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/*******************************************************************************
* Copyright (c) 2011-2012 Ericsson, Ecole Polytechnique de Montreal and others
*
* All rights reserved. This program and the accompanying materials are made
* available under the terms of the Eclipse Public License v1.0 which
* accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors: Matthew Khouzam - Initial API and implementation
* Contributors: Simon Marchi - Initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.ctf.core.event.types;
import org.eclipse.linuxtools.ctf.core.trace.CTFReaderException;
import org.eclipse.linuxtools.internal.ctf.core.event.io.BitBuffer;
/**
* <b><u>SequenceDefinition</u></b>
*/
public class SequenceDefinition extends Definition {
// ------------------------------------------------------------------------
// Attributes
// ------------------------------------------------------------------------
private final SequenceDeclaration declaration;
private final IntegerDefinition lengthDefinition;
private Definition definitions[];
private int currentLength;
// ------------------------------------------------------------------------
// Constructors
// ------------------------------------------------------------------------
public SequenceDefinition(SequenceDeclaration declaration,
IDefinitionScope definitionScope, String fieldName) throws CTFReaderException {
super(definitionScope, fieldName);
Definition lenDef = null;
this.declaration = declaration;
if (definitionScope != null) {
lenDef = definitionScope.lookupDefinition(declaration.getLengthName());
}
if (lenDef == null) {
throw new CTFReaderException("Sequence length field not found"); //$NON-NLS-1$
}
if (!(lenDef instanceof IntegerDefinition)) {
throw new CTFReaderException("Sequence length field not integer"); //$NON-NLS-1$
}
lengthDefinition = (IntegerDefinition) lenDef;
if (this.lengthDefinition.getDeclaration().isSigned()) {
throw new CTFReaderException("Sequence length must not be signed"); //$NON-NLS-1$
}
}
// ------------------------------------------------------------------------
// Getters/Setters/Predicates
// ------------------------------------------------------------------------
public SequenceDeclaration getDeclaration() {
return declaration;
}
public int getLength() {
return currentLength;
}
public Definition getElem(int i) {
if (i > definitions.length) {
return null;
}
return definitions[i];
}
public boolean isString() {
IntegerDeclaration elemInt;
if (declaration.getElementType() instanceof IntegerDeclaration) {
elemInt = (IntegerDeclaration) declaration.getElementType();
if (elemInt.isCharacter()) {
return true;
}
}
return false;
}
// ------------------------------------------------------------------------
// Operations
// ------------------------------------------------------------------------
@Override
public void read(BitBuffer input) {
currentLength = (int) lengthDefinition.getValue();
if ((definitions == null) || (definitions.length < currentLength)) {
Definition newDefinitions[] = new Definition[currentLength];
int i = 0;
if (definitions != null) {
for (; i < definitions.length; i++) {
newDefinitions[i] = definitions[i];
}
}
for (; i < currentLength; i++) {
newDefinitions[i] = declaration.getElementType().createDefinition(
definitionScope, fieldName + "[" + i + "]"); //$NON-NLS-1$ //$NON-NLS-2$
}
definitions = newDefinitions;
}
for (int i = 0; i < currentLength; i++) {
definitions[i].read(input);
}
}
@Override
public String toString() {
StringBuilder b = new StringBuilder();
if (this.isString()) {
for (int i = 0; i < currentLength; i++) {
IntegerDefinition character = (IntegerDefinition) definitions[i];
if (character.getValue() == 0) {
break;
}
b.append(character.toString());
}
} else {
b.append('[');
if (currentLength > 0) {
for (int i = 0; i < (currentLength - 1); i++) {
b.append(' ');
b.append(definitions[i].toString());
b.append(',');
}
b.append(' ');
b.append(definitions[currentLength - 1].toString());
}
b.append(" ]"); //$NON-NLS-1$
}
return b.toString();
}
}
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