mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 20:21:24 +00:00
a8ef403515
Original commit message from CVS: * codegen/*: Copy PyGTK code generator here, to avoid depending on latest version. * configure.ac: Add versioning, ala pygtk, and use the internal code generator instead of the installed one
419 lines
14 KiB
Python
419 lines
14 KiB
Python
# -*- Mode: Python; py-indent-offset: 4 -*-
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import sys
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class Definition:
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def __init__(self, *args):
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"""Create a new defs object of this type. The arguments are the
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components of the definition"""
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raise RuntimeError, "this is an abstract class"
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def merge(self, old):
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"""Merge in customisations from older version of definition"""
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raise RuntimeError, "this is an abstract class"
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def write_defs(self, fp=sys.stdout):
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"""write out this definition in defs file format"""
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raise RuntimeError, "this is an abstract class"
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class ObjectDef(Definition):
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def __init__(self, name, *args):
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self.name = name
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self.module = None
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self.parent = None
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self.c_name = None
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self.typecode = None
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self.fields = []
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self.implements = []
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for arg in args:
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if type(arg) != type(()) or len(arg) < 2:
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continue
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if arg[0] == 'in-module':
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self.module = arg[1]
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elif arg[0] == 'parent':
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self.parent = arg[1]
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elif arg[0] == 'c-name':
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self.c_name = arg[1]
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elif arg[0] == 'gtype-id':
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self.typecode = arg[1]
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elif arg[0] == 'fields':
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for parg in arg[1:]:
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self.fields.append((parg[0], parg[1]))
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elif arg[0] == 'implements':
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self.implements.append(arg[1])
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def merge(self, old):
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# currently the .h parser doesn't try to work out what fields of
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# an object structure should be public, so we just copy the list
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# from the old version ...
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self.fields = old.fields
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self.implements = old.implements
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def write_defs(self, fp=sys.stdout):
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fp.write('(define-object ' + self.name + '\n')
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if self.module:
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fp.write(' (in-module "' + self.module + '")\n')
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if self.parent != (None, None):
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fp.write(' (parent "' + self.parent + '")\n')
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for interface in self.implements:
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fp.write(' (implements "' + interface + '")\n')
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if self.c_name:
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fp.write(' (c-name "' + self.c_name + '")\n')
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if self.typecode:
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fp.write(' (gtype-id "' + self.typecode + '")\n')
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if self.fields:
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fp.write(' (fields\n')
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for (ftype, fname) in self.fields:
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fp.write(' \'("' + ftype + '" "' + fname + '")\n')
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fp.write(' )\n')
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fp.write(')\n\n')
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class InterfaceDef(Definition):
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def __init__(self, name, *args):
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self.name = name
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self.module = None
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self.c_name = None
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self.typecode = None
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self.fields = []
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for arg in args:
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if type(arg) != type(()) or len(arg) < 2:
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continue
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if arg[0] == 'in-module':
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self.module = arg[1]
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elif arg[0] == 'c-name':
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self.c_name = arg[1]
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elif arg[0] == 'gtype-id':
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self.typecode = arg[1]
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def write_defs(self, fp=sys.stdout):
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fp.write('(define-interface ' + self.name + '\n')
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if self.module:
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fp.write(' (in-module "' + self.module + '")\n')
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if self.c_name:
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fp.write(' (c-name "' + self.c_name + '")\n')
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if self.typecode:
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fp.write(' (gtype-id "' + self.typecode + '")\n')
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fp.write(')\n\n')
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class EnumDef(Definition):
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def __init__(self, name, *args):
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self.deftype = 'enum'
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self.name = name
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self.in_module = None
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self.c_name = None
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self.typecode = None
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self.values = []
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for arg in args:
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if type(arg) != type(()) or len(arg) < 2:
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continue
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if arg[0] == 'in-module':
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self.in_module = arg[1]
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elif arg[0] == 'c-name':
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self.c_name = arg[1]
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elif arg[0] == 'gtype-id':
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self.typecode = arg[1]
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elif arg[0] == 'values':
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for varg in arg[1:]:
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self.values.append((varg[0], varg[1]))
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def merge(self, old):
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pass
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def write_defs(self, fp=sys.stdout):
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fp.write('(define-' + self.deftype + ' ' + self.name + '\n')
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if self.in_module:
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fp.write(' (in-module "' + self.in_module + '")\n')
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fp.write(' (c-name "' + self.c_name + '")\n')
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fp.write(' (gtype-id "' + self.typecode + '")\n')
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if self.values:
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fp.write(' (values\n')
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for name, val in self.values:
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fp.write(' \'("' + name + '" "' + val + '")\n')
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fp.write(' )\n')
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fp.write(')\n\n')
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class FlagsDef(EnumDef):
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def __init__(self, *args):
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apply(EnumDef.__init__, (self,) + args)
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self.deftype = 'flags'
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class BoxedDef(Definition):
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def __init__(self, name, *args):
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self.name = name
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self.module = None
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self.c_name = None
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self.typecode = None
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self.copy = None
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self.release = None
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self.fields = []
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for arg in args:
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if type(arg) != type(()) or len(arg) < 2:
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continue
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if arg[0] == 'in-module':
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self.module = arg[1]
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elif arg[0] == 'c-name':
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self.c_name = arg[1]
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elif arg[0] == 'gtype-id':
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self.typecode = arg[1]
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elif arg[0] == 'copy-func':
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self.copy = arg[1]
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elif arg[0] == 'release-func':
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self.release = arg[1]
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elif arg[0] == 'fields':
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for parg in arg[1:]:
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self.fields.append((parg[0], parg[1]))
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def merge(self, old):
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# currently the .h parser doesn't try to work out what fields of
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# an object structure should be public, so we just copy the list
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# from the old version ...
