with Urealp; use Urealp;
package body Sprint is
+ Current_Source_File : Source_File_Index;
+ -- Index of source file whose generated code is being dumped
- Debug_Node : Node_Id := Empty;
- -- If we are in Debug_Generated_Code mode, then this location is set
- -- to the current node requiring Sloc fixup, until Set_Debug_Sloc is
- -- called to set the proper value. The call clears it back to Empty.
+ Dump_Node : Node_Id := Empty;
+ -- This is set to the current node, used for printing line numbers. In
+ -- Debug_Generated_Code mode, Dump_Node is set to the current node
+ -- requiring Sloc fixup, until Set_Debug_Sloc is called to set the proper
+ -- value. The call clears it back to Empty.
Debug_Sloc : Source_Ptr;
-- Sloc of first byte of line currently being written if we are
Dump_Freeze_Null : Boolean;
-- Set True if freeze nodes and non-source null statements output
+ Freeze_Indent : Int := 0;
+ -- Keep track of freeze indent level (controls output of blank lines before
+ -- procedures within expression freeze actions). Relevant only if we are
+ -- not in Dump_Source_Text mode, since in Dump_Source_Text mode we don't
+ -- output these blank lines in any case.
+
Indent : Int := 0;
-- Number of columns for current line output indentation
-- Set True if subsequent Write_Indent call to be ignored, gets reset
-- by this call, so it is only active to suppress a single indent call.
+ Last_Line_Printed : Physical_Line_Number;
+ -- This keeps track of the physical line number of the last source line
+ -- that has been output. The value is only valid in Dump_Source_Text mode.
+
Line_Limit : constant := 72;
-- Limit value for chopping long lines
- Freeze_Indent : Int := 0;
- -- Keep track of freeze indent level (controls blank lines before
- -- procedures within expression freeze actions)
-
-------------------------------
-- Operator Precedence Table --
-------------------------------
-- then start an extra line with two characters extra indentation for
-- continuing text on the next line.
+ procedure Extra_Blank_Line;
+ -- In some situations we write extra blank lines to separate the generated
+ -- code to make it more readable. However, these extra blank lines are not
+ -- generated in Dump_Source_Text mode, since there the source text lines
+ -- output with preceding blank lines are quite sufficient as separators.
+ -- This procedure writes a blank line if Dump_Source_Text is False.
+
procedure Indent_Annull;
-- Causes following call to Write_Indent to be ignored. This is used when
-- a higher level node wants to stop a lower level node from starting a
-- appropriate special syntax characters (# and @).
procedure Set_Debug_Sloc;
- -- If Debug_Node is non-empty, this routine sets the appropriate value
+ -- If Dump_Node is non-empty, this routine sets the appropriate value
-- in its Sloc field, from the current location in the debug source file
- -- that is currently being written. Note that Debug_Node is always empty
- -- if a debug source file is not being written.
+ -- that is currently being written.
procedure Sprint_And_List (List : List_Id);
-- Print the given list with items separated by vertical "and"
procedure Write_Condition_And_Reason (Node : Node_Id);
-- Write Condition and Reason codes of Raise_xxx_Error node
+ procedure Write_Corresponding_Source (S : String);
+ -- If S is a string with a single keyword (possibly followed by a space),
+ -- and if the next non-comment non-blank source line matches this keyword,
+ -- then output all source lines up to this matching line.
+
procedure Write_Discr_Specs (N : Node_Id);
-- Ouput discriminant specification for node, which is any of the type
-- declarations that can have discriminants.
-- generated code only, since in this case we don't specially mark nodes
-- created by rewriting).
+ procedure Write_Source_Line (L : Physical_Line_Number);
+ -- If writing of interspersed source lines is enabled, then write the given
+ -- line from the source file, preceded by Eol, then an extra blank line if
+ -- the line has at least one blank, is not a comment and is not line one,
+ -- then "--" and the line number followed by period followed by text of the
+ -- source line (without terminating Eol). If interspersed source line
+ -- output not enabled, then the call has no effect.
+
+ procedure Write_Source_Lines (L : Physical_Line_Number);
+ -- If writing of interspersed source lines is enabled, then writes source
+ -- lines Last_Line_Printed + 1 .. L, and updates Last_Line_Printed. If
+ -- interspersed source line output not enabled, then call has no effect.
