// Author:
// Miguel de Icaza (miguel@ximian.com)
//
-// (C) 2001 Ximian, Inc.
+// (C) 2001, 2002, 2003 Ximian, Inc.
+// (C) 2004 Novell, Inc.
//
-
+//#define PRODUCTION
using System;
using System.IO;
using System.Collections;
+using System.Collections.Specialized;
using System.Reflection;
using System.Reflection.Emit;
+using System.Runtime.InteropServices;
+using System.Security;
+using System.Security.Cryptography;
+using System.Security.Permissions;
+
+using Mono.Security.Cryptography;
namespace Mono.CSharp {
/// </summary>
public class CodeGen {
static AppDomain current_domain;
- public static AssemblyBuilder AssemblyBuilder;
- public static ModuleBuilder ModuleBuilder;
-
static public SymbolWriter SymbolWriter;
+ public static AssemblyClass Assembly;
+ public static ModuleClass Module;
+
+ static CodeGen ()
+ {
+ Assembly = new AssemblyClass ();
+ Module = new ModuleClass (RootContext.Unsafe);
+ }
+
public static string Basename (string name)
{
int pos = name.LastIndexOf ('/');
//
// Initializes the symbol writer
//
- static void InitializeSymbolWriter ()
+ static void InitializeSymbolWriter (string filename)
{
- SymbolWriter = SymbolWriter.GetSymbolWriter (ModuleBuilder);
+ SymbolWriter = SymbolWriter.GetSymbolWriter (Module.Builder, filename);
//
// If we got an ISymbolWriter instance, initialize it.
//
if (SymbolWriter == null) {
Report.Warning (
- -18, "Could not find the symbol writer assembly (Mono.CSharp.Debugger.dll). This is normally an installation problem. Please make sure to compile and install the mcs/class/Mono.CSharp.Debugger directory.");
+ -18, "Could not find the symbol writer assembly (Mono.CompilerServices.SymbolWriter.dll). This is normally an installation problem. Please make sure to compile and install the mcs/class/Mono.CompilerServices.SymbolWriter directory.");
return;
}
}
//
static public void Init (string name, string output, bool want_debugging_support)
{
- AssemblyName an;
-
FileName = output;
- an = new AssemblyName ();
- an.Name = Path.GetFileNameWithoutExtension (name);
+ AssemblyName an = Assembly.GetAssemblyName (name, output);
+
+ if (an.KeyPair != null) {
+ // If we are going to strong name our assembly make
+ // sure all its refs are strong named
+ foreach (Assembly a in TypeManager.GetAssemblies ()) {
+ AssemblyName ref_name = a.GetName ();
+ byte [] b = ref_name.GetPublicKeyToken ();
+ if (b == null || b.Length == 0) {
+ Report.Warning (1577, "Assembly generation failed " +
+ "-- Referenced assembly '" +
+ ref_name.Name +
+ "' does not have a strong name.");
+ //Environment.Exit (1);
+ }
+ }
+ }
current_domain = AppDomain.CurrentDomain;
- AssemblyBuilder = current_domain.DefineDynamicAssembly (
- an, AssemblyBuilderAccess.RunAndSave, Dirname (name));
+
+ try {
+ Assembly.Builder = current_domain.DefineDynamicAssembly (an,
+ AssemblyBuilderAccess.Save, Dirname (name));
+ }
+ catch (ArgumentException) {
+ // specified key may not be exportable outside it's container
+ if (RootContext.StrongNameKeyContainer != null) {
+ Report.Error (1548, "Could not access the key inside the container `" +
+ RootContext.StrongNameKeyContainer + "'.");
+ Environment.Exit (1);
+ }
+ throw;
+ }
+ catch (CryptographicException) {
+ if ((RootContext.StrongNameKeyContainer != null) || (RootContext.StrongNameKeyFile != null)) {
+ Report.Error (1548, "Could not use the specified key to strongname the assembly.");
+ Environment.Exit (1);
+ }
+ throw;
+ }
//
// Pass a path-less name to DefineDynamicModule. Wonder how
// If the third argument is true, the ModuleBuilder will dynamically
// load the default symbol writer.
//
- ModuleBuilder = AssemblyBuilder.DefineDynamicModule (
- Basename (name), Basename (output), want_debugging_support);
+ Module.Builder = Assembly.Builder.DefineDynamicModule (
+ Basename (name), Basename (output), false);
if (want_debugging_support)
- InitializeSymbolWriter ();
+ InitializeSymbolWriter (output);
}
static public void Save (string name)
{
try {
- AssemblyBuilder.Save (Basename (name));
- } catch (System.IO.IOException io){
+ Assembly.Builder.Save (Basename (name));
+ }
+ catch (COMException) {
+ if ((RootContext.StrongNameKeyFile == null) || (!RootContext.StrongNameDelaySign))
+ throw;
+
+ // FIXME: it seems Microsoft AssemblyBuilder doesn't like to delay sign assemblies
+ Report.Error (1548, "Couldn't delay-sign the assembly with the '" +
+ RootContext.StrongNameKeyFile +
+ "', Use MCS with the Mono runtime or CSC to compile this assembly.");
+ }
+ catch (System.IO.IOException io) {
Report.Error (16, "Could not write to file `"+name+"', cause: " + io.Message);
}
+
+ if (SymbolWriter != null)
+ SymbolWriter.WriteSymbolFile ();
}
}
// variable mapping.
