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/********************************************************************
* Description: interpl.cc
* Mechanism for queueing NML messages, used by the interpreter and
* canonical interface to report list of NML statements from program
* files to HME.
*
* Derived from a work by Fred Proctor & Will Shackleford
*
* Author:
* License: GPL Version 2
* System: Linux
*
* Copyright (c) 2004 All rights reserved.
*
* Last change:
********************************************************************/
#include <string.h> /* memcpy() */
#include "rcs.hh" // LinkedList
#include "interpl.hh" // these decls
#include "emc.hh"
#include "emcglb.h"
#include "linklist.hh"
#include "nmlmsg.hh" /* class NMLmsg */
#include "rcs_print.hh"
NML_INTERP_LIST interp_list; /* NML Union, for interpreter */
NML_INTERP_LIST::NML_INTERP_LIST()
{
linked_list_ptr = new LinkedList;
next_line_number = 0;
line_number = 0;
}
NML_INTERP_LIST::~NML_INTERP_LIST()
{
if (NULL != linked_list_ptr) {
delete linked_list_ptr;
linked_list_ptr = NULL;
}
}
int NML_INTERP_LIST::append(NMLmsg & nml_msg)
{
return append(&nml_msg);
}
// sets the line number used for subsequent appends
int NML_INTERP_LIST::set_line_number(int line)
{
next_line_number = line;
return 0;
}
int NML_INTERP_LIST::append(NMLmsg * nml_msg_ptr)
{
/* check for invalid data */
if (NULL == nml_msg_ptr) {
rcs_print_error
("NML_INTERP_LIST::append : attempt to append NULL msg\n");
return -1;
}
if (0 == nml_msg_ptr->type) {
rcs_print_error
("NML_INTERP_LIST::append : attempt to append 0 type\n");
return -1;
}
if (nml_msg_ptr->size > MAX_NML_COMMAND_SIZE - 64) {
rcs_print_error
("NML_INTERP_LIST::append : command size is too large.");
return -1;
}
if (nml_msg_ptr->size < 4) {
rcs_print_error
("NML_INTERP_LIST::append : command size is invalid.");
return -1;
}
#ifdef DEBUG_INTERPL
if (sizeof(temp_node) < MAX_NML_COMMAND_SIZE + 4 ||
sizeof(temp_node) > MAX_NML_COMMAND_SIZE + 16 ||
((void *) &temp_node.line_number) >
((void *) &temp_node.command.commandbuf)) {
rcs_print_error
("NML_INTERP_LIST::append : assumptions about NML_INTERP_LIST_NODE have been violated.");
return -1;
}
#endif
if (NULL == linked_list_ptr) {
return -1;
}
// fill in the NML_INTERP_LIST_NODE
temp_node.line_number = next_line_number;
memcpy(temp_node.command.commandbuf, nml_msg_ptr, nml_msg_ptr->size);
// stick it on the list
linked_list_ptr->store_at_tail(&temp_node,
nml_msg_ptr->size +
sizeof(temp_node.line_number) +
sizeof(temp_node.dummy) + 32 + (32 -
nml_msg_ptr->
size %
32), 1);
if (emc_debug & EMC_DEBUG_INTERP_LIST) {
rcs_print
("NML_INTERP_LIST::append(nml_msg_ptr{size=%ld,type=%s}) : list_size=%d, line_number=%d\n",
nml_msg_ptr->size, emc_symbol_lookup(nml_msg_ptr->type),
linked_list_ptr->list_size, temp_node.line_number);
}
return 0;
}
NMLmsg *NML_INTERP_LIST::get()
{
NMLmsg *ret;
NML_INTERP_LIST_NODE *node_ptr;
if (NULL == linked_list_ptr) {
line_number = 0;
return NULL;
}
node_ptr = (NML_INTERP_LIST_NODE *) linked_list_ptr->retrieve_head();
if (NULL == node_ptr) {
line_number = 0;
return NULL;
}
// save line number of this one, for use by get_line_number
line_number = node_ptr->line_number;
// get it off the front
ret = (NMLmsg *) ((char *) node_ptr->command.commandbuf);
return ret;
}
void NML_INTERP_LIST::clear()
{
if (NULL != linked_list_ptr) {
linked_list_ptr->delete_members();
}
}
void NML_INTERP_LIST::print()
{
NMLmsg *ret;
NML_INTERP_LIST_NODE *node_ptr;
int line_number;
if (NULL == linked_list_ptr) {
return;
}
node_ptr = (NML_INTERP_LIST_NODE *) linked_list_ptr->get_head();
rcs_print("NML_INTERP_LIST::print(): list size=%d\n",linked_list_ptr->list_size);
while (NULL != node_ptr) {
line_number = node_ptr->line_number;
ret = (NMLmsg *) ((char *) node_ptr->command.commandbuf);
rcs_print("--> type=%s, line_number=%d\n",
emc_symbol_lookup((int)ret->type),
line_number);
node_ptr = (NML_INTERP_LIST_NODE *) linked_list_ptr->get_next();
}
rcs_print("\n");
}
int NML_INTERP_LIST::len()
{
if (NULL == linked_list_ptr) {
return 0;
}
return ((int) linked_list_ptr->list_size);
}
int NML_INTERP_LIST::get_line_number()
{
return line_number;
}
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