dbprint.c 22 KB
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#include "compiledefines.h"
#include "types.t"
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#include "system.h"
#include "syntaxtr.t"
#include "comsupport.h"
#include "settings.h"
#include "sizes.h"
#include "checker.h"
#include "checksupport.h"
#include "overloading.h"
#include "dbprint.h"
#include "codegen_types.h"

#define for_l(v,l,n) for(v=(l);v!=NULL;v=v->n)

#define PrintAnnotation(annot)

#undef PRINT_alt_lifted_node_ids
#undef PRINT_NODE_ID_REF_COUNTS
#define PRINT_ALL_NODE_ID_ADDRESSES
#undef PRINT_NODE_LINE_NUMBERS
#define PRINT_NODE_ID_REF_COUNT		

static void PrintUnaryState (StateKind kind, ObjectKind obj, File file)
{	
	switch (kind)
	{	case OnB: FPutS ("OnB ", file); break;
		case OnA: FPutS ("OnA ", file); break;
		case StrictOnA: FPutS ("StrictOnA ", file); break;
		case SemiStrict: FPutS ("SemiStrict ", file); break;
		case StrictRedirection: FPutS ("StrictRedirection ", file); break;
		case Parallel: FPutS ("Parallel ", file); break;
		case Undefined: FPutS ("Undefined ", file); break;
		case UnderEval: FPutS ("UnderEval ", file); break;
	}
	switch (obj)
	{	case UnknownObj: FPutS ("???", file); break;
		case IntObj: FPutS ("Int ", file); break;
		case BoolObj: FPutS ("Bool ", file); break;
		case CharObj: FPutS ("Char ", file); break;
		case StringObj: FPutS ("String ", file); break;
		case RealObj: FPutS ("Real ", file); break;
		case FileObj: FPutS ("File ", file); break;
		case TupleObj: FPutS ("Tuple ", file); break;
		case ListObj: FPutS ("List ", file); break;
		case ProcIdObj: FPutS ("ProcId ", file); break;
	}
}

static void PrintState (StateS state, File file)
{
	return;

	if (state.state_arity == 1)
		PrintUnaryState (state.state_kind,state.state_object, file);
}

void DPrintOccurrenceKind (OccurrenceKind kind, File file)
{
	switch (kind)
	{	case NotUsed:			/* FPutS ("NotUsed", file); */ return;
		case UniquelyUsed:		FPutS ("<U> ", file); return;
		case SelectivelyUsed:	FPutS ("<S> ", file); return;
		case MultiplyUsed:		FPutS ("<M> ", file); return;
		default:				FPutS ("<?> ", file); return;
	}

}

void DPrintNodeId (NodeId nid, File file)
{
	if (nid){
		if (nid->nid_ident){
			FPrintF (file, "%s",nid->nid_ident->ident_name);
#ifdef PRINT_ALL_NODE_ID_ADDRESSES
			FPrintF (file, "@i_%lx", (long) nid);
#endif
		} else
			FPrintF (file, "i_%lx", (long) nid);

#ifdef PRINT_NODE_ID_REF_COUNT		
		FPrintF (file, "<%d>", nid->nid_refcount);
#endif
	} else
		FPrintF (file," 00000000");
}

void DPrintNodeIdS (char *s,NodeId node_id,File file)
{
	FPrintF (file,"%s",s);
	DPrintNodeId (node_id,file);
	FPrintF (file,"\n");	
}

static void DPrintTypeVar (TypeVar tv, Node follow, File file)
{
	if (tv){
		if (tv->tv_ident)
			FPrintF (file, "%s",tv->tv_ident->ident_name);
		else
			FPrintF (file, "i_%lx", (long) tv);
		FPrintF (file, "<%d>", tv->tv_refcount);
		if (follow)
			FPutS (" = ", file);
	}
}

static void PrintArgument (Args arg,Bool brackets,int n_leading_spaces,File file)
{
	PrintState (arg->arg_state, file);

	if (arg->arg_node->node_kind==NodeIdNode)
		DPrintNodeId (arg->arg_node->node_node_id,file);
	else {
		/*	DPrintOccurrenceKind (arg -> arg_occurrence); */
		PrintRuleNode (arg->arg_node,brackets,n_leading_spaces,file);
	}
}

