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xslSlot.c
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/*
* Copyright (c) 2016-2018 Moddable Tech, Inc.
*
* This file is part of the Moddable SDK Tools.
*
* The Moddable SDK Tools is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The Moddable SDK Tools is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the Moddable SDK Tools. If not, see <http://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright (C) 2010-2016 Marvell International Ltd.
* Copyright (C) 2002-2010 Kinoma, Inc.
*
* 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.
*/
#include "xsl.h"
typedef struct sxAliasIDLink txAliasIDLink;
typedef struct sxAliasIDList txAliasIDList;
struct sxAliasIDLink {
txAliasIDLink* previous;
txAliasIDLink* next;
txInteger id;
txInteger flag;
};
struct sxAliasIDList {
txAliasIDLink* first;
txAliasIDLink* last;
txFlag* aliases;
txInteger errorCount;
};
static void fxCheckAliasesError(txMachine* the, txAliasIDList* list, txFlag flag);
static void fxCheckEnvironmentAliases(txMachine* the, txSlot* environment, txAliasIDList* list);
static void fxCheckInstanceAliases(txMachine* the, txSlot* instance, txAliasIDList* list);
static void fxCheckPropertyAliases(txMachine* the, txSlot* property, txAliasIDList* list);
static txString fxGetBuilderName(txMachine* the, const txHostFunctionBuilder* which);
static txString fxGetCallbackName(txMachine* the, txCallback callback);
static txString fxGetCodeName(txMachine* the, txByte* which);
static txInteger fxGetTypeDispatchIndex(txTypeDispatch* dispatch);
static void fxPrepareInstance(txMachine* the, txSlot* instance);
static void fxPrintAddress(txMachine* the, FILE* file, txSlot* slot);
static void fxPrintID(txMachine* the, FILE* file, txID id);
static void fxPrintNumber(txMachine* the, FILE* file, txNumber value);
static void fxPrintSlot(txMachine* the, FILE* file, txSlot* slot, txFlag flag);
enum {
XSL_MODULE_FLAG,
XSL_EXPORT_FLAG,
XSL_ENVIRONMENT_FLAG,
XSL_PROPERTY_FLAG,
XSL_ITEM_FLAG,
XSL_GETTER_FLAG,
XSL_SETTER_FLAG,
XSL_PROXY_HANDLER_FLAG,
XSL_PROXY_TARGET_FLAG,
XSL_GLOBAL_FLAG,
};
#define mxPushLink(name,ID,FLAG) \
txAliasIDLink name = { C_NULL, C_NULL, ID, FLAG }; \
name.previous = list->last; \
if (list->last) \
list->last->next = &name; \
else \
list->first = &name; \
list->last = &name
#define mxPopLink(name) \
if (name.previous) \
name.previous->next = C_NULL; \
else \
list->first = C_NULL; \
list->last = name.previous
#define mxRegExpSize(SLOT) \
(((txChunk*)(((txByte*)SLOT->value.regexp.code) - sizeof(txChunk)))->size / sizeof(txInteger))
txSlot* fxBuildHostConstructor(txMachine* the, txCallback call, txInteger length, txInteger id)
{
txLinker* linker = (txLinker*)(the->context);
fxNewLinkerBuilder(linker, call, length, id);
return fxNewHostConstructor(the, call, length, id);
}
txSlot* fxBuildHostFunction(txMachine* the, txCallback call, txInteger length, txInteger id)
{
txLinker* linker = (txLinker*)(the->context);
fxNewLinkerBuilder(linker, call, length, id);
return fxNewHostFunction(the, call, length, id, XS_NO_ID);
}
txInteger fxCheckAliases(txMachine* the)
{
txLinker* linker = xsGetContext(the);
txAliasIDList _list = { C_NULL, C_NULL }, *list = &_list;
txSlot* module = mxProgram.value.reference->next; //@@
list->aliases = fxNewLinkerChunkClear(linker, the->aliasCount * sizeof(txFlag));
while (module) {
txSlot* export = mxModuleExports(module)->value.reference->next;
