Internal Error Matching Pattern
Resolved Fix version(s): - 1.10.7 (28/Jul/10) Reporter: Feighen Oosterbroek (noondaysun) Assignee: Thomas Weidner (thomas) Tags: - Zend_Validate Related issues: Attachments: Description Have created a form using the following element
$this->addElement("password", "pass_word", array( "label"=>"Password", "required"=>true, "validators"=>array( array("Regex", true, array("[a-zA-Z0-9~!@$%^&*]{5,15}")) ) )); I get the following error rendered in my browser "Internal error while using the pattern '[a-zA-Z0-9~!@$%^&*]{5,15}'" The regular expression matches correctly if I use a java pattern matching tool (Part of jEdit) I have tracked the fault back to Zend/Validate/Regex.php Line 107/** * Sets the pattern option * * @param string $pattern * @throws Zend_Validate_Exception if there is a fatal error in pattern matching * @return Zend_Validate_Regex Provides a fluent interface */ public function setPattern($pattern) { $this->_pattern = (string) $pattern; $status = @preg_match($this->_pattern, "Test"); **** This is line 107 **** if (false === $status) { require_once 'Zend/Validate/Exception.php'; throw new Zend_Validate_Exception("Internal error while using the pattern '$this->_pattern'"); } return $this; } As you can see the subject of preg_match will never pass my regular expression. I know that workarounds exist. I could daisy chain the regex validator with the stringLength validator or I could alter my regex Comments Posted by Hendri Smit (hendri.smit) on 2010-07-22T02:57:05.000+0000 Your regex pattern doesn't have any delimiters so it is invalid. That's why the exception is thrown. The preg_match function will only return false if the pattern is incorrect. It returns 0 if no match was found. This is not a bug. Read http://php.net/manual/en/book.pcre.php for more info on regular expressions in PHP. Posted by Feighen Oosterbroekone I sincerely enjoy in Rust. It works in a lot of different scenarios, the most basic is in a local scope using let. let tuple = (1, 2); let (a, b) = tuple; // => a = 1; b = 2 Structs Should you have the need to capture a nested tuple or something, you can do that with the Haskell @ syntax: struct Foo { x: (uint, uint), y: uint } let foo = Foo { x: (1, 2), y: 3 }; let Foo { x: tuple @ (a, b), .. } = foo; // => a == 1; b == 2; tuple == (1, 2) You can destructure structs and rename the variables: struct Point { x: uint, y: uint } let p = Point { x: 1, y: 2 }; let Point { x: new_x, y: new_y } = p; // => new_x == 1, new_y == 2 The order is not important: let Point { y, x } = p; https://framework.zend.com/issues/browse/ZF-10201 // => y == 2, x == 1 let Point { y: y2, x: x2} = p; // => y2 == 2, x2 == 1 and you can also ignore some variables: let Point { y: y3, .. } = p; // => y3 == 2 let Point { y } = p; // -> error: pattern does not mention field `x` you can match on ranges let b = match 5 { 0..5 => true, _ => false}; // => true match range and capture the value: let age = 10; let pax = match age { 0..2 http://pzol.github.io/getting_rusty/posts/20140417_destructuring_in_rust/ => ~"infant", a @ 2..12 => format!("child ({} yrs)", a), _ => ~"adult" }; assert_eq!(pax, ~"child (10 yrs)"); Struct Variants It also can be used to destructure struct variants: #![feature(struct_variant)] enum Fagazi { Fob { a: int }, Foo { b: int, c: int } } #[test] fn test_enum() { let foo = Foo { b: 1, c: 2 }; match foo { Foo { b, c } if b > 2 => assert!((b,c) == (1, 2)), Foo { b, c } => assert!((b,c) == (1, 2)), _ => fail!("This will never happen, but the compiler doesn't know") }; } You cannot just destructure an enum with multiple variants using let: let Foo { b, c } = foo; // -> error: refutable pattern in local binding You need to use a match instead of a simple let, because let can never fail using the second condition in match, the compiler knows, all possible paths have been exhausted. One more cool feature of match are guard clauses: let foo = Foo { b: 3, c: 2 }; match foo { Foo { b, c } if b <= 2 => assert!(b <= 2 && c == 2), Foo { b, c } => assert!((b, c) == (3, 2)), _ => unreachable!() }; See the if b <= 2 in the first line? This is called a guard, it will match only if the pattern matches and the guard clause is true. Take also notice of the unreachable!() expression. As mentioned before all match clauses need to be exhaustive. unreachable!() expands to fail!("internal error: entered unreachable code"). match allows to match on concrete values: let foo = Some(1); match foo { Some(3) => println!("three"), Some(2) => println!("two"), Some(v) => println!("not two, {}", v), None => u