//
public class VariableStorage {
- ILGenerator ig;
FieldBuilder fb;
LocalBuilder local;
{
count++;
if (ec.InIterator)
- fb = IteratorHandler.Current.MapVariable ("s_", count.ToString (), t);
+ fb = ec.CurrentIterator.MapVariable ("s_", count.ToString (), t);
else
local = ec.ig.DeclareLocal (t);
- ig = ec.ig;
}
- public void EmitThis ()
+ public void EmitThis (ILGenerator ig)
{
if (fb != null)
ig.Emit (OpCodes.Ldarg_0);
}
- public void EmitStore ()
+ public void EmitStore (ILGenerator ig)
{
if (fb == null)
ig.Emit (OpCodes.Stloc, local);
ig.Emit (OpCodes.Stfld, fb);
}
- public void EmitLoad ()
+ public void EmitLoad (ILGenerator ig)
{
if (fb == null)
ig.Emit (OpCodes.Ldloc, local);
else
ig.Emit (OpCodes.Ldfld, fb);
}
+
+ public void EmitLoadAddress (ILGenerator ig)
+ {
+ if (fb == null)
+ ig.Emit (OpCodes.Ldloca, local);
+ else
+ ig.Emit (OpCodes.Ldflda, fb);
+ }
+
+ public void EmitCall (ILGenerator ig, MethodInfo mi)
+ {
+ // FIXME : we should handle a call like tostring
+ // here, where boxing is needed. However, we will
+ // never encounter that with the current usage.
+
+ bool value_type_call;
+ EmitThis (ig);
+ if (fb == null) {
+ value_type_call = local.LocalType.IsValueType;
+
+ if (value_type_call)
+ ig.Emit (OpCodes.Ldloca, local);
+ else
+ ig.Emit (OpCodes.Ldloc, local);
+ } else {
+ value_type_call = fb.FieldType.IsValueType;
+
+ if (value_type_call)
+ ig.Emit (OpCodes.Ldflda, fb);
+ else
+ ig.Emit (OpCodes.Ldfld, fb);
+ }
+
+ ig.Emit (value_type_call ? OpCodes.Call : OpCodes.Callvirt, mi);
+ }
}
/// <summary>
/// </summary>
public bool HasReturnLabel;
- /// <summary>
- /// Whether we are in a Finally block
- /// </summary>
- public bool InFinally;
-
- /// <summary>
- /// Whether we are in a Try block
- /// </summary>
- public bool InTry;
-
/// <summary>
/// Whether we are inside an iterator block.
/// </summary>
public bool InIterator;
- /// <summary>
- /// Whether we need an explicit return statement at the end of the method.
- /// </summary>
- public bool NeedExplicitReturn;
+ public bool IsLastStatement;
/// <summary>
/// Whether remapping of locals, parameters and fields is turned on.
/// </summary>
public bool RemapToProxy;
- /// <summary>
- /// Whether we are in a Catch block
- /// </summary>
- public bool InCatch;
-
/// <summary>
/// Whether we are inside an unsafe block
/// </summary>
/// <summary>
/// Whether we are inside an anonymous method.
/// </summary>
- public bool InAnonymousMethod;
+ public AnonymousMethod CurrentAnonymousMethod;
/// <summary>
/// Location for this EmitContext
/// </summary>
public bool InEnumContext;
- protected Stack FlowStack;
+ /// <summary>
+ /// Anonymous methods can capture local variables and fields,
+ /// this object tracks it. It is copied from the TopLevelBlock
+ /// field.
+ /// </summary>
+ public CaptureContext capture_context;
+
+ /// <summary>
+ /// Trace when method is called and is obsolete then this member suppress message
+ /// when call is inside next [Obsolete] method or type.
+ /// </summary>
+ public bool TestObsoleteMethodUsage = true;
+
+ /// <summary>
+ /// The current iterator
+ /// </summary>
+ public Iterator CurrentIterator;
+
+ /// <summary>
+ /// Whether we are in the resolving stage or not
+ /// </summary>
+ enum Phase {
+ Created,
+ Resolving,
+ Emitting
+ }
+
+ Phase current_phase;
+
+ FlowBranching current_flow_branching;
public EmitContext (DeclSpace parent, DeclSpace ds, Location l, ILGenerator ig,
Type return_type, int code_flags, bool is_constructor)
DeclSpace = ds;
CheckState = RootContext.Checked;
ConstantCheckState = true;
+
+ if ((return_type is TypeBuilder) && return_type.IsGenericTypeDefinition)
+ throw new Exception ("FUCK");
IsStatic = (code_flags & Modifiers.STATIC) != 0;
InIterator = (code_flags & Modifiers.METHOD_YIELDS) != 0;
IsConstructor = is_constructor;
CurrentBlock = null;
CurrentFile = 0;
+ current_phase = Phase.Created;
if (parent != null){
// Can only be null for the ResolveType contexts.