static void print_spaces (int n_leading_spaces,File file)
{
	int n;
	
	for (n=0; n<n_leading_spaces; ++n)
		FPutC (' ',file);
}

static void PrintArguments (Args args, char separator, Bool brackets,int n_leading_spaces,File file)
{
	if (args!=NULL){
		PrintArgument (args,brackets,n_leading_spaces,file);
		for (args = args -> arg_next; args; args = args -> arg_next){
			FPutC (separator, file);
			if (separator=='\n')
				print_spaces (n_leading_spaces,file);
			PrintArgument (args, brackets,n_leading_spaces,file);
		}
	}
}

void PrintRuleNode (Node node,Bool brackets,int n_leading_spaces,File file)
{
/*
	if (IsOnACycle (node -> node_number))
		FPutS ("<C>", file);
	PrintState (node -> node_state,file);
*/
	switch (node -> node_kind){
	case NormalNode:
	case PrefixNode:
	{
		Symbol node_symb = node->node_symbol;
	
		if (node_symb -> symb_kind == tuple_symb){
			FPutC ('(', file);
			PrintArguments (node -> node_arguments, ',', False,n_leading_spaces,file);
			FPutC (')', file);
		}
		else if (node_symb -> symb_kind == list_type)
		{	FPutC ('[', file);
			PrintArguments (node -> node_arguments, ',', False,n_leading_spaces,file);
			FPutC (']', file);
		}
		else if (node_symb -> symb_kind == nil_symb)
			FPutS ("[]", file);
		else if (node_symb -> symb_kind == cons_symb)
		{	FPutC ('[', file);
			PrintArgument (node -> node_arguments, brackets,n_leading_spaces,file);
			FPutC (':', file);
			PrintArgument (node -> node_arguments -> arg_next, brackets,n_leading_spaces,file);
			FPutC (']', file);
		} else if (node_symb -> symb_kind==select_symb){
			FPutS ("_sel",file);
			FPutC ('0'+node->node_arity,file);
			FPutC (' ',file);
			PrintArgument (node -> node_arguments,True,n_leading_spaces,file);
		} else {
			if (brackets && node -> node_arguments)
				FPutC ('(', file);
			
			PrintSymbol (node_symb, file);

#ifdef PRINT_NODE_LINE_NUMBERS
			FPrintF (file,"#%d",node->node_line);
#endif
			if (node_symb->symb_kind==definition && node_symb->symb_def->sdef_kind==IMPRULE &&
				(node_symb->symb_def->sdef_rule->rule_mark & RULE_INTERNAL_FUNCTION_MASK))
			{
				FPrintF (file,"_%d",node_symb->symb_def->sdef_number);
			}

			if (node -> node_arguments)
			{	FPutC (' ', file);
				PrintArguments (node -> node_arguments,' ', True,n_leading_spaces,file);
				if (brackets)
					FPutC (')', file);
			}
		}
		break;
	}
	case SelectorNode:
		PrintArgument (node -> node_arguments, True,n_leading_spaces,file);
		if (node->node_arity>1){
			FPutC ('!',file);
			FPutC ('0'+node->node_arity,file);
		} else
			FPutC ('.',file);
		PrintSymbol (node->node_symbol, file);
		break;
	case IfNode:
	{
		Args elsepart, thenpart, condpart;
		
		condpart = node -> node_arguments;
		thenpart = condpart -> arg_next;
		elsepart = thenpart -> arg_next;
	
		if (brackets)
			FPutC ('(', file);
	
		FPutS ("IF ", file);
		PrintArgument (condpart, True,n_leading_spaces,file);

		FPutC ('\n',file);
		print_spaces (n_leading_spaces+4,file);
#if 1
# ifdef PRINT_NODE_ID_REF_COUNTS
		FPutS ("[ ", file);
		{
			NodeIdRefCountListP node_id_ref_count_elem;
			
			for_l (node_id_ref_count_elem,node->node_then_node_id_ref_counts,nrcl_next){
				DPrintNodeId (node_id_ref_count_elem->nrcl_node_id,file);
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				fprintf (file," %d ",node_id_ref_count_elem->nrcl_ref_count);
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			}		
		}
		FPutS ("]\n", file);
		print_spaces (n_leading_spaces+4,file);
# else
		if (node->node_then_strict_node_ids!=NULL){
			StrictNodeIdP strict_node_id;
			
