txDestructor fxGetHostDestructor(txMachine* the, txSlot* slot)
{
txSlot* host = fxCheckHostObject(the, slot);
if (host) {
if (!(host->flag & XS_HOST_HOOKS_FLAG))
return host->value.host.variant.destructor;
mxSyntaxError("C: xsGetHostDestructor: no host destructor");
}
mxSyntaxError("C: xsGetHostDestructor: no host object");
return NULL;
}
txHostHooks* fxGetHostHooks(txMachine* the, txSlot* slot)
{
txSlot* host = fxCheckHostObject(the, slot);
if (host) {
if (host->flag & XS_HOST_HOOKS_FLAG)
return host->value.host.variant.hooks;
mxSyntaxError("C: xsGetHostHooks: no host hooks");
}
mxSyntaxError("C: xsGetHostHooks: no host object");
return NULL;
}
void fxParseJSONObject(txMachine* the, txJSONParser* theParser)
{
txSlot* anObject;
txSlot* at;
txSlot* aProperty;
fxGetNextJSONToken(the, theParser);
mxPush(mxObjectPrototype);
anObject = fxNewObjectInstance(the);
for (;;) {
if (theParser->token == XS_JSON_TOKEN_RIGHT_BRACE)
break;
if (theParser->token != XS_JSON_TOKEN_STRING) {
mxSyntaxError("missing name");
break;
}
mxPushString(theParser->string->value.string);
at = fxAt(the, the->stack);
if (theParser->reviver)
mxPushString(theParser->string->value.string);
fxGetNextJSONToken(the, theParser);
if (theParser->token != XS_JSON_TOKEN_COLON) {
mxSyntaxError("missing :");
break;
}
fxGetNextJSONToken(the, theParser);
fxParseJSONValue(the, theParser);
if (theParser->reviver) {
mxPushInteger(2);
mxPushReference(anObject);
mxPushReference(theParser->reviver);
fxCall(the);
}
if (the->stack->kind != XS_UNDEFINED_KIND) {
aProperty = fxSetProperty(the, anObject, at->value.at.id, at->value.at.index, XS_OWN);
aProperty->kind = the->stack->kind;
aProperty->value = the->stack->value;
}
the->stack++;
the->stack++;
if (theParser->token != XS_JSON_TOKEN_COMMA)
break;
fxGetNextJSONToken(the, theParser);
}
if (theParser->token != XS_JSON_TOKEN_RIGHT_BRACE)
mxSyntaxError("missing }");
fxGetNextJSONToken(the, theParser);
}
void fx_decodeURIComponent(txMachine* the)
{
if (mxArgc < 1)
mxSyntaxError("no URI Component parameter");
fxToString(the, mxArgv(0));
fxDecodeURI(the, (txString)gxURIEmptySet);
}
void fxParseJSONArray(txMachine* the, txJSONParser* theParser)
{
txSlot* anArray;
txIndex aLength;
txSlot* anItem;
fxGetNextJSONToken(the, theParser);
mxPush(mxArrayPrototype);
anArray = fxNewArrayInstance(the);
aLength = 0;
anItem = fxLastProperty(the, anArray);
for (;;) {
if (theParser->token == XS_JSON_TOKEN_RIGHT_BRACKET)
break;
fxParseJSONValue(the, theParser);
aLength++;
anItem->next = fxNewSlot(the);
anItem = anItem->next;
anItem->kind = the->stack->kind;
anItem->value = the->stack->value;
the->stack++;
if (theParser->token != XS_JSON_TOKEN_COMMA)
break;
fxGetNextJSONToken(the, theParser);
}
anArray->next->value.array.length = aLength;
fxCacheArray(the, anArray);
if (theParser->token != XS_JSON_TOKEN_RIGHT_BRACKET)
mxSyntaxError("missing ]");
fxGetNextJSONToken(the, theParser);
}
void fx_decodeURI(txMachine* the)
{
if (mxArgc < 1)
mxSyntaxError("no URI parameter");
fxToString(the, mxArgv(0));
fxDecodeURI(the, (txString)gxURIReservedSet);
}
txInteger fxCheckVar(txMachine* the, txInteger theIndex)
{
