generating byte code from compiler.parse output

Re: generating byte code from compiler.parse output

[email protected] (Chris Wright) writes:
[color=blue]
> Is there a way to go from the AST output of compiler.paser to byte
> code[/color]

Yes. Use the source, Luke.
[color=blue]
> i.e. in the example below, is there a way to compile m and get a code
> object that could then be called?[/color]

You have to find out what compiler.compil e is doing in addition to
what you are doing. Then, you find, that you need misc.set_filena me,
syntax.check, ModuleCodeGener ator, and .getCode, in that order.

HTH,
Martin

Re: generating byte code from compiler.parse output

After Martin's gentle prodding, I came up with the code below
(without error checking etc....)

I am very grateful !

cheers

Chris

------------------

from compiler import parse, syntax
from misc import set_filename
from pycodegen import ModuleCodeGener ator

class Test:
def __init__(self):
pass

def munge_code_stri ng(s):
m = parse(s)
set_filename("< string>", m)
syntax.check(m)
print m
gen = ModuleCodeGener ator(m)
c = gen.getCode()
return c


code_string = """
def f(x):
print x
"""

if __name__ == '__main__':
t = Test()
code = munge_code_stri ng(code_string)
exec code in globals(), t.__dict__
print dir(t)
t.f(4)

[email protected] .de (Martin v. Löwis) wrote in message news:<m3wudoadz [email protected] rmatik.hu-berlin.de>...[color=blue]
> [email protected] (Chris Wright) writes:
>[color=green]
> > Is there a way to go from the AST output of compiler.paser to byte
> > code[/color]
>
> Yes. Use the source, Luke.
>[color=green]
> > i.e. in the example below, is there a way to compile m and get a code
> > object that could then be called?[/color]
>
> You have to find out what compiler.compil e is doing in addition to
> what you are doing. Then, you find, that you need misc.set_filena me,
> syntax.check, ModuleCodeGener ator, and .getCode, in that order.
>
> HTH,
> Martin[/color]