+
procedure Write_Str_Sloc (S : String);
-- Like Write_Str, but sets debug Sloc of current debug node to first
-- non-blank character if a current debug node is active.
end if;
end Col_Check;
+ ----------------------
+ -- Extra_Blank_Line --
+ ----------------------
+
+ procedure Extra_Blank_Line is
+ begin
+ if not Dump_Source_Text then
+ Write_Indent;
+ end if;
+ end Extra_Blank_Line;
+
-------------------
-- Indent_Annull --
-------------------
begin
Dump_Generated_Only := True;
Dump_Original_Only := False;
+ Current_Source_File := No_Source_File;
Sprint_Node (Node);
Write_Eol;
end pg;
begin
Dump_Generated_Only := False;
Dump_Original_Only := True;
+ Current_Source_File := No_Source_File;
Sprint_Node (Node);
Write_Eol;
end po;
begin
Dump_Generated_Only := False;
Dump_Original_Only := False;
+ Current_Source_File := No_Source_File;
Sprint_Node (Node);
Write_Eol;
end ps;
procedure Set_Debug_Sloc is
begin
- if Present (Debug_Node) then
- Set_Sloc (Debug_Node, Debug_Sloc + Source_Ptr (Column - 1));
- Debug_Node := Empty;
+ if Debug_Generated_Code and then Present (Dump_Node) then
+ Set_Sloc (Dump_Node, Debug_Sloc + Source_Ptr (Column - 1));
+ Dump_Node := Empty;
end if;
end Set_Debug_Sloc;
procedure Underline;
-- Put underline under string we just printed
+ ---------------
+ -- Underline --
+ ---------------
+
procedure Underline is
Col : constant Int := Column;
-- avoids an infinite loop if an abort occurs during the dump.
if Debug_Flag_Z then
+ Current_Source_File := No_Source_File;
Debug_Flag_Z := False;
Write_Eol;
Write_Eol;
-- Dump requested units
for U in Main_Unit .. Last_Unit loop
+ Current_Source_File := Source_Index (U);
-- Dump all units if -gnatdf set, otherwise we dump only
-- the source files that are in the extended main source.
if Debug_Generated_Code then
Set_Special_Output (Print_Debug_Line'Access);
Create_Debug_Source (Source_Index (U), Debug_Sloc);
+ Write_Source_Line (1);
+ Last_Line_Printed := 1;
Sprint_Node (Cunit (U));
+ Write_Source_Lines (Last_Source_Line (Current_Source_File));
Write_Eol;
Close_Debug_Source;
Set_Special_Output (null);
Write_Str ("Source recreated from tree for ");
Write_Unit_Name (Unit_Name (U));
Underline;
+ Write_Source_Line (1);
+ Last_Line_Printed := 1;
Sprint_Node (Cunit (U));
+ Write_Source_Lines (Last_Source_Line (Current_Source_File));
Write_Eol;
Write_Eol;
end if;
------------------------
procedure Sprint_Node_Actual (Node : Node_Id) is
- Save_Debug_Node : constant Node_Id := Debug_Node;
+ Save_Dump_Node : constant Node_Id := Dump_Node;
begin
if Node = Empty then
Write_Str_With_Col_Check ("(");
end loop;
- -- Setup node for Sloc fixup if writing a debug source file. Note
- -- that we take care of any previous node not yet properly set.
+ -- Setup current dump node
- if Debug_Generated_Code then
- Debug_Node := Node;
- end if;
+ Dump_Node := Node;
if Nkind (Node) in N_Subexpr
and then Do_Range_Check (Node)
Write_Char_Sloc ('.');
Write_Str_Sloc ("all");
+ when N_Extended_Return_Statement =>
+ Write_Indent_Str_Sloc ("return ");
+ Sprint_Node_List (Return_Object_Declarations (Node));
+
+ if Present (Handled_Statement_Sequence (Node)) then
+ Write_Str_With_Col_Check (" do");
+ Sprint_Node (Handled_Statement_Sequence (Node));
+ Write_Indent_Str ("end return;");
+ else
+ Write_Indent_Str (";");
+ end if;
+
when N_Extension_Aggregate =>
Write_Str_With_Col_Check_Sloc ("(");
Sprint_Node (Ancestor_Part (Node));
Write_Str_With_Col_Check ("out ");
end if;
- Sprint_Node (Subtype_Mark (Node));
+ if Present (Subtype_Mark (Node)) then
- if Present (Expression (Node)) then
+ -- Ada 2005 (AI-423): Formal object with null exclusion
+
+ if Null_Exclusion_Present (Node) then
+ Write_Str ("not null ");
+ end if;
+
+ Sprint_Node (Subtype_Mark (Node));
+
+ -- Ada 2005 (AI-423): Formal object with access definition
+
+ else
+ pragma Assert (Present (Access_Definition (Node)));
+
+ Sprint_Node (Access_Definition (Node));
+ end if;
+
+ if Present (Default_Expression (Node)) then
Write_Str (" := ");
- Sprint_Node (Expression (Node));
+ Sprint_Node (Default_Expression (Node));
end if;
Write_Char (';');
Write_Char (']');
else
+ -- Output freeze actions. We increment Freeze_Indent during
+ -- this output to avoid generating extra blank lines before
+ -- any procedures included in the freeze actions.