if (export) {
mxPushLink(moduleLink, module->ID, XSL_MODULE_FLAG);
while (export) {
txSlot* closure = export->value.export.closure;
if (closure) {
mxPushLink(exportLink, export->ID, XSL_EXPORT_FLAG);
if (closure->ID != XS_NO_ID) {
if (list->aliases[closure->ID] == 0) {
list->aliases[closure->ID] = 1;
fxCheckAliasesError(the, list, 0);
}
}
if (closure->kind == XS_REFERENCE_KIND) {
fxCheckInstanceAliases(the, closure->value.reference, list);
}
mxPopLink(exportLink);
}
export = export->next;
}
mxPopLink(moduleLink);
}
module = module->next;
}
{
txSlot* global = mxGlobal.value.reference->next->next;
while (global) {
if ((global->ID != mxID(_global)) && (global->ID != mxID(_globalThis))) {
mxPushLink(globalLink, global->ID, XSL_GLOBAL_FLAG);
if (global->kind == XS_REFERENCE_KIND) {
fxCheckInstanceAliases(the, global->value.reference, list);
}
mxPopLink(globalLink);
}
global = global->next;
}
}
{
txSlot *heap, *slot, *limit;
heap = the->firstHeap;
while (heap) {
slot = heap + 1;
limit = heap->value.reference;
while (slot < limit) {
if (slot->kind == XS_INSTANCE_KIND)
slot->flag &= ~XS_LEVEL_FLAG;
slot++;
}
heap = heap->next;
}
}
return list->errorCount;
}
void fxCheckAliasesError(txMachine* the, txAliasIDList* list, txFlag flag)
{
txAliasIDLink* link = list->first;
if (flag > 1)
fprintf(stderr, "### error");
else
fprintf(stderr, "### warning");
while (link) {
switch (link->flag) {
case XSL_PROPERTY_FLAG: fprintf(stderr, "."); break;
case XSL_ITEM_FLAG: fprintf(stderr, "["); break;
case XSL_GETTER_FLAG: fprintf(stderr, ".get "); break;
case XSL_SETTER_FLAG: fprintf(stderr, ".set "); break;
case XSL_ENVIRONMENT_FLAG: fprintf(stderr, "() "); break;
case XSL_PROXY_HANDLER_FLAG: fprintf(stderr, ".(handler)"); break;
case XSL_PROXY_TARGET_FLAG: fprintf(stderr, ".(target)"); break;
default: fprintf(stderr, ": "); break;
}
if (link->flag == XSL_ITEM_FLAG) {
fprintf(stderr, "%d", link->id);
fprintf(stderr, "]");
}
else if (link->id != XS_NO_ID) {
char* string = fxGetKeyName(the, link->id);
if (string) {
if (link->flag == XSL_GLOBAL_FLAG) {
fprintf(stderr, "globalThis.");
fprintf(stderr, "%s", string);
}
else
fprintf(stderr, "%s", string);
}
else
fprintf(stderr, "%d", link->id);
}
else
fprintf(stderr, "%d", link->id);
link = link->next;
}
if (flag == 3) {
fprintf(stderr, ": generator\n");
list->errorCount++;
}
else if (flag == 2) {
fprintf(stderr, ": regexp\n");
list->errorCount++;
}
else if (flag)
fprintf(stderr, ": not frozen\n");
else
fprintf(stderr, ": no const\n");
}
void fxCheckEnvironmentAliases(txMachine* the, txSlot* environment, txAliasIDList* list)
{
txSlot* closure = environment->next;
if (environment->flag & XS_LEVEL_FLAG)
return;
environment->flag |= XS_LEVEL_FLAG;
if (environment->value.instance.prototype)
fxCheckEnvironmentAliases(the, environment->value.instance.prototype, list);
while (closure) {
if (closure->kind == XS_CLOSURE_KIND) {
txSlot* slot = closure->value.closure;
mxPushLink(closureLink, closure->ID, XSL_ENVIRONMENT_FLAG);
if (slot->ID != XS_NO_ID) {
if (list->aliases[slot->ID] == 0) {
list->aliases[slot->ID] = 1;
fxCheckAliasesError(the, list, 0);
}
}
if (slot->kind == XS_REFERENCE_KIND) {
fxCheckInstanceAliases(the, slot->value.reference, list);
}
mxPopLink(closureLink);
}
closure = closure->next;
}
//environment->flag &= ~XS_LEVEL_FLAG;
}
void fxCheckInstanceAliases(txMachine* the, txSlot* instance, txAliasIDList* list)
{
