X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=gcc%2Fada%2Fstyle.adb;fp=gcc%2Fada%2Fstyle.adb;h=0000000000000000000000000000000000000000;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=4fde614c68415e45eca1bfed3bbf2f1283a6f848;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gcc/ada/style.adb b/gcc/ada/style.adb deleted file mode 100644 index 4fde614c..00000000 --- a/gcc/ada/style.adb +++ /dev/null @@ -1,854 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- S T Y L E -- --- -- --- B o d y -- --- -- --- $Revision: 1.2.10.1 $ --- -- --- Copyright (C) 1992-2001 Free Software Foundation, Inc. -- --- -- --- GNAT is free software; you can redistribute it and/or modify it under -- --- terms of the GNU General Public License as published by the Free Soft- -- --- ware Foundation; either version 2, or (at your option) any later ver- -- --- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- --- OUT 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 distributed with GNAT; see file COPYING. If not, write -- --- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- --- MA 02111-1307, USA. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - --- This version of the Style package implements the standard GNAT style --- checking rules. For documentation of these rules, see comments on the --- individual procedures. - -with Atree; use Atree; -with Casing; use Casing; -with Csets; use Csets; -with Einfo; use Einfo; -with Errout; use Errout; -with Namet; use Namet; -with Opt; use Opt; -with Scn; use Scn; -with Scans; use Scans; -with Sinfo; use Sinfo; -with Sinput; use Sinput; -with Stand; use Stand; -with Stylesw; use Stylesw; - -package body Style is - - ----------------------- - -- Local Subprograms -- - ----------------------- - - procedure Error_Space_Not_Allowed (S : Source_Ptr); - -- Posts an error message indicating that a space is not allowed - -- at the given source location. - - procedure Error_Space_Required (S : Source_Ptr); - -- Posts an error message indicating that a space is required at - -- the given source location. - - procedure Require_Following_Space; - pragma Inline (Require_Following_Space); - -- Require token to be followed by white space. Used only if in GNAT - -- style checking mode. - - procedure Require_Preceding_Space; - pragma Inline (Require_Preceding_Space); - -- Require token to be preceded by white space. Used only if in GNAT - -- style checking mode. - - ----------------------- - -- Body_With_No_Spec -- - ----------------------- - - -- If the check specs mode (-gnatys) is set, then all subprograms must - -- have specs unless they are parameterless procedures that are not child - -- units at the library level (i.e. they are possible main programs). - - procedure Body_With_No_Spec (N : Node_Id) is - begin - if Style_Check_Specs then - if Nkind (Parent (N)) = N_Compilation_Unit then - declare - Spec : constant Node_Id := Specification (N); - Defnm : constant Node_Id := Defining_Unit_Name (Spec); - - begin - if Nkind (Spec) = N_Procedure_Specification - and then Nkind (Defnm) = N_Defining_Identifier - and then No (First_Formal (Defnm)) - then - return; - end if; - end; - end if; - - Error_Msg_N ("(style): subprogram body has no previous spec", N); - end if; - end Body_With_No_Spec; - - ---------------------- - -- Check_Abs_Or_Not -- - ---------------------- - - -- In check tokens mode (-gnatyt), ABS/NOT must be followed by a space - - procedure Check_Abs_Not is - begin - if Style_Check_Tokens then - if Source (Scan_Ptr) > ' ' then - Error_Space_Required (Scan_Ptr); - end if; - end if; - end Check_Abs_Not; - - ----------------- - -- Check_Arrow -- - ----------------- - - -- In check tokens mode (-gnatys), arrow must be surrounded by spaces - - procedure Check_Arrow is - begin - if Style_Check_Tokens then - Require_Preceding_Space; - Require_Following_Space; - end if; - end Check_Arrow; - - -------------------------- - -- Check_Attribute_Name -- - -------------------------- - - -- In check attribute casing mode (-gnatya), attribute names must be - -- mixed case, i.e. start with an upper case letter, and otherwise - -- lower case, except after an underline character. - - procedure Check_Attribute_Name (Reserved : Boolean) is - begin - if Style_Check_Attribute_Casing then - if Determine_Token_Casing /= Mixed_Case then - Error_Msg_SC ("(style) bad capitalization, mixed case required"); - end if; - end if; - end