615 lines
21 KiB
Python
615 lines
21 KiB
Python
# Lasso - A free implementation of the Liberty Alliance specifications.
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#
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# Copyright (C) 2004-2007 Entr'ouvert
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# http://lasso.entrouvert.org
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#
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# Authors: See AUTHORS file in top-level directory.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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import os
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import os.path
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import sys
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import re
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import textwrap
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from utils import *
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class Output(object):
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def __init__(self, filename, indent = 4):
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self.fd = open(filename, 'w')
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self.indent_stack = [0]
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self.indent_size = indent
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def pn(self, s = ''):
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print >> self.fd, (' ' * self.indent_stack[-1]) + s
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def p(self, s = ''):
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print >>self.fd, s,
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def close(self):
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self.fd.close()
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def indent(self, c = None):
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if not c:
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c = self.indent_size
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self.indent_stack.append(c)
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def unindent(self):
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self.indent_stack.pop()
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package_top = '''package Lasso;
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use strict;
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use warnings;
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require XSLoader;
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XSLoader::load('Lasso');
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'''
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class Binding:
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xs = None
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pm = None
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typemap = None
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binding_data = None
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def __init__(self, binding_data):
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self.binding_data = binding_data
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self.src_dir = os.path.dirname(__file__)
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self.xs = Output('Lasso.xs')
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self.pm = Output('Lasso.pm')
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self.typemap = Output('typemap')
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def file_content(self, filename):
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return file(os.path.join(self.src_dir, filename)).read()
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def generate(self):
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# Generate XS
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self.generate_typemap()
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self.generate_xs_header()
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self.generate_xs_constants()
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self.generate_xs_functions()
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self.generate_xs_footer()
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# Generate PM
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self.generate_pm_header()
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# Generate
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self.generate_exceptions()
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for clss in self.binding_data.structs:
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self.generate_class(clss)
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def generate_typemap(self):
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self.typemap.pn('TYPEMAP')
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self.typemap.pn('''
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string_or_null\tT_STRING_OR_NULL
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string_non_null\tT_STRING_NON_NULL
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const gchar *\tT_PV
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gchar *\tT_PV
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gboolean\tT_IV
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const LassoProvider *\tT_GOBJECT_WRAPPER
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xmlNode*\tT_XMLNODE
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const xmlNode*\tT_XMLNODE
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GList_string\tT_GLIST_STRING
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GList_xmlnode\tT_GLIST_XMLNODE
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GList_gobject\tT_GLIST_GOBJECT
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GList_string_const\tT_GLIST_STRING
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GList_gobject_const\tT_GLIST_GOBJECT
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const GList*\tT_GLIST_STRING
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GHashTable*\tT_PTRREF
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''')
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# Map integer types
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for int in [ 'lasso_error_t', 'int', 'gint', 'long', 'glong'] + self.binding_data.enums:
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self.typemap.pn('%-30s T_IV' % int)
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# Map object types
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for clss in self.binding_data.structs:
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self.typemap.pn('%-30s T_GOBJECT_WRAPPER' % (clss.name + '*'))
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self.typemap.pn('const %-30s T_GOBJECT_WRAPPER' % (clss.name + '*'))
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# Create INPUT & OUTPUT maps
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self.typemap.p(self.file_content('typemap-in'))
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self.typemap.p(self.file_content('typemap-out'))
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def generate_pm_header(self):
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# Lasso.pm
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self.pm.p(package_top)
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for struct in self.binding_data.structs:
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if struct.name != 'LassoNode':
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self.pm.pn('package Lasso::%s;' % struct.name[5:])
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self.pm.pn('our @ISA = qw(Lasso::%s);' % struct.parent[5:])
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self.pm.pn()
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def generate_xs_header(self):
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'''Generate header of XS file'''
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self.xs.pn('''
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#include "EXTERN.h"
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#include "perl.h"
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#include "XSUB.h"
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#include <stdio.h>
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#if defined(__GNUC__)
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# define lasso_log(level, filename, line, function, format, args...) \
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g_log("Lasso", level, "%s:%i:%s" format, filename, line, function, ##args)
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#elif defined(HAVE_VARIADIC_MACROS)
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# define lasso_log(level, format, line, function, ...) \
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g_log("Lasso", leve, "%s:%i:%s" format, filename, line, function, __VA_ARGS__)
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#else
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static inline void lasso_log(GLogLevelFlags level, const char *filename,
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int line, const char *function, const char *format, ...)