			FPutS ("let! ", file);
			
			for_l (strict_node_id,node->node_then_strict_node_ids,snid_next){
				DPrintNodeId (strict_node_id->snid_node_id,file);
				FPutS ("; ",file);
			}
			FPutC ('\n',file);
			print_spaces (n_leading_spaces+4,file);
		}
# endif
#endif
		PrintArgument (thenpart, True,n_leading_spaces+4,file);

		if (node->node_then_node_defs!=NULL){
			FPutC ('\n',file);
			print_spaces (n_leading_spaces+4,file);
			FPutS ("{\n",file);
			PrintNodeDefs (node->node_then_node_defs,n_leading_spaces+8,file);
			print_spaces (n_leading_spaces+4,file);
			FPutC ('}', file);
		}
		
		FPutC ('\n',file);
		print_spaces (n_leading_spaces+4,file);

#if 1
# ifdef PRINT_NODE_ID_REF_COUNTS
		FPutS ("[ ", file);
		{
			NodeIdRefCountListP node_id_ref_count_elem;
			
			for_l (node_id_ref_count_elem,node->node_else_node_id_ref_counts,nrcl_next){
				DPrintNodeId (node_id_ref_count_elem->nrcl_node_id,file);
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				fprintf (file," %d ",node_id_ref_count_elem->nrcl_ref_count);
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			}		
		}
		FPutS ("]\n",file);
		print_spaces (n_leading_spaces+4,file);
# else
		if (node->node_else_strict_node_ids!=NULL){
			StrictNodeIdP strict_node_id;
			
			FPutS ("let! ", file);
			
			for (strict_node_id=node->node_else_strict_node_ids; strict_node_id!=NULL; strict_node_id=strict_node_id->snid_next){
				DPrintNodeId (strict_node_id->snid_node_id,file);
				FPutS ("; ",file);
			}
			FPutC ('\n',file);
			print_spaces (n_leading_spaces+4,file);
		}
# endif
#endif

		PrintArgument (elsepart, True,n_leading_spaces+4,file);
		
		if (node->node_else_node_defs!=NULL){
			FPutC ('\n', file);
			print_spaces (n_leading_spaces+4,file);
			FPutS ("{\n",file);
			PrintNodeDefs (node->node_else_node_defs,n_leading_spaces+8,file);
			print_spaces (n_leading_spaces+4,file);
			FPutS ("}\n", file);
			print_spaces (n_leading_spaces,file);
		}
		
		if (brackets)
			FPutC (')', file);
		break;
	}
	case NodeIdNode:
	{
		NodeId node_id;
		
		node_id=node->node_node_id;
		
		if (node_id->nid_ident){
			FPrintF (file, " %s<%d>",node_id->nid_ident->ident_name,node_id->nid_refcount);
#ifdef PRINT_ALL_NODE_ID_ADDRESSES
			FPrintF (file, " i_%lx",(long) node_id);
#endif
		} else
			FPrintF (file, " i_%lx<%d>",(long) node_id,node_id->nid_refcount);
		break;
	}
	case RecordNode:
		if (brackets && node -> node_arguments)
			FPutC ('(', file);
		PrintSymbol (node->node_symbol, file);
		if (node -> node_arguments){
			FPutC (' ', file);
			PrintArguments (node -> node_arguments,' ', True,n_leading_spaces,file);
			if (brackets)
				FPutC (')', file);
		}
		break;
	case IdentNode:
		if (brackets && node -> node_arguments)
			FPutC ('(', file);

		FPutC ('\"',file);
		FPutS (node->node_ident->ident_name, file);
		FPutC ('\"',file);

		if (node -> node_arguments){
			FPutC (' ', file);
			PrintArguments (node -> node_arguments,' ', True,n_leading_spaces,file);
			if (brackets)
				FPutC (')', file);
		}
		break;
	case UpdateNode:
	{	Args field = node -> node_arguments;

		FPutC ('{', file);

