src/analyze.cpp    | 60 +++++++-------------------------
 src/error.cpp      |  2 ++
 src/error.hpp      |  2 ++
 src/eval.cpp       | 47 +++++++++++++++++++------
 src/eval.hpp       |  2 +-
 test/run_tests.cpp | 10 ++++++
 6 files changed, 65 insertions(+), 58 deletions(-)