void DoRead(MonoSymbolFile file, MyBinaryReader br)
{
ArrayList lines = new ArrayList ();
bool is_hidden = false, modified = false;
int stm_line = 1, stm_offset = 0, stm_file = 1;
#if DEBUGGER_SOURCE
SourceRangeEntry source_range = null;
#endif
while (true) {
byte opcode = br.ReadByte ();
if (opcode == 0) {
byte size = br.ReadByte ();
long end_pos = br.BaseStream.Position + size;
opcode = br.ReadByte ();
if (opcode == DW_LNE_end_sequence) {
if (modified)
#if DEBUGGER_SOURCE
lines.Add (new LineNumberEntry (
stm_file, stm_line, stm_offset, is_hidden, source_range));
#else
lines.Add (new LineNumberEntry (
stm_file, stm_line, stm_offset, is_hidden));
#endif
break;
} else if (opcode == DW_LNE_MONO_negate_is_hidden) {
is_hidden = !is_hidden;
modified = true;
#if DEBUGGER_SOURCE
} else if (opcode == DW_LNE_MONO_set_source_range) {
int start_line = stm_line + br.ReadLeb128 ();
int end_line = start_line + br.ReadLeb128 ();
int start_col = br.ReadLeb128 ();
int end_col = br.ReadLeb128 ();
source_range = new SourceRangeEntry (
start_line, end_line, start_col, end_col);
#endif
} else if ((opcode >= DW_LNE_MONO__extensions_start) &&
(opcode <= DW_LNE_MONO__extensions_end)) {
; // reserved for future extensions
} else {
throw new MonoSymbolFileException (
"Unknown extended opcode {0:x} in LNT ({1})",
opcode, file.FileName);
}
br.BaseStream.Position = end_pos;
continue;
} else if (opcode < OpcodeBase) {
switch (opcode) {
case DW_LNS_copy:
#if DEBUGGER_SOURCE
lines.Add (new LineNumberEntry (
stm_file, stm_line, stm_offset, is_hidden, source_range));
source_range = null;
#else
lines.Add (new LineNumberEntry (
stm_file, stm_line, stm_offset, is_hidden));
#endif
modified = false;
break;
case DW_LNS_advance_pc:
stm_offset += br.ReadLeb128 ();
modified = true;
break;
case DW_LNS_advance_line:
stm_line += br.ReadLeb128 ();
modified = true;
break;
case DW_LNS_set_file:
stm_file = br.ReadLeb128 ();
modified = true;
break;
case DW_LNS_const_add_pc:
stm_offset += MaxAddressIncrement;
modified = true;
break;
default:
throw new MonoSymbolFileException (
"Unknown standard opcode {0:x} in LNT",
opcode);
}
} else {
opcode -= OpcodeBase;
stm_offset += opcode / LineRange;
stm_line += LineBase + (opcode % LineRange);
#if DEBUGGER_SOURCE
lines.Add (new LineNumberEntry (
stm_file, stm_line, stm_offset, is_hidden, source_range));
source_range = null;
#else
lines.Add (new LineNumberEntry (
stm_file, stm_line, stm_offset, is_hidden));
#endif
modified = false;
}
}
_line_numbers = new LineNumberEntry [lines.Count];
lines.CopyTo (_line_numbers, 0);
}
public LineNumberEntry(int file, int offset, int start_row, int end_row,
int start_col, int end_col)
: this(file, start_row, offset, false)
{
SourceRange = new SourceRangeEntry (start_row, end_row, start_col, end_col);
}
public LineNumberEntry(int file, int row, int offset, bool is_hidden,
SourceRangeEntry source_range)
: this(file, row, offset, is_hidden)
{
this.SourceRange = source_range;
}
public LineNumberEntry(int file, int row, int offset, bool is_hidden)
{
this.File = file;
this.Row = row;
this.Offset = offset;
this.IsHidden = is_hidden;
#if DEBUGGER_SOURCE
this.SourceRange = null;
#endif
}