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Minor improvements for javascript runtime (#425)

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Max Graey 2019-10-01 11:29:30 +03:00 committed by Alexey Andreev
parent 810ee0f49e
commit e23293a8af
1 changed files with 28 additions and 35 deletions
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61
core/src/main/resources/org/teavm/backend/javascript/runtime.js
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@ -24,7 +24,11 @@ function $rt_nextId() {
return x; return x;
} }
function $rt_compare(a, b) { function $rt_compare(a, b) {
return a > b ? 1 : a < b ? -1 : a === b ? 0 : 1; var nanA = a != a;
var nanB = b != b;
if (nanA | nanB) return nanA - nanB;
if (a === 0 && b === 0) { a = 1 / a, b = 1 / b; }
return (a > b) - (a < b);
} }
function $rt_isInstance(obj, cls) { function $rt_isInstance(obj, cls) {
return obj !== null && !!obj.constructor.$meta && $rt_isAssignable(obj.constructor, cls); return obj !== null && !!obj.constructor.$meta && $rt_isAssignable(obj.constructor, cls);
@ -44,16 +48,26 @@ function $rt_isAssignable(from, to) {
} }
return false; return false;
} }
Array.prototype.fill = Array.prototype.fill || function(value,start,end) {
var len = this.length;
if (!len) return this;
start = start | 0;
var i = start < 0
? Math.max(len + start, 0)
: Math.min(start, len);
end = end === undefined ? len : end | 0;
end = end < 0
? Math.max(len + end, 0)
: Math.min(end, len);
for (; i < end; i++) {
this[i] = value;
}
return this;
};
function $rt_createArray(cls, sz) { function $rt_createArray(cls, sz) {
var data = new Array(sz); var data = new Array(sz);
var arr = new $rt_array(cls, data); var arr = new $rt_array(cls, data);
if (sz > 0) { data.fill(null);
var i = 0;
do {
data[i] = null;
i = (i + 1) | 0;
} while (i < sz);
}
return arr; return arr;
} }
function $rt_wrapArray(cls, data) { function $rt_wrapArray(cls, data) {
@ -65,9 +79,7 @@ function $rt_createUnfilledArray(cls, sz) {
function $rt_createLongArray(sz) { function $rt_createLongArray(sz) {
var data = new Array(sz); var data = new Array(sz);
var arr = new $rt_array($rt_longcls(), data); var arr = new $rt_array($rt_longcls(), data);
for (var i = 0; i < sz; i = (i + 1) | 0) { data.fill(Long_ZERO);
data[i] = Long_ZERO;
}
return arr; return arr;
} }
function $rt_createNumericArray(cls, nativeArray) { function $rt_createNumericArray(cls, nativeArray) {
@ -568,7 +580,6 @@ function $dbg_class(obj) {
} }
return clsName; return clsName;
} }
function Long(lo, hi) { function Long(lo, hi) {
this.lo = lo | 0; this.lo = lo | 0;
this.hi = hi | 0; this.hi = hi | 0;
@ -598,7 +609,7 @@ Long.prototype.valueOf = function() {
var Long_ZERO = new Long(0, 0); var Long_ZERO = new Long(0, 0);
var Long_MAX_NORMAL = 1 << 18; var Long_MAX_NORMAL = 1 << 18;
function Long_fromInt(val) { function Long_fromInt(val) {
return val >= 0 ? new Long(val, 0) : new Long(val, -1); return new Long(val, (-(val < 0)) | 0);
} }
function Long_fromNumber(val) { function Long_fromNumber(val) {
if (val >= 0) { if (val >= 0) {
@ -608,14 +619,8 @@ function Long_fromNumber(val) {
} }
} }
function Long_toNumber(val) { function Long_toNumber(val) {
var lo = val.lo; return 0x100000000 * val.hi + (val.lo >>> 0);
var hi = val.hi;
if (lo < 0) {
lo += 0x100000000;
}
return 0x100000000 * hi + lo;
} }
var $rt_imul = Math.imul || function(a, b) { var $rt_imul = Math.imul || function(a, b) {
var ah = (a >>> 16) & 0xFFFF; var ah = (a >>> 16) & 0xFFFF;
var al = a & 0xFFFF; var al = a & 0xFFFF;
@ -624,20 +629,8 @@ var $rt_imul = Math.imul || function(a, b) {
return (al * bl + (((ah * bl + al * bh) << 16) >>> 0)) | 0; return (al * bl + (((ah * bl + al * bh) << 16) >>> 0)) | 0;
}; };
var $rt_udiv = function(a, b) { var $rt_udiv = function(a, b) {
if (a < 0) { return ((a >>> 0) / (b >>> 0)) >>> 0;
a += 0x100000000;
}
if (b < 0) {
b += 0x100000000;
}
return (a / b) | 0;
}; };
var $rt_umod = function(a, b) { var $rt_umod = function(a, b) {
if (a < 0) { return ((a >>> 0) % (b >>> 0)) >>> 0;
a += 0x100000000;
}
if (b < 0) {
b += 0x100000000;
}
return (a % b) | 0;
}; };