protected Expression safe_atom()
{
Expression e;
e = null;
UnaryExpression ue = null;
try { // for error handling
e=atom();
{
switch ( LA(1) )
{
case NULLABLE_SUFFIX:
{
match(NULLABLE_SUFFIX);
if (0==inputState.guessing)
{
ue = new UnaryExpression(e.LexicalInfo);
ue.Operator = UnaryOperatorType.SafeAccess;
ue.Operand = e;
e = ue;
}
break;
}
case EOF:
case DEDENT:
case ESEPARATOR:
case EOL:
case ASSEMBLY_ATTRIBUTE_BEGIN:
case MODULE_ATTRIBUTE_BEGIN:
case ABSTRACT:
case AND:
case AS:
case BREAK:
case CONTINUE:
case CALLABLE:
case CAST:
case CHAR:
case CLASS:
case DEF:
case DO:
case ELSE:
case ENUM:
case EVENT:
case FINAL:
case FOR:
case FALSE:
case GOTO:
case INTERFACE:
case INTERNAL:
case IS:
case ISA:
case IF:
case IN:
case NEW:
case NOT:
case NULL:
case OF:
case OR:
case OVERRIDE:
case PARTIAL:
case PUBLIC:
case PROTECTED:
case PRIVATE:
case RAISE:
case RETURN:
case SELF:
case SUPER:
case STATIC:
case STRUCT:
case THEN:
case TRY:
case TRANSIENT:
case TRUE:
case TYPEOF:
case UNLESS:
case VIRTUAL:
case WHILE:
case YIELD:
case TRIPLE_QUOTED_STRING:
case EOS:
case LPAREN:
case RPAREN:
case DOUBLE_QUOTED_STRING:
case SINGLE_QUOTED_STRING:
case ID:
case MULTIPLY:
case LBRACK:
case RBRACK:
case ASSIGN:
case COMMA:
case SPLICE_BEGIN:
case DOT:
case COLON:
case EXPONENTIATION:
case BITWISE_OR:
case LBRACE:
case RBRACE:
case QQ_BEGIN:
case QQ_END:
case INPLACE_BITWISE_OR:
case INPLACE_EXCLUSIVE_OR:
case INPLACE_BITWISE_AND:
case INPLACE_SHIFT_LEFT:
case INPLACE_SHIFT_RIGHT:
case CMP_OPERATOR:
case GREATER_THAN:
case LESS_THAN:
case ADD:
case SUBTRACT:
case EXCLUSIVE_OR:
case DIVISION:
case MODULUS:
case BITWISE_AND:
case SHIFT_LEFT:
case SHIFT_RIGHT:
case LONG:
case INCREMENT:
case DECREMENT:
case ONES_COMPLEMENT:
case INT:
case BACKTICK_QUOTED_STRING:
case RE_LITERAL:
case DOUBLE:
case FLOAT:
case TIMESPAN:
{
break;
}
default:
{
throw new NoViableAltException(LT(1), getFilename());
}
}
}
}
catch (RecognitionException ex)
{
if (0 == inputState.guessing)
{
reportError(ex, "safe_atom");
recover(ex,tokenSet_73_);
}
else
{
throw ex;
}
}
return e;
}
