2 // codegen.cs: The code generator
5 // Miguel de Icaza (miguel@ximian.com)
7 // (C) 2001, 2002, 2003 Ximian, Inc.
8 // (C) 2004 Novell, Inc.
13 using System.Collections;
14 using System.Collections.Specialized;
15 using System.Reflection;
16 using System.Reflection.Emit;
17 using System.Runtime.InteropServices;
18 using System.Security;
19 using System.Security.Cryptography;
20 using System.Security.Permissions;
22 using Mono.Security.Cryptography;
24 namespace Mono.CSharp {
27 /// Code generator class.
29 public class CodeGen {
30 static AppDomain current_domain;
31 static public SymbolWriter SymbolWriter;
33 public static AssemblyClass Assembly;
34 public static ModuleClass Module;
38 Assembly = new AssemblyClass ();
39 Module = new ModuleClass (RootContext.Unsafe);
42 public static string Basename (string name)
44 int pos = name.LastIndexOf ('/');
47 return name.Substring (pos + 1);
49 pos = name.LastIndexOf ('\\');
51 return name.Substring (pos + 1);
56 public static string Dirname (string name)
58 int pos = name.LastIndexOf ('/');
61 return name.Substring (0, pos);
63 pos = name.LastIndexOf ('\\');
65 return name.Substring (0, pos);
70 static string TrimExt (string name)
72 int pos = name.LastIndexOf ('.');
74 return name.Substring (0, pos);
77 static public string FileName;
80 // Initializes the symbol writer
82 static void InitializeSymbolWriter (string filename)
84 SymbolWriter = SymbolWriter.GetSymbolWriter (Module.Builder, filename);
87 // If we got an ISymbolWriter instance, initialize it.
89 if (SymbolWriter == null) {
91 -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.");
97 // Initializes the code generator variables
99 static public void Init (string name, string output, bool want_debugging_support)
102 AssemblyName an = Assembly.GetAssemblyName (name, output);
104 if (an.KeyPair != null) {
105 // If we are going to strong name our assembly make
106 // sure all its refs are strong named
107 foreach (Assembly a in TypeManager.GetAssemblies ()) {
108 AssemblyName ref_name = a.GetName ();
109 byte [] b = ref_name.GetPublicKeyToken ();
110 if (b == null || b.Length == 0) {
111 Report.Warning (1577, "Assembly generation failed " +
112 "-- Referenced assembly '" +
114 "' does not have a strong name.");
115 //Environment.Exit (1);
120 current_domain = AppDomain.CurrentDomain;
123 Assembly.Builder = current_domain.DefineDynamicAssembly (an,
124 AssemblyBuilderAccess.Save, Dirname (name));
126 catch (ArgumentException) {
127 // specified key may not be exportable outside it's container
128 if (RootContext.StrongNameKeyContainer != null) {
129 Report.Error (1548, "Could not access the key inside the container `" +
130 RootContext.StrongNameKeyContainer + "'.");
131 Environment.Exit (1);
135 catch (CryptographicException) {
136 if ((RootContext.StrongNameKeyContainer != null) || (RootContext.StrongNameKeyFile != null)) {
137 Report.Error (1548, "Could not use the specified key to strongname the assembly.");
138 Environment.Exit (1);
144 // Pass a path-less name to DefineDynamicModule. Wonder how
145 // this copes with output in different directories then.
146 // FIXME: figure out how this copes with --output /tmp/blah
148 // If the third argument is true, the ModuleBuilder will dynamically
149 // load the default symbol writer.