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{
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va_list ap;
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char s[1024];
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va_start(ap, format);
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g_vsnprintf(s, 1024, format, ap);
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va_end(ap);
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g_log("Lasso", level, "%s:%i:%s %s", filename, line, function, s);
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}
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#define lasso_log lasso_log
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#endif
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#include "./gobject_handling.c"
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#include "./glist_handling.c"
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#include "./ghashtable_handling.c"
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#define lasso_assign_simple(a,b) a = b;
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typedef char* string_non_null;
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typedef char* string_or_null;
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typedef GList* GList_string;
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typedef GList* GList_gobject;
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typedef GList* GList_xmlnode;
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typedef const GList* GList_string_const;
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typedef const GList* GList_gobject_const;
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/* #include "ppport.h" */''')
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for h in self.binding_data.headers:
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self.xs.pn('#include <%s>' % h)
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self.xs.pn('''
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MODULE = Lasso PACKAGE = Lasso::Node
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INCLUDE: LassoNode.xs
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''')
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self.xs.pn('MODULE = Lasso PACKAGE = Lasso PREFIX = lasso_ ')
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self.xs.pn()
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self.xs.pn('PROTOTYPES: ENABLE')
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self.xs.pn()
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def generate_xs_constants(self):
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'''Generate a function which can return an int from a string'''
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self.xs.pn('''BOOT:
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{
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SV *ct;
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HV *stash;
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init_perl_lasso();
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stash = gv_stashpv("Lasso::Constants", 1);''')
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self.xs.indent()
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for constant in self.binding_data.constants:
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type, name = constant
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perl_name = name[6:]
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if False:
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self.xs.pn('ct = get_sv("Lasso::Constants::%s", TRUE | GV_ADDMULTI);' % perl_name)
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if type == 'i':
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self.xs.pn('sv_setiv(ct, %s);' % name)
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elif type == 's':
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self.xs.pn('sv_setpv(ct, %s);' % name)
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elif type == 'b': # only one case LASSO_WSF_ENABLED
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self.xs.unindent()
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self.xs.pn('''#ifdef %s
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sv_setiv(ct, 1);
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#else
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sv_setiv(ct, 0);
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#endif''' % name)
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self.xs.indent()
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else:
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raise Exception('Unknown constant type: type: "%s" name: "%s"' % (type,name))
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self.xs.pn('SvREADONLY_on (ct);')
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else:
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if type == 'i':
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self.xs.pn('ct = newSViv(%s);' % name)
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elif type == 's':
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self.xs.pn('ct = newSVpv(%s, 0);' % name)
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elif type == 'b': # only one case LASSO_WSF_ENABLED
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self.xs.unindent()
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self.xs.pn('''#ifdef %s
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ct = newSViv(1);
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#else
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ct = newSViv(0);
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#endif''' % name)
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self.xs.indent()
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self.xs.pn('newCONSTSUB(stash, "%s", ct);' % perl_name)
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self.xs.unindent()
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self.xs.pn('}')
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def generate_exceptions(self):
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'''Generate class for exceptions
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Generate a generic Error which can call lasso_strerror and a mapping
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from rc code to Exception class
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'''
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for c in self.binding_data.constants:
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m = re.match(r'LASSO_(\w+)_ERROR_(.*)', c[1])
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if not m:
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continue
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cat, detail = m.groups()
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def generate_xs_footer(self):
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'''Generate footer of XS file'''
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pass
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def generate_class(self, clss):
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klassname = clss.name
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pass
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def default_value(self, arg):
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default = arg_default(arg)
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if default[0] == 'b':
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return default[2:]
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elif default[0] == 'c':
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return default[2:]
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else:
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raise Exception('Unknown default value for %s' % (arg,))
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def generate_xs_function(self, func, prefix = None):
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cleanup = []
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name = func.name
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self.xs.pn()
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if not func.return_type or not is_glist(func.return_arg):
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self.xs.pn(func.return_type or 'void')
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elif is_glist(func.return_arg):
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try:
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self.xs.pn(self.glist_type(func.return_arg))
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except:
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print >>sys.stderr, 'failed', func.return_arg, func
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raise
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self.xs.p(name + '(')
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arg_list = []
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out_list = []
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arg_names = []
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if name.endswith('_new'):
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arg_list.append('char *cls')
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arg_names.append('cls')
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for arg in func.args:
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decl = ''
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aname = arg_name(arg)
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if is_out(arg):
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arg_names.append(aname)