txSlot* property = instance->next;
if (instance->flag & XS_LEVEL_FLAG)
return;
instance->flag |= XS_LEVEL_FLAG;
if (instance->value.instance.prototype) {
mxPushLink(propertyLink, mxID(___proto__), XSL_PROPERTY_FLAG);
fxCheckInstanceAliases(the, instance->value.instance.prototype, list);
mxPopLink(propertyLink);
}
if (instance->ID != XS_NO_ID) {
if (list->aliases[instance->ID] == 0) {
list->aliases[instance->ID] = 1;
fxCheckAliasesError(the, list, 1);
}
}
while (property && (property->flag & XS_INTERNAL_FLAG)) {
if (property->kind == XS_ARRAY_KIND) {
txSlot* item = property->value.array.address;
txInteger length = (txInteger)fxGetIndexSize(the, property);
while (length > 0) {
mxPushLink(propertyLink, *((txInteger*)item), XSL_ITEM_FLAG);
fxCheckPropertyAliases(the, item, list);
mxPopLink(propertyLink);
item++;
length--;
}
}
else if ((property->kind == XS_CODE_KIND) || (property->kind == XS_CODE_X_KIND)) {
if (property->value.code.closures)
fxCheckEnvironmentAliases(the, property->value.code.closures, list);
}
else if (property->kind == XS_PRIVATE_KIND) {
txSlot* item = property->value.private.first;
while (item) {
mxPushLink(propertyLink, item->ID, XSL_PROPERTY_FLAG);
fxCheckPropertyAliases(the, item, list);
mxPopLink(propertyLink);
item = item->next;
}
}
else if (property->kind == XS_PROXY_KIND) {
if (property->value.proxy.handler) {
mxPushLink(propertyLink, XS_NO_ID, XSL_PROXY_HANDLER_FLAG);
fxCheckInstanceAliases(the, property->value.proxy.handler, list);
mxPopLink(propertyLink);
}
if (property->value.proxy.target) {
mxPushLink(propertyLink, XS_NO_ID, XSL_PROXY_TARGET_FLAG);
fxCheckInstanceAliases(the, property->value.proxy.target, list);
mxPopLink(propertyLink);
}
}
else if (property->kind == XS_STACK_KIND) {
fxCheckAliasesError(the, list, 3);
}
property = property->next;
}
while (property) {
mxPushLink(propertyLink, property->ID, XSL_PROPERTY_FLAG);
fxCheckPropertyAliases(the, property, list);
mxPopLink(propertyLink);
property = property->next;
}
}
void fxCheckPropertyAliases(txMachine* the, txSlot* property, txAliasIDList* list)
{
if (property->kind == XS_REFERENCE_KIND) {
fxCheckInstanceAliases(the, property->value.reference, list);
}
else if (property->kind == XS_ACCESSOR_KIND) {
if (property->value.accessor.getter) {
list->last->flag = XSL_GETTER_FLAG;
fxCheckInstanceAliases(the, property->value.accessor.getter, list);
}
if (property->value.accessor.setter) {
list->last->flag = XSL_SETTER_FLAG;
fxCheckInstanceAliases(the, property->value.accessor.setter, list);
}
}
}
txString fxGetBuilderName(txMachine* the, const txHostFunctionBuilder* which)
{
txLinker* linker = xsGetContext(the);
static char buffer[1024];
const txHostFunctionBuilder* builder;
{
txLinkerBuilder* linkerBuilder = linker->firstBuilder;
while (linkerBuilder) {
builder = &(linkerBuilder->host);
if (builder == which) {
sprintf(buffer, "&gxBuilders[%d]", linkerBuilder->builderIndex);
return buffer;
}
linkerBuilder = linkerBuilder->nextBuilder;
}
}
{
txLinkerScript* linkerScript = linker->firstScript;
while (linkerScript) {
txInteger count = linkerScript->hostsCount;
if (count) {
txInteger index;
for (builder = linkerScript->builders, index = 0; index < count; builder++, index++) {
if (builder == which) {
sprintf(buffer, "&gxBuilders%d[%d]", linkerScript->scriptIndex, index);
return buffer;
}
}
}
linkerScript = linkerScript->nextScript;
}
}
return "OOPS";
}
txString fxGetCallbackName(txMachine* the, txCallback which)