#if mxBoundsCheck
if ((theIndex < 0) || (mxVarc <= theIndex))
mxSyntaxError("C: xsVar(%ld): invalid index", theIndex);
#endif
return theIndex;
}
void fxSetHostData(txMachine* the, txSlot* slot, void* theData)
{
txSlot* host = fxCheckHostObject(the, slot);
if (host)
host->value.host.data = theData;
else
mxSyntaxError("C: xsSetHostData: no host object");
}
void* fxGetHostData(txMachine* the, txSlot* slot)
{
txSlot* host = fxCheckHostObject(the, slot);
if (host)
return host->value.host.data;
mxSyntaxError("C: xsGetHostData: no host object");
return NULL;
}
void fx_Date_UTC(txMachine* the)
{
txTimeDescription td;
c_time_t time;
txNumber number;
if (mxArgc < 1)
mxSyntaxError("no year parameter");
td.tm.tm_year = fxToInteger(the, mxArgv(0));
if ((td.tm.tm_year < 0) || (99 < td.tm.tm_year))
td.tm.tm_year -= 1900;
if (mxArgc < 2)
mxSyntaxError("no month parameter");
td.tm.tm_mon = fxToInteger(the, mxArgv(1));
if (mxArgc > 2)
td.tm.tm_mday = fxToInteger(the, mxArgv(2));
else
td.tm.tm_mday = 1;
if (mxArgc > 3)
td.tm.tm_hour = fxToInteger(the, mxArgv(3));
else
td.tm.tm_hour = 0;
if (mxArgc > 4)
td.tm.tm_min = fxToInteger(the, mxArgv(4));
else
td.tm.tm_min = 0;
if (mxArgc > 5)
td.tm.tm_sec = fxToInteger(the, mxArgv(5));
else
td.tm.tm_sec = 0;
if (mxArgc > 6)
td.ms = fxToInteger(the, mxArgv(6));
else
td.ms = 0;
td.tm.tm_isdst = 0;
time = c_mktime(&(td.tm));
if (time == -1)
number = NAN;
else {
number = (time * 1000.0) + td.ms;
number -= gxDeltaTime;
}
mxResult->value.number = number;
mxResult->kind = XS_NUMBER_KIND;
}
void fxParseJSON(txMachine* the, txJSONParser* theParser)
{
mxPush(mxEmptyString);
theParser->string = the->stack;
fxGetNextJSONToken(the, theParser);
fxParseJSONValue(the, theParser);
if (theParser->token != XS_JSON_TOKEN_EOF)
mxSyntaxError("missing EOF");
}
void fxSetHostDestructor(txMachine* the, txSlot* slot, txDestructor theDestructor)
{
txSlot* host = fxCheckHostObject(the, slot);
if (host) {
host->flag &= ~XS_HOST_HOOKS_FLAG;
host->value.host.variant.destructor = theDestructor;
}
else
mxSyntaxError("C: xsSetHostDestructor: no host object");
}
void fxSetHostHooks(txMachine* the, txSlot* slot, txHostHooks* theHooks)
{
txSlot* host = fxCheckHostObject(the, slot);
if (host) {
host->flag |= XS_HOST_HOOKS_FLAG;
host->value.host.variant.hooks = theHooks;
}
else
mxSyntaxError("C: xsSetHostHooks: no host object");
}
void fxSerializeJSON(txMachine* the, txJSONSerializer* theSerializer)
{
txSlot* aSlot;
txInteger aFlag;
aSlot = fxGetInstance(the, mxThis);
theSerializer->offset = 0;
theSerializer->size = 1024;
theSerializer->buffer = c_malloc(1024);
if (!theSerializer->buffer)
mxUnknownError("out of memory");
if (mxArgc > 1) {
aSlot = mxArgv(1);
if (mxIsReference(aSlot)) {
aSlot = fxGetInstance(the, aSlot);
if (mxIsFunction(aSlot))
theSerializer->replacer = mxArgv(1);
else if (mxIsArray(aSlot))
mxSyntaxError("not yet implememented");
}
}
if (mxArgc > 2) {
aSlot = mxArgv(2);
if (mxIsReference(aSlot)) {
aSlot = fxGetInstance(the, aSlot);
if (mxIsNumber(aSlot) || mxIsString(aSlot))
aSlot = aSlot->next;
}
if ((aSlot->kind == XS_INTEGER_KIND) || (aSlot->kind == XS_NUMBER_KIND)) {
