public static SequencePoint GetSequencePoint(CorDebuggerSession session, CorFrame frame)
{
ISymbolReader reader = session.GetReaderForModule(frame.Function.Module);
if (reader == null)
{
return(null);
}
ISymbolMethod met = reader.GetMethod(new SymbolToken(frame.Function.Token));
if (met == null)
{
return(null);
}
int SequenceCount = met.SequencePointCount;
if (SequenceCount <= 0)
{
return(null);
}
CorDebugMappingResult mappingResult;
uint ip;
frame.GetIP(out ip, out mappingResult);
if (mappingResult == CorDebugMappingResult.MAPPING_NO_INFO || mappingResult == CorDebugMappingResult.MAPPING_UNMAPPED_ADDRESS)
{
return(null);
}
int[] offsets = new int[SequenceCount];
int[] lines = new int[SequenceCount];
int[] endLines = new int[SequenceCount];
int[] columns = new int[SequenceCount];
int[] endColumns = new int[SequenceCount];
ISymbolDocument[] docs = new ISymbolDocument[SequenceCount];
met.GetSequencePoints(offsets, docs, lines, columns, endLines, endColumns);
if ((SequenceCount > 0) && (offsets [0] <= ip))
{
int i;
for (i = 0; i < SequenceCount; ++i)
{
if (offsets [i] >= ip)
{
break;
}
}
if ((i == SequenceCount) || (offsets [i] != ip))
{
--i;
}
if (lines [i] == SpecialSequencePoint)
{
int j = i;
// let's try to find a sequence point that is not special somewhere earlier in the code
// stream.
while (j > 0)
{
--j;
if (lines [j] != SpecialSequencePoint)
{
return(new SequencePoint()
{
IsSpecial = true,
Offset = offsets [j],
StartLine = lines [j],
EndLine = endLines [j],
StartColumn = columns [j],
EndColumn = endColumns [j],
Document = docs [j]
});
}
}
// we didn't find any non-special seqeunce point before current one, let's try to search
// after.
j = i;
while (++j < SequenceCount)
{
if (lines [j] != SpecialSequencePoint)
{
return(new SequencePoint()
{
IsSpecial = true,
Offset = offsets [j],
StartLine = lines [j],
EndLine = endLines [j],
StartColumn = columns [j],
EndColumn = endColumns [j],
Document = docs [j]
});
}
}
// Even if sp is null at this point, it's a valid scenario to have only special sequence
// point in a function. For example, we can have a compiler-generated default ctor which
// doesn't have any source.
return(null);
}
else
{
return(new SequencePoint()
{
IsSpecial = false,
Offset = offsets [i],
StartLine = lines [i],
EndLine = endLines [i],
StartColumn = columns [i],
EndColumn = endColumns [i],
Document = docs [i]
});
}
}
return(null);
}
public static SequencePoint GetSequencePoint(CorDebuggerSession session, CorFrame frame)
{
ISymbolReader reader = session.GetReaderForModule (frame.Function.Module.Name);
if (reader == null)
return null;
ISymbolMethod met = reader.GetMethod (new SymbolToken (frame.Function.Token));
if (met == null)
return null;
int SequenceCount = met.SequencePointCount;
if (SequenceCount <= 0)
return null;
CorDebugMappingResult mappingResult;
uint ip;
frame.GetIP (out ip, out mappingResult);
if (mappingResult == CorDebugMappingResult.MAPPING_NO_INFO || mappingResult == CorDebugMappingResult.MAPPING_UNMAPPED_ADDRESS)
return null;
int[] offsets = new int[SequenceCount];
int[] lines = new int[SequenceCount];
int[] endLines = new int[SequenceCount];
int[] columns = new int[SequenceCount];
int[] endColumns = new int[SequenceCount];
ISymbolDocument[] docs = new ISymbolDocument[SequenceCount];
met.GetSequencePoints (offsets, docs, lines, columns, endLines, endColumns);
if ((SequenceCount > 0) && (offsets [0] <= ip)) {
int i;
for (i = 0; i < SequenceCount; ++i) {
if (offsets [i] >= ip) {
break;
}
}
if ((i == SequenceCount) || (offsets [i] != ip)) {
--i;
}
if (lines [i] == SpecialSequencePoint) {
int j = i;
// let's try to find a sequence point that is not special somewhere earlier in the code
// stream.
while (j > 0) {
--j;
if (lines [j] != SpecialSequencePoint) {
return new SequencePoint () {
IsSpecial = true,
Offset = offsets [j],
StartLine = lines [j],
EndLine = endLines [j],
StartColumn = columns [j],
EndColumn = endColumns [j],
Document = docs [j]
};
}
}
// we didn't find any non-special seqeunce point before current one, let's try to search
// after.
j = i;
while (++j < SequenceCount) {
if (lines [j] != SpecialSequencePoint) {
return new SequencePoint () {
IsSpecial = true,
Offset = offsets [j],
StartLine = lines [j],
EndLine = endLines [j],
StartColumn = columns [j],
EndColumn = endColumns [j],
Document = docs [j]
};
}
}
// Even if sp is null at this point, it's a valid scenario to have only special sequence
// point in a function. For example, we can have a compiler-generated default ctor which
// doesn't have any source.
return null;
} else {
return new SequencePoint () {
IsSpecial = false,
Offset = offsets [i],
StartLine = lines [i],
EndLine = endLines [i],
StartColumn = columns [i],
EndColumn = endColumns [i],
Document = docs [i]
};
}
}
return null;
}
