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;;;; irregex.scm - container for irregex-core.scm
;
; Copyright (c) 2010-2021, The CHICKEN Team
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
; conditions are met:
;
; Redistributions of source code must retain the above copyright notice, this list of conditions and the following
; disclaimer.
; Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
; disclaimer in the documentation and/or other materials provided with the distribution.
; Neither the name of the author nor the names of its contributors may be used to endorse or promote
; products derived from this software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
; AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
; OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
; POSSIBILITY OF SUCH DAMAGE.
(declare
(unit irregex)
(no-procedure-checks)
(fixnum))
(module chicken.irregex
(;; Constructors, accessors and predicates
irregex irregex? string->sre maybe-string->sre sre->irregex
irregex-names irregex-num-submatches string->irregex
;; Chunking constructor
make-irregex-chunker
;; Main API
irregex-extract irregex-fold irregex-match irregex-match?
irregex-search irregex-split irregex-replace irregex-replace/all
;; Chunked main API
irregex-fold/chunked irregex-match/chunked irregex-search/chunked
;; Match extraction API
irregex-match-data? irregex-match-names
irregex-match-start-index irregex-match-end-index
irregex-match-num-submatches irregex-match-substring
irregex-match-valid-index?
;; Chunked match API
irregex-match-start-chunk irregex-match-end-chunk
irregex-match-subchunk
;; Utilities
glob->sre sre->string irregex-opt irregex-quote)
(import scheme chicken.base chicken.fixnum chicken.syntax chicken.type)
(import-for-syntax chicken.fixnum)
(include "common-declarations.scm")
;; These should probably be taken out of irregex upstream
(declare (unused filter integer-log cset-size remove))
;; Due to usual-integrations, find is the one from library.scm,
;; so find-tail is unused (it's only used in the "find" definition)
(declare (unused find-tail))
;; This is to silence an "always true" warning that we can't fix
;; because we don't want to needlessly change irregex-core.
(declare (type (*allow-utf8-mode?* boolean)))
(define-syntax build-cache
(er-macro-transformer
(lambda (x r c)
;; (build-cache N ARG FAIL)
(let* ((n (cadr x))
(n2 (* n 2))
(arg (caddr x))
(fail (cadddr x))
(%cache (r 'cache))
(%index (r 'index))
(%arg (r 'arg))
(%let (r 'let))
(%let* (r 'let*))
(%if (r 'if))
(%fx+ (r 'fx+))
(%fxmod (r 'fxmod))
(%equal? (r 'equal?))
(%quote (r 'quote))
(%tmp (r 'tmp))
(%begin (r 'begin))
(cache (make-vector (add1 n2) #f)))
(##sys#setslot cache n2 0) ; last slot: current index
`(,%let* ((,%cache (,%quote ,cache)) ; we mutate a literal vector
(,%arg ,arg))
,(let fold ((i 0))
(if (fx>= i n)
;; this should be thread-safe: a context-switch can only
;; happen before this code and in the call to FAIL.
`(,%let ((,%tmp ,fail)
(,%index (##sys#slot ,%cache ,n2)))
(##sys#setslot ,%cache ,%index ,%arg)
(##sys#setslot ,%cache (,%fx+ ,%index 1) ,%tmp)
(##sys#setislot
,%cache ,n2 (,%fxmod (,%fx+ ,%index 2) ,n2))
,%tmp)
`(,%if (,%equal? (##sys#slot ,%cache ,(* i 2)) ,%arg)
(##sys#slot ,%cache ,(add1 (* i 2)))
,(fold (add1 i))))))))))
(declare (unused %%string-copy!))
(define-compiler-syntax %%string-copy!
(syntax-rules ()
((_ to tstart from fstart fend)
(let ((x to)
(y tstart)
(z from)
(u fstart)
(v fend))
(##core#inline "C_substring_copy" z x u v y)))))
(declare (unused %substring=?))
(define-compiler-syntax %substring=?