+
Freeze_Indent := Freeze_Indent + 1;
Sprint_Indented_List (Actions (Node));
Freeze_Indent := Freeze_Indent - 1;
Write_Char (';');
when N_Generic_Package_Declaration =>
- Write_Indent;
+ Extra_Blank_Line;
Write_Indent_Str_Sloc ("generic ");
Sprint_Indented_List (Generic_Formal_Declarations (Node));
Write_Indent;
Write_Char (';');
when N_Generic_Subprogram_Declaration =>
- Write_Indent;
+ Extra_Blank_Line;
Write_Indent_Str_Sloc ("generic ");
Sprint_Indented_List (Generic_Formal_Declarations (Node));
Write_Indent;
Sprint_Node (Access_Definition (Node));
elsif Present (Subtype_Mark (Node)) then
+
+ -- Ada 2005 (AI-423): Object renaming with a null exclusion
+
+ if Null_Exclusion_Present (Node) then
+ Write_Str ("not null ");
+ end if;
+
Sprint_Node (Subtype_Mark (Node));
else
Write_Str_With_Col_Check_Sloc ("others");
when N_Package_Body =>
- Write_Indent;
+ Extra_Blank_Line;
Write_Indent_Str_Sloc ("package body ");
Sprint_Node (Defining_Unit_Name (Node));
Write_Str (" is");
Write_Str_With_Col_Check (" is separate;");
when N_Package_Declaration =>
- Write_Indent;
+ Extra_Blank_Line;
Write_Indent;
Sprint_Node_Sloc (Specification (Node));
Write_Char (';');
when N_Package_Instantiation =>
- Write_Indent;
+ Extra_Blank_Line;
Write_Indent_Str_Sloc ("package ");
Sprint_Node (Defining_Unit_Name (Node));
Write_Str (" is new ");
Write_Str_With_Col_Check ("out ");
end if;
- -- Ada 2005 (AI-231)
+ -- Ada 2005 (AI-231) parameter specification may carry
+ -- null exclusion. Do not print it now if this is an
+ -- access parameter, it is emitted when the access
+ -- definition is displayed.
- if Null_Exclusion_Present (Node) then
+ if Null_Exclusion_Present (Node)
+ and then Nkind (Parameter_Type (Node))
+ /= N_Access_Definition
+ then
Write_Str ("not null ");
end if;
Write_String_Table_Entry (Strval (Node));
when N_Subprogram_Body =>
+
+ -- Output extra blank line unless we are in freeze actions
+
if Freeze_Indent = 0 then
- Write_Indent;
+ Extra_Blank_Line;
end if;
Write_Indent;
Write_Indent_Str_Sloc ("separate (");
Sprint_Node (Name (Node));
Write_Char (')');
- Write_Eol;
+ Extra_Blank_Line;
Sprint_Node (Proper_Body (Node));
when N_Task_Body =>
Write_Char (')');
end loop;
- pragma Assert (No (Debug_Node));
- Debug_Node := Save_Debug_Node;
+ Dump_Node := Save_Dump_Node;
end Sprint_Node_Actual;
----------------------
begin
Sprint_Node (Node);
- if Present (Debug_Node) then
- Set_Sloc (Debug_Node, Sloc (Node));
- Debug_Node := Empty;
+ if Debug_Generated_Code and then Present (Dump_Node) then
+ Set_Sloc (Dump_Node, Sloc (Node));
+ Dump_Node := Empty;
end if;
end Sprint_Node_Sloc;
--------------------------------
procedure Write_Condition_And_Reason (Node : Node_Id) is
- Image : constant String := RT_Exception_Code'Image
- (RT_Exception_Code'Val
- (UI_To_Int (Reason (Node))));
+ Cond : constant Node_Id := Condition (Node);
+ Image : constant String := RT_Exception_Code'Image
+ (RT_Exception_Code'Val
+ (UI_To_Int (Reason (Node))));
begin
- if Present (Condition (Node)) then
- Write_Str_With_Col_Check (" when ");
- Sprint_Node (Condition (Node));
+ if Present (Cond) then
+
+ -- If condition is a single entity, or NOT with a single entity,
+ -- output all on one line, since it will likely fit just fine.