Check_Attribute_Name; - - --------------------------- - -- Check_Binary_Operator -- - --------------------------- - - -- In check token mode (-gnatyt), binary operators other than the special - -- case of exponentiation require surrounding space characters. - - procedure Check_Binary_Operator is - begin - if Style_Check_Tokens then - Require_Preceding_Space; - Require_Following_Space; - end if; - end Check_Binary_Operator; - - --------------- - -- Check_Box -- - --------------- - - -- In check token mode (-gnatyt), box must be preceded by a space or by - -- a left parenthesis. Spacing checking on the surrounding tokens takes - -- care of the remaining checks. - - procedure Check_Box is - begin - if Style_Check_Tokens then - if Prev_Token /= Tok_Left_Paren then - Require_Preceding_Space; - end if; - end if; - end Check_Box; - - ----------------- - -- Check_Colon -- - ----------------- - - -- In check token mode (-gnatyt), colon must be surrounded by spaces - - procedure Check_Colon is - begin - if Style_Check_Tokens then - Require_Preceding_Space; - Require_Following_Space; - end if; - end Check_Colon; - - ----------------------- - -- Check_Colon_Equal -- - ----------------------- - - -- In check token mode (-gnatyt), := must be surrounded by spaces - - procedure Check_Colon_Equal is - begin - if Style_Check_Tokens then - Require_Preceding_Space; - Require_Following_Space; - end if; - end Check_Colon_Equal; - - ----------------- - -- Check_Comma -- - ----------------- - - -- In check token mode (-gnatyt), comma must be either the first - -- token on a line, or be preceded by a non-blank character. - -- It must also always be followed by a blank. - - procedure Check_Comma is - begin - if Style_Check_Tokens then - if Token_Ptr > First_Non_Blank_Location - and then Source (Token_Ptr - 1) = ' ' - then - Error_Space_Not_Allowed (Token_Ptr - 1); - end if; - - if Source (Scan_Ptr) > ' ' then - Error_Space_Required (Scan_Ptr); - end if; - end if; - end Check_Comma; - - ------------------- - -- Check_Comment -- - ------------------- - - -- In check comment mode (-gnatyc) there are several requirements on the - -- format of comments. The following are permissible comment formats: - - -- 1. Any comment that is not at the start of a line, i.e. where the - -- initial minuses are not the first non-blank characters on the - -- line must have at least one blank after the second minus. - - -- 2. A row of all minuses of any length is permitted (see procedure - -- box above in the source of this routine). - - -- 3. A comment line starting with two minuses and a space, and ending - -- with a space and two minuses. Again see the procedure title box - -- immediately above in the source. - - -- 4. A full line comment where two spaces follow the two minus signs. - -- This is the normal comment format in GNAT style, as typified by - -- the comments you are reading now. - - -- 5. A full line comment where the first character after the second - -- minus is a special character, i.e. a character in the ASCII - -- range 16#21#..16#2F# or 16#3A#..16#3F#. This allows special - -- comments, such as those generated by gnatprep, or those that - -- appear in the SPARK annotation language to be accepted. - - procedure Check_Comment is - S : Source_Ptr; - C : Character; - - begin - -- Can never have a non-blank character preceding the first minus - - if Style_Check_Comments then - if Scan_Ptr > Source_First (Current_Source_File) - and then Source (Scan_Ptr - 1) > ' ' - then - Error_Msg_S ("(style) space required"); - end if; - end if; - - -- For a comment that is not at the start of the line, the only - -- requirement is that we cannot have a non-blank character after - -- the second minus sign. - - if Scan_Ptr /= First_Non_Blank_Location then - if Style_Check_Comments then - if Source (Scan_Ptr + 2) > ' ' then - Error_Msg ("(style) space required", Scan_Ptr + 2); - end if; - end if; - - return; - - -- Case of a comment that is at the start of a line - - else - -- First check, must be in appropriately indented column - - if Style_Check_Indentation /= 0 then - if Start_Column rem Style_Check_Indentation /= 0 then - Error_Msg_S ("(style) bad column"); - return; - end if; - end if; - - -- Now check form of the comment - - if not Style_Check_Comments then - return; - - -- Case of not followed by a blank. Usually wrong, but there are - -- some exceptions that we permit. - - elsif Source (Scan_Ptr + 2) /= ' ' then - C := Source (Scan_Ptr + 2); - - -- Case of -- all on its own on a line is OK - - if C < ' ' then - return; - - -- Case of --x, x special character is OK (gnatprep/SPARK/etc.) - - elsif Character'Pos (C) in 16#21# .. 