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/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: ImmutableCell.java
* Written by: Dmitry Nadezhin, Sun Microsystems.
*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
*
* Electric(tm) is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.database;
import com.sun.electric.database.hierarchy.View;
import com.sun.electric.database.id.CellId;
import com.sun.electric.database.id.IdReader;
import com.sun.electric.database.id.IdWriter;
import com.sun.electric.database.id.LibId;
import com.sun.electric.database.id.TechId;
import com.sun.electric.database.text.CellName;
import com.sun.electric.database.variable.Variable;
import com.sun.electric.util.collections.ArrayIterator;
import java.io.IOException;
import java.util.Arrays;
import java.util.Iterator;
/**
* Immutable class ImmutableCell represents a cell.
*/
public class ImmutableCell extends ImmutableElectricObject {
/** CellId of this ImmutableCell. */
public final CellId cellId;
/** The group name of this ImmutableCell. */
public final CellName groupName;
/** The date this ImmutableCell was created. */
public final long creationDate;
/** The date this ImmutableCell was modified. */
public final long revisionDate;
/** This ImmutableCell's TechId. */
public final TechId techId;
/** Parameters of this ImmutableCell. */
final Variable[] params;
/**
* The private constructor of ImmutableCell. Use the factory "newInstance" instead.
* @param cellId id of this ImmutableCell.
* @param groupName group name of this ImmutableCell.
* @param creationDate the date this ImmutableCell was created.
* @param revisionDate the date this ImmutableCell was last modified.
* @param techId the technology of this ImmutableCell.
* @param flags flags of this ImmutableCell.
* @param vars array of Variables of this ImmutableCell
*/
private ImmutableCell(CellId cellId, CellName groupName,
long creationDate, long revisionDate, TechId techId, int flags, Variable[] vars, Variable[] params) {
super(vars, flags);
this.cellId = cellId;
this.groupName = groupName;
this.creationDate = creationDate;
this.revisionDate = revisionDate;
this.techId = techId;
this.params = params;
}
/**
* Returns new ImmutableCell object.
* @param cellId id of this ImmutableCell.
* @param creationDate creation date of this ImmutableCell.
* @return new ImmutableCell object.
* @throws NullPointerException if cellId or libId is null.
*/
public static ImmutableCell newInstance(CellId cellId, long creationDate) {
if (cellId == null) {
throw new NullPointerException("cellId");
}
CellName cellName = CellName.newName(cellId.cellName.getName(), View.SCHEMATIC, 0);
return new ImmutableCell(cellId, cellName, creationDate, creationDate, null, 0, Variable.NULL_ARRAY, Variable.NULL_ARRAY);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by group name.
* @param groupName new group name.
* @return ImmutableCell which differs from this ImmutableCell by cell name.
* @throws IllegalArgumentException if groupName is not schematic view and zero version.
*/
public ImmutableCell withGroupName(CellName groupName) {
if (this.groupName.equals(groupName)) {
return this;
}
if (groupName.getVersion() != 0 || groupName.getView() != View.SCHEMATIC) {
throw new IllegalArgumentException(groupName.toString());
}
return new ImmutableCell(this.cellId, groupName,
this.creationDate, this.revisionDate, this.techId, this.flags, getVars(), this.params);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by creation date.
* @param creationDate new creation date.
* @return ImmutableCell which differs from this ImmutableCell by creation date.
*/
public ImmutableCell withCreationDate(long creationDate) {
if (this.creationDate == creationDate) {
return this;
}
return new ImmutableCell(this.cellId, this.groupName,
creationDate, this.revisionDate, this.techId, this.flags, getVars(), this.params);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by revision date.
* @param revisionDate new revision date.
* @return ImmutableCell which differs from this ImmutableCell by revision date.
*/
public ImmutableCell withRevisionDate(long revisionDate) {
if (this.revisionDate == revisionDate) {
return this;
}
return new ImmutableCell(this.cellId, this.groupName,
this.creationDate, revisionDate, this.techId, this.flags, getVars(), this.params);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by technology.
* @param techId new technology Id.
* @return ImmutableCell which differs from this ImmutableCell by technology.
*/
public ImmutableCell withTechId(TechId techId) {
if (this.techId == techId) {
return this;
}
if (techId != null && techId.idManager != cellId.idManager) {
throw new IllegalArgumentException("techId");
}
return new ImmutableCell(this.cellId, this.groupName,
this.creationDate, this.revisionDate, techId, this.flags, getVars(), this.params);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by flags.
* @param flags new flags.
* @return ImmutableCell which differs from this ImmutableCell by flags.
*/
public ImmutableCell withFlags(int flags) {
if (this.flags == flags) {
return this;
}
return new ImmutableCell(this.cellId, this.groupName,
this.creationDate, this.revisionDate, this.techId, flags, getVars(), this.params);
}
/**
* Method to return the Parameter on this ImmuatbleCell with a given key.
