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MonoClassInfo.cs
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MonoClassInfo.cs
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using System;
using System.Collections;
using System.Collections.Generic;
using Mono.Debugger.Backend;
namespace Mono.Debugger.Languages.Mono
{
internal class MonoClassInfo : TargetClass
{
public readonly MonoSymbolFile SymbolFile;
public readonly TargetAddress KlassAddress;
public readonly TargetAddress GenericContainer;
public readonly TargetAddress GenericClass;
public readonly Cecil.TypeDefinition CecilType;
TargetType type;
IMonoStructType struct_type;
MonoClassInfo parent_info;
TargetAddress parent_klass = TargetAddress.Null;
TargetType[] field_types;
MonoFieldInfo[] fields;
int[] field_offsets;
MonoMethodInfo[] methods;
MonoPropertyInfo[] properties;
Dictionary<int,TargetAddress> methods_by_token;
public static MonoClassInfo ReadClassInfo (MonoLanguageBackend mono,
TargetMemoryAccess target,
TargetAddress klass)
{
TargetAddress image = mono.MonoRuntime.MonoClassGetMonoImage (target, klass);
MonoSymbolFile file = mono.GetImage (image);
if (file == null)
throw new InternalError ();
int token = mono.MonoRuntime.MonoClassGetToken (target, klass);
if ((token & 0xff000000) != 0x02000000)
throw new InternalError ();
Cecil.TypeDefinition typedef;
typedef = (Cecil.TypeDefinition) file.ModuleDefinition.LookupByToken (
Cecil.Metadata.TokenType.TypeDef, token & 0x00ffffff);
if (typedef == null)
throw new InternalError ();
MonoClassInfo info = new MonoClassInfo (file, typedef, target, klass);
if ((file == mono.BuiltinTypes.Corlib) &&
(typedef.FullName == "System.Decimal")) {
MonoFundamentalType ftype = mono.BuiltinTypes.DecimalType;
if (ftype.ClassType == null) {
MonoClassType ctype = new MonoClassType (file, typedef, info);
((IMonoStructType) ctype).ClassInfo = info;
ftype.SetClass (ctype);
}
info.struct_type = (IMonoStructType) ftype.ClassType;
info.type = ftype;
} else if (info.IsGenericClass) {
info.struct_type = (IMonoStructType)
file.MonoLanguage.ReadGenericClass (
target, info.GenericClass, false);
info.type = info.struct_type.Type;
} else {
info.type = file.LookupMonoType (typedef);
if (info.type is TargetStructType)
info.struct_type = (IMonoStructType) info.type;
else
info.struct_type = (IMonoStructType) info.type.ClassType;
}
info.struct_type.ClassInfo = info;
return info;
}
public static MonoClassInfo ReadCoreType (MonoSymbolFile file,
Cecil.TypeDefinition typedef,
TargetMemoryAccess target,
TargetAddress klass,
out MonoClassType type)
{
MonoClassInfo info = new MonoClassInfo (file, typedef, target, klass);
type = new MonoClassType (file, typedef, info);
((IMonoStructType) type).ClassInfo = info;
info.struct_type = type;
info.type = type;
return info;
}
protected MonoClassInfo (MonoSymbolFile file, Cecil.TypeDefinition typedef,
TargetMemoryAccess target, TargetAddress klass)
{
this.SymbolFile = file;
this.KlassAddress = klass;
this.CecilType = typedef;
parent_klass = MonoRuntime.MonoClassGetParent (target, klass);
GenericClass = MonoRuntime.MonoClassGetGenericClass (target, klass);
GenericContainer = MonoRuntime.MonoClassGetGenericContainer (target, klass);
}
protected MonoRuntime MonoRuntime {
get { return SymbolFile.MonoLanguage.MonoRuntime; }
}
public override TargetType RealType {
get { return type; }
}
public override TargetStructType Type {
get { return struct_type.Type; }
}
public bool IsGenericClass {
get { return !GenericClass.IsNull; }
}
internal int GetInstanceSize (TargetMemoryAccess target)
{
return MonoRuntime.MonoClassGetInstanceSize (target, KlassAddress);
}
internal MonoFieldInfo[] GetFields (TargetMemoryAccess target)
{
if (fields != null)
return fields;
int field_count = MonoRuntime.MonoClassGetFieldCount (target, KlassAddress);
