
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+ (1+ (log num |
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+ 10)))))) |
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+ 'float)) |
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+ 0)))) |
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+ |
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+(defun .exp () |
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+ (.progn (.char-equal #\e) |
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+ (.let* ((sign (.optional |
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+ (.or (.char= #\+) |
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+ (.char= #\-)))) |
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+ (num (.cardinal))) |
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+ (.identity (apply-sign sign num))))) |
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+ |
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+(defun .cardinal () |
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+ (.let* ((nums (.first |
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+ (.or (.let* ((first (.non-zero-digit)) |
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+ (rest (.zero-or-more (.digit)))) |
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+ (.identity (list* first rest))) |
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+ (.let* ((c (.digit))) |
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+ (.identity (list c))))))) |
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+ (.identity (parse-integer (coerce nums 'string))))) |
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+ |
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+(defun .digit () |
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+ (.satisfies #'digit-char-p)) |
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+ |
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+(defun .non-zero-digit () |
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+ (.satisfies (lambda (x) |
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+ (and (digit-char-p x) |
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+ (not (eql #\0 x)))))) |
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+ |
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+(defun .printable-character () |
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+ (.or (.satisfies (lambda (x) (char>= #\~ x #\!))) |
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+ (.satisfies (lambda (x) (>= (char-code x) #xA1))))) |
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+ |
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+(defun .character-name () |
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+ (.or (.string= "newline") |
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+ (.string= "space") |
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+ (.string= "tab") |
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+ (.string= "return") |
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+ (.string= "backspace") |
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+ (.string= "formfeed"))) |
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+ |
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+(defun .character () |
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+ (.let* ((char (.progn (.char= #\\) |
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+ (.or (.character-name) |
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+ (.printable-character))))) |
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+ (.identity (list :character char)))) |
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+ |
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+(defun .string-char () |
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+ (.and (.not (.char= #\nul)) |
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+ (.not (.char= #\")) |
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+ (.not (.char= #\\)) |
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+ (.item))) |
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+ |
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+(defun .string-escape () |
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+ (.let* ((esc (.or (.char= #\") |
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+ (.char= #\b) |
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+ (.char= #\t) |
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+ (.char= #\n) |
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+ (.char= #\f) |
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+ (.char= #\r) |
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+ (.char= #\\)))) |
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+ (.identity (format nil "\\~c" esc)))) |
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+ |
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+(defun combine (list) |
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+ (format nil "~{~a~}" list))
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+ |
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+(defun .string () |
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+ (.let* ((string (.prog2 (.char= #\") |
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+ (.zero-or-more (.or (.string-char) |
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+ (.progn (.char= #\\) |
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+ (.string-escape)))) |
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+ (.char= #\")))) |
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+ (.identity (list :string (combine string))))) |
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+ |
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+(defgeneric synthesize-compound (implementation discriminator args)) |
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+(defgeneric synthesize (implementation args)) |
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+(in-package :edn) |
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+ |
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+(defmethod synthesize ((implementation (eql 'fset)) thing) |
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+ (typecase thing |
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+ (list (synthesize-compound implementation (car thing) (cdr thing))) |
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+ (t thing))) |
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+ |
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+ |
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+(defmethod synthesize-compound ((implementation (eql 'fset)) (discriminator (eql :map)) args) |
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+ (fset:convert 'fset:map |
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+ (mapcar (fw.lu:destructuring-lambda ((p k v)) |
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+ (declare (ignore p)) |
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+ (cons (synthesize implementation k) |
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+ (synthesize implementation v))) |
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+ args))) |
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+ |
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+(defmethod synthesize-compound ((implementation (eql 'fset)) (discriminator (eql :set)) args) |
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+ (fset:convert 'fset:set |
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+ (mapcar (lambda (a) |
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+ (synthesize implementation a)) |
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+ args))) |
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+ |
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+(defmethod synthesize-compound ((implementation (eql 'fset)) (discriminator (eql :vector)) args) |
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+ (fset:convert 'fset:seq |
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+ (mapcar (lambda (a) |
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+ (synthesize implementation a)) |
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+ args))) |
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+ |
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+(defmethod synthesize-compound ((implementation (eql 'fset)) (discriminator (eql :list)) args) |
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+ (mapcar (lambda (a) |
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+ (synthesize implementation a)) |
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+ args)) |
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+ |
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+(defmethod synthesize-compound (implementation (discriminator (eql :keyword)) args) |
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+ (destructuring-bind (ns name) args |
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+ (alexandria:make-keyword (if ns |
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+ (format nil "~a/~a" ns name) |
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+ (format nil "~a" name))))) |
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+ |
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+(defmethod synthesize-compound (implementation (discriminator (eql :string)) args) |
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+ (car args)) |
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+ |
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+(defmethod synthesize-compound (implementation (discriminator (eql :symbol)) args) |
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+ (destructuring-bind (ns name) args |
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+ (make-symbol (if ns |
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+ (format nil "~a/~a" ns name) |
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+ (format nil "~a" name))))) |
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new file mode 100644 |
| ... | ... |
@@ -0,0 +1,27 @@ |
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+(defpackage :edn-test |
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+ (:use :cl :st) |
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+ (:export )) |
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+(in-package :edn-test) |
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+ |
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+(deftest edn-parser () |
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+ (should be equal |
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+ '((:map (:pair 1 1))) |
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+ (smug:parse (edn::.elements) "{ 1 1 }"))
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+ (should be equal |
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+ '((:vector 1 1)) |
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+ (smug:parse (edn::.elements) "[ 1 1 ]")) |
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+ (should be equal |
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+ '((:set 1 1)) |
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+ (smug:parse (edn::.elements) "#{ 1 1 }"))
|
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+ (should be equal |
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+ '((:tagged (:symbol nil "foobar") (:vector 1 1))) |
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+ (smug:parse (edn::.elements) "#foobar [ 1 1 ]")) |
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+ (should be equal |
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+ '(:list |
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+ (:set |
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+ (:vector |
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+ (:map (:pair edn-primitives:nil edn-primitives:true) |
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+ (:pair edn-primitives:false edn-primitives:nil))))) |
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+ (car (smug:parse (smug:.prog1 (edn::.elements) (smug:.not (smug:.item))) |
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+ "(#{[{nil true,false nil}]})")))
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+ ) |