Fix various interrogate issues with parsing PhysX headers

dtool/src/cppparser/cppBison.yxx

@@ -495,17 +495,21 @@ declaration:
   CPPDeclaration *getter = $5->find_symbol(current_scope, global_scope, current_lexer);
   if (getter == (CPPDeclaration *)NULL || getter->get_subtype() != CPPDeclaration::ST_function_group) {
     yyerror("Reference to non-existent or invalid getter: " + $5->get_fully_scoped_name(), @1);
-  }
 
-  CPPDeclaration *setter = $7->find_symbol(current_scope, global_scope, current_lexer);
-  if (setter == (CPPDeclaration *)NULL || setter->get_subtype() != CPPDeclaration::ST_function_group) {
-    yyerror("Reference to non-existent or invalid setter: " + $7->get_fully_scoped_name(), @1);
-  }
+  } else {
+    CPPDeclaration *setter = $7->find_symbol(current_scope, global_scope, current_lexer);
+    CPPFunctionGroup *setter_func = NULL;
 
-  CPPMakeProperty *make_property = new CPPMakeProperty($3, getter->as_function_group(),
-                                                           setter->as_function_group(),
-                                                           current_scope, @1.file);
-  current_scope->add_declaration(make_property, global_scope, current_lexer, @1);
+    if (setter == (CPPDeclaration *)NULL || setter->get_subtype() != CPPDeclaration::ST_function_group) {
+      yyerror("Reference to non-existent or invalid setter: " + $7->get_fully_scoped_name(), @1);
+    } else {
+      setter_func = setter->as_function_group();
+    }
+
+    CPPMakeProperty *make_property = new CPPMakeProperty($3, getter->as_function_group(),
+                                                         setter_func, current_scope, @1.file);
+    current_scope->add_declaration(make_property, global_scope, current_lexer, @1);
+  }
 }
          | KW_MAKE_SEQ '(' name ',' name ',' name ')' ';'
 {
@@ -1662,6 +1666,24 @@ type_decl:
 }
         | enum_keyword name ':' enum_element_type
 {
+  CPPType *type = $2->find_type(current_scope, global_scope, false, current_lexer);
+  if (type != NULL) {
+    $$ = type;
+  } else {
+    CPPExtensionType *et =
+      CPPType::new_type(new CPPExtensionType($1, $2, current_scope, @1.file))
+      ->as_extension_type();
+    CPPScope *scope = $2->get_scope(current_scope, global_scope);
+    if (scope != NULL) {
+      scope->define_extension_type(et);
+    }
+    $$ = et;
+  }
+}
+        | enum_keyword name
+{
+  yywarning(string("C++ does not permit forward declaration of untyped enum ") + $2->get_fully_scoped_name(), @1);
+
   CPPType *type = $2->find_type(current_scope, global_scope, false, current_lexer);
   if (type != NULL) {
     $$ = type;

dtool/src/cppparser/cppPreprocessor.cxx

@@ -200,7 +200,7 @@ CPPPreprocessor() {
 
   _warning_count = 0;
   _error_count = 0;
-  _error_abort = true;
+  _error_abort = false;
 #ifdef CPP_VERBOSE_LEX
   _token_index = 0;
 #endif

panda/src/physx/physx_includes.h

@@ -50,6 +50,7 @@
 
 
 // PhysX headers
+#include "Nxp.h"
 #include "NxPhysics.h"
 #include "NxExtended.h"
 #include "NxStream.h"

panda/src/pnmimage/pnmimage_base.h

@@ -46,9 +46,6 @@ PUBLISHED:
   static int size() { return 3; }
   gray operator [](int i) const { nassertr(i >= 0 && i < 3, 0); return *(&r + i); }
   gray &operator [](int i) { nassertr(i >= 0 && i < 3, r); return *(&r + i); }
-#ifdef HAVE_PYTHON
-  void __setitem__(int i, gray v) { operator[](i) = v; }
-#endif
   pixel operator + (const pixel &other) const
     { return pixel(r + other.r, g + other.g, b + other.b); }
   pixel operator - (const pixel &other) const