Work around strange interrogate issues

dtool/src/cppparser/cppExpression.cxx

@@ -617,23 +617,39 @@ evaluate() const {
       // long as we can evaluate the second one *and* that comes out
       // to be true.
       if (_u._op._operator == OROR && r2._type == RT_integer &&
-          r2.as_integer() != 0) {
+          r2.as_boolean()) {
         return r2;
       }
 
       // Ditto for the operator being && and the second one coming out
       // false.
       if (_u._op._operator == ANDAND && r2._type == RT_integer &&
-          r2.as_integer() == 0) {
+          !r2.as_boolean()) {
         return r2;
       }
 
+      // Also for the operator being [] and the operand being a string.
+      if (_u._op._operator == '[' && r2._type == RT_integer &&
+          (_u._op._op1->_type == T_string ||
+           _u._op._op1->_type == T_u8string)) {
+
+        int index = r2.as_integer();
+        if (index == _u._op._op1->_str.size()) {
+          return Result(0);
+        } else if (index >= 0 && index < _u._op._op1->_str.size()) {
+          return Result(_u._op._op1->_str[index]);
+        } else {
+          cerr << "array index " << index << " out of bounds of string literal "
+               << *_u._op._op1 << "\n";
+        }
+      }
+
       return r1;
     }
 
     switch (_u._op._operator) {
     case UNARY_NOT:
-      return Result(!r1.as_integer());
+      return Result(!r1.as_boolean());
 
     case UNARY_NEGATE:
       return Result(~r1.as_integer());
@@ -683,14 +699,14 @@ evaluate() const {
       return Result(r1.as_integer() & r2.as_integer());
 
     case OROR:
-      if (r1.as_integer()) {
+      if (r1.as_boolean()) {
         return r1;
       } else {
         return r2;
       }
 
     case ANDAND:
-      if (r1.as_integer()) {
+      if (r1.as_boolean()) {
         return r2;
       } else {
         return r1;

dtool/src/cppparser/cppPreprocessor.cxx

@@ -904,7 +904,7 @@ expand_manifests(const string &input_expr, bool expand_undefined) {
 CPPExpression *CPPPreprocessor::
 parse_expr(const string &input_expr, CPPScope *current_scope,
            CPPScope *global_scope) {
-  string expr = expand_manifests(input_expr, true);
+  string expr = expand_manifests(input_expr, false);
 
   CPPExpressionParser ep(current_scope, global_scope);
   ep._verbose = 0;
@@ -1552,15 +1552,18 @@ handle_ifndef_directive(const string &args, const YYLTYPE &loc) {
 ////////////////////////////////////////////////////////////////////
 void CPPPreprocessor::
 handle_if_directive(const string &args, const YYLTYPE &loc) {
-  CPPExpression *expr = parse_expr(args, global_scope, global_scope);
+  // When expanding manifests, we should replace unknown macros
+  // with 0.
+  string expr = expand_manifests(args, true);
 
   int expression_result = 0;
-
-  if (expr != (CPPExpression *)NULL) {
-    CPPExpression::Result result = expr->evaluate();
+  CPPExpressionParser ep(current_scope, global_scope);
+  ep._verbose = 0;
+  if (ep.parse_expr(expr, *this)) {
+    CPPExpression::Result result = ep._expr->evaluate();
     if (result._type == CPPExpression::RT_error) {
       ostringstream strm;
-      strm << *expr;
+      strm << *ep._expr;
       warning("Ignoring invalid expression " + strm.str(), loc);
     } else {
       expression_result = result.as_integer();

dtool/src/cppparser/cppScope.cxx

@@ -1059,10 +1059,6 @@ copy_substitute_decl(CPPScope *to_scope, CPPDeclaration::SubstDecl &subst,
       (*vi).second->substitute_decl(subst, to_scope, global_scope)->as_instance();
     to_scope->_variables.insert(Variables::value_type((*vi).first, inst));
     if (inst != (*vi).second) {
-      // I don't know if this _native_scope assignment is right, but it
-      // fixes some issues with variables in instantiated template scopes
-      // being printed out with an uninstantiated template scope prefix. ~rdb
-      inst->_ident->_native_scope = to_scope;
       anything_changed = true;
     }
   }

dtool/src/dtoolutil/filename.I

@@ -337,6 +337,16 @@ operator [] (size_t n) const {
   return _filename[n];
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: Filename::substr
+//       Access: Published
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE string Filename::
+substr(size_t begin) const {
+  return _filename.substr(begin);
+}
+
 ////////////////////////////////////////////////////////////////////
 //     Function: Filename::substr
 //       Access: Published

dtool/src/dtoolutil/filename.h

@@ -125,7 +125,8 @@ PUBLISHED:
 
   EXTENSION(PyObject *__repr__() const);
 
-  INLINE string substr(size_t begin, size_t end = string::npos) const;
+  INLINE string substr(size_t begin) const;
+  INLINE string substr(size_t begin, size_t end) const;
   INLINE void operator += (const string &other);
   INLINE Filename operator + (const string &other) const;
 

dtool/src/parser-inc/string

@@ -26,7 +26,7 @@ template<class ctype>
 class basic_string {
 public:
   typedef typename size_t size_type;
-  static const size_t npos;
+  static const size_t npos = -1;
 
   basic_string();
   basic_string(const basic_string &copy);