txInteger aCount = fxToInteger(the, aSlot), anIndex;
if (aCount < 0)
aCount = 0;
else if (aCount > 10)
aCount = 10;
for (anIndex = 0; anIndex < aCount; anIndex++)
theSerializer->indent[anIndex] = ' ';
}
else if (mxIsStringPrimitive(aSlot))
c_strncpy((char *)theSerializer->indent, aSlot->value.string, 10);
}
theSerializer->stack = the->stack;
mxPush(mxObjectPrototype);
fxNewObjectInstance(the);
aFlag = 0;
if (mxArgc > 0)
mxPushSlot(mxArgv(0));
else
mxPushUndefined();
mxPush(mxEmptyString);
fxSerializeJSONProperty(the, theSerializer, &aFlag);
the->stack++;
}
txInteger fxCheckArg(txMachine* the, txInteger theIndex)
{
txInteger aCount = mxArgc;
#if mxBoundsCheck
#if !mxOptimize
if ((theIndex < 0) || (aCount <= theIndex))
mxSyntaxError("C: xsArg(%ld): invalid index", theIndex);
return aCount - 1 - theIndex;
#else
aCount -= theIndex;
if (aCount >= 0)
return aCount - 1;
mxSyntaxError("C: xsArg(%ld): invalid index", theIndex);
return 0; // never happens
#endif
#else
return aCount - theIndex - 1;
#endif
}
void fxVars(txMachine* the, txInteger theCount)
{
txSlot* aStack = the->frame - 1;
if (aStack != the->stack)
mxSyntaxError("C: xsVars: too late");
fxOverflow(the, theCount, C_NULL, 0);
aStack->value.integer = theCount;
while (theCount) {
mxPushUndefined();
theCount--;
}
}
void fx_Symbol_keyFor(txMachine* the)
{
txSlot* slot;
txSlot* key;
if (mxArgc < 1) mxSyntaxError("no sym parameter");
slot = fxCheckSymbol(the, mxArgv(0));
if (!slot) mxTypeError("sym is no symbol");
key = fxGetKey(the, slot->value.ID);
if (key && ((key->flag & XS_DONT_ENUM_FLAG) == 0)) {
mxResult->kind = XS_STRING_KIND;
mxResult->value.string = key->value.key.string;
}
}
void fx_JSON_parse(txMachine* the)
{
volatile txJSONParser* aParser = C_NULL;
txSlot* slot;
mxTry(the) {
if (mxArgc < 1)
mxSyntaxError("no buffer");
aParser = c_malloc(sizeof(txJSONParser));
if (NULL == aParser)
mxUnknownError("out of memory");
c_memset((txJSONParser*)aParser, 0, sizeof(txJSONParser));
if (mxArgc > 1) {
slot = mxArgv(1);
if (slot->kind == XS_REFERENCE_KIND) {
slot = slot->value.reference;
if (slot->next && ((slot->next->kind == XS_CODE_KIND) || (slot->next->kind == XS_CODE_X_KIND) || (slot->next->kind == XS_CALLBACK_KIND)))
aParser->reviver = slot;
}
}
slot = mxArgv(0);
if (slot->kind == XS_REFERENCE_KIND) {
slot = slot->value.reference->next;
if (slot && (slot->flag & XS_INTERNAL_FLAG) && (slot->kind == XS_HOST_KIND)) {
aParser->data = slot->value.host.data;
aParser->offset = 0;
mxPushSlot(mxArgv(0));
fxGetID(the, mxID(_length));
aParser->size = fxToInteger(the, the->stack++);
}
}
if (!aParser->data) {
fxToString(the, mxArgv(0));
aParser->slot = mxArgv(0);
aParser->offset = 0;
aParser->size = c_strlen(aParser->slot->value.string);
}
fxParseJSON(the, (txJSONParser*)aParser);
mxPullSlot(mxResult);
c_free((txJSONParser*)aParser);
// @@ reviver
}
mxCatch(the) {
if (aParser)
c_free((txJSONParser*)aParser);
fxJump(the);
}
}
void fx_Symbol_for(txMachine* the)
{
txString string;
txU1* p;
txU4 sum;
txU4 modulo;
txSlot* result;
txID index;
if (mxArgc < 1)
mxSyntaxError("no key parameter");
string = fxToString(the, mxArgv(0));
p = (txU1*)string;
