vhdl-nodes: add Get/Set_Associated_Subprogram.

6 files changed, 520 insertions, 454 deletions

diff --git a/pyGHDL/libghdl/vhdl/nodes.py b/pyGHDL/libghdl/vhdl/nodes.py
index 40492a9e2..b9de81b8f 100644
--- a/pyGHDL/libghdl/vhdl/nodes.py
+++ b/pyGHDL/libghdl/vhdl/nodes.py
@@ -3421,6 +3421,19 @@ def Set_Default_Subprogram(obj: Iir, value: Iir) -> None:
 
 
 @export
+@BindToLibGHDL("vhdl__nodes__get_associated_subprogram")
+def Get_Associated_Subprogram(obj: Iir) -> Iir:
+    """"""
+    return 0
+
+
+@export
+@BindToLibGHDL("vhdl__nodes__set_associated_subprogram")
+def Set_Associated_Subprogram(obj: Iir, value: Iir) -> None:
+    """"""
+
+
+@export
 @BindToLibGHDL("vhdl__nodes__get_subprogram_specification")
 def Get_Subprogram_Specification(obj: Iir) -> Iir:
     """"""
diff --git a/pyGHDL/libghdl/vhdl/nodes_meta.py b/pyGHDL/libghdl/vhdl/nodes_meta.py
index 505c84fb7..a923ac764 100644
--- a/pyGHDL/libghdl/vhdl/nodes_meta.py
+++ b/pyGHDL/libghdl/vhdl/nodes_meta.py
@@ -228,277 +228,278 @@ class fields(IntEnum):
     Base_Name = 108
     Interface_Declaration_Chain = 109
     Default_Subprogram = 110
-    Subprogram_Specification = 111
-    Sequential_Statement_Chain = 112
-    Simultaneous_Statement_Chain = 113
-    Subprogram_Body = 114
-    Overload_Number = 115
-    Subprogram_Depth = 116
-    Subprogram_Hash = 117
-    Impure_Depth = 118
-    Return_Type = 119
-    Implicit_Definition = 120
-    Uninstantiated_Subprogram_Name = 121
-    Default_Value = 122
-    Deferred_Declaration = 123
-    Deferred_Declaration_Flag = 124
-    Shared_Flag = 125
-    Design_Unit = 126
-    Block_Statement = 127
-    Signal_Driver = 128
-    Declaration_Chain = 129
-    File_Logical_Name = 130
-    File_Open_Kind = 131
-    Element_Position = 132
-    Use_Clause_Chain = 133
-    Context_Reference_Chain = 134
-    Inherit_Spec_Chain = 135
-    Selected_Name = 136
-    Type_Declarator = 137
-    Complete_Type_Definition = 138
-    Incomplete_Type_Ref_Chain = 139
-    Associated_Type = 140
-    Enumeration_Literal_List = 141
-    Entity_Class_Entry_Chain = 142
-    Group_Constituent_List = 143
-    Unit_Chain = 144
-    Primary_Unit = 145
-    Identifier = 146
-    Label = 147
-    Return_Identifier = 148
-    Visible_Flag = 149
-    Range_Constraint = 150
-    Direction = 151
-    Left_Limit = 152
-    Right_Limit = 153
-    Left_Limit_Expr = 154
-    Right_Limit_Expr = 155
-    Parent_Type = 156
-    Simple_Nature = 157
-    Base_Nature = 158
-    Resolution_Indication = 159
-    Record_Element_Resolution_Chain = 160
-    Tolerance = 161
-    Plus_Terminal_Name = 162
-    Minus_Terminal_Name = 163
-    Plus_Terminal = 164
-    Minus_Terminal = 165
-    Magnitude_Expression = 166
-    Phase_Expression = 167
-    Power_Expression = 168
-    Simultaneous_Left = 169
-    Simultaneous_Right = 170
-    Text_File_Flag = 171
-    Only_Characters_Flag = 172
-    Is_Character_Type = 173
-    Nature_Staticness = 174
-    Type_Staticness = 175
-    Constraint_State = 176
-    Index_Subtype_List = 177
-    Index_Subtype_Definition_List = 178
-    Element_Subtype_Indication = 179
-    Element_Subtype = 180
-    Element_Subnature_Indication = 181
-    Element_Subnature = 182
-    Index_Constraint_List = 183
-    Array_Element_Constraint = 184
-    Has_Array_Constraint_Flag = 185
-    Has_Element_Constraint_Flag = 186
-    Elements_Declaration_List = 187
-    Owned_Elements_Chain = 188
-    Designated_Type = 189
-    Designated_Subtype_Indication = 190
-    Index_List = 191
-    Reference = 192
-    Nature_Declarator = 193
-    Across_Type_Mark = 194
-    Through_Type_Mark = 195
-    Across_Type_Definition = 196
-    Through_Type_Definition = 197
-    Across_Type = 198
-    Through_Type = 199
-    Target = 200
-    Waveform_Chain = 201
-    Guard = 202
-    Delay_Mechanism = 203
-    Reject_Time_Expression = 204
-    Force_Mode = 205
-    Has_Force_Mode = 206
-    Sensitivity_List = 207
-    Process_Origin = 208
-    Package_Origin = 209
-    Condition_Clause = 210
-    Break_Element = 211
-    Selector_Quantity = 212
-    Break_Quantity = 213
-    Timeout_Clause = 214
-    Postponed_Flag = 215
-    Callees_List = 216
-    Passive_Flag = 217
-    Resolution_Function_Flag = 218
-    Wait_State = 219
-    All_Sensitized_State = 220
-    Seen_Flag = 221
-    Pure_Flag = 222
-    Foreign_Flag = 223
-    Resolved_Flag = 224
-    Signal_Type_Flag = 225
-    Has_Signal_Flag = 226
-    Purity_State = 227
-    Elab_Flag = 228
-    Vendor_Library_Flag = 229
-    Configuration_Mark_Flag = 230
-    Configuration_Done_Flag = 231
-    Index_Constraint_Flag = 232
-    Hide_Implicit_Flag = 233
-    Assertion_Condition = 234
-    Report_Expression = 235
-    Severity_Expression = 236
-    Instantiated_Unit = 237
-    Generic_Map_Aspect_Chain = 238
-    Port_Map_Aspect_Chain = 239
-    Configuration_Name = 240
-    Component_Configuration = 241
-    Configuration_Specification = 242
-    Default_Binding_Indication = 243
-    Default_Configuration_Declaration = 244
