Method eval_boolean

Tools/EditorFramework/pugixml.cpp:8831–8945

	}

	bool eval_boolean(const xpath_context& c, const xpath_stack& stack)
	{
		switch (_type)
		{
		case ast_op_or: return _left->eval_boolean(c, stack) || _right->eval_boolean(c, stack);

		case ast_op_and: return _left->eval_boolean(c, stack) && _right->eval_boolean(c, stack);

		case ast_op_equal: return compare_eq(_left, _right, c, stack, equal_to());

		case ast_op_not_equal: return compare_eq(_left, _right, c, stack, not_equal_to());

		case ast_op_less: return compare_rel(_left, _right, c, stack, less());

		case ast_op_greater: return compare_rel(_right, _left, c, stack, less());

		case ast_op_less_or_equal: return compare_rel(_left, _right, c, stack, less_equal());

		case ast_op_greater_or_equal: return compare_rel(_right, _left, c, stack, less_equal());

		case ast_func_starts_with:
		{
			xpath_allocator_capture cr(stack.result);

			xpath_string lr = _left->eval_string(c, stack);
			xpath_string rr = _right->eval_string(c, stack);

			return starts_with(lr.c_str(), rr.c_str());
		}

		case ast_func_contains:
		{
			xpath_allocator_capture cr(stack.result);

			xpath_string lr = _left->eval_string(c, stack);
			xpath_string rr = _right->eval_string(c, stack);

			return find_substring(lr.c_str(), rr.c_str()) != 0;
		}

		case ast_func_boolean: return _left->eval_boolean(c, stack);

		case ast_func_not: return !_left->eval_boolean(c, stack);

		case ast_func_true: return true;

		case ast_func_false: return false;

		case ast_func_lang:
		{
			if (c.n.attribute())
				return false;

			xpath_allocator_capture cr(stack.result);

			xpath_string lang = _left->eval_string(c, stack);

			for (xml_node n = c.n.node(); n; n = n.parent())