1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- C A S I N G -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2014, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32with Types; use Types; 33 34package Casing is 35 36 -- This package contains data and subprograms to support the feature that 37 -- recognizes the letter case styles used in the source program being 38 -- compiled, and uses this information for error message formatting, and 39 -- for recognizing reserved words that are misused as identifiers. 40 41 ------------------------------- 42 -- Case Control Declarations -- 43 ------------------------------- 44 45 -- Declaration of type for describing casing convention 46 47 type Casing_Type is ( 48 49 All_Upper_Case, 50 -- All letters are upper case 51 52 All_Lower_Case, 53 -- All letters are lower case 54 55 Mixed_Case, 56 -- The initial letter, and any letters after underlines are upper case. 57 -- All other letters are lower case 58 59 Unknown 60 -- Used if an identifier does not distinguish between the above cases, 61 -- (e.g. X, Y_3, M4, A_B, or if it is inconsistent ABC_def). 62 ); 63 64 subtype Known_Casing is Casing_Type range All_Upper_Case .. Mixed_Case; 65 -- Exclude Unknown casing 66 67 ------------------------------ 68 -- Case Control Subprograms -- 69 ------------------------------ 70 71 procedure Set_Casing (C : Casing_Type; D : Casing_Type := Mixed_Case); 72 -- Takes the name stored in the first Name_Len positions of Name_Buffer 73 -- and modifies it to be consistent with the casing given by C, or if 74 -- C = Unknown, then with the casing given by D. The name is basically 75 -- treated as an identifier, except that special separator characters 76 -- other than underline are permitted and treated like underlines (this 77 -- handles cases like minus and period in unit names, apostrophes in error 78 -- messages, angle brackets in names like <any_type>, etc). 79 80 procedure Set_All_Upper_Case; 81 pragma Inline (Set_All_Upper_Case); 82 -- This procedure is called with an identifier name stored in Name_Buffer. 83 -- On return, the identifier is converted to all upper case. The call is 84 -- equivalent to Set_Casing (All_Upper_Case). 85 86 function Determine_Casing (Ident : Text_Buffer) return Casing_Type; 87 -- Determines the casing of the identifier/keyword string Ident. A special 88 -- test is made for SPARK_Mode which is considered to be mixed case, since 89 -- this gives a better general behavior. 90 91end Casing; 92