151 Module.Builder = Assembly.Builder.DefineDynamicModule (
152 Basename (name), Basename (output), false);
154 if (want_debugging_support)
155 InitializeSymbolWriter (output);
158 static public void Save (string name)
161 Assembly.Builder.Save (Basename (name));
163 catch (COMException) {
164 if ((RootContext.StrongNameKeyFile == null) || (!RootContext.StrongNameDelaySign))
167 // FIXME: it seems Microsoft AssemblyBuilder doesn't like to delay sign assemblies
168 Report.Error (1548, "Couldn't delay-sign the assembly with the '" +
169 RootContext.StrongNameKeyFile +
170 "', Use MCS with the Mono runtime or CSC to compile this assembly.");
172 catch (System.IO.IOException io) {
173 Report.Error (16, "Could not write to file `"+name+"', cause: " + io.Message);
176 if (SymbolWriter != null)
177 SymbolWriter.WriteSymbolFile ();
182 // Provides "local" store across code that can yield: locals
183 // or fields, notice that this should not be used by anonymous
184 // methods to create local storage, those only require
187 public class VariableStorage {
193 public VariableStorage (EmitContext ec, Type t)
197 fb = ec.CurrentIterator.MapVariable ("s_", count.ToString (), t);
199 local = ec.ig.DeclareLocal (t);
202 public void EmitThis (ILGenerator ig)
205 ig.Emit (OpCodes.Ldarg_0);
208 public void EmitStore (ILGenerator ig)
211 ig.Emit (OpCodes.Stloc, local);
213 ig.Emit (OpCodes.Stfld, fb);
216 public void EmitLoad (ILGenerator ig)
219 ig.Emit (OpCodes.Ldloc, local);
221 ig.Emit (OpCodes.Ldfld, fb);
224 public void EmitLoadAddress (ILGenerator ig)
227 ig.Emit (OpCodes.Ldloca, local);
229 ig.Emit (OpCodes.Ldflda, fb);
232 public void EmitCall (ILGenerator ig, MethodInfo mi)
234 // FIXME : we should handle a call like tostring
235 // here, where boxing is needed. However, we will
236 // never encounter that with the current usage.
238 bool value_type_call;
241 value_type_call = local.LocalType.IsValueType;
244 ig.Emit (OpCodes.Ldloca, local);
246 ig.Emit (OpCodes.Ldloc, local);
248 value_type_call = fb.FieldType.IsValueType;
251 ig.Emit (OpCodes.Ldflda, fb);
253 ig.Emit (OpCodes.Ldfld, fb);
256 ig.Emit (value_type_call ? OpCodes.Call : OpCodes.Callvirt, mi);
261 /// An Emit Context is created for each body of code (from methods,
262 /// properties bodies, indexer bodies or constructor bodies)
264 public class EmitContext {
265 public DeclSpace DeclSpace;
266 public DeclSpace TypeContainer;
267 public ILGenerator ig;
270 /// This variable tracks the `checked' state of the compilation,
271 /// it controls whether we should generate code that does overflow
272 /// checking, or if we generate code that ignores overflows.
274 /// The default setting comes from the command line option to generate
275 /// checked or unchecked code plus any source code changes using the
276 /// checked/unchecked statements or expressions. Contrast this with
277 /// the ConstantCheckState flag.
280 public bool CheckState;
283 /// The constant check state is always set to `true' and cant be changed
284 /// from the command line. The source code can change this setting with
285 /// the `checked' and `unchecked' statements and expressions.
287 public bool ConstantCheckState;
290 /// Whether we are emitting code inside a static or instance method
292 public bool IsStatic;
295 /// Whether we are emitting a field initializer
297 public bool IsFieldInitializer;
300 /// The value that is allowed to be returned or NULL if there is no
303 public Type ReturnType;
306 /// Points to the Type (extracted from the TypeContainer) that
307 /// declares this body of code
309 public Type ContainerType;
312 /// Whether this is generating code for a constructor
314 public bool IsConstructor;
317 /// Whether we're control flow analysis enabled
319 public bool DoFlowAnalysis;
322 /// Keeps track of the Type to LocalBuilder temporary storage created
323 /// to store structures (used to compute the address of the structure
324 /// value on structure method invocations)
326 public Hashtable temporary_storage;
328 public Block CurrentBlock;
330 public int CurrentFile;
333 /// The location where we store the return value.
335 LocalBuilder return_value;
338 /// The location where return has to jump to return the
341 public Label ReturnLabel;
344 /// If we already defined the ReturnLabel
346 public bool HasReturnLabel;
349 /// Whether we are inside an iterator block.
351 public bool InIterator;
353 public bool IsLastStatement;
356 /// Whether remapping of locals, parameters and fields is turned on.
357 /// Used by iterators and anonymous methods.
359 public bool RemapToProxy;
362 /// Whether we are inside an unsafe block
364 public bool InUnsafe;
367 /// Whether we are in a `fixed' initialization
369 public bool InFixedInitializer;
372 /// Whether we are inside an anonymous method.
374 public AnonymousMethod CurrentAnonymousMethod;
377 /// Location for this EmitContext
382 /// Used to flag that it is ok to define types recursively, as the
383 /// expressions are being evaluated as part of the type lookup
384 /// during the type resolution process
386 public bool ResolvingTypeTree;
389 /// Inside an enum definition, we do not resolve enumeration values
390 /// to their enumerations, but rather to the underlying type/value
391 /// This is so EnumVal + EnumValB can be evaluated.
