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/*
UriTemplates Template Processor - Version: @VERSION - Dated: @DATE
(c) [email protected] - 2011-2012
Licensed under ALPv2
*/
;
var uritemplate = (function() {
// Below are the functions we originally used from jQuery.
// The implementations below are often more naive then what is inside jquery, but they suffice for our needs.
function isFunction(fn) {
return typeof fn == 'function';
}
function isEmptyObject (obj) {
for(var name in obj){
return false;
}
return true;
}
function extend(base, newprops) {
for (var name in newprops) {
base[name] = newprops[name];
}
return base;
}
/**
* Create a runtime cache around retrieved values from the context.
* This allows for dynamic (function) results to be kept the same for multiple
* occuring expansions within one template.
* Note: Uses key-value tupples to be able to cache null values as well.
*/
//TODO move this into prep-processing
function CachingContext(context) {
this.raw = context;
this.cache = {};
}
CachingContext.prototype.get = function(key) {
var val = this.lookupRaw(key);
var result = val;
if (isFunction(val)) { // check function-result-cache
var tupple = this.cache[key];
if (tupple !== null && tupple !== undefined) {
result = tupple.val;
} else {
result = val(this.raw);
this.cache[key] = {key: key, val: result};
// NOTE: by storing tupples we make sure a null return is validly consistent too in expansions
}
}
return result;
};
CachingContext.prototype.lookupRaw = function(key) {
return CachingContext.lookup(this, this.raw, key);
};
CachingContext.lookup = function(me, context, key) {
var result = context[key];
if (result !== undefined) {
return result;
} else {
var keyparts = key.split('.');
var i = 0, keysplits = keyparts.length - 1;
for (i = 0; i