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|
//
// System.Diagnostics.SymbolStore/MonoSymbolFile.cs
//
// Author:
// Martin Baulig (martin@gnome.org)
//
// (C) 2003 Ximian, Inc. http://www.ximian.com
//
using System;
using System.Reflection;
using System.Reflection.Emit;
using System.Collections;
using System.Text;
using System.IO;
namespace Mono.CSharp.Debugger
{
public class MonoSymbolFileException : Exception
{
public MonoSymbolFileException ()
: base ()
{ }
public MonoSymbolFileException (string message, params object[] args)
: base (String.Format (message, args))
{ }
}
internal class MyMemoryStream : Stream
{
int length;
int real_length;
int position;
int chunk_size = 4096;
ArrayList chunks = new ArrayList ();
private struct Chunk {
public readonly int Offset;
public readonly int Length;
public byte[] Buffer;
public Chunk (int offset, int length)
{
this.Offset = offset;
this.Length = length;
this.Buffer = new Byte [length];
}
}
public override long Position {
get { return position; }
set {
if (value > length)
throw new ArgumentOutOfRangeException ();
position = (int) value;
}
}
public override long Length {
get { return length; }
}
public override bool CanRead {
get { return true; }
}
public override bool CanWrite {
get { return true; }
}
public override bool CanSeek {
get { return true; }
}
public override void SetLength (long new_length)
{
if (new_length < length)
throw new ArgumentException ();
while (new_length >= real_length) {
Chunk new_chunk = new Chunk (real_length, chunk_size);
chunks.Add (new_chunk);
real_length += chunk_size;
}
length = (int) new_length;
}
public override void Flush ()
{ }
public override long Seek (long offset, SeekOrigin origin)
{
int ref_point;
switch (origin) {
case SeekOrigin.Begin:
ref_point = 0;
break;
case SeekOrigin.Current:
ref_point = position;
break;
case SeekOrigin.End:
ref_point = length;
break;
default:
throw new ArgumentException ("Invalid SeekOrigin");
}
if ((ref_point + offset < 0) || (offset > real_length))
throw new ArgumentOutOfRangeException ();
position = ref_point + (int) offset;
return position;
}
Chunk FindChunk (int offset)
{
return (Chunk) chunks [offset / chunk_size];
}
public override int Read (byte[] buffer, int offset, int count)
{
int old_count = count;
while (count > 0) {
Chunk chunk = FindChunk (position);
int coffset = position - chunk.Offset;
int rest = chunk.Length - coffset;
int size = System.Math.Min (count, rest);
Array.Copy (chunk.Buffer, coffset, buffer, offset, size);
position += size;
offset += size;
count -= size;
}
return old_count;
}
public override void Write (byte[] buffer, int offset, int count)
{
if (position + count > length)
SetLength (position + count);
while (count > 0) {
Chunk chunk = FindChunk (position);
int coffset = position - chunk.Offset;
int rest = chunk.Length - coffset;
int size = System.Math.Min (count, rest);
Array.Copy (buffer, offset, chunk.Buffer, coffset, size);
position += size;
offset += size;
count -= size;
}
}
public byte[] GetContents ()
{
byte[] retval = new byte [length];
position = 0;
Read (retval, 0, length);
return retval;
}
}
public class MonoSymbolFile : IDisposable
{
ArrayList methods = new ArrayList ();
ArrayList sources = new ArrayList ();
Hashtable method_source_hash = new Hashtable ();
Hashtable type_hash = new Hashtable ();
OffsetTable ot;
int last_type_index;
int last_method_index;
int last_source_index;
int last_namespace_index;
public MonoSymbolFile ()
{ }
internal int AddSource (SourceFileEntry source)
{
sources.Add (source);
return ++last_source_index;
}
internal int DefineType (Type type)
{
if (type_hash.Contains (type))
return (int) type_hash [type];
int index = ++last_type_index;
type_hash.Add (type, index);
return index;
}
internal void AddMethod (MethodEntry entry)
{
methods.Add (entry);
}
internal int GetNextTypeIndex ()
{
return ++last_type_index;
}
internal int GetNextMethodIndex ()
{
return ++last_method_index;
}
internal int GetNextNamespaceIndex ()
{
return ++last_namespace_index;
}
internal void WriteString (BinaryWriter bw, string text)
{
byte[] data = Encoding.UTF8.GetBytes (text);
bw.Write ((int) data.Length);
bw.Write (data);
StringSize += data.Length;
}
internal string ReadString (int offset)
{
int old_pos = (int) reader.BaseStream.Position;
reader.BaseStream.Position = offset;
int length = reader.ReadInt32 ();
byte[] data = reader.ReadBytes (length);
string text = Encoding.UTF8.GetString (data);
reader.BaseStream.Position = old_pos;
return text;
}
void Write (BinaryWriter bw)
{
// Magic number and file version.
bw.Write (OffsetTable.Magic);
bw.Write (OffsetTable.Version);
//
// Offsets of file sections; we must write this after we're done
// writing the whole file, so we just reserve the space for it here.