393 /// There is no "E operator + (E x, E y)", so during an enum evaluation
394 /// we relax the rules
396 public bool InEnumContext;
399 /// Anonymous methods can capture local variables and fields,
400 /// this object tracks it. It is copied from the TopLevelBlock
403 public CaptureContext capture_context;
406 /// Trace when method is called and is obsolete then this member suppress message
407 /// when call is inside next [Obsolete] method or type.
409 public bool TestObsoleteMethodUsage = true;
412 /// The current iterator
414 public Iterator CurrentIterator;
417 /// Whether we are in the resolving stage or not
427 FlowBranching current_flow_branching;
429 public EmitContext (DeclSpace parent, DeclSpace ds, Location l, ILGenerator ig,
430 Type return_type, int code_flags, bool is_constructor)
434 TypeContainer = parent;
436 CheckState = RootContext.Checked;
437 ConstantCheckState = true;
439 if ((return_type is TypeBuilder) && return_type.IsGenericTypeDefinition)
440 throw new Exception ("FUCK");
442 IsStatic = (code_flags & Modifiers.STATIC) != 0;
443 InIterator = (code_flags & Modifiers.METHOD_YIELDS) != 0;
444 RemapToProxy = InIterator;
445 ReturnType = return_type;
446 IsConstructor = is_constructor;
449 current_phase = Phase.Created;
452 // Can only be null for the ResolveType contexts.
453 ContainerType = parent.TypeBuilder;
454 if (parent.UnsafeContext)
457 InUnsafe = (code_flags & Modifiers.UNSAFE) != 0;
461 if (ReturnType == TypeManager.void_type)
465 public EmitContext (TypeContainer tc, Location l, ILGenerator ig,
466 Type return_type, int code_flags, bool is_constructor)
467 : this (tc, tc, l, ig, return_type, code_flags, is_constructor)
471 public EmitContext (TypeContainer tc, Location l, ILGenerator ig,
472 Type return_type, int code_flags)
473 : this (tc, tc, l, ig, return_type, code_flags, false)
477 public FlowBranching CurrentBranching {
479 return current_flow_branching;
483 public bool HaveCaptureInfo {
485 return capture_context != null;
490 // Starts a new code branching. This inherits the state of all local
491 // variables and parameters from the current branching.
493 public FlowBranching StartFlowBranching (FlowBranching.BranchingType type, Location loc)
495 current_flow_branching = FlowBranching.CreateBranching (CurrentBranching, type, null, loc);
496 return current_flow_branching;
500 // Starts a new code branching for block `block'.
502 public FlowBranching StartFlowBranching (Block block)
504 FlowBranching.BranchingType type;
506 if (CurrentBranching.Type == FlowBranching.BranchingType.Switch)
507 type = FlowBranching.BranchingType.SwitchSection;
509 type = FlowBranching.BranchingType.Block;
511 current_flow_branching = FlowBranching.CreateBranching (CurrentBranching, type, block, block.StartLocation);
512 return current_flow_branching;
515 public FlowBranchingException StartFlowBranching (ExceptionStatement stmt)
517 FlowBranchingException branching = new FlowBranchingException (
518 CurrentBranching, stmt);
519 current_flow_branching = branching;
524 // Ends a code branching. Merges the state of locals and parameters
525 // from all the children of the ending branching.
527 public FlowBranching.UsageVector DoEndFlowBranching ()
529 FlowBranching old = current_flow_branching;
530 current_flow_branching = current_flow_branching.Parent;
532 return current_flow_branching.MergeChild (old);
536 // Ends a code branching. Merges the state of locals and parameters
537 // from all the children of the ending branching.
539 public FlowBranching.Reachability EndFlowBranching ()
541 FlowBranching.UsageVector vector = DoEndFlowBranching ();
543 return vector.Reachability;
547 // Kills the current code branching. This throws away any changed state
548 // information and should only be used in case of an error.
550 public void KillFlowBranching ()
552 current_flow_branching = current_flow_branching.Parent;
555 public void CaptureVariable (LocalInfo li)
557 capture_context.AddLocal (CurrentAnonymousMethod, li);
558 li.IsCaptured = true;
561 public void CaptureParameter (string name, Type t, int idx)
563 capture_context.AddParameter (this, CurrentAnonymousMethod, name, t, idx);
567 // Use to register a field as captured
569 public void CaptureField (FieldExpr fe)
571 capture_context.AddField (fe);
575 // Whether anonymous methods have captured variables
577 public bool HaveCapturedVariables ()
579 if (capture_context != null)
580 return capture_context.HaveCapturedVariables;
585 // Whether anonymous methods have captured fields or this.