* @param key the key of the Variable.
* @return the Parameter with that key, or null if there is no such Variable.
* @throws NullPointerException if key is null
*/
public Variable getParameter(Variable.AttrKey key) {
int paramIndex = searchVar(params, key);
return paramIndex >= 0 ? params[paramIndex] : null;
}
/**
* Method to return an Iterator over all Parameters on this ImmutableCell.
* @return an Iterator over all Parameters on this ImmutableCell.
*/
public Iterator getParameters() {
return ArrayIterator.iterator(params);
}
/**
* Method to return the number of Parameters on this ImmutableCell.
* @return the number of Parametes on this ImmutableCell.
*/
public int getNumParameters() {
return params.length;
}
/**
* Method to return the Parameter by its paramIndex.
* @param paramIndex index of Parameter.
* @return the Parameter with given paramIndex.
* @throws ArrayIndexOutOfBoundesException if paramIndex out of bounds.
*/
public Variable getParameter(int paramIndex) {
return params[paramIndex];
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by additional parameter.
* If this ImmutableCell has parameter with the same key as new, the old variable will not be in new
* ImmutableCell.
* @param var additional Variable.
* @return ImmutableCell with additional Variable.
* @throws NullPointerException if var is null
*/
public ImmutableCell withParam(Variable var) {
if (!var.getTextDescriptor().isParam() || !var.isInherit()) {
throw new IllegalArgumentException("Variable " + var + " is not param");
}
if (!paramsAllowed()) {
throw new IllegalArgumentException("Parameters are not allowed for " + this);
}
if (searchVar(var.getKey()) >= 0) {
throw new IllegalArgumentException(this + " has variable with the same name as parameter " + var);
}
Variable[] params = arrayWithVariable(this.params, var);
if (this.params == params) {
return this;
}
return new ImmutableCell(this.cellId, this.groupName,
this.creationDate, this.revisionDate, this.techId, this.flags, getVars(), params);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by removing parameter
* with the specified key. Returns this ImmutableCell if it doesn't contain parameter with the specified key.
* @param key Variable Key to remove.
* @return ImmutableCell without Variable with the specified key.
* @throws NullPointerException if key is null
*/
public ImmutableCell withoutParam(Variable.AttrKey key) {
Variable[] params = arrayWithoutVariable(this.params, key);
if (this.params == params) {
return this;
}
return new ImmutableCell(this.cellId, this.groupName,
this.creationDate, this.revisionDate, this.techId, this.flags, getVars(), params);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by additional Variable.
* If this ImmutableCell has Variable with the same key as new, the old variable will not be in new
* ImmutableCell.
* @param var additional Variable.
* @return ImmutableCell with additional Variable.
* @throws NullPointerException if var is null
*/
public ImmutableCell withVariable(Variable var) {
if (var.getTextDescriptor().isParam()) {
throw new IllegalArgumentException("Variable " + var + " is param");
}
if (var.isAttribute() && searchVar(params, var.getKey()) >= 0) {
throw new IllegalArgumentException(this + " has parameter with the same name as variable " + var);
}
if (!paramsAllowed()) {
var = var.withParam(false);
}
Variable[] vars = arrayWithVariable(var);
if (this.getVars() == vars) {
return this;
}
return new ImmutableCell(this.cellId, this.groupName,
this.creationDate, this.revisionDate, this.techId, this.flags, vars, this.params);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by removing Variable
* with the specified key. Returns this ImmutableCell if it doesn't contain variable with the specified key.
* @param key Variable Key to remove.
* @return ImmutableCell without Variable with the specified key.
* @throws NullPointerException if key is null
*/
public ImmutableCell withoutVariable(Variable.Key key) {
Variable[] vars = arrayWithoutVariable(key);
if (this.getVars() == vars) {
return this;
}
return new ImmutableCell(this.cellId, this.groupName,
this.creationDate, this.revisionDate, this.techId, this.flags, vars, params);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by renamed Ids.
* @param idMapper a map from old Ids to new Ids.
* @return ImmutableCell with renamed Ids.
*/
ImmutableCell withRenamedIds(IdMapper idMapper) {
Variable[] vars = arrayWithRenamedIds(idMapper);
Variable[] params = arrayWithRenamedIds(this.params, idMapper);
CellId cellId = idMapper.get(this.cellId);
if (getVars() == vars && this.params == params && this.cellId == cellId) {
return this;
}
return new ImmutableCell(cellId, this.groupName,
this.creationDate, this.revisionDate, this.techId, this.flags, vars, params);
}
/**
* Returns ImmutableCell which differs from this ImmutableCell by removing all Variables.
* Returns this ImmutableCell if it hasn't variables.
* @return ImmutableCell without Variables.