{
txLinker* linker = xsGetContext(the);
if (!which)
return "NULL";
{
txLinkerCallback* linkerCallback = fxGetLinkerCallbackByAddress(linker, which);
if (linkerCallback) {
if (linkerCallback->flag)
return linkerCallback->name;
return "fxDeadStrip";
}
}
{
txLinkerScript* linkerScript = linker->firstScript;
while (linkerScript) {
txInteger count = linkerScript->hostsCount;
if (count) {
txCallbackName* address = &(linkerScript->callbackNames[0]);
while (count) {
if (address->callback == which)
return address->name;
address++;
count--;
}
}
linkerScript = linkerScript->nextScript;
}
}
return "OOPS";
}
txString fxGetCodeName(txMachine* the, txByte* which)
{
if (which == gxNoCode)
return "(txByte*)(gxNoCode)";
{
static char buffer[1024];
txLinker* linker = xsGetContext(the);
txLinkerScript* linkerScript = linker->firstScript;
while (linkerScript) {
txS1* from = linkerScript->codeBuffer;
txS1* to = from + linkerScript->codeSize;
if ((from <= which) && (which < to)) {
sprintf(buffer, "(txByte*)(&gxCode%d[%ld])", linkerScript->scriptIndex, (long)(which - from));
return buffer;
}
linkerScript = linkerScript->nextScript;
}
}
return "OOPS";
}
extern const txTypeDispatch gxTypeDispatches[];
txInteger fxGetTypeDispatchIndex(txTypeDispatch* dispatch)
{
txInteger i = 0;
while (i < mxTypeArrayCount) {
if (dispatch == &gxTypeDispatches[i])
return i;
i++;
}
fprintf(stderr, "dispatch %p %p\n", dispatch, &gxTypeDispatches[0]);
return -1;
}
extern const txTypeAtomics gxTypeAtomics[];
txInteger fxGetTypeAtomicsIndex(txTypeAtomics* atomics)
{
txInteger i = 0;
while (i < mxTypeArrayCount) {
if (atomics == &gxTypeAtomics[i])
return i;
i++;
}
fprintf(stderr, "atomics %p %p\n", atomics, &gxTypeAtomics[0]);
return -1;
}
void fxLinkerScriptCallback(txMachine* the)
{
txLinker* linker = xsGetContext(the);
txSlot* slot = mxModuleInternal(mxThis);
txSlot* key = fxGetKey(the, slot->value.module.id);
txString path = key->value.key.string;
txLinkerScript* linkerScript = linker->firstScript;
mxPush(mxArrayPrototype);
fxNewArrayInstance(the);
fxArrayCacheBegin(the, the->stack);
while (linkerScript) {
if (!c_strcmp(linkerScript->path, path)) {
txByte* p = linkerScript->hostsBuffer;
if (p) {
txID c, i, id;
mxDecode2(p, c);
linkerScript->builders = fxNewLinkerChunk(linker, c * sizeof(txHostFunctionBuilder));
linkerScript->callbackNames = fxNewLinkerChunk(linker, c * sizeof(txCallbackName));
linkerScript->hostsCount = c;
for (i = 0; i < c; i++) {
txCallback callback = the->fakeCallback;
txHostFunctionBuilder* builder = &linkerScript->builders[i];
txCallbackName* callbackName = &linkerScript->callbackNames[i];
txS1 length = *p++;
the->fakeCallback = (txCallback)(((txU1*)the->fakeCallback) + 1);
mxDecode2(p, id);
builder->callback = callback;
builder->length = length;
builder->id = id;
callbackName->callback = callback;
callbackName->name = (char*)p;
if (length < 0) {
fxNewHostObject(the, (txDestructor)callback);
}
else {
mxPushUndefined();
the->stack->kind = XS_HOST_FUNCTION_KIND;
the->stack->value.hostFunction.builder = builder;
the->stack->value.hostFunction.profileID = fxGenerateProfileID(the);
}
fxArrayCacheItem(the, the->stack + 1, the->stack);
mxPop();
p += mxStringLength((char*)p) + 1;
}
}
break;
}
linkerScript = linkerScript->nextScript;
}
fxArrayCacheEnd(the, the->stack);
mxPullSlot(mxResult);
mxPop();
}
txSlot* fxNewFunctionLength(txMachine* the, txSlot* instance, txNumber length)
{