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if not is_int(arg, self.binding_data) and is_object(arg):
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decl = unconstify(arg_type(arg))[:-1] + ' &' + aname + ' = NO_INIT'
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out_list.append(aname)
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else:
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raise Exception('Out arg of type: %s is not supported' % (arg,))
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else:
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if is_cstring(arg):
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if is_optional(arg):
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decl = 'string_or_null %s' % aname
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else:
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decl = 'string_non_null %s' % aname
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elif not is_glist(arg):
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decl = '%s %s' % (unconstify(arg_type(arg)), aname)
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else:
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decl = '%s %s' % (self.glist_type(arg), aname)
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if is_optional(arg):
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if arg_default(arg):
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arg_names.append(aname + ' = ' + self.default_value(arg))
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else:
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if is_cstring(arg) or is_glist(arg) or is_xml_node(arg) or is_object(arg):
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arg_names.append(aname + ' = NULL')
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else:
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raise Exception('Do not know what to do for optional: %s' % arg)
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else:
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arg_names.append(aname)
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arg_list.append(decl)
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# Cleanup code, for by-reference arguments
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if is_glist(arg) and not is_transfer_full(arg):
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cleanup.append(self.release_list(arg_name(arg), arg))
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if is_xml_node(arg) and not is_transfer_full(arg):
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cleanup.append('lasso_release_xml_node(%s)' % arg_name(arg))
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if is_hashtable(arg):
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raise Exception("No cleanup code generation for GHashTable")
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self.xs.p(','.join(arg_names))
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self.xs.pn(')')
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for decl in arg_list:
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self.xs.pn(' %s' % (decl,))
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if name.endswith('_new'):
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self.xs.pn(' INIT:')
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self.xs.pn(' cls = NULL;')
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self.xs.pn(' C_ARGS:')
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self.xs.pn(' ' + ', '.join([arg_name(arg) for arg in func.args]))
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elif prefix and not func.name.startswith(prefix + 'new'):
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self.xs.pn(' INIT:')
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self.xs.pn(' check_gobject((GObject*)%(first_arg)s, %(gtype)s);' % {
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'first_arg': arg_name(func.args[0]),
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'gtype': prefix + 'get_type()'
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} )
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if out_list:
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self.xs.pn(' INIT:')
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for o in out_list:
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self.xs.pn(' %s = NULL;' % o)
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self.xs.pn(' OUTPUT:')
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for o in out_list:
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self.xs.pn(' %s' % o)
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need_prototype = False
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for x in func.args:
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if is_glist(x):
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need_prototype = True
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elif is_hashtable(x):
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raise Exception("Dont know how to generate prototype for a hashtable argument")
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if need_prototype:
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self.xs.p('PROTOTYPE: ')
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optional = False
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proto = []
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if name.endswith('_new'):
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proto.append('$')
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for arg in func.args:
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if is_optional(arg) and not optional:
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proto.append(';')
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optional = True
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if is_glist(arg):
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proto.append('\\@')
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else:
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proto.append('$')
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self.xs.pn(''.join(proto))
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if '_new_' in name:
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self.xs.pn(' CODE:')
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self.xs.pn(' RETVAL = (%(type)s)%(name)s(%(args)s);' %
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{ 'name': name,
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'type': func.return_type,
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'args': ' ,'.join([arg_name(arg) for arg in func.args]) })
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self.xs.pn(''' OUTPUT:
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RETVAL''')
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cleanup.append('lasso_unref(RETVAL);')
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elif func.return_type and is_object(func.return_type) and not is_int(func.return_type, self.binding_data) and func.return_owner:
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cleanup.append('lasso_unref(RETVAL);')
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elif is_rc(func.return_arg):
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if name == 'lasso_check_version':
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cleanup.append('if (RETVAL != 1)')
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cleanup.append('gperl_lasso_error(RETVAL);')
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# Output cleanup code
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if cleanup:
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self.xs.pn(' CLEANUP:')
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self.xs.indent()
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for cl in cleanup:
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self.xs.pn(cl)
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self.xs.unindent()
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def generate_xs_getter_setter(self, struct, member):
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name = arg_name(member)
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type = arg_type(member)
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el_type = element_type(member)
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# Simple getter/setter
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if not is_glist(member) and not is_hashtable(member):
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self.xs.pn('''
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%(rtype)s
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%(field)s(%(clss)s* obj, %(rtype)s value = 0)
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CODE:
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if (items > 1) {
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%(assignment)s
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XSRETURN(0);
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} else {
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RETVAL = obj->%(field)s;
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}
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OUTPUT:
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RETVAL
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''' % { 'rtype': type, 'field': name, 'clss': struct.name, 'assignment': self.assign_type(member, 'obj->%s' % arg_name(member), 'value', struct) })
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elif is_glist(member):
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self.xs.pn('''
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%(rtype)s
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%(field)s(%(clss)s* obj, ...)