}
loc = l;
- FlowStack = new Stack ();
-
if (ReturnType == TypeManager.void_type)
ReturnType = null;
}
public FlowBranching CurrentBranching {
get {
- return (FlowBranching) FlowStack.Peek ();
+ return current_flow_branching;
+ }
+ }
+
+ public bool HaveCaptureInfo {
+ get {
+ return capture_context != null;
}
}
// </summary>
public FlowBranching StartFlowBranching (FlowBranching.BranchingType type, Location loc)
{
- FlowBranching cfb = FlowBranching.CreateBranching (CurrentBranching, type, null, loc);
-
- FlowStack.Push (cfb);
-
- return cfb;
+ current_flow_branching = FlowBranching.CreateBranching (CurrentBranching, type, null, loc);
+ return current_flow_branching;
}
// <summary>
// </summary>
public FlowBranching StartFlowBranching (Block block)
{
- FlowBranching cfb;
FlowBranching.BranchingType type;
if (CurrentBranching.Type == FlowBranching.BranchingType.Switch)
else
type = FlowBranching.BranchingType.Block;
- cfb = FlowBranching.CreateBranching (CurrentBranching, type, block, block.StartLocation);
+ current_flow_branching = FlowBranching.CreateBranching (CurrentBranching, type, block, block.StartLocation);
+ return current_flow_branching;
+ }
- FlowStack.Push (cfb);
+ public FlowBranchingException StartFlowBranching (ExceptionStatement stmt)
+ {
+ FlowBranchingException branching = new FlowBranchingException (
+ CurrentBranching, stmt);
+ current_flow_branching = branching;
+ return branching;
+ }
+
+ // <summary>
+ // Ends a code branching. Merges the state of locals and parameters
+ // from all the children of the ending branching.
+ // </summary>
+ public FlowBranching.UsageVector DoEndFlowBranching ()
+ {
+ FlowBranching old = current_flow_branching;
+ current_flow_branching = current_flow_branching.Parent;
- return cfb;
+ return current_flow_branching.MergeChild (old);
}
// <summary>
// Ends a code branching. Merges the state of locals and parameters
// from all the children of the ending branching.
// </summary>
- public FlowBranching.FlowReturns EndFlowBranching ()
+ public FlowBranching.Reachability EndFlowBranching ()
{
- FlowBranching cfb = (FlowBranching) FlowStack.Pop ();
+ FlowBranching.UsageVector vector = DoEndFlowBranching ();
- return CurrentBranching.MergeChild (cfb);
+ return vector.Reachability;
}
// <summary>
// </summary>
public void KillFlowBranching ()
{
- FlowBranching cfb = (FlowBranching) FlowStack.Pop ();
+ current_flow_branching = current_flow_branching.Parent;
+ }
+
+ public void CaptureVariable (LocalInfo li)
+ {
+ capture_context.AddLocal (CurrentAnonymousMethod, li);
+ li.IsCaptured = true;
}
- public void EmitTopBlock (Block block, InternalParameters ip, Location loc)
+ public void CaptureParameter (string name, Type t, int idx)
{
- bool has_ret = false;
+
+ capture_context.AddParameter (this, CurrentAnonymousMethod, name, t, idx);
+ }
+
+ //
+ // Use to register a field as captured
+ //
+ public void CaptureField (FieldExpr fe)
+ {
+ capture_context.AddField (fe);
+ }
+
+ //
+ // Whether anonymous methods have captured variables
+ //
+ public bool HaveCapturedVariables ()
+ {
+ if (capture_context != null)
+ return capture_context.HaveCapturedVariables;
+ return false;
+ }
+
+ //
+ // Whether anonymous methods have captured fields or this.
+ //
+ public bool HaveCapturedFields ()
+ {
+ if (capture_context != null)
+ return capture_context.HaveCapturedFields;
+ return false;
+ }
+
+ //
+ // Emits the instance pointer for the host method
+ //
+ public void EmitMethodHostInstance (EmitContext target, AnonymousMethod am)
+ {
+ if (capture_context != null)
+ capture_context.EmitMethodHostInstance (target, am);
+ else if (IsStatic)
+ target.ig.Emit (OpCodes.Ldnull);
+ else
+ target.ig.Emit (OpCodes.Ldarg_0);
+ }
+
+ //
+ // Returns whether the `local' variable has been captured by an anonymous
+ // method
+ //
+ public bool IsCaptured (LocalInfo local)
+ {
+ return capture_context.IsCaptured (local);
+ }
+
+ public bool IsParameterCaptured (string name)
+ {
+ if (capture_context != null)
+ return capture_context.IsParameterCaptured (name);
+ return false;
+ }
+
+ public void EmitMeta (ToplevelBlock b, InternalParameters ip)
+ {
+ if (capture_context != null)
+ capture_context.EmitHelperClasses (this);
+ b.EmitMeta (this);
+
+ if (HasReturnLabel)
+ ReturnLabel = ig.DefineLabel ();
+ }
+
+ //
+ // Here until we can fix the problem with Mono.CSharp.Switch, which
+ // currently can not cope with ig == null during resolve (which must
+ // be fixed for switch statements to work on anonymous methods).
