tree 1e09f9e7db481e7597f5e89729d2f2ea655afeda
parent f4dc670ee819ea30b1d636167e5be0d67d60241c
author Darius Rueckert <darius.rueckert@fau.de> 1575391650 +0100
committer Darius Rueckert <darius.rueckert@fau.de> 1575907985 +0100

Add the expression return type as a member to Expression

Before this patch the return type was implicitly defined by the
ExpressionType. This patch separates this connection and allows
each Expression to have one of the predefined types (scalar,
boolean, void).

This patch is required to add support for the functions isfinite,
isinf, isnan, and isnormal. These are function taking a double and
returning a bool.

This also moves some complexity of the code generator to the
Expression, because the generator can direclty get the c++ type.

Change-Id: I8b32bab1bfab2f668875e506d6f3b789a5d1f3fd