[mycpp] Remove --shared-ptr flag

Need to reconcile mylib.cc and my_runtime.cc.

mycpp/cppgen_pass.py

@@ -22,9 +22,6 @@
 from util import log
 
 
-SHARED_PTR = False  # global variable set by main()
-
-
 T = None
 
 class UnsupportedException(Exception):

mycpp/harness.sh

@@ -56,18 +56,11 @@ _translate-example() {
   local raw=_gen/${name}_raw${variant}.cc
   local out=_gen/${name}${variant}.cc
 
-  flags=''
-  case $variant in
-    (.shared_ptr)
-      flags='--shared-ptr'
-      ;;
-  esac
-
   # NOTE: mycpp has to be run in the virtualenv, as well as with a different
   # PYTHONPATH.
   ( source _tmp/mycpp-venv/bin/activate
     # flags may be empty
-    time PYTHONPATH=$MYPY_REPO ./mycpp_main.py $flags $main > $raw
+    time PYTHONPATH=$MYPY_REPO ./mycpp_main.py $main > $raw
   )
   wc -l $raw
 
@@ -108,6 +101,7 @@ _compile-example() {
   local -a runtime
   if test -n "${GC:-}"; then
     runtime=(my_runtime.cc gc_heap.cc)
+    # TODO: Reconcile my_runtime.cc and mylib.cc
   else
     runtime=(mylib.cc gc_heap.cc)
   fi

mycpp/mycpp_main.py

@@ -32,10 +32,6 @@ def Options():
       '-v', '--verbose', dest='verbose', action='store_true', default=False,
       help='Show details about translation')
 
-  p.add_option(
-      '--shared-ptr', dest='shared_ptr', action='store_true', default=False,
-      help='Emit code using std::shared_ptr instead of raw pointers')
-
   p.add_option(
       '--to-header', dest='to_header', action='append', default=[],
       help='Export this module to a header, e.g. frontend.args')
@@ -126,10 +122,6 @@ def main(argv):
 
   o = Options()
   opts, argv = o.parse_args(argv)
-
-  if opts.shared_ptr:
-    log('*** Compiling with std::shared_ptr<> ***')
-    cppgen_pass.SHARED_PTR = True  # global var hack for now
 
   paths = argv[1:]  # e.g. asdl/typed_arith_parse.py
 
@@ -236,6 +228,7 @@ def main(argv):
 
   gc = bool(os.getenv('GC'))
   header_name = 'gc_heap' if gc else 'mylib'
+  #header_name = 'mylib'
 
   # TODO: Add --cc-out?  But there is a preamble and postamble.
   f.write("""\

mycpp/run.sh

@@ -217,6 +217,13 @@ gen-ctags() {
 }
 
 gc-examples() {
+  # print()
+  GC=1 example-both switch_
+  return
+
+  # slice(), maybe_str_equals()
+  GC=1 example-both length
+
   if true; then
     # these work
     GC=1 example-both fib_iter