Sign in Pricing Blog Support Search GitHub This repository Watch 216 Star 856 Fork 214 Microsoft/visualfsharp Code Issues https://github.com/Microsoft/visualfsharp/issues/1394 290 Pull requests 30 Projects 0 Wiki Pulse Graphs New issue http://www.z-f.fr/forum/viewtopic.php?id=1205 Impossible error when writing impossible pattern matching #1394 Closed tpetricek opened this Issue Aug 1, 2016 · 1 comment Projects None yet Labels Area-Compiler bug Up for Grabs Urgency-Soon Milestone No milestone Assignees No one assigned 2 participants tpetricek commented internal error Aug 1, 2016 When you use active pattern as if it was a discriminated union case with a named field, you get "internal error: impossible". Repro steps let (|A|B|) n = if n%2 = 0 then A n else B n match 10 with A(hoho=n) -> n | _ -> 0 Expected behavior Error message internal error matching saying that A is an active pattern and I cannot treat it as a DU case with named fields. Actual behavior stdin(96,1): error FS0073: internal error: impossible (Failure) Related information This is from F# interactive version 14.0.23413.0, running on latest .NET on Windows 8. dsyme added bug Area-Compiler Urgency-Soon Up for Grabs labels Aug 2, 2016 AviAvni referenced this issue Aug 16, 2016 Merged Fix issue #1394 #1444 KevinRansom pushed a commit that closed this issue Aug 20, 2016 AviAvni #1394 73234af KevinRansom closed this in 73234af Aug 20, 2016 tpetricek commented Aug 20, 2016 @AviAvni @KevinRansom Awesome 👠Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc. Terms Privacy Security Status Help You can't perform
Accueil forums Liste des membres Recherche Inscription S'identifier Vous n'êtes pas identifié. Pages: 1 Accueil forums»Général»[Résolu] Form / Validator : erreur : Internal error matching pattern #129-04-2008 12:25:18 whitespirit Membre Date d'inscription: 25-01-2008 Messages: 393 [Résolu] Form / Validator : erreur : Internal error matching pattern Bonjour, Je souhaiterai créer un validateur qui test accepte uniquement les chiffres sous la forme { 1 1.00 1.0 10.00 } bref un format monétaire.J'ai ce validateur : Code:->addValidator(new Zend_Validate_Regex('^[-+]?[0-9]*\.?[0-9]+$'),true, array('messages'=>'Entrer un format monétaire 0.00'))J'ai l'erreur suivante Code:Internal error matching pattern '^[-+]?[0-9]*\,?[0-9]+$' against value '1.00' C:\wamp\www\location\library\Zend\Validate\Regex.php à la ligne 116A la ligne 116, j'ai le code suivant :Code:public function isValid($value) { $valueString = (string) $value; $this->_setValue($valueString); $status = @preg_match($this->_pattern, $valueString); if (false === $status) { /** * @see Zend_Validate_Exception */ require_once 'Zend/Validate/Exception.php'; throw new Zend_Validate_Exception("Internal error matching pattern '$this->_pattern' against value '$valueString'"); } if (!$status) { $this->_error(); return false; } return true; }Ce que je ne comprends pas :- Pourquoi je tombe dans le if (false === $status) alors que si l'expression passé en paramètre est fausse, je dois récupérer en sortie "false" fournit par if(!$status) ?Merci pour vos lumières Dernière modification par whitespirit (30-04-2008 07:32:01) Hors ligne #229-04-2008 18:54:52 whitespirit Membre Date d'inscription: 25-01-2008 Messages: 393 Re: [Résolu] Form / Validator : erreur : Internal error matching pattern C'est parcequ'il fallait mettre / autour de l'expression, ce qui me donne '/