-    Expression = 245
-    Conditional_Expression_Chain = 246
-    Allocator_Designated_Type = 247
-    Selected_Waveform_Chain = 248
-    Conditional_Waveform_Chain = 249
-    Guard_Expression = 250
-    Guard_Decl = 251
-    Guard_Sensitivity_List = 252
-    Attribute_Implicit_Chain = 253
-    Block_Block_Configuration = 254
-    Package_Header = 255
-    Block_Header = 256
-    Uninstantiated_Package_Name = 257
-    Uninstantiated_Package_Decl = 258
-    Instance_Source_File = 259
-    Generate_Block_Configuration = 260
-    Generate_Statement_Body = 261
-    Alternative_Label = 262
-    Generate_Else_Clause = 263
-    Condition = 264
-    Else_Clause = 265
-    Parameter_Specification = 266
-    Parent = 267
-    Loop_Label = 268
-    Exit_Flag = 269
-    Next_Flag = 270
-    Component_Name = 271
-    Instantiation_List = 272
-    Entity_Aspect = 273
-    Default_Entity_Aspect = 274
-    Binding_Indication = 275
-    Named_Entity = 276
-    Referenced_Name = 277
-    Expr_Staticness = 278
-    Scalar_Size = 279
-    Error_Origin = 280
-    Operand = 281
-    Left = 282
-    Right = 283
-    Unit_Name = 284
-    Name = 285
-    Group_Template_Name = 286
-    Name_Staticness = 287
-    Prefix = 288
-    Signature_Prefix = 289
-    External_Pathname = 290
-    Pathname_Suffix = 291
-    Pathname_Expression = 292
-    In_Formal_Flag = 293
-    Inertial_Flag = 294
-    Slice_Subtype = 295
-    Suffix = 296
-    Index_Subtype = 297
-    Parameter = 298
-    Parameter_2 = 299
-    Parameter_3 = 300
-    Parameter_4 = 301
-    Attr_Chain = 302
-    Attribute_Implicit_Declaration = 303
-    Actual_Type = 304
-    Actual_Type_Definition = 305
-    Association_Chain = 306
-    Individual_Association_Chain = 307
-    Subprogram_Association_Chain = 308
-    Aggregate_Info = 309
-    Sub_Aggregate_Info = 310
-    Aggr_Dynamic_Flag = 311
-    Aggr_Min_Length = 312
-    Aggr_Low_Limit = 313
-    Aggr_High_Limit = 314
-    Aggr_Others_Flag = 315
-    Aggr_Named_Flag = 316
-    Aggregate_Expand_Flag = 317
-    Determined_Aggregate_Flag = 318
-    Association_Choices_Chain = 319
-    Case_Statement_Alternative_Chain = 320
-    Matching_Flag = 321
-    Choice_Staticness = 322
-    Procedure_Call = 323
-    Implementation = 324
-    Parameter_Association_Chain = 325
-    Method_Object = 326
-    Subtype_Type_Mark = 327
-    Subnature_Nature_Mark = 328
-    Type_Conversion_Subtype = 329
-    Type_Mark = 330
-    File_Type_Mark = 331
-    Return_Type_Mark = 332
-    Has_Disconnect_Flag = 333
-    Has_Active_Flag = 334
-    Is_Within_Flag = 335
-    Type_Marks_List = 336
-    Implicit_Alias_Flag = 337
-    Alias_Signature = 338
-    Attribute_Signature = 339
-    Overload_List = 340
-    Simple_Name_Identifier = 341
-    Simple_Name_Subtype = 342
-    Protected_Type_Body = 343
-    Protected_Type_Declaration = 344
-    Use_Flag = 345
-    End_Has_Reserved_Id = 346
-    End_Has_Identifier = 347
-    End_Has_Postponed = 348
-    Has_Label = 349
-    Has_Begin = 350
-    Has_End = 351
-    Has_Is = 352
-    Has_Pure = 353
-    Has_Body = 354
-    Has_Parameter = 355
-    Has_Component = 356
-    Has_Identifier_List = 357
-    Has_Mode = 358
-    Has_Class = 359
-    Has_Delay_Mechanism = 360
-    Suspend_Flag = 361
-    Stop_Flag = 362
-    Is_Ref = 363
-    Is_Forward_Ref = 364
-    Psl_Property = 365
-    Psl_Sequence = 366
-    Psl_Declaration = 367
-    Psl_Expression = 368
-    Psl_Boolean = 369
-    PSL_Clock = 370
-    PSL_NFA = 371
-    PSL_Nbr_States = 372
-    PSL_Clock_Sensitivity = 373
-    PSL_EOS_Flag = 374
-    PSL_Abort_Flag = 375
-    Count_Expression = 376
-    Clock_Expression = 377
-    Default_Clock = 378
-    Foreign_Node = 379
-    Suspend_State_Index = 380
-    Suspend_State_Chain = 381
+    Associated_Subprogram = 111
+    Subprogram_Specification = 112
+    Sequential_Statement_Chain = 113
+    Simultaneous_Statement_Chain = 114
+    Subprogram_Body = 115
+    Overload_Number = 116
+    Subprogram_Depth = 117
+    Subprogram_Hash = 118
+    Impure_Depth = 119
+    Return_Type = 120
+    Implicit_Definition = 121
+    Uninstantiated_Subprogram_Name = 122
+    Default_Value = 123
+    Deferred_Declaration = 124
+    Deferred_Declaration_Flag = 125
+    Shared_Flag = 126
+    Design_Unit = 127
+    Block_Statement = 128
+    Signal_Driver = 129
+    Declaration_Chain = 130
+    File_Logical_Name = 131
+    File_Open_Kind = 132
+    Element_Position = 133
+    Use_Clause_Chain = 134
+    Context_Reference_Chain = 135
+    Inherit_Spec_Chain = 136
+    Selected_Name = 137
+    Type_Declarator = 138
+    Complete_Type_Definition = 139
+    Incomplete_Type_Ref_Chain = 140
+    Associated_Type = 141
+    Enumeration_Literal_List = 142
+    Entity_Class_Entry_Chain = 143
+    Group_Constituent_List = 144
+    Unit_Chain = 145
+    Primary_Unit = 146
+    Identifier = 147
+    Label = 148
+    Return_Identifier = 149
+    Visible_Flag = 150
+    Range_Constraint = 151
+    Direction = 152
+    Left_Limit = 153
+    Right_Limit = 154
