-- VHDL PSL parser. -- Copyright (C) 2009 Tristan Gingold -- -- GHDL is free software; you can redistribute it and/or modify it under -- the terms of the GNU General Public License as published by the Free -- Software Foundation; either version 2, or (at your option) any later -- version. -- -- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY -- WARRANTY; without even the implied warranty of MERCHANTABILITY or -- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- for more details. -- -- You should have received a copy of the GNU General Public License -- along with GHDL; see the file COPYING. If not, write to the Free -- Software Foundation, 59 Temple Place - Suite 330, Boston, MA -- 02111-1307, USA. with Types; use Types; with Errorout; use Errorout; with PSL.Nodes; use PSL.Nodes; with Vhdl.Nodes; with Vhdl.Scanner; use Vhdl.Scanner; with PSL.Errors; use PSL.Errors; with PSL.Priorities; use PSL.Priorities; with Vhdl.Parse; package body Vhdl.Parse_Psl is subtype Vhdl_Node is Vhdl.Nodes.Iir; procedure Error_Msg_Parse (Msg: String) is begin Report_Msg (Msgid_Error, Errorout.Parse, Get_Token_Coord, Msg); end Error_Msg_Parse; procedure Error_Msg_Parse (Loc : Location_Type; Msg: String; Args : Earg_Arr := No_Eargs) is begin Report_Msg (Msgid_Error, Errorout.Parse, +Loc, Msg, Args); end Error_Msg_Parse; function Create_Node_Loc (K : Nkind) return Node is Res : Node; begin Res := PSL.Nodes.Create_Node (K); Set_Location (Res, Get_Token_Location); return Res; end Create_Node_Loc; function Parse_Number return Node is Res : Node; begin if Current_Token = Tok_Integer then Res := Create_Node_Loc (N_Number); -- FIXME: handle overflow. Set_Value (Res, Uns32 (Current_Iir_Int64)); Scan; return Res; elsif Current_Token = Tok_Inf then -- FIXME: create node Scan; return Null_Node; else Error_Msg_Parse ("number expected"); return Null_Node; end if; end Parse_Number; procedure Parse_Count (N : Node) is begin Set_Low_Bound (N, Parse_Number); if Current_Token = Tok_To then Scan; Set_High_Bound (N, Parse_Number); end if; end Parse_Count; function Psl_To_Vhdl (N : Node) return Vhdl_Node; function Binary_Psl_Operator_To_Vhdl (N : Node; Kind : Vhdl.Nodes.Iir_Kind) return Vhdl_Node is use Vhdl.Nodes; Res : Iir; begin Res := Create_Iir (Kind); Set_Location (Res, Get_Location (N)); Set_Left (Res, Psl_To_Vhdl (Get_Left (N))); Set_Right (Res, Psl_To_Vhdl (Get_Right (N))); return Res; end Binary_Psl_Operator_To_Vhdl; function Psl_To_Vhdl (N : Node) return Vhdl_Node is use Vhdl.Nodes; Res : Iir; begin case Get_Kind (N) is when N_HDL_Expr => Res := Vhdl_Node (Get_HDL_Node (N)); when N_And_Prop => Res := Binary_Psl_Operator_To_Vhdl (N, Iir_Kind_And_Operator); when N_Or_Prop => Res := Binary_Psl_Operator_To_Vhdl (N, Iir_Kind_Or_Operator); when others => Error_Msg_Parse (+N, "PSL construct not allowed as VHDL expression"); Res := Create_Iir (Iir_Kind_Error); Set_Location (Res, Get_Location (N)); end case; Free_Node (N); return Res; end Psl_To_Vhdl; function Vhdl_To_Psl (N : Vhdl_Node) return Node is use Vhdl.Nodes; Res : PSL_Node; begin Res := Create_Node_Loc (N_HDL_Expr); if N /= Null_Iir then Set_Location (Res, Get_Location (N)); Set_HDL_Node (Res, Int32 (N)); end if; return Res; end Vhdl_To_Psl; function Parse_Psl_Sequence_Or_SERE (Full_Hdl_Expr : Boolean) return Node; function Parse_FL_Property (Prio : Priority) return Node; function Parse_Parenthesis_Boolean return Node; function Parse_Boolean (Parent_Prio : Priority) return