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authorBen Cheng <bccheng@google.com>2012-10-01 10:30:31 -0700
committerBen Cheng <bccheng@google.com>2012-10-01 10:30:31 -0700
commit82bcbebce43f0227f506d75a5b764b6847041bae (patch)
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Initial check-in of gcc 4.7.2.
Change-Id: I4a2f5a921c21741a0e18bda986d77e5f1bef0365
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+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- G E T _ A L F A --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2011, 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 package contains the function used to read Alfa information from an
+-- ALI file and populate the tables defined in package Alfa with the result.
+
+generic
+ -- These subprograms provide access to the ALI file. Locating, opening and
+ -- providing access to the ALI file is the callers' responsibility.
+
+ with function Getc return Character is <>;
+ -- Get next character, positioning the ALI file ready to read the following
+ -- character (equivalent to calling Nextc, then Skipc). If the end of file
+ -- is encountered, the value Types.EOF is returned.
+
+ with function Nextc return Character is <>;
+ -- Look at the next character, and return it, leaving the position of the
+ -- file unchanged, so that a subsequent call to Getc or Nextc will return
+ -- this same character. If the file is positioned at the end of file, then
+ -- Types.EOF is returned.
+
+ with procedure Skipc is <>;
+ -- Skip past the current character (which typically was read with Nextc),
+ -- and position to the next character, which will be returned by the next
+ -- call to Getc or Nextc.
+
+procedure Get_Alfa;
+-- Load Alfa information from ALI file text format into internal Alfa tables
+-- (Alfa.Alfa_Xref_Table, Alfa.Alfa_Scope_Table and Alfa.Alfa_File_Table). On
+-- entry the input file is positioned to the initial 'F' of the first Alfa
+-- line in the ALI file. On return, the file is positioned either to the end
+-- of file, or to the first character of the line following the Alfa
+-- information (which will never start with an 'F').
+--
+-- If a format error is detected in the input, then an exception is raised
+-- (Ada.IO_Exceptions.Data_Error), with the file positioned to the error.