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64949cb753
The majority of the changes are in the compiler. The mainloop changes
primarily to implement the new opcodes and to pass a function's
closure to eval_code2(). Frames and functions got new slots to hold
the closure.
Include/compile.h
Add co_freevars and co_cellvars slots to code objects.
Update PyCode_New() to take freevars and cellvars as arguments
Include/funcobject.h
Add func_closure slot to function objects.
Add GetClosure()/SetClosure() functions (and corresponding
macros) for getting at the closure.
Include/frameobject.h
PyFrame_New() now takes a closure.
Include/opcode.h
Add four new opcodes: MAKE_CLOSURE, LOAD_CLOSURE, LOAD_DEREF,
STORE_DEREF.
Remove comment about old requirement for opcodes to fit in 7
bits.
compile.c
Implement changes to code objects for co_freevars and co_cellvars.
Modify symbol table to use st_cur_name (string object for the name
of the current scope) and st_cur_children (list of nested blocks).
Also define st_nested, which might more properly be called
st_cur_nested. Add several DEF_XXX flags to track def-use
information for free variables.
New or modified functions of note:
com_make_closure(struct compiling *, PyCodeObject *)
Emit LOAD_CLOSURE opcodes as needed to pass cells for free
variables into nested scope.
com_addop_varname(struct compiling *, int, char *)
Emits opcodes for LOAD_DEREF and STORE_DEREF.
get_ref_type(struct compiling *, char *name)
Return NAME_CLOSURE if ref type is FREE or CELL
symtable_load_symbols(struct compiling *)
Decides what variables are cell or free based on def-use info.
Can now raise SyntaxError if nested scopes are mixed with
exec or from blah import *.
make_scope_info(PyObject *, PyObject *, int, int)
Helper functions for symtable scope stack.
symtable_update_free_vars(struct symtable *)
After a code block has been analyzed, it must check each of
its children for free variables that are not defined in the
block. If a variable is free in a child and not defined in
the parent, then it is defined by block the enclosing the
current one or it is a global. This does the right logic.
symtable_add_use() is now a macro for symtable_add_def()
symtable_assign(struct symtable *, node *)
Use goto instead of for (;;)
Fixed bug in symtable where name of keyword argument in function
call was treated as assignment in the scope of the call site. Ex:
def f():
g(a=2) # a was considered a local of f
ceval.c
eval_code2() now take one more argument, a closure.
Implement LOAD_CLOSURE, LOAD_DEREF, STORE_DEREF, MAKE_CLOSURE>
Also: When name error occurs for global variable, report that the
name was global in the error mesage.
Objects/frameobject.c
Initialize f_closure to be a tuple containing space for cellvars
and freevars. f_closure is NULL if neither are present.
Objects/funcobject.c
Add support for func_closure.
Python/import.c
Change the magic number.
Python/marshal.c
Track changes to code objects.
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|---|---|---|
| .. | ||
| .cvsignore | ||
| atof.c | ||
| bltinmodule.c | ||
| ceval.c | ||
| codecs.c | ||
| compile.c | ||
| dup2.c | ||
| dynload_aix.c | ||
| dynload_beos.c | ||
| dynload_dl.c | ||
| dynload_hpux.c | ||
| dynload_mac.c | ||
| dynload_next.c | ||
| dynload_os2.c | ||
| dynload_shlib.c | ||
| dynload_stub.c | ||
| dynload_win.c | ||
| errors.c | ||
| exceptions.c | ||
| fmod.c | ||
| frozen.c | ||
| frozenmain.c | ||
| getargs.c | ||
| getcompiler.c | ||
| getcopyright.c | ||
| getcwd.c | ||
| getmtime.c | ||
| getopt.c | ||
| getplatform.c | ||
| getversion.c | ||
| graminit.c | ||
| hypot.c | ||
| import.c | ||
| importdl.c | ||
| importdl.h | ||
| Makefile.in | ||
| marshal.c | ||
| memmove.c | ||
| modsupport.c | ||
| mystrtoul.c | ||
| pyfpe.c | ||
| pystate.c | ||
| pythonmain.c | ||
| pythonrun.c | ||
| sigcheck.c | ||
| strdup.c | ||
| strerror.c | ||
| strtod.c | ||
| structmember.c | ||
| sysmodule.c | ||
| thread.c | ||
| thread_beos.h | ||
| thread_cthread.h | ||
| thread_foobar.h | ||
| thread_lwp.h | ||
| thread_nt.h | ||
| thread_os2.h | ||
| thread_pth.h | ||
| thread_pthread.h | ||
| thread_sgi.h | ||
| thread_solaris.h | ||
| thread_wince.h | ||
| traceback.c | ||