+
+ if Is_Entity_Name (Cond)
+ or else (Nkind (Cond) = N_Op_Not
+ and then Is_Entity_Name (Right_Opnd (Cond)))
+ then
+ Write_Str_With_Col_Check (" when ");
+ Sprint_Node (Cond);
+ Write_Char (' ');
+
+ -- Otherwise for more complex condition, multiple lines
+
+ else
+ Write_Str_With_Col_Check (" when");
+ Indent := Indent + 2;
+ Write_Indent;
+ Sprint_Node (Cond);
+ Write_Indent;
+ Indent := Indent - 2;
+ end if;
+
+ -- If no condition, just need a space (all on one line)
+
+ else
+ Write_Char (' ');
end if;
- Write_Str (" """);
+ -- Write the reason
+
+ Write_Char ('"');
for J in 4 .. Image'Last loop
if Image (J) = '_' then
Write_Str ("""]");
end Write_Condition_And_Reason;
+ --------------------------------
+ -- Write_Corresponding_Source --
+ --------------------------------
+
+ procedure Write_Corresponding_Source (S : String) is
+ Loc : Source_Ptr;
+ Src : Source_Buffer_Ptr;
+
+ begin
+ -- Ignore if not in dump source text mode, or if in freeze actions
+
+ if Dump_Source_Text and then Freeze_Indent = 0 then
+
+ -- Ignore null string
+
+ if S = "" then
+ return;
+ end if;
+
+ -- Ignore space or semicolon at end of given string
+
+ if S (S'Last) = ' ' or else S (S'Last) = ';' then
+ Write_Corresponding_Source (S (S'First .. S'Last - 1));
+ return;
+ end if;
+
+ -- Loop to look at next lines not yet printed in source file
+
+ for L in
+ Last_Line_Printed + 1 .. Last_Source_Line (Current_Source_File)
+ loop
+ Src := Source_Text (Current_Source_File);
+ Loc := Line_Start (L, Current_Source_File);
+
+ -- If comment, keep looking
+
+ if Src (Loc .. Loc + 1) = "--" then
+ null;
+
+ -- Search to first non-blank
+
+ else
+ while Src (Loc) not in Line_Terminator loop
+
+ -- Non-blank found
+
+ if Src (Loc) /= ' ' and then Src (Loc) /= ASCII.HT then
+
+ -- Loop through characters in string to see if we match
+
+ for J in S'Range loop
+
+ -- If mismatch, then not the case we are looking for
+
+ if Src (Loc) /= S (J) then
+ return;
+ end if;
+
+ Loc := Loc + 1;
+ end loop;
+
+ -- If we fall through, string matched, if white space or
+ -- semicolon after the matched string, this is the case
+ -- we are looking for.
+
+ if Src (Loc) in Line_Terminator
+ or else Src (Loc) = ' '
+ or else Src (Loc) = ASCII.HT
+ or else Src (Loc) = ';'
+ then
+ -- So output source lines up to and including this one
+
+ Write_Source_Lines (L);
+ return;
+ end if;
+ end if;
+
+ Loc := Loc + 1;
+ end loop;
+ end if;
+
+ -- Line was all blanks, or a comment line, keep looking
+
+ end loop;
+ end if;
+ end Write_Corresponding_Source;
+
-----------------------
-- Write_Discr_Specs --
-----------------------
------------------
procedure Write_Indent is
+ Loc : constant Source_Ptr := Sloc (Dump_Node);
+
begin
if Indent_Annull_Flag then
Indent_Annull_Flag := False;
else
+ if Dump_Source_Text and then Loc > No_Location then
+ if Get_Source_File_Index (Loc) = Current_Source_File then
+ Write_Source_Lines
+ (Get_Physical_Line_Number (Sloc (Dump_Node)));
+ end if;
+ end if;
+
Write_Eol;
for J in 1 .. Indent loop
-- The remainder of the declaration must be printed unless we are
-- printing the original tree and this is not the last identifier
- return
- not Dump_Original_Only or else not More_Ids (Node);
-
+ return not Dump_Original_Only or else not More_Ids (Node);
end Write_Indent_Identifiers_Sloc;
----------------------
procedure Write_Indent_Str (S : String) is
begin
+ Write_Corresponding_Source (S);
Write_Indent;
Write_Str (S);
end Write_Indent_Str;
procedure Write_Indent_Str_Sloc (S : String) is
begin
+ Write_Corresponding_Source (S);
Write_Indent;
Write_Str_Sloc (S);
end Write_Indent_Str_Sloc;
Write_Id (B);
- -- Print bounds if not different from base type
+ -- Print bounds if different from base type
declare
L : constant Node_Id := Type_Low_Bound (Typ);
H : constant Node_Id := Type_High_Bound (Typ);
- LE : constant Node_Id := Type_Low_Bound (B);
- HE : constant Node_Id := Type_High_Bound (B);
+ LE : Node_Id;
+ HE : Node_Id;
begin
- if Nkind (L) = N_Integer_Literal
- and then Nkind (H) = N_Integer_Literal
- and then Nkind (LE) = N_Integer_Literal
- and then Nkind (HE) = N_Integer_Literal
- and then UI_Eq (Intval (L), Intval (LE))
- and then UI_Eq (Intval (H), Intval (HE))
+ -- B can either be a scalar type, in which case the
+ -- declaration of Typ may constrain it with different
+ -- bounds, or a private type, in which case we know
+ -- that the declaration of Typ cannot have a scalar
+ -- constraint.