if ((field_count != 0) && !MonoRuntime.MonoClassHasFields (target, KlassAddress))
throw new TargetException (TargetError.ClassNotInitialized);
fields = new MonoFieldInfo [field_count];
field_offsets = new int [field_count];
field_types = new TargetType [field_count];
for (int i = 0; i < field_count; i++) {
Cecil.FieldDefinition field = CecilType.Fields [i];
TargetAddress type_addr = MonoRuntime.MonoClassGetFieldType (
target, KlassAddress, i);
field_types [i] = SymbolFile.MonoLanguage.ReadType (target, type_addr);
field_offsets [i] = MonoRuntime.MonoClassGetFieldOffset (
target, KlassAddress, i);
fields [i] = new MonoFieldInfo (struct_type, field_types [i], i, field);
}
return fields;
}
public override TargetFieldInfo[] GetFields (Thread thread)
{
if (fields != null)
return fields;
thread.ThreadServant.DoTargetAccess (
delegate (TargetMemoryAccess target) {
GetFields (target);
return null;
});
return fields;
}
public override TargetObject GetField (Thread thread,
TargetStructObject instance,
TargetFieldInfo field)
{
if (field.HasConstValue)
return SymbolFile.MonoLanguage.CreateInstance (thread, field.ConstValue);
if (field.IsStatic) {
return GetStaticField (thread, field);
} else {
if (instance == null)
throw new InvalidOperationException ();
return (TargetObject) thread.ThreadServant.DoTargetAccess (
delegate (TargetMemoryAccess target) {
return GetInstanceField (target, instance, field);
});
}
}
internal TargetObject GetInstanceField (TargetMemoryAccess target,
TargetStructObject instance,
TargetFieldInfo field)
{
GetFields (target);
int offset = field_offsets [field.Position];
TargetType type = field_types [field.Position];
if (!Type.IsByRef)
offset -= 2 * target.TargetMemoryInfo.TargetAddressSize;
TargetLocation field_loc = instance.Location.GetLocationAtOffset (offset);
TargetAddress orig_addr = field_loc.GetAddress (target);
if (type.IsByRef)
field_loc = field_loc.GetDereferencedLocation ();
TargetAddress addr = field_loc.GetAddress (target);
if (field_loc.HasAddress && field_loc.GetAddress (target).IsNull)
return new MonoNullObject (type, field_loc);
return type.GetObject (target, field_loc);
}
internal TargetObject GetStaticField (Thread thread, TargetFieldInfo field)
{
if (!thread.CurrentFrame.Language.IsManaged)
throw new TargetException (TargetError.InvalidContext);
TargetAddress data_address = thread.CallMethod (
SymbolFile.MonoLanguage.MonoDebuggerInfo.ClassGetStaticFieldData,
KlassAddress, 0);
return (TargetObject) thread.ThreadServant.DoTargetAccess (
delegate (TargetMemoryAccess target) {
return GetStaticField (target, field, data_address);
});
}
internal TargetObject GetStaticField (TargetMemoryAccess target, TargetFieldInfo field,
TargetAddress data_address)
{
GetFields (target);
int offset = field_offsets [field.Position];
TargetType type = field_types [field.Position];
TargetLocation location = new AbsoluteTargetLocation (data_address);
TargetLocation field_loc = location.GetLocationAtOffset (offset);
if (type.IsByRef)
field_loc = field_loc.GetDereferencedLocation ();
return type.GetObject (target, field_loc);
}
public override void SetField (Thread thread, TargetStructObject instance,
TargetFieldInfo field, TargetObject value)
{
if (field.IsStatic) {
if (instance != null)
throw new InvalidOperationException ();
SetStaticField (thread, field, value);
} else {
if (instance == null)
throw new InvalidOperationException ();
thread.ThreadServant.DoTargetAccess (
delegate (TargetMemoryAccess target) {
SetInstanceField (target, instance, field, value);
return null;
});
}
}
internal void SetInstanceField (TargetMemoryAccess target,
TargetStructObject instance,
TargetFieldInfo field, TargetObject obj)
{
GetFields (target);
int offset = field_offsets [field.Position];
TargetType type = field_types [field.Position];
if (!Type.IsByRef)
offset -= 2 * target.TargetMemoryInfo.TargetAddressSize;
