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stjs.js
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stjs.js
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/*
* Copyright 2011 Alexandru Craciun, Eyal Kaspi
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**** Functionality in Java, but not in JS ********
* methods added to JS prototypes
*/
var NOT_IMPLEMENTED = function(){
throw "This method is not implemented in Javascript.";
}
JavalikeEquals = function(value){
if (value == null)
return false;
if (value.valueOf)
return this.valueOf() === value.valueOf();
return this === value;
}
/* String */
if (!String.prototype.equals) {
String.prototype.equals=JavalikeEquals;
}
if (!String.prototype.getBytes) {
String.prototype.getBytes=NOT_IMPLEMENTED;
}
if (!String.prototype.getChars) {
String.prototype.getChars=NOT_IMPLEMENTED;
}
if (!String.prototype.contentEquals){
String.prototype.contentEquals=NOT_IMPLEMENTED;
}
if (!String.prototype.startsWith) {
String.prototype.startsWith=function(start, from){
var f = from != null ? from : 0;
return this.substring(f, f + start.length) == start;
}
}
if (!String.prototype.endsWith) {
String.prototype.endsWith=function(end){
if (end == null)
return false;
if (this.length < end.length)
return false;
return this.substring(this.length - end.length, this.length) == end;
}
}
if (!String.prototype.trim) {
var trimLeft = /^\s+/;
var trimRight = /\s+$/;
String.prototype.trim = function( ) {
return this.replace( trimLeft, "" ).replace( trimRight, "" );
}
}
if (!String.prototype.matches){
String.prototype.matches=function(regexp){
return this.match("^" + regexp + "$") != null;
}
}
if (!String.prototype.compareTo){
String.prototype.compareTo=function(other){
if (other == null)
return 1;
if (this < other)
return -1;
if (this == other)
return 0;
return 1;
}
}
if (!String.prototype.compareToIgnoreCase){
String.prototype.compareToIgnoreCase=function(other){
if (other == null)
return 1;
return this.toLowerCase().compareTo(other.toLowerCase());
}
}
if (!String.prototype.equalsIgnoreCase){
String.prototype.equalsIgnoreCase=function(other){
if (other == null)
return false;
return this.toLowerCase() === other.toLowerCase();
}
}
if (!String.prototype.codePointAt){
String.prototype.codePointAt=String.prototype.charCodeAt;
}
if (!String.prototype.codePointBefore){
String.prototype.codePointBefore=NOT_IMPLEMENTED;
}
if (!String.prototype.codePointCount){
String.prototype.codePointCount=NOT_IMPLEMENTED;
}
if (!String.prototype.replaceAll){
String.prototype.replaceAll=function(regexp, replace){
return this.replace(new RegExp(regexp, "g"), replace);
}
}
if (!String.prototype.replaceFirst){
String.prototype.replaceFirst=function(regexp, replace){
return this.replace(new RegExp(regexp), replace);
}
}
if (!String.prototype.regionMatches){
String.prototype.regionMatches=function(ignoreCase, toffset, other, ooffset, len){
if (arguments.length == 4){
len=arguments[3];
ooffset=arguments[2];
other=arguments[1];
toffset=arguments[0];
ignoreCase=false;
}
if (toffset < 0 || ooffset < 0 || other == null || toffset + len > this.length || ooffset + len > other.length)
return false;
var s1 = this.substring(toffset, toffset + len);
var s2 = other.substring(ooffset, ooffset + len);
return ignoreCase ? s1.equalsIgnoreCase(s2) : s1 === s2;
}
}
//force valueof to match the Java's behavior
String.valueOf=function(value){
return new String(value);
}
/* Number */
var Byte=Number;
var Double=Number;
var Float=Number;
var Integer=Number;
var Long=Number;
var Short=Number;
/* type conversion - approximative as Javascript only has integers and doubles */
if (!Number.prototype.intValue) {
Number.prototype.intValue=function(){
return parseInt(this);
}
}
if (!Number.prototype.shortValue) {
Number.prototype.shortValue=function(){
return parseInt(this);
}
}
if (!Number.prototype.longValue) {
Number.prototype.longValue=function(){
return parseInt(this);
}
}
if (!Number.prototype.byteValue) {
Number.prototype.byteValue=function(){
return parseInt(this);
}
}
if (!Number.prototype.floatValue) {
