Include/node.h

   1 #ifndef Py_NODE_H
   2 #define Py_NODE_H
   3 #ifdef __cplusplus
   4 extern "C" {
   5 #endif
   6
   7 /***********************************************************
   8 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
   9 The Netherlands.
  10
  11                         All Rights Reserved
  12
  13 Permission to use, copy, modify, and distribute this software and its
  14 documentation for any purpose and without fee is hereby granted,
  15 provided that the above copyright notice appear in all copies and that
  16 both that copyright notice and this permission notice appear in
  17 supporting documentation, and that the names of Stichting Mathematisch
  18 Centrum or CWI or Corporation for National Research Initiatives or
  19 CNRI not be used in advertising or publicity pertaining to
  20 distribution of the software without specific, written prior
  21 permission.
  22
  23 While CWI is the initial source for this software, a modified version
  24 is made available by the Corporation for National Research Initiatives
  25 (CNRI) at the Internet address ftp://ftp.python.org.
  26
  27 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
  28 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
  29 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
  30 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
  31 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  32 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  33 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  34 PERFORMANCE OF THIS SOFTWARE.
  35
  36 ******************************************************************/
  37
  38 /* Parse tree node interface */
  39
  40 typedef struct _node {
  41         short           n_type;
  42         char            *n_str;
  43         short           n_lineno;
  44         short           n_nchildren;
  45         struct _node    *n_child;
  46 } node;
  47
  48 extern node *PyNode_New Py_PROTO((int type));
  49 extern node *PyNode_AddChild Py_PROTO((node *n, int type, char *str, int lineno));
  50 extern void PyNode_Free Py_PROTO((node *n));
  51
  52 /* Node access functions */
  53 #define NCH(n)          ((n)->n_nchildren)
  54 #define CHILD(n, i)     (&(n)->n_child[i])
  55 #define TYPE(n)         ((n)->n_type)
  56 #define STR(n)          ((n)->n_str)
  57
  58 /* Assert that the type of a node is what we expect */
  59 #ifndef Py_DEBUG
  60 #define REQ(n, type) { /*pass*/ ; }
  61 #else
  62 #define REQ(n, type) \
  63         { if (TYPE(n) != (type)) { \
  64                 fprintf(stderr, "FATAL: node type %d, required %d\n", \
  65                         TYPE(n), type); \
  66                 abort(); \
  67         } }
  68 #endif
  69
  70 extern void PyNode_ListTree Py_PROTO((node *));
  71
  72 #ifdef __cplusplus
  73 }
  74 #endif
  75 #endif /* !Py_NODE_H */