Overview
Comment:"mtt -ibg rc odeso view" now works!
Still some remaining issues, particularly ports/aliasing.
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SHA3-256: 91f366b67b3f95756f9addb8b1f6b35dafe9fa7ef434be51b59bbeded351eb65
User & Date: geraint@users.sourceforge.net on 2003-04-13 14:22:37
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Context
2003-04-13
14:59:18
rc2 now works. Clutch plot is upside down !? check-in: e6fd0c6207 user: geraint@users.sourceforge.net tags: origin/master, trunk
14:22:37
"mtt -ibg rc odeso view" now works!
Still some remaining issues, particularly ports/aliasing.
check-in: 91f366b67b user: geraint@users.sourceforge.net tags: origin/master, trunk
2003-04-12
21:06:26
*** empty log message *** check-in: 592b2dc722 user: geraint@users.sourceforge.net tags: origin/master, trunk
Changes

Modified mttroot/mtt/bin/trans/m/ibg2abg.m from [f87d930b16] to [7d20a69f04].

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## -*-octave-*-

function [bonds,components,n_vector_bonds] = \
      ibg2abg(name,bonds,infofile,errorfile)

  ## write useful quantity of data to log
  struct_levels_to_print = 4;



  ###############################################
  ## Extract data from bonds structure (ibg.m) ##
  ###############################################
  ################################
  ## create component structure ##
  ################################
  disp("--- Started extracting bonds data ---")

  
  ## unique number for each (sub-) bond
  bond_number = 0;

  ## loop over each bond in ibg.m file
  ## extract data from each bond
  for [bond, bond_name] = bonds
    i = str2num(split(bond_name, "bond")(2,:))
    i = str2num(split(bond_name, "bond")(2,:));

    ## extract type and name of component at each end
    head.name = deblank(split(bond.head.component, ":")(2,:));
    head.type = deblank(split(bond.head.component, ":")(1,:));
    tail.name = deblank(split(bond.tail.component, ":")(2,:));
    tail.type = deblank(split(bond.tail.component, ":")(1,:));
    ## populate "head" and "tail" structures
    ## then copy the contents to an overall structure

    ## capture directional info
    head.end = "head";
    ## track (signed) vector bond number within each component
    head.index = +i
    tail.end = "tail";

    ## assign vector bond index
    head.index = i;
    tail.index = i;
    tail.index = -i

    ## extract type of component at each end
    head_type = deblank(split(bond.head.component, ":")(1,:));
    tail_type = deblank(split(bond.tail.component, ":")(1,:));

    ## determine if internal port (and fix name) or subsystem
    if (strcmp(head.type, "SS") & (index(head.name, "[") == 1))
      head.is_port = true;
      head.name = mtt_strip_name(head.name);
    ## extract name of component at each end
    else
      head.is_port = false;
    head_name = deblank(split(bond.head.component, ":")(2,:));
    endif
    if (strcmp(tail.type, "SS") & (index(tail.name, "[") == 1))
      tail.is_port = true;
      tail.name = mtt_strip_name(tail.name);
    tail_name = deblank(split(bond.tail.component, ":")(2,:));
    else
      tail.is_port = false;
    endif

    ## determine if junction
    ## extract port label data
    if (strcmp(head.type, "0") | (strcmp(head.type, "1")))
      head.is_junction = true;
    else
    head.label = bond.head.ports;
    tail.label = bond.tail.ports;
      head.is_junction = false;
    endif
    if (strcmp(tail.type, "0") | (strcmp(tail.type, "1")))
      tail.is_junction = true;
    else
      tail.is_junction = false;
    endif

