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remove unused constant pool items after replacing them

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This commit is contained in:
honfika@gmail.com
2015-07-18 20:47:25 +02:00
parent 91fb53d665
commit cc4a5b7d82
2 changed files with 131 additions and 9 deletions
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1
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/Action.java
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@@ -427,6 +427,7 @@ public abstract class Action implements GraphSourceItem {
}
}
actions.removeNonReferencedConstantPoolItems();
src.setActions(actions);
} catch (InterruptedException ex) {
logger.log(Level.SEVERE, null, ex);

139
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/ActionList.java
View File

@@ -23,6 +23,7 @@ import com.jpexs.decompiler.flash.action.swf4.ActionIf;
import com.jpexs.decompiler.flash.action.swf4.ActionJump;
import com.jpexs.decompiler.flash.action.swf4.ActionPush;
import com.jpexs.decompiler.flash.action.swf4.ConstantIndex;
import com.jpexs.decompiler.flash.action.swf5.ActionConstantPool;
import com.jpexs.decompiler.flash.configuration.Configuration;
import com.jpexs.decompiler.flash.exporters.modes.ScriptExportMode;
import com.jpexs.decompiler.flash.helpers.FileTextWriter;
@@ -145,6 +146,80 @@ public class ActionList extends ArrayList<Action> {
};
}
public Iterable<ActionConstantPool> getConstantPools() {
return () -> new Iterator<ActionConstantPool>() {
private final Iterator<Action> iterator = ActionList.this.iterator();
private ActionConstantPool action = getNext();
@Override
public boolean hasNext() {
return action != null;
}
@Override
public ActionConstantPool next() {
ActionConstantPool a = action;
action = getNext();
return a;
}
private ActionConstantPool getNext() {
while (iterator.hasNext()) {
Action a = iterator.next();
if (a instanceof ActionConstantPool) {
return (ActionConstantPool) a;
}
}
return null;
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
public Iterable<ActionPush> getPushes() {
return () -> new Iterator<ActionPush>() {
private final Iterator<Action> iterator = ActionList.this.iterator();
private ActionPush action = getNext();
@Override
public boolean hasNext() {
return action != null;
}
@Override
public ActionPush next() {
ActionPush a = action;
action = getNext();
return a;
}
private ActionPush getNext() {
while (iterator.hasNext()) {
Action a = iterator.next();
if (a instanceof ActionPush) {
return (ActionPush) a;
}
}
return null;
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
public int getConstantPoolIndexReferenceCount(int index) {
int count = 0;
for (Action action : this) {
@@ -165,18 +240,64 @@ public class ActionList extends ArrayList<Action> {
}
public void inlineConstantPoolString(int index, String str) {
for (Action action : this) {
if (action instanceof ActionPush) {
ActionPush push = (ActionPush) action;
for (int i = 0; i < push.values.size(); i++) {
Object value = push.values.get(i);
if (value instanceof ConstantIndex) {
ConstantIndex constantIndex = (ConstantIndex) value;
if (constantIndex.index == index) {
push.values.set(i, str);
for (ActionPush push : getPushes()) {
for (int i = 0; i < push.values.size(); i++) {
Object value = push.values.get(i);
if (value instanceof ConstantIndex) {
ConstantIndex constantIndex = (ConstantIndex) value;
if (constantIndex.index == index) {
push.values.set(i, str);
}
}
}
}
}
public void removeNonReferencedConstantPoolItems() {
int maxSize = 0;
for (ActionConstantPool constantPool : getConstantPools()) {
maxSize = Math.max(maxSize, constantPool.constantPool.size());
}
boolean[] used = new boolean[maxSize];
for (ActionPush push : getPushes()) {
for (int i = 0; i < push.values.size(); i++) {
Object value = push.values.get(i);
if (value instanceof ConstantIndex) {
ConstantIndex constantIndex = (ConstantIndex) value;
int index = constantIndex.index;
if (index >= 0 && index < maxSize) {
used[index] = true;
}
}
}
}
int newIdx = 0;
for (int i = 0; i < maxSize; i++) {
if (used[i]) {
if (i != newIdx) {
for (ActionPush push : getPushes()) {
for (int j = 0; j < push.values.size(); j++) {
Object value = push.values.get(j);
if (value instanceof ConstantIndex) {
ConstantIndex constantIndex = (ConstantIndex) value;
if (constantIndex.index == i) {
constantIndex.index = newIdx;
}
}
}
}
}
newIdx++;
} else {
for (ActionConstantPool constantPool : getConstantPools()) {
if (constantPool.constantPool.size() > newIdx) {
constantPool.constantPool.remove(newIdx);
}
}
}
}
}