+    Left_Limit_Expr = 155
+    Right_Limit_Expr = 156
+    Parent_Type = 157
+    Simple_Nature = 158
+    Base_Nature = 159
+    Resolution_Indication = 160
+    Record_Element_Resolution_Chain = 161
+    Tolerance = 162
+    Plus_Terminal_Name = 163
+    Minus_Terminal_Name = 164
+    Plus_Terminal = 165
+    Minus_Terminal = 166
+    Magnitude_Expression = 167
+    Phase_Expression = 168
+    Power_Expression = 169
+    Simultaneous_Left = 170
+    Simultaneous_Right = 171
+    Text_File_Flag = 172
+    Only_Characters_Flag = 173
+    Is_Character_Type = 174
+    Nature_Staticness = 175
+    Type_Staticness = 176
+    Constraint_State = 177
+    Index_Subtype_List = 178
+    Index_Subtype_Definition_List = 179
+    Element_Subtype_Indication = 180
+    Element_Subtype = 181
+    Element_Subnature_Indication = 182
+    Element_Subnature = 183
+    Index_Constraint_List = 184
+    Array_Element_Constraint = 185
+    Has_Array_Constraint_Flag = 186
+    Has_Element_Constraint_Flag = 187
+    Elements_Declaration_List = 188
+    Owned_Elements_Chain = 189
+    Designated_Type = 190
+    Designated_Subtype_Indication = 191
+    Index_List = 192
+    Reference = 193
+    Nature_Declarator = 194
+    Across_Type_Mark = 195
+    Through_Type_Mark = 196
+    Across_Type_Definition = 197
+    Through_Type_Definition = 198
+    Across_Type = 199
+    Through_Type = 200
+    Target = 201
+    Waveform_Chain = 202
+    Guard = 203
+    Delay_Mechanism = 204
+    Reject_Time_Expression = 205
+    Force_Mode = 206
+    Has_Force_Mode = 207
+    Sensitivity_List = 208
+    Process_Origin = 209
+    Package_Origin = 210
+    Condition_Clause = 211
+    Break_Element = 212
+    Selector_Quantity = 213
+    Break_Quantity = 214
+    Timeout_Clause = 215
+    Postponed_Flag = 216
+    Callees_List = 217
+    Passive_Flag = 218
+    Resolution_Function_Flag = 219
+    Wait_State = 220
+    All_Sensitized_State = 221
+    Seen_Flag = 222
+    Pure_Flag = 223
+    Foreign_Flag = 224
+    Resolved_Flag = 225
+    Signal_Type_Flag = 226
+    Has_Signal_Flag = 227
+    Purity_State = 228
+    Elab_Flag = 229
+    Vendor_Library_Flag = 230
+    Configuration_Mark_Flag = 231
+    Configuration_Done_Flag = 232
+    Index_Constraint_Flag = 233
+    Hide_Implicit_Flag = 234
+    Assertion_Condition = 235
+    Report_Expression = 236
+    Severity_Expression = 237
+    Instantiated_Unit = 238
+    Generic_Map_Aspect_Chain = 239
+    Port_Map_Aspect_Chain = 240
+    Configuration_Name = 241
+    Component_Configuration = 242
+    Configuration_Specification = 243
+    Default_Binding_Indication = 244
+    Default_Configuration_Declaration = 245
+    Expression = 246
+    Conditional_Expression_Chain = 247
+    Allocator_Designated_Type = 248
+    Selected_Waveform_Chain = 249
+    Conditional_Waveform_Chain = 250
+    Guard_Expression = 251
+    Guard_Decl = 252
+    Guard_Sensitivity_List = 253
+    Attribute_Implicit_Chain = 254
+    Block_Block_Configuration = 255
+    Package_Header = 256
+    Block_Header = 257
+    Uninstantiated_Package_Name = 258
+    Uninstantiated_Package_Decl = 259
+    Instance_Source_File = 260
+    Generate_Block_Configuration = 261
+    Generate_Statement_Body = 262
+    Alternative_Label = 263
+    Generate_Else_Clause = 264
+    Condition = 265
+    Else_Clause = 266
+    Parameter_Specification = 267
+    Parent = 268
+    Loop_Label = 269
+    Exit_Flag = 270
+    Next_Flag = 271
+    Component_Name = 272
+    Instantiation_List = 273
+    Entity_Aspect = 274
+    Default_Entity_Aspect = 275
+    Binding_Indication = 276
+    Named_Entity = 277
+    Referenced_Name = 278
+    Expr_Staticness = 279
+    Scalar_Size = 280
+    Error_Origin = 281
+    Operand = 282
+    Left = 283
+    Right = 284
+    Unit_Name = 285
+    Name = 286
+    Group_Template_Name = 287
+    Name_Staticness = 288
+    Prefix = 289
+    Signature_Prefix = 290
+    External_Pathname = 291
+    Pathname_Suffix = 292
+    Pathname_Expression = 293
+    In_Formal_Flag = 294
+    Inertial_Flag = 295
+    Slice_Subtype = 296
+    Suffix = 297
+    Index_Subtype = 298
+    Parameter = 299
+    Parameter_2 = 300
+    Parameter_3 = 301
+    Parameter_4 = 302
+    Attr_Chain = 303
+    Attribute_Implicit_Declaration = 304
+    Actual_Type = 305
+    Actual_Type_Definition = 306
+    Association_Chain = 307
+    Individual_Association_Chain = 308
+    Subprogram_Association_Chain = 309
+    Aggregate_Info = 310
+    Sub_Aggregate_Info = 311
+    Aggr_Dynamic_Flag = 312
+    Aggr_Min_Length = 313
+    Aggr_Low_Limit = 314
+    Aggr_High_Limit = 315
+    Aggr_Others_Flag = 316
+    Aggr_Named_Flag = 317
+    Aggregate_Expand_Flag = 318
+    Determined_Aggregate_Flag = 319
+    Association_Choices_Chain = 320
+    Case_Statement_Alternative_Chain = 321
+    Matching_Flag = 322
+    Choice_Staticness = 323
+    Procedure_Call = 324
+    Implementation = 325
+    Parameter_Association_Chain = 326
+    Method_Object = 327
+    Subtype_Type_Mark = 328
+    Subnature_Nature_Mark = 329
