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https://github.com/janet-lang/janet
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9dc7e8ed3a
When peg/replace or peg/replace-all are given a function to serve as the text replacement, any captures produced by the PEG are passed as additional arguments to that function.
385 lines
14 KiB
Plaintext
385 lines
14 KiB
Plaintext
# Copyright (c) 2023 Calvin Rose & contributors
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to
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# deal in the Software without restriction, including without limitation the
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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# sell copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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(import ./helper :prefix "" :exit true)
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(start-suite 8)
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###
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### Compiling brainfuck to Janet.
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###
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(def- bf-peg
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"Peg for compiling brainfuck into a Janet source ast."
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(peg/compile
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~{:+ (/ '(some "+") ,(fn [x] ~(+= (DATA POS) ,(length x))))
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:- (/ '(some "-") ,(fn [x] ~(-= (DATA POS) ,(length x))))
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:> (/ '(some ">") ,(fn [x] ~(+= POS ,(length x))))
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:< (/ '(some "<") ,(fn [x] ~(-= POS ,(length x))))
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:. (* "." (constant (prinf "%c" (get DATA POS))))
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:loop (/ (* "[" :main "]") ,(fn [& captures]
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~(while (not= (get DATA POS) 0)
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,;captures)))
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:main (any (+ :s :loop :+ :- :> :< :.))}))
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(defn bf
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"Run brainfuck."
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[text]
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(eval
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~(let [DATA (array/new-filled 100 0)]
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(var POS 50)
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,;(peg/match bf-peg text))))
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(defn test-bf
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"Test some bf for expected output."
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[input output]
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(def b @"")
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(with-dyns [:out b]
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(bf input))
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(assert (= (string output) (string b))
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(string "bf input '"
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input
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"' failed, expected "
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(describe output)
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", got "
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(describe (string b))
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".")))
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(test-bf "++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++." "Hello World!\n")
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(test-bf ">++++++++[-<+++++++++>]<.>>+>-[+]++>++>+++[>[->+++<<+++>]<<]>-----.>->
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+++..+++.>-.<<+[>[+>+]>>]<--------------.>>.+++.------.--------.>+.>+."
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"Hello World!\n")
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(test-bf "+[+[<<<+>>>>]+<-<-<<<+<++]<<.<++.<++..+++.<<++.<---.>>.>.+++.------.>-.>>--."
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"Hello, World!")
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# Prompts and Labels
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(assert (= 10 (label a (for i 0 10 (if (= i 5) (return a 10))))) "label 1")
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(defn recur
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[lab x y]
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(when (= x y) (return lab :done))
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(def res (label newlab (recur (or lab newlab) (+ x 1) y)))
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(if lab :oops res))
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(assert (= :done (recur nil 0 10)) "label 2")
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(assert (= 10 (prompt :a (for i 0 10 (if (= i 5) (return :a 10))))) "prompt 1")
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(defn- inner-loop
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[i]
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(if (= i 5)
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(return :a 10)))
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(assert (= 10 (prompt :a (for i 0 10 (inner-loop i)))) "prompt 2")
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(defn- inner-loop2
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[i]
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(try
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(if (= i 5)
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(error 10))
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([err] (return :a err))))
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(assert (= 10 (prompt :a (for i 0 10 (inner-loop2 i)))) "prompt 3")
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# Match checks
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(assert (= :hi (match nil nil :hi)) "match 1")
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(assert (= :hi (match {:a :hi} {:a a} a)) "match 2")
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(assert (= nil (match {:a :hi} {:a a :b b} a)) "match 3")
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(assert (= nil (match [1 2] [a b c] a)) "match 4")
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(assert (= 2 (match [1 2] [a b] b)) "match 5")
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(assert (= [2 :a :b] (match [1 2 :a :b] [o & rest] rest)) "match 6")
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(assert (= [] (match @[:a] @[x & r] r :fallback)) "match 7")
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(assert (= :fallback (match @[1] @[x y & r] r :fallback)) "match 8")
