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Improved for continue / goto detection

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This commit is contained in:
Jindra Petřík
2021-02-08 20:15:19 +01:00
parent 96f3aee198
commit dc18fad2b3
8 changed files with 376 additions and 150 deletions
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libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/ActionGraph.java
+11 -7
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@@ -45,6 +45,7 @@ import com.jpexs.decompiler.flash.action.swf7.ActionDefineFunction2;
import com.jpexs.decompiler.flash.ecma.Null;
import com.jpexs.decompiler.graph.Graph;
import com.jpexs.decompiler.graph.GraphPart;
import com.jpexs.decompiler.graph.GraphPartEdge;
import com.jpexs.decompiler.graph.GraphSource;
import com.jpexs.decompiler.graph.GraphSourceItem;
import com.jpexs.decompiler.graph.GraphSourceItemContainer;
@@ -54,6 +55,7 @@ import com.jpexs.decompiler.graph.TranslateStack;
import com.jpexs.decompiler.graph.model.BreakItem;
import com.jpexs.decompiler.graph.model.ContinueItem;
import com.jpexs.decompiler.graph.model.DefaultItem;
import com.jpexs.decompiler.graph.model.GotoItem;
import com.jpexs.decompiler.graph.model.IfItem;
import com.jpexs.decompiler.graph.model.SwitchItem;
import com.jpexs.decompiler.graph.model.UniversalLoopItem;
@@ -331,7 +333,7 @@ public class ActionGraph extends Graph {
}
@Override
protected List<GraphTargetItem> check(Map<GraphPart, List<GraphTargetItem>> partCodes, Map<GraphPart, Integer> partCodePos, GraphSource code, BaseLocalData localData, Set<GraphPart> allParts, TranslateStack stack, GraphPart parent, GraphPart part, List<GraphPart> stopPart, List<Loop> loops, List<GraphTargetItem> output, Loop currentLoop, int staticOperation, String path) throws InterruptedException {
protected List<GraphTargetItem> check(List<GotoItem> foundGotos, List<GraphPartEdge> gotoTargets, Map<GraphPart, List<GraphTargetItem>> partCodes, Map<GraphPart, Integer> partCodePos, GraphSource code, BaseLocalData localData, Set<GraphPart> allParts, TranslateStack stack, GraphPart parent, GraphPart part, List<GraphPart> stopPart, List<Loop> loops, List<GraphTargetItem> output, Loop currentLoop, int staticOperation, String path) throws InterruptedException {
if (!output.isEmpty()) {
if (output.get(output.size() - 1) instanceof StoreRegisterActionItem) {
StoreRegisterActionItem str = (StoreRegisterActionItem) output.get(output.size() - 1);
@@ -420,7 +422,7 @@ public class ActionGraph extends Graph {
*/
//must go backwards to hit case 2, not case 1
for (int i = caseBodyParts.size() - 1; i >= 0; i--) {
if (caseBodyParts.get(i).leadsTo(localData, this, code, defaultPart, loops)) {
if (caseBodyParts.get(i).leadsTo(localData, this, code, defaultPart, loops, new ArrayList<>())) {
DefaultItem di = new DefaultItem();
caseValuesMap.add(i + 1, di);
caseBodyParts.add(i + 1, defaultPart);
@@ -441,7 +443,7 @@ public class ActionGraph extends Graph {
trace("2");
*/
for (int i = 0; i < caseBodyParts.size(); i++) {
if (defaultPart.leadsTo(localData, this, code, caseBodyParts.get(i), loops)) {
if (defaultPart.leadsTo(localData, this, code, caseBodyParts.get(i), loops, new ArrayList<>())) {
DefaultItem di = new DefaultItem();
caseValuesMap.add(i, di);
caseBodyParts.add(i, defaultPart);
@@ -464,7 +466,8 @@ public class ActionGraph extends Graph {
caseBodyParts.add(defaultPart);
}
GraphPart breakPart = getMostCommonPart(localData, caseBodyParts, loops);
GraphPart breakPart = getMostCommonPart(localData, caseBodyParts, loops, new ArrayList<>());
removeEdgeToFromList(gotoTargets, breakPart);
List<List<GraphTargetItem>> caseCommands = new ArrayList<>();
GraphPart next = breakPart;
@@ -479,6 +482,7 @@ public class ActionGraph extends Graph {
for (int i = 0; i < caseValuesMap.size(); i++) {
GraphPart cur = caseBodyParts.get(i);
if (!caseBodies.contains(cur)) {
removeEdgeToFromList(gotoTargets, cur);
caseBodies.add(cur);
}
valuesMapping.add(caseBodies.indexOf(cur));
@@ -489,7 +493,7 @@ public class ActionGraph extends Graph {
GraphPart nextCase = next;
if (next != null) {
if (i < caseBodies.size() - 1) {
if (!caseBodies.get(i).leadsTo(localData, this, code, caseBodies.get(i + 1), loops)) {
if (!caseBodies.get(i).leadsTo(localData, this, code, caseBodies.get(i + 1), loops, new ArrayList<>())) {
currentCaseCommands.add(new BreakItem(null, localData.lineStartInstruction, currentLoop.id));
} else {
nextCase = caseBodies.get(i + 1);
@@ -505,7 +509,7 @@ public class ActionGraph extends Graph {
if (breakPart != null) {
stopPart2x.add(breakPart);
}
currentCaseCommands.addAll(0, printGraph(partCodes, partCodePos, localData, stack, allParts, null, caseBodies.get(i), stopPart2x, loops, staticOperation, path));
currentCaseCommands.addAll(0, printGraph(foundGotos, gotoTargets, partCodes, partCodePos, localData, stack, allParts, null, caseBodies.get(i), stopPart2x, loops, staticOperation, path));
if (currentCaseCommands.size() >= 2) {
if (currentCaseCommands.get(currentCaseCommands.size() - 1) instanceof BreakItem) {
if ((currentCaseCommands.get(currentCaseCommands.size() - 2) instanceof ContinueItem) || (currentCaseCommands.get(currentCaseCommands.size() - 2) instanceof BreakItem)) {
@@ -558,7 +562,7 @@ public class ActionGraph extends Graph {
if (ti != null) {
ret.add(ti);
} else {
ret.addAll(printGraph(partCodes, partCodePos, localData, stack, allParts, null, next, stopPart, loops, staticOperation, path));
ret.addAll(printGraph(foundGotos, gotoTargets, partCodes, partCodePos, localData, stack, allParts, null, next, stopPart, loops, staticOperation, path));
}
}
}