+    Type_Conversion_Subtype = 330
+    Type_Mark = 331
+    File_Type_Mark = 332
+    Return_Type_Mark = 333
+    Has_Disconnect_Flag = 334
+    Has_Active_Flag = 335
+    Is_Within_Flag = 336
+    Type_Marks_List = 337
+    Implicit_Alias_Flag = 338
+    Alias_Signature = 339
+    Attribute_Signature = 340
+    Overload_List = 341
+    Simple_Name_Identifier = 342
+    Simple_Name_Subtype = 343
+    Protected_Type_Body = 344
+    Protected_Type_Declaration = 345
+    Use_Flag = 346
+    End_Has_Reserved_Id = 347
+    End_Has_Identifier = 348
+    End_Has_Postponed = 349
+    Has_Label = 350
+    Has_Begin = 351
+    Has_End = 352
+    Has_Is = 353
+    Has_Pure = 354
+    Has_Body = 355
+    Has_Parameter = 356
+    Has_Component = 357
+    Has_Identifier_List = 358
+    Has_Mode = 359
+    Has_Class = 360
+    Has_Delay_Mechanism = 361
+    Suspend_Flag = 362
+    Stop_Flag = 363
+    Is_Ref = 364
+    Is_Forward_Ref = 365
+    Psl_Property = 366
+    Psl_Sequence = 367
+    Psl_Declaration = 368
+    Psl_Expression = 369
+    Psl_Boolean = 370
+    PSL_Clock = 371
+    PSL_NFA = 372
+    PSL_Nbr_States = 373
+    PSL_Clock_Sensitivity = 374
+    PSL_EOS_Flag = 375
+    PSL_Abort_Flag = 376
+    Count_Expression = 377
+    Clock_Expression = 378
+    Default_Clock = 379
+    Foreign_Node = 380
+    Suspend_State_Index = 381
+    Suspend_State_Chain = 382
 
 
 def Get_Boolean(node, field):
@@ -1300,6 +1301,12 @@ def Has_Default_Subprogram(kind: IirKind) -> bool:
 
 
 @export
+@BindToLibGHDL("vhdl__nodes_meta__has_associated_subprogram")
+def Has_Associated_Subprogram(kind: IirKind) -> bool:
+    """"""
+
+
+@export
 @BindToLibGHDL("vhdl__nodes_meta__has_subprogram_specification")
 def Has_Subprogram_Specification(kind: IirKind) -> bool:
     """"""
diff --git a/src/vhdl/vhdl-nodes.adb b/src/vhdl/vhdl-nodes.adb
index 5fac95d66..07ed95bfd 100644
--- a/src/vhdl/vhdl-nodes.adb
+++ b/src/vhdl/vhdl-nodes.adb
@@ -3182,6 +3182,22 @@ package body Vhdl.Nodes is
       Set_Field9 (Inter, Subprg);
    end Set_Default_Subprogram;
 
+   function Get_Associated_Subprogram (Inter : Iir) return Iir is
+   begin
+      pragma Assert (Inter /= Null_Iir);
+      pragma Assert (Has_Associated_Subprogram (Get_Kind (Inter)),
+                     "no field Associated_Subprogram");
+      return Get_Field6 (Inter);
+   end Get_Associated_Subprogram;
+
+   procedure Set_Associated_Subprogram (Inter : Iir; Subprg : Iir) is
+   begin
+      pragma Assert (Inter /= Null_Iir);
+      pragma Assert (Has_Associated_Subprogram (Get_Kind (Inter)),
+                     "no field Associated_Subprogram");
+      Set_Field6 (Inter, Subprg);
+   end Set_Associated_Subprogram;
+
    function Get_Subprogram_Specification (Target : Iir) return Iir is
    begin
       pragma Assert (Target /= Null_Iir);
diff --git a/src/vhdl/vhdl-nodes.ads b/src/vhdl/vhdl-nodes.ads
index a82fc46c1..529790b9a 100644
--- a/src/vhdl/vhdl-nodes.ads
+++ b/src/vhdl/vhdl-nodes.ads
@@ -1782,6 +1782,8 @@ package Vhdl.Nodes is
    --
    --   Get/Set_Subprogram_Depth (Field10)
    --
+   --   Get/Set_Associated_Subprogram (Field6)
+   --
    --   Get/Set_Seen_Flag (Flag1)
    --
    -- Only for Iir_Kind_Interface_Function_Declaration:
@@ -8262,6 +8264,10 @@ package Vhdl.Nodes is
    procedure Set_Default_Subprogram (Inter : Iir; Subprg : Iir);
 
    --  Field: Field6 Ref
+   function Get_Associated_Subprogram (Inter : Iir) return Iir;
+   procedure Set_Associated_Subprogram (Inter : Iir; Subprg : Iir);
+
+   --  Field: Field6 Ref
    function Get_Subprogram_Specification (Target : Iir) return Iir;
    procedure Set_Subprogram_Specification (Target : Iir; Spec : Iir);
 
diff --git a/src/vhdl/vhdl-nodes_meta.adb b/src/vhdl/vhdl-nodes_meta.adb
index 20ed0a51f..526b6554b 100644
--- a/src/vhdl/vhdl-nodes_meta.adb
+++ b/src/vhdl/vhdl-nodes_meta.adb
@@ -128,6 +128,7 @@ package body Vhdl.Nodes_Meta is
       Field_Base_Name => Type_Iir,
       Field_Interface_Declaration_Chain => Type_Iir,
       Field_Default_Subprogram => Type_Iir,
+      Field_Associated_Subprogram => Type_Iir,
       Field_Subprogram_Specification => Type_Iir,
       Field_Sequential_Statement_Chain => Type_Iir,
       Field_Simultaneous_Statement_Chain => Type_Iir,
@@ -631,6 +632,8 @@ package body Vhdl.Nodes_Meta is
             return "interface_declaration_chain";
          when Field_Default_Subprogram =>
             return "default_subprogram";
+         when Field_Associated_Subprogram =>
+            return "associated_subprogram";
          when Field_Subprogram_Specification =>
             return "subprogram_specification";
          when Field_Sequential_Statement_Chain =>
@@ -2055,6 +2058,8 @@ package body Vhdl.Nodes_Meta is
             return Attr_Chain;
          when Field_Default_Subprogram =>
             return Attr_None;
+         when Field_Associated_Subprogram =>
+            return Attr_Ref;
          when Field_Subprogram_Specification =>
             return Attr_Ref;