587 public bool HaveCapturedFields ()
589 if (capture_context != null)
590 return capture_context.HaveCapturedFields;
595 // Emits the instance pointer for the host method
597 public void EmitMethodHostInstance (EmitContext target, AnonymousMethod am)
599 if (capture_context != null)
600 capture_context.EmitMethodHostInstance (target, am);
602 target.ig.Emit (OpCodes.Ldnull);
604 target.ig.Emit (OpCodes.Ldarg_0);
608 // Returns whether the `local' variable has been captured by an anonymous
611 public bool IsCaptured (LocalInfo local)
613 return capture_context.IsCaptured (local);
616 public bool IsParameterCaptured (string name)
618 if (capture_context != null)
619 return capture_context.IsParameterCaptured (name);
623 public void EmitMeta (ToplevelBlock b, InternalParameters ip)
625 if (capture_context != null)
626 capture_context.EmitAnonymousHelperClasses (this);
630 ReturnLabel = ig.DefineLabel ();
634 // Here until we can fix the problem with Mono.CSharp.Switch, which
635 // currently can not cope with ig == null during resolve (which must
636 // be fixed for switch statements to work on anonymous methods).
638 public void EmitTopBlock (ToplevelBlock block, InternalParameters ip, Location loc)
645 if (ResolveTopBlock (null, block, ip, loc, out unreachable)){
646 EmitMeta (block, ip);
648 current_phase = Phase.Emitting;
649 EmitResolvedTopBlock (block, unreachable);
653 public bool ResolveTopBlock (EmitContext anonymous_method_host, ToplevelBlock block,
654 InternalParameters ip, Location loc, out bool unreachable)
656 current_phase = Phase.Resolving;
660 capture_context = block.CaptureContext;
662 if (!Location.IsNull (loc))
663 CurrentFile = loc.File;
668 int errors = Report.Errors;
670 block.ResolveMeta (block, this, ip);
673 if (Report.Errors == errors){
674 bool old_do_flow_analysis = DoFlowAnalysis;
675 DoFlowAnalysis = true;
677 if (anonymous_method_host != null)
678 current_flow_branching = FlowBranching.CreateBranching (
679 anonymous_method_host.CurrentBranching, FlowBranching.BranchingType.Block,
682 current_flow_branching = FlowBranching.CreateBranching (
683 null, FlowBranching.BranchingType.Block, block, loc);
685 if (!block.Resolve (this)) {
686 current_flow_branching = null;
687 DoFlowAnalysis = old_do_flow_analysis;
691 FlowBranching.Reachability reachability = current_flow_branching.MergeTopBlock ();
692 current_flow_branching = null;
694 DoFlowAnalysis = old_do_flow_analysis;
696 if (reachability.AlwaysReturns ||
697 reachability.AlwaysThrows ||
698 reachability.IsUnreachable)
702 } catch (Exception e) {
703 Console.WriteLine ("Exception caught by the compiler while compiling:");
704 Console.WriteLine (" Block that caused the problem begin at: " + loc);
706 if (CurrentBlock != null){
707 Console.WriteLine (" Block being compiled: [{0},{1}]",
708 CurrentBlock.StartLocation, CurrentBlock.EndLocation);
710 Console.WriteLine (e.GetType ().FullName + ": " + e.Message);
715 if (ReturnType != null && !unreachable){
717 if (CurrentAnonymousMethod != null){
718 Report.Error (1643, loc, "Not all code paths return a value in anonymous method of type `{0}'",
719 CurrentAnonymousMethod.Type);
721 Report.Error (161, loc, "Not all code paths return a value");
727 block.CompleteContexts ();
732 public void EmitResolvedTopBlock (ToplevelBlock block, bool unreachable)
738 ig.MarkLabel (ReturnLabel);
740 if (return_value != null){
741 ig.Emit (OpCodes.Ldloc, return_value);
742 ig.Emit (OpCodes.Ret);
745 // If `HasReturnLabel' is set, then we already emitted a
746 // jump to the end of the method, so we must emit a `ret'
749 // Unfortunately, System.Reflection.Emit automatically emits
750 // a leave to the end of a finally block. This is a problem
751 // if no code is following the try/finally block since we may
752 // jump to a point after the end of the method.