sum = 0;
while(*p != 0) {
sum = (sum << 1) + *p++;
}
sum &= 0x7FFFFFFF;
modulo = sum % the->symbolModulo;
result = the->symbolTable[modulo];
while (result != C_NULL) {
if (result->value.key.sum == sum)
if (c_strcmp(result->value.key.string, string) == 0)
break;
result = result->next;
}
if (result == C_NULL) {
index = the->keyIndex;
if (index == the->keyCount)
mxUnknownError("not enough IDs");
result = fxNewSlot(the);
result->next = the->symbolTable[modulo];
result->kind = XS_KEY_KIND;
result->ID = 0x8000 | index;
result->value.key.string = mxArgv(0)->value.string;
result->value.key.sum = sum;
the->keyArray[index] = result;
the->keyIndex++;
the->symbolTable[modulo] = result;
}
mxResult->kind = XS_SYMBOL_KIND;
mxResult->value.ID = result->ID;
}
void fxParseJSONValue(txMachine* the, txJSONParser* theParser)
{
switch (theParser->token) {
case XS_JSON_TOKEN_FALSE:
mxPushBoolean(0);
fxGetNextJSONToken(the, theParser);
break;
case XS_JSON_TOKEN_TRUE:
mxPushBoolean(1);
fxGetNextJSONToken(the, theParser);
break;
case XS_JSON_TOKEN_NULL:
mxPushNull();
fxGetNextJSONToken(the, theParser);
break;
case XS_JSON_TOKEN_INTEGER:
mxPushInteger(theParser->integer);
fxGetNextJSONToken(the, theParser);
break;
case XS_JSON_TOKEN_NUMBER:
mxPushNumber(theParser->number);
fxGetNextJSONToken(the, theParser);
break;
case XS_JSON_TOKEN_STRING:
mxPushString(theParser->string->value.string);
fxGetNextJSONToken(the, theParser);
break;
case XS_JSON_TOKEN_LEFT_BRACE:
fxParseJSONObject(the, theParser);
break;
case XS_JSON_TOKEN_LEFT_BRACKET:
fxParseJSONArray(the, theParser);
break;
default:
mxPushUndefined();
mxSyntaxError("invalid value");
break;
}
}
void fx_encodeURI(txMachine* the)
{
if (mxArgc < 1)
mxSyntaxError("no URI parameter");
fxEncodeURI(the, (txString)gxURIReservedAndUnescapedSet);
}
void fx_encodeURIComponent(txMachine* the)
{
if (mxArgc < 1)
mxSyntaxError("no URI Component parameter");
fxEncodeURI(the, (txString)gxURIUnescapedSet);
}
void fxGetNextJSONToken(txMachine* the, txJSONParser* theParser)
{
txString p;
txString q;
txString r;
txString s;
char c;
txInteger i;
txBoolean escaped;
txNumber number;
txU4 size;
txU4 value;
const txUTF8Sequence* sequence;
txString string;
theParser->integer = 0;
theParser->number = 0;
theParser->string->value.string = mxEmptyString.value.string;
theParser->token = XS_NO_JSON_TOKEN;
r = (theParser->data) ? theParser->data : theParser->slot->value.string;
p = r + theParser->offset;
q = r + theParser->size;
c = (p < q) ? *p : 0;
while (theParser->token == XS_NO_JSON_TOKEN) {
switch (c) {
case 0:
theParser->token = XS_JSON_TOKEN_EOF;
break;
case '\n':
case '\r':
case '\t':
case ' ':
c = (++p < q) ? *p : 0;
break;
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
s = p;
if (c == '-')
c = (++p < q) ? *p : 0;
if (('0' <= c) && (c <= '9')) {
if (c == '0') {
c = (++p < q) ? *p : 0;
}
else {
c = (++p < q) ? *p : 0;
while (('0' <= c) && (c <= '9')) {
c = (++p < q) ? *p : 0;
}
}
if (c == '.') {
c = (++p < q) ? *p : 0;
if (('0' <= c) && (c <= '9')) {
c = (++p < q) ? *p : 0;
while (('0' <= c) && (c <= '9')) {
c = (++p < q) ? *p : 0;
}
}
else
