mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-02 18:53:22 +00:00
657 lines
18 KiB
Go
657 lines
18 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package regexp
|
|
|
|
import (
|
|
"reflect"
|
|
"regexp/syntax"
|
|
"strings"
|
|
"testing"
|
|
)
|
|
|
|
var good_re = []string{
|
|
``,
|
|
`.`,
|
|
`^.$`,
|
|
`a`,
|
|
`a*`,
|
|
`a+`,
|
|
`a?`,
|
|
`a|b`,
|
|
`a*|b*`,
|
|
`(a*|b)(c*|d)`,
|
|
`[a-z]`,
|
|
`[a-abc-c\-\]\[]`,
|
|
`[a-z]+`,
|
|
`[abc]`,
|
|
`[^1234]`,
|
|
`[^\n]`,
|
|
`\!\\`,
|
|
}
|
|
|
|
type stringError struct {
|
|
re string
|
|
err string
|
|
}
|
|
|
|
var bad_re = []stringError{
|
|
{`*`, "missing argument to repetition operator: `*`"},
|
|
{`+`, "missing argument to repetition operator: `+`"},
|
|
{`?`, "missing argument to repetition operator: `?`"},
|
|
{`(abc`, "missing closing ): `(abc`"},
|
|
{`abc)`, "unexpected ): `abc)`"},
|
|
{`x[a-z`, "missing closing ]: `[a-z`"},
|
|
{`[z-a]`, "invalid character class range: `z-a`"},
|
|
{`abc\`, "trailing backslash at end of expression"},
|
|
{`a**`, "invalid nested repetition operator: `**`"},
|
|
{`a*+`, "invalid nested repetition operator: `*+`"},
|
|
{`\x`, "invalid escape sequence: `\\x`"},
|
|
}
|
|
|
|
func compileTest(t *testing.T, expr string, error string) *Regexp {
|
|
re, err := Compile(expr)
|
|
if error == "" && err != nil {
|
|
t.Error("compiling `", expr, "`; unexpected error: ", err.Error())
|
|
}
|
|
if error != "" && err == nil {
|
|
t.Error("compiling `", expr, "`; missing error")
|
|
} else if error != "" && !strings.Contains(err.Error(), error) {
|
|
t.Error("compiling `", expr, "`; wrong error: ", err.Error(), "; want ", error)
|
|
}
|
|
return re
|
|
}
|
|
|
|
func TestGoodCompile(t *testing.T) {
|
|
for i := 0; i < len(good_re); i++ {
|
|
compileTest(t, good_re[i], "")
|
|
}
|
|
}
|
|
|
|
func TestBadCompile(t *testing.T) {
|
|
for i := 0; i < len(bad_re); i++ {
|
|
compileTest(t, bad_re[i].re, bad_re[i].err)
|
|
}
|
|
}
|
|
|
|
func matchTest(t *testing.T, test *FindTest) {
|
|
re := compileTest(t, test.pat, "")
|
|
if re == nil {
|
|
return
|
|
}
|
|
m := re.MatchString(test.text)
|
|
if m != (len(test.matches) > 0) {
|
|
t.Errorf("MatchString failure on %s: %t should be %t", test, m, len(test.matches) > 0)
|
|
}
|
|
// now try bytes
|
|
m = re.Match([]byte(test.text))
|
|
if m != (len(test.matches) > 0) {
|
|
t.Errorf("Match failure on %s: %t should be %t", test, m, len(test.matches) > 0)
|
|
}
|
|
}
|
|
|
|
func TestMatch(t *testing.T) {
|
|
for _, test := range findTests {
|
|
matchTest(t, &test)
|
|
}
|
|
}
|
|
|
|
func matchFunctionTest(t *testing.T, test *FindTest) {
|
|
m, err := MatchString(test.pat, test.text)
|
|
if err == nil {
|
|
return
|
|
}
|
|
if m != (len(test.matches) > 0) {
|
|
t.Errorf("Match failure on %s: %t should be %t", test, m, len(test.matches) > 0)
|
|
}
|
|
}
|
|
|
|
func TestMatchFunction(t *testing.T) {
|
|
for _, test := range findTests {
|
|
matchFunctionTest(t, &test)
|
|
}
|
|
}
|
|
|
|
type ReplaceTest struct {
|
|
pattern, replacement, input, output string
|
|
}
|
|
|
|
var replaceTests = []ReplaceTest{
|
|
// Test empty input and/or replacement, with pattern that matches the empty string.