Node; function Parse_Unary_Boolean (Full_Hdl_Expr : Boolean) return Node is use Parse; use Vhdl.Nodes; Left, Expr : Iir; Op : Iir_Kind; begin if Full_Hdl_Expr then Expr := Parse_Expression; else -- Boolean operators must be parse, *except* and/or that could be at -- upper layers (FL). Expr := Parse_Expression (Prio_Relation); loop case Current_Token is when Tok_Xor => Op := Iir_Kind_Xor_Operator; when Tok_Nand => Op := Iir_Kind_Nand_Operator; when Tok_Nor => Op := Iir_Kind_Nor_Operator; when Tok_Xnor => Op := Iir_Kind_Xnor_Operator; when others => exit; end case; Left := Expr; Expr := Create_Iir (Op); Set_Location (Expr, Get_Token_Location); Set_Left (Expr, Left); -- Skip operator. Scan; Set_Right (Expr, Parse_Expression (Prio_Relation)); end loop; end if; return Vhdl_To_Psl (Expr); end Parse_Unary_Boolean; function Parse_Boolean_Rhs (Parent_Prio : Priority; Left : Node) return Node is Kind : Nkind; Prio : Priority; Res : Node; Tmp : Node; begin Res := Left; loop case Current_Token is when Tok_And => Kind := N_And_Bool; Prio := Prio_Seq_And; when Tok_Or => Kind := N_Or_Bool; Prio := Prio_Seq_Or; when others => return Res; end case; if Parent_Prio >= Prio then return Res; end if; Tmp := Create_Node_Loc (Kind); Scan; Set_Left (Tmp, Res); Res := Tmp; Tmp := Parse_Boolean (Prio); Set_Right (Res, Tmp); end loop; end Parse_Boolean_Rhs; function Parse_Boolean (Parent_Prio : Priority) return Node is begin return Parse_Boolean_Rhs (Parent_Prio, Parse_Unary_Boolean (False)); end Parse_Boolean; function Parse_Psl_Boolean return PSL_Node is begin return Parse_Boolean (Prio_Lowest); end Parse_Psl_Boolean; function Parse_Parenthesis_Boolean return Node is Res : Node; begin if Current_Token /= Tok_Left_Paren then Error_Msg_Parse ("'(' expected before boolean expression"); return Null_Node; else Scan; Res := Parse_Psl_Boolean; if Current_Token = Tok_Right_Paren then Scan; else Error_Msg_Parse ("missing matching ')' for boolean expression"); end if; return Res; end if; end Parse_Parenthesis_Boolean; -- A.4.5 Sequential Extended Regular Expressions (SEREs) -- SERE ::= -- Boolean -- | Sequence -- | SERE ; SERE -- | SERE : SERE -- | Compound_SERE function Parse_SERE (Prio : Priority) return Node is Left, Res : Node; Kind : Nkind; Op_Prio : Priority; begin Left := Parse_Psl_Sequence_Or_SERE (True); loop case Current_Token is when Tok_Semi_Colon => Kind := N_Concat_SERE; Op_Prio := Prio_Seq_Concat; when Tok_Colon => Kind := N_Fusion_SERE; Op_Prio := Prio_Seq_Fusion; when Tok_Within => Kind := N_Within_SERE; Op_Prio := Prio_Seq_Within; when Tok_Ampersand => -- For non-length matching and, the operator is '&'. Kind := N_And_Seq; Op_Prio := Prio_Seq_And; when Tok_And_And => Kind := N_Match_And_Seq; Op_Prio := Prio_Seq_And; when Tok_Bar => Kind := N_Or_Seq; Op_Prio := Prio_Seq_Or; -- when Tok_Bar_Bar => -- Res := Create_Node_Loc (N_Or_Bool); -- Scan; -- Set_Left (Res, Left); -- Set_Right (Res, Parse_Boolean (Prio_Seq_Or)); -- return Res; when others => return Left; end case; if Prio >= Op_Prio then return Left; end if; Res := Create_Node_Loc (Kind); Scan; Set_Left (Res, Left); Set_Right (Res, Parse_SERE (Op_Prio)); Left := Res; end loop; end Parse_SERE; -- A.4.7 Sequences -- Braced_SERE ::= -- { SERE } -- -- precond : '{' -- postcond: next token after '}' function Parse_Braced_SERE return Node is Res : Node; begin pragma Assert (Current_Token = Tok_Left_Curly); Res := Create_Node_Loc (N_Braced_SERE); -- Skip '{' Scan; Set_SERE (Res, Parse_SERE (Prio_Lowest)); if Current_Token /= Tok_Right_Curly then Error_Msg_Parse ("missing '}' after braced SERE"); else -- Skip '}' Scan; end if; return Res; end Parse_Braced_SERE; -- Parse [ Count ] ']' function Parse_Maybe_Count (Kind : Nkind; Seq : Node) return Node is N : Node; begin N := Create_Node_Loc (Kind); Set_Sequence (N, Seq); Scan; if Current_Token /= Tok_Right_Bracket then Parse_Count (N); end if; if Current_Token /= Tok_Right_Bracket then Error_Msg_Parse ("missing ']'"); else Scan; end if; return N; end Parse_Maybe_Count; procedure Parse_Bracket_Range (N : Node) is begin if Current_Token /= Tok_Left_Bracket then Error_Msg_Parse ("'[' expected"); else Scan; Set_Low_Bound (N, Parse_Number); if Current_Token /= Tok_To then Error_Msg_Parse ("'to' expected in range after left bound"); else Scan; Set_High_Bound (N, Parse_Number); end if; if Current_Token /= Tok_Right_Bracket then Error_Msg_Parse ("']' expected after range"); else Scan; end if; end if; end Parse_Bracket_Range; function Parse_Bracket_Number return Node is Res : Node; begin if Current_Token /= Tok_Left_Bracket then Error_Msg_Parse ("'[' expected"); return Null_Node; else Scan; Res := Parse_Number; if Current_Token /= Tok_Right_Bracket then Error_Msg_Parse ("']' expected after range"); else Scan; end if; return Res; end if; end Parse_Bracket_Number; function Parse_Psl_Sequence_Or_SERE (Full_Hdl_Expr : Boolean) return Node is Res, N : Node; begin case Current_Token is when Tok_Left_Curly => Res := Parse_Braced_SERE; if Current_Token = Tok_Arobase then N := Create_Node_Loc (N_Clocked_SERE); Set_SERE (N, Res); -- Skip '@' Scan; Set_Boolean (N, Parse_Psl_Boolean); Res := N; end if; when Tok_Brack_Star => return Parse_Maybe_Count (N_Star_Repeat_Seq, Null_Node); when Tok_Left_Paren => if Parse.Flag_Parse_Parenthesis then Res := Create_Node_Loc (N_Paren_Bool); -- Skip '('. Scan; Set_Boolean (Res, Parse_Psl_Boolean); if Current_Token = Tok_Right_Paren then Scan; else Error_Msg_Parse ("missing matching ')'"); end if; else Res := Parse_Parenthesis_Boolean; end if; if Current_Token = Tok_Or or else Current_Token = Tok_And then Res := Parse_Boolean_Rhs (Prio_Lowest, Res); end if; when Tok_Brack_Plus_Brack => Res := Create_Node_Loc (N_Plus_Repeat_Seq); Scan; return Res; when others => -- Repeated_SERE Res := Parse_Unary_Boolean (Full_Hdl_Expr); end case; loop case Current_Token is when Tok_Brack_Star => Res := Parse_Maybe_Count (N_Star_Repeat_Seq, Res); when Tok_Brack_Plus_Brack => N := Create_Node_Loc (N_Plus_Repeat_Seq); Set_Sequence (N, Res); -- Skip '[+]' Scan; Res := N; when Tok_Brack_Arrow => Res := Parse_Maybe_Count (N_Goto_Repeat_Seq, Res); when Tok_Brack_Equal => N := Create_Node_Loc (N_Equal_Repeat_Seq); Set_Sequence (N, Res); -- Skip '[=' Scan; Parse_Count (N); if Current_Token /= Tok_Right_Bracket then Error_Msg_Parse ("missing ']'"); else Scan; end if; Res := N; when others => exit; end case; end loop; return Res; end Parse_Psl_Sequence_Or_SERE; -- IEEE1850 A.4.7 Sequences -- Sequence ::= -- Sequence_Instance -- | Repeated_SERE -- | Braced_SERE -- | Clocked_SERE function Parse_Psl_Sequence return Node is Res : Node; begin Res := Parse_Psl_Sequence_Or_SERE (True); -- May not be a sequence! -- This test is also performed in sem_psl in order to fully handle -- sequence_instance. case Get_Kind (Res) is when N_Star_Repeat_Seq | N_Goto_Repeat_Seq | N_Plus_Repeat_Seq | N_Equal_Repeat_Seq | N_Braced_SERE | N_Clocked_SERE => null; when N_HDL_Expr => -- Need to be checked later: can be a sequence instance or a -- boolean. null; when others => Error_Msg_Parse ("sequence expected here"); end case; return Res; end Parse_Psl_Sequence; -- precond: '(' -- postcond: next token function Parse_Parenthesis_FL_Property return Node is Prop : Node; Res : Node; Loc : Location_Type; begin Loc := Get_Token_Location; if Current_Token /= Tok_Left_Paren then Error_Msg_Parse ("'(' expected around property"); return Parse_FL_Property (Prio_Lowest); else if Parse.Flag_Parse_Parenthesis then Res := Create_Node_Loc (N_Paren_Prop); end if; -- Skip '('. Scan; Prop := Parse_FL_Property (Prio_Lowest); if Current_Token = Tok_Right_Paren then -- Skip ')'. Scan; else Error_Msg_Parse ("missing matching ')' for '(' at line " & Image (Loc, False)); end if; if Get_Kind (Prop) = N_HDL_Expr then declare N : Vhdl_Node; begin N := Psl_To_Vhdl (Prop); N := Parse.Parse_Binary_Expression (N, Parse.Prio_Expression); Prop := Vhdl_To_Psl (N); end; end if; if Parse.Flag_Parse_Parenthesis then Set_Property (Res, Prop); return Res; else return Prop; end if; end if; end Parse_Parenthesis_FL_Property; -- Parse '[' finite_Range ']' '(' FL_Property ')' function Parse_Range_Property (K : Nkind; Strong : Boolean) return Node is Res : Node; begin Res := Create_Node_Loc (K); Set_Strong_Flag (Res, Strong); Scan; Parse_Bracket_Range (Res); Set_Property (Res, Parse_Parenthesis_FL_Property); return Res; end Parse_Range_Property; -- Parse '(' Boolean ')' '[' Range ']' '(' FL_Property ')' function Parse_Boolean_Range_Property (K : Nkind; Strong : Boolean) return Node is Res : Node; begin Res := Create_Node_Loc (K); Set_Strong_Flag (Res, Strong); Scan; Set_Boolean (Res, Parse_Parenthesis_Boolean); Parse_Bracket_Range (Res); Set_Property (Res, Parse_Parenthesis_FL_Property); return Res; end Parse_Boolean_Range_Property; function Parse_FL_Property_1 return Node is Res : Node; Tmp : Node; begin case Current_Token is when Tok_Always => Res := Create_Node_Loc (N_Always); Scan; Set_Property (Res, Parse_FL_Property (Prio_FL_Invariance)); when Tok_Never => Res := Create_Node_Loc (N_Never); Scan; Set_Property (Res, Parse_FL_Property (Prio_FL_Invariance)); when Tok_Eventually_Em => Res := Create_Node_Loc (N_Eventually); Scan; Set_Property (Res, Parse_FL_Property (Prio_FL_Occurence)); when Tok_Next => Res := Create_Node_Loc (N_Next); Scan; if Current_Token = Tok_Left_Bracket then Set_Number (Res, Parse_Bracket_Number); Set_Property (Res, Parse_Parenthesis_FL_Property); else Set_Property (Res, Parse_FL_Property (Prio_FL_Occurence)); end if; when Tok_Next_A => Res := Parse_Range_Property (N_Next_A, False); when Tok_Next_A_Em => Res := Parse_Range_Property (N_Next_A, True); when Tok_Next_E => Res := Parse_Range_Property (N_Next_E, False); when Tok_Next_E_Em => Res := Parse_Range_Property (N_Next_E, True); when Tok_Next_Event => Res := Create_Node_Loc (N_Next_Event); Scan; Set_Boolean (Res, Parse_Parenthesis_Boolean); if Current_Token = Tok_Left_Bracket then Set_Number (Res, Parse_Bracket_Number); end if; Set_Property (Res, Parse_Parenthesis_FL_Property); when Tok_Next_Event_A => Res := Parse_Boolean_Range_Property (N_Next_Event_A, False); when Tok_Next_Event_A_Em => Res := Parse_Boolean_Range_Property (N_Next_Event_A, True); when Tok_Next_Event_E => Res := Parse_Boolean_Range_Property (N_Next_Event_E, False); when Tok_Next_Event_E_Em => Res := Parse_Boolean_Range_Property (N_Next_Event_E, True); when Tok_Left_Paren => return Parse_Parenthesis_FL_Property; when Tok_Left_Curly => Res := Parse_Psl_Sequence_Or_SERE (True); if Get_Kind (Res) = N_Braced_SERE and then Current_Token = Tok_Left_Paren then -- FIXME: must check that RES is really a sequence -- (and not a SERE). Tmp := Create_Node_Loc (N_Overlap_Imp_Seq); Set_Sequence (Tmp, Res); Set_Property (Tmp, Parse_Parenthesis_FL_Property); Res := Tmp; end if; when others => Res := Parse_Psl_Sequence_Or_SERE (False); end case; return Res; end Parse_FL_Property_1; function Parse_St_Binary_FL_Property (K : Nkind; Left : Node; Strong : Boolean; Inclusive : Boolean) return Node is Res : Node; begin Res := Create_Node_Loc (K); Set_Strong_Flag (Res, Strong); Set_Inclusive_Flag (Res, Inclusive); Scan; Set_Left (Res, Left); Set_Right (Res, Parse_FL_Property (Prio_FL_Bounding)); return Res; end Parse_St_Binary_FL_Property; function Parse_Binary_FL_Property (K : Nkind; Left : Node; Prio : Priority) return Node is Res : Node; begin Res := Create_Node_Loc (K); Scan; Set_Left (Res, Left); Set_Right (Res, Parse_FL_Property (Prio)); return Res; end Parse_Binary_FL_Property; -- During LR parsing, phrases before |-> and |=> are parsed as properties, -- but they are in fact sequences. Convert them (in particular the -- boolean operators need to be rewritten). function Property_To_Sequence (N : Node) return Node is procedure Rewrite_Binary (Res : Node; N : Node) is begin Set_Location (Res, Get_Location (N)); Set_Left (Res, Property_To_Sequence (Get_Left (N))); Set_Right (Res, Property_To_Sequence (Get_Right (N))); Free_Node (N); end Rewrite_Binary; Res : Node; begin case Get_Kind (N) is when N_Sequence_Instance | N_Star_Repeat_Seq | N_Plus_Repeat_Seq | N_Equal_Repeat_Seq | N_Goto_Repeat_Seq | N_Braced_SERE | N_Clocked_SERE => return N; when N_And_Prop => Res := Create_Node (N_And_Seq); Rewrite_Binary (Res, N); return Res; when N_Or_Prop => Res := Create_Node (N_Or_Seq); Rewrite_Binary (Res, N); return Res; when N_Before => Set_Left (N, Property_To_Sequence (Get_Left (N))); Set_Right (N, Property_To_Sequence (Get_Right (N))); return N; when N_Clock_Event | N_Always | N_Never | N_Eventually | N_Until | N_Property_Parameter | N_Property_Instance | N_Endpoint_Instance | N_Strong | N_Abort | N_Next_Event_E | N_Next_Event_A | N_Next_Event | N_Next_E | N_Next_A | N_Next | N_Log_Imp_Prop | N_Paren_Prop => Error_Msg_Parse (+N, "construct not allowed in sequences"); return N; when N_Const_Parameter | N_Boolean_Parameter | N_Sequence_Parameter | N_Actual | N_And_Seq | N_Or_Seq | N_Imp_Seq | N_Overlap_Imp_Seq | N_Match_And_Seq | N_Imp_Bool | N_Or_Bool | N_And_Bool | N_Not_Bool | N_Paren_Bool | N_Fusion_SERE | N_HDL_Expr | N_Hdl_Mod_Name | N_Concat_SERE | N_Within_SERE | N_False | N_True | N_Number | N_Name_Decl | N_Name | N_EOS | N_Error => return N; when N_Vmode | N_Vunit | N_Vprop | N_Assert_Directive | N_Property_Declaration | N_Sequence_Declaration | N_Endpoint_Declaration => raise Internal_Error; end case; end Property_To_Sequence; -- A.4.4 PSL properties -- FL_Property::= -- Boolean -- | ( FL_Property ) -- | Sequence [ ! ] -- | FL_property_name [ ( Actual_Parameter_List ) ] -- | FL_Property @ Clock_Expression -- | FL_Property abort Boolean -- | FL_Property async_abort Boolean -- | FL_Property sync_abort Boolean -- | Parameterized_Property -- | NOT_OP FL_Property -- | FL_Property AND_OP FL_Property -- | FL_Property OR_OP FL_Property -- | FL_Property -> FL_Property -- | FL_Property <-> FL_Property -- | always FL_Property -- | never FL_Property -- | next FL_Property -- | next! FL_Property -- | eventually! FL_Property -- | FL_Property until! FL_Property -- | FL_Property until FL_Property -- | FL_Property until!