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PREINIT:
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int i = 1;
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CODE:
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if (items > 1) {
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%(release)s
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for (; i < items; i++) {
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%(el_type)s data;
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data = (%(el_type)s)%(convert)s;
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if (! data) {
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%(release)s
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croak("an element cannot be converted to an %(el_type)s");
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}
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%(push)s(obj->%(field)s, data);
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}
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XSRETURN(0);
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} else {
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RETVAL = obj->%(field)s;
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}
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OUTPUT:
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RETVAL
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''' % { 'rtype': self.glist_type(member),
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'field': name,
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'clss': struct.name,
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'el_type': self.element_type2real_type(element_type(member)),
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'push': self.push_macro(member),
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'convert': self.convert_function('ST(i)', member),
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'release': self.release_list('obj->' + arg_name(member), member),
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})
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elif is_hashtable(member):
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if is_object(element_type(member)):
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kind = "objects"
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else:
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kind = "strings"
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self.xs.pn('''
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HV*
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%(field)s(%(clss)s* obj, ...)
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PROTOTYPE:
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$;\%%
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CODE:
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if (items > 1) { /* setter */
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if (SvTYPE(ST(1)) != SVt_RV || ! SvTYPE(SvRV(ST(1))) != SVt_PVHV) {
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sv_dump(ST(1));
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croak("Lasso::%(klass)s::%(field)s takes a reference to a hash as argument");
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}
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set_hash_of_%(kind)s(&obj->%(field)s, (HV*)SvRV(ST(1)));
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}
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RETVAL = get_hash_of_%(kind)s(obj->%(field)s);
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sv_2mortal((SV*)RETVAL);
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OUTPUT:
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RETVAL
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''' % { 'kind': kind,
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'field': name,
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'clss': struct.name,
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'klass': struct.name[5:]
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})
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def starify(self, str):
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if '*' in str:
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return str
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else:
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return str + '*'
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def glist_type(self, member):
