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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/ada/impunit.ads | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/ada/impunit.ads')
-rw-r--r-- | gcc-4.9/gcc/ada/impunit.ads | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/ada/impunit.ads b/gcc-4.9/gcc/ada/impunit.ads new file mode 100644 index 000000000..be3e8d3c0 --- /dev/null +++ b/gcc-4.9/gcc/ada/impunit.ads @@ -0,0 +1,86 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- I M P U N I T -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 2000-2011, 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 data and functions used to determine if a given unit +-- is an internal unit intended only for use by the implementation and which +-- should not be directly WITH'ed by user code. It also checks for Ada 2005 +-- units that should only be WITH'ed in Ada 2005 mode, and Ada 2012 units +-- that should only be WITH'ed in Ada 2012 mode. + +with Types; use Types; + +package Impunit is + + type Kind_Of_Unit is + (Implementation_Unit, + -- Unit from predefined library intended to be used only by the compiler + -- generated code, or from the implementation of the run time. Use of + -- such a unit generates a warning unless the client is compiled with + -- the -gnatg switch. If we are being super strict, this should be an + -- error for the case of Ada units, but that seems over strenuous. + + Not_Predefined_Unit, + -- This is not a predefined unit, so no checks are needed + + Ada_95_Unit, + -- This unit is defined in the Ada 95 RM, and can be freely with'ed in + -- both Ada 95 mode and Ada 05 mode. Note that in Ada 83 mode, no child + -- units are allowed, so you can't even name such a unit. + + Ada_2005_Unit, + -- This unit is defined in the Ada 2005 RM. Withing this unit from an + -- Ada 95 mode program will generate a warning (again, strictly speaking + -- this should be an error, but that seems over-strenuous). + + Ada_2012_Unit); + -- This unit is defined in the Ada 2012 RM. Withing this unit from an + -- Ada 95 or 2005 mode program will generate a warning (again, strictly + -- speaking this should be an error, but that seems over-strenuous). + + function Get_Kind_Of_Unit (U : Unit_Number_Type) return Kind_Of_Unit; + -- Given the unit number of a unit, this function determines the type + -- of the unit, as defined above. If the result is Implementation_Unit, + -- then the name of a possible atlernative equivalent unit is placed in + -- Error_Msg_String/Slen on return. If there is no alternative name, or if + -- the result is not Implementation_Unit, then Error_Msg_Slen is zero on + -- return, indicating that no alternative name was found. + + function Is_Known_Unit (Nam : Node_Id) return Boolean; + -- Nam is the possible name of a child unit, represented as a selected + -- component node. This function determines whether the name matches one of + -- the known library units, and if so, returns True. If the name does not + -- match any known library unit, False is returned. + + function Not_Impl_Defined_Unit (U : Unit_Number_Type) return Boolean; + -- This function returns True if U represents a unit that is permitted by + -- the restriction No_Implementation_Units (i.e. a unit in the Ada, System, + -- and Interfaces hierarchies that is defined in the RM, or a user defined + -- unit. It returns False if U represents a unit that is not permitted by + -- this restriction, which includes units in these three hierarchies that + -- are GNAT implementation defined. It also returns False for any units in + -- the GNAT hierarchy, which is not strictly conforming, but so obviously + -- useful that it is a reasonable deviation from the standard. + +end Impunit; |