Package com.strobel.assembler.ir

Examples of com.strobel.assembler.ir.Instruction

357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
        // Step 5: Replace LeaveTry edges with EndFinally edges.
        //

        for (int n = _nodes.size(), i = n - 1; i >= 0; i--) {
            final ControlFlowNode node = _nodes.get(i);
            final Instruction end = node.getEnd();

            if (end != null &&
                node.getOutgoing().size() == 1 &&
                node.getOutgoing().get(0).getType() == JumpType.LeaveTry) {

                assert end.getOpCode() == OpCode.GOTO ||
                       end.getOpCode() == OpCode.GOTO_W;

                final ControlFlowNode handler = findInnermostFinallyHandlerNode(end.getOffset());

                final ControlFlowEdge edge = node.getOutgoing().get(0);
                final ControlFlowNode target = edge.getTarget();

                target.getIncoming().remove(edge);
View Full Code Here
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
        // Step 5b: Copy finally blocks into the LeaveTry edges.
        //

        for (int n = _nodes.size(), i = n - 1; i >= 0; i--) {
            final ControlFlowNode node = _nodes.get(i);
            final Instruction end = node.getEnd();

            if (end != null &&
                node.getOutgoing().size() == 1 &&
                node.getOutgoing().get(0).getType() == JumpType.LeaveTry) {

                assert end.getOpCode() == OpCode.GOTO ||
                       end.getOpCode() == OpCode.GOTO_W;

                final ControlFlowEdge edge = node.getOutgoing().get(0);
                final ControlFlowNode target = edge.getTarget();

                target.getIncoming().remove(edge);
                node.getOutgoing().clear();

                final ControlFlowNode handler = findInnermostExceptionHandlerNode(end.getEndOffset());

                assert handler.getNodeType() == ControlFlowNodeType.FinallyHandler;

                final ControlFlowNode copy = copyFinallySubGraph(handler, handler.getEndFinallyNode(), target);
View Full Code Here
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
                    final int[] keys = switchInfo.getKeys();
                    final Instruction[] targets = switchInfo.getTargets();

                    for (int i = 0; i < keys.length; i++) {
                        final int key = keys[i];
                        final Instruction target = targets[i];

                        _output.write("            ");
                        _output.writeLiteral(format("%1$7d", key));
                        _output.write(": ");
                        _output.writeLabel(String.valueOf(target.getOffset()));
                        _output.writeLine();
                    }

                    _output.write("            ");
                    _output.writeKeyword("default");
View Full Code Here
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
                if (matchLastAndBreak(block, switchCode = AstCode.TableSwitch, caseLabels, switchArgument, fallLabel) ||
                    matchLastAndBreak(block, switchCode = AstCode.LookupSwitch, caseLabels, switchArgument, fallLabel)) {

                    final Expression switchExpression = (Expression) blockBody.get(blockBody.size() - 2);
                    final Collection<Range> switchRanges = switchExpression.getArguments().get(0).getRanges();
                    final Instruction switchInstruction = instructions.atOffset(switchRanges.get(switchRanges.size() - 1).getStart());

                    //
                    // Replace the switch code with a Switch node.
                    //

                    final Switch switchNode = new Switch();

                    switchNode.setCondition(switchArgument.get());
                    removeTail(blockBody, switchCode, AstCode.Goto);
                    blockBody.add(switchNode);
                    result.add(block);

                    //
                    // Replace the item so it isn't picked up as content.
                    //

                    removeOrThrow(scope, node);

                    //
                    // Pull in code of cases.
                    //

                    final Label[] labels = caseLabels.get();
                    final SwitchInfo switchInfo = switchInstruction.getOperand(0);
                    final int lowValue = switchInfo.getLowValue();
                    final int[] keys = switchInfo.getKeys();
                    final Label defaultLabel = labels[0];
                    final ControlFlowNode defaultTarget = labelsToNodes.get(defaultLabel);
View Full Code Here
102
103
104
105
106
107
108
109
110
111
112
    public static void writeOperand(final ITextOutput writer, final Object operand) {
        VerifyArgument.notNull(writer, "writer");
        VerifyArgument.notNull(operand, "operand");

        if (operand instanceof Instruction) {
            final Instruction targetInstruction = (Instruction) operand;
            writeOffsetReference(writer, targetInstruction);
            return;
        }

        if (operand instanceof Instruction[]) {
View Full Code Here
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
                   _next.getOffset() <= _end.getOffset();
        }