|
|
{"", "", "", ""},
|
|
{"", "x", "", "x"},
|
|
{"", "", "abc", "abc"},
|
|
{"", "x", "abc", "xaxbxcx"},
|
|
|
|
// Test empty input and/or replacement, with pattern that does not match the empty string.
|
|
{"b", "", "", ""},
|
|
{"b", "x", "", ""},
|
|
{"b", "", "abc", "ac"},
|
|
{"b", "x", "abc", "axc"},
|
|
{"y", "", "", ""},
|
|
{"y", "x", "", ""},
|
|
{"y", "", "abc", "abc"},
|
|
{"y", "x", "abc", "abc"},
|
|
|
|
// Multibyte characters -- verify that we don't try to match in the middle
|
|
// of a character.
|
|
{"[a-c]*", "x", "\u65e5", "x\u65e5x"},
|
|
{"[^\u65e5]", "x", "abc\u65e5def", "xxx\u65e5xxx"},
|
|
|
|
// Start and end of a string.
|
|
{"^[a-c]*", "x", "abcdabc", "xdabc"},
|
|
{"[a-c]*$", "x", "abcdabc", "abcdx"},
|
|
{"^[a-c]*$", "x", "abcdabc", "abcdabc"},
|
|
{"^[a-c]*", "x", "abc", "x"},
|
|
{"[a-c]*$", "x", "abc", "x"},
|
|
{"^[a-c]*$", "x", "abc", "x"},
|
|
{"^[a-c]*", "x", "dabce", "xdabce"},
|
|
{"[a-c]*$", "x", "dabce", "dabcex"},
|
|
{"^[a-c]*$", "x", "dabce", "dabce"},
|
|
{"^[a-c]*", "x", "", "x"},
|
|
{"[a-c]*$", "x", "", "x"},
|
|
{"^[a-c]*$", "x", "", "x"},
|
|
|
|
{"^[a-c]+", "x", "abcdabc", "xdabc"},
|
|
{"[a-c]+$", "x", "abcdabc", "abcdx"},
|
|
{"^[a-c]+$", "x", "abcdabc", "abcdabc"},
|
|
{"^[a-c]+", "x", "abc", "x"},
|
|
{"[a-c]+$", "x", "abc", "x"},
|
|
{"^[a-c]+$", "x", "abc", "x"},
|
|
{"^[a-c]+", "x", "dabce", "dabce"},
|
|
{"[a-c]+$", "x", "dabce", "dabce"},
|
|
{"^[a-c]+$", "x", "dabce", "dabce"},
|
|
{"^[a-c]+", "x", "", ""},
|
|
{"[a-c]+$", "x", "", ""},
|
|
{"^[a-c]+$", "x", "", ""},
|
|
|
|
// Other cases.
