Merge from trunk

[plcapi.git] / trunk / psycopg2 / psycopg / typecast.h

diff --git a/trunk/psycopg2/psycopg/typecast.h b/trunk/psycopg2/psycopg/typecast.h
new file mode 100644 (file)
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+++ b/trunk/psycopg2/psycopg/typecast.h
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+/* typecast.h - definitions for typecasters
+ *
+ * Copyright (C) 2003 Federico Di Gregorio <fog@debian.org>
+ *
+ * This file is part of psycopg.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef PSYCOPG_TYPECAST_H
+#define PSYCOPG_TYPECAST_H 1
+
+#include <Python.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* type of type-casting functions (both C and Python) */
+typedef PyObject *(*typecast_function)(char *, int len, PyObject *);
+
+/** typecast type **/
+
+extern PyTypeObject typecastType;
+
+typedef struct {
+    PyObject_HEAD
+
+    PyObject *name;    /* the name of this type */
+    PyObject *values;  /* the different types this instance can match */
+
+    typecast_function  ccast;  /* the C casting function */
+    PyObject          *pcast;  /* the python casting function */
+    PyObject          *bcast;  /* base cast, used by array typecasters */
+} typecastObject;
+
+/* the initialization values are stored here */
+
+typedef struct {
+    char *name;
+    long int *values;
+    typecast_function cast;
+
+    /* base is the base typecaster for arrays */
+    char *base;
+} typecastObject_initlist;
+
+/* the type dictionary, much faster to access it globally */
+extern PyObject *psyco_types;
+extern PyObject *psyco_binary_types;
+    
+/* the default casting objects, used when no other objects are available */
+extern PyObject *psyco_default_cast;
+extern PyObject *psyco_default_binary_cast;
+
+/** exported functions **/
+
+/* used by module.c to init the type system and register types */
+extern int typecast_init(PyObject *dict);
+extern int typecast_add(PyObject *obj, int binary);
+
+/* the C callable typecastObject creator function */
+extern PyObject *typecast_from_c(typecastObject_initlist *type, PyObject *d);
+
+/* the python callable typecast creator function */
+extern PyObject *typecast_from_python(
+    PyObject *self, PyObject *args, PyObject *keywds);
+
+/* the function used to dispatch typecasting calls */
+extern PyObject *typecast_cast(
+    PyObject *self, char *str, int len, PyObject *curs);
+    
+#endif /* !defined(PSYCOPG_TYPECAST_H) */