+ //
+ public void EmitTopBlock (ToplevelBlock block, InternalParameters ip, Location loc)
+ {
+ if (block == null)
+ return;
+
+ bool unreachable;
+
+ if (ResolveTopBlock (null, block, ip, loc, out unreachable)){
+ EmitMeta (block, ip);
+
+ current_phase = Phase.Emitting;
+ EmitResolvedTopBlock (block, unreachable);
+ }
+ }
+
+ public bool ResolveTopBlock (EmitContext anonymous_method_host, ToplevelBlock block,
+ InternalParameters ip, Location loc, out bool unreachable)
+ {
+ current_phase = Phase.Resolving;
+
+ unreachable = false;
+
+ capture_context = block.CaptureContext;
if (!Location.IsNull (loc))
CurrentFile = loc.File;
- if (block != null){
+#if PRODUCTION
try {
+#endif
int errors = Report.Errors;
- block.EmitMeta (this, ip);
+ block.ResolveMeta (block, this, ip);
+
if (Report.Errors == errors){
bool old_do_flow_analysis = DoFlowAnalysis;
DoFlowAnalysis = true;
- FlowBranching cfb = FlowBranching.CreateBranching (
+ if (anonymous_method_host != null)
+ current_flow_branching = FlowBranching.CreateBranching (
+ anonymous_method_host.CurrentBranching, FlowBranching.BranchingType.Block,
+ block, loc);
+ else
+ current_flow_branching = FlowBranching.CreateBranching (
null, FlowBranching.BranchingType.Block, block, loc);
- FlowStack.Push (cfb);
if (!block.Resolve (this)) {
- FlowStack.Pop ();
+ current_flow_branching = null;
DoFlowAnalysis = old_do_flow_analysis;
- return;
+ return false;
}
- cfb = (FlowBranching) FlowStack.Pop ();
- FlowBranching.FlowReturns returns = cfb.MergeTopBlock ();
+ FlowBranching.Reachability reachability = current_flow_branching.MergeTopBlock ();
+ current_flow_branching = null;
DoFlowAnalysis = old_do_flow_analysis;
- has_ret = block.Emit (this);
-
- if ((returns == FlowBranching.FlowReturns.Always) ||
- (returns == FlowBranching.FlowReturns.Exception) ||
- (returns == FlowBranching.FlowReturns.Unreachable))
- has_ret = true;
-
- if (Report.Errors == errors){
- if (RootContext.WarningLevel >= 3)
- block.UsageWarning ();
+ if (reachability.AlwaysReturns ||
+ reachability.AlwaysThrows ||
+ reachability.IsUnreachable)
+ unreachable = true;
}
- }
- } catch {
+#if PRODUCTION
+ } catch (Exception e) {
Console.WriteLine ("Exception caught by the compiler while compiling:");
Console.WriteLine (" Block that caused the problem begin at: " + loc);
Console.WriteLine (" Block being compiled: [{0},{1}]",
CurrentBlock.StartLocation, CurrentBlock.EndLocation);
}
- throw;
- }
+ Console.WriteLine (e.GetType ().FullName + ": " + e.Message);
+ throw;
}
+#endif
- if (ReturnType != null && !has_ret){
- //
- // FIXME: we need full flow analysis to implement this
- // correctly and emit an error instead of a warning.
- //
- //
+ if (ReturnType != null && !unreachable){
if (!InIterator){
+ if (CurrentAnonymousMethod != null){
+ Report.Error (1643, loc, "Not all code paths return a value in anonymous method of type `{0}'",
+ CurrentAnonymousMethod.Type);
+ } else {
Report.Error (161, loc, "Not all code paths return a value");
- return;
+ }
+
+ return false;
}
}
+ block.CompleteContexts ();
+
+ return true;
+ }
+
+ public void EmitResolvedTopBlock (ToplevelBlock block, bool unreachable)
+ {
+ if (block != null)
+ block.Emit (this);
if (HasReturnLabel)
ig.MarkLabel (ReturnLabel);
+
if (return_value != null){
ig.Emit (OpCodes.Ldloc, return_value);
ig.Emit (OpCodes.Ret);
} else {
- if (!InTry){
- if (InIterator)
- has_ret = true;
-
- if (!has_ret || HasReturnLabel) {
- ig.Emit (OpCodes.Ret);
- NeedExplicitReturn = false;
- }
- }
-
- // Unfortunately, System.Reflection.Emit automatically emits a leave
- // to the end of a finally block. This is a problem if no code is
- // following the try/finally block since we may jump to a point after
- // the end of the method. As a workaround, emit an explicit ret here.