txLinker* linker = (txLinker*)(the->context);
txSlot* property;
if (linker->stripFlag)
return C_NULL;
property = mxBehaviorGetProperty(the, instance, mxID(_length), 0, XS_OWN);
if (!property)
property = fxNextIntegerProperty(the, fxLastProperty(the, instance), 0, mxID(_length), XS_DONT_ENUM_FLAG | XS_DONT_SET_FLAG);
if (length <= 0x7FFFFFFF) {
property->kind = XS_INTEGER_KIND;
property->value.integer = (txInteger)length;
}
else {
property->kind = XS_NUMBER_KIND;
property->value.number = length;
}
return property;
}
txSlot* fxNewFunctionName(txMachine* the, txSlot* instance, txID id, txIndex index, txID former, txString prefix)
{
txLinker* linker = (txLinker*)(the->context);
txSlot* property;
if (linker->stripFlag)
return C_NULL;
property = mxBehaviorGetProperty(the, instance, mxID(_name), 0, XS_OWN);
if (property) {
if ((property->kind != mxEmptyString.kind) || (property->value.string != mxEmptyString.value.string))
return property;
}
else
property = fxNextSlotProperty(the, fxLastProperty(the, instance), &mxEmptyString, mxID(_name), XS_DONT_ENUM_FLAG | XS_DONT_SET_FLAG);
if (id != XS_NO_ID) {
txBoolean adorn;
fxPushKeyString(the, id, &adorn);
mxPullSlot(property);
if (adorn)
fxAdornStringC(the, "[", property, "]");
}
else if (former) {
char buffer[16];
fxCopyStringC(the, property, fxNumberToString(the, index, buffer, sizeof(buffer), 0, 0));
}
if (prefix)
fxAdornStringC(the, prefix, property, C_NULL);
return property;
}
txSlot* fxNextHostAccessorProperty(txMachine* the, txSlot* property, txCallback get, txCallback set, txID id, txFlag flag)
{
txLinker* linker = (txLinker*)(the->context);
txSlot *getter = NULL, *setter = NULL, *home = the->stack, *slot;
if (get) {
fxNewLinkerBuilder(linker, get, 0, id);
getter = fxNewHostFunction(the, get, 0, XS_NO_ID, XS_NO_ID);
slot = mxFunctionInstanceHome(getter);
slot->value.home.object = home->value.reference;
fxRenameFunction(the, getter, id, 0, XS_NO_ID, "get ");
}
if (set) {
fxNewLinkerBuilder(linker, set, 1, id);
setter = fxNewHostFunction(the, set, 1, XS_NO_ID, XS_NO_ID);
slot = mxFunctionInstanceHome(setter);
slot->value.home.object = home->value.reference;
fxRenameFunction(the, setter, id, 0, XS_NO_ID, "set ");
}
property = property->next = fxNewSlot(the);
property->flag = flag;
property->ID = id;
property->kind = XS_ACCESSOR_KIND;
property->value.accessor.getter = getter;
property->value.accessor.setter = setter;
if (set)
mxPop();
if (get)
mxPop();
return property;
}
txSlot* fxNextHostFunctionProperty(txMachine* the, txSlot* property, txCallback call, txInteger length, txID id, txFlag flag)
{
property = property->next = fxNewSlot(the);
property->flag = flag;
property->ID = id;
fxSetHostFunctionProperty(the, property, call, length, id);
return property;
}
void fxPetrifyInstance(txMachine* the, txSlot* instance)
{
txSlot* property = instance->next;
txSlot* private;
while (property && (property->flag & XS_INTERNAL_FLAG)) {
switch (property->kind) {
case XS_ARRAY_BUFFER_KIND:
case XS_DATE_KIND:
case XS_MAP_KIND:
case XS_REGEXP_KIND:
case XS_SET_KIND:
case XS_WEAK_MAP_KIND:
case XS_WEAK_SET_KIND:
property->flag |= XS_DONT_SET_FLAG;
break;
case XS_PRIVATE_KIND:
private = property->value.private.first;
while (private) {
if (private->kind != XS_ACCESSOR_KIND)
private->flag |= XS_DONT_SET_FLAG;
private->flag |= XS_DONT_DELETE_FLAG;
private = private->next;
}
break;
}
property = property->next;
}
}
void fxPrepareInstance(txMachine* the, txSlot* instance)