Number.prototype.floatValue=function(){
return parseFloat(this);
}
}
if (!Number.prototype.doubleValue) {
Number.prototype.doubleValue=function(){
return parseFloat(this);
}
}
if (!Number.parseInt) {
Number.parseInt = parseInt;
}
if (!Number.parseShort) {
Number.parseShort = parseInt;
}
if (!Number.parseLong) {
Number.parseLong = parseInt;
}
if (!Number.parseByte) {
Number.parseByte = parseInt;
}
if (!Number.parseDouble) {
Number.parseDouble = parseFloat;
}
if (!Number.parseFloat) {
Number.parseFloat = parseFloat;
}
if (!Number.isNaN) {
Number.isNaN = isNaN;
}
if (!Number.prototype.isNaN) {
Number.prototype.isNaN = isNaN;
}
if (!Number.prototype.equals) {
Number.prototype.equals=JavalikeEquals;
}
//force valueof to match approximately the Java's behavior (for Integer.valueOf it returns in fact a double)
Number.valueOf=function(value){
return new Number(value).valueOf();
}
/* Boolean */
if (!Boolean.prototype.equals) {
Boolean.prototype.equals=JavalikeEquals;
}
//force valueof to match the Java's behavior
Boolean.valueOf=function(value){
return new Boolean(value).valueOf();
}
/************* STJS helper functions ***************/
var stjs={};
stjs.global=this;
stjs.skipCopy = {"prototype":true, "constructor": true, "$typeDescription":true, "$inherit" : true};
stjs.ns=function(path){
var p = path.split(".");
var obj = stjs.global;
for(var i = 0; i < p.length; ++i){
var part = p[i];
obj = obj[part] = obj[part] || {};
}
return obj;
};
stjs.copyProps=function(from, to){
for(key in from){
if (!stjs.skipCopy[key])
to[key] = from[key];
}
return to;
};
stjs.extend=function(_constructor, _super, _implements, _initializer, _typeDescription){
if(typeof(_typeDescription) !== "object"){
// stjs 1.3+ always passes an non-null object to _typeDescription => The code calling stjs.extend
// was generated with version 1.2 or earlier, so let's call the 1.2 version of stjs.extend
return stjs.extend12.apply(this, arguments);
}
_constructor.$inherit=[];
var key, a;
if(_super != null){
// I is used as a no-op constructor that has the same prototype as _super
// we do this because we cannot predict the result of calling new _super()
// without parameters (it might throw an exception).
// Basically, the following 3 lines are a safe equivalent for
// _constructor.prototype = new _super();
var I = function(){};
I.prototype = _super.prototype;
_constructor.prototype = new I();
// copy static properties for super
// assign every method from proto instance
stjs.copyProps(_super, _constructor);
stjs.copyProps(_super.$typeDescription, _typeDescription);
//add the super class to inherit array
_constructor.$inherit.push(_super);
}
// copy static properties for interfaces
for(a = 0; a < _implements.length; ++a){
stjs.copyProps(_implements[a], _constructor);
_constructor.$inherit.push(_implements[a]);
}
// remember the correct constructor
_constructor.prototype.constructor = _constructor;
// run the initializer to assign all static and instance variables/functions
if(_initializer != null){
_initializer(_constructor, _constructor.prototype);
}
_constructor.$typeDescription = _typeDescription;
// add the default equals method if it is not present yet, and we don't have a superclass
if(_super == null && !_constructor.prototype.equals){
_constructor.prototype.equals = JavalikeEquals;
}
// build package and assign
return _constructor;
};
/**
* 1.2 and earlier version of stjs.extend. Included for backwards compatibility
*/
stjs.extend12=function( _constructor, _super, _implements){
var key, a;
var I = function(){};
I.prototype = _super.prototype;
_constructor.prototype = new I();
//copy static properties for super and interfaces
// assign every method from proto instance
for(a = 1; a < arguments.length; ++a){
stjs.copyProps(arguments[a], _constructor);
}
// remember the correct constructor
_constructor.prototype.constructor = _constructor;
// add the default equals method if we don't have a superclass. Code generated with version 1.2 will
// override this method is equals() is present in the original java code.
