cpython/Modules/newmodule.c

/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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/* Module new -- create new objects of various types */

#include "allobjects.h"
#include "compile.h"

static char new_instance_doc[] =
"Create an instance object from (CLASS, DICT) without calling its __init__().";

static object *
new_instance(unused, args)
	object* unused;
	object* args;
{
	object* klass;
	object *dict;
	instanceobject *inst;
	if (!newgetargs(args, "O!O!",
			&Classtype, &klass,
			&Dicttype, &dict))
		return NULL;
	inst = NEWOBJ(instanceobject, &Instancetype);
	if (inst == NULL)
		return NULL;
	INCREF(klass);
	INCREF(dict);
	inst->in_class = (classobject *)klass;
	inst->in_dict = dict;
	return (object *)inst;
}

static char new_im_doc[] =
"Create a instance method object from (FUNCTION, INSTANCE, CLASS).";

static object *
new_instancemethod(unused, args)
	object* unused;
	object* args;
{
	object* func;
	object* self;
	object* classObj;

	if (!newgetargs(args, "O!O!O!",
			&Functype, &func,
			&Instancetype, &self,
			&Classtype, &classObj))
		return NULL;
	return newinstancemethodobject(func, self, classObj);
}

static char new_function_doc[] =
"Create a function object from (CODE, GLOBALS, [NAME, ARGDEFS]).";

static object *
new_function(unused, args)
	object* unused;
	object* args;
{
	object* code;
	object* globals;
	object* name = None;
	object* defaults = None;
	funcobject* newfunc;

	if (!newgetargs(args, "O!O!|SO!",
			&Codetype, &code,
			&Mappingtype, &globals,
			&name,
			&Tupletype, &defaults))
		return NULL;

	newfunc = (funcobject *)newfuncobject(code, globals);
	if (newfunc == NULL)
		return NULL;

	if (name != None) {
		XINCREF(name);
		XDECREF(newfunc->func_name);
		newfunc->func_name = name;
	}
	if (defaults != NULL) {
		XINCREF(defaults);
		XDECREF(newfunc->func_defaults);
		newfunc->func_defaults  = defaults;
	}

	return (object *)newfunc;
}

static char new_code_doc[] =
"Create a code object from (ARGCOUNT, NLOCALS, FLAGS, CODESTRING, CONSTANTS, NAMES, VARNAMES, FILENAME, NAME).";

static object *
new_code(unused, args)
	object* unused;
	object* args;
{
	int argcount;
	int nlocals;
	int flags;
	object* code;
	object* consts;
	object* names;
	object* varnames;
	object* filename;
	object* name;
  
	if (!newgetargs(args, "iiiSO!O!O!SS",
			&argcount, &nlocals, &flags,	/* These are new */
			&code, &Tupletype, &consts, &Tupletype, &names,
			&Tupletype, &varnames,		/* These are new */
			&filename, &name))
		return NULL;
	return (object *)newcodeobject(argcount, nlocals, flags,
		code, consts, names, varnames, filename, name);
}

static char new_module_doc[] =
"Create a module object from (NAME).";

static object *
new_module(unused, args)
	object* unused;
	object* args;
{
	char *name;
  
	if (!newgetargs(args, "s", &name))
		return NULL;
	return newmoduleobject(name);
}

static char new_class_doc[] =
"Create a class object from (NAME, BASE_CLASSES, DICT).";

static object *
new_class(unused, args)
	object* unused;
	object* args;
{
	object * name;
	object * classes;
	object * dict;
  
	if (!newgetargs(args, "SO!O!", &name, &Tupletype, &classes,
			&Mappingtype, &dict))
		return NULL;
	return newclassobject(classes, dict, name);
}

static struct methodlist new_methods[] = {
	{"instance",		new_instance,		1, new_instance_doc},
	{"instancemethod",	new_instancemethod,	1, new_im_doc},
	{"function",		new_function,		1, new_function_doc},
	{"code",		new_code,		1, new_code_doc},
	{"module",		new_module,		1, new_module_doc},
	{"classobj",		new_class,		1, new_class_doc},
	{NULL,			NULL}		/* sentinel */
};

char new_doc[] =
"Functions to create new objects used by the interpreter.\n\
\n\
You need to know a great deal about the interpreter to use this!";

void
initnew()
{
	initmodule4("new", new_methods, new_doc, (object *)NULL,
		    PYTHON_API_VERSION);
}