|
|
{"abc", "def", "abcdefg", "defdefg"},
|
|
{"bc", "BC", "abcbcdcdedef", "aBCBCdcdedef"},
|
|
{"abc", "", "abcdabc", "d"},
|
|
{"x", "xXx", "xxxXxxx", "xXxxXxxXxXxXxxXxxXx"},
|
|
{"abc", "d", "", ""},
|
|
{"abc", "d", "abc", "d"},
|
|
{".+", "x", "abc", "x"},
|
|
{"[a-c]*", "x", "def", "xdxexfx"},
|
|
{"[a-c]+", "x", "abcbcdcdedef", "xdxdedef"},
|
|
{"[a-c]*", "x", "abcbcdcdedef", "xdxdxexdxexfx"},
|
|
|
|
// Substitutions
|
|
{"a+", "($0)", "banana", "b(a)n(a)n(a)"},
|
|
{"a+", "(${0})", "banana", "b(a)n(a)n(a)"},
|
|
{"a+", "(${0})$0", "banana", "b(a)an(a)an(a)a"},
|
|
{"a+", "(${0})$0", "banana", "b(a)an(a)an(a)a"},
|
|
{"hello, (.+)", "goodbye, ${1}", "hello, world", "goodbye, world"},
|
|
{"hello, (.+)", "goodbye, $1x", "hello, world", "goodbye, "},
|
|
{"hello, (.+)", "goodbye, ${1}x", "hello, world", "goodbye, worldx"},
|
|
{"hello, (.+)", "<$0><$1><$2><$3>", "hello, world", "<hello, world><world><><>"},
|
|
{"hello, (?P<noun>.+)", "goodbye, $noun!", "hello, world", "goodbye, world!"},
|
|
{"hello, (?P<noun>.+)", "goodbye, ${noun}", "hello, world", "goodbye, world"},
|
|
{"(?P<x>hi)|(?P<x>bye)", "$x$x$x", "hi", "hihihi"},
|
|
{"(?P<x>hi)|(?P<x>bye)", "$x$x$x", "bye", "byebyebye"},
|
|
{"(?P<x>hi)|(?P<x>bye)", "$xyz", "hi", ""},
|
|
{"(?P<x>hi)|(?P<x>bye)", "${x}yz", "hi", "hiyz"},
|
|
{"(?P<x>hi)|(?P<x>bye)", "hello $$x", "hi", "hello $x"},
|
|
{"a+", "${oops", "aaa", "${oops"},
|
|
{"a+", "$$", "aaa", "$"},
|
|
{"a+", "$", "aaa", "$"},
|
|
|
|
// Substitution when subexpression isn't found
|
|
{"(x)?", "$1", "123", "123"},
|
|
{"abc", "$1", "123", "123"},
|
|
}
|
|
|
|
var replaceLiteralTests = []ReplaceTest{
|
|
// Substitutions
|
|
{"a+", "($0)", "banana", "b($0)n($0)n($0)"},
|
|
{"a+", "(${0})", "banana", "b(${0})n(${0})n(${0})"},
|
|
{"a+", "(${0})$0", "banana", "b(${0})$0n(${0})$0n(${0})$0"},
|
|
{"a+", "(${0})$0", "banana", "b(${0})$0n(${0})$0n(${0})$0"},
|
|
{"hello, (.+)", "goodbye, ${1}", "hello, world", "goodbye, ${1}"},
|
|
{"hello, (?P<noun>.+)", "goodbye, $noun!", "hello, world", "goodbye, $noun!"},
|
|
{"hello, (?P<noun>.+)", "goodbye, ${noun}", "hello, world", "goodbye, ${noun}"},
|
|
{"(?P<x>hi)|(?P<x>bye)", "$x$x$x", "hi", "$x$x$x"},
|
|
{"(?P<x>hi)|(?P<x>bye)", "$x$x$x", "bye", "$x$x$x"},
|
|
{"(?P<x>hi)|(?P<x>bye)", "$xyz", "hi", "$xyz"},
|
|
{"(?P<x>hi)|(?P<x>bye)", "${x}yz", "hi", "${x}yz"},
|
|
{"(?P<x>hi)|(?P<x>bye)", "hello $$x", "hi", "hello $$x"},
|
|
{"a+", "${oops", "aaa", "${oops"},
|
|
{"a+", "$$", "aaa", "$$"},
|
|
{"a+", "$", "aaa", "$"},
|
|
}
|
|
|
|
type ReplaceFuncTest struct {
|
|
pattern string
|
|
replacement func(string) string
|
|
input, output string
|
|
}
|
|
|
|
var replaceFuncTests = []ReplaceFuncTest{
|
|
{"[a-c]", func(s string) string { return "x" + s + "y" }, "defabcdef", "defxayxbyxcydef"},