// this was not part of the original 1.2 version of extends, however forward compatibility
// with 1.3 requires it
if(_super == null){
_constructor.prototype.equals = JavalikeEquals;
}
// build package and assign
return _constructor;
};
/**
* checks if the child is an instanceof parent. it checks recursively if "parent" is the child itself or it's found somewhere in the $inherit array
*/
stjs.isInstanceOf=function(child, parent){
if (child === parent)
return true;
if (!child.$inherit)
return false;
for(var i in child.$inherit){
if (stjs.isInstanceOf(child.$inherit[i], parent)) {
return true;
}
}
return false;
}
stjs.enumEntry=function(idx, name){
this._name = name;
this._ordinal = idx;
};
stjs.enumEntry.prototype.name=function(){
return this._name;
};
stjs.enumEntry.prototype.ordinal=function(){
return this._ordinal;
};
stjs.enumEntry.prototype.toString=function(){
return this._name;
};
stjs.enumEntry.prototype.equals=JavalikeEquals;
stjs.enumeration=function(){
var i;
var e = {};
e._values = [];
for(i = 0; i < arguments.length; ++i){
e[arguments[i]] = new stjs.enumEntry(i, arguments[i]);
e._values[i] = e[arguments[i]];
}
e.values = function(){return this._values;};
e.valueOf=function(label){
return this[label];
}
return e;
};
/**
* if true the execution of generated main methods is disabled.
* this is useful when executing unit tests, to no have the main methods executing before the tests
*/
stjs.mainCallDisabled = false;
stjs.exception=function(err){
return err;
}
stjs.isEnum=function(obj){
return obj != null && obj.constructor == stjs.enumEntry;
}
stjs.trunc=function(n) {
if (n == null)
return null;
return n | 0;
}
stjs.converters = {
Date : function(s, type) {
var a = /^(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)$/
.exec(s);
if (a) {
return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4], +a[5],
+a[6]));
}
return null;
},
Enum : function(s, type){
return eval(type.arguments[0])[s];
}
};
/** *********** global ************** */
function exception(err){
return err;
}
function isEnum(obj){
return obj != null && obj.constructor == stjs.enumEntry;
}
/******* parsing *************/
/**
* parse a json string using the type definition to build a typed object hierarchy
*/
stjs.parseJSON = (function () {
var number
= '(?:-?\\b(?:0|[1-9][0-9]*)(?:\\.[0-9]+)?(?:[eE][+-]?[0-9]+)?\\b)';
var oneChar = '(?:[^\\0-\\x08\\x0a-\\x1f\"\\\\]'
+ '|\\\\(?:[\"/\\\\bfnrt]|u[0-9A-Fa-f]{4}))';
var string = '(?:\"' + oneChar + '*\")';
// Will match a value in a well-formed JSON file.
// If the input is not well-formed, may match strangely, but not in an unsafe
// way.
// Since this only matches value tokens, it does not match whitespace, colons,
// or commas.
var jsonToken = new RegExp(
'(?:false|true|null|[\\{\\}\\[\\]]'
+ '|' + number
+ '|' + string
+ ')', 'g');
// Matches escape sequences in a string literal
var escapeSequence = new RegExp('\\\\(?:([^u])|u(.{4}))', 'g');
// Decodes escape sequences in object literals
var escapes = {
'"': '"',
'/': '/',
'\\': '\\',
'b': '\b',
'f': '\f',
'n': '\n',
'r': '\r',
't': '\t'
};
function unescapeOne(_, ch, hex) {
return ch ? escapes[ch] : String.fromCharCode(parseInt(hex, 16));
}
var constructors = {};
function constr(name, param){
var c = constructors[name];
if (!c)
constructors[name] = c = eval(name);
return new c(param);
}
function convert(type, json){
if (!type)
return json;
var cv = stjs.converters[type.name || type];
if (cv)
return cv(json, type);
//hopefully the type has a string constructor
return constr(type, json);
}
function builder(type){
if (!type)
return {};
if (typeof type == "function")
return new type();
if (type.name) {
if (type.name == "Map")
return {};
if (type.name == "Map")
return [];
return constr(type.name);
}
return constr(type);
}
// A non-falsy value that coerces to the empty string when used as a key.
var EMPTY_STRING = new String('');
var SLASH = '\\';
// Constructor to use based on an open token.
var firstTokenCtors = { '{': Object, '[': Array };
var hop = Object.hasOwnProperty;
function nextMatch(str){
var m = jsonToken.exec(str);
return m != null ? m[0] : null;
}
return function (json, type) {
// Split into tokens
// Construct the object to return
var result;
var tok = nextMatch(json);
var topLevelPrimitive = false;
if ('{' === tok) {
result = builder(type, null);
} else if ('[' === tok) {
result = [];
} else {
// The RFC only allows arrays or objects at the top level, but the JSON.parse
// defined by the EcmaScript 5 draft does allow strings, booleans, numbers, and null
// at the top level.
result = [];
topLevelPrimitive = true;
}
// If undefined, the key in an object key/value record to use for the next
// value parsed.
var key;
// Loop over remaining tokens maintaining a stack of uncompleted objects and
// arrays.
