diff options
Diffstat (limited to 'extract_conversion_functions.py')
| -rwxr-xr-x | extract_conversion_functions.py | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/extract_conversion_functions.py b/extract_conversion_functions.py new file mode 100755 index 0000000..c20f1e1 --- /dev/null +++ b/extract_conversion_functions.py @@ -0,0 +1,177 @@ +#!/usr/bin/python +# +# extract_conversion_functions.py +# +# Extract pytoguile and guiletopy conversion functions, and create +# calls to bind_g2p_function/bind_p2g_function as needed. +# +# This script is an auxiliary script for building PyGuile. +# +######################################################################## +# +# Copyright (C) 2008 Omer Zak. +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with this library, in a file named COPYING; if not, write to the +# Free Software Foundation, Inc., 59 Temple Place, Suite 330, +# Boston, MA 02111-1307 USA +# +# For licensing issues, contact <w1@zak.co.il>. +# +######################################################################## +# $Id: $ +######################################################################## + +import re +import sys +import exceptions +import time +from optparse import OptionParser + +######################################################################## + +class error(exceptions.Exception): + def __init__(self,*args): + self.args = args + +######################################################################## +# Common code +######################################################################## + +def extract_fnames(inptext=None): + """Extract g2p and p2g function names from the input text. + The return value is 2-tuple of (g2p_funcs,p2g_funcs), each + element being list of the names of the corresponding + functions. + """ + g2p_pattern = re.compile(r'PyObject\s+\*\s+(g\w+)\s*\(\s*SCM\s+[^)]+\)',re.S) + p2g_pattern = re.compile(r'SCM\s+(p\w+)\s*\(\s*PyObject\s*\*\s*[^)]+\)',re.S) + + g2p_funcs = g2p_pattern.findall(inptext) + p2g_funcs = p2g_pattern.findall(inptext) + + return((g2p_funcs,p2g_funcs)) + +######################################################################## + +def extract_converters(stdin=sys.stdin,stdout=sys.stdout,stderr=sys.stderr): + """Extract function declarations for *.inc files, as needed + by the PyGuile project. + """ + (g2p_funcs,p2g_funcs) = extract_fnames(inptext=stdin.read()) + tstamp = time.strftime("%Y%b%d-%H:%M:%S") + + if (len(g2p_funcs) > 0): + stdout.write("// Registration of guiletopy functions\n") + stdout.write("// Autogenerated at date %s\n" % tstamp) + stdout.write("void\nbind_g2p_functions(void)\n{\n") + for g2p_func in g2p_funcs: + if (g2p_func == "guile2python"): + stdout.write(""" guile2python_smob = scm_permanent_object(bind_g2p_function(%(fname)s,"%(fname)s"));\n""" + % { "fname" : g2p_func}) + stdout.write(""" guile2python_template_default = scm_permanent_object(scm_list_1(guile2python_smob));\n""") + stdout.write(""" guile2python_pair_template_default = scm_permanent_object(scm_cons(guile2python_template_default,guile2python_template_default));\n""") + stdout.write(""" guileassoc2pythondict_default = scm_permanent_object(scm_c_make_hash_table (2));\n""") + stdout.write(""" g2p_alist_template_default = scm_permanent_object(scm_list_1(scm_cons(guile2python_smob,guile2python_smob)));\n""") + else: + stdout.write(""" bind_g2p_function(%(fname)s,"%(fname)s");\n""" + % { "fname" : g2p_func}) + stdout.write("}\n") + stdout.write("// End of guiletopy functions\n") + if (len(p2g_funcs) > 0): + stdout.write("// Registration of pytoguile functions\n") + stdout.write("// Autogenerated at date %s\n" % tstamp) + stdout.write("void\nbind_p2g_functions(void)\n{\n") + for p2g_func in p2g_funcs: + if (p2g_func == "python2guile"): + stdout.write(""" python2guile_smob = scm_permanent_object(bind_p2g_function(%(fname)s,"%(fname)s"));\n""" + % { "fname" : p2g_func}) + stdout.write(""" python2guile_dict_default = scm_permanent_object(scm_cons(python2guile_smob,python2guile_smob));\n""") + else: + stdout.write(""" bind_p2g_function(%(fname)s,"%(fname)s");\n""" + % { "fname" : p2g_func}) + stdout.write("}\n") + stdout.write("// End of pytoguile functions\n") + +######################################################################## + +def extract_exports(template=None,stdin=sys.stdin,stdout=sys.stdout,stderr=sys.stderr): + """Prepare list of exports for pyguile.scm. + """ + (g2p_funcs,p2g_funcs) = extract_fnames(inptext=stdin.read()) + tstamp = time.strftime("%Y%b%d-%H:%M:%S") + + exports = "(export " + " ".join(g2p_funcs) + " " + " ".join(p2g_funcs) + ")\n" + + stdout.write(template % {"timestamp" : tstamp, "autogeneratedexports" : exports}) + +######################################################################## +# Main Program +######################################################################## + +def main(argv=None): + """Main program of the script - used to test the actual script code. + """ + op = OptionParser() + op.add_option("-i","--input",action="store", + dest="input",default=None, + help="Name of input file. Default is sys.stdin.") + op.add_option("-o","--output",action="store", + dest="output",default=None, + help="Name of output file. Default is sys.stdout.") + op.add_option("-e","--error",action="store", + dest="error",default=None, + help="Name of error output file. Default is sys.stderr.") + + op.add_option("--inc",action="store_true", + dest="inc",default=False, + help="Create *.inc file.") + op.add_option("--scm",action="store", + dest="scm",default=None, + help="Create *.scm file. The argument is the corresponding .scm.in file to be used as template.") + + (options,args) = op.parse_args(argv[1:]) + + # Process input/output/error files' parameters. + + if (options.input == None): + stdin = sys.stdin + else: + stdin = open(options.input) + if (options.output == None): + stdout = sys.stdout + else: + stdout = open(options.output,'w') + if (options.error == None): + stderr = sys.stderr + else: + stderr = open(options.error,'w') + + if (options.inc): + extract_converters(stdin=stdin,stdout=stdout,stderr=stderr) + elif (options.scm != None): + scminfile = open(options.scm) + scmintxt = scminfile.read() + scminfile.close() + extract_exports(template=scmintxt,stdin=stdin,stdout=stdout,stderr=stderr) + return(0) + +######################################################################## + +if (__name__ == '__main__'): + sys.exit(main(sys.argv)) + +else: + # I have been imported as a module. + pass + +# End of extract_conversion_functions.py |