TargetLocation field_loc = instance.Location.GetLocationAtOffset (offset);
if (type.IsByRef)
field_loc = field_loc.GetDereferencedLocation ();
type.SetObject (target, field_loc, obj);
}
internal void SetStaticField (Thread thread, TargetFieldInfo field,
TargetObject obj)
{
if (!thread.CurrentFrame.Language.IsManaged)
throw new TargetException (TargetError.InvalidContext);
TargetAddress data_address = thread.CallMethod (
SymbolFile.MonoLanguage.MonoDebuggerInfo.ClassGetStaticFieldData,
KlassAddress, 0);
thread.ThreadServant.DoTargetAccess (
delegate (TargetMemoryAccess target) {
SetStaticField (target, field, data_address, obj);
return null;
});
}
internal void SetStaticField (TargetMemoryAccess target, TargetFieldInfo field,
TargetAddress data_address, TargetObject obj)
{
GetFields (target);
int offset = field_offsets [field.Position];
TargetType type = field_types [field.Position];
TargetLocation location = new AbsoluteTargetLocation (data_address);
TargetLocation field_loc = location.GetLocationAtOffset (offset);
if (type.IsByRef)
field_loc = field_loc.GetDereferencedLocation ();
type.SetObject (target, field_loc, obj);
}
internal MonoPropertyInfo[] GetProperties (TargetMemoryAccess target)
{
if (properties != null)
return properties;
properties = new MonoPropertyInfo [CecilType.Properties.Count];
for (int i = 0; i < CecilType.Properties.Count; i++) {
Cecil.PropertyDefinition prop = CecilType.Properties [i];
properties [i] = MonoPropertyInfo.Create (struct_type, i, prop);
}
return properties;
}
public override TargetPropertyInfo[] GetProperties (Thread thread)
{
return (MonoPropertyInfo []) thread.ThreadServant.DoTargetAccess (
delegate (TargetMemoryAccess target) {
return GetProperties (target);
});
}
void get_methods (TargetMemoryAccess target)
{
if (methods_by_token != null)
return;
try {
if (!MonoRuntime.MonoClassHasMethods (target, KlassAddress))
return;
int count = MonoRuntime.MonoClassGetMethodCount (target, KlassAddress);
methods_by_token = new Dictionary<int,TargetAddress> ();
for (int i = 0; i < count; i++) {
TargetAddress address = MonoRuntime.MonoClassGetMethod (
target, KlassAddress, i);
int mtoken = MonoRuntime.MonoMethodGetToken (target, address);
if (mtoken != 0)
methods_by_token.Add (mtoken, address);
}
methods = new MonoMethodInfo [CecilType.Methods.Count];
for (int i = 0; i < methods.Length; i ++) {
Cecil.MethodDefinition m = CecilType.Methods [i];
methods [i] = MonoMethodInfo.Create (struct_type, i, m);
}
} catch {
methods_by_token = null;
methods = null;
throw;
}
}
public TargetAddress GetMethodAddress (TargetMemoryAccess target, int token)
{
get_methods (target);
if ((methods_by_token == null) || !methods_by_token.ContainsKey (token))
return TargetAddress.Null;
return methods_by_token [token];
}
public override TargetMethodInfo[] GetMethods (Thread thread)
{
if (methods != null)
return methods;
thread.ThreadServant.DoTargetAccess (
delegate (TargetMemoryAccess target) {
get_methods (target);
return null;
});
return methods;
}
void get_parent (TargetMemoryAccess target)
{
parent_klass = MonoRuntime.MonoClassGetParent (target, KlassAddress);
if (parent_klass.IsNull)
return;
parent_info = ReadClassInfo (SymbolFile.MonoLanguage, target, parent_klass);
}
public override bool HasParent {
get { return !parent_klass.IsNull; }
}
internal MonoClassInfo GetParent (TargetMemoryAccess target)
{
if (parent_info != null)
return parent_info;
get_parent (target);
return parent_info;
}
public override TargetClass GetParent (Thread thread)
{
if (parent_info != null)
return parent_info;
thread.ThreadServant.DoTargetAccess (
delegate (TargetMemoryAccess target) {
get_parent (target);
return null;
});
return parent_info;
}
public override string ToString ()
{
return String.Format ("ClassInfo ({0}:{1}:{2}:{3})",
SymbolFile.Assembly.Name.Name, KlassAddress,
GenericContainer, GenericClass);
}
}
}