Add htmlparser, conditional variables, make alloc_threshold overridable in prefs.json

.vscode/launch.json

@@ -8,8 +8,11 @@
             "name": "(gdb) Launch",
             "type": "cppdbg",
             "request": "launch",
-            "program": "${workspaceFolder}/builds/l/crossint",
+            "program": "${workspaceFolder}/build/crosslang",
-            "args": ["queryable.tcross"],
+            "args": [
+                "webapp",
+                "tytd2025"
+            ],
             "stopAtEntry": false,
             "cwd": "${workspaceFolder}/builds/l",
             "environment": [],
@@ -28,6 +31,5 @@
                 }
             ]
         }
-
     ]
 }

src/runtime_methods/helpers.cpp

@@ -1,3 +1,23 @@
+/*
+    CrossLang is a dynamically-typed scripting language built on
+   TessesFramework, named in honor of Jesus's sacrifice.
+
+    Copyright (C) 2026 Mike Nolan
+    SPDX-License-Identifier: GPL-3.0-or-later WITH TessesFramework-Exception-1.0
+
+    This program 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.
+
+    This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 #include "CrossLang.hpp"
 
 namespace Tesses::CrossLang {

src/vm/gc.cpp

@@ -179,6 +179,8 @@ void GC::BarrierEnd() { this->mtx.Unlock(); }
 void GC::Watch(TObject obj) {
     if (std::holds_alternative<THeapObject *>(obj)) {
         auto _item = std::get<THeapObject *>(obj);
+        if (_item == nullptr)
+            return;
         this->BarrierBegin();
         this->objects.insert(_item);
         auto nowAllocs = ++this->allocs;
@@ -190,12 +192,15 @@ void GC::Watch(TObject obj) {
 void GC::Mark(TObject obj) {
     if (std::holds_alternative<THeapObject *>(obj)) {
         auto _item = std::get<THeapObject *>(obj);
-        _item->Mark();
+        if (_item)
+            _item->Mark();
     }
 }
 void GC::Unwatch(TObject obj) {
     if (std::holds_alternative<THeapObject *>(obj)) {
         auto _item = std::get<THeapObject *>(obj);
+        if (_item == nullptr)
+            return;
         this->BarrierBegin();
         this->objects.erase(_item);
         this->BarrierEnd();

src/vm/gclist.cpp

@@ -32,6 +32,8 @@ std::shared_ptr<GC> GCList::GetGC() const { return this->gc; }
 void GCList::Remove(TObject obj) {
     if (std::holds_alternative<THeapObject *>(obj)) {
         auto _item = std::get<THeapObject *>(obj);
+        if (_item == nullptr)
+            return;
         this->gc->BarrierBegin();
         for (auto index = this->items.begin(); index != this->items.end();
              index++) {
@@ -47,6 +49,8 @@ void GCList::Add(TObject obj) {
 
     if (std::holds_alternative<THeapObject *>(obj)) {
         auto _item = std::get<THeapObject *>(obj);
+        if (_item == nullptr)
+            return;
         this->gc->BarrierBegin();
 
         for (auto item : this->items) {