|
|
{"[a-c]+", func(s string) string { return "x" + s + "y" }, "defabcdef", "defxabcydef"},
|
|
{"[a-c]*", func(s string) string { return "x" + s + "y" }, "defabcdef", "xydxyexyfxabcydxyexyfxy"},
|
|
}
|
|
|
|
func TestReplaceAll(t *testing.T) {
|
|
for _, tc := range replaceTests {
|
|
re, err := Compile(tc.pattern)
|
|
if err != nil {
|
|
t.Errorf("Unexpected error compiling %q: %v", tc.pattern, err)
|
|
continue
|
|
}
|
|
actual := re.ReplaceAllString(tc.input, tc.replacement)
|
|
if actual != tc.output {
|
|
t.Errorf("%q.ReplaceAllString(%q,%q) = %q; want %q",
|
|
tc.pattern, tc.input, tc.replacement, actual, tc.output)
|
|
}
|
|
// now try bytes
|
|
actual = string(re.ReplaceAll([]byte(tc.input), []byte(tc.replacement)))
|
|
if actual != tc.output {
|
|
t.Errorf("%q.ReplaceAll(%q,%q) = %q; want %q",
|
|
tc.pattern, tc.input, tc.replacement, actual, tc.output)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReplaceAllLiteral(t *testing.T) {
|
|
// Run ReplaceAll tests that do not have $ expansions.
|
|
for _, tc := range replaceTests {
|
|
if strings.Contains(tc.replacement, "$") {
|
|
continue
|
|
}
|
|
re, err := Compile(tc.pattern)
|
|
if err != nil {
|
|
t.Errorf("Unexpected error compiling %q: %v", tc.pattern, err)
|
|
continue
|
|
}
|
|
actual := re.ReplaceAllLiteralString(tc.input, tc.replacement)
|
|
if actual != tc.output {
|
|
t.Errorf("%q.ReplaceAllLiteralString(%q,%q) = %q; want %q",
|
|
tc.pattern, tc.input, tc.replacement, actual, tc.output)
|
|
}
|
|
// now try bytes
|
|
actual = string(re.ReplaceAllLiteral([]byte(tc.input), []byte(tc.replacement)))
|
|
if actual != tc.output {
|
|
t.Errorf("%q.ReplaceAllLiteral(%q,%q) = %q; want %q",
|
|
tc.pattern, tc.input, tc.replacement, actual, tc.output)
|
|
}
|
|
}
|
|
|
|
// Run literal-specific tests.
|
|
for _, tc := range replaceLiteralTests {
|
|
re, err := Compile(tc.pattern)
|
|
if err != nil {
|
|
t.Errorf("Unexpected error compiling %q: %v", tc.pattern, err)
|
|
continue
|
|
}
|
|
actual := re.ReplaceAllLiteralString(tc.input, tc.replacement)
|
|
if actual != tc.output {
|
|
t.Errorf("%q.ReplaceAllLiteralString(%q,%q) = %q; want %q",
|
|
tc.pattern, tc.input, tc.replacement, actual, tc.output)
|
|
}
|
|
// now try bytes
|
|
actual = string(re.ReplaceAllLiteral([]byte(tc.input), []byte(tc.replacement)))
|
|
if actual != tc.output {
|
|
t.Errorf("%q.ReplaceAllLiteral(%q,%q) = %q; want %q",
|
|
tc.pattern, tc.input, tc.replacement, actual, tc.output)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReplaceAllFunc(t *testing.T) {
|
|
for _, tc := range replaceFuncTests {
|
|
re, err := Compile(tc.pattern)
|
|
if err != nil {
|
|
t.Errorf("Unexpected error compiling %q: %v", tc.pattern, err)
|
|
continue
|
|
}
|
|