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(assert (= [1 2 3 4] (match @[1 2 3 4] @[x y z & r] [x y z ;r] :fallback)) "match 9")
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# And/or checks
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(assert (= false (and false false)) "and 1")
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(assert (= false (or false false)) "or 1")
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# #300 Regression test
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# Just don't segfault
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(assert (peg/match '{:main (replace "S" {"S" :spade})} "S7") "regression #300")
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# Test cases for #293
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(assert (= :yes (match [1 2 3] [_ a _] :yes :no)) "match wildcard 1")
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(assert (= :no (match [1 2 3] [__ a __] :yes :no)) "match wildcard 2")
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(assert (= :yes (match [1 2 [1 2 3]] [_ a [_ _ _]] :yes :no)) "match wildcard 3")
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(assert (= :yes (match [1 2 3] (_ (even? 2)) :yes :no)) "match wildcard 4")
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(assert (= :yes (match {:a 1} {:a _} :yes :no)) "match wildcard 5")
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(assert (= false (match {:a 1 :b 2 :c 3} {:a a :b _ :c _ :d _} :no {:a _ :b _ :c _} false :no)) "match wildcard 6")
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(assert (= nil (match {:a 1 :b 2 :c 3} {:a a :b _ :c _ :d _} :no {:a _ :b _ :c _} nil :no)) "match wildcard 7")
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(assert (= "t" (match [true nil] [true _] "t")) "match wildcard 8")
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# Regression #301
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(def b (buffer/new-filled 128 0x78))
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(assert (= 38 (length (buffer/blit @"" b -1 90))) "buffer/blit 1")
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(def a @"abcdefghijklm")
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(assert (deep= @"abcde" (buffer/blit @"" a -1 0 5)) "buffer/blit 2")
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(assert (deep= @"bcde" (buffer/blit @"" a -1 1 5)) "buffer/blit 3")
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(assert (deep= @"cde" (buffer/blit @"" a -1 2 5)) "buffer/blit 4")
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(assert (deep= @"de" (buffer/blit @"" a -1 3 5)) "buffer/blit 5")
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# chr
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(assert (= (chr "a") 97) "chr 1")
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# Detaching closure over non resumable fiber.
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(do
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(defn f1
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[a]
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(defn f1 [] (++ (a 0)))
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(defn f2 [] (++ (a 0)))
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(error [f1 f2]))
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(def [_ [f1 f2]] (protect (f1 @[0])))
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# At time of writing, mark phase can detach closure envs.
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(gccollect)
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(assert (= 1 (f1)) "detach-non-resumable-closure 1")
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(assert (= 2 (f2)) "detach-non-resumable-closure 2"))
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# Marshal closure over non resumable fiber.
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(do
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(defn f1
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[a]
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(defn f1 [] (++ (a 0)))
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(defn f2 [] (++ (a 0)))
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(error [f1 f2]))
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(def [_ tup] (protect (f1 @[0])))
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(def [f1 f2] (unmarshal (marshal tup make-image-dict) load-image-dict))
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(assert (= 1 (f1)) "marshal-non-resumable-closure 1")
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(assert (= 2 (f2)) "marshal-non-resumable-closure 2"))
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# Marshal closure over currently alive fiber.
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(do
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(defn f1
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[a]
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(defn f1 [] (++ (a 0)))
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(defn f2 [] (++ (a 0)))
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(marshal [f1 f2] make-image-dict))
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(def [f1 f2] (unmarshal (f1 @[0]) load-image-dict))
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(assert (= 1 (f1)) "marshal-live-closure 1")
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(assert (= 2 (f2)) "marshal-live-closure 2"))
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(do
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(var a 1)
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(defn b [x] (+ a x))
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(def c (unmarshal (marshal b)))
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(assert (= 2 (c 1)) "marshal-on-stack-closure 1"))
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# Reduce2
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(assert (= (reduce + 0 (range 1 10)) (reduce2 + (range 10))) "reduce2 1")
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(assert (= (reduce * 1 (range 2 10)) (reduce2 * (range 1 10))) "reduce2 2")
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(assert (= nil (reduce2 * [])) "reduce2 3")
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# Accumulate
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(assert (deep= (accumulate + 0 (range 5)) @[0 1 3 6 10]) "accumulate 1")
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(assert (deep= (accumulate2 + (range 5)) @[0 1 3 6 10]) "accumulate2 1")
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(assert (deep= @[] (accumulate2 + [])) "accumulate2 2")
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(assert (deep= @[] (accumulate 0 + [])) "accumulate 2")
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# Perm strings
