/*******************************************************************************
* PSHDL is a library and (trans-)compiler for PSHDL input. It generates
* output suitable for implementation or simulation of it.
*
* Copyright (C) 2014 Karsten Becker (feedback (at) pshdl (dot) org)
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
* This License does not grant permission to use the trade names, trademarks,
* service marks, or product names of the Licensor, except as required for
* reasonable and customary use in describing the origin of the Work.
*
* Contributors:
* Karsten Becker - initial API and implementation
******************************************************************************/
package org.pshdl.model.impl;
import java.util.EnumSet;
import java.util.Iterator;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.pshdl.model.HDLClass;
import org.pshdl.model.HDLReference;
import org.pshdl.model.HDLResolvedRef;
import org.pshdl.model.HDLVariable;
import org.pshdl.model.IHDLObject;
import org.pshdl.model.extensions.ScopingExtension;
import org.pshdl.model.utils.CopyFilter;
import org.pshdl.model.utils.HDLProblemException;
import org.pshdl.model.utils.HDLQualifiedName;
import org.pshdl.model.validation.Problem;
import org.pshdl.model.validation.builtin.ErrorCode;
import com.google.common.base.Optional;
@SuppressWarnings("all")
public abstract class AbstractHDLResolvedRef extends HDLReference {
/**
* Constructs a new instance of {@link AbstractHDLResolvedRef}
*
* @param container
* the value for container. Can be <code>null</code>.
* @param var
* the value for var. Can <b>not</b> be <code>null</code>.
* @param validate
* if <code>true</code> the parameters will be validated.
*/
public AbstractHDLResolvedRef(int id, @Nullable IHDLObject container, @Nonnull HDLQualifiedName var, boolean validate) {
super(id, container, validate);
if (validate) {
var = validateVar(var);
}
this.var = var;
}
public AbstractHDLResolvedRef() {
super();
this.var = null;
}
protected final HDLQualifiedName var;
@Nullable
public Optional<HDLVariable> resolveVar() {
if (!frozen)
throw new IllegalArgumentException("Object not frozen");
return ScopingExtension.INST.resolveVariable(this, var);
}
public HDLQualifiedName getVarRefName() {
return var;
}
protected HDLQualifiedName validateVar(HDLQualifiedName var) {
if (var == null)
throw new IllegalArgumentException("The field var can not be null!");
return var;
}
@Nonnull
public abstract HDLResolvedRef setVar(@Nonnull HDLQualifiedName var);
/**
* Creates a copy of this class with the same fields.
*
* @return a new instance of this class.
*/
@Override
@Nonnull
public abstract HDLResolvedRef copy();
/**
* Creates a copy of this class with the same fields.
*
* @return a new instance of this class.
*/
@Override
@Nonnull
public abstract HDLResolvedRef copyFiltered(CopyFilter filter);
/**
* Creates a deep copy of this class with the same fields and frozen
*
* @return a new instance of this class.
*/
@Override
@Nonnull
public abstract HDLResolvedRef copyDeepFrozen(IHDLObject container);
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof AbstractHDLResolvedRef))
return false;
if (!super.equals(obj))
return false;
final AbstractHDLResolvedRef other = (AbstractHDLResolvedRef) obj;
if (var == null) {
if (other.var != null)
return false;
} else if (!var.equals(other.var))
return false;
return true;
}
private Integer hashCache;
@Override
public int hashCode() {
if (hashCache != null)
return hashCache;
int result = super.hashCode();
final int prime = 31;
result = (prime * result) + ((var == null) ? 0 : var.hashCode());
hashCache = result;
return result;
}
@Override
public String toConstructionString(String spacing) {
final boolean first = true;
final StringBuilder sb = new StringBuilder();
sb.append('\n').append(spacing).append("new HDLResolvedRef()");
if (var != null) {
sb.append(".setVar(HDLQualifiedName.create(\"").append(var).append("\"))");
}
return sb.toString();
}
@Override
public void validateAllFields(IHDLObject expectedParent, boolean checkResolve) {
super.validateAllFields(expectedParent, checkResolve);
validateVar(getVarRefName());
if (checkResolve && (getVarRefName() != null))
if (!resolveVar().isPresent())
throw new HDLProblemException(new Problem(ErrorCode.UNRESOLVED_REFERENCE, this, "to:" + getVarRefName()));
}
@Override
public EnumSet<HDLClass> getClassSet() {
return EnumSet.of(HDLClass.HDLResolvedRef, HDLClass.HDLReference, HDLClass.HDLExpression, HDLClass.HDLObject);
}
@Override
public Iterator<IHDLObject> deepIterator() {
return new Iterator<IHDLObject>() {
private int pos = 0;
private Iterator<? extends IHDLObject> current;
@Override
public boolean hasNext() {
if ((current != null) && !current.hasNext()) {
current = null;
}
while (current == null) {
switch (pos++) {
default:
return false;
}
}
return (current != null) && current.hasNext();
}
@Override
public IHDLObject next() {
return current.next();
}
@Override
public void remove() {
throw new IllegalArgumentException("Not supported");
}
};
}
@Override
public Iterator<IHDLObject> iterator() {
return new Iterator<IHDLObject>() {
private int pos = 0;
private Iterator<? extends IHDLObject> current;
@Override
public boolean hasNext() {
if ((current != null) && !current.hasNext()) {
current = null;
}
while (current == null) {
switch (pos++) {
default:
return false;
}
}
return (current != null) && current.hasNext();
}
@Override
public IHDLObject next() {
return current.next();
}
@Override
public void remove() {
throw new IllegalArgumentException("Not supported");
}
};
}
}