    ## determine whether internal port or subsystem
    ## assign (vector) port names
    ## and fix names of ports
    if (! head.is_junction)
      if (strcmp(bond.head.ports, "[]"))
	head.label = "in";
	mtt_info(sprintf("Defaulting port name %s on component %s (%s)",
    if (strcmp(head_type, "SS") & (index(head_name, "[") == 1))
      head_comp_or_port = "port";
      head_name = mtt_strip_name(head_name);
			 head.label, head.name, head.type), infofile);
      else
	head.label = mtt_strip_name(bond.head.ports);
      endif
    else
      head_comp_or_port = "comp";
    endif
    endif
    if (! tail.is_junction)
      if (strcmp(bond.tail.ports, "[]"))
	tail.label = "out";
	mtt_info(sprintf("Defaulting port name %s on component %s (%s)",
    if (strcmp(tail_type, "SS") & (index(tail_name, "[") == 1))
      tail_comp_or_port = "port";
      tail_name = mtt_strip_name(tail_name);
			 tail.label, tail.name, tail.type), infofile);
      else
	tail.label = mtt_strip_name(bond.tail.ports);
    else
      tail_comp_or_port = "comp";
      endif
    endif

    ## apply aliases
      if (! head.is_junction)
      head.alias = eval(sprintf("%s_alias", head.type));
      if (is_struct(head.alias))
	if (struct_contains(head.alias, head.label))
    eval(sprintf("comp_s.%s.%s.type = '%s'",
		 head_comp_or_port, head_name, head_type));
    eval(sprintf("comp_s.%s.%s.type = '%s'",
		 tail_comp_or_port, tail_name, tail_type));

	  old_name = head.label;
	  new_name = eval(sprintf("head.alias.%s", old_name));
	  head.label = new_name;	
	  mtt_info(sprintf("Aliasing [%s]\t on component %s (%s) to [%s]",
			   old_name, head.name, head.type, new_name), \
    eval(sprintf("comp_s.%s.%s.bond%i = head", 
		 head_comp_or_port, head_name, i));
    eval(sprintf("comp_s.%s.%s.bond%i = tail", 
		 tail_comp_or_port, tail_name, i));
		   infofile);
	endif
  endfor    
      endif
    endif
    if (!tail.is_junction)
      tail.alias = eval(sprintf("%s_alias", tail.type));
      if (is_struct(tail.alias))
	if (struct_contains(tail.alias, tail.label))
	  old_name = tail.label;
	  new_name = eval(sprintf("tail.alias.%s", old_name));
	  tail.label = new_name;	
	  mtt_info(sprintf("Aliasing [%s]\t on component %s (%s) to [%s]",
			   old_name, tail.name, tail.type, new_name), \
		   infofile);
	endif
      endif
    endif

    ## expand vector bonds
  ## comp_s
    disp("--- Expanding vector bonds ---");
    if (! (head.is_junction | tail.is_junction))
      ## junctions can't be expanded until all bonds are assigned      
      ## as label might occur on only one bond
  ##   comp
      [head.sub_bonds, head.n_sub_bonds] = split_port(head.label)
      [tail.sub_bonds, tail.n_sub_bonds] = split_port(tail.label)
      if (head.n_sub_bonds != tail.n_sub_bonds)
  ##     %s (name)
  ##       type
  ##       bond%i
	mtt_error(sprintf("Vector ports %s and %s are not compatible",
			  head.label, tail.label), errorfile);
  ##         label
      elseif (head.n_sub_bonds > 1)
	mtt_info(sprintf("Vector port %s matching %s",
  ##   port
			 head.label, tail.label), infofile);
      endif
    endif
    
  ##     %s (name)
  ##       type
  ##       bond%i
  ##         label

    ## assign unique number and causality to each sub-bond
    if (! (head.is_junction | tail.is_junction))
      for sub_bond = 1:head.n_sub_bonds
	++bond_number;
	
  ####################################################
  ## count number of vector bonds on each component ##
  ####################################################
	eval(sprintf("head.bond%i.index = %i", sub_bond, +bond_number));
	eval(sprintf("tail.bond%i.index = %i", sub_bond, -bond_number));
	

	## effort causality
	if (strcmp(bond.causality.effort, "head"))
  if (struct_contains(comp_s, "comp"))
	  causality(bond_number, 1) = +1;
	  head.causality = +1;
    for [comp, comp_name] = comp_s.comp
      n = size(struct_elements(comp))(1) - 1;
	elseif (strcmp(bond.causality.effort, "tail"))
	  causality(bond_number, 1) = -1;
      eval(sprintf("comp_s.comp.%s.n_bonds = %i",
	  head.causality = -1;
	else
	  causality(bond_number, 1) = 0;
		   comp_name, n));
    endfor
	  head.causality = 0;
	endif
  endif
	