753 // As a workaround, we're always creating a return label in
757 if ((block != null) && block.IsDestructor) {
758 // Nothing to do; S.R.E automatically emits a leave.
759 } else if (HasReturnLabel || (!unreachable && !InIterator)) {
760 if (ReturnType != null)
761 ig.Emit (OpCodes.Ldloc, TemporaryReturn ());
762 ig.Emit (OpCodes.Ret);
767 // Close pending helper classes if we are the toplevel
769 if (capture_context != null && capture_context.ParentToplevel == null)
770 capture_context.CloseAnonymousHelperClasses ();
774 /// This is called immediately before emitting an IL opcode to tell the symbol
775 /// writer to which source line this opcode belongs.
777 public void Mark (Location loc, bool check_file)
779 if ((CodeGen.SymbolWriter == null) || Location.IsNull (loc))
782 if (check_file && (CurrentFile != loc.File))
785 CodeGen.SymbolWriter.MarkSequencePoint (ig, loc.Row, 0);
788 public void DefineLocalVariable (string name, LocalBuilder builder)
790 if (CodeGen.SymbolWriter == null)
793 CodeGen.SymbolWriter.DefineLocalVariable (name, builder);
797 /// Returns a temporary storage for a variable of type t as
798 /// a local variable in the current body.
800 public LocalBuilder GetTemporaryLocal (Type t)
802 LocalBuilder location = null;
804 if (temporary_storage != null){
805 object o = temporary_storage [t];
808 ArrayList al = (ArrayList) o;
810 for (int i = 0; i < al.Count; i++){
812 location = (LocalBuilder) al [i];
818 location = (LocalBuilder) o;
819 if (location != null)
824 return ig.DeclareLocal (t);
827 public void FreeTemporaryLocal (LocalBuilder b, Type t)
829 if (temporary_storage == null){
830 temporary_storage = new Hashtable ();
831 temporary_storage [t] = b;
834 object o = temporary_storage [t];
836 temporary_storage [t] = b;
840 ArrayList al = (ArrayList) o;
841 for (int i = 0; i < al.Count; i++){
850 ArrayList replacement = new ArrayList ();
852 temporary_storage.Remove (t);
853 temporary_storage [t] = replacement;
857 /// Current loop begin and end labels.
859 public Label LoopBegin, LoopEnd;
862 /// Default target in a switch statement. Only valid if
865 public Label DefaultTarget;
868 /// If this is non-null, points to the current switch statement
870 public Switch Switch;
873 /// ReturnValue creates on demand the LocalBuilder for the
874 /// return value from the function. By default this is not
875 /// used. This is only required when returns are found inside
876 /// Try or Catch statements.
878 /// This method is typically invoked from the Emit phase, so
879 /// we allow the creation of a return label if it was not
880 /// requested during the resolution phase. Could be cleaned
881 /// up, but it would replicate a lot of logic in the Emit phase
882 /// of the code that uses it.
884 public LocalBuilder TemporaryReturn ()
886 if (return_value == null){
887 return_value = ig.DeclareLocal (ReturnType);
888 if (!HasReturnLabel){
889 ReturnLabel = ig.DefineLabel ();
890 HasReturnLabel = true;
898 /// This method is used during the Resolution phase to flag the
899 /// need to define the ReturnLabel
901 public void NeedReturnLabel ()
903 if (current_phase != Phase.Resolving){
905 // The reason is that the `ReturnLabel' is declared between
906 // resolution and emission
908 throw new Exception ("NeedReturnLabel called from Emit phase, should only be called during Resolve");
911 if (!InIterator && !HasReturnLabel)
912 HasReturnLabel = true;
916 // Creates a field `name' with the type `t' on the proxy class
918 public FieldBuilder MapVariable (string name, Type t)
921 return CurrentIterator.MapVariable ("v_", name, t);
923 throw new Exception ("MapVariable for an unknown state");
926 public Expression RemapParameter (int idx)
928 FieldExpr fe = new FieldExprNoAddress (CurrentIterator.parameter_fields [idx].FieldBuilder, loc);
929 fe.InstanceExpression = new ProxyInstance ();
930 return fe.DoResolve (this);
933 public Expression RemapParameterLValue (int idx, Expression right_side)
935 FieldExpr fe = new FieldExprNoAddress (CurrentIterator.parameter_fields [idx].FieldBuilder, loc);
936 fe.InstanceExpression = new ProxyInstance ();
937 return fe.DoResolveLValue (this, right_side);
941 // Emits the proper object to address fields on a remapped
942 // variable/parameter to field in anonymous-method/iterator proxy classes.