actual := re.ReplaceAllStringFunc(tc.input, tc.replacement)
|
|
if actual != tc.output {
|
|
t.Errorf("%q.ReplaceFunc(%q,fn) = %q; want %q",
|
|
tc.pattern, tc.input, actual, tc.output)
|
|
}
|
|
// now try bytes
|
|
actual = string(re.ReplaceAllFunc([]byte(tc.input), func(s []byte) []byte { return []byte(tc.replacement(string(s))) }))
|
|
if actual != tc.output {
|
|
t.Errorf("%q.ReplaceFunc(%q,fn) = %q; want %q",
|
|
tc.pattern, tc.input, actual, tc.output)
|
|
}
|
|
}
|
|
}
|
|
|
|
type MetaTest struct {
|
|
pattern, output, literal string
|
|
isLiteral bool
|
|
}
|
|
|
|
var metaTests = []MetaTest{
|
|
{``, ``, ``, true},
|
|
{`foo`, `foo`, `foo`, true},
|
|
{`foo\.\$`, `foo\\\.\\\$`, `foo.$`, true}, // has meta but no operator
|
|
{`foo.\$`, `foo\.\\\$`, `foo`, false}, // has escaped operators and real operators
|
|
{`!@#$%^&*()_+-=[{]}\|,<.>/?~`, `!@#\$%\^&\*\(\)_\+-=\[\{\]\}\\\|,<\.>/\?~`, `!@#`, false},
|
|
}
|
|
|
|
func TestQuoteMeta(t *testing.T) {
|
|
for _, tc := range metaTests {
|
|
// Verify that QuoteMeta returns the expected string.
|
|
quoted := QuoteMeta(tc.pattern)
|
|
if quoted != tc.output {
|
|
t.Errorf("QuoteMeta(`%s`) = `%s`; want `%s`",
|
|
tc.pattern, quoted, tc.output)
|
|
continue
|
|
}
|
|
|
|
// Verify that the quoted string is in fact treated as expected
|
|
// by Compile -- i.e. that it matches the original, unquoted string.
|
|
if tc.pattern != "" {
|
|
re, err := Compile(quoted)
|
|
if err != nil {
|
|
t.Errorf("Unexpected error compiling QuoteMeta(`%s`): %v", tc.pattern, err)
|
|
continue
|
|
}
|
|
src := "abc" + tc.pattern + "def"
|
|
repl := "xyz"
|
|
replaced := re.ReplaceAllString(src, repl)
|
|
expected := "abcxyzdef"
|
|
if replaced != expected {
|
|
t.Errorf("QuoteMeta(`%s`).Replace(`%s`,`%s`) = `%s`; want `%s`",
|
|
tc.pattern, src, repl, replaced, expected)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestLiteralPrefix(t *testing.T) {
|
|
for _, tc := range metaTests {
|
|
// Literal method needs to scan the pattern.
|
|
re := MustCompile(tc.pattern)
|
|
str, complete := re.LiteralPrefix()
|
|
if complete != tc.isLiteral {
|
|
t.Errorf("LiteralPrefix(`%s`) = %t; want %t", tc.pattern, complete, tc.isLiteral)
|
|
}
|
|
if str != tc.literal {
|
|
t.Errorf("LiteralPrefix(`%s`) = `%s`; want `%s`", tc.pattern, str, tc.literal)
|
|
}
|
|
}
|
|
}
|
|
|
|
type subexpCase struct {
|
|
input string
|
|
num int
|
|
names []string
|
|
}
|
|
|
|
var subexpCases = []subexpCase{
|
|
{``, 0, nil},
|
|
{`.*`, 0, nil},
|
|
{`abba`, 0, nil},
|
|
{`ab(b)a`, 1, []string{"", ""}},
|
|
{`ab(.*)a`, 1, []string{"", ""}},
|
|
{`(.*)ab(.*)a`, 2, []string{"", "", ""}},
|
|
{`(.*)(ab)(.*)a`, 3, []string{"", "", "", ""}},
|
|
{`(.*)((a)b)(.*)a`, 4, []string{"", "", "", "", ""}},
|
|
{`(.*)(\(ab)(.*)a`, 3, []string{"", "", "", ""}},
|
|