_ FL_Property -- | FL_Property until_ FL_Property -- | FL_Property before! FL_Property -- | FL_Property before FL_Property -- | FL_Property before!_ FL_Property -- | FL_Property before_ FL_Property -- | next [ Number ] ( FL_Property ) -- | next! [ Number ] ( FL_Property ) -- | next_a [ finite_Range ] ( FL_Property ) -- | next_a! [ finite_Range ] ( FL_Property ) -- | next_e [ finite_Range ] ( FL_Property ) -- | next_e! [ finite_Range ] ( FL_Property ) -- | next_event! ( Boolean ) ( FL_Property ) -- | next_event ( Boolean ) ( FL_Property ) -- | next_event! ( Boolean ) [ positive_Number ] ( FL_Property ) -- | next_event ( Boolean ) [ positive_Number ] ( FL_Property ) -- | next_event_a! ( Boolean ) [ finite_positive_Range ] ( FL_Property ) -- | next_event_a ( Boolean ) [ finite_positive_Range ] ( FL_Property ) -- | next_event_e! ( Boolean ) [ finite_positive_Range ] ( FL_Property ) -- | next_event_e ( Boolean ) [ finite_positive_Range ] ( FL_Property ) -- | { SERE } ( FL_Property ) -- | Sequence |-> FL_Property -- | Sequence |=> FL_Property function Parse_FL_Property (Prio : Priority) return Node is Res : Node; N : Node; begin Res := Parse_FL_Property_1; loop case Current_Token is when Tok_Minus_Greater => if Prio > Prio_Bool_Imp then return Res; end if; N := Create_Node_Loc (N_Log_Imp_Prop); Set_Left (N, Res); Scan; Set_Right (N, Parse_FL_Property (Prio_Bool_Imp)); Res := N; when Tok_Bar_Arrow => if Prio > Prio_Seq_Imp then return Res; end if; N := Create_Node_Loc (N_Overlap_Imp_Seq); Set_Sequence (N, Property_To_Sequence (Res)); Scan; Set_Property (N, Parse_FL_Property (Prio_Seq_Imp)); Res := N; when Tok_Bar_Double_Arrow => if Prio > Prio_Seq_Imp then return Res; end if; N := Create_Node_Loc (N_Imp_Seq); Set_Sequence (N, Property_To_Sequence (Res)); Scan; Set_Property (N, Parse_FL_Property (Prio_Seq_Imp)); Res := N; when Tok_Abort => if Prio > Prio_FL_Abort then return Res; end if; N := Create_Node_Loc (N_Abort); Set_Property (N, Res); Scan; Set_Boolean (N, Parse_Boolean (Prio_Lowest)); -- Left associative. return N; when Tok_Exclam_Mark => N := Create_Node_Loc (N_Strong); Set_Property (N, Res); Scan; Res := N; when Tok_Until => if Prio > Prio_FL_Bounding then return Res; end if; Res := Parse_St_Binary_FL_Property (N_Until, Res, False, False); when Tok_Until_Em => if Prio > Prio_FL_Bounding then return Res; end if; Res := Parse_St_Binary_FL_Property (N_Until, Res, True, False); when Tok_Until_Un => if Prio > Prio_FL_Bounding then return Res; end if; Res := Parse_St_Binary_FL_Property (N_Until, Res, False, True); when Tok_Until_Em_Un => if Prio > Prio_FL_Bounding then return Res; end if; Res := Parse_St_Binary_FL_Property (N_Until, Res, True, True); when Tok_Before => if Prio > Prio_FL_Bounding then return Res; end if; Res := Parse_St_Binary_FL_Property (N_Before, Res, False, False); when Tok_Before_Em => if Prio > Prio_FL_Bounding then return Res; end if; Res := Parse_St_Binary_FL_Property (N_Before, Res, True, False); when Tok_Before_Un => if Prio > Prio_FL_Bounding then return Res; end if; Res := Parse_St_Binary_FL_Property (N_Before, Res, False, True); when Tok_Before_Em_Un => if Prio > Prio_FL_Bounding then return Res; end if; Res := Parse_St_Binary_FL_Property (N_Before, Res, True, True); when Tok_Or => if Prio > Prio_Seq_Or then return Res; end if; Res := Parse_Binary_FL_Property (N_Or_Prop, Res, Prio_Seq_Or); when Tok_And => if Prio > Prio_Seq_And then return Res; end if; Res := Parse_Binary_FL_Property (N_And_Prop, Res, Prio_Seq_And); when Token_Relational_Operator_Type => return Vhdl_To_Psl (Parse.Parse_Binary_Expression (Psl_To_Vhdl (Res), Parse.Prio_Relation)); when Tok_Colon | Tok_Bar | Tok_Ampersand | Tok_And_And => Error_Msg_Parse ("SERE operator '" & Image (Current_Token) & "' is not allowed in property"); Scan; N := Parse_FL_Property (Prio_Lowest); return Res; when Tok_Arobase => if Prio > Prio_Clock_Event then return Res; end if; N := Create_Node_Loc (N_Clock_Event); Set_Property (N, Res); Scan; Set_Boolean (N, Parse_Boolean (Prio_Clock_Event)); Res := N; when others => return Res; end case; end loop; end Parse_FL_Property; -- A.4.4 PSL properties -- Property ::= -- FL_Property -- | ... function Parse_Psl_Property return PSL_Node is begin return Parse_FL_Property (Prio_Lowest); end Parse_Psl_Property; -- precond: identifier -- postcond: ';' -- -- 6.2.4.1 Property declaration -- -- Property_Declaration ::= -- PROPERTY psl_identifier [ ( Formal_Parameter_List ) ] DEF_SYM -- property ; function Parse_Psl_Declaration (Tok : Token_Type) return PSL_Node is Res : Node; Param : Node; Last_Param : Node; Pkind : Nkind; Kind : Nkind; begin case Tok is when Tok_Property => Kind := N_Property_Declaration; when Tok_Sequence => Kind := N_Sequence_Declaration; when Tok_Psl_Endpoint => Kind := N_Endpoint_Declaration; when others => raise Internal_Error; end case; Res := Create_Node_Loc (Kind); if Current_Token = Tok_Identifier then Set_Identifier (Res, Current_Identifier); Scan; end if; -- Formal parameter list. if Current_Token = Tok_Left_Paren then Last_Param := Null_Node; loop -- precond: '(' or ';'. Scan; case Current_Token is when Tok_Psl_Const => Pkind := N_Const_Parameter; when Tok_Psl_Boolean => Pkind := N_Boolean_Parameter; when Tok_Property => Pkind := N_Property_Parameter; when Tok_Sequence => Pkind := N_Sequence_Parameter; when others => Error_Msg_Parse ("parameter type expected"); end case; -- Formal parameters. loop -- precond: parameter_type or ',' Scan; Param := Create_Node_Loc (Pkind); if Current_Token /= Tok_Identifier then Error_Msg_Parse ("identifier for parameter expected"); else Set_Identifier (Param, Current_Identifier); end if; if Last_Param = Null_Node then Set_Parameter_List (Res, Param); else Set_Chain (Last_Param, Param); end if; Last_Param := Param; Scan; exit when Current_Token /= Tok_Comma; end loop; exit when Current_Token = Tok_Right_Paren; if Current_Token /= Tok_Semi_Colon then Error_Msg_Parse ("';' expected between formal parameter"); end if; end loop; Scan; end if; if Current_Token /= Tok_Is then Error_Msg_Parse ("'is' expected after identifier"); else -- Skip 'is'. Scan; end if; case Kind is when N_Property_Declaration => Set_Property (Res, Parse_Psl_Property); when N_Sequence_Declaration | N_Endpoint_Declaration => Set_Sequence (Res, Parse_Psl_Sequence); when others => raise Internal_Error; end case; return Res; end Parse_Psl_Declaration; function Is_Instantiated_Declaration (N : PSL_Node) return Boolean is begin return Get_Parameter_List (N) = Null_Node; end Is_Instantiated_Declaration; end Vhdl.Parse_Psl; n889' href='#n889'>889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396