		PrintArgument (field, False,n_leading_spaces,file);
		FPutS (" & ", file);
		field = field -> arg_next;
		PrintArgument (field, False,n_leading_spaces,file);
		for (field = field -> arg_next; field; field = field -> arg_next)
		{	FPutC (',', file);
			PrintArgument (field, False,n_leading_spaces,file);
		}

		FPutC ('}', file);
		break;
	}
	case MatchNode:
	{
		FPutS ("Match ",file);
		PrintSymbol (node->node_symbol,file);
		FPutC (' ',file);
		PrintArgument (node->node_arguments,False,n_leading_spaces,file);
		break;
	}
	case ApplyNode:
	{
		FPutS ("Apply ",file);
		PrintRuleNode (node->node_node, False,n_leading_spaces,file);
		FPutC (' ',file);
		PrintArgument (node->node_arguments,False,n_leading_spaces,file);
		break;
	}
	case SwitchNode:
		FPutS ("Switch ",file);
		DPrintNodeId (node->node_node_id,file);
		FPutC ('\n',file);
		print_spaces (n_leading_spaces,file);
		PrintArguments (node->node_arguments,'\n',True,n_leading_spaces,file);
		break;		
	case CaseNode:
		FPutS ("Case: [ ",file);
		{
			NodeIdRefCountListP node_id_ref_count_elem;
			
			for_l (node_id_ref_count_elem,node->node_node_id_ref_counts,nrcl_next){
				DPrintNodeId (node_id_ref_count_elem->nrcl_node_id,file);
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				fprintf (file," %d ",node_id_ref_count_elem->nrcl_ref_count);
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			}
		}
		FPutS ("]\n",file);
		print_spaces (n_leading_spaces+4,file);

#if 0
# ifndef PRINT_NODE_ID_REF_COUNTS
		if (node->node_strict_node_ids!=NULL){
			StrictNodeIdP strict_node_id;
			
			FPutS ("let! ", file);
			
			for_l (strict_node_id,node->node_strict_node_ids,snid_next){
				if (strict_node_id->snid_mark & STRICT_NODE_ID_IDENT_MASK){
					FPrintF (file, " %s",strict_node_id->snid_ident->ident_name);
				} else {
					DPrintNodeId (strict_node_id->snid_node_id,file);
					FPutS ("; ",file);
				}
			}
			FPutC ('\n',file);
			print_spaces (n_leading_spaces+4,file);
		}
# endif
#endif
		PrintArgument (node->node_arguments,False,n_leading_spaces+4,file);
		
		if (node->node_node_defs!=NULL){
			FPutC ('\n', file);
			print_spaces (n_leading_spaces,file);
			FPutS ("{\n",file);
			PrintNodeDefs (node->node_node_defs,n_leading_spaces+4,file);
			print_spaces (n_leading_spaces,file);
			FPutS ("}\n", file);
			print_spaces (n_leading_spaces,file);
		}

		break;		
	case DefaultNode:
		FPutS ("Default: [ ",file);
		{
			NodeIdRefCountListP node_id_ref_count_elem;
			
			for_l (node_id_ref_count_elem,node->node_node_id_ref_counts,nrcl_next){
				DPrintNodeId (node_id_ref_count_elem->nrcl_node_id,file);
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				fprintf (file," %d ",node_id_ref_count_elem->nrcl_ref_count);
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			}		
		}
		FPutS ("]\n",file);
		print_spaces (n_leading_spaces+4,file);

#if 0
# ifndef PRINT_NODE_ID_REF_COUNTS
		if (node->node_strict_node_ids!=NULL){
			StrictNodeIdP strict_node_id;
			
			FPutS ("let! ", file);
			
			for_l (strict_node_id,node->node_strict_node_ids,snid_next){
				if (strict_node_id->snid_mark & STRICT_NODE_ID_IDENT_MASK){
					FPrintF (file, " %s",strict_node_id->snid_ident->ident_name);
				} else {
					DPrintNodeId (strict_node_id->snid_node_id,file);
					FPutS ("; ",file);
				}
			}
			FPutC ('\n',file);
			print_spaces (n_leading_spaces+4,file);
		}
# endif
#endif
		PrintArgument (node->node_arguments,False,n_leading_spaces+4,file);

		if (node->node_node_defs!=NULL){
			FPutC ('\n', file);
			print_spaces (n_leading_spaces,file);
			FPutS ("{\n",file);
			PrintNodeDefs (node->node_node_defs,n_leading_spaces+4,file);
			print_spaces (n_leading_spaces,file);
			FPutS ("}\n", file);
			print_spaces (n_leading_spaces,file);
		}
		break;		
	case PushNode:
	{
		NodeIdListElementP node_id_list;

