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package org.eclipse.tm.internal.tcf.debug.actions;
import java.math.BigInteger;
import java.util.Map;
import org.eclipse.tm.internal.tcf.debug.model.TCFContextState;
import org.eclipse.tm.internal.tcf.debug.model.TCFLaunch;
import org.eclipse.tm.internal.tcf.debug.model.TCFSourceRef;
import org.eclipse.tm.tcf.protocol.IToken;
import org.eclipse.tm.tcf.protocol.Protocol;
import org.eclipse.tm.tcf.services.ILineNumbers;
import org.eclipse.tm.tcf.services.IRunControl;
import org.eclipse.tm.tcf.services.IStackTrace;
import org.eclipse.tm.tcf.services.IRunControl.RunControlContext;
import org.eclipse.tm.tcf.util.TCFDataCache;
public abstract class TCFActionStepInto extends TCFAction implements IRunControl.RunControlListener {
private final boolean src_step;
private final IRunControl rc = launch.getService(IRunControl.class);
private IRunControl.RunControlContext ctx;
private TCFDataCache<TCFContextState> state;
private TCFDataCache<TCFSourceRef> line_info;
private TCFSourceRef source_ref;
private BigInteger pc0;
private BigInteger pc1;
private int step_cnt;
protected boolean exited;
public TCFActionStepInto(TCFLaunch launch, IRunControl.RunControlContext ctx, boolean src_step) {
super(launch, ctx.getID());
this.ctx = ctx;
this.src_step = src_step;
}
protected abstract TCFDataCache<TCFContextState> getContextState();
protected abstract TCFDataCache<TCFSourceRef> getLineInfo();
protected abstract TCFDataCache<?> getStackTrace();
protected abstract TCFDataCache<IStackTrace.StackTraceContext> getStackFrame();
protected abstract int getStackFrameIndex();
public void run() {
if (exited) return;
try {
runAction();
}
catch (Throwable x) {
exit(x);
}
}
private void runAction() {
if (state == null) {
rc.addListener(this);
state = getContextState();
if (state == null) {
exit(new Exception("Invalid context ID"));
return;
}
}
if (!state.validate(this)) return;
if (!state.getData().is_suspended) {
exit(new Exception("Context is not suspended"));
return;
}
if (ctx.canResume(src_step ? IRunControl.RM_STEP_INTO_LINE : IRunControl.RM_STEP_INTO)) {
if (step_cnt > 0) return;
ctx.resume(src_step ? IRunControl.RM_STEP_INTO_LINE : IRunControl.RM_STEP_INTO, 1, new IRunControl.DoneCommand() {
public void doneCommand(IToken token, Exception error) {
exit(error);
}
});
step_cnt++;
return;
}
if (!src_step) {
exit(new Exception("Step into is not supported"));
return;
}
TCFDataCache<?> stack_trace = getStackTrace();
if (!stack_trace.validate(this)) return;
if (stack_trace.getData() == null) {
exit(stack_trace.getError());
return;
}
if (source_ref == null) {
line_info = getLineInfo();
if (!line_info.validate(this)) return;
source_ref = line_info.getData();
if (source_ref == null) {
exit(new Exception("Line info not available"));
return;
}
if (source_ref.error != null) {
exit(source_ref.error);
return;
}
ILineNumbers.CodeArea area = source_ref.area;
if (area != null) {
if (area.start_address instanceof BigInteger) pc0 = (BigInteger)area.start_address;
else if (area.start_address != null) pc0 = new BigInteger(area.start_address.toString());
if (area.end_address instanceof BigInteger) pc1 = (BigInteger)area.end_address;
else if (area.end_address != null) pc1 = new BigInteger(area.end_address.toString());
}
}
if (getStackFrameIndex() != 0) {
// Stepped out of selected function
exit(null);
return;
}
if (step_cnt > 0) {
TCFDataCache<IStackTrace.StackTraceContext> frame = getStackFrame();
if (!frame.validate(this)) return;
Number addr = frame.getData().getInstructionAddress();
BigInteger pc = addr instanceof BigInteger ? (BigInteger)addr : new BigInteger(addr.toString());
if (pc == null || pc0 == null || pc1 == null) {
exit(null);
return;
}
if (pc.compareTo(pc0) < 0 || pc.compareTo(pc1) >= 0) {
if (!line_info.validate(this)) return;
TCFSourceRef ref = line_info.getData();
if (ref != null && ref.area != null) {
if (isSameLine(source_ref.area, ref.area)) {
source_ref = ref;
ILineNumbers.CodeArea area = source_ref.area;
if (area.start_address instanceof BigInteger) pc0 = (BigInteger)area.start_address;
else if (area.start_address != null) pc0 = new BigInteger(area.start_address.toString());
if (area.end_address instanceof BigInteger) pc1 = (BigInteger)area.end_address;
else if (area.end_address != null) pc1 = new BigInteger(area.end_address.toString());
}
else {
exit(null);
return;
}
}
}
}
step_cnt++;
if (ctx.canResume(IRunControl.RM_STEP_INTO)) {
ctx.resume(IRunControl.RM_STEP_INTO, 1, new IRunControl.DoneCommand() {
public void doneCommand(IToken token, Exception error) {
if (error != null) exit(error);
}
});
}
else {
exit(new Exception("Step into is not supported"));
}
}
private boolean isSameLine(ILineNumbers.CodeArea x, ILineNumbers.CodeArea y) {
if (x == null || y == null) return false;
if (x.start_line != y.start_line) return false;
if (x.directory != y.directory && (x.directory == null || !x.directory.equals(y.directory))) return false;
if (x.file != y.file && (x.file == null || !x.file.equals(y.file))) return false;
return true;
}
protected void exit(Throwable error) {
if (exited) return;
rc.removeListener(this);
exited = true;
done("Step");
}
public void containerResumed(String[] context_ids) {
}
public void containerSuspended(String context, String pc,
String reason, Map<String, Object> params,
String[] suspended_ids) {
for (String id : suspended_ids) {
if (!id.equals(context)) contextSuspended(id, null, null, null);
}
contextSuspended(context, pc, reason, params);
}
public void contextAdded(RunControlContext[] contexts) {
}
public void contextChanged(RunControlContext[] contexts) {
for (RunControlContext c : contexts) {
if (c.getID().equals(ctx.getID())) ctx = c;
}
}
public void contextException(String context, String msg) {
if (context.equals(ctx.getID())) exit(new Exception(msg));
}
public void contextRemoved(String[] context_ids) {
for (String context : context_ids) {
if (context.equals(ctx.getID())) exit(null);
}
}
public void contextResumed(String context) {
}
public void contextSuspended(String context, String pc, String reason,
Map<String, Object> params) {
if (!context.equals(ctx.getID())) return;
if (IRunControl.REASON_STEP.equals(reason)) {
Protocol.invokeLater(this);
}
else {
exit(null);
}
}
}
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