//
long offset_table_offset = bw.BaseStream.Position;
ot.Write (bw);
//
// Write data sections.
//
ot.DataSectionOffset = (int) bw.BaseStream.Position;
foreach (SourceFileEntry source in sources)
source.WriteData (bw);
ot.DataSectionSize = (int) bw.BaseStream.Position - ot.DataSectionOffset;
//
// Write method table.
//
ot.MethodTableOffset = (int) bw.BaseStream.Position;
for (int i = 0; i < methods.Count; i++) {
MethodEntry entry = (MethodEntry) methods [i];
entry.WriteIndex (bw);
}
ot.MethodTableSize = (int) bw.BaseStream.Position - ot.MethodTableOffset;
//
// Write source table.
//
ot.SourceTableOffset = (int) bw.BaseStream.Position;
for (int i = 0; i < sources.Count; i++) {
SourceFileEntry source = (SourceFileEntry) sources [i];
source.Write (bw);
}
ot.SourceTableSize = (int) bw.BaseStream.Position - ot.SourceTableOffset;
//
// Fixup offset table.
//
ot.TypeCount = last_type_index;
ot.MethodCount = methods.Count;
ot.SourceCount = sources.Count;
//
// Write offset table.
//
ot.TotalFileSize = (int) bw.BaseStream.Position;
bw.Seek ((int) offset_table_offset, SeekOrigin.Begin);
ot.Write (bw);
bw.Seek (0, SeekOrigin.End);
}
public byte[] CreateSymbolFile ()
{
if (reader != null)
throw new InvalidOperationException ();
using (MyMemoryStream stream = new MyMemoryStream ()) {
Write (new BinaryWriter (stream));
Console.WriteLine ("WROTE SYMFILE: {0} sources, {1} methods, {2} types, " +
"{3} line numbers, {4} locals, {5} namespaces, " +
"{6} bytes of string data",
SourceCount, MethodCount, TypeCount, LineNumberCount,
LocalCount, NamespaceCount, StringSize);
Console.WriteLine (ot);
return stream.GetContents ();
}
}
Assembly assembly;
BinaryReader reader;
Hashtable method_hash;
Hashtable source_file_hash;
Hashtable method_token_hash;
Hashtable method_name_hash;
Hashtable method_full_name_hash;
Hashtable source_name_hash;
protected MonoSymbolFile (Assembly assembly, Stream stream)
{
this.assembly = assembly;
reader = new BinaryReader (stream);
try {
long magic = reader.ReadInt64 ();
long version = reader.ReadInt32 ();
if ((magic != OffsetTable.Magic) || (version != OffsetTable.Version))
throw new MonoSymbolFileException ();
ot = new OffsetTable (reader);
} catch {
throw new MonoSymbolFileException ();
}
method_hash = new Hashtable ();
source_file_hash = new Hashtable ();
}
public static MonoSymbolFile ReadSymbolFile (Assembly assembly)
{
Stream stream = assembly.GetManifestResourceStream ("MonoSymbolFile");
if (stream == null)
return null;
return new MonoSymbolFile (assembly, stream);
}
public Assembly Assembly {
get { return assembly; }
}
public int SourceCount {
get { return ot.SourceCount; }
}
public int MethodCount {
get { return ot.MethodCount; }
}
public int TypeCount {
get { return ot.TypeCount; }
}
public int NamespaceCount {
get { return last_namespace_index; }
}
internal int LineNumberCount = 0;
internal int LocalCount = 0;
internal int StringSize = 0;
public SourceFileEntry GetSourceFile (int index)
{
if ((index < 1) || (index > ot.SourceCount))
throw new ArgumentException ();
if (reader == null)
throw new InvalidOperationException ();
SourceFileEntry source = (SourceFileEntry) source_file_hash [index];
if (source != null)
return source;
reader.BaseStream.Position = ot.SourceTableOffset +
SourceFileEntry.Size * (index - 1);
source = new SourceFileEntry (this, reader);
source_file_hash.Add (index, source);
return source;
}
public SourceFileEntry[] Sources {
get {
if (reader == null)
throw new InvalidOperationException ();
SourceFileEntry[] retval = new SourceFileEntry [SourceCount];
for (int i = 0; i < SourceCount; i++)
retval [i] = GetSourceFile (i + 1);
return retval;
}
}
public MethodIndexEntry GetMethodIndexEntry (int index)
{
int old_pos = (int) reader.BaseStream.Position;
reader.BaseStream.Position = ot.MethodTableOffset +
MethodIndexEntry.Size * (index - 1);
