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/*******************************************************************************
* Copyright (c) 2008, 2010 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tm.internal.tcf.debug.ui.model;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.tm.tcf.services.IExpressions;
import org.eclipse.tm.tcf.services.ISymbols;
import org.eclipse.tm.tcf.util.TCFDataCache;
public class TCFChildrenSubExpressions extends TCFChildren {
private final TCFNode node;
private final int par_level;
private final int par_offs;
private final int par_size;
TCFChildrenSubExpressions(TCFNode node, int par_level, int par_offs, int par_size) {
super(node.channel, 128);
this.node = node;
this.par_level = par_level;
this.par_offs = par_offs;
this.par_size = par_size;
}
void onSuspended() {
reset();
for (TCFNode n : getNodes()) {
if (n instanceof TCFNodeExpression) ((TCFNodeExpression)n).onSuspended();
if (n instanceof TCFNodeArrayPartition) ((TCFNodeArrayPartition)n).onSuspended();
}
}
void onValueChanged() {
reset();
for (TCFNode n : getNodes()) {
if (n instanceof TCFNodeExpression) ((TCFNodeExpression)n).onValueChanged();
if (n instanceof TCFNodeArrayPartition) ((TCFNodeArrayPartition)n).onValueChanged();
}
}
void onCastToTypeChanged() {
cancel();
TCFNode a[] = getNodes().toArray(new TCFNode[getNodes().size()]);
for (int i = 0; i < a.length; i++) a[i].dispose();
}
private TCFNodeExpression findField(TCFDataCache<ISymbols.Symbol> field, boolean deref) {
assert field != null;
for (TCFNode n : getNodes()) {
TCFNodeExpression e = (TCFNodeExpression)n;
if (field == e.getField() && e.isDeref() == deref) return e;
}
return null;
}
private HashMap<String,TCFNode> findFields(ISymbols.Symbol type, String[] children, boolean deref) {
int cnt = 0;
HashMap<String,TCFNode> data = new HashMap<String,TCFNode>();
for (String id : children) {
TCFDataCache<ISymbols.Symbol> field = node.getModel().getSymbolInfoCache(id);
TCFNodeExpression n = findField(field, deref);
if (n == null) n = new TCFNodeExpression(node, null, field, null, -1, deref);
n.setSortPosition(cnt++);
data.put(n.id, n);
}
return data;
}
private TCFNodeExpression findIndex(int index, boolean deref) {
assert index >= 0;
for (TCFNode n : getNodes()) {
TCFNodeExpression e = (TCFNodeExpression)n;
if (e.getIndex() == index && e.isDeref() == deref) return e;
}
return null;
}
private TCFNodeArrayPartition findPartition(int offs, int size) {
assert offs >= 0;
for (TCFNode n : getNodes()) {
TCFNodeArrayPartition e = (TCFNodeArrayPartition)n;
if (e.getOffset() == offs && e.getSize() == size) return e;
}
return null;
}
@Override
protected boolean startDataRetrieval() {
assert !isDisposed();
TCFNode exp = node;
while (exp != null) {
if (exp instanceof TCFNodeExpression) break;
exp = exp.parent;
}
TCFDataCache<ISymbols.Symbol> type_cache = ((TCFNodeExpression)exp).getType();
if (!type_cache.validate(this)) return false;
ISymbols.Symbol type_data = type_cache.getData();
if (type_data == null) {
set(null, null, new HashMap<String,TCFNode>());
return true;
}
ISymbols.TypeClass type_class = type_data.getTypeClass();
if (par_level > 0 && type_class != ISymbols.TypeClass.array) {
set(null, null, new HashMap<String,TCFNode>());
return true;
}
if (type_class == ISymbols.TypeClass.composite) {
TCFDataCache<String[]> children_cache = node.model.getSymbolChildrenCache(type_data.getID());
if (children_cache == null) {
set(null, null, new HashMap<String,TCFNode>());
return true;
}
if (!children_cache.validate(this)) return false;
String[] children_data = children_cache.getData();
Map<String,TCFNode> data = null;
if (children_data != null) data = findFields(type_data, children_data, false);
set(null, children_cache.getError(), data);
return true;
}
if (type_class == ISymbols.TypeClass.array) {
Map<String,TCFNode> data = new HashMap<String,TCFNode>();
int offs = par_level > 0 ? par_offs : 0;
int size = par_level > 0 ? par_size : type_data.getLength();
if (size <= 100) {
for (int i = offs; i < offs + size; i++) {
TCFNodeExpression n = findIndex(i, false);
if (n == null) n = new TCFNodeExpression(node, null, null, null, i, false);
n.setSortPosition(i);
data.put(n.id, n);
}
}
else {
int next_size = 100;
while (size / next_size > 100) next_size *= 100;
for (int i = offs; i < offs + size; i += next_size) {
int sz = next_size;
if (i + sz > offs + size) sz = offs + size - i;
TCFNodeArrayPartition n = findPartition(i, sz);
if (n == null) n = new TCFNodeArrayPartition(node, par_level + 1, i, sz);
data.put(n.id, n);
}
}
set(null, null, data);
return true;
}
if (type_class == ISymbols.TypeClass.pointer) {
Map<String,TCFNode> data = new HashMap<String,TCFNode>();
TCFDataCache<IExpressions.Value> value = ((TCFNodeExpression)exp).getValue();
if (!value.validate(this)) return false;
IExpressions.Value v = value.getData();
if (v != null && !isNull(v.getValue())) {
TCFDataCache<ISymbols.Symbol> base_type_cache = node.model.getSymbolInfoCache(type_data.getBaseTypeID());
if (base_type_cache != null) {
if (!base_type_cache.validate(this)) return false;
ISymbols.Symbol base_type_data = base_type_cache.getData();
if (base_type_data == null || base_type_data.getSize() != 0) {
if (base_type_data.getTypeClass() == ISymbols.TypeClass.composite) {
TCFDataCache<String[]> children_cache = node.model.getSymbolChildrenCache(base_type_data.getID());
if (children_cache != null) {
if (!children_cache.validate(this)) return false;
String[] children_data = children_cache.getData();
if (children_data != null) data = findFields(type_data, children_data, true);
}
}
else {
TCFNodeExpression n = findIndex(0, true);
if (n == null) n = new TCFNodeExpression(node, null, null, null, 0, true);
n.setSortPosition(0);
data.put(n.id, n);
}
}
}
}
set(null, null, data);
return true;
}
set(null, null, new HashMap<String,TCFNode>());
return true;
}
private boolean isNull(byte[] data) {
if (data == null) return true;
for (byte b : data) {
if (b != 0) return false;
}
return true;
}
}
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