mxSyntaxError("invalid character in number");
}
if ((c == 'e') || (c == 'E')) {
c = (++p < q) ? *p : 0;
if ((c== '+') || (c == '-')) {
c = (++p < q) ? *p : 0;
}
if (('0' <= c) && (c <= '9')) {
c = (++p < q) ? *p : 0;
while (('0' <= c) && (c <= '9')) {
c = (++p < q) ? *p : 0;
}
}
else
mxSyntaxError("invalid character in number");
}
size = p - s;
if ((size + 1) > sizeof(the->nameBuffer))
mxSyntaxError("number overflow");
c_memcpy(the->nameBuffer, s, size);
the->nameBuffer[size] = 0;
theParser->number = fxStringToNumber(the->dtoa, the->nameBuffer, 0);
theParser->integer = (txInteger)theParser->number;
number = theParser->integer;
if (theParser->number == number)
theParser->token = XS_JSON_TOKEN_INTEGER;
else
theParser->token = XS_JSON_TOKEN_NUMBER;
}
else
mxSyntaxError("invalid character in number");
break;
case ',':
p++;
theParser->token = XS_JSON_TOKEN_COMMA;
break;
case ':':
p++;
theParser->token = XS_JSON_TOKEN_COLON;
break;
case '[':
p++;
theParser->token = XS_JSON_TOKEN_LEFT_BRACKET;
break;
case ']':
p++;
theParser->token = XS_JSON_TOKEN_RIGHT_BRACKET;
break;
case '{':
p++;
theParser->token = XS_JSON_TOKEN_LEFT_BRACE;
break;
case '}':
p++;
theParser->token = XS_JSON_TOKEN_RIGHT_BRACE;
break;
case '"':
c = (++p < q) ? *p : 0;
s = p;
escaped = 0;
size = 0;
for (;;) {
if ((0 <= c) && (c < 32)) {
mxSyntaxError("invalid character in string");
break;
}
else if (c == '"') {
break;
}
else if (c == '\\') {
escaped = 1;
c = (++p < q) ? *p : 0;
switch (c) {
case '"':
case '/':
case '\\':
case 'b':
case 'f':
case 'n':
case 'r':
case 't':
size++;
c = (++p < q) ? *p : 0;
break;
case 'u':
value = 0;
for (i = 0; i < 4; i++) {
c = (++p < q) ? *p : 0;
if (('0' <= c) && (c <= '9'))
value = (value * 16) + (c - '0');
else if (('a' <= c) && (c <= 'f'))
value = (value * 16) + (10 + c - 'a');
else if (('A' <= c) && (c <= 'F'))
value = (value * 16) + (10 + c - 'A');
else
mxSyntaxError("invalid character in string");
}
// surrogate pair?
for (sequence = gxUTF8Sequences; sequence->size; sequence++)
if (value <= sequence->lmask)
break;
size += sequence->size;
c = (++p < q) ? *p : 0;
break;
default:
mxSyntaxError("invalid character in string");
break;
}
}
else {
size++;
c = (++p < q) ? *p : 0;
}
}
{
txSize after = p - r;
txSize before = s - r;
string = theParser->string->value.string = (txString)fxNewChunk(the, size + 1);
r = (theParser->data) ? theParser->data : theParser->slot->value.string;
p = r + after;
q = r + theParser->size;
s = r + before;
}
if (escaped) {
p = s;
c = *p;
for (;;) {
if (c == '"') {
break;
}
else if (c == '\\') {
p++; c = *p;
switch (c) {
case '"':
case '/':
case '\\':
*string++ = c;
p++; c = *p;
break;
case 'b':
*string++ = '\b';
p++; c = *p;
break;
case 'f':
*string++ = '\f';
p++; c = *p;
break;
case 'n':
*string++ = '\n';
p++; c = *p;
break;
case 'r':
*string++ = '\r';
p++; c = *p;
break;
case 't':
*string++ = '\t';
p++; c = *p;
break;
case 'u':
value = 0;
for (i = 0; i < 4; i++) {
p++; c = *p;
if (('0' <= c) && (c <= '9'))
value = (value * 16) + (c - '0');
else if (('a' <= c) && (c <= 'f'))
value = (value * 16) + (10 + c - 'a');
else
value = (value * 16) + (10 + c - 'A');
}
// surrogate pair?
