source: vis_dev/vis-2.3/src/hrc/hrcHierarchy.c @ 26

Last change on this file since 26 was 14, checked in by cecile, 13 years ago

vis2.3
File size: 8.0 KB
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1/**CFile***********************************************************************
2
3  FileName    [hrcHierarchy.c]
4
5  PackageName [hrc]
6
7  Synopsis    [Creates a hierarchy from model definitions.]
8
9  Description []
10
11  SeeAlso     []
12
13  Author      [Yuji Kukimoto]
14
15  Copyright   [Copyright (c) 1994-1996 The Regents of the Univ. of California.
16  All rights reserved.
17
18  Permission is hereby granted, without written agreement and without license
19  or royalty fees, to use, copy, modify, and distribute this software and its
20  documentation for any purpose, provided that the above copyright notice and
21  the following two paragraphs appear in all copies of this software.
22
23  IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
24  DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
25  OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
26  CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28  THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
29  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
30  FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN
31  "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO PROVIDE
32  MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.]
33
34******************************************************************************/
35
36#include "hrcInt.h"
37
38static char rcsid[] UNUSED = "$Id: hrcHierarchy.c,v 1.4 2005/04/16 04:23:47 fabio Exp $";
39
40/*---------------------------------------------------------------------------*/
41/* Constant declarations                                                     */
42/*---------------------------------------------------------------------------*/
43
44
45/*---------------------------------------------------------------------------*/
46/* Type declarations                                                         */
47/*---------------------------------------------------------------------------*/
48
49
50/*---------------------------------------------------------------------------*/
51/* Stucture declarations                                                     */
52/*---------------------------------------------------------------------------*/
53
54
55/*---------------------------------------------------------------------------*/
56/* Variable declarations                                                     */
57/*---------------------------------------------------------------------------*/
58
59
60/*---------------------------------------------------------------------------*/
61/* Macro declarations                                                        */
62/*---------------------------------------------------------------------------*/
63
64
65/**AutomaticStart*************************************************************/
66
67/*---------------------------------------------------------------------------*/
68/* Static function prototypes                                                */
69/*---------------------------------------------------------------------------*/
70
71static Hrc_Node_t * _HrcCreateHierarchyAux(Hrc_Manager_t *hmgr, Hrc_Model_t *model, char *instanceName, st_table *pathTable);
72static int _HrcConnectParentChild(Hrc_Node_t *parent, Hrc_Node_t *child, Hrc_Subckt_t *subckt);
73
74/**AutomaticEnd***************************************************************/
75
76
77/*---------------------------------------------------------------------------*/
78/* Definition of exported functions                                          */
79/*---------------------------------------------------------------------------*/
80
81/**Function********************************************************************
82
83  Synopsis    [Creates a hierarchy from model definitinos.]
84
85  Description [Creates a hierarchy from model definitinos. The second
86  argument is a pointer to the root model. The last argument is the name
87  of the root node. A hash table pathTable is used to check to see if
88  there is no cyclic model definition.]
89
90  SideEffects []
91
92  SeeAlso     [_HrcCreateHierarchyAux]
93
94******************************************************************************/
95
96Hrc_Node_t *
97Hrc_ModelCreateHierarchy(
98  Hrc_Manager_t *hmgr,
99  Hrc_Model_t *model,
100  char *instanceName)
101{
102  st_table *pathTable = st_init_table(st_ptrcmp,st_ptrhash);
103  Hrc_Node_t *rootNode = _HrcCreateHierarchyAux(hmgr,model,instanceName,pathTable);
104  st_free_table(pathTable);
105  return rootNode;
106}
107   
108
109/*---------------------------------------------------------------------------*/
110/* Definition of internal functions                                          */
111/*---------------------------------------------------------------------------*/
112
113/*---------------------------------------------------------------------------*/
114/* Definition of static functions                                            */
115/*---------------------------------------------------------------------------*/
116/**Function********************************************************************
117
118  Synopsis    [Recursively creates a hierarchy from model definitinos.]
119
120  Description []
121
122  SideEffects [pathTable is updated to keep track of the models used
123  from the root to the current node.]