	## flow causality
	if (strcmp(bond.causality.flow, "head"))
	  causality(bond_number, 2) = -1;
	  tail.causality = -1;
	elseif (strcmp(bond.causality.flow, "tail"))
	  causality(bond_number, 2) = +1;
	  tail.causality = +1;
	else
	  causality(bond_number, 2) = 0;
	  tail.causality = 0;
	endif
	
	eval(sprintf("head.bond%i.port = deblank(head.sub_bonds(%i,:))",
  
  if (struct_contains(comp_s, "port"))
    for [port, port_name] = comp_s.port
		     sub_bond, sub_bond));
	eval(sprintf("tail.port%i.port = deblank(tail.sub_bonds(%i,:))",
      n = size(struct_elements(port))(1) - 1;
      eval(sprintf("comp_s.port.%s.n_bonds = %i",
		     sub_bond, sub_bond));
	
      endfor
		   port_name, n));
    endfor
    else
      ## save bond causality data within junction for later use
      head.causality.effort = bond.causality.effort;
      tail.causality.effort = bond.causality.effort;
      head.causality.flow   = bond.causality.flow;
      tail.causality.flow   = bond.causality.flow;
    endif
  endif

    ## copy bond data to component structure (comp_s)
    if (head.is_port)
      S = sprintf("comp_s.port.%s", head.name);
      eval(sprintf("%s.vec_bond%i = head", S, i));
      eval(sprintf("%s.name = '%s'", S, head.name));

    else
      S = sprintf("comp_s.comp.%s", head.name);
  ## comp_s
      eval(sprintf("%s.vec_bond%i = head", S, i));
      eval(sprintf("%s.name = '%s'", S, head.name));
      eval(sprintf("%s.type = '%s'", S, head.type));
    endif

    if (tail.is_port)
      S = sprintf("comp_s.port.%s", tail.name);
  ##   comp
  ##     %s (name)
  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label
  ##   port
  ##     %s (name)
      eval(sprintf("%s.vec_bond%i = tail", S, i));
      eval(sprintf("%s.name = '%s'", S, tail.name));
    else
      S = sprintf("comp_s.comp.%s", tail.name);
      eval(sprintf("%s.vec_bond%i = tail", S, i));
      eval(sprintf("%s.name = '%s'", S, tail.name));
      eval(sprintf("%s.type = '%s'", S, tail.type));
    endif
  endfor

  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label
  disp("--- Finished extracting bond data ---");

  #############################
  ########################################################
  ## Expand vector junctions ##
  #############################
  ## ensure labels exist on all ports of each component ##
  ########################################################

  if (struct_contains(comp_s, "comp"))
    for [comp, comp_name] = comp_s.comp
      if (strcmp(comp.type, "0") | strcmp(comp.type, "1"))

	n_ports = size(struct_elements(comp), 1) - 2;
	
	## component is a junction
	## subtracted 2 for name and type
	n_named_ports = 0;

	
	## get labelled ports
	for [vec_bond, vec_bond_name] = comp
	  if (! exist("vec_bond.label"))
	    vec_bond.label = "[]";
	  endif
	for [bond, bond_name] = comp
	  if (index(bond_name, "bond") == 1)
	    if (! exist("bond.label"))
	      bond.label = "[]";
	    endif
	  if (index(vec_bond_name, "vec_bond") == 1)
	    if (! strcmp(vec_bond.label, "[]"))
	    if (! strcmp(bond.label, "[]"))
	      n_named_ports += 1;
	      port_name = vec_bond.label;
	      port_label = bond.label;
	    endif
	  endif
	  eval(sprintf("comp.%s = vec_bond", vec_bond_name));
	  eval(sprintf("comp.%s = bond", bond_name));
	endfor