var stack = [result];
var stack2 = [type];
for (tok = nextMatch(json); tok != null; tok = nextMatch(json)) {
var cont;
switch (tok.charCodeAt(0)) {
default: // sign or digit
cont = stack[0];
cont[key || cont.length] = +(tok);
key = void 0;
break;
case 0x22: // '"'
tok = tok.substring(1, tok.length - 1);
if (tok.indexOf(SLASH) !== -1) {
tok = tok.replace(escapeSequence, unescapeOne);
}
cont = stack[0];
if (!key) {
if (cont instanceof Array) {
key = cont.length;
} else {
key = tok || EMPTY_STRING; // Use as key for next value seen.
stack2[0] = cont.constructor.$typeDescription ? cont.constructor.$typeDescription[key] : stack2[1].arguments[1];
break;
}
}
cont[key] = convert(stack2[0],tok);
key = void 0;
break;
case 0x5b: // '['
cont = stack[0];
stack.unshift(cont[key || cont.length] = []);
stack2.unshift(stack2[0].arguments[0]);
//put the element type desc
key = void 0;
break;
case 0x5d: // ']'
stack.shift();
stack2.shift();
break;
case 0x66: // 'f'
cont = stack[0];
cont[key || cont.length] = false;
key = void 0;
break;
case 0x6e: // 'n'
cont = stack[0];
cont[key || cont.length] = null;
key = void 0;
break;
case 0x74: // 't'
cont = stack[0];
cont[key || cont.length] = true;
key = void 0;
break;
case 0x7b: // '{'
cont = stack[0];
stack.unshift(cont[key || cont.length] = builder(stack2[0]));
stack2.unshift(null);
key = void 0;
break;
case 0x7d: // '}'
stack.shift();
stack2.shift();
break;
}
}
// Fail if we've got an uncompleted object.
if (topLevelPrimitive) {
if (stack.length !== 1) { throw new Error(); }
result = result[0];
} else {
if (stack.length) { throw new Error(); }
}
return result;
};
})();
/************* STJS asserts ***************/
var stjsAssertHandler = function(position, code, msg) {
throw msg + " at " + position;
}
function setAssertHandler(a) {
stjsAssertHandler = a;
}
function assertArgEquals(position, code, expectedValue, testValue) {
if (expepectedValue != testValue && stjsAssertHandler)
stjsAssertHandler(position, code, "Wrong argument. Expected: " + expectedValue + ", got:" + testValue);
}
function assertArgNotNull(position, code, testValue) {
if (testValue == null && stjsAssertHandler)
stjsAssertHandler(position, code, "Wrong argument. Null value");
}
function assertArgTrue(position, code, condition) {
if (!condition && stjsAssertHandler)
stjsAssertHandler(position, code, "Wrong argument. Condition is false");
}
function assertStateEquals(position, code, expectedValue, testValue) {
if (expepectedValue != testValue && stjsAssertHandler)
stjsAssertHandler(position, code, "Wrong state. Expected: " + expectedValue + ", got:" + testValue);
}
function assertStateNotNull(position, code, testValue) {
if (testValue == null && stjsAssertHandler)
stjsAssertHandler("Wrong state. Null value");
}
function assertStateTrue(position, code, condition) {
if (!condition && stjsAssertHandler)
stjsAssertHandler(position, code, "Wrong state. Condition is false");
}
/** exception **/
var Throwable = function(message, cause){
if (typeof message === "string"){
this.detailMessage = message;
this.message = message;
this.cause = cause;
} else {
this.cause = message;
}
};
stjs.extend(Throwable, Error, [], function(constructor, prototype){
prototype.detailMessage = null;
prototype.cause = null;
prototype.getMessage = function() {
return this.detailMessage;
};
prototype.getLocalizedMessage = function() {
return this.getMessage();
};
prototype.getCause = function() {
return (this.cause==this ? null : this.cause);
};
prototype.toString = function() {
var s = "Exception";//TODO should get the exception's type name here
var message = this.getLocalizedMessage();
return (message != null) ? (s + ": " + message) : s;
};
//TODO use stacktrace.js script
prototype.getStackTrace = function() {
return this.stack;
};
//TODO use stacktrace.js script
prototype.printStackTrace = function(){
console.error(this.getStackTrace());
};
}, {});
var Exception = function(message, cause){
Throwable.call(this, message, cause);
};
stjs.extend(Exception, Throwable, [], function(constructor, prototype){
}, {});
var RuntimeException = function(message, cause){
Exception.call(this, message, cause);
};
stjs.extend(RuntimeException, Exception, [], function(constructor, prototype){
}, {});