Post date: May 20, 2009 7:04:17 PM

    • Compiling and running ATS programs.
      • ATS compiles .dats into C code, then invokes GCC to compile the C code to executable.
      • ATS is installed on csa2, under /usr/local/ats-lang-anairiats-0.1.4
      • Need to set ATSHOME environment variable to point to where ATS is installed.
      • See attached atscc shell script for a wrapper. Remember to chmod +x atscc to make it executable.
    • Downloading ATS code from course web page.
    • Printf works like C printf, but is type checked. The error message looks like this: the needed type is vararg, the actual type is ... . Not perfectly informative, but vararg helps pointing out it's an error involving the format string.
    • There is a difference between '(x1, x2, ..., xn) and @(x1, x2, ..., xn) tuples.
    • To use rational module, add the lines:
      • staload "rational.sats" dynload "rational.dats"
    • to your code, and pass rational.dats, rational.sats, and your source code file to atscc.
    • Implemented print_rat, sub_rat_rat, and mul_rat_rat in rational.dats (see attachment).
    • To compile the code, make sure you pass both rational.dats and rational.sats to the command line to atscc.