	
	## attach labels to unlabelled ports
	if (n_named_ports == 0)
	  for [vec_bond, vec_bond_name] = comp
	    if (index(vec_bond_name, "vec_bond") == 1)
	      vec_bond.label = "in";
	  for [bond, bond_name] = comp
	    if (index(bond_name, "bond") == 1)
	      bond.label = "in";
	    endif
	    eval(sprintf("comp.%s = vec_bond", vec_bond_name));
	    eval(sprintf("comp.%s = bond", bond_name));
	  endfor
	elseif (n_named_ports == 1)
	  mtt_info(sprintf("Defaulting all ports on junction %s to %s",
			   comp_name, port_name), infofile);
	  for [vec_bond, vec_bond_name] = comp
	    if (index(vec_bond_name, "vec_bond") == 1)
	      vec_bond.label = port_name;
	  mtt_info(sprintf("Defaulting all ports on junction %s to %s", \
			   comp_name, port_label), infofile);
	  for [bond, bond_name] = comp
	    if (index(bond_name, "bond") == 1)
	      bond.label = port_label;
	    endif
	    eval(sprintf("comp.%s = vec_bond", vec_bond_name));
	    eval(sprintf("comp.%s = bond", bond_name));
	  endfor
	elseif (n_named_ports != bond.n_bonds)
	  mtt_error(sprintf("Junction must have 0,1 or %i port labels", \
			    n_bonds), errorfile);
	endif
	
      else
	## component is not a junction
	for [bond, bond_name] = comp
	  if (index(bond_name, "bond") == 1)
	    if (strcmp(bond.label, "[]"))
	      if (bond.index > 0)
		bond.label = "in";
	      else
		bond.label = "out";
	      endif
	    else
	      bond.label = mtt_strip_name(bond.label);
	    endif
	  endif
	  eval(sprintf("comp.%s = bond", bond_name));
	endfor
      endif
      
      eval(sprintf("comp_s.comp.%s = comp", comp_name));
    endfor
  endif

  ####################
  ## expand aliases ##
  ####################

  if (struct_contains(comp_s, "comp"))
    for [comp, comp_name] = comp_s.comp
      if ((! strcmp(comp.type, "0")) & (! strcmp(comp.type, "1")))
	alias = eval(sprintf("%s_alias", comp.type));
	if (is_struct(alias))
	  for [bond, bond_name] = comp
	    if (struct_contains(alias, "bond.label"))
	      old_name = bond.label;
	      new_name = eval(sprintf("alias.%s", old_name));
	      bond.label = new_name;
	      mtt_info(sprintf("Aliasing [%s] on %s (%s) to [%s]",
			       old_name, comp_name, comp.type, new_name),
		       infofile);
	    endif
	    eval(sprintf("comp.%s = bond", bond_name));
	  endfor
	elseif ((n_named_ports != 0) && (n_named_ports != n_ports))
	  mtt_error(sprintf("Junction must have 0,1 or %i port labels", 
			    n_ports), errorfile);	  
	endif
#	eval(sprintf("comp.%s.%s = vec_bond", comp_name, vec_bond_name))
	eval(sprintf("comp_s.%s = comp", comp_name));
      endif
    endfor
  endif

	## expand vector bonds
	for [vec_bond, vec_bond_name] = comp
	  if (index(vec_bond_name, "vec_bond") == 1)
	    [sub_bonds, n_sub_bonds] = split_port(vec_bond.label)
	    for sub_bond = 1:n_sub_bonds
	      ++bond_number;
  ## comp_s
  ##   comp
  ##     %s (name)
  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label
  ##   port
  ##     %s (name)
  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label

	      if (strcmp(vec_bond.end, "head"))
		direction = +1;
	      else
  ##########################################
  ## create sub-bonds according to labels ##
		direction = -1;
	      endif
  ##########################################

	      eval(sprintf("vec_bond.bond%i.index = %i",
			   sub_bond, bond_number*direction));