124
125  SeeAlso     [Hrc_CreateHierarchy]
126
127******************************************************************************/
128
129static Hrc_Node_t *
130_HrcCreateHierarchyAux(
131  Hrc_Manager_t *hmgr,
132  Hrc_Model_t *model,
133  char *instanceName,
134  st_table *pathTable)
135{
136  Hrc_Node_t *rootNode, *childNode;
137  Hrc_Model_t *modelToBeInstantiated;
138  Hrc_Subckt_t *subckt;
139  st_generator *gen;
140
141  if (st_is_member(pathTable,(char *)model) == 1){
142    error_append("Model ");
143    error_append(Hrc_ModelReadName(model));
144    error_append(" is defined by using itself.\n");
145    return NIL(Hrc_Node_t);
146  }
147  rootNode = Hrc_NodeDup(Hrc_ModelReadMasterNode(model),instanceName);
148  (void)st_insert(pathTable,model,NULL);
149
150  Hrc_ModelForEachSubckt(model,gen,instanceName,subckt){
151    modelToBeInstantiated = Hrc_SubcktReadModel(subckt);
152    childNode = _HrcCreateHierarchyAux(hmgr,modelToBeInstantiated,Hrc_SubcktReadInstanceName(subckt),pathTable);
153    if (childNode == NIL(Hrc_Node_t)){
154      return NIL(Hrc_Node_t);
155    }
156    if (_HrcConnectParentChild(rootNode,childNode,subckt) == 0){
157      return NIL(Hrc_Node_t);
158    }
159  }
160  (void)st_delete(pathTable,&model,NULL);
161  return rootNode;
162}
163
164
165/**Function********************************************************************
166
167  Synopsis    [Connects a parent node and a child node using Hrc_Subckt_t
168  information.]
169
170  Description []
171
172  SideEffects [The parent node and the child node are connected together
173  in the hierarchy.]
174
175  SeeAlso     [Hrc_NodeAddChild]
176
177******************************************************************************/
178static int
179_HrcConnectParentChild(
180  Hrc_Node_t *parent, 
181  Hrc_Node_t *child,
182  Hrc_Subckt_t *subckt)
183{
184  array_t *actualInputVars, *actualOutputVars;
185  array_t *realActualInputVars, *realActualOutputVars;
186  int i;
187  Var_Variable_t *var, *realVar;
188
189  /* actual inputs and outputs in the master hnode corresponsing to the parent */
190  actualInputVars = Hrc_SubcktReadActualInputVars(subckt);
191  actualOutputVars = Hrc_SubcktReadActualOutputVars(subckt);
192
193  /* collect all the actual inputs in the parent */
194  realActualInputVars = array_alloc(Var_Variable_t *,0);
195  for (i=0; i < array_n(actualInputVars); i++){
196    var = array_fetch(Var_Variable_t *,actualInputVars,i);
197    realVar = Hrc_NodeFindVariableByName(parent,Var_VariableReadName(var)); 
198    array_insert_last(Var_Variable_t *,realActualInputVars,realVar);
199  }
200  /* collect all the actual outputs in the parent */
201  realActualOutputVars = array_alloc(Var_Variable_t *,0);
202  for (i=0; i < array_n(actualOutputVars); i++){
203    var = array_fetch(Var_Variable_t *,actualOutputVars,i);
204    realVar = Hrc_NodeFindVariableByName(parent,Var_VariableReadName(var)); 
205    array_insert_last(Var_Variable_t *,realActualOutputVars,realVar);
206  }
207  /* connects the parent and the child using an hrc function */
208  if (Hrc_NodeAddChild(parent,child,realActualInputVars,realActualOutputVars) == 0){
209     return 0;
210  }
211  return 1;
212}
213 
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