16#2F# - or else - Character'Pos (C) in 16#3A# .. 16#3F# - then - return; - - -- Otherwise only cases allowed are when the entire line is - -- made up of minus signs (case of a box comment). - - else - S := Scan_Ptr + 2; - - while Source (S) >= ' ' loop - if Source (S) /= '-' then - Error_Space_Required (Scan_Ptr + 2); - return; - end if; - - S := S + 1; - end loop; - end if; - - -- If we are followed by a blank, then the comment is OK if the - -- character following this blank is another blank or a format - -- effector. - - elsif Source (Scan_Ptr + 3) <= ' ' then - return; - - -- Here is the case where we only have one blank after the two minus - -- signs, which is an error unless the line ends with two blanks, the - -- case of a box comment. - - else - S := Scan_Ptr + 3; - - while Source (S) not in Line_Terminator loop - S := S + 1; - end loop; - - if Source (S - 1) /= '-' or else Source (S - 2) /= '-' then - Error_Space_Required (Scan_Ptr + 3); - end if; - end if; - end if; - end Check_Comment; - - ------------------- - -- Check_Dot_Dot -- - ------------------- - - -- In check token mode (-gnatyt), colon must be surrounded by spaces - - procedure Check_Dot_Dot is - begin - if Style_Check_Tokens then - Require_Preceding_Space; - Require_Following_Space; - end if; - end Check_Dot_Dot; - - ----------------------------------- - -- Check_Exponentiation_Operator -- - ----------------------------------- - - -- No spaces are required for the ** operator in GNAT style check mode - - procedure Check_Exponentiation_Operator is - begin - null; - end Check_Exponentiation_Operator; - - -------------- - -- Check_HT -- - -------------- - - -- In check horizontal tab mode (-gnatyh), tab characters are not allowed - - procedure Check_HT is - begin - if Style_Check_Horizontal_Tabs then - Error_Msg_S ("(style) horizontal tab not allowed"); - end if; - end Check_HT; - - ---------------------- - -- Check_Identifier -- - ---------------------- - - -- In check references mode (-gnatyr), identifier uses must be cased - -- the same way as the corresponding identifier declaration. - - procedure Check_Identifier - (Ref : Node_Or_Entity_Id; - Def : Node_Or_Entity_Id) - is - Sref : Source_Ptr := Sloc (Ref); - Sdef : Source_Ptr := Sloc (Def); - Tref : Source_Buffer_Ptr; - Tdef : Source_Buffer_Ptr; - Nlen : Nat; - Cas : Casing_Type; - - begin - -- If reference does not come from source, nothing to check - - if not Comes_From_Source (Ref) then - return; - - -- Case of definition comes from source - - elsif Comes_From_Source (Def) then - - -- Check same casing if we are checking references - - if Style_Check_References then - Tref := Source_Text (Get_Source_File_Index (Sref)); - Tdef := Source_Text (Get_Source_File_Index (Sdef)); - - -- Ignore operator name case completely. This also catches the - -- case of where one is an operator and the other is not. This - -- is a phenomenon from rewriting of operators as functions, - -- and is to be ignored. - - if Tref (Sref) = '"' or else Tdef (Sdef) = '"' then - return; - - else - while Tref (Sref) = Tdef (Sdef) loop - - -- If end of identifier, all done - - if not Identifier_Char (Tref (Sref)) then - return; - - -- Otherwise loop continues - - else - Sref := Sref + 1; - Sdef := Sdef + 1; - end if; - end loop; - - -- Fall through loop when mismatch between identifiers - -- If either identifier is not terminated, error. - - if Identifier_Char (Tref (Sref)) - or else - Identifier_Char (Tdef (Sdef)) - then - Error_Msg_Node_1 := Def; - Error_Msg_Sloc := Sloc (Def); - Error_Msg - ("(style) bad casing of & declared#", Sref); - return; - - -- Else end of identifiers, and they match - - else - return; - end if; - end if; - end if; - - -- Case of definition in package Standard - - elsif Sdef = Standard_Location then - - -- Check case of identifiers in Standard - - if Style_Check_Standard then - Tref := Source_Text (Get_Source_File_Index (Sref)); - - -- Ignore operators - - if Tref (Sref) = '"' then - null; - - -- Special case of ASCII - - else - if Entity (Ref) = Standard_ASCII then - Cas := All_Upper_Case; - - elsif Entity (Ref) in SE (S_LC_A) .. SE (S_LC_Z) - or else - Entity (Ref) in SE (S_NUL) .. SE (S_US) - or else - Entity (Ref) = SE (S_DEL) - then - Cas := All_Upper_Case; - - else - Cas := Mixed_Case; - end if; - - Nlen := Length_Of_Name (Chars (Ref)); - - if Determine_Casing - (Tref (Sref .. Sref + Source_Ptr (Nlen) - 1)) = Cas - then - null; - else - Error_Msg_N - ("(style) bad casing for entity in Standard", Ref); - end if; - end if; - end if; - end if; - end Check_Identifier; - - ----------------------- - -- Check_Indentation -- - ----------------------- - - -- In check indentation mode (-gnatyn for n a digit), a new statement or - -- declaration is required to start in a column that is a multiple of the - -- indentiation amount. - - procedure Check_Indentation is - begin - if Style_Check_Indentation /= 0 then - if Token_Ptr = First_Non_Blank_Location - and then Start_Column rem Style_Check_Indentation /= 0 - then - Error_Msg_SC ("(style) bad indentation"); - end if; - end if; - end Check_Indentation; - - ---------------------- - -- Check_Left_Paren -- - ---------------------- - - -- In tone check mode (-gnatyt), left paren must not be preceded by an - -- identifier character or digit (a separating space is required) and - -- may never be followed by a space. - - procedure Check_Left_Paren is - S : Source_Ptr; - - begin - if Style_Check_Tokens then - if Token_Ptr > Source_First (Current_Source_File) - and then Identifier_Char (Source (Token_Ptr - 1)) - then - Error_Space_Required (Token_Ptr); - end if; - - if Source (Scan_Ptr) = ' ' then - - -- Allow one or more spaces if followed by comment - - S := Scan_Ptr + 1; - loop - if Source (S) = '-' and then Source (S + 1) = '-' then - return; - elsif Source (S) /= ' ' then - exit; - else - S := S + 1; - end if; - end loop; - - Error_Space_Not_Allowed (Scan_Ptr); - end if; - end if; - end Check_Left_Paren; - - --------------------------- - -- Check_Line_Terminator -- - --------------------------- - - -- In check blanks at end mode (-gnatyb), lines may not end with a - -- trailing space. - - -- In check max line length mode (-gnatym), the line length must - -- not exceed the permitted maximum value. - - -- In check form feeds mode (-gnatyf), the line terminator may not - -- be either of the characters FF or VT. - - procedure Check_Line_Terminator (Len : Int) is - S : Source_Ptr; - - begin - -- Check FF/VT terminators - - if Style_Check_Form_Feeds then - if Source (Scan_Ptr) = ASCII.FF then - Error_Msg_S ("(style) form feed not allowed"); - - elsif Source (Scan_Ptr) = ASCII.VT then - Error_Msg_S ("(style) vertical tab not allowed"); - end if; - end if; - - -- Check trailing space - - if Style_Check_Blanks_At_End then - if Scan_Ptr >= First_Non_Blank_Location then - if Source (Scan_Ptr - 1) = ' ' then - S := Scan_Ptr - 1; - - while Source (S - 1) = ' ' loop - S := S - 1; - end loop; - - Error_Msg ("(style) trailing spaces not permitted", S); - end if; - end if; - end if; - - -- Check max line length - - if Style_Check_Max_Line_Length then - if Len > Style_Max_Line_Length then - Error_Msg - ("(style) this line is too long", - Current_Line_Start + Source_Ptr (Style_Max_Line_Length)); - end if; - end if; - - end Check_Line_Terminator; - - ----------------------- - -- Check_Pragma_Name -- - ----------------------- - - -- In check pragma casing mode (-gnatyp), pragma names must be mixed - -- case, i.e. start with an upper case letter, and otherwise lower case, - -- except after an underline character. - - procedure Check_Pragma_Name is - begin - if Style_Check_Pragma_Casing then - if Determine_Token_Casing /= Mixed_Case then - Error_Msg_SC ("(style) bad capitalization, mixed case required"); - end if; - end if; - end Check_Pragma_Name; - - ----------------------- - -- Check_Right_Paren -- - ----------------------- - - -- In check tokens mode (-gnatyt), right paren must never be preceded by - -- a space unless it is the initial non-blank character on the line. - - procedure Check_Right_Paren is - begin - if Style_Check_Tokens then - if Token_Ptr > First_Non_Blank_Location - and then Source (Token_Ptr - 1) = ' ' - then - Error_Space_Not_Allowed (Token_Ptr - 1); - end if; - end if; - end Check_Right_Paren; - - --------------------- - -- Check_Semicolon -- - --------------------- - - -- In check tokens mode (-gnatyt), semicolon does not permit a preceding - -- space and a following space is required. - - procedure Check_Semicolon is - begin - if Style_Check_Tokens then - if Scan_Ptr > Source_First (Current_Source_File) - and then Source (Token_Ptr - 1) = ' ' - then - Error_Space_Not_Allowed (Token_Ptr - 1); - - elsif Source (Scan_Ptr) > ' ' then - Error_Space_Required (Scan_Ptr); - end if; - end if; - end Check_Semicolon; - - ---------------- - -- Check_Then -- - ---------------- - - -- In check if then layout mode (-gnatyi), we expect a THEN keyword - -- to appear either on the same line as the IF, or on a separate line - -- after multiple conditions. In any case, it may not appear on the - -- line immediately following the line with the IF. - - procedure Check_Then (If_Loc : Source_Ptr) is - begin - if Style_Check_If_Then_Layout then - if Get_Physical_Line_Number (Token_Ptr) = - Get_Physical_Line_Number (If_Loc) + 1 - then - Error_Msg_SC ("(style) misplaced THEN"); - end if; - end if; - end Check_Then; - - ------------------------------- - -- Check_Unary_Plus_Or_Minus -- - ------------------------------- - - -- In check tokem mode (-gnatyt), unary plus or minus must not be - -- followed by a space. - - procedure Check_Unary_Plus_Or_Minus is - begin - if Style_Check_Tokens then - if Source (Scan_Ptr) = ' ' then - Error_Space_Not_Allowed (Scan_Ptr); - end if; - end if; - end Check_Unary_Plus_Or_Minus; - - ------------------------ - -- Check_Vertical_Bar -- - ------------------------ - - -- In check token mode (-gnatyt), vertical bar must be surrounded by spaces - - procedure Check_Vertical_Bar is - begin - if Style_Check_Tokens then - Require_Preceding_Space; - Require_Following_Space; - end if; - end Check_Vertical_Bar; - - ----------------------------- - -- Error_Space_Not_Allowed -- - ----------------------------- - - procedure Error_Space_Not_Allowed (S : Source_Ptr) is - begin - Error_Msg ("(style) space not allowed", S); - end Error_Space_Not_Allowed; - - -------------------------- - -- Error_Space_Required -- - -------------------------- - - procedure Error_Space_Required (S : Source_Ptr) is - begin - Error_Msg ("(style) space required", S); - end Error_Space_Required; - - ----------------- - -- No_End_Name -- - ----------------- - - -- In check end/exit labels mode (-gnatye), always require the name of - -- a subprogram or package to be present on the END, so this is an error. - - procedure No_End_Name (Name : Node_Id) is - begin - if Style_Check_End_Labels then - Error_Msg_Node_1 := Name; - Error_Msg_SP ("(style) `END &` required"); - end if; - end No_End_Name; - - ------------------ - -- No_Exit_Name -- - ------------------ - - -- In check end/exit labels mode (-gnatye), always require the name of - -- the loop to be present on the EXIT when exiting a named loop. - - procedure No_Exit_Name (Name : Node_Id) is - begin - if Style_Check_End_Labels then - Error_Msg_Node_1 := Name; - Error_Msg_SP ("(style) `EXIT &` required"); - end if; - end No_Exit_Name; - - ---------------------------- - -- Non_Lower_Case_Keyword -- - ---------------------------- - - -- In check casing mode (-gnatyk), reserved keywords must be be spelled - -- in all lower case (excluding keywords range, access, delta and digits - -- used as attribute designators). - - procedure Non_Lower_Case_Keyword is - begin - if Style_Check_Keyword_Casing then - Error_Msg_SC ("(style) reserved words must be all lower case"); - end if; - end Non_Lower_Case_Keyword; - - ----------------------------- - -- Require_Following_Space -- - ----------------------------- - - procedure Require_Following_Space is - begin - if Source (Scan_Ptr) > ' ' then - Error_Space_Required (Scan_Ptr); - end if; - end Require_Following_Space; - - ----------------------------- - -- Require_Preceding_Space -- - ----------------------------- - - procedure Require_Preceding_Space is - begin - if Token_Ptr > Source_First (Current_Source_File) - and then Source (Token_Ptr - 1) > ' ' - then - Error_Space_Required (Token_Ptr); - end if; - end Require_Preceding_Space; - - --------------------- - -- RM_Column_Check -- - --------------------- - - function RM_Column_Check return Boolean is - begin - return Style_Check and Style_Check_Layout; - end RM_Column_Check; - - ----------------------------------- - -- Subprogram_Not_In_Alpha_Order -- - ----------------------------------- - - procedure Subprogram_Not_In_Alpha_Order (Name : Node_Id) is - begin - if Style_Check_Subprogram_Order then - Error_Msg_N - ("(style) subprogram body& not in alphabetical order", Name); - end if; - end Subprogram_Not_In_Alpha_Order; -end Style;