string = (txString)fsX2UTF8(value, (txU1*)string, 0x7FFFFFFF);
p++; c = *p;
break;
}
}
else {
*string++ = c;
p++; c = *p;
}
}
*string = 0;
}
else {
c_memcpy(string, s, size);
string[size] = 0;
}
p++;
theParser->token = XS_JSON_TOKEN_STRING;
break;
default:
if ((q - p >= 5) && (!c_strncmp(p, "false", 5))) {
p += 5;
theParser->token = XS_JSON_TOKEN_FALSE;
}
else if ((q - p >= 4) && (!c_strncmp(p, "null", 4))) {
p += 4;
theParser->token = XS_JSON_TOKEN_NULL;
}
else if ((q - p >= 4) && (!c_strncmp(p, "true", 4))) {
p += 4;
theParser->token = XS_JSON_TOKEN_TRUE;
}
else
mxSyntaxError("invalid character");
break;
}
}
theParser->offset = p - r;
}
void fxNewInstanceOf(txMachine* the)
{
txSlot* aParent;
if (the->stack->kind == XS_NULL_KIND) {
txSlot* instance = fxNewSlot(the);
instance->kind = XS_INSTANCE_KIND;
instance->value.instance.garbage = C_NULL;
instance->value.instance.prototype = C_NULL;
the->stack->value.reference = instance;
the->stack->kind = XS_REFERENCE_KIND;
}
else {
fxToInstance(the, the->stack);
aParent = fxGetInstance(the, the->stack);
if (aParent->flag & XS_VALUE_FLAG) {
switch (aParent->next->kind) {
case XS_CALLBACK_KIND:
case XS_CODE_KIND:
fxNewFunctionInstance(the, XS_NO_ID);
break;
case XS_ARRAY_KIND:
fxNewArrayInstance(the);
break;
case XS_STRING_KIND:
case XS_STRING_X_KIND:
fxNewStringInstance(the);
break;
case XS_BOOLEAN_KIND:
fxNewBooleanInstance(the);
break;
case XS_NUMBER_KIND:
fxNewNumberInstance(the);
break;
case XS_DATE_KIND:
fxNewDateInstance(the);
break;
case XS_REGEXP_KIND:
fxNewRegExpInstance(the);
break;
case XS_SYMBOL_KIND:
fxNewSymbolInstance(the);
break;
case XS_HOST_KIND:
fxNewHostInstance(the);
break;
case XS_PROMISE_KIND:
fxNewPromiseInstance(the);
break;
case XS_PROXY_KIND:
fxNewProxyInstance(the);
break;
case XS_MAP_KIND:
fxNewMapInstance(the);
break;
case XS_SET_KIND:
fxNewSetInstance(the);
break;
case XS_WEAK_MAP_KIND:
fxNewWeakMapInstance(the);
break;
case XS_WEAK_SET_KIND:
fxNewWeakSetInstance(the);
break;
case XS_ARRAY_BUFFER_KIND:
fxNewArrayBufferInstance(the);
break;
case XS_DATA_VIEW_KIND:
fxNewDataViewInstance(the);
break;
case XS_TYPED_ARRAY_KIND:
fxNewTypedArrayInstance(the, aParent->next->value.typedArray);
break;
case XS_STACK_KIND:
fxNewGeneratorInstance(the);
break;
default:
mxSyntaxError("C: xsNewInstanceOf: invalid prototype");
break;
}
}
else
fxNewObjectInstance(the);
}
}