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self.fields = old.fields
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def write_defs(self, fp=sys.stdout):
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fp.write('(define-boxed ' + self.name + '\n')
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if self.module:
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fp.write(' (in-module "' + self.module + '")\n')
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if self.c_name:
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fp.write(' (c-name "' + self.c_name + '")\n')
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if self.typecode:
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fp.write(' (gtype-id "' + self.typecode + '")\n')
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if self.copy:
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fp.write(' (copy-func "' + self.copy + '")\n')
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if self.release:
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fp.write(' (release-func "' + self.release + '")\n')
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if self.fields:
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fp.write(' (fields\n')
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for (ftype, fname) in self.fields:
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fp.write(' \'("' + ftype + '" "' + fname + '")\n')
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fp.write(' )\n')
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fp.write(')\n\n')
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class PointerDef(Definition):
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def __init__(self, name, *args):
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self.name = name
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self.module = None
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self.c_name = None
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self.typecode = None
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self.fields = []
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for arg in args:
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if type(arg) != type(()) or len(arg) < 2:
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continue
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if arg[0] == 'in-module':
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self.module = arg[1]
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elif arg[0] == 'c-name':
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self.c_name = arg[1]
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elif arg[0] == 'gtype-id':
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self.typecode = arg[1]
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elif arg[0] == 'fields':
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for parg in arg[1:]:
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self.fields.append((parg[0], parg[1]))
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def merge(self, old):
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# currently the .h parser doesn't try to work out what fields of
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# an object structure should be public, so we just copy the list
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# from the old version ...
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self.fields = old.fields
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def write_defs(self, fp=sys.stdout):
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fp.write('(define-pointer ' + self.name + '\n')
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if self.module:
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fp.write(' (in-module "' + self.module + '")\n')
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if self.c_name:
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fp.write(' (c-name "' + self.c_name + '")\n')
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if self.typecode:
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fp.write(' (gtype-id "' + self.typecode + '")\n')
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if self.fields:
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fp.write(' (fields\n')
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for (ftype, fname) in self.fields:
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fp.write(' \'("' + ftype + '" "' + fname + '")\n')
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fp.write(' )\n')
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fp.write(')\n\n')
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class MethodDef(Definition):
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def __init__(self, name, *args):
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dump = 0
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self.name = name
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self.ret = None
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self.caller_owns_return = None
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self.c_name = None
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self.typecode = None
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self.of_object = None
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self.params = [] # of form (type, name, default, nullok)
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self.varargs = 0
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self.deprecated = None
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for arg in args:
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if type(arg) != type(()) or len(arg) < 2:
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continue
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if arg[0] == 'of-object':
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self.of_object = arg[1]
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elif arg[0] == 'c-name':
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self.c_name = arg[1]
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elif arg[0] == 'gtype-id':
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self.typecode = arg[1]
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elif arg[0] == 'return-type':
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self.ret = arg[1]
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elif arg[0] == 'caller-owns-return':
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self.caller_owns_return = arg[1] in ('t', '#t')
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elif arg[0] == 'parameters':
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for parg in arg[1:]:
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ptype = parg[0]
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pname = parg[1]
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pdflt = None
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pnull = 0
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for farg in parg[2:]:
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if farg[0] == 'default':
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pdflt = farg[1]
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elif farg[0] == 'null-ok':
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pnull = 1
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self.params.append((ptype, pname, pdflt, pnull))
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elif arg[0] == 'varargs':
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self.varargs = arg[1] in ('t', '#t')
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elif arg[0] == 'deprecated':
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self.deprecated = arg[1]
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else:
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sys.stderr.write("Warning: %s argument unsupported.\n"
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% (arg[0]))
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dump = 1
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if dump:
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self.write_defs(sys.stderr)
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if self.caller_owns_return is None and self.ret is not None:
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if self.ret[:6] == 'const-':
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self.caller_owns_return = 0
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elif self.ret in ('char*', 'gchar*', 'string'):
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self.caller_owns_return = 1
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else:
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self.caller_owns_return = 0
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for item in ('c_name', 'of_object'):
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if self.__dict__[item] == None:
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self.write_defs(sys.stderr)
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raise RuntimeError, "definition missing required %s" % (item,)
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def merge(self, old):
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# here we merge extra parameter flags accross to the new object.