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(assert (= (os/perm-int "rwxrwxrwx") 8r777) "perm 1")
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(assert (= (os/perm-int "rwxr-xr-x") 8r755) "perm 2")
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(assert (= (os/perm-int "rw-r--r--") 8r644) "perm 3")
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(assert (= (band (os/perm-int "rwxrwxrwx") 8r077) 8r077) "perm 4")
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(assert (= (band (os/perm-int "rwxr-xr-x") 8r077) 8r055) "perm 5")
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(assert (= (band (os/perm-int "rw-r--r--") 8r077) 8r044) "perm 6")
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(assert (= (os/perm-string 8r777) "rwxrwxrwx") "perm 7")
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(assert (= (os/perm-string 8r755) "rwxr-xr-x") "perm 8")
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(assert (= (os/perm-string 8r644) "rw-r--r--") "perm 9")
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# Issue #336 cases - don't segfault
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(assert-error "unmarshal errors 1" (unmarshal @"\xd6\xb9\xb9"))
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(assert-error "unmarshal errors 2" (unmarshal @"\xd7bc"))
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(assert-error "unmarshal errors 3" (unmarshal "\xd3\x01\xd9\x01\x62\xcf\x03\x78\x79\x7a" load-image-dict))
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(assert-error "unmarshal errors 4"
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(unmarshal
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@"\xD7\xCD\0e/p\x98\0\0\x03\x01\x01\x01\x02\0\0\x04\0\xCEe/p../tools
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\0\0\0/afl\0\0\x01\0erate\xDE\xDE\xDE\xDE\xDE\xDE\xDE\xDE\xDE\xDE
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\xA8\xDE\xDE\xDE\xDE\xDE\xDE\0\0\0\xDE\xDE_unmarshal_testcase3.ja
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neldb\0\0\0\xD8\x05printG\x01\0\xDE\xDE\xDE'\x03\0marshal_tes/\x02
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\0\0\0\0\0*\xFE\x01\04\x02\0\0'\x03\0\r\0\r\0\r\0\r" load-image-dict))
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(gccollect)
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# in vs get regression
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(assert (nil? (first @"")) "in vs get 1")
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(assert (nil? (last @"")) "in vs get 1")
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# For undefined behavior sanitizer
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0xf&1fffFFFF
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# Tuple comparison
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(assert (< [1 2 3] [2 2 3]) "tuple comparison 1")
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(assert (< [1 2 3] [2 2]) "tuple comparison 2")
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(assert (< [1 2 3] [2 2 3 4]) "tuple comparison 3")
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(assert (< [1 2 3] [1 2 3 4]) "tuple comparison 4")
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(assert (< [1 2 3] [1 2 3 -1]) "tuple comparison 5")
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(assert (> [1 2 3] [1 2]) "tuple comparison 6")
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# Lenprefix rule
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(def peg (peg/compile ~(* (lenprefix (/ (* '(any (if-not ":" 1)) ":") ,scan-number) 1) -1)))
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(assert (peg/match peg "5:abcde") "lenprefix 1")
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(assert (not (peg/match peg "5:abcdef")) "lenprefix 2")
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(assert (not (peg/match peg "5:abcd")) "lenprefix 3")
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# Packet capture
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(def peg2
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(peg/compile
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~{# capture packet length in tag :header-len
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:packet-header (* (/ ':d+ ,scan-number :header-len) ":")
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# capture n bytes from a backref :header-len
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:packet-body '(lenprefix (-> :header-len) 1)
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# header, followed by body, and drop the :header-len capture
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:packet (/ (* :packet-header :packet-body) ,|$1)
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# any exact seqence of packets (no extra characters)
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:main (* (any :packet) -1)}))
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(assert (deep= @["a" "bb" "ccc"] (peg/match peg2 "1:a2:bb3:ccc")) "lenprefix 4")
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(assert (deep= @["a" "bb" "cccccc"] (peg/match peg2 "1:a2:bb6:cccccc")) "lenprefix 5")
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(assert (= nil (peg/match peg2 "1:a2:bb:5:cccccc")) "lenprefix 6")
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(assert (= nil (peg/match peg2 "1:a2:bb:7:cccccc")) "lenprefix 7")
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# Regression #400
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(assert (= nil (while (and false false) (fn []) (error "should not happen"))) "strangeloop 1")
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(assert (= nil (while (not= nil nil) (fn []) (error "should not happen"))) "strangeloop 2")
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# Issue #412
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(assert (peg/match '(* "a" (> -1 "a") "b") "abc") "lookhead does not move cursor")
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(def peg3
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~{:main (* "(" (thru ")"))})
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(def peg4 (peg/compile ~(* (thru "(") '(to ")"))))
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(assert (peg/match peg3 "(12345)") "peg thru 1")
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(assert (not (peg/match peg3 " (12345)")) "peg thru 2")
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(assert (not (peg/match peg3 "(12345")) "peg thru 3")
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(assert (= "abc" (0 (peg/match peg4 "123(abc)"))) "peg thru/to 1")
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(assert (= "abc" (0 (peg/match peg4 "(abc)"))) "peg thru/to 2")
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(assert (not (peg/match peg4 "123(abc")) "peg thru/to 3")
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(def peg5 (peg/compile [3 "abc"]))
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(assert (:match peg5 "abcabcabc") "repeat alias 1")
