gstreamer/bindings/python/codegen/defsparser.py
2011-08-10 17:12:45 +02:00

153 lines
5.7 KiB
Python

# -*- Mode: Python; py-indent-offset: 4 -*-
import os, sys
import scmexpr
from definitions import BoxedDef, EnumDef, FlagsDef, FunctionDef, \
InterfaceDef, MethodDef, ObjectDef, PointerDef, VirtualDef
include_path = ['.']
class IncludeParser(scmexpr.Parser):
"""A simple parser that follows include statements automatically"""
def include(self, input_filename):
global include_path
if os.path.isabs(input_filename):
filename = input_filename
# set self.filename to the include name, to handle recursive includes
oldfile = self.filename
self.filename = filename
self.startParsing()
self.filename = oldfile
else:
inc_path = [os.path.dirname(self.filename)] + include_path
for filename in [os.path.join(path_entry, input_filename)
for path_entry in inc_path]:
if not os.path.exists(filename):
continue
# set self.filename to the include name, to handle recursive includes
oldfile = self.filename
self.filename = filename
self.startParsing()
self.filename = oldfile
break
else:
raise IOError("%s not found in include path %s" % (input_filename, inc_path))
class DefsParser(IncludeParser):
def __init__(self, arg, defines={}):
IncludeParser.__init__(self, arg)
self.objects = []
self.interfaces = []
self.enums = [] # enums and flags
self.boxes = [] # boxed types
self.pointers = [] # pointer types
self.functions = [] # functions and methods
self.virtuals = [] # virtual methods
self.c_name = {} # hash of c names of functions
self.methods = {} # hash of methods of particular objects
self.defines = defines # -Dfoo=bar options, as dictionary
def define_object(self, *args):
odef = apply(ObjectDef, args)
self.objects.append(odef)
self.c_name[odef.c_name] = odef
def define_interface(self, *args):
idef = apply(InterfaceDef, args)
self.interfaces.append(idef)
self.c_name[idef.c_name] = idef
def define_enum(self, *args):
edef = apply(EnumDef, args)
self.enums.append(edef)
self.c_name[edef.c_name] = edef
def define_flags(self, *args):
fdef = apply(FlagsDef, args)
self.enums.append(fdef)
self.c_name[fdef.c_name] = fdef
def define_boxed(self, *args):
bdef = apply(BoxedDef, args)
self.boxes.append(bdef)
self.c_name[bdef.c_name] = bdef
def define_pointer(self, *args):
pdef = apply(PointerDef, args)
self.pointers.append(pdef)
self.c_name[pdef.c_name] = pdef
def define_function(self, *args):
fdef = apply(FunctionDef, args)
self.functions.append(fdef)
self.c_name[fdef.c_name] = fdef
def define_method(self, *args):
mdef = apply(MethodDef, args)
self.functions.append(mdef)
self.c_name[mdef.c_name] = mdef
def define_virtual(self, *args):
vdef = apply(VirtualDef, args)
self.virtuals.append(vdef)
def merge(self, old, parmerge):
for obj in self.objects:
if old.c_name.has_key(obj.c_name):
obj.merge(old.c_name[obj.c_name])
for f in self.functions:
if old.c_name.has_key(f.c_name):
f.merge(old.c_name[f.c_name], parmerge)
def printMissing(self, old):
for obj in self.objects:
if not old.c_name.has_key(obj.c_name):
obj.write_defs()
for f in self.functions:
if not old.c_name.has_key(f.c_name):
f.write_defs()
def write_defs(self, fp=sys.stdout):
for obj in self.objects:
obj.write_defs(fp)
for enum in self.enums:
enum.write_defs(fp)
for boxed in self.boxes:
boxed.write_defs(fp)
for pointer in self.pointers:
pointer.write_defs(fp)
for func in self.functions:
func.write_defs(fp)
def find_object(self, c_name):
for obj in self.objects:
if obj.c_name == c_name:
return obj
else:
raise ValueError('object %r not found' % c_name)
def find_constructor(self, obj, overrides):
for func in self.functions:
if isinstance(func, FunctionDef) and \
func.is_constructor_of == obj.c_name and \
not overrides.is_ignored(func.c_name):
return func
def find_methods(self, obj):
objname = obj.c_name
return filter(lambda func, on=objname: isinstance(func, MethodDef) and
func.of_object == on, self.functions)
def find_virtuals(self, obj):
objname = obj.c_name
retval = filter(lambda func, on=objname: isinstance(func, VirtualDef) and
func.of_object == on, self.virtuals)
return retval
def find_functions(self):
return filter(lambda func: isinstance(func, FunctionDef) and
not func.is_constructor_of, self.functions)
def ifdef(self, *args):
if args[0] in self.defines:
for arg in args[1:]:
#print >> sys.stderr, "-----> Handling conditional definition (%s): %s" % (args[0], arg)
self.handle(arg)
else:
pass
#print >> sys.stderr, "-----> Conditional %s is not true" % (args[0],)
def ifndef(self, *args):
if args[0] not in self.defines:
for arg in args[1:]:
self.handle(arg)