+ //
+ // If `HasReturnLabel' is set, then we already emitted a
+ // jump to the end of the method, so we must emit a `ret'
+ // there.
+ //
+ // Unfortunately, System.Reflection.Emit automatically emits
+ // a leave to the end of a finally block. This is a problem
+ // if no code is following the try/finally block since we may
+ // jump to a point after the end of the method.
+ // As a workaround, we're always creating a return label in
+ // this case.
+ //
- if (NeedExplicitReturn) {
+ if ((block != null) && block.IsDestructor) {
+ // Nothing to do; S.R.E automatically emits a leave.
+ } else if (HasReturnLabel || (!unreachable && !InIterator)) {
if (ReturnType != null)
ig.Emit (OpCodes.Ldloc, TemporaryReturn ());
ig.Emit (OpCodes.Ret);
}
}
+
+ //
+ // Close pending helper classes if we are the toplevel
+ //
+ if (capture_context != null && capture_context.ParentToplevel == null)
+ capture_context.CloseHelperClasses ();
}
/// <summary>
if (check_file && (CurrentFile != loc.File))
return;
- ig.MarkSequencePoint (null, loc.Row, 0, 0, 0);
+ CodeGen.SymbolWriter.MarkSequencePoint (ig, loc.Row, 0);
+ }
+
+ public void DefineLocalVariable (string name, LocalBuilder builder)
+ {
+ if (CodeGen.SymbolWriter == null)
+ return;
+
+ CodeGen.SymbolWriter.DefineLocalVariable (name, builder);
}
/// <summary>
/// </summary>
public Label LoopBegin, LoopEnd;
- /// <summary>
- /// Whether we are inside a loop and break/continue are possible.
- /// </summary>
- public bool InLoop;
-
- /// <summary>
- /// This is incremented each time we enter a try/catch block and
- /// decremented if we leave it.
- /// </summary>
- public int TryCatchLevel;
-
- /// <summary>
- /// The TryCatchLevel at the begin of the current loop.
- /// </summary>
- public int LoopBeginTryCatchLevel;
-
/// <summary>
/// Default target in a switch statement. Only valid if
/// InSwitch is true
/// return value from the function. By default this is not
/// used. This is only required when returns are found inside
/// Try or Catch statements.
+ ///
+ /// This method is typically invoked from the Emit phase, so
+ /// we allow the creation of a return label if it was not
+ /// requested during the resolution phase. Could be cleaned
+ /// up, but it would replicate a lot of logic in the Emit phase
+ /// of the code that uses it.
/// </summary>
public LocalBuilder TemporaryReturn ()
{
if (return_value == null){
return_value = ig.DeclareLocal (ReturnType);
+ if (!HasReturnLabel){
ReturnLabel = ig.DefineLabel ();
HasReturnLabel = true;
}
+ }
return return_value;
}
- //
- // Creates a field `name' with the type `t' on the proxy class
- //
- public FieldBuilder MapVariable (string name, Type t)
+ /// <summary>
+ /// This method is used during the Resolution phase to flag the
+ /// need to define the ReturnLabel
+ /// </summary>
+ public void NeedReturnLabel ()
{
- if (InIterator){
- return IteratorHandler.Current.MapVariable ("v_", name, t);
+ if (current_phase != Phase.Resolving){
+ //
+ // The reason is that the `ReturnLabel' is declared between
+ // resolution and emission
+ //
+ throw new Exception ("NeedReturnLabel called from Emit phase, should only be called during Resolve");
+ }
+
+ if (!InIterator && !HasReturnLabel)
+ HasReturnLabel = true;
}
-
- throw new Exception ("MapVariable for an unknown state");
- }
//
- // Invoke this routine to remap a VariableInfo into the
- // proper MemberAccess expression
+ // Creates a field `name' with the type `t' on the proxy class
//
- public Expression RemapLocal (LocalInfo local_info)
+ public FieldBuilder MapVariable (string name, Type t)
{
- FieldExpr fe = new FieldExpr (local_info.FieldBuilder, loc);
- fe.InstanceExpression = new ProxyInstance ();
- return fe.DoResolve (this);
- }
+ if (InIterator)
+ return CurrentIterator.MapVariable ("v_", name, t);
- public Expression RemapLocalLValue (LocalInfo local_info, Expression right_side)
- {
- FieldExpr fe = new FieldExpr (local_info.FieldBuilder, loc);
- fe.InstanceExpression = new ProxyInstance ();
- return fe.DoResolveLValue (this, right_side);
+ throw new Exception ("MapVariable for an unknown state");
}
public Expression RemapParameter (int idx)
{
- FieldExpr fe = new FieldExprNoAddress (IteratorHandler.Current.parameter_fields [idx], loc);