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(assert (:match peg5 "abcabcabcac") "repeat alias 2")
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(assert (not (:match peg5 "abcabc")) "repeat alias 3")
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(defn check-jdn [x]
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(assert (deep= (parse (string/format "%j" x)) x) "round trip jdn"))
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(check-jdn 0)
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(check-jdn nil)
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(check-jdn [])
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(check-jdn @[[] [] 1231 9.123123 -123123 0.1231231230001])
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(check-jdn -0.123123123123)
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(check-jdn 12837192371923)
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(check-jdn "a string")
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(check-jdn @"a buffer")
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# Issue 428
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(var result nil)
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(defn f [] (yield {:a :ok}))
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(assert-no-error "issue 428 1" (loop [{:a x} :in (fiber/new f)] (set result x)))
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(assert (= result :ok) "issue 428 2")
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# Inline 3 argument get
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(assert (= 10 (do (var a 10) (set a (get '{} :a a)))) "inline get 1")
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# Keyword and Symbol slice
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(assert (= :keyword (keyword/slice "some_keyword_slice" 5 12)) "keyword slice")
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(assert (= 'symbol (symbol/slice "some_symbol_slice" 5 11)) "symbol slice")
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# Peg find and find-all
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(def p "/usr/local/bin/janet")
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(assert (= (peg/find '"n/" p) 13) "peg find 1")
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(assert (not (peg/find '"t/" p)) "peg find 2")
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(assert (deep= (peg/find-all '"/" p) @[0 4 10 14]) "peg find-all")
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# Peg replace and replace-all
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(defn check-replacer
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[x y z]
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(assert (= (string/replace x y z) (string (peg/replace x y z))) "replacer test replace")
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(assert (= (string/replace-all x y z) (string (peg/replace-all x y z))) "replacer test replace-all"))
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(check-replacer "abc" "Z" "abcabcabcabasciabsabc")
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(check-replacer "abc" "Z" "")
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(check-replacer "aba" "ZZZZZZ" "ababababababa")
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(check-replacer "aba" "" "ababababababa")
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(check-replacer "aba" string/ascii-upper "ababababababa")
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(check-replacer "aba" 123 "ababababababa")
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(assert (= (string (peg/replace-all ~(set "ab") string/ascii-upper "abcaa"))
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"ABcAA")
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"peg/replace-all cfunction")
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(assert (= (string (peg/replace-all ~(set "ab") |$ "abcaa"))
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"abcaa")
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"peg/replace-all function")
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(defn peg-test [name f peg subst text expected]
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(assert (= (string (f peg subst text)) expected) name))
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(peg-test "peg/replace has access to captures"
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peg/replace
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~(sequence "." (capture (set "ab")))
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(fn [str char] (string/format "%s -> %s, " str (string/ascii-upper char)))
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".a.b.c"
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".a -> A, .b.c")
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(peg-test "peg/replace-all has access to captures"
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peg/replace-all
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~(sequence "." (capture (set "ab")))
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(fn [str char] (string/format "%s -> %s, " str (string/ascii-upper char)))
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".a.b.c"
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".a -> A, .b -> B, .c")
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# Peg bug
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(assert (deep= @[] (peg/match '(any 1) @"")) "peg empty pattern 1")
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(assert (deep= @[] (peg/match '(any 1) (buffer))) "peg empty pattern 2")
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(assert (deep= @[] (peg/match '(any 1) "")) "peg empty pattern 3")
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(assert (deep= @[] (peg/match '(any 1) (string))) "peg empty pattern 4")
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(assert (deep= @[] (peg/match '(* "test" (any 1)) @"test")) "peg empty pattern 5")
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(assert (deep= @[] (peg/match '(* "test" (any 1)) (buffer "test"))) "peg empty pattern 6")
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# number pattern
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(assert (deep= @[111] (peg/match '(number :d+) "111")) "simple number capture 1")
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(assert (deep= @[255] (peg/match '(number :w+) "0xff")) "simple number capture 2")
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# quoted match test
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(assert (= :yes (match 'john 'john :yes _ :nope)) "quoted literal match 1")
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(assert (= :nope (match 'john ''john :yes _ :nope)) "quoted literal match 2")
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(end-suite)
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