944 public void EmitThis ()
946 ig.Emit (OpCodes.Ldarg_0);
949 FieldBuilder this_field = CurrentIterator.this_field.FieldBuilder;
950 if (TypeManager.IsValueType (this_field.FieldType))
951 ig.Emit (OpCodes.Ldflda, this_field);
953 ig.Emit (OpCodes.Ldfld, this_field);
955 } else if (capture_context != null && CurrentAnonymousMethod != null){
956 ScopeInfo si = CurrentAnonymousMethod.Scope;
958 if (si.ParentLink != null)
959 ig.Emit (OpCodes.Ldfld, si.ParentLink);
960 if (si.THIS != null){
961 ig.Emit (OpCodes.Ldfld, si.THIS);
970 // Emits the code necessary to load the instance required
971 // to access the captured LocalInfo
973 public void EmitCapturedVariableInstance (LocalInfo li)
976 ig.Emit (OpCodes.Ldarg_0);
980 if (capture_context == null)
981 throw new Exception ("Calling EmitCapturedContext when there is no capture_context");
983 capture_context.EmitCapturedVariableInstance (this, li, CurrentAnonymousMethod);
986 public void EmitParameter (string name)
988 capture_context.EmitParameter (this, name);
991 public void EmitAssignParameter (string name, Expression source, bool leave_copy, bool prepare_for_load)
993 capture_context.EmitAssignParameter (this, name, source, leave_copy, prepare_for_load);
996 public void EmitAddressOfParameter (string name)
998 capture_context.EmitAddressOfParameter (this, name);
1001 public Expression GetThis (Location loc)
1004 if (CurrentBlock != null)
1005 my_this = new This (CurrentBlock, loc);
1007 my_this = new This (loc);
1009 if (!my_this.ResolveBase (this))
1017 public abstract class CommonAssemblyModulClass: Attributable {
1018 protected CommonAssemblyModulClass ():
1023 public void AddAttributes (ArrayList attrs)
1025 if (OptAttributes == null) {
1026 OptAttributes = new Attributes (attrs);
1029 OptAttributes.AddAttributes (attrs);
1032 public virtual void Emit (TypeContainer tc)
1034 if (OptAttributes == null)
1037 EmitContext ec = new EmitContext (tc, Mono.CSharp.Location.Null, null, null, 0, false);
1038 OptAttributes.Emit (ec, this);
1041 protected Attribute GetClsCompliantAttribute ()
1043 if (OptAttributes == null)
1046 // Ensure that we only have GlobalAttributes, since the Search below isn't safe with other types.
1047 if (!OptAttributes.CheckTargets (this))
1050 EmitContext temp_ec = new EmitContext (RootContext.Tree.Types, Mono.CSharp.Location.Null, null, null, 0, false);
1051 Attribute a = OptAttributes.Search (TypeManager.cls_compliant_attribute_type, temp_ec);
1053 a.Resolve (temp_ec);
1059 public class AssemblyClass: CommonAssemblyModulClass {
1060 // TODO: make it private and move all builder based methods here
1061 public AssemblyBuilder Builder;
1063 bool is_cls_compliant;
1064 public Attribute ClsCompliantAttribute;
1066 ListDictionary declarative_security;
1068 static string[] attribute_targets = new string [] { "assembly" };
1070 public AssemblyClass (): base ()
1072 is_cls_compliant = false;
1075 public bool IsClsCompliant {
1077 return is_cls_compliant;
1081 public override AttributeTargets AttributeTargets {
1083 return AttributeTargets.Assembly;
1087 public override bool IsClsCompliaceRequired(DeclSpace ds)
1089 return is_cls_compliant;
1092 public void ResolveClsCompliance ()
1094 ClsCompliantAttribute = GetClsCompliantAttribute ();
1095 if (ClsCompliantAttribute == null)
1098 is_cls_compliant = ClsCompliantAttribute.GetClsCompliantAttributeValue (null);
1102 private void SetPublicKey (AssemblyName an, byte[] strongNameBlob)
1105 // check for possible ECMA key
1106 if (strongNameBlob.Length == 16) {
1107 // will be rejected if not "the" ECMA key
1108 an.SetPublicKey (strongNameBlob);
1111 // take it, with or without, a private key
1112 RSA rsa = CryptoConvert.FromCapiKeyBlob (strongNameBlob);
1113 // and make sure we only feed the public part to Sys.Ref
1114 byte[] publickey = CryptoConvert.ToCapiPublicKeyBlob (rsa);
1116 // AssemblyName.SetPublicKey requires an additional header
1117 byte[] publicKeyHeader = new byte [12] { 0x00, 0x24, 0x00, 0x00, 0x04, 0x80, 0x00, 0x00, 0x94, 0x00, 0x00, 0x00 };
1119 byte[] encodedPublicKey = new byte [12 + publickey.Length];
1120 Buffer.BlockCopy (publicKeyHeader, 0, encodedPublicKey, 0, 12);
1121 Buffer.BlockCopy (publickey, 0, encodedPublicKey, 12, publickey.Length);
1122 an.SetPublicKey (encodedPublicKey);
1126 Report.Error (1548, "Could not strongname the assembly. File `" +
1127 RootContext.StrongNameKeyFile + "' incorrectly encoded.");
1128 Environment.Exit (1);
1132 // TODO: rewrite this code (to kill N bugs and make it faster) and use standard ApplyAttribute way.