MethodIndexEntry ie = new MethodIndexEntry (reader);
reader.BaseStream.Position = old_pos;
return ie;
}
public MethodEntry GetMethodByToken (int token)
{
if (reader == null)
throw new InvalidOperationException ();
if (method_token_hash == null) {
method_token_hash = new Hashtable ();
for (int i = 0; i < MethodCount; i++) {
MethodIndexEntry ie = GetMethodIndexEntry (i + 1);
method_token_hash.Add (ie.Token, i);
}
}
object value = method_token_hash [token];
if (value == null)
return null;
return GetMethod ((int) value);
}
public MethodEntry GetMethod (MethodBase method)
{
if (reader == null)
throw new InvalidOperationException ();
int token = assembly.MonoDebugger_GetMethodToken (method);
return GetMethodByToken (token);
}
public MethodEntry GetMethod (int index)
{
if ((index < 1) || (index > ot.MethodCount))
throw new ArgumentException ();
if (reader == null)
throw new InvalidOperationException ();
MethodEntry entry = (MethodEntry) method_hash [index];
if (entry != null)
return entry;
MethodIndexEntry ie = GetMethodIndexEntry (index);
reader.BaseStream.Position = ie.FileOffset;
entry = new MethodEntry (this, reader, index);
method_hash.Add (index, entry);
return entry;
}
public MethodEntry[] Methods {
get {
if (reader == null)
throw new InvalidOperationException ();
MethodEntry[] retval = new MethodEntry [MethodCount];
for (int i = 0; i < MethodCount; i++)
retval [i] = GetMethod (i + 1);
return retval;
}
}
public MethodSourceEntry GetMethodSource (int index)
{
if ((index < 1) || (index > ot.MethodCount))
throw new ArgumentException ();
if (reader == null)
throw new InvalidOperationException ();
object entry = method_source_hash [index];
if (entry != null)
return (MethodSourceEntry) entry;
MethodEntry method = GetMethod (index);
foreach (MethodSourceEntry source in method.SourceFile.Methods) {
if (source.Index == index) {
method_source_hash.Add (index, source);
return source;
}
}
throw new MonoSymbolFileException ("Internal error.");
}
public int FindMethod (string full_name)
{
if (reader == null)
throw new InvalidOperationException ();
if (method_full_name_hash == null) {
method_full_name_hash = new Hashtable ();
for (int i = 0; i < ot.MethodCount; i++) {
MethodIndexEntry ie = GetMethodIndexEntry (i + 1);
string name = ReadString (ie.FullNameOffset);
method_full_name_hash.Add (name, i + 1);
}
}
object value = method_full_name_hash [full_name];
if (value == null)
return -1;
return (int) value;
}
public int[] MethodLookup (string query)
{
if (reader == null)
throw new InvalidOperationException ();
ArrayList list;
if (method_name_hash == null) {
method_name_hash = new Hashtable ();
for (int i = 0; i < ot.MethodCount; i++) {
MethodIndexEntry ie = GetMethodIndexEntry (i + 1);
string full_name = ReadString (ie.FullNameOffset);
int pos = full_name.IndexOf ('(');
string name = full_name.Substring (0, pos);
list = method_name_hash [name] as ArrayList;
if (list == null) {
list = new ArrayList ();
method_name_hash.Add (name, list);
}
list.Add (i + 1);
}
}
list = method_name_hash [query] as ArrayList;
if (list == null)
return new int [0];
int[] retval = new int [list.Count];
list.CopyTo (retval, 0);
return retval;
}
public int FindSource (string file_name)
{
if (reader == null)
throw new InvalidOperationException ();
if (source_name_hash == null) {
source_name_hash = new Hashtable ();
for (int i = 0; i < ot.SourceCount; i++) {
SourceFileEntry source = GetSourceFile (i + 1);
source_name_hash.Add (source.FileName, i);
}
}
object value = source_name_hash [file_name];
if (value == null)
return -1;
return (int) value;
}
internal BinaryReader BinaryReader {
get {
if (reader == null)
throw new InvalidOperationException ();
return reader;
}
}
void IDisposable.Dispose ()
{
Dispose (true);
}
protected virtual void Dispose (bool disposing)
{
if (disposing) {
if (reader != null) {
reader.Close ();
reader = null;
}
}
}
}
}
|