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/* This file is part of the Project Athena Zephyr Notification System.
* It is one of the source files comprising zwgc, the Zephyr WindowGram
* client.
*
* Created by: Marc Horowitz <marc@athena.mit.edu>
*
* $Id$
*
* Copyright (c) 1989 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include <zephyr/mit-copyright.h>
#ifndef node_MODULE
#define node_MODULE
#include "new_string.h"
#define STRING_CONSTANT_OPCODE 0
#define VARREF_OPCODE 1
#define VARNAME_OPCODE 2
#define NOT_OPCODE 3
#define PLUS_OPCODE 4
#define AND_OPCODE 5
#define OR_OPCODE 6
#define EQ_OPCODE 7
#define NEQ_OPCODE 8
#define REGEQ_OPCODE 9
#define REGNEQ_OPCODE 10
#define BUFFER_OPCODE 11
#define SUBSTITUTE_OPCODE 12
#define PROTECT_OPCODE 13
#define VERBATIM_OPCODE 14
#define STYLESTRIP_OPCODE 15
#define GETENV_OPCODE 16
#define UPCASE_OPCODE 17
#define DOWNCASE_OPCODE 18
#define ZVAR_OPCODE 19
#define GET_OPCODE 20
#define LANY_OPCODE 21
#define RANY_OPCODE 22
#define LBREAK_OPCODE 23
#define RBREAK_OPCODE 24
#define LSPAN_OPCODE 25
#define RSPAN_OPCODE 26
#define LAST_EXPR_OPCODE 26
#define NOOP_OPCODE 27
#define SET_OPCODE 28
#define FIELDS_OPCODE 29
#define PRINT_OPCODE 30
#define CLEARBUF_OPCODE 31
#define APPENDPORT_OPCODE 32
#define EXECPORT_OPCODE 33
#define INPUTPORT_OPCODE 34
#define OUTPUTPORT_OPCODE 35
#define PUT_OPCODE 36
#define CLOSEINPUT_OPCODE 37
#define CLOSEOUTPUT_OPCODE 38
#define CLOSEPORT_OPCODE 39
#define EXEC_OPCODE 40
#define IF_STMT_OPCODE 41
#define CASE_OPCODE 42
#define WHILE_OPCODE 43
#define BREAK_OPCODE 44
#define EXIT_OPCODE 45
#define IF_OPCODE 46
#define ELSEIF_OPCODE 47
#define ELSE_OPCODE 48
#define MATCHLIST_OPCODE 49
#define DEFAULT_OPCODE 50
#define NUMBER_OF_OPCODES 51
typedef struct _Node {
int opcode; /* Read-only */
struct _Node *next;
union {
string string_constant;
struct {
struct _Node *first;
struct _Node *second;
} nodes;
} d;
} Node;
/* Function externs */
extern void node_DestroyAllNodes(void);
extern Node *node_create_string_constant(int, string);
extern Node *node_create_noary(int);
extern Node *node_create_unary(int, Node *);
extern Node *node_create_binary(int, Node *, Node *);
/*
* Node *reverse_list_of_nodes(Node *list)
* Modifies: the nodes on the linked list list
* Effects: Reverses the linked list list and returns it.
* This is done by modifing the next pointers of the
* list elements to point to the previous node & returning
* the address of the (previously) last node.
*/
extern Node *reverse_list_of_nodes(Node *);
#ifdef DEBUG
extern void node_display(Node *);
#endif
#endif
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