		FPutS ("Push ",file);
		DPrintNodeId (node->node_arguments->arg_node->node_node_id,file);
		FPutS ("[",file);
		for_l (node_id_list,node->node_node_ids,nidl_next){
			DPrintNodeId (node_id_list->nidl_node_id,file);
			if (node_id_list->nidl_next!=NULL)
				FPutC (' ',file);				
		}
		FPutS ("]",file);
		FPutC ('\n',file);
		print_spaces (n_leading_spaces,file);
		PrintArgument (node->node_arguments->arg_next,True,n_leading_spaces,file);
		break;		
	}
	case GuardNode:
		FPutS ("Guard ",file);
		PrintArguments (node->node_arguments,'\n',True,n_leading_spaces,file);
		break;	
	case TupleSelectorsNode:
		FPutS ("TupleSelectors (",file);
		PrintArguments (node->node_arguments,',',True,n_leading_spaces,file);
		FPutS (") = ",file);
		PrintRuleNode (node->node_node,True,n_leading_spaces,file);
		break;
	case ScopeNode:
		FPutS ("ScopeNode ",file);
		PrintRuleNode (node->node_node,True,n_leading_spaces,file);
		if (node->node_arguments!=NULL){
			FPutS (" ScopeNodeArguments ",file);
			PrintArguments (node->node_arguments,' ',True,n_leading_spaces,file);
		}
		break;
	case FillUniqueNode:
		FPutS ("FillUniqueNode ",file);
		DPrintNodeId (node->node_node->node_arguments->arg_node->node_node_id,file);
		FPutC (' ',file);
		PrintArguments (node->node_arguments,' ',True,n_leading_spaces,file);
		break;
	default:
		FPutC ('?',file);
		FPrintF (file,"%d",(int)node->node_kind);
	}
}

void PrintNodeDef (NodeDefP def_p,int n_leading_spaces,File file)
{
	int n;
	
	/* FPrintF (file, "%d: ", (int) def_p->def_number); */
	
	for (n=n_leading_spaces; n>0; --n)
		FPutC (' ',file);
	
/*		if (def_p->def_has_lhs_pattern)
		PrintRuleNode (def_p->def_pattern,False,n_leading_spaces,file);
	else
*/
		DPrintNodeId (def_p -> def_id, file);
	
	if (def_p -> def_node){
		FPutS (" = ", file);
		PrintRuleNode  (def_p->def_node, False,n_leading_spaces,file);
	}
	
	FPutS ("\n",file);
}

void PrintNodeDefs (NodeDefs defs,int n_leading_spaces,File file)
{
	for ( ; defs!=NULL; defs=defs->def_next)
		PrintNodeDef (defs,n_leading_spaces,file);
}

STRUCT (lifted_node_id,LiftedNodeId){
	NodeId					lnid_lifted_node_id;
	NodeId					lnid_lhs_node_id;
	struct lifted_node_id *	lnid_next;
};

void PrintRuleAlt (RuleAlts rulealt,int n_leading_spaces,File file)
{
	PrintRuleNode (rulealt->alt_lhs_root, False,n_leading_spaces,file);

#ifdef PRINT_alt_lifted_node_ids
	if (rulealt->alt_lifted_node_ids){
		LiftedNodeId lifted_node_id_p;
		
		FPutS (" <<",file);
		for_l (lifted_node_id_p,rulealt->alt_lifted_node_ids,lnid_next){
			FPutC (' ',file);
			DPrintNodeId (lifted_node_id_p->lnid_lhs_node_id,file);
			FPutC (':',file);
			DPrintNodeId (lifted_node_id_p->lnid_lifted_node_id,file);
		}
		FPutS (" >>",file);
	}
#endif

	if (rulealt->alt_lhs_defs){
		FPutS ("\n", file);
		PrintNodeDefs (rulealt -> alt_lhs_defs,4,file);
		FPutS (" = ", file);
	} else
		FPutS ("\n = ", file);

	if (rulealt -> alt_kind==Contractum){
#if 1
# ifndef PRINT_NODE_ID_REF_COUNTS
		if (rulealt->alt_strict_node_ids!=NULL){
			StrictNodeIdP strict_node_id;
			