  if (struct_contains(comp_s, "comp"))
    for [comp, comp_name] = comp_s.comp
      for [bond, bond_name] = comp
	if (index(bond_name, "bond") == 1)
	  [sub_bonds, n_sub_bonds] = split_port(bond.label);
	      ## causality
	      if (strcmp(vec_bond.causality.effort, "head"))
		causality(bond_number, 1) = +1;
	      elseif (strcmp(vec_bond.causality.effort, "tail"))
		causality(bond_number, 1) = -1;
	      else
		causality(bond_number, 1) = 0;
	      endif
	      if (strcmp(vec_bond.causality.flow, "head"))
		causality(bond_number, 2) = -1;
	      elseif (strcmp(vec_bond.causality.flow, "tail"))
		causality(bond_number, 2) = +1;
	      else
	  for i = 1:n_sub_bonds
	    eval(sprintf("bond.subbond%i.label = '%s'",
			 i, deblank(sub_bonds(i,:))))
	  endfor
	endif
	eval(sprintf("comp.%s = bond", bond_name));
      endfor
      eval(sprintf("comp_s.comp.%s = comp", comp_name));
    endfor
  endif

  if (struct_contains(comp_s, "port"))
    for [port, port_name] = comp_s.port
      for [bond, bond_name] = port
	if (index(bond_name, "bond") == 1)
	  [sub_bonds, n_sub_bonds] = split_port(bond.label);
	  for i = 1:n_sub_bonds
	    eval(sprintf("bond.subbond%i.label = '%s'",
			 i, deblank(sub_bonds(i,:))));
	  endfor
		causality(bond_number, 2) = 0;
	      endif
	    endfor
	  endif
	  eval(sprintf("comp.%s = vec_bond", vec_bond_name));
	endfor
     endif
     eval(sprintf("comp_s.comp.%s = comp", comp_name));
    endfor
  endif
  ## FIXME: add sub_bonds to junctions  

	endif
	eval(sprintf("port.%s = bond", bond_name));
      endfor
      eval(sprintf("comp_s.port.%s = comp", port_name));
    endfor
  endif

  ######################################################
  ## check that both ends of each bond are compatible ##  
  ######################################################

  for [bond, bond_name] = bonds
    ## FIXME:
    1;
  endfor

  ## comp_s
  ##   comp
  ##     %s (name)
  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label
  ##         subbond%i
  ##   port
  ##     %s (name)
  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label
  ##         subbond%i

  #########################################
  ## assign a unique number to each bond ##
  #########################################

  unique_bond_number = 0;
  
  for [bond, bond_name] = bonds
    i = str2num(split(bond_name, "bond")(2,:));

    ## extract type of component at each end
    head.type = deblank(split(bond.head.component, ":")(1,:));
    tail.type = deblank(split(bond.tail.component, ":")(1,:));

    ## extract name of component at each end
    head_name = deblank(split(bond.head.component, ":")(2,:));
    tail_name = deblank(split(bond.tail.component, ":")(2,:));
 
    ## determine whether internal port or subsystem
    ## and fix names of ports
    if (strcmp(head.type, "SS") & (index(head_name, "[") == 1))
      head_comp_or_port = "port";
      head_name = mtt_strip_name(head_name);
    else
      head_comp_or_port = "comp";
    endif
    if (strcmp(tail.type, "SS") & (index(tail_name, "[") == 1))
      tail_comp_or_port = "port";
      tail_name = mtt_strip_name(tail_name);
    else
      tail_comp_or_port = "comp";
    endif

    ## create strings to reference each component
    head_str = sprintf("comp_s.%s.%s.bond%i",
		       head_comp_or_port, head_name, i);
    tail_str = sprintf("comp_s.%s.%s.bond%i",
		       tail_comp_or_port, tail_name, i);
    
    head_bond = eval(head_str);
    tail_bond = eval(tail_str);
    
    ## check compatible sizes
    head.n_subs = size(struct_elements(head_bond))(1) - 2;
    tail.n_subs = size(struct_elements(tail_bond))(1) - 2;
    if (head.n_subs != tail.n_subs)
      mtt_error(sprintf("Vector ports %s and %s are not compatible",
			head_bond.label, tail_bond.label), errorfile);
    elseif (head.n_subs > 1)
      mtt_info(sprintf("Vector port %s matches %s",
		       head_bond.label, tail_bond.label), infofile);
    endif

    ## assign bond number
    for i = 1:head.n_subs
      ++unique_bond_number;
      eval(sprintf("%s.subbond%i.index = +%i",
		   head_str, i, unique_bond_number));
      eval(sprintf("%s.subbond%i.index = -%i",
		   tail_str, i, unique_bond_number));