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x = self.element_type_lookup(member, { 'string': 'GList_string', 'xml_node': 'GList_xmlnode', 'gobject': 'GList_gobject'})
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if is_const(member):
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return x + '_const'
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return x
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def element_type_lookup(self, member, lookup_table):
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if not is_glist(member):
|
|
raise Exception('calling release_list on %s' % member)
|
|
type = element_type(member)
|
|
if is_cstring(type):
|
|
return lookup_table['string']
|
|
elif is_xml_node(type):
|
|
return lookup_table['xml_node']
|
|
elif is_object(type):
|
|
return lookup_table['gobject']
|
|
else:
|
|
raise Exception('Do not know how to release GList<%s>' % type)
|
|
return '%s(%s->%s);' % (macro, what, arg_name(member))
|
|
|
|
|
|
def release_list(self, what, member):
|
|
if not is_glist(member):
|
|
raise Exception('calling release_list on %s' % member)
|
|
type = element_type(member)
|
|
if is_cstring(type):
|
|
macro = 'lasso_release_list_of_strings'
|
|
elif is_xml_node(type):
|
|
macro = 'lasso_release_list_of_xml_node'
|
|
elif is_object(type):
|
|
macro = 'lasso_release_list_of_gobjects'
|
|
else:
|
|
raise Exception('Do not know how to release GList<%s>' % type)
|
|
return '%s(%s);' % (macro, what)
|
|
|
|
def convert_function(self, what, member):
|
|
if not is_glist(member):
|
|
raise Exception('calling release_list on %s' % member)
|
|
type = element_type(member)
|
|
if is_cstring(type):
|
|
macro = 'SvPV_nolen'
|
|
elif is_xml_node(type):
|
|
macro = 'pv_to_xmlnode'
|
|
elif is_object(type):
|
|
macro = 'gperl_get_object'
|
|
else:
|
|
raise Exception('Do not know how to release GList<%s>' % type)
|
|
return '%s(%s)' % (macro, what)
|
|
|
|
def push_macro(self, member):
|
|
if not is_glist(member):
|
|
raise Exception('calling release_list on %s' % member)
|
|
type = element_type(member)
|
|
if is_cstring(type):
|
|
macro = 'lasso_list_add_string'
|
|
elif is_xml_node(type):
|
|
macro = 'lasso_list_add_new_xml_node'
|
|
elif is_object(type):
|
|
macro = 'lasso_list_add_gobject'
|
|
else:
|
|
raise Exception('Do not know how to push to GList<%s>' % type)
|
|
return macro
|
|
|
|
def assign_type(self, arg, to, fr, struct = None):
|
|
type = arg_type(arg)
|
|
el_type = element_type(arg)
|
|
name = arg_name
|
|
if is_int(arg, self.binding_data):
|
|
macro = 'lasso_assign_simple'
|
|
elif is_cstring(arg):
|
|
macro = 'lasso_assign_string'
|
|
elif is_xml_node(arg):
|
|
macro = 'lasso_assign_xml_node'
|
|
elif is_glist(arg):
|
|
if not el_type:
|
|
raise Exception('%s has no element type %s' % (arg, struct))
|
|
if is_cstring(el_type):
|
|
macro = 'lasso_assign_list_of_strings'
|
|
elif is_xml_node(el_type):
|
|
macro = 'lasso_assign_simple' # FIXME
|
|
elif is_object(el_type):
|
|
macro = 'lasso_assign_list_of_gobjects'
|
|
else:
|
|
raise Exception('GList<%s> is an unsupported type' % el_type)
|
|
elif is_object(arg):
|
|
macro = 'lasso_assign_gobject'
|
|
elif is_hashtable(arg) or is_boolean(arg) or is_int(arg, self.binding_data):
|
|
macro = 'lasso_assign_simple' # FIXME
|
|
else:
|
|
raise Exception('%s is an unsupported type' % arg)
|
|
return '%s(%s, %s);' % (macro, to, fr)
|
|
|
|
def generate_xs_functions(self):
|
|
for func in self.binding_data.functions:
|
|
# skip constructors
|
|
if func.name.endswith('new') or '_new_' in func.name:
|
|
continue
|
|
self.generate_xs_function(func)
|
|
for struct in self.binding_data.structs:
|
|
name = struct.name[5:]
|
|
prefix = 'lasso_' + format_as_underscored(name) + '_'
|
|
self.xs.pn('\nMODULE = Lasso\tPACKAGE = Lasso::%s\tPREFIX = %s\n' % (name, prefix))
|
|
# find the constructors
|
|
for func in self.binding_data.functions:
|
|
if func.name.startswith(prefix+'new'):
|
|
self.generate_xs_function(func)
|
|
for func in struct.methods:
|
|
self.generate_xs_function(func, prefix = prefix)
|
|
for member in struct.members:
|
|
if arg_type(member) == 'void*':
|
|
print 'Skipping %s' % member
|
|
continue
|
|
try:
|
|
self.generate_xs_getter_setter(struct, member)
|
|
except:
|
|
print 'failed', struct, member
|
|
raise
|
|
|
|
def generate_wrapper(self):
|
|
pass
|
|
|
|
def generate_member_wrapper(self, c):
|
|
pass
|
|
|
|
def return_value(self, vtype, options):
|
|
pass
|
|
|
|
def element_type2real_type(self, type):
|
|
if is_cstring(type):
|
|
if is_const(type):
|
|
return 'const char*'
|
|
else:
|
|
return 'char*'
|
|
else:
|
|
return type + '*'
|