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for i in range(len(self.params)):
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ptype, pname, pdflt, pnull = self.params[i]
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for p2 in old.params:
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if p2[1] == pname:
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self.params[i] = (ptype, pname, p2[2], p2[3])
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break
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def write_defs(self, fp=sys.stdout):
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fp.write('(define-method ' + self.name + '\n')
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if self.of_object != (None, None):
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fp.write(' (of-object "' + self.of_object + '")\n')
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if self.c_name:
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fp.write(' (c-name "' + self.c_name + '")\n')
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if self.typecode:
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fp.write(' (gtype-id "' + self.typecode + '")\n')
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if self.ret:
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fp.write(' (return-type "' + self.ret + '")\n')
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if self.deprecated:
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fp.write(' (deprecated "' + self.deprecated + '")\n')
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if self.params:
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fp.write(' (parameters\n')
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for ptype, pname, pdflt, pnull in self.params:
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fp.write(' \'("' + ptype + '" "' + pname +'"')
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if pdflt: fp.write(' (default "' + pdflt + '")')
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if pnull: fp.write(' (null-ok)')
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fp.write(')\n')
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fp.write(' )\n')
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fp.write(')\n\n')
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class FunctionDef(Definition):
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def __init__(self, name, *args):
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dump = 0
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self.name = name
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self.in_module = None
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self.is_constructor_of = None
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self.ret = None
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self.caller_owns_return = None
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self.c_name = None
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self.typecode = None
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self.params = [] # of form (type, name, default, nullok)
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self.varargs = 0
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self.deprecated = None
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for arg in args:
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if type(arg) != type(()) or len(arg) < 2:
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continue
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if arg[0] == 'in-module':
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self.in_module = arg[1]
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elif arg[0] == 'is-constructor-of':
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self.is_constructor_of = arg[1]
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elif arg[0] == 'c-name':
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self.c_name = arg[1]
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elif arg[0] == 'gtype-id':
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self.typecode = arg[1]
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elif arg[0] == 'return-type':
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self.ret = arg[1]
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elif arg[0] == 'caller-owns-return':
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self.caller_owns_return = arg[1] in ('t', '#t')
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elif arg[0] == 'parameters':
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for parg in arg[1:]:
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ptype = parg[0]
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pname = parg[1]
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pdflt = None
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pnull = 0
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for farg in parg[2:]:
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if farg[0] == 'default':
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pdflt = farg[1]
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elif farg[0] == 'null-ok':
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pnull = 1
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self.params.append((ptype, pname, pdflt, pnull))
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elif arg[0] == 'varargs':
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self.varargs = arg[1] in ('t', '#t')
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elif arg[0] == 'deprecated':
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self.deprecated = arg[1]
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else:
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sys.stderr.write("Warning: %s argument unsupported\n"
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% (arg[0],))
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dump = 1
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if dump:
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self.write_defs(sys.stderr)
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if self.caller_owns_return is None and self.ret is not None:
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if self.ret[:6] == 'const-':
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self.caller_owns_return = 0
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elif self.is_constructor_of:
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self.caller_owns_return = 1
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elif self.ret in ('char*', 'gchar*', 'string'):
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self.caller_owns_return = 1
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else:
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self.caller_owns_return = 0
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for item in ('c_name',):
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if self.__dict__[item] == None:
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self.write_defs(sys.stderr)
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raise RuntimeError, "definition missing required %s" % (item,)
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_method_write_defs = MethodDef.__dict__['write_defs']
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def merge(self, old):
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# here we merge extra parameter flags accross to the new object.
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for i in range(len(self.params)):
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ptype, pname, pdflt, pnull = self.params[i]
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for p2 in old.params:
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if p2[1] == pname:
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self.params[i] = (ptype, pname, p2[2], p2[3])
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break
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if not self.is_constructor_of:
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try:
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self.is_constructor_of = old.is_constructor_of
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except AttributeError:
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pass
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if isinstance(old, MethodDef):
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self.name = old.name
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# transmogrify from function into method ...
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self.write_defs = self._method_write_defs
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self.of_object = old.of_object
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del self.params[0]
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def write_defs(self, fp=sys.stdout):
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fp.write('(define-function ' + self.name + '\n')
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if self.in_module:
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fp.write(' (in-module "' + self.in_module + '")\n')
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if self.is_constructor_of:
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fp.write(' (is-constructor-of "' + self.is_constructor_of +'")\n')
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if self.c_name:
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fp.write(' (c-name "' + self.c_name + '")\n')
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if self.typecode:
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fp.write(' (gtype-id "' + self.typecode + '")\n')
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if self.ret:
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fp.write(' (return-type "' + self.ret + '")\n')
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if self.deprecated:
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fp.write(' (deprecated "' + self.deprecated + '")\n')
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if self.params:
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fp.write(' (parameters\n')
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for ptype, pname, pdflt, pnull in self.params:
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fp.write(' \'("' + ptype + '" "' + pname +'"')
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if pdflt: fp.write(' (default "' + pdflt + '")')
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if pnull: fp.write(' (null-ok)')
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fp.write(')\n')
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fp.write(' )\n')
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fp.write(')\n\n')
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