+ FieldExpr fe = new FieldExprNoAddress (CurrentIterator.parameter_fields [idx].FieldBuilder, loc);
fe.InstanceExpression = new ProxyInstance ();
return fe.DoResolve (this);
}
public Expression RemapParameterLValue (int idx, Expression right_side)
{
- FieldExpr fe = new FieldExprNoAddress (IteratorHandler.Current.parameter_fields [idx], loc);
+ FieldExpr fe = new FieldExprNoAddress (CurrentIterator.parameter_fields [idx].FieldBuilder, loc);
fe.InstanceExpression = new ProxyInstance ();
return fe.DoResolveLValue (this, right_side);
}
public void EmitThis ()
{
ig.Emit (OpCodes.Ldarg_0);
-
- if (!IsStatic){
- if (InIterator)
- ig.Emit (OpCodes.Ldfld, IteratorHandler.Current.this_field);
+ if (InIterator){
+ if (!IsStatic){
+ FieldBuilder this_field = CurrentIterator.this_field.FieldBuilder;
+ if (TypeManager.IsValueType (this_field.FieldType))
+ ig.Emit (OpCodes.Ldflda, this_field);
else
- throw new Exception ("EmitThis for an unknown state");
+ ig.Emit (OpCodes.Ldfld, this_field);
}
+ } else if (capture_context != null && CurrentAnonymousMethod != null){
+ ScopeInfo si = CurrentAnonymousMethod.Scope;
+ while (si != null){
+ if (si.ParentLink != null)
+ ig.Emit (OpCodes.Ldfld, si.ParentLink);
+ if (si.THIS != null){
+ ig.Emit (OpCodes.Ldfld, si.THIS);
+ break;
+ }
+ si = si.ParentScope;
+ }
+ }
+ }
+
+ //
+ // Emits the code necessary to load the instance required
+ // to access the captured LocalInfo
+ //
+ public void EmitCapturedVariableInstance (LocalInfo li)
+ {
+ if (RemapToProxy){
+ ig.Emit (OpCodes.Ldarg_0);
+ return;
+ }
+
+ if (capture_context == null)
+ throw new Exception ("Calling EmitCapturedContext when there is no capture_context");
+
+ capture_context.EmitCapturedVariableInstance (this, li, CurrentAnonymousMethod);
+ }
+
+ public void EmitParameter (string name)
+ {
+ capture_context.EmitParameter (this, name);
+ }
+
+ public void EmitAssignParameter (string name, Expression source, bool leave_copy, bool prepare_for_load)
+ {
+ capture_context.EmitAssignParameter (this, name, source, leave_copy, prepare_for_load);
+ }
+
+ public void EmitAddressOfParameter (string name)
+ {
+ capture_context.EmitAddressOfParameter (this, name);
}
public Expression GetThis (Location loc)
return my_this;
}
}
+
+
+ public abstract class CommonAssemblyModulClass: Attributable {
+ protected CommonAssemblyModulClass ():
+ base (null)
+ {
+ }
+
+ public void AddAttributes (ArrayList attrs)
+ {
+ if (OptAttributes == null) {
+ OptAttributes = new Attributes (attrs);
+ return;
+ }
+ OptAttributes.AddAttributes (attrs);
+ }
+
+ public virtual void Emit (TypeContainer tc)
+ {
+ if (OptAttributes == null)
+ return;
+
+ EmitContext ec = new EmitContext (tc, Mono.CSharp.Location.Null, null, null, 0, false);
+ OptAttributes.Emit (ec, this);
+ }
+
+ protected Attribute GetClsCompliantAttribute ()
+ {
+ if (OptAttributes == null)
+ return null;
+
+ // Ensure that we only have GlobalAttributes, since the Search below isn't safe with other types.
+ if (!OptAttributes.CheckTargets (this))
+ return null;
+
+ EmitContext temp_ec = new EmitContext (RootContext.Tree.Types, Mono.CSharp.Location.Null, null, null, 0, false);
+ Attribute a = OptAttributes.Search (TypeManager.cls_compliant_attribute_type, temp_ec);
+ if (a != null) {
+ a.Resolve (temp_ec);
+ }
+ return a;
+ }
+ }
+
+ public class AssemblyClass: CommonAssemblyModulClass {
+ // TODO: make it private and move all builder based methods here
+ public AssemblyBuilder Builder;
+
+ bool is_cls_compliant;
+ public Attribute ClsCompliantAttribute;
+
+ ListDictionary declarative_security;
+
+ static string[] attribute_targets = new string [] { "assembly" };
+
+ public AssemblyClass (): base ()
+ {
+ is_cls_compliant = false;
+ }
+
+ public bool IsClsCompliant {
+ get {
+ return is_cls_compliant;
+ }
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Assembly;
+ }
+ }
+
+ public override bool IsClsCompliaceRequired(DeclSpace ds)
+ {
+ return is_cls_compliant;
+ }
+
+ public void ResolveClsCompliance ()
+ {
+ ClsCompliantAttribute = GetClsCompliantAttribute ();
+ if (ClsCompliantAttribute == null)
+ return;
+
+ is_cls_compliant = ClsCompliantAttribute.GetClsCompliantAttributeValue (null);