          when Field_Sequential_Statement_Chain =>
@@ -3979,6 +3984,7 @@ package body Vhdl.Nodes_Meta is
       Field_Interface_Declaration_Chain,
       Field_Return_Type_Mark,
       Field_Default_Subprogram,
+      Field_Associated_Subprogram,
       --  Iir_Kind_Interface_Procedure_Declaration
       Field_Subprogram_Depth,
       Field_Identifier,
@@ -3995,6 +4001,7 @@ package body Vhdl.Nodes_Meta is
       Field_Interface_Declaration_Chain,
       Field_Return_Type_Mark,
       Field_Default_Subprogram,
+      Field_Associated_Subprogram,
       --  Iir_Kind_Attribute_Implicit_Declaration
       Field_Parent,
       Field_Chain,
@@ -5493,189 +5500,189 @@ package body Vhdl.Nodes_Meta is
       Iir_Kind_Interface_Terminal_Declaration => 1190,
       Iir_Kind_Interface_Type_Declaration => 1202,
       Iir_Kind_Interface_Package_Declaration => 1215,
-      Iir_Kind_Interface_Function_Declaration => 1234,
-      Iir_Kind_Interface_Procedure_Declaration => 1249,
-      Iir_Kind_Attribute_Implicit_Declaration => 1252,
-      Iir_Kind_Suspend_State_Declaration => 1255,
-      Iir_Kind_Identity_Operator => 1259,
-      Iir_Kind_Negation_Operator => 1263,
-      Iir_Kind_Absolute_Operator => 1267,
-      Iir_Kind_Not_Operator => 1271,
-      Iir_Kind_Implicit_Condition_Operator => 1275,
-      Iir_Kind_Condition_Operator => 1279,
-      Iir_Kind_Reduction_And_Operator => 1283,
-      Iir_Kind_Reduction_Or_Operator => 1287,
-      Iir_Kind_Reduction_Nand_Operator => 1291,
-      Iir_Kind_Reduction_Nor_Operator => 1295,
-      Iir_Kind_Reduction_Xor_Operator => 1299,
-      Iir_Kind_Reduction_Xnor_Operator => 1303,
-      Iir_Kind_And_Operator => 1308,
-      Iir_Kind_Or_Operator => 1313,
-      Iir_Kind_Nand_Operator => 1318,
-      Iir_Kind_Nor_Operator => 1323,
-      Iir_Kind_Xor_Operator => 1328,
-      Iir_Kind_Xnor_Operator => 1333,
-      Iir_Kind_Equality_Operator => 1338,
-      Iir_Kind_Inequality_Operator => 1343,
-      Iir_Kind_Less_Than_Operator => 1348,
-      Iir_Kind_Less_Than_Or_Equal_Operator => 1353,
-      Iir_Kind_Greater_Than_Operator => 1358,
-      Iir_Kind_Greater_Than_Or_Equal_Operator => 1363,
-      Iir_Kind_Match_Equality_Operator => 1368,
-      Iir_Kind_Match_Inequality_Operator => 1373,
-      Iir_Kind_Match_Less_Than_Operator => 1378,
-      Iir_Kind_Match_Less_Than_Or_Equal_Operator => 1383,
-      Iir_Kind_Match_Greater_Than_Operator => 1388,
-      Iir_Kind_Match_Greater_Than_Or_Equal_Operator => 1393,
-      Iir_Kind_Sll_Operator => 1398,
-      Iir_Kind_Sla_Operator => 1403,
-      Iir_Kind_Srl_Operator => 1408,
-      Iir_Kind_Sra_Operator => 1413,
-      Iir_Kind_Rol_Operator => 1418,
-      Iir_Kind_Ror_Operator => 1423,
-      Iir_Kind_Addition_Operator => 1428,
-      Iir_Kind_Substraction_Operator => 1433,
-      Iir_Kind_Concatenation_Operator => 1438,
-      Iir_Kind_Multiplication_Operator => 1443,
-      Iir_Kind_Division_Operator => 1448,
-      Iir_Kind_Modulus_Operator => 1453,
-      Iir_Kind_Remainder_Operator => 1458,
-      Iir_Kind_Exponentiation_Operator => 1463,
-      Iir_Kind_Function_Call => 1471,
-      Iir_Kind_Aggregate => 1479,
-      Iir_Kind_Parenthesis_Expression => 1482,
-      Iir_Kind_Qualified_Expression => 1486,
-      Iir_Kind_Type_Conversion => 1491,
-      Iir_Kind_Allocator_By_Expression => 1496,
-      Iir_Kind_Allocator_By_Subtype => 1502,
-      Iir_Kind_Selected_Element => 1510,
-      Iir_Kind_Dereference => 1515,
-      Iir_Kind_Implicit_Dereference => 1520,
-      Iir_Kind_Slice_Name => 1527,
-      Iir_Kind_Indexed_Name => 1533,
-      Iir_Kind_Psl_Prev => 1539,
-      Iir_Kind_Psl_Stable => 1544,
-      Iir_Kind_Psl_Rose => 1549,
-      Iir_Kind_Psl_Fell => 1554,
-      Iir_Kind_Psl_Onehot => 1557,
-      Iir_Kind_Psl_Onehot0 => 1560,
-      Iir_Kind_Psl_Expression => 1562,
-      Iir_Kind_Sensitized_Process_Statement => 1584,
-      Iir_Kind_Process_Statement => 1605,
-      Iir_Kind_Concurrent_Simple_Signal_Assignment => 1618,
-      Iir_Kind_Concurrent_Conditional_Signal_Assignment => 1631,
-      Iir_Kind_Concurrent_Selected_Signal_Assignment => 1645,
-      Iir_Kind_Concurrent_Assertion_Statement => 1653,
-      Iir_Kind_Concurrent_Procedure_Call_Statement => 1660,
-      Iir_Kind_Concurrent_Break_Statement => 1668,
-      Iir_Kind_Psl_Assert_Directive => 1682,
-      Iir_Kind_Psl_Assume_Directive => 1694,
-      Iir_Kind_Psl_Cover_Directive => 1706,
-      Iir_Kind_Psl_Restrict_Directive => 1717,
-      Iir_Kind_Block_Statement => 1731,
-      Iir_Kind_If_Generate_Statement => 1742,
-      Iir_Kind_Case_Generate_Statement => 1751,
-      Iir_Kind_For_Generate_Statement => 1760,
-      Iir_Kind_Component_Instantiation_Statement => 1771,
-      Iir_Kind_Psl_Default_Clock => 1774,
-      Iir_Kind_Generate_Statement_Body => 1785,
-      Iir_Kind_If_Generate_Else_Clause => 1791,
-      Iir_Kind_Simple_Simultaneous_Statement => 1798,
-      Iir_Kind_Simultaneous_Null_Statement => 1802,
-      Iir_Kind_Simultaneous_Procedural_Statement => 1813,