        @Override
        public final Instruction next() {
            final Instruction next = _next;

            if (next == null ||
                next.getOffset() > _end.getOffset()) {

                throw new NoSuchElementException();
            }

            _next = next.getNext();

            return next;
        }
View Full Code Here
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
                   _next.getOffset() <= _end.getOffset();
        }

        @Override
        public final Instruction next() {
            final Instruction next = _next;

            if (next == null ||
                next.getOffset() > _end.getOffset()) {

                throw new NoSuchElementException();
            }

            _next = next.getNext();

            return next;
        }
View Full Code Here
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
        //

        final List<Instruction> instructions = _instructions;

        for (int i = 0, n = instructions.size(); i < n; i++) {
            final Instruction blockStart = instructions.get(i);
            final ExceptionHandler blockStartExceptionHandler = findInnermostExceptionHandler(blockStart.getOffset());

            //
            // See how big we can make that block...
            //
            for (; i + 1 < n; i++) {
                final Instruction instruction = instructions.get(i);
                final OpCode opCode = instruction.getOpCode();

                if (opCode.isBranch() /*|| opCode.canThrow()*/ || _hasIncomingJumps[i + 1]) {
                    break;
                }

                final Instruction next = instruction.getNext();

                if (next != null) {
                    //
                    // Ensure that blocks never contain instructions from different try blocks.
                    //
                    final ExceptionHandler innermostExceptionHandler = findInnermostExceptionHandler(next.getOffset());

                    if (innermostExceptionHandler != blockStartExceptionHandler) {
                        break;
                    }
                }
View Full Code Here
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
        final List<Instruction> instructions = _instructions;

        createEdge(_entryPoint, instructions.get(0), JumpType.Normal);

        for (final ControlFlowNode node : _nodes) {
            final Instruction end = node.getEnd();

            if (end == null || end.getOffset() >= _instructions.get(_instructions.size() - 1).getEndOffset()) {
                continue;
            }

            final OpCode endOpCode = end.getOpCode();

            //
            // Create normal edges from one instruction to the next.
            //
            if (!endOpCode.isUnconditionalBranch() || endOpCode.isJumpToSubroutine()) {
                final Instruction next = end.getNext();

                if (next != null) {
                    final boolean isHandlerStart = any(
                        _exceptionHandlers,
                        new Predicate<ExceptionHandler>() {
View Full Code Here
296
297
298
299
300
301
302
303
304
305
306
307
308
309
        //
        // Step 4: Create edges for the exceptional control flow.
        //

        for (final ControlFlowNode node : _nodes) {
            final Instruction end = node.getEnd();

            if (end != null &&
                end.getOffset() < _instructions.get(_instructions.size() - 1).getEndOffset()) {

                final ControlFlowNode innermostHandler = findInnermostExceptionHandlerNode(node.getEnd().getOffset());

                if (innermostHandler == _exceptionalExit) {
                    final ControlFlowNode handlerBlock = findInnermostHandlerBlock(node.getEnd().getOffset());
View Full Code Here
TOP

Related Classes of com.strobel.assembler.ir.Instruction

  • com.strobel.assembler.flowanalysis.ControlFlowGraphBuilder
  • com.strobel.assembler.flowanalysis.ControlFlowNode$InstructionIterator
  • com.strobel.assembler.metadata.ExceptionHandlerMapper
  • com.strobel.assembler.metadata.Label
  • com.strobel.assembler.metadata.MethodReader
  • com.strobel.decompiler.ast.LoopsAndConditions
  • com.strobel.decompiler.DecompilerHelpers
  • com.strobel.decompiler.InstructionHelper
  • com.strobel.decompiler.languages.BytecodeLanguage$InstructionPrinter
  • com.strobel.decompiler.PlainTextOutput
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.