{`(.*)(\(a\)b)(.*)a`, 3, []string{"", "", "", ""}},
|
|
{`(?P<foo>.*)(?P<bar>(a)b)(?P<foo>.*)a`, 4, []string{"", "foo", "bar", "", "foo"}},
|
|
}
|
|
|
|
func TestSubexp(t *testing.T) {
|
|
for _, c := range subexpCases {
|
|
re := MustCompile(c.input)
|
|
n := re.NumSubexp()
|
|
if n != c.num {
|
|
t.Errorf("%q: NumSubexp = %d, want %d", c.input, n, c.num)
|
|
continue
|
|
}
|
|
names := re.SubexpNames()
|
|
if len(names) != 1+n {
|
|
t.Errorf("%q: len(SubexpNames) = %d, want %d", c.input, len(names), n)
|
|
continue
|
|
}
|
|
if c.names != nil {
|
|
for i := 0; i < 1+n; i++ {
|
|
if names[i] != c.names[i] {
|
|
t.Errorf("%q: SubexpNames[%d] = %q, want %q", c.input, i, names[i], c.names[i])
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var splitTests = []struct {
|
|
s string
|
|
r string
|
|
n int
|
|
out []string
|
|
}{
|
|
{"foo:and:bar", ":", -1, []string{"foo", "and", "bar"}},
|
|
{"foo:and:bar", ":", 1, []string{"foo:and:bar"}},
|
|
{"foo:and:bar", ":", 2, []string{"foo", "and:bar"}},
|
|
{"foo:and:bar", "foo", -1, []string{"", ":and:bar"}},
|
|
{"foo:and:bar", "bar", -1, []string{"foo:and:", ""}},
|
|
{"foo:and:bar", "baz", -1, []string{"foo:and:bar"}},
|
|
{"baabaab", "a", -1, []string{"b", "", "b", "", "b"}},
|
|
{"baabaab", "a*", -1, []string{"b", "b", "b"}},
|
|
{"baabaab", "ba*", -1, []string{"", "", "", ""}},
|
|
{"foobar", "f*b*", -1, []string{"", "o", "o", "a", "r"}},
|
|
{"foobar", "f+.*b+", -1, []string{"", "ar"}},
|
|
{"foobooboar", "o{2}", -1, []string{"f", "b", "boar"}},
|
|
{"a,b,c,d,e,f", ",", 3, []string{"a", "b", "c,d,e,f"}},
|
|
{"a,b,c,d,e,f", ",", 0, nil},
|
|
{",", ",", -1, []string{"", ""}},
|
|
{",,,", ",", -1, []string{"", "", "", ""}},
|
|
{"", ",", -1, []string{""}},
|
|
{"", ".*", -1, []string{""}},
|
|
{"", ".+", -1, []string{""}},
|
|
{"", "", -1, []string{}},
|
|
{"foobar", "", -1, []string{"f", "o", "o", "b", "a", "r"}},
|
|
{"abaabaccadaaae", "a*", 5, []string{"", "b", "b", "c", "cadaaae"}},
|
|
{":x:y:z:", ":", -1, []string{"", "x", "y", "z", ""}},
|
|
}
|
|
|
|
func TestSplit(t *testing.T) {
|
|
for i, test := range splitTests {
|
|
re, err := Compile(test.r)
|
|
if err != nil {
|
|
t.Errorf("#%d: %q: compile error: %s", i, test.r, err.Error())
|
|
continue
|
|
}
|
|
|
|
split := re.Split(test.s, test.n)
|
|
if !reflect.DeepEqual(split, test.out) {
|
|
t.Errorf("#%d: %q: got %q; want %q", i, test.r, split, test.out)
|
|
}
|
|
|
|
if QuoteMeta(test.r) == test.r {
|
|
strsplit := strings.SplitN(test.s, test.r, test.n)
|
|
if !reflect.DeepEqual(split, strsplit) {
|
|
t.Errorf("#%d: Split(%q, %q, %d): regexp vs strings mismatch\nregexp=%q\nstrings=%q", i, test.s, test.r, test.n, split, strsplit)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check that one-pass cutoff does trigger.
