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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT COMPILER COMPONENTS --
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4 -- --
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5 -- C A S I N G --
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6 -- --
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7 -- S p e c --
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8 -- --
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131
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9 -- Copyright (C) 1992-2018, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 with Namet; use Namet;
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33 with Types; use Types;
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34
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35 package Casing is
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36
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37 -- This package contains data and subprograms to support the feature that
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38 -- recognizes the letter case styles used in the source program being
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39 -- compiled, and uses this information for error message formatting, and
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40 -- for recognizing reserved words that are misused as identifiers.
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41
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42 -------------------------------
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43 -- Case Control Declarations --
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44 -------------------------------
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45
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46 -- Declaration of type for describing casing convention
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47
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48 type Casing_Type is (
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49
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50 All_Upper_Case,
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51 -- All letters are upper case
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52
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53 All_Lower_Case,
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54 -- All letters are lower case
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55
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56 Mixed_Case,
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57 -- The initial letter, and any letters after underlines are upper case.
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58 -- All other letters are lower case
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59
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60 Unknown
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61 -- Used if an identifier does not distinguish between the above cases,
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62 -- (e.g. X, Y_3, M4, A_B, or if it is inconsistent ABC_def).
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63 );
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64
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65 subtype Known_Casing is Casing_Type range All_Upper_Case .. Mixed_Case;
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66 -- Exclude Unknown casing
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67
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68 ------------------------------
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69 -- Case Control Subprograms --
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70 ------------------------------
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71
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72 procedure Set_Casing
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73 (Buf : in out Bounded_String;
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74 C : Casing_Type;
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75 D : Casing_Type := Mixed_Case);
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76 -- Takes the name stored in Buf and modifies it to be consistent with the
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77 -- casing given by C, or if C = Unknown, then with the casing given by
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78 -- D. The name is basically treated as an identifier, except that special
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79 -- separator characters other than underline are permitted and treated like
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80 -- underlines (this handles cases like minus and period in unit names,
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81 -- apostrophes in error messages, angle brackets in names like <any_type>,
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82 -- etc).
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83
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84 procedure Set_Casing (C : Casing_Type; D : Casing_Type := Mixed_Case);
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85 -- Uses Buf => Global_Name_Buffer
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86
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87 procedure Set_All_Upper_Case;
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88 pragma Inline (Set_All_Upper_Case);
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89 -- This procedure is called with an identifier name stored in Name_Buffer.
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90 -- On return, the identifier is converted to all upper case. The call is
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91 -- equivalent to Set_Casing (All_Upper_Case).
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92
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93 function Determine_Casing (Ident : Text_Buffer) return Casing_Type;
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94 -- Determines the casing of the identifier/keyword string Ident. A special
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95 -- test is made for SPARK_Mode which is considered to be mixed case, since
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96 -- this gives a better general behavior.
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97
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98 end Casing;
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