{
txLinker* linker = (txLinker*)(the->context);
if (linker->freezeFlag) {
txSlot *property = instance->next;
while (property) {
if (property->kind != XS_ACCESSOR_KIND)
property->flag |= XS_DONT_SET_FLAG;
property->flag |= XS_DONT_DELETE_FLAG;
property = property->next;
}
instance->flag |= XS_DONT_PATCH_FLAG;
}
}
txInteger fxPrepareHeap(txMachine* the)
{
txLinker* linker = (txLinker*)(the->context);
txID aliasCount = 1;
txInteger index = linker->projectionIndex;
txSlot *heap, *slot, *limit, *item;
txLinkerProjection* projection;
slot = the->freeHeap;
while (slot) {
slot->flag |= XS_MARK_FLAG;
slot = slot->next;
}
heap = the->firstHeap;
projection = linker->firstProjection;
while (heap) {
slot = heap + 1;
limit = heap->value.reference;
while (slot < limit) {
if (!(slot->flag & XS_MARK_FLAG)) {
if (projection->indexes[slot - heap] == 0) {
projection->indexes[slot - heap] = index;
index++;
}
if ((slot->kind == XS_ARRAY_KIND) && ((item = slot->value.array.address))) {
index++; // fake chunk
index += (txInteger)fxGetIndexSize(the, slot);
}
else if (slot->kind == XS_BIGINT_KIND) {
linker->bigintSize += slot->value.bigint.size;
}
else if (slot->kind == XS_REGEXP_KIND) {
linker->regexpSize += mxRegExpSize(slot);
}
else if (slot->kind == XS_INSTANCE_KIND) {
txSlot *property = slot->next;
if (property && (property->flag & XS_INTERNAL_FLAG)) {
// @@ freeze environments
if (property->ID == XS_ENVIRONMENT_BEHAVIOR)
fxPrepareInstance(the, slot);
// @@ freeze functions and prototypes
else if ((property->kind == XS_CALLBACK_KIND) || (property->kind == XS_CALLBACK_X_KIND) || (property->kind == XS_CODE_KIND) || (property->kind == XS_CODE_X_KIND)) {
fxPrepareInstance(the, slot);
if (linker->freezeFlag) {
if (slot->flag & XS_CAN_CONSTRUCT_FLAG) {
property = property->next;
while (property) {
if ((property->ID == mxID(_prototype)) && (property->kind == XS_REFERENCE_KIND)) {
fxPrepareInstance(the, property->value.reference);
break;
}
property = property->next;
}
}
}
}
// @@ freeze instances that cannot be aliased yet
else if ((property->kind == XS_MAP_KIND) || (property->kind == XS_SET_KIND)) {
fxPrepareInstance(the, slot);
linker->slotSize += property->value.table.length;
}
else if ((property->kind == XS_WEAK_MAP_KIND) || (property->kind == XS_WEAK_SET_KIND))
fxPrepareInstance(the, slot);
else if (property->kind == XS_WEAK_REF_KIND)
fxPrepareInstance(the, slot);
else if ((property->kind == XS_CLOSURE_KIND) && (property->value.closure->kind == XS_FINALIZATION_REGISTRY_KIND))
fxPrepareInstance(the, slot);
else if (property->kind == XS_ARRAY_BUFFER_KIND)
fxPrepareInstance(the, slot);
else if (property->kind == XS_DATA_VIEW_KIND)
fxPrepareInstance(the, slot);
else if (property->kind == XS_TYPED_ARRAY_KIND)
fxPrepareInstance(the, slot);
else if (property->kind == XS_PROMISE_KIND) {
fxPrepareInstance(the, slot);
property = property->next;
fxPrepareInstance(the, property->value.reference); // thens
}
else if (property->kind == XS_PROXY_KIND)
fxPrepareInstance(the, slot);
else if (property->kind == XS_REGEXP_KIND)
fxPrepareInstance(the, slot);
}
}
}
slot++;
}
heap = heap->next;
projection = projection->nextProjection;
}
index++;
heap = the->firstHeap;
while (heap) {
slot = heap + 1;
limit = heap->value.reference;
while (slot < limit) {
if (!(slot->flag & XS_MARK_FLAG)) {
if (slot->kind == XS_INSTANCE_KIND) {
txBoolean frozen = (slot->flag & XS_DONT_PATCH_FLAG) ? 1 : 0;
if (frozen) {