1133 public AssemblyName GetAssemblyName (string name, string output)
1135 if (OptAttributes != null) {
1136 foreach (Attribute a in OptAttributes.Attrs) {
1137 // cannot rely on any resolve-based members before you call Resolve
1138 if (a.ExplicitTarget == null || a.ExplicitTarget != "assembly")
1141 // TODO: This code is buggy: comparing Attribute name without resolving it is wrong.
1142 // However, this is invoked by CodeGen.Init, at which time none of the namespaces
1145 case "AssemblyKeyFile":
1146 case "AssemblyKeyFileAttribute":
1147 case "System.Reflection.AssemblyKeyFileAttribute":
1148 if (RootContext.StrongNameKeyFile != null) {
1149 Report.SymbolRelatedToPreviousError (a.Location, a.Name);
1150 Report.Warning (1616, "Compiler option '{0}' overrides '{1}' given in source", "keyfile", "System.Reflection.AssemblyKeyFileAttribute");
1153 string value = a.GetString ();
1154 if (value != String.Empty)
1155 RootContext.StrongNameKeyFile = value;
1158 case "AssemblyKeyName":
1159 case "AssemblyKeyNameAttribute":
1160 case "System.Reflection.AssemblyKeyNameAttribute":
1161 if (RootContext.StrongNameKeyContainer != null) {
1162 Report.SymbolRelatedToPreviousError (a.Location, a.Name);
1163 Report.Warning (1616, "keycontainer", "Compiler option '{0}' overrides '{1}' given in source", "System.Reflection.AssemblyKeyNameAttribute");
1166 string value = a.GetString ();
1167 if (value != String.Empty)
1168 RootContext.StrongNameKeyContainer = value;
1171 case "AssemblyDelaySign":
1172 case "AssemblyDelaySignAttribute":
1173 case "System.Reflection.AssemblyDelaySignAttribute":
1174 RootContext.StrongNameDelaySign = a.GetBoolean ();
1180 AssemblyName an = new AssemblyName ();
1181 an.Name = Path.GetFileNameWithoutExtension (name);
1183 // note: delay doesn't apply when using a key container
1184 if (RootContext.StrongNameKeyContainer != null) {
1185 an.KeyPair = new StrongNameKeyPair (RootContext.StrongNameKeyContainer);
1189 // strongname is optional
1190 if (RootContext.StrongNameKeyFile == null)
1193 string AssemblyDir = Path.GetDirectoryName (output);
1195 // the StrongName key file may be relative to (a) the compiled
1196 // file or (b) to the output assembly. See bugzilla #55320
1197 // http://bugzilla.ximian.com/show_bug.cgi?id=55320
1199 // (a) relative to the compiled file
1200 string filename = Path.GetFullPath (RootContext.StrongNameKeyFile);
1201 bool exist = File.Exists (filename);
1202 if ((!exist) && (AssemblyDir != null) && (AssemblyDir != String.Empty)) {
1203 // (b) relative to the outputed assembly
1204 filename = Path.GetFullPath (Path.Combine (AssemblyDir, RootContext.StrongNameKeyFile));
1205 exist = File.Exists (filename);
1209 using (FileStream fs = new FileStream (filename, FileMode.Open, FileAccess.Read)) {
1210 byte[] snkeypair = new byte [fs.Length];
1211 fs.Read (snkeypair, 0, snkeypair.Length);
1213 if (RootContext.StrongNameDelaySign) {
1214 // delayed signing - DO NOT include private key
1215 SetPublicKey (an, snkeypair);
1218 // no delay so we make sure we have the private key
1220 CryptoConvert.FromCapiPrivateKeyBlob (snkeypair);
1221 an.KeyPair = new StrongNameKeyPair (snkeypair);
1223 catch (CryptographicException) {
1224 if (snkeypair.Length == 16) {
1225 // error # is different for ECMA key
1226 Report.Error (1606, "Could not strongname the assembly. " +
1227 "ECMA key can only be used to delay-sign assemblies");
1230 Report.Error (1548, "Could not strongname the assembly. File `" +
1231 RootContext.StrongNameKeyFile +
