ORegEx.js

Regular Expressions for Objects

ORegEx is a JavaScript (Web and/or Node) module that allows for the use of a RegEx-like grammar on Objects, rather than Strings. Not only is ORegEx's grammar robust and powerful, it's also highly extensible, so that you can define your own helper functions, or even customize the way the parser handles things like: * Type Checking * Property Access * Property Value Testing etc. ORegEx does not care about whitespace, so you can have selector strings that span only one line, or hundreds, and they'll evaluate the same way.

ORegEx Selector Filters

• * : Wild Card. Will match anything.
• #$id : Checks if the given object's 'id' property (if one exists) matches $id
• .$class : Checks if the given object is an instance of the class referred to by $class
• ..$class : Checks if the given object is an instance of the class referred to by $class, or an instance of any subclass of $class
• :$name : If a helper function is registered under $name, then invokes the helper function on the given object, otherwise, checks if the property of the given object referred to by $name is truthy
• [$name] : Checks for the existence of $name as a property of the given object
• [$name = $value] : Checks if the property $name of the given object is equal to $value
• [$name != $value] : Checks that the $name property of the given object is not equal to $value
• [$name .= $type] : Checks that the $name property of the given object is of type $type
• [$name => $sel] : Checks that the property $name1 of the given object is matched by the nested filter $sel`
• ($filter) : An encapsulated filter group
• $filterOne | $filterTwo : Checks that the given object is matched by either $filterOne or $filterTwo
• $filterOne & $filterTwo : Checks that the given object is matched by both $filterOne and $filterTwo
• $condition ? $ifTrue : $ifNot : Ternary conditional filter. If the given object is matched by the $condition filter, then check that it is also matched by the $ifTrue filter, otherwise, ensure that it is matched by the $ifNot filter
• /* $comment.. */ : ORegEx Comment

ORegEx API

ORegEx Object Methods

As of right now, the only useful method of the ORegEx Object is test, which accepts an object as its only argument, and returns whether that object was matched by this ORegEx.

Examples

Here's a simple example of ORegEx at work in NodeJS.

var oregex = require("oregex");

var obj = {
	"name" : "Ryan Davis",
	"age" : 18,
	"hobbies" : ["programming", "gaming", "..programming"],
	"exhausted" : true
};
var selector1 = oregex.compile("[name .= 'String'] [name = 'Ryan Davis'] [age .= Int] [age = 18] [hobbies .= 'Array'] :exhausted");
var selector2 = oregex.compile("[name .= 'String'] [name != 'Ryan Davis'] [age .= Int] [age != 18] [hobbies .= 'Array'] :exhausted");

selector1.test( obj ); //=> 'true'
selector2.test( obj ); //=> 'false'

You can also find several much more extensive examples in the 'examples' folder.