*/
public ImmutableCell withoutVariables() {
if (this.getNumVariables() == 0 && params.length == 0) {
return this;
}
return new ImmutableCell(this.cellId, this.groupName,
this.creationDate, this.revisionDate, this.techId, this.flags, Variable.NULL_ARRAY, Variable.NULL_ARRAY);
}
void checkSimilarParams(ImmutableCell that) {
if (this.params.length != that.params.length) {
throw new IllegalArgumentException("Different params in " + this + " and " + that);
}
for (int i = 0; i < this.params.length; i++) {
Variable thisParam = this.params[i];
Variable thatParam = that.params[i];
if (thisParam.getKey() != thatParam.getKey()) {
throw new IllegalArgumentException("Different params in " + this + " and " + that);
}
if (thisParam.getUnit() != thatParam.getUnit()) {
throw new IllegalArgumentException("Different units of param " + thisParam.getKey() + " in " + this + " and " + that);
}
if (thisParam.withObject(thatParam.getObject()) != thisParam) {
throw new IllegalArgumentException("Different values of param " + thisParam.getKey() + " in " + this + " and " + that);
}
}
}
/**
* Returns LibId of the Library to which this ImmutableCell belongs.
*/
public LibId getLibId() {
return cellId.libId;
}
/**
* Writes this ImmutableCell to IdWriter.
* @param writer where to write.
*/
void write(IdWriter writer) throws IOException {
writer.writeNodeProtoId(cellId);
writer.writeString(groupName.toString());
writer.writeLong(creationDate);
writer.writeLong(revisionDate);
writer.writeBoolean(techId != null);
if (techId != null) {
writer.writeTechId(techId);
}
writer.writeInt(flags);
super.write(writer);
writeVars(params, writer);
}
/**
* Reads ImmutableCell from SnapshotReader.
* @param reader where to read.
*/
static ImmutableCell read(IdReader reader) throws IOException {
CellId cellId = (CellId) reader.readNodeProtoId();
String groupNameString = reader.readString();
CellName groupName = CellName.parseName(groupNameString);
long creationDate = reader.readLong();
long revisionDate = reader.readLong();
boolean hasTechId = reader.readBoolean();
TechId techId = hasTechId ? reader.readTechId() : null;
int flags = reader.readInt();
boolean hasVars = reader.readBoolean();
Variable[] vars = hasVars ? readVars(reader) : Variable.NULL_ARRAY;
Variable[] params = readVars(reader);
return new ImmutableCell(cellId, groupName, creationDate, revisionDate, techId, flags, vars, params);
}
/**
* Return a hash code value for fields of this object.
* Variables of objects are not compared
*/
public int hashCodeExceptVariables() {
return cellId.hashCode();
}
/**
* Indicates whether fields of other ImmutableElectricObject are equal to fileds of this object.
* Variables of objects are not compared.
* @param o other ImmutableElectricObject.
* @return true if fields of objects are equal.
*/
public boolean equalsExceptVariables(ImmutableElectricObject o) {
if (this == o) {
return true;
}
if (!(o instanceof ImmutableCell)) {
return false;
}
ImmutableCell that = (ImmutableCell) o;
return this.cellId == that.cellId && this.groupName.equals(that.groupName)
&& this.creationDate == that.creationDate && this.revisionDate == that.revisionDate
&& this.techId == that.techId && this.flags == that.flags && Arrays.equals(this.params, that.params);
}
/**
* Checks invariant of this ImmutableCell.
* @throws AssertionError if invariant is broken.
*/
public void check() {
super.check(true);
assert cellId != null;
assert groupName.getVersion() == 0;
assert groupName.getView() == View.SCHEMATIC;
assert techId == null || techId.idManager == cellId.idManager;
for (int i = 0; i < params.length; i++) {
Variable param = params[i];
param.check(true, true);
assert param.getTextDescriptor().isParam() && param.getTextDescriptor().isInherit();
if (i > 0) {
assert params[i - 1].getKey().compareTo(param.getKey()) < 0;
}
assert searchVar(param.getKey()) < 0;
}
if (params.length > 0) {
assert paramsAllowed();
for (Variable var : getVars()) {
if (var.isAttribute()) {
assert searchVar(params, var.getKey()) < 0;
}
}
} else {
assert params == Variable.NULL_ARRAY;
}
}
/**
* Tells if parameters are allowed on this ImmutableCell.
* Currently parameters are allowed only on icon and scheamtic cells.
* @return true if parameters are allowed on this ImmutableCell
*/
public boolean paramsAllowed() {
return cellId.isIcon() || cellId.isSchematic();
}
/**
* Method to return true if bus names are allowed in this Cell
* @return true if bus names are allowed in this Cell
*/
public boolean busNamesAllowed() {
// A hack: bus names are allowed in Clipboard until Clipboard becomes a GUI object
return cellId.isIcon() || cellId.isSchematic() || cellId.libId.libName.equals("Clipboard!!");
}
@Override
public String toString() {
return cellId.toString();
}
}
