Email regex optimization

regexes.go

@@ -18,7 +18,7 @@ const (
 	rgbaRegexString                  = "^rgba\\(\\s*(?:(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])|(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%)\\s*,\\s*(?:(?:0.[1-9]*)|[01])\\s*\\)$"
 	hslRegexString                   = "^hsl\\(\\s*(?:0|[1-9]\\d?|[12]\\d\\d|3[0-5]\\d|360)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*\\)$"
 	hslaRegexString                  = "^hsla\\(\\s*(?:0|[1-9]\\d?|[12]\\d\\d|3[0-5]\\d|360)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0.[1-9]*)|[01])\\s*\\)$"
-	emailRegexString                 = "^(?:(?:(?:(?:[a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(?:\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|(?:(?:\\x22)(?:(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(?:\\x20|\\x09)+)?(?:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(\\x20|\\x09)+)?(?:\\x22))))@(?:(?:(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(?:(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.?$"
+	emailRegexString                 = `^(?:"(?:[^"]|\\")*"|[\p{L}\p{N}\p{M}._%+-]+)@[\p{L}\p{N}\p{M}.-]+\.[\p{L}\p{M}]{2,}$`
 	e164RegexString                  = "^\\+[1-9]?[0-9]{7,14}$"
 	base32RegexString                = "^(?:[A-Z2-7]{8})*(?:[A-Z2-7]{2}={6}|[A-Z2-7]{4}={4}|[A-Z2-7]{5}={3}|[A-Z2-7]{7}=|[A-Z2-7]{8})$"
 	base64RegexString                = "^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=|[A-Za-z0-9+\\/]{4})$"

validator_test.go

@@ -8762,6 +8762,91 @@ func TestEmail(t *testing.T) {
 	AssertError(t, errs, "", "", "", "", "email")
 }
 
+func BenchmarkEmailValidation(b *testing.B) {
+	validate := New()
+
+	// Valid email test cases
+	validEmails := []string{
+		"test@mail.com",
+		"Dörte@Sörensen.example.com",
+		"θσερ@εχαμπλε.ψομ",
+		"юзер@екзампл.ком",
+		"उपयोगकर्ता@उदाहरण.कॉम",
+		"用户@例子.广告",
+		`"test test"@email.com`,
+	}
+
+	// Invalid email test cases
+	invalidEmails := []string{
+		"mail@domain_with_underscores.org",
+		"",
+		"test@email",
+		"test@email.",
+		"@email.com",
+		`"@email.com`,
+	}
+
+	// Define sub-benchmarks
+	b.Run("Valid_Emails", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			for _, email := range validEmails {
+				_ = validate.Var(email, "email")
+			}
+		}
+	})
+
+	b.Run("Invalid_Emails", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			for _, email := range invalidEmails {
+				_ = validate.Var(email, "email")
+			}
+		}
+	})
+
+	b.Run("Mixed_Types", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			_ = validate.Var(true, "email")            // Test with boolean
+			_ = validate.Var("test@mail.com", "email") // Test with string
+		}
+	})
+
+	// Benchmark individual cases
+	for _, email := range validEmails {
+		b.Run("Valid_"+email, func(b *testing.B) {
+			for i := 0; i < b.N; i++ {
+				_ = validate.Var(email, "email")
+			}
+		})
+	}
+
+	for _, email := range invalidEmails {
+		name := email
+		if name == "" {
+			name = "Empty"
+		}
+		b.Run("Invalid_"+name, func(b *testing.B) {
+			for i := 0; i < b.N; i++ {
+				_ = validate.Var(email, "email")
+			}
+		})
+	}
+
+	// Benchmark single instance vs new validator
+	b.Run("Single_Validator", func(b *testing.B) {
+		v := New()
+		for i := 0; i < b.N; i++ {
+			_ = v.Var("test@mail.com", "email")
+		}
+	})
+
+	b.Run("New_Validator_Each_Time", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			v := New()
+			_ = v.Var("test@mail.com", "email")
+		}
+	})
+}
+
 func TestHexColor(t *testing.T) {
 	validate := New()
 
@@ -12080,7 +12165,7 @@ func TestExcludedIf(t *testing.T) {
 
 	test11 := struct {
 		Field1 bool
-  		Field2 *string `validate:"excluded_if=Field1 false"`
+		Field2 *string `validate:"excluded_if=Field1 false"`
 	}{
 		Field1: false,
 		Field2: nil,