-      Iir_Kind_Simultaneous_Case_Statement => 1822,
-      Iir_Kind_Simultaneous_If_Statement => 1831,
-      Iir_Kind_Simultaneous_Elsif => 1837,
-      Iir_Kind_Simple_Signal_Assignment_Statement => 1848,
-      Iir_Kind_Conditional_Signal_Assignment_Statement => 1859,
-      Iir_Kind_Selected_Waveform_Assignment_Statement => 1871,
-      Iir_Kind_Signal_Force_Assignment_Statement => 1881,
-      Iir_Kind_Signal_Release_Assignment_Statement => 1890,
-      Iir_Kind_Null_Statement => 1894,
-      Iir_Kind_Assertion_Statement => 1901,
-      Iir_Kind_Report_Statement => 1907,
-      Iir_Kind_Wait_Statement => 1915,
-      Iir_Kind_Variable_Assignment_Statement => 1922,
-      Iir_Kind_Conditional_Variable_Assignment_Statement => 1929,
-      Iir_Kind_Return_Statement => 1935,
-      Iir_Kind_For_Loop_Statement => 1946,
-      Iir_Kind_While_Loop_Statement => 1957,
-      Iir_Kind_Next_Statement => 1964,
-      Iir_Kind_Exit_Statement => 1971,
-      Iir_Kind_Case_Statement => 1980,
-      Iir_Kind_Procedure_Call_Statement => 1986,
-      Iir_Kind_Break_Statement => 1993,
-      Iir_Kind_If_Statement => 2003,
-      Iir_Kind_Suspend_State_Statement => 2007,
-      Iir_Kind_Elsif => 2013,
-      Iir_Kind_Character_Literal => 2020,
-      Iir_Kind_Simple_Name => 2027,
-      Iir_Kind_Selected_Name => 2035,
-      Iir_Kind_Operator_Symbol => 2040,
-      Iir_Kind_Reference_Name => 2045,
-      Iir_Kind_External_Constant_Name => 2054,
-      Iir_Kind_External_Signal_Name => 2064,
-      Iir_Kind_External_Variable_Name => 2074,
-      Iir_Kind_Selected_By_All_Name => 2080,
-      Iir_Kind_Parenthesis_Name => 2085,
-      Iir_Kind_Package_Pathname => 2089,
-      Iir_Kind_Absolute_Pathname => 2090,
-      Iir_Kind_Relative_Pathname => 2091,
-      Iir_Kind_Pathname_Element => 2096,
-      Iir_Kind_Base_Attribute => 2098,
-      Iir_Kind_Subtype_Attribute => 2103,
-      Iir_Kind_Element_Attribute => 2108,
-      Iir_Kind_Across_Attribute => 2113,
-      Iir_Kind_Through_Attribute => 2118,
-      Iir_Kind_Nature_Reference_Attribute => 2122,
-      Iir_Kind_Left_Type_Attribute => 2127,
-      Iir_Kind_Right_Type_Attribute => 2132,
-      Iir_Kind_High_Type_Attribute => 2137,
-      Iir_Kind_Low_Type_Attribute => 2142,
-      Iir_Kind_Ascending_Type_Attribute => 2147,
-      Iir_Kind_Image_Attribute => 2153,
-      Iir_Kind_Value_Attribute => 2159,
-      Iir_Kind_Pos_Attribute => 2165,
-      Iir_Kind_Val_Attribute => 2171,
-      Iir_Kind_Succ_Attribute => 2177,
-      Iir_Kind_Pred_Attribute => 2183,
-      Iir_Kind_Leftof_Attribute => 2189,
-      Iir_Kind_Rightof_Attribute => 2195,
-      Iir_Kind_Signal_Slew_Attribute => 2203,
-      Iir_Kind_Quantity_Slew_Attribute => 2211,
-      Iir_Kind_Ramp_Attribute => 2219,
-      Iir_Kind_Zoh_Attribute => 2227,
-      Iir_Kind_Ltf_Attribute => 2235,
-      Iir_Kind_Ztf_Attribute => 2245,
-      Iir_Kind_Dot_Attribute => 2252,
-      Iir_Kind_Integ_Attribute => 2259,
-      Iir_Kind_Quantity_Delayed_Attribute => 2267,
-      Iir_Kind_Above_Attribute => 2275,
-      Iir_Kind_Delayed_Attribute => 2284,
-      Iir_Kind_Stable_Attribute => 2293,
-      Iir_Kind_Quiet_Attribute => 2302,
-      Iir_Kind_Transaction_Attribute => 2311,
-      Iir_Kind_Event_Attribute => 2315,
-      Iir_Kind_Active_Attribute => 2319,
-      Iir_Kind_Last_Event_Attribute => 2323,
-      Iir_Kind_Last_Active_Attribute => 2327,
-      Iir_Kind_Last_Value_Attribute => 2331,
-      Iir_Kind_Driving_Attribute => 2335,
-      Iir_Kind_Driving_Value_Attribute => 2339,
-      Iir_Kind_Behavior_Attribute => 2339,
-      Iir_Kind_Structure_Attribute => 2339,
-      Iir_Kind_Simple_Name_Attribute => 2346,
-      Iir_Kind_Instance_Name_Attribute => 2351,
-      Iir_Kind_Path_Name_Attribute => 2356,
-      Iir_Kind_Left_Array_Attribute => 2363,
-      Iir_Kind_Right_Array_Attribute => 2370,
-      Iir_Kind_High_Array_Attribute => 2377,
-      Iir_Kind_Low_Array_Attribute => 2384,
-      Iir_Kind_Length_Array_Attribute => 2391,
-      Iir_Kind_Ascending_Array_Attribute => 2398,
-      Iir_Kind_Range_Array_Attribute => 2405,
-      Iir_Kind_Reverse_Range_Array_Attribute => 2412,
-      Iir_Kind_Attribute_Name => 2421
+      Iir_Kind_Interface_Function_Declaration => 1235,
+      Iir_Kind_Interface_Procedure_Declaration => 1251,
+      Iir_Kind_Attribute_Implicit_Declaration => 1254,
+      Iir_Kind_Suspend_State_Declaration => 1257,
+      Iir_Kind_Identity_Operator => 1261,
+      Iir_Kind_Negation_Operator => 1265,
+      Iir_Kind_Absolute_Operator => 1269,
+      Iir_Kind_Not_Operator => 1273,
+      Iir_Kind_Implicit_Condition_Operator => 1277,
+      Iir_Kind_Condition_Operator => 1281,
+      Iir_Kind_Reduction_And_Operator => 1285,
+      Iir_Kind_Reduction_Or_Operator => 1289,
+      Iir_Kind_Reduction_Nand_Operator => 1293,
+      Iir_Kind_Reduction_Nor_Operator => 1297,
+      Iir_Kind_Reduction_Xor_Operator => 1301,
+      Iir_Kind_Reduction_Xnor_Operator => 1305,
+      Iir_Kind_And_Operator => 1310,
+      Iir_Kind_Or_Operator => 1315,
