Convert object and Exceptions to Classes instead of C types

[GoogleCodeExporter]

Currently, exceptions are implemented as C types: OBJ_TYPE_EXN and created by 
the builtin function _exn().

The root object can be created by: class object(): pass
and exceptions can be declared as classes.

This allows the _exn() and _clo() builtin functions to be removed and makes 
for a more cleaner implementation. 

Original issue reported on code.google.com by dwhall...@gmail.com on 20 May 2009 at 6:57

[GoogleCodeExporter]

Original comment by dwhall...@gmail.com on 20 May 2009 at 6:57

• Changed state: Started
• Added labels: Milestone-r10

[GoogleCodeExporter]

Size before:
main.elf  :
section             size      addr
.text              45104         0
.rodata             3880     45104
.rodata.str1.1        59     48984
.rodata.str1.4       136     49044
.data               2236   2097152
.bss               12708   2099388

Size after:
main.elf  :
section             size      addr
.text              44996         0
.rodata             4084     44996
.rodata.str1.1        59     49080
.rodata.str1.4       136     49140
.data               2228   2097152
.bss               12708   2099380

Summary: code changed from native functions to bytecode (readonly bytes); (so 
compare .text + 
.rodata):
before = 45104+3880 = 48984
after  = 44996+4084 = 49080
net = 96 more bytes.

I consider this increase in size is an acceptable amount for this change.

Original comment by dwhall...@gmail.com on 20 May 2009 at 11:03

[GoogleCodeExporter]

Running "make check" with the code change to __bi.py revealed a bug that I 
documented 
in issue #39.  I changed system test t141.py as a permanent workaround.  The 
nature of 
the test has not changed.  With the change to t141.py, make check passes.

Also changed LOAD_NAME in interp.c so that if PM_PBUILTINS is null, it won't be 
checked 
for the name.

Original comment by dwhall...@gmail.com on 20 May 2009 at 11:12

[GoogleCodeExporter]

Mainlined directly, see r369.

Original comment by dwhall...@gmail.com on 20 May 2009 at 11:14

• Changed state: Fixed

[GoogleCodeExporter]

Changing Milestone-r10 to Milestone-r09

Original comment by dwhall...@gmail.com on 7 Mar 2010 at 6:26

• Added labels: Milestone-r09

[GoogleCodeExporter]

Changed r09 to R09

Original comment by dwhall...@gmail.com on 12 Mar 2010 at 8:22

[GoogleCodeExporter]

Original comment by dwhall...@gmail.com on 13 Mar 2010 at 1:30

• Added labels: Milestone-09