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package org.jf.dexlib2.builder;
import com.google.common.collect.Lists;
import junit.framework.Assert;
import org.jf.dexlib2.Opcode;
import org.jf.dexlib2.builder.instruction.BuilderInstruction10t;
import org.jf.dexlib2.builder.instruction.BuilderInstruction10x;
import org.jf.dexlib2.iface.ExceptionHandler;
import org.jf.dexlib2.iface.MethodImplementation;
import org.jf.dexlib2.iface.TryBlock;
import org.jf.dexlib2.iface.debug.DebugItem;
import org.jf.dexlib2.iface.debug.LineNumber;
import org.jf.dexlib2.iface.instruction.Instruction;
import org.jf.dexlib2.iface.instruction.OffsetInstruction;
import org.junit.Test;
import java.util.List;
public class FixOffsetsTest {
@Test
public void testFixOffsets() {
MethodImplementationBuilder builder = new MethodImplementationBuilder(1);
Label firstGotoTarget = builder.getLabel("firstGotoTarget");
builder.addInstruction(new BuilderInstruction10t(Opcode.GOTO, firstGotoTarget));
builder.addLineNumber(1);
for (int i=0; i<250; i++) {
builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
}
builder.addLabel("tryStart");
builder.addLineNumber(2);
for (int i=0; i<250; i++) {
builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
}
builder.addLineNumber(3);
Label secondGotoTarget = builder.getLabel("secondGotoTarget");
builder.addInstruction(new BuilderInstruction10t(Opcode.GOTO, secondGotoTarget));
builder.addLineNumber(4);
builder.addLabel("handler");
for (int i=0; i<500; i++) {
builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
}
builder.addLineNumber(5);
builder.addLabel("tryEnd");
builder.addLabel("firstGotoTarget");
builder.addLabel("secondGotoTarget");
builder.addInstruction(new BuilderInstruction10x(Opcode.RETURN_VOID));
Label tryStart = builder.getLabel("tryStart");
Label tryEnd = builder.getLabel("tryEnd");
Label handler = builder.getLabel("handler");
builder.addCatch(tryStart, tryEnd, handler);
MethodImplementation impl = builder.getMethodImplementation();
List<? extends Instruction> instructions = Lists.newArrayList(impl.getInstructions());
Assert.assertEquals(1003, instructions.size());
Assert.assertEquals(Opcode.GOTO_16, instructions.get(0).getOpcode());
Assert.assertEquals(1004, ((OffsetInstruction)instructions.get(0)).getCodeOffset());
Assert.assertEquals(Opcode.GOTO_16, instructions.get(501).getOpcode());
Assert.assertEquals(502, ((OffsetInstruction)instructions.get(501)).getCodeOffset());
List<? extends TryBlock<? extends ExceptionHandler>> exceptionHandlers = impl.getTryBlocks();
Assert.assertEquals(1, exceptionHandlers.size());
Assert.assertEquals(252, exceptionHandlers.get(0).getStartCodeAddress());
Assert.assertEquals(752, exceptionHandlers.get(0).getCodeUnitCount());
Assert.assertEquals(1, exceptionHandlers.get(0).getExceptionHandlers().size());
ExceptionHandler exceptionHandler = exceptionHandlers.get(0).getExceptionHandlers().get(0);
Assert.assertEquals(504, exceptionHandler.getHandlerCodeAddress());
List<DebugItem> debugItems = Lists.newArrayList(impl.getDebugItems());
Assert.assertEquals(5, debugItems.size());
Assert.assertEquals(1, ((LineNumber)debugItems.get(0)).getLineNumber());
Assert.assertEquals(2, debugItems.get(0).getCodeAddress());
Assert.assertEquals(2, ((LineNumber)debugItems.get(1)).getLineNumber());
Assert.assertEquals(252, debugItems.get(1).getCodeAddress());
Assert.assertEquals(3, ((LineNumber)debugItems.get(2)).getLineNumber());
Assert.assertEquals(502, debugItems.get(2).getCodeAddress());
Assert.assertEquals(4, ((LineNumber)debugItems.get(3)).getLineNumber());
Assert.assertEquals(504, debugItems.get(3).getCodeAddress());
Assert.assertEquals(5, ((LineNumber)debugItems.get(4)).getLineNumber());
Assert.assertEquals(1004, debugItems.get(4).getCodeAddress());
}
}