1232 "' doesn't have a private key.");
1234 Environment.Exit (1);
1240 Report.Error (1548, "Could not strongname the assembly. File `" +
1241 RootContext.StrongNameKeyFile + "' not found.");
1242 Environment.Exit (1);
1247 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder customBuilder)
1249 if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (true)) {
1250 if (declarative_security == null)
1251 declarative_security = new ListDictionary ();
1253 a.ExtractSecurityPermissionSet (declarative_security);
1257 Builder.SetCustomAttribute (customBuilder);
1260 public override void Emit (TypeContainer tc)
1264 if (declarative_security != null) {
1266 MethodInfo add_permission = typeof (AssemblyBuilder).GetMethod ("AddPermissionRequests", BindingFlags.Instance | BindingFlags.NonPublic);
1267 object builder_instance = Builder;
1270 // Microsoft runtime hacking
1271 if (add_permission == null) {
1272 Type assembly_builder = typeof (AssemblyBuilder).Assembly.GetType ("System.Reflection.Emit.AssemblyBuilderData");
1273 add_permission = assembly_builder.GetMethod ("AddPermissionRequests", BindingFlags.Instance | BindingFlags.NonPublic);
1275 FieldInfo fi = typeof (AssemblyBuilder).GetField ("m_assemblyData", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.GetField);
1276 builder_instance = fi.GetValue (Builder);
1279 object[] args = new object [] { declarative_security [SecurityAction.RequestMinimum],
1280 declarative_security [SecurityAction.RequestOptional],
1281 declarative_security [SecurityAction.RequestRefuse] };
1282 add_permission.Invoke (builder_instance, args);
1285 Report.RuntimeMissingSupport (Location.Null, "assembly permission setting");
1290 public override string[] ValidAttributeTargets {
1292 return attribute_targets;
1297 public class ModuleClass: CommonAssemblyModulClass {
1298 // TODO: make it private and move all builder based methods here
1299 public ModuleBuilder Builder;
1300 bool m_module_is_unsafe;
1302 static string[] attribute_targets = new string [] { "module" };
1304 public ModuleClass (bool is_unsafe)
1306 m_module_is_unsafe = is_unsafe;
1309 public override AttributeTargets AttributeTargets {
1311 return AttributeTargets.Module;
1315 public override bool IsClsCompliaceRequired(DeclSpace ds)
1317 return CodeGen.Assembly.IsClsCompliant;
1320 public override void Emit (TypeContainer tc)
1324 if (!m_module_is_unsafe)
1327 if (TypeManager.unverifiable_code_ctor == null) {
1328 Console.WriteLine ("Internal error ! Cannot set unverifiable code attribute.");
1332 Builder.SetCustomAttribute (new CustomAttributeBuilder (TypeManager.unverifiable_code_ctor, new object [0]));
1335 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder customBuilder)
1337 if (a.Type == TypeManager.cls_compliant_attribute_type) {
1338 if (CodeGen.Assembly.ClsCompliantAttribute == null) {
1339 Report.Warning (3012, a.Location, "You must specify the CLSCompliant attribute on the assembly, not the module, to enable CLS compliance checking");
1341 else if (CodeGen.Assembly.IsClsCompliant != a.GetBoolean ()) {
1342 Report.SymbolRelatedToPreviousError (CodeGen.Assembly.ClsCompliantAttribute.Location, CodeGen.Assembly.ClsCompliantAttribute.Name);
1343 Report.Error (3017, a.Location, "You cannot specify the CLSCompliant attribute on a module that differs from the CLSCompliant attribute on the assembly");
1348 Builder.SetCustomAttribute (customBuilder);
1351 public override string[] ValidAttributeTargets {
1353 return attribute_targets;