(syntax-rules ()
((_ a b start1 start2 len)
(##core#inline "C_substring_compare" a b start1 start2 len))))
(define-compiler-syntax make-irregex
(syntax-rules ()
((_ dfa dfa/search nfa flags submatches lengths names)
(##sys#make-structure
'regexp dfa dfa/search nfa flags submatches lengths names))))
(define-compiler-syntax make-irregex-match
(syntax-rules ()
((_ count names)
(##sys#make-structure
'regexp-match
(make-vector (* 4 (+ 2 count)) #f) ; #1: submatches
names ; #2: (guess)
#f ; #3: chunka
#f)))) ; #4: fail
(declare (unused reverse))
(define-compiler-syntax reverse
(syntax-rules ()
((_ lst) (##sys#fast-reverse lst))))
(declare (unused bit-shl))
(define-compiler-syntax bit-shl
(syntax-rules ()
((_ n i) (fxshl n i))))
(declare (unused bit-shr))
(define-compiler-syntax bit-shr
(syntax-rules ()
((_ n i) (fxshr n i))))
(declare (unused bit-not))
(define-compiler-syntax bit-not
(syntax-rules ()
((_ n) (fxnot n))))
(declare (unused bit-ior))
(define-compiler-syntax bit-ior
(syntax-rules ()
((_ a b) (fxior a b))))
(declare (unused bit-and))
(define-compiler-syntax bit-and
(syntax-rules ()
((_ a b) (fxand a b))))
(define-compiler-syntax match-vector-ref
(syntax-rules ()
((_ m i) (##sys#slot (##sys#slot m 1) i))))
(define-compiler-syntax match-vector-set!
(syntax-rules ()
((_ m i x) (##sys#setslot (##sys#slot m 1) i x))))
(declare (unused irregex-match-start-chunk-set!))
(define-compiler-syntax irregex-match-start-chunk-set!
(syntax-rules ()
((_ m n start)
(vector-set! (##sys#slot m 1) (* n 4) start))))
(declare (unused irregex-match-start-index-set!))
(define-compiler-syntax irregex-match-start-index-set!
(syntax-rules ()
((_ m n start)
(vector-set! (##sys#slot m 1) (+ 1 (* n 4)) start))))
(declare (unused irregex-match-end-chunk-set!))
(define-compiler-syntax irregex-match-end-chunk-set!
(syntax-rules ()
((_ m n end)
(vector-set! (##sys#slot m 1) (+ 2 (* n 4)) end))))
(declare (unused irregex-match-end-index-set!))
(define-compiler-syntax irregex-match-end-index-set!
(syntax-rules ()
((_ m n end)
(vector-set! (##sys#slot m 1) (+ 3 (* n 4)) end))))
(declare (unused irregex-match-chunk&index-from-tag-set!))
(define-compiler-syntax irregex-match-chunk&index-from-tag-set!
(syntax-rules ()
((_ m t chunk index)
(begin
(vector-set! (##sys#slot m 1) (+ 4 (* t 2)) chunk)
(vector-set! (##sys#slot m 1) (+ 5 (* t 2)) index)))))
(include "irregex-core.scm")
(include "irregex-utils.scm")
(define glob->sre
(let ((list->string list->string)
(string->list string->list))
(lambda (s)
(##sys#check-string s 'glob->sre)
(cons
':
(let loop ((cs (string->list s)) (dir #t))
(if (null? cs)
'()
(let ((c (car cs))
(rest (cdr cs)) )
(cond ((char=? c #\*)
(if dir
`((or (: (~ ("./\\"))
(* (~ ("/\\"))))
(* (~ ("./\\"))))
,@(loop rest #f))
`((* (~ ("/\\"))) ,@(loop rest #f))))
((char=? c #\?) (cons 'any (loop rest #f)))
((char=? c #\[)
(let loop2 ((rest rest) (s '()))
(cond ((not (pair? rest))
(error 'glob->sre
"unexpected end of character class" s))
((char=? #\] (car rest))
`(,(if (> (length s) 1)
`(or ,@s)
(car s))
,@(loop (cdr rest) #f)))
((and (pair? (cdr rest))
(pair? (cddr rest))
(char=? #\- (cadr rest)) )
(loop2 (cdddr rest)
(cons `(/ ,(car rest) ,(caddr rest)) s)))
((and (pair? (cdr rest))
(char=? #\- (car rest)))
(loop2 (cddr rest)
(cons `(~ ,(cadr rest)) s)))
(else
(loop2 (cdr rest) (cons (car rest) s))))))
(else (cons c (loop rest (memq c '(#\\ #\/)))))))))))))
)
|