+      Iir_Kind_Nand_Operator => 1320,
+      Iir_Kind_Nor_Operator => 1325,
+      Iir_Kind_Xor_Operator => 1330,
+      Iir_Kind_Xnor_Operator => 1335,
+      Iir_Kind_Equality_Operator => 1340,
+      Iir_Kind_Inequality_Operator => 1345,
+      Iir_Kind_Less_Than_Operator => 1350,
+      Iir_Kind_Less_Than_Or_Equal_Operator => 1355,
+      Iir_Kind_Greater_Than_Operator => 1360,
+      Iir_Kind_Greater_Than_Or_Equal_Operator => 1365,
+      Iir_Kind_Match_Equality_Operator => 1370,
+      Iir_Kind_Match_Inequality_Operator => 1375,
+      Iir_Kind_Match_Less_Than_Operator => 1380,
+      Iir_Kind_Match_Less_Than_Or_Equal_Operator => 1385,
+      Iir_Kind_Match_Greater_Than_Operator => 1390,
+      Iir_Kind_Match_Greater_Than_Or_Equal_Operator => 1395,
+      Iir_Kind_Sll_Operator => 1400,
+      Iir_Kind_Sla_Operator => 1405,
+      Iir_Kind_Srl_Operator => 1410,
+      Iir_Kind_Sra_Operator => 1415,
+      Iir_Kind_Rol_Operator => 1420,
+      Iir_Kind_Ror_Operator => 1425,
+      Iir_Kind_Addition_Operator => 1430,
+      Iir_Kind_Substraction_Operator => 1435,
+      Iir_Kind_Concatenation_Operator => 1440,
+      Iir_Kind_Multiplication_Operator => 1445,
+      Iir_Kind_Division_Operator => 1450,
+      Iir_Kind_Modulus_Operator => 1455,
+      Iir_Kind_Remainder_Operator => 1460,
+      Iir_Kind_Exponentiation_Operator => 1465,
+      Iir_Kind_Function_Call => 1473,
+      Iir_Kind_Aggregate => 1481,
+      Iir_Kind_Parenthesis_Expression => 1484,
+      Iir_Kind_Qualified_Expression => 1488,
+      Iir_Kind_Type_Conversion => 1493,
+      Iir_Kind_Allocator_By_Expression => 1498,
+      Iir_Kind_Allocator_By_Subtype => 1504,
+      Iir_Kind_Selected_Element => 1512,
+      Iir_Kind_Dereference => 1517,
+      Iir_Kind_Implicit_Dereference => 1522,
+      Iir_Kind_Slice_Name => 1529,
+      Iir_Kind_Indexed_Name => 1535,
+      Iir_Kind_Psl_Prev => 1541,
+      Iir_Kind_Psl_Stable => 1546,
+      Iir_Kind_Psl_Rose => 1551,
+      Iir_Kind_Psl_Fell => 1556,
+      Iir_Kind_Psl_Onehot => 1559,
+      Iir_Kind_Psl_Onehot0 => 1562,
+      Iir_Kind_Psl_Expression => 1564,
+      Iir_Kind_Sensitized_Process_Statement => 1586,
+      Iir_Kind_Process_Statement => 1607,
+      Iir_Kind_Concurrent_Simple_Signal_Assignment => 1620,
+      Iir_Kind_Concurrent_Conditional_Signal_Assignment => 1633,
+      Iir_Kind_Concurrent_Selected_Signal_Assignment => 1647,
+      Iir_Kind_Concurrent_Assertion_Statement => 1655,
+      Iir_Kind_Concurrent_Procedure_Call_Statement => 1662,
+      Iir_Kind_Concurrent_Break_Statement => 1670,
+      Iir_Kind_Psl_Assert_Directive => 1684,
+      Iir_Kind_Psl_Assume_Directive => 1696,
+      Iir_Kind_Psl_Cover_Directive => 1708,
+      Iir_Kind_Psl_Restrict_Directive => 1719,
+      Iir_Kind_Block_Statement => 1733,
+      Iir_Kind_If_Generate_Statement => 1744,
+      Iir_Kind_Case_Generate_Statement => 1753,
+      Iir_Kind_For_Generate_Statement => 1762,
+      Iir_Kind_Component_Instantiation_Statement => 1773,
+      Iir_Kind_Psl_Default_Clock => 1776,
+      Iir_Kind_Generate_Statement_Body => 1787,
+      Iir_Kind_If_Generate_Else_Clause => 1793,
+      Iir_Kind_Simple_Simultaneous_Statement => 1800,
+      Iir_Kind_Simultaneous_Null_Statement => 1804,
+      Iir_Kind_Simultaneous_Procedural_Statement => 1815,
+      Iir_Kind_Simultaneous_Case_Statement => 1824,
+      Iir_Kind_Simultaneous_If_Statement => 1833,
+      Iir_Kind_Simultaneous_Elsif => 1839,
+      Iir_Kind_Simple_Signal_Assignment_Statement => 1850,
+      Iir_Kind_Conditional_Signal_Assignment_Statement => 1861,
+      Iir_Kind_Selected_Waveform_Assignment_Statement => 1873,
+      Iir_Kind_Signal_Force_Assignment_Statement => 1883,
+      Iir_Kind_Signal_Release_Assignment_Statement => 1892,
+      Iir_Kind_Null_Statement => 1896,
+      Iir_Kind_Assertion_Statement => 1903,
+      Iir_Kind_Report_Statement => 1909,
+      Iir_Kind_Wait_Statement => 1917,
+      Iir_Kind_Variable_Assignment_Statement => 1924,
+      Iir_Kind_Conditional_Variable_Assignment_Statement => 1931,
+      Iir_Kind_Return_Statement => 1937,
+      Iir_Kind_For_Loop_Statement => 1948,
+      Iir_Kind_While_Loop_Statement => 1959,
+      Iir_Kind_Next_Statement => 1966,
+      Iir_Kind_Exit_Statement => 1973,
+      Iir_Kind_Case_Statement => 1982,
+      Iir_Kind_Procedure_Call_Statement => 1988,
+      Iir_Kind_Break_Statement => 1995,
+      Iir_Kind_If_Statement => 2005,
+      Iir_Kind_Suspend_State_Statement => 2009,
+      Iir_Kind_Elsif => 2015,
+      Iir_Kind_Character_Literal => 2022,
+      Iir_Kind_Simple_Name => 2029,
+      Iir_Kind_Selected_Name => 2037,
+      Iir_Kind_Operator_Symbol => 2042,
+      Iir_Kind_Reference_Name => 2047,
+      Iir_Kind_External_Constant_Name => 2056,
+      Iir_Kind_External_Signal_Name => 2066,
+      Iir_Kind_External_Variable_Name => 2076,
+      Iir_Kind_Selected_By_All_Name => 2082,
+      Iir_Kind_Parenthesis_Name => 2087,
+      Iir_Kind_Package_Pathname => 2091,
+      Iir_Kind_Absolute_Pathname => 2092,