|
|
func TestOnePassCutoff(t *testing.T) {
|
|
re, err := syntax.Parse(`^x{1,1000}y{1,1000}$`, syntax.Perl)
|
|
if err != nil {
|
|
t.Fatalf("parse: %v", err)
|
|
}
|
|
p, err := syntax.Compile(re.Simplify())
|
|
if err != nil {
|
|
t.Fatalf("compile: %v", err)
|
|
}
|
|
if compileOnePass(p) != notOnePass {
|
|
t.Fatalf("makeOnePass succeeded; wanted notOnePass")
|
|
}
|
|
}
|
|
|
|
func BenchmarkLiteral(b *testing.B) {
|
|
x := strings.Repeat("x", 50) + "y"
|
|
b.StopTimer()
|
|
re := MustCompile("y")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
if !re.MatchString(x) {
|
|
b.Fatalf("no match!")
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkNotLiteral(b *testing.B) {
|
|
x := strings.Repeat("x", 50) + "y"
|
|
b.StopTimer()
|
|
re := MustCompile(".y")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
if !re.MatchString(x) {
|
|
b.Fatalf("no match!")
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkMatchClass(b *testing.B) {
|
|
b.StopTimer()
|
|
x := strings.Repeat("xxxx", 20) + "w"
|
|
re := MustCompile("[abcdw]")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
if !re.MatchString(x) {
|
|
b.Fatalf("no match!")
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkMatchClass_InRange(b *testing.B) {
|
|
b.StopTimer()
|
|
// 'b' is between 'a' and 'c', so the charclass
|
|
// range checking is no help here.
|
|
x := strings.Repeat("bbbb", 20) + "c"
|
|
re := MustCompile("[ac]")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
if !re.MatchString(x) {
|
|
b.Fatalf("no match!")
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkReplaceAll(b *testing.B) {
|
|
x := "abcdefghijklmnopqrstuvwxyz"
|
|
b.StopTimer()
|
|
re := MustCompile("[cjrw]")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.ReplaceAllString(x, "")
|
|
}
|
|
}
|
|
|
|
func BenchmarkAnchoredLiteralShortNonMatch(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcdefghijklmnopqrstuvwxyz")
|
|
re := MustCompile("^zbc(d|e)")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|
|
|
|
func BenchmarkAnchoredLiteralLongNonMatch(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcdefghijklmnopqrstuvwxyz")
|
|
for i := 0; i < 15; i++ {
|
|
x = append(x, x...)
|
|
}
|
|
re := MustCompile("^zbc(d|e)")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|
|
|
|
func BenchmarkAnchoredShortMatch(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcdefghijklmnopqrstuvwxyz")
|
|
re := MustCompile("^.bc(d|e)")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|
|
|
|
func BenchmarkAnchoredLongMatch(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcdefghijklmnopqrstuvwxyz")
|
|
for i := 0; i < 15; i++ {
|
|
x = append(x, x...)
|
|
}
|
|
re := MustCompile("^.bc(d|e)")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|
|
|
|
func BenchmarkOnePassShortA(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcddddddeeeededd")
|
|
re := MustCompile("^.bc(d|e)*$")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|
|
|
|
func BenchmarkNotOnePassShortA(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcddddddeeeededd")
|
|
re := MustCompile(".bc(d|e)*$")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|
|
|
|
func BenchmarkOnePassShortB(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcddddddeeeededd")
|
|
re := MustCompile("^.bc(?:d|e)*$")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|
|
|
|
func BenchmarkNotOnePassShortB(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcddddddeeeededd")
|
|
re := MustCompile(".bc(?:d|e)*$")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|
|
|
|
func BenchmarkOnePassLongPrefix(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcdefghijklmnopqrstuvwxyz")
|
|
re := MustCompile("^abcdefghijklmnopqrstuvwxyz.*$")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|
|
|
|
func BenchmarkOnePassLongNotPrefix(b *testing.B) {
|
|
b.StopTimer()
|
|
x := []byte("abcdefghijklmnopqrstuvwxyz")
|
|
re := MustCompile("^.bcdefghijklmnopqrstuvwxyz.*$")
|
|
b.StartTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
re.Match(x)
|
|
}
|
|
}
|