txSlot *property = slot->next;
while (property && (property->flag & XS_INTERNAL_FLAG)) {
if (property->kind == XS_ARRAY_KIND) {
txSlot* item = property->value.array.address;
txInteger length = (txInteger)fxGetIndexSize(the, property);
while (length > 0) {
if (item->kind != XS_ACCESSOR_KIND)
if (!(item->flag & XS_DONT_SET_FLAG))
frozen = 0;
if (!(item->flag & XS_DONT_DELETE_FLAG))
frozen = 0;
item++;
length--;
}
}
property = property->next;
}
while (property) {
if (property->kind != XS_ACCESSOR_KIND)
if (!(property->flag & XS_DONT_SET_FLAG))
frozen = 0;
if (!(property->flag & XS_DONT_DELETE_FLAG))
frozen = 0;
property = property->next;
}
}
if (frozen) {
slot->ID = XS_NO_ID;
fxPetrifyInstance(the, slot);
}
else
slot->ID = aliasCount++;
}
}
slot++;
}
heap = heap->next;
}
heap = the->firstHeap;
while (heap) {
slot = heap + 1;
limit = heap->value.reference;
while (slot < limit) {
if (!(slot->flag & XS_MARK_FLAG)) {
if (slot->kind == XS_CLOSURE_KIND) {
txSlot* closure = slot->value.closure;
if (linker->freezeFlag) {
// @@ const functions closures
if (closure->kind == XS_REFERENCE_KIND) {
txSlot* internal = closure->value.reference->next;
if (internal && ((internal->kind == XS_CALLBACK_KIND) || (internal->kind == XS_CALLBACK_X_KIND) || (internal->kind == XS_CODE_KIND) || (internal->kind == XS_CODE_X_KIND))) {
closure->flag |= XS_DONT_SET_FLAG;
}
}
else if (closure->kind == XS_HOST_FUNCTION_KIND) {
closure->flag |= XS_DONT_SET_FLAG;
}
}
if (closure->flag & XS_DONT_SET_FLAG) {
if (closure->ID != XS_NO_ID)
closure->flag |= XS_DONT_DELETE_FLAG;
}
else {
if (closure->ID == XS_NO_ID)
closure->ID = aliasCount++;
slot->flag &= ~XS_DONT_SET_FLAG; // ??
}
}
}
slot++;
}
heap = heap->next;
}
the->aliasCount = aliasCount;
return index;
}
void fxPrepareHome(txMachine* the)
{
txSlot *heap, *slot, *limit;
txSlot* home = NULL;
heap = the->firstHeap;
while (heap) {
slot = heap + 1;
limit = heap->value.reference;
while (slot < limit) {
txSlot* next = slot->next;
if (next && (next->next == NULL) && (next->ID == XS_NO_ID) && (next->kind == XS_HOME_KIND)) {
if (home && (home->flag == next->flag) && (home->value.home.object == next->value.home.object) && (home->value.home.module == next->value.home.module))
slot->next = home;
else
home = next;
}
slot++;
}
heap = heap->next;
}
xsCollectGarbage();
}
void fxPrepareProjection(txMachine* the)
{
txLinker* linker = (txLinker*)(the->context);
txLinkerProjection** projectionAddress = &linker->firstProjection;
txLinkerProjection* projection;
txSlot* heap = the->firstHeap;
while (heap) {
txSlot* slot = heap + 1;
txSlot* limit = heap->value.reference;
projection = fxNewLinkerChunkClear(linker, sizeof(txLinkerProjection) + (mxPtrDiff(limit - slot) * sizeof(txInteger)));
projection->heap = heap;
projection->limit = limit;
*projectionAddress = projection;
projectionAddress = &projection->nextProjection;
heap = heap->next;
}
linker->projectionIndex = 1;
}
void fxPrintAddress(txMachine* the, FILE* file, txSlot* slot)
{
if (slot) {
txLinker* linker = (txLinker*)(the->context);
txLinkerProjection* projection = linker->firstProjection;
while (projection) {
if ((projection->heap < slot) && (slot < projection->limit)) {
fprintf(file, "(txSlot*)&gxHeap[%d]", (int)projection->indexes[slot - projection->heap]);
return;
}
projection = projection->nextProjection;
}
fprintf(file, "OOPS");
}
else
fprintf(file, "NULL");
}
void fxPrintBuilders(txMachine* the, FILE* file)
{
