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Diffstat (limited to 'gcc-4.4.3/gcc/ada/ali-util.ads')
-rw-r--r-- | gcc-4.4.3/gcc/ada/ali-util.ads | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/gcc-4.4.3/gcc/ada/ali-util.ads b/gcc-4.4.3/gcc/ada/ali-util.ads deleted file mode 100644 index d28ad40d5..000000000 --- a/gcc-4.4.3/gcc/ada/ali-util.ads +++ /dev/null @@ -1,155 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- A L I . U T I L -- --- -- --- S p e c -- --- -- --- Copyright (C) 1992-2007, 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 3, 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 COPYING3. If not, go to -- --- http://www.gnu.org/licenses for a complete copy of the license. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - --- This child unit provides utility data structures and procedures used --- for manipulation of ALI data by the gnatbind and gnatmake. - -package ALI.Util is - - ----------------------- - -- Source File Table -- - ----------------------- - - -- A source file table entry is built for every source file that is - -- in the source dependency table of any of the ALI files that make - -- up the current program. - - No_Source_Id : constant Source_Id := Source_Id'First; - -- Special value indicating no Source table entry - - First_Source_Entry : constant Source_Id := No_Source_Id + 1; - -- Id of first actual entry in table - - type Source_Record is record - - Sfile : File_Name_Type; - -- Name of source file - - Stamp : Time_Stamp_Type; - -- Time stamp value. If Check_Source_Files is set and the source - -- file is located, then Stamp is set from the source file. Otherwise - -- Stamp is set from the latest stamp value found in any of the - -- ALI files for the current program. - - Source_Found : Boolean; - -- This flag is set to True if the corresponding source file was - -- located and the Stamp value was set from the actual source file. - -- It is always false if Check_Source_Files is not set. - - All_Timestamps_Match : Boolean; - -- This flag is set only if all files referencing this source file - -- have a matching time stamp, and also, if Source_Found is True, - -- then the stamp of the source file also matches. If this flag is - -- True, then checksums for this file are never referenced. We only - -- use checksums if there are time stamp mismatches. - - All_Checksums_Match : Boolean; - -- This flag is set only if all files referencing this source file - -- have checksums, and if all these checksums match. If this flag - -- is set to True, then the binder will ignore a timestamp mismatch. - -- An absent checksum causes this flag to be set False, and a mismatch - -- of checksums also causes it to be set False. The checksum of the - -- actual source file (if Source_Found is True) is included only if - -- All_Timestamps_Match is False (since checksums are only interesting - -- if we have time stamp mismatches, and we want to avoid computing the - -- checksum of the source file if it is not needed.) - - Checksum : Word; - -- If no dependency line has a checksum for this source file (i.e. the - -- corresponding entries in the source dependency records all have the - -- Checksum_Present flag set False), then this field is undefined. If - -- at least one dependency entry has a checksum present, then this - -- field contains one of the possible checksum values that has been - -- seen. This is used to set All_Checksums_Match properly. - - end record; - - package Source is new Table.Table ( - Table_Component_Type => Source_Record, - Table_Index_Type => Source_Id, - Table_Low_Bound => First_Source_Entry, - Table_Initial => 1000, - Table_Increment => 200, - Table_Name => "Source"); - - procedure Initialize_ALI_Source; - -- Initialize Source table - - -------------------------------------------------- - -- Subprograms for Manipulating ALI Information -- - -------------------------------------------------- - - procedure Read_ALI (Id : ALI_Id); - -- Process an ALI file which has been read and scanned by looping - -- through all withed units in the ALI file, checking if they have - -- been processed. Each unit that has not yet been processed will - -- be read, scanned, and processed recursively. - - procedure Set_Source_Table (A : ALI_Id); - -- Build source table entry corresponding to the ALI file whose id is A - - procedure Set_Source_Table; - -- Build the entire source table - - function Time_Stamp_Mismatch - (A : ALI_Id; - Read_Only : Boolean := False) return File_Name_Type; - -- Looks in the Source_Table and checks time stamp mismatches between - -- the sources there and the sources in the Sdep section of ali file whose - -- id is A. If no time stamp mismatches are found No_File is returned. - -- Otherwise return the first file for which there is a mismatch. - -- Note that in check source files mode (Check_Source_Files = True), the - -- time stamp in the Source_Table should be the actual time stamp of the - -- source files. In minimal recompilation mode (Minimal_Recompilation set - -- to True, no mismatch is found if the file's timestamp has not changed. - -- If Read_Only is True, missing sources are not considered. - - -------------------------------------------- - -- Subprograms for manipulating checksums -- - -------------------------------------------- - - Checksum_Error : constant Word := 16#FFFF_FFFF#; - -- This value is used to indicate an error in computing the checksum. - -- When comparing checksums for smart recompilation, the CRC_Error - -- value is never considered to match. This could possibly result - -- in a false negative, but that is never harmful, it just means - -- that in unusual cases an unnecessary recompilation occurs. - - function Get_File_Checksum (Fname : File_Name_Type) return Word; - -- Compute checksum for the given file. As far as possible, this circuit - -- computes exactly the same value computed by the compiler, but it does - -- not matter if it gets it wrong in marginal cases, since the only result - -- is to miss some smart recompilation cases, correct functioning is not - -- affected by a miscomputation. Returns Checksum_Error if the file is - -- missing or has an error. - - function Checksums_Match (Checksum1, Checksum2 : Word) return Boolean; - pragma Inline (Checksums_Match); - -- Returns True if Checksum1 and Checksum2 have the same value and are - -- not equal to Checksum_Error, returns False in all other cases. This - -- routine must always be used to compare for checksum equality, to - -- ensure that the case of Checksum_Error is handled properly. - -end ALI.Util; |