			FPutS ("let! ", file);
			
			for_l (strict_node_id,rulealt->alt_strict_node_ids,snid_next){
				if (strict_node_id->snid_mark & STRICT_NODE_ID_IDENT_MASK){
					FPrintF (file, " %s",strict_node_id->snid_ident->ident_name);
				} else {
					DPrintNodeId (strict_node_id->snid_node_id,file);
					FPutS ("; ",file);
				}
			}
			FPutC ('\n',file);
			print_spaces (n_leading_spaces,file);
		}
# endif
#endif


		PrintRuleNode  (rulealt->alt_rhs_root, False,n_leading_spaces,file);
		FPutS ("\n", file);
		PrintNodeDefs (rulealt->alt_rhs_defs,4,file);
	} else {
/*
		FPutS (rulealt->alt_rhs_root->node_node_id->nid_ident->ident_name,file);
*/
	}
}

static void PrintRuleAlts (RuleAlts rulealt,int n_leading_spaces,File file)
{
	for (; rulealt; rulealt = rulealt -> alt_next)
		PrintRuleAlt (rulealt,n_leading_spaces,file);
}

static void PrintTypeArguments (TypeArgs args, char separator, File file)
{
	if (args){
		PrintTypeNode (args->type_arg_node, file);

		for (args = args->type_arg_next; args; args = args->type_arg_next){
			FPutC (separator, file);
			PrintTypeNode (args->type_arg_node, file);
		}
	}
}

static char *PrintUniVars = "uvwxyz";
#define NrOfPrintUniVars 6

void PrintTypeNode (TypeNode node, File file)
{
	if (node->type_node_annotation || node->type_node_annotation == StrictOnA)
		FPutC ('!', file);

	if (node->type_node_attribute == UniqueAttr)
		FPutC ('*', file);
	else if (node->type_node_attribute > UniqueAttr)
	{	unsigned node_attr = node->type_node_attribute - UniqueAttr;
	
		if (node_attr < NrOfPrintUniVars)
		{	FPutC (PrintUniVars[node_attr], file);
			FPutC (':', file);
		}
		else
			FPrintF (file, "%u:", node_attr);
	}

	if (node->type_node_is_var)
		FPutS (node->type_node_tv->tv_ident->ident_name, file);
	else if (node->type_node_symbol->symb_kind == tuple_type)
	{	FPutC ('(', file);
		PrintTypeArguments (node->type_node_arguments, ',', file);
		FPutC (')', file);
	}
	else if (node->type_node_symbol->symb_kind == list_type)
	{	FPutC ('[', file);
		PrintTypeArguments (node->type_node_arguments,',', file);
		FPutC (']', file);
	}
	else if (node->type_node_symbol->symb_kind >= array_type &&
			 node->type_node_symbol->symb_kind <= unboxed_array_type)
	{	char *delim_chars = ":|#";
		char array_delim = delim_chars [node->type_node_symbol->symb_kind - array_type];
		FPutC ('{', file);
		FPutC (array_delim, file);
		PrintTypeArguments (node->type_node_arguments,',', file);
		FPutC (array_delim, file);
		FPutC ('}', file);
	}
	else if (node->type_node_symbol->symb_kind == apply_symb)
	{	FPutC ('(', file);
		PrintTypeArguments (node -> type_node_arguments, ' ', file);
		FPutC (')', file);
	} else
	{	if (node->type_node_arguments)
			FPutC ('(', file);

		PrintSymbol (node->type_node_symbol, file);
		
		if (node->type_node_arguments){
			FPutC (' ', file);
				
			PrintTypeArguments (node->type_node_arguments,' ', file);

			FPutC (')', file);
		}
	}
}

static void PrintAttribute (AttributeKind attr, File file)
{
	if (attr == NotUniqueAttr)
		return;
	else if (attr == UniqueAttr)
		FPutC ('*', file);
	else
		FPrintF (file, "%d", attr - UniqueAttr, file);

