Fix jobs on standalone mode

Resolves   #739.

coconut/command/command.py

@@ -96,6 +96,8 @@
     can_parse,
     invert_mypy_arg,
     run_with_stack_size,
+    memoized_isdir,
+    memoized_isfile,
 )
 from coconut.compiler.util import (
     should_indent,
@@ -302,7 +304,7 @@ def execute_args(self, args, interact=True, original_args=None):
                 ]
 
                 # disable jobs if we know we're only compiling one file
-                if len(src_dest_package_triples) <= 1 and not any(package for _, _, package in src_dest_package_triples):
+                if len(src_dest_package_triples) <= 1 and not any(memoized_isdir(source) for source, dest, package in src_dest_package_triples):
                     self.disable_jobs()
 
                 # do compilation
@@ -363,12 +365,12 @@ def process_source_dest(self, source, dest, args):
         processed_source = fixpath(source)
 
         # validate args
-        if (args.run or args.interact) and os.path.isdir(processed_source):
+        if (args.run or args.interact) and memoized_isdir(processed_source):
             if args.run:
                 raise CoconutException("source path %r must point to file not directory when --run is enabled" % (source,))
             if args.interact:
                 raise CoconutException("source path %r must point to file not directory when --run (implied by --interact) is enabled" % (source,))
-        if args.watch and os.path.isfile(processed_source):
+        if args.watch and memoized_isfile(processed_source):
             raise CoconutException("source path %r must point to directory not file when --watch is enabled" % (source,))
 
         # determine dest
@@ -389,9 +391,9 @@ def process_source_dest(self, source, dest, args):
             package = False
         else:
             # auto-decide package
-            if os.path.isfile(source):
+            if memoized_isfile(processed_source):
                 package = False
-            elif os.path.isdir(source):
+            elif memoized_isdir(processed_source):
                 package = True
             else:
                 raise CoconutException("could not find source path", source)
@@ -442,17 +444,17 @@ def compile_path(self, path, write=True, package=True, **kwargs):
         """Compile a path and returns paths to compiled files."""
         if not isinstance(write, bool):
             write = fixpath(write)
-        if os.path.isfile(path):
+        if memoized_isfile(path):
             destpath = self.compile_file(path, write, package, **kwargs)
             return [destpath] if destpath is not None else []
-        elif os.path.isdir(path):
+        elif memoized_isdir(path):
             return self.compile_folder(path, write, package, **kwargs)
         else:
             raise CoconutException("could not find source path", path)
 
     def compile_folder(self, directory, write=True, package=True, **kwargs):
         """Compile a directory and returns paths to compiled files."""
-        if not isinstance(write, bool) and os.path.isfile(write):
+        if not isinstance(write, bool) and memoized_isfile(write):
             raise CoconutException("destination path cannot point to a file when compiling a directory")
         filepaths = []
         for dirpath, dirnames, filenames in os.walk(directory):
@@ -660,7 +662,7 @@ def running_jobs(self, exit_on_error=True):
 
     def has_hash_of(self, destpath, code, package_level):
         """Determine if a file has the hash of the code."""
-        if destpath is not None and os.path.isfile(destpath):
+        if destpath is not None and memoized_isfile(destpath):
             with univ_open(destpath, "r") as opened:
                 compiled = readfile(opened)
             hashash = gethash(compiled)
@@ -989,7 +991,7 @@ def watch(self, src_dest_package_triples, run=False, force=False):
 
         def recompile(path, src, dest, package):
             path = fixpath(path)
-            if os.path.isfile(path) and os.path.splitext(path)[1] in code_exts:
+            if memoized_isfile(path) and os.path.splitext(path)[1] in code_exts:
                 with self.handling_exceptions():
                     if dest is True or dest is None:
                         writedir = dest
@@ -1043,7 +1045,7 @@ def site_uninstall(self):
         python_lib = self.get_python_lib()
         pth_file = os.path.join(python_lib, os.path.basename(coconut_pth_file))
 
-        if os.path.isfile(pth_file):
+        if memoized_isfile(pth_file):
             os.remove(pth_file)
             logger.show_sig("Removed %s from %s" % (os.path.basename(coconut_pth_file), python_lib))
         else:

coconut/command/util.py

@@ -46,6 +46,7 @@
     pickleable_obj,
     get_encoding,
     get_clock_time,
+    memoize,
 )
 from coconut.constants import (
     WINDOWS,
@@ -132,6 +133,10 @@
 # -----------------------------------------------------------------------------------------------------------------------
 
 
+memoized_isdir = memoize(128)(os.path.isdir)
+memoized_isfile = memoize(128)(os.path.isfile)
+
+
 def writefile(openedfile, newcontents):
     """Set the contents of a file."""
     openedfile.seek(0)

coconut/root.py

@@ -26,7 +26,7 @@
 VERSION = "3.0.0"
 VERSION_NAME = None
 # False for release, int >= 1 for develop
-DEVELOP = 2
+DEVELOP = 3
 ALPHA = False  # for pre releases rather than post releases
 
 assert DEVELOP is False or DEVELOP >= 1, "DEVELOP must be False or an int >= 1"