shithub: mc

ref: 58633cbf5d7bbbf095787b7b01b6ad6b032def3c
dir: /lib/regex/test/subst.myr/

use std

use "testmatch"

const main = {
	var s : byte[:]
	var e : byte[:]
		
	s = std.strjoin([
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
	][:], "")
	e = std.strcat(s[:s.len - 2], "XYZ")
	
	testsub(".*bc", "Abc", [][:], `std.Some "Abc")
	testsub("(a*)*", "a", ["b"][:], `std.Some "b")
	testsub("(aa|aab?)*", s, ["XYZ"][:], `std.Some e)

        /* greedy matches */
	testsub("(<.*>).*", \
		"<a foo> blah <bar>", \
		["some shite"][:], \
		`std.Some "some shite")

        /* reluctant matches */
	testsub("(<.*?>).*", \
		"<a foo> blah <bar>", \
		["<some tag>"][:], \
		`std.Some "<some tag> blah <bar>")

	/* multiple subs */
	testsub("([a-z]*)[^a-z]*([a-z]*)foo", \
		"abc123foofoo", \
		["XYZ", "ABC"][:], \
		`std.Some "XYZ123ABCfoo")

	/* failure */
	testsub("([a-z]*).*([a-z]*)foo", \
		"abc123foobar", \
		["XYZ", "ABC"][:], \
		`std.None)

	/* suball */
	testsuball("([a-z]*)_", \
		"a_1bb_2ccccccc_12d", \
		["---"][:], \
		`std.Some "---_1---_2---_12d")
}