+      Iir_Kind_Relative_Pathname => 2093,
+      Iir_Kind_Pathname_Element => 2098,
+      Iir_Kind_Base_Attribute => 2100,
+      Iir_Kind_Subtype_Attribute => 2105,
+      Iir_Kind_Element_Attribute => 2110,
+      Iir_Kind_Across_Attribute => 2115,
+      Iir_Kind_Through_Attribute => 2120,
+      Iir_Kind_Nature_Reference_Attribute => 2124,
+      Iir_Kind_Left_Type_Attribute => 2129,
+      Iir_Kind_Right_Type_Attribute => 2134,
+      Iir_Kind_High_Type_Attribute => 2139,
+      Iir_Kind_Low_Type_Attribute => 2144,
+      Iir_Kind_Ascending_Type_Attribute => 2149,
+      Iir_Kind_Image_Attribute => 2155,
+      Iir_Kind_Value_Attribute => 2161,
+      Iir_Kind_Pos_Attribute => 2167,
+      Iir_Kind_Val_Attribute => 2173,
+      Iir_Kind_Succ_Attribute => 2179,
+      Iir_Kind_Pred_Attribute => 2185,
+      Iir_Kind_Leftof_Attribute => 2191,
+      Iir_Kind_Rightof_Attribute => 2197,
+      Iir_Kind_Signal_Slew_Attribute => 2205,
+      Iir_Kind_Quantity_Slew_Attribute => 2213,
+      Iir_Kind_Ramp_Attribute => 2221,
+      Iir_Kind_Zoh_Attribute => 2229,
+      Iir_Kind_Ltf_Attribute => 2237,
+      Iir_Kind_Ztf_Attribute => 2247,
+      Iir_Kind_Dot_Attribute => 2254,
+      Iir_Kind_Integ_Attribute => 2261,
+      Iir_Kind_Quantity_Delayed_Attribute => 2269,
+      Iir_Kind_Above_Attribute => 2277,
+      Iir_Kind_Delayed_Attribute => 2286,
+      Iir_Kind_Stable_Attribute => 2295,
+      Iir_Kind_Quiet_Attribute => 2304,
+      Iir_Kind_Transaction_Attribute => 2313,
+      Iir_Kind_Event_Attribute => 2317,
+      Iir_Kind_Active_Attribute => 2321,
+      Iir_Kind_Last_Event_Attribute => 2325,
+      Iir_Kind_Last_Active_Attribute => 2329,
+      Iir_Kind_Last_Value_Attribute => 2333,
+      Iir_Kind_Driving_Attribute => 2337,
+      Iir_Kind_Driving_Value_Attribute => 2341,
+      Iir_Kind_Behavior_Attribute => 2341,
+      Iir_Kind_Structure_Attribute => 2341,
+      Iir_Kind_Simple_Name_Attribute => 2348,
+      Iir_Kind_Instance_Name_Attribute => 2353,
+      Iir_Kind_Path_Name_Attribute => 2358,
+      Iir_Kind_Left_Array_Attribute => 2365,
+      Iir_Kind_Right_Array_Attribute => 2372,
+      Iir_Kind_High_Array_Attribute => 2379,
+      Iir_Kind_Low_Array_Attribute => 2386,
+      Iir_Kind_Length_Array_Attribute => 2393,
+      Iir_Kind_Ascending_Array_Attribute => 2400,
+      Iir_Kind_Range_Array_Attribute => 2407,
+      Iir_Kind_Reverse_Range_Array_Attribute => 2414,
+      Iir_Kind_Attribute_Name => 2423
      );
 
    function Get_Fields_First (K : Iir_Kind) return Fields_Index is
@@ -6286,6 +6293,8 @@ package body Vhdl.Nodes_Meta is
             return Get_Interface_Declaration_Chain (N);
          when Field_Default_Subprogram =>
             return Get_Default_Subprogram (N);
+         when Field_Associated_Subprogram =>
+            return Get_Associated_Subprogram (N);
          when Field_Subprogram_Specification =>
             return Get_Subprogram_Specification (N);
          when Field_Sequential_Statement_Chain =>
@@ -6752,6 +6761,8 @@ package body Vhdl.Nodes_Meta is
             Set_Interface_Declaration_Chain (N, V);
          when Field_Default_Subprogram =>
             Set_Default_Subprogram (N, V);
+         when Field_Associated_Subprogram =>
+            Set_Associated_Subprogram (N, V);
          when Field_Subprogram_Specification =>
             Set_Subprogram_Specification (N, V);
          when Field_Sequential_Statement_Chain =>
@@ -9209,6 +9220,17 @@ package body Vhdl.Nodes_Meta is
       end case;
    end Has_Default_Subprogram;
 
+   function Has_Associated_Subprogram (K : Iir_Kind) return Boolean is
+   begin
+      case K is
+         when Iir_Kind_Interface_Function_Declaration
+           | Iir_Kind_Interface_Procedure_Declaration =>
+            return True;
+         when others =>
+            return False;
+      end case;
+   end Has_Associated_Subprogram;
+
    function Has_Subprogram_Specification (K : Iir_Kind) return Boolean is
    begin
       case K is
diff --git a/src/vhdl/vhdl-nodes_meta.ads b/src/vhdl/vhdl-nodes_meta.ads
index 9d18dcb2d..3092597a7 100644
--- a/src/vhdl/vhdl-nodes_meta.ads
+++ b/src/vhdl/vhdl-nodes_meta.ads
@@ -172,6 +172,7 @@ package Vhdl.Nodes_Meta is
       Field_Base_Name,
       Field_Interface_Declaration_Chain,
       Field_Default_Subprogram,
+      Field_Associated_Subprogram,
       Field_Subprogram_Specification,
       Field_Sequential_Statement_Chain,
       Field_Simultaneous_Statement_Chain,
@@ -767,6 +768,7 @@ package Vhdl.Nodes_Meta is
    function Has_Base_Name (K : Iir_Kind) return Boolean;
    function Has_Interface_Declaration_Chain (K : Iir_Kind) return Boolean;
    function Has_Default_Subprogram (K : Iir_Kind) return Boolean;
+   function Has_Associated_Subprogram (K : Iir_Kind) return Boolean;
    function Has_Subprogram_Specification (K : Iir_Kind) return Boolean;
    function Has_Sequential_Statement_Chain (K : Iir_Kind) return Boolean;
    function Has_Simultaneous_Statement_Chain (K : Iir_Kind) return Boolean;