+ }
+
+ // fix bug #56621
+ private void SetPublicKey (AssemblyName an, byte[] strongNameBlob)
+ {
+ try {
+ // check for possible ECMA key
+ if (strongNameBlob.Length == 16) {
+ // will be rejected if not "the" ECMA key
+ an.SetPublicKey (strongNameBlob);
+ }
+ else {
+ // take it, with or without, a private key
+ RSA rsa = CryptoConvert.FromCapiKeyBlob (strongNameBlob);
+ // and make sure we only feed the public part to Sys.Ref
+ byte[] publickey = CryptoConvert.ToCapiPublicKeyBlob (rsa);
+
+ // AssemblyName.SetPublicKey requires an additional header
+ byte[] publicKeyHeader = new byte [12] { 0x00, 0x24, 0x00, 0x00, 0x04, 0x80, 0x00, 0x00, 0x94, 0x00, 0x00, 0x00 };
+
+ byte[] encodedPublicKey = new byte [12 + publickey.Length];
+ Buffer.BlockCopy (publicKeyHeader, 0, encodedPublicKey, 0, 12);
+ Buffer.BlockCopy (publickey, 0, encodedPublicKey, 12, publickey.Length);
+ an.SetPublicKey (encodedPublicKey);
+ }
+ }
+ catch (Exception) {
+ Report.Error (1548, "Could not strongname the assembly. File `" +
+ RootContext.StrongNameKeyFile + "' incorrectly encoded.");
+ Environment.Exit (1);
+ }
+ }
+
+ // TODO: rewrite this code (to kill N bugs and make it faster) and use standard ApplyAttribute way.
+ public AssemblyName GetAssemblyName (string name, string output)
+ {
+ if (OptAttributes != null) {
+ foreach (Attribute a in OptAttributes.Attrs) {
+ // cannot rely on any resolve-based members before you call Resolve
+ if (a.ExplicitTarget == null || a.ExplicitTarget != "assembly")
+ continue;
+
+ // TODO: This code is buggy: comparing Attribute name without resolving it is wrong.
+ // However, this is invoked by CodeGen.Init, at which time none of the namespaces
+ // are loaded yet.
+ switch (a.Name) {
+ case "AssemblyKeyFile":
+ case "AssemblyKeyFileAttribute":
+ case "System.Reflection.AssemblyKeyFileAttribute":
+ if (RootContext.StrongNameKeyFile != null) {
+ Report.SymbolRelatedToPreviousError (a.Location, a.Name);
+ Report.Warning (1616, "Compiler option '{0}' overrides '{1}' given in source", "keyfile", "System.Reflection.AssemblyKeyFileAttribute");
+ }
+ else {
+ string value = a.GetString ();
+ if (value != String.Empty)
+ RootContext.StrongNameKeyFile = value;
+ }
+ break;
+ case "AssemblyKeyName":
+ case "AssemblyKeyNameAttribute":
+ case "System.Reflection.AssemblyKeyNameAttribute":
+ if (RootContext.StrongNameKeyContainer != null) {
+ Report.SymbolRelatedToPreviousError (a.Location, a.Name);
+ Report.Warning (1616, "keycontainer", "Compiler option '{0}' overrides '{1}' given in source", "System.Reflection.AssemblyKeyNameAttribute");
+ }
+ else {
+ string value = a.GetString ();
+ if (value != String.Empty)
+ RootContext.StrongNameKeyContainer = value;
+ }
+ break;
+ case "AssemblyDelaySign":
+ case "AssemblyDelaySignAttribute":
+ case "System.Reflection.AssemblyDelaySignAttribute":
+ RootContext.StrongNameDelaySign = a.GetBoolean ();
+ break;
+ }
+ }
+ }
+
+ AssemblyName an = new AssemblyName ();
+ an.Name = Path.GetFileNameWithoutExtension (name);
+
+ // note: delay doesn't apply when using a key container
+ if (RootContext.StrongNameKeyContainer != null) {
+ an.KeyPair = new StrongNameKeyPair (RootContext.StrongNameKeyContainer);
+ return an;
+ }
+
+ // strongname is optional
+ if (RootContext.StrongNameKeyFile == null)
+ return an;
+
+ string AssemblyDir = Path.GetDirectoryName (output);
+
+ // the StrongName key file may be relative to (a) the compiled
+ // file or (b) to the output assembly. See bugzilla #55320
+ // http://bugzilla.ximian.com/show_bug.cgi?id=55320
+
+ // (a) relative to the compiled file
+ string filename = Path.GetFullPath (RootContext.StrongNameKeyFile);
+ bool exist = File.Exists (filename);
+ if ((!exist) && (AssemblyDir != null) && (AssemblyDir != String.Empty)) {
+ // (b) relative to the outputed assembly
+ filename = Path.GetFullPath (Path.Combine (AssemblyDir, RootContext.StrongNameKeyFile));
+ exist = File.Exists (filename);
+ }
+
+ if (exist) {
+ using (FileStream fs = new FileStream (filename, FileMode.Open, FileAccess.Read)) {
+ byte[] snkeypair = new byte [fs.Length];
+ fs.Read (snkeypair, 0, snkeypair.Length);
+
+ if (RootContext.StrongNameDelaySign) {