+
+ if Is_Scalar_Type (B) then
+ LE := Type_Low_Bound (B);
+ HE := Type_High_Bound (B);
+ else
+ LE := Empty;
+ HE := Empty;
+ end if;
+
+ if No (LE)
+ or else (True
+ and then Nkind (L) = N_Integer_Literal
+ and then Nkind (H) = N_Integer_Literal
+ and then Nkind (LE) = N_Integer_Literal
+ and then Nkind (HE) = N_Integer_Literal
+ and then UI_Eq (Intval (L), Intval (LE))
+ and then UI_Eq (Intval (H), Intval (HE)))
then
null;
end if;
end Write_Param_Specs;
- --------------------------
+ -----------------------
-- Write_Rewrite_Str --
- --------------------------
+ -----------------------
procedure Write_Rewrite_Str (S : String) is
begin
end if;
end Write_Rewrite_Str;
+ -----------------------
+ -- Write_Source_Line --
+ -----------------------
+
+ procedure Write_Source_Line (L : Physical_Line_Number) is
+ Loc : Source_Ptr;
+ Src : Source_Buffer_Ptr;
+ Scn : Source_Ptr;
+
+ begin
+ if Dump_Source_Text then
+ Src := Source_Text (Current_Source_File);
+ Loc := Line_Start (L, Current_Source_File);
+ Write_Eol;
+
+ -- See if line is a comment line, if not, and if not line one,
+ -- precede with blank line.
+
+ Scn := Loc;
+ while Src (Scn) = ' ' or else Src (Scn) = ASCII.HT loop
+ Scn := Scn + 1;
+ end loop;
+
+ if (Src (Scn) in Line_Terminator
+ or else Src (Scn .. Scn + 1) /= "--")
+ and then L /= 1
+ then
+ Write_Eol;
+ end if;
+
+ -- Now write the source text of the line
+
+ Write_Str ("-- ");
+ Write_Int (Int (L));
+ Write_Str (": ");
+
+ while Src (Loc) not in Line_Terminator loop
+ Write_Char (Src (Loc));
+ Loc := Loc + 1;
+ end loop;
+ end if;
+ end Write_Source_Line;
+
+ ------------------------
+ -- Write_Source_Lines --
+ ------------------------
+
+ procedure Write_Source_Lines (L : Physical_Line_Number) is
+ begin
+ while Last_Line_Printed < L loop
+ Last_Line_Printed := Last_Line_Printed + 1;
+ Write_Source_Line (Last_Line_Printed);
+ end loop;
+ end Write_Source_Lines;
+
--------------------
-- Write_Str_Sloc --
--------------------
if Int (S'Last) + Column > Line_Limit then
Write_Indent_Str (" ");
- if S (1) = ' ' then
- Write_Str (S (2 .. S'Length));
+ if S (S'First) = ' ' then
+ Write_Str (S (S'First + 1 .. S'Last));
else
Write_Str (S);
end if;
if Int (S'Last) + Column > Line_Limit then
Write_Indent_Str (" ");
- if S (1) = ' ' then
- Write_Str_Sloc (S (2 .. S'Length));
+ if S (S'First) = ' ' then
+ Write_Str_Sloc (S (S'First + 1 .. S'Last));
else
Write_Str_Sloc (S);
end if;
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