      ## write causality for bond
      if (strcmp(bond.causality.effort, "head"))
	eval(sprintf("causality(%i,1) = +1", unique_bond_number));
      elseif (strcmp(bond.causality.effort, "tail"))
	eval(sprintf("causality(%i,1) = -1", unique_bond_number));
      else
	eval(sprintf("causality(%i,1) = 0", unique_bond_number));
      endif

      if (strcmp(bond.causality.flow, "head"))
	eval(sprintf("causality(%i,2) = -1", unique_bond_number));
      elseif (strcmp(bond.causality.flow, "tail"))
	eval(sprintf("causality(%i,2) = +1", unique_bond_number));
      else
	eval(sprintf("causality(%i,2) = 0", unique_bond_number));
      endif
      
    endfor
  endfor
  
  ## causality matrix is called "bonds"
  bonds = causality;

  ## comp_s
  ##   comp
  ##     %s (name)
  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label
  ##         subbond%i
  ##           index
  ##   port
  ##     %s (name)
  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label
  ##         subbond%i
  ##           index

  #################################
  ## Map component data to cmp.m ##
  ## map component data to cmp.m ##
  #################################

  ## count number of components
  if (struct_contains(comp_s, "comp"))
    n_comps = size(struct_elements(comp_s.comp), 1)
  else
    n_comps = 0;
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      this_name = mtt_strip_name(this_name)
    else
      comp_or_port = "comp";
    endif
    eval(sprintf("comp_s.%s.%s.index = cmp", comp_or_port, this_name));
  endfor

  disp("--- Finished reading _cmp.m ---");
comp_s
  ## comp_s
  ##   comp
  ##     %s (name)
  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label
  ##         subbond%i
  ##           index
  ##       index
  ##   port
  ##     %s (name)
  ##       type
  ##       n_bonds
  ##       bond%i
  ##         label
  ##         subbond%i
  ##           index
  ##       index

  ##########################
  ## Write n_vector_bonds ##
  ## write n_vector_bonds ##
  ##########################

  if (struct_contains(comp_s, "comp"))
  for [comp, comp_name] = comp_s.comp
    for [comp, comp_name] = comp_s.comp
    i = 0;
    for [val, key] = comp
      if (index(key, "vec_bond") == 1)
	++i;
      endif
    endfor
    n_vector_bonds(comp.index) = i;
  endfor
      n_vector_bonds(comp.index) = comp.n_bonds;
    endfor
  endif

  ###########################################
  ## Write connections matrix (components) ##
  ###########################################
  
  if (struct_contains(comp_s, "comp"))
    n_comps = size(struct_elements(comp_s.comp))(1);
  else
    n_comps = 0;
  endif

  components = zeros(n_comps, max(n_vector_bonds));

  if (struct_contains(comp_s, "comp"))
    for [comp, comp_name] = comp_s.comp
      counter = 0;
      bond_list = zeros(1, max(n_vector_bonds));
      for [vbond, vbond_name] = comp
	if (index(vbond_name, "vec_bond") == 1)
	  for [sbond, sbond_name] = vbond
	    if (index(sbond_name, "bond") == 1)
	      components(comp.index, ++counter) = sbond.index;
      for [bond, bond_name] = comp
	if (index(bond_name, "bond") == 1)
	  for [sub_bond, sub_bond_name] = bond
	    if (index(sub_bond_name, "subbond") == 1)
	      components(comp.index, ++counter) = sub_bond.index
	    endif
	  endfor
	endif
      endfor
    endfor
  endif

  if (struct_contains(comp_s, "port"))
    for [port, port_name] = comp_s.port
      counter = 0;
      for [bond, bond_name] = port
	if (index(bond_name, "bond") == 1)
	  for [sub_bond, sub_bond_name] = bond
	    if (index(sub_bond_name, "subbond") == 1)
	      components(port.index, ++counter) = subbond.index;
	    endif
	  endfor
	endif
      endfor
    endfor
  endif

  disp("--- Finished writing components ---")

endfunction


## TODO: to fix 1-label vector junctions
## TODO: to put error checks back in
## TODO: port_bond_list error (abg2cbg)

#   ##########################################
#   ## Assign names to all component ports  ##
#   ##########################################
#   disp("--- Assigning port names ---")