txLinker* linker = (txLinker*)(the->context);
txLinkerBuilder* linkerBuilder = linker->firstBuilder;
fprintf(file, "static const xsHostBuilder gxBuilders[%d] = {\n", linker->builderCount);
while (linkerBuilder) {
txString name = fxGetCallbackName(the, linkerBuilder->host.callback);
fprintf(file, "\t{ %s, %d, ", name, linkerBuilder->host.length);
fxPrintID(the, file, linkerBuilder->host.id);
fprintf(file, " },\n");
linkerBuilder = linkerBuilder->nextBuilder;
}
fprintf(file, "};\n\n");
}
void fxPrintHeap(txMachine* the, FILE* file, txInteger count)
{
txLinker* linker = (txLinker*)(the->context);
txLinkerProjection* projection = linker->firstProjection;
txSlot *slot, *limit, *item;
txInteger index = 0;
fprintf(file, "/* %.4d */", index);
fprintf(file, "\t{ NULL, {.ID = XS_NO_ID, .flag = XS_NO_FLAG, .kind = XS_REFERENCE_KIND}, ");
fprintf(file, ".value = { .reference = (txSlot*)&gxHeap[%d] } },\n", (int)count);
index++;
while (index < linker->projectionIndex) {
fprintf(file, "/* %.4d */", index);
slot = linker->layout[index];
if (slot)
fxPrintSlot(the, file, slot, XS_MARK_FLAG);
else
fprintf(file, "\t{ NULL, {.ID = XS_NO_ID, .flag = XS_NO_FLAG, .kind = XS_UNINITIALIZED_KIND }, .value = { .number = 0 } },\n");
index++;
}
while (projection) {
slot = projection->heap + 1;
limit = projection->limit;
while (slot < limit) {
if (!(slot->flag & XS_MARK_FLAG)) {
if ((slot->kind == XS_ARRAY_KIND) && ((item = slot->value.array.address))) {
fprintf(file, "/* %.4d */", index);
index++;
txInteger size = (txInteger)fxGetIndexSize(the, slot);
fprintf(file, "\t{ ");
fxPrintAddress(the, file, slot->next);
fprintf(file, ", {.ID = %d", slot->ID);
fprintf(file, ", .flag = 0x%x", slot->flag | XS_MARK_FLAG);
fprintf(file, ", .kind = XS_ARRAY_KIND}, .value = { .array = { (txSlot*)&gxHeap[%d], %d } }},\n", (int)index + 1, (int)slot->value.array.length);
fprintf(file, "/* %.4d */", index);
index++;
fprintf(file, "\t{ NULL, {.ID = XS_NO_ID, .flag = 0x80, .kind = XS_INTEGER_KIND}, .value = { .integer = %d * sizeof(txSlot) } },\n", (int)size); // fake chunk
while (size) {
fprintf(file, "/* %.4d */", index);
index++;
fxPrintSlot(the, file, item, XS_MARK_FLAG | XS_DEBUG_FLAG);
item++;
size--;
}
}
else if (projection->indexes[slot - projection->heap] >= linker->projectionIndex) {
fprintf(file, "/* %.4d */", index);
index++;
fxPrintSlot(the, file, slot, XS_MARK_FLAG);
}
}
slot++;
}
projection = projection->nextProjection;
}
fprintf(file, "/* %.4d */", index);
fprintf(file, "\t{ NULL, {.ID = XS_NO_ID, .flag = XS_NO_FLAG, .kind = XS_REFERENCE_KIND}, ");
fprintf(file, ".value = { .reference = NULL } }");
}
void fxPrintID(txMachine* the, FILE* file, txID id)
{
txLinker* linker = (txLinker*)(the->context);
if (id == XS_NO_ID)
fprintf(file, "XS_NO_ID");
else {
txLinkerSymbol* linkerSymbol = linker->symbolArray[id];
if (linkerSymbol) {
if (fxIsCIdentifier(linker, linkerSymbol->string))
fprintf(file, "xsID_%s", linkerSymbol->string);
else
fprintf(file, "%d /* %s */", id, linkerSymbol->string);
}
else {
char* string = fxGetKeyName(the, id);
if (string)
fprintf(file, "%d /* %s */", id, string);
else
fprintf(file, "%d /* ? */", id);
}
}
}
void fxPrintNumber(txMachine* the, FILE* file, txNumber value)
{
switch (c_fpclassify(value)) {
case C_FP_INFINITE:
if (value < 0)
fprintf(file, "-C_INFINITY");
else
fprintf(file, "C_INFINITY");
break;
case C_FP_NAN:
fprintf(file, "C_NAN");
break;
default:
fprintf(file, "%.20e", value);