}

static void	PrintTypeAttrEquations (UniVarEquations equs, File file)
{
	for (; equs; equs = equs -> uve_next)
	{	AttributeKindList next;
		PrintAttribute (equs -> uve_demanded, file);
		FPutC (':', file);
		for (next = equs -> uve_offered; next; next = next -> akl_next)
		{	FPutC (' ', file);
			PrintAttribute (next -> akl_elem, file);
		}
	}
}
			
static void PrintTypeContext (TypeContext type_context, File file)
{
	SymbolList symbols;
	
	for (symbols = type_context -> tyco_symbols; symbols; symbols = symbols -> sl_next)
	{	PrintSymbol (symbols -> sl_symbol -> sdef_class -> cd_symbol, file);
		FPutC (' ', file);
		DPrintTypeVar (type_context -> tyco_variable, NULL, file);
	}
}

static void PrintTypeContexts (TypeContext type_contexts, File file)
{
	PrintTypeContext (type_contexts, file);
	
	for (type_contexts = type_contexts -> tyco_next; type_contexts; type_contexts = type_contexts -> tyco_next)
	{	FPutS (" & ", file);
		PrintTypeContext (type_contexts, file);
	}
}

void PrintTypeAlt (TypeAlts type_alts, File file, Bool with_equats)
{
	TypeNode lhs_root = type_alts -> type_alt_lhs;
	
	PrintSymbol (lhs_root -> type_node_symbol, file);
	FPutS (" :: ", file);
	PrintTypeArguments (lhs_root -> type_node_arguments, ' ', file);

	FPutS (" -> ", file);
	PrintTypeNode (type_alts -> type_alt_rhs, file);
	if (type_alts -> type_alt_type_context)
	{	FPutS (" | ", file);
		PrintTypeContexts (type_alts -> type_alt_type_context, file);
	}
	FPutC ('\n', file);
	if (with_equats)
	{	PrintTypeAttrEquations (type_alts -> type_alt_attr_equations, file);
		FPutC ('\n', file);
	}	
}

void PrintImpRule (ImpRules rule,int n_leading_spaces,File file)
{
	/*
	if (rule -> rule_type)
		PrintTypeAlt (rule -> rule_type, file);
	*/
	
	PrintRuleAlts (rule->rule_alts,n_leading_spaces,file);
}

void PrintRules (ImpRules rules)
{
	ImpRuleS *rule;

	for_l (rule,rules,rule_next){
		PrintImpRule (rule,4,StdOut);
		
		if (rule->rule_next!=NULL)
			FPutC ('\n',StdOut);
	}
}

#ifdef _COMPSTATS_

unsigned long 
	NrNodeCells, 
	NrArgCells, 
	NrTypeNodeCells,
	NrTypeArgCells,
	NrExpandedTypeNodeCells,
	NrExpandedTypeArgCells,
	NrNodeIdCells, 
	NrSymbolCells,
	NrBasicNodes;

void InitDB (void)
{
	NrArgCells = NrNodeCells = NrNodeIdCells =0;
	NrTypeArgCells = NrTypeNodeCells =0;
	NrExpandedTypeNodeCells = NrExpandedTypeArgCells = 0;
	NrBasicNodes = NrSymbolCells = 0;
}

extern unsigned long NrOfBytes;
void PrintCompStats (void, File file)
{
	FPutC('\n', file);
	FPrintF (file, "Number of nodes: %lu\n", NrNodeCells);
	FPrintF (file, "Number of arguments: %lu\n", NrArgCells);
	FPrintF (file, "Number of type nodes: %lu\n", NrTypeNodeCells);
	FPrintF (file, "Number of type arguments: %lu\n", NrTypeArgCells);
	FPrintF (file, "Number of expanded type nodes: %lu\n", NrExpandedTypeNodeCells);
	FPrintF (file, "Number of expanded type arguments: %lu\n", NrExpandedTypeArgCells);
	FPrintF (file, "Number of nodeids: %lu\n", NrNodeIdCells);
	FPrintF (file, "Number of symbols: %lu\n", NrSymbolCells);
	FPrintF (file, "Number of basic nodes: %lu\n", NrBasicNodes);
	FPrintF (file, "Total number of bytes: %lu\n", NrOfBytes);
}

#endif