+ // delayed signing - DO NOT include private key
+ SetPublicKey (an, snkeypair);
+ }
+ else {
+ // no delay so we make sure we have the private key
+ try {
+ CryptoConvert.FromCapiPrivateKeyBlob (snkeypair);
+ an.KeyPair = new StrongNameKeyPair (snkeypair);
+ }
+ catch (CryptographicException) {
+ if (snkeypair.Length == 16) {
+ // error # is different for ECMA key
+ Report.Error (1606, "Could not strongname the assembly. " +
+ "ECMA key can only be used to delay-sign assemblies");
+ }
+ else {
+ Report.Error (1548, "Could not strongname the assembly. File `" +
+ RootContext.StrongNameKeyFile +
+ "' doesn't have a private key.");
+ }
+ Environment.Exit (1);
+ }
+ }
+ }
+ }
+ else {
+ Report.Error (1548, "Could not strongname the assembly. File `" +
+ RootContext.StrongNameKeyFile + "' not found.");
+ Environment.Exit (1);
+ }
+ return an;
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder customBuilder)
+ {
+ if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (true)) {
+ if (declarative_security == null)
+ declarative_security = new ListDictionary ();
+
+ a.ExtractSecurityPermissionSet (declarative_security);
+ return;
+ }
+
+ Builder.SetCustomAttribute (customBuilder);
+ }
+
+ public override void Emit (TypeContainer tc)
+ {
+ base.Emit (tc);
+
+ if (declarative_security != null) {
+
+ MethodInfo add_permission = typeof (AssemblyBuilder).GetMethod ("AddPermissionRequests", BindingFlags.Instance | BindingFlags.NonPublic);
+ object builder_instance = Builder;
+
+ try {
+ // Microsoft runtime hacking
+ if (add_permission == null) {
+ Type assembly_builder = typeof (AssemblyBuilder).Assembly.GetType ("System.Reflection.Emit.AssemblyBuilderData");
+ add_permission = assembly_builder.GetMethod ("AddPermissionRequests", BindingFlags.Instance | BindingFlags.NonPublic);
+
+ FieldInfo fi = typeof (AssemblyBuilder).GetField ("m_assemblyData", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.GetField);
+ builder_instance = fi.GetValue (Builder);
+ }
+
+ object[] args = new object [] { declarative_security [SecurityAction.RequestMinimum],
+ declarative_security [SecurityAction.RequestOptional],
+ declarative_security [SecurityAction.RequestRefuse] };
+ add_permission.Invoke (builder_instance, args);
+ }
+ catch {
+ Report.RuntimeMissingSupport (Location.Null, "assembly permission setting");
+ }
+ }
+ }
+
+ public override string[] ValidAttributeTargets {
+ get {
+ return attribute_targets;
+ }
+ }
+ }
+
+ public class ModuleClass: CommonAssemblyModulClass {
+ // TODO: make it private and move all builder based methods here
+ public ModuleBuilder Builder;
+ bool m_module_is_unsafe;
+
+ static string[] attribute_targets = new string [] { "module" };
+
+ public ModuleClass (bool is_unsafe)
+ {
+ m_module_is_unsafe = is_unsafe;
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Module;
+ }
+ }
+
+ public override bool IsClsCompliaceRequired(DeclSpace ds)
+ {
+ return CodeGen.Assembly.IsClsCompliant;
+ }
+
+ public override void Emit (TypeContainer tc)
+ {
+ base.Emit (tc);
+
+ if (!m_module_is_unsafe)
+ return;
+
+ if (TypeManager.unverifiable_code_ctor == null) {
+ Console.WriteLine ("Internal error ! Cannot set unverifiable code attribute.");
+ return;
+ }
+
+ Builder.SetCustomAttribute (new CustomAttributeBuilder (TypeManager.unverifiable_code_ctor, new object [0]));
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder customBuilder)
+ {
+ if (a.Type == TypeManager.cls_compliant_attribute_type) {
+ if (CodeGen.Assembly.ClsCompliantAttribute == null) {
+ Report.Warning (3012, a.Location, "You must specify the CLSCompliant attribute on the assembly, not the module, to enable CLS compliance checking");
+ }
+ else if (CodeGen.Assembly.IsClsCompliant != a.GetBoolean ()) {
+ Report.SymbolRelatedToPreviousError (CodeGen.Assembly.ClsCompliantAttribute.Location, CodeGen.Assembly.ClsCompliantAttribute.Name);
+ Report.Error (3017, a.Location, "You cannot specify the CLSCompliant attribute on a module that differs from the CLSCompliant attribute on the assembly");
+ return;
+ }
+ }
+
+ Builder.SetCustomAttribute (customBuilder);
+ }
+
+ public override string[] ValidAttributeTargets {
+ get {
+ return attribute_targets;
+ }
+ }
+ }
}
projects / mono.git / blobdiff