#   if (struct_contains(comp_S, "comp"))
#     for [comp, comp_name] = comp_S.comp
#       if (strcmp(comp.type, "0") || strcmp(comp.type, "1"))
# 	disp("---- default junctions ----")
# 	if (comp.named_ports == 1)
	  
# 	  ## one named port, find it ...
# 	  for [port, bond_number] = comp.ports
# 	    if (! strcmp(port.name, "[]"))
# 	      the_name = port.name
# 	    endif
# 	  endfor
	  
# 	  ## ... and name all remaining ports identically
# 	  mtt_info(sprintf("Defaulting all ports on junction %s to %s",
# 			   comp_name, the_name));
# 	  for [port, bond_number] = comp.ports
# 	    eval(sprintf("comp.ports.%s.name = the_name", bond_number));
# 	  endfor
	  
# 	elseif ((comp.named_ports != 0)
# 		&& (comp.named_ports != comp.n_vector_bonds))
# 	  mtt_error(sprintf("Junction %s must have 0, 1 or %i port \
# 						       labels", \
# 			    comp_name, comp.n_vector_bonds));
# 	endif
	
#       else
	
# 	## Not a junction
# 	unlabelled_ports = comp.n_vector_bonds - comp.named_ports;
# 	if (unlabelled_ports == 1)
	  
# 	  ## find the unlabelled port ...
# 	  for [port, bond_number] = comp.ports
# 	    if (strcmp(port.name, "[]"))
	      
# 	      ## ... and name it [in] or [out]
# 	      if (port.sign == +1)
# 		port_name = "[in]";
# 	      elseif (port.sign == -1)
# 		port_name = "[out]";
# 	      endif
# 	      eval(sprintf("comp.ports.%s.name = '%s'",
# 			   bond_number, port_name));
# 	      E = "Defaulting port name %s\t on component %s (%s)";
# 	      mtt_info(sprintf(E, port_name, comp_name, comp.type),
# 		       infofile);
# 	    endif
# 	  endfor
	  
# 	elseif (unlabelled_ports == 2)
	  
# 	  ## find the unlabelled ports ...
# 	  clear unlabelled_port1
# 	  for [port, bond_number] = comp.ports
# 	    if (strcmp(port.name, "[]"))
# 	      if (exist("unlabelled_port1"))
# 		unlabelled_port2 = port;
# 		bond_number2 = bond_number;
# 	      else
# 		unlabelled_port1 = port;
# 		bond_number1 = bond_number;
# 	      endif
# 	    endif
# 	  endfor
	  
# 	  ## ... and try to assign [in] and [out]
# 	  if ((unlabelled_port1.sign == +1)
# 	      && (unlabelled_port2.sign == +1))
# 	    E = "More than one unlabelled INport on component %s (%s)";
# 	    mtt_error(sprintf(E, comp_name, comp.type));
# 	  elseif ((unlabelled_port1.sign == -1)
# 		  && (unlabelled_port2.sign == -1))
# 	    E = "More than one unlabelled OUTport on component %s (%s)";
# 	    mtt_error(sprintf(E, comp_name, comp.type));
# 	  else
# 	    if (unlabelled_port1.sign == +1)
# 	      name1 = "[in]";
# 	      name2 = "[out]";
# 	    elseif (unlabelled_port1.sign == -1)
# 	      name1 = "[out]";
# 	      name2 = "[in]";
# 	    endif
# 	    eval(sprintf("comp.ports.%s.name = '%s'",
# 			 bond_number1, name1));
# 	    eval(sprintf("comp.ports.%s.name = '%s'",
# 			 bond_number2, name2));
# 	    S = "Defaulting port name %s\t on component %s (%s)"    
# 	    mtt_info(sprintf(S, name1, comp_name, comp.type), infofile);
# 	    mtt_info(sprintf(S, name2, comp_name, comp.type), infofile);
# 	  endif
# 	endif
		
#       endif 
#       eval(sprintf("comp_S.comp.%s = comp", comp_name));
#     endfor
#   endif

#   disp(" --- Finished assigning port names ---")


# endfunction


MTT: Model Transformation Tools
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