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//#OPTIONS: CPP
// JS Objects stuff
function h$isFloat (n) {
return n===+n && n!==(n|0);
}
function h$isInteger (n) {
return n===+n && n===(n|0);
}
/*
-- 0 - null, 1 - integer,
-- 2 - float, 3 - bool,
-- 4 - string, 5 - array
-- 6 - object
*/
function h$typeOf(o) {
if (!(o instanceof Object)) {
if (o == null) {
return 0;
} else if (typeof o == 'number') {
if (h$isInteger(o)) {
return 1;
} else {
return 2;
}
} else if (typeof o == 'boolean') {
return 3;
} else {
return 4;
}
} else {
if (Object.prototype.toString.call(o) == '[object Array]') {
// it's an array
return 5;
} else if (!o) {
// null
return 0;
} else {
// it's an object
return 6;
}
}
}
function h$flattenObj(o) {
var l = [], i = 0;
for (var prop in o) {
l[i++] = [prop, o[prop]];
}
return l;
}
/*
build an object from key/value pairs:
var obj = h$buildObject(key1, val1, key2, val2, ...);
note: magic name:
invocations of this function are replaced by object literals wherever
possible
*/
function h$buildObject() {
var r = {}, l = arguments.length;
for(var i = 0; i < l; i += 2) {
var k = arguments[i], v = arguments[i+1];
r[k] = v;
}
return r;
}
// same as above, but from a list: [k1,v1,k2,v2,...]
function h$buildObjectFromList(xs) {
var r = {}, k, v, t;
while(IS_CONS(xs)) {
xs = CONS_TAIL(xs);
t = CONS_TAIL(xs);
if(IS_CONS(t)) {
k = CONS_HEAD(xs);
v = CONS_HEAD(t);
xs = CONS_TAIL(t);
r[k] = v;
} else {
return r;
}
}
return r;
}
// same as above, but from a list of tuples [(k1,v1),(k2,v2),...]
function h$buildObjectFromTupList(xs) {
var r = {};
while(IS_CONS(xs)) {
var h = CONS_HEAD(xs);
xs = CONS_TAIL(xs);
r[JSVAL_VAL(TUP2_1(h))] = JSVAL_VAL(TUP2_2(h));
}
return r;
}
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