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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 -- P A R . P R A G --
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6 -- --
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7 -- B o d y --
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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. See the GNU General Public License --
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17 -- for more details. You should have received a copy of the GNU General --
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18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
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19 -- http://www.gnu.org/licenses for a complete copy of the license. --
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20 -- --
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21 -- GNAT was originally developed by the GNAT team at New York University. --
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22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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23 -- --
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24 ------------------------------------------------------------------------------
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25
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26 -- Generally the parser checks the basic syntax of pragmas, but does not
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27 -- do specialized syntax checks for individual pragmas, these are deferred
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28 -- to semantic analysis time (see unit Sem_Prag). There are some pragmas
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29 -- which require recognition and either partial or complete processing
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30 -- during parsing, and this unit performs this required processing.
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31
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32 with Fname.UF; use Fname.UF;
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33 with Osint; use Osint;
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34 with Rident; use Rident;
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35 with Restrict; use Restrict;
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36 with Stringt; use Stringt;
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37 with Stylesw; use Stylesw;
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38 with Uintp; use Uintp;
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39 with Uname; use Uname;
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40
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41 with System.WCh_Con; use System.WCh_Con;
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42
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43 separate (Par)
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44
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45 function Prag (Pragma_Node : Node_Id; Semi : Source_Ptr) return Node_Id is
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46 Prag_Name : constant Name_Id := Pragma_Name_Unmapped (Pragma_Node);
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47 Prag_Id : constant Pragma_Id := Get_Pragma_Id (Prag_Name);
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48 Pragma_Sloc : constant Source_Ptr := Sloc (Pragma_Node);
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49 Arg_Count : Nat;
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50 Arg_Node : Node_Id;
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51
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52 -----------------------
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53 -- Local Subprograms --
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54 -----------------------
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55
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56 procedure Add_List_Pragma_Entry (PT : List_Pragma_Type; Loc : Source_Ptr);
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57 -- Make a new entry in the List_Pragmas table if this entry is not already
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58 -- in the table (it will always be the last one if there is a duplication
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59 -- resulting from the use of Save/Restore_Scan_State).
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60
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61 function Arg1 return Node_Id;
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62 function Arg2 return Node_Id;
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63 function Arg3 return Node_Id;
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64 -- Obtain specified Pragma_Argument_Association. It is allowable to call
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65 -- the routine for the argument one past the last present argument, but
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66 -- that is the only case in which a non-present argument can be referenced.
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67
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68 procedure Check_Arg_Count (Required : Int);
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69 -- Check argument count for pragma = Required. If not give error and raise
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70 -- Error_Resync.
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71
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72 procedure Check_Arg_Is_String_Literal (Arg : Node_Id);
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73 -- Check the expression of the specified argument to make sure that it
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74 -- is a string literal. If not give error and raise Error_Resync.
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75
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76 procedure Check_Arg_Is_On_Or_Off (Arg : Node_Id);
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77 -- Check the expression of the specified argument to make sure that it
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78 -- is an identifier which is either ON or OFF, and if not, then issue
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79 -- an error message and raise Error_Resync.
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80
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81 procedure Check_No_Identifier (Arg : Node_Id);
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82 -- Checks that the given argument does not have an identifier. If
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83 -- an identifier is present, then an error message is issued, and
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84 -- Error_Resync is raised.
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85
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86 procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id);
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87 -- Checks if the given argument has an identifier, and if so, requires
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88 -- it to match the given identifier name. If there is a non-matching
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89 -- identifier, then an error message is given and Error_Resync raised.
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90
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91 procedure Check_Required_Identifier (Arg : Node_Id; Id : Name_Id);
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92 -- Same as Check_Optional_Identifier, except that the name is required
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93 -- to be present and to match the given Id value.
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94
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95 procedure Process_Restrictions_Or_Restriction_Warnings;
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96 -- Common processing for Restrictions and Restriction_Warnings pragmas.
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97 -- For the most part, restrictions need not be processed at parse time,
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98 -- since they only affect semantic processing. This routine handles the
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99 -- exceptions as follows
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100 --
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101 -- No_Obsolescent_Features must be processed at parse time, since there
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102 -- are some obsolescent features (e.g. character replacements) which are
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103 -- handled at parse time.
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104 --
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105 -- SPARK must be processed at parse time, since this restriction controls
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106 -- whether the scanner recognizes a spark HIDE directive formatted as an
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107 -- Ada comment (and generates a Tok_SPARK_Hide token for the directive).
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108 --
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109 -- No_Dependence must be processed at parse time, since otherwise it gets
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110 -- handled too late.
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111 --
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112 -- Note that we don't need to do full error checking for badly formed cases
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113 -- of restrictions, since these will be caught during semantic analysis.
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114
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115 ---------------------------
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116 -- Add_List_Pragma_Entry --
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117 ---------------------------
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118
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119 procedure Add_List_Pragma_Entry (PT : List_Pragma_Type; Loc : Source_Ptr) is
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120 begin
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121 if List_Pragmas.Last < List_Pragmas.First
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122 or else (List_Pragmas.Table (List_Pragmas.Last)) /= ((PT, Loc))
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123 then
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124 List_Pragmas.Append ((PT, Loc));
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125 end if;
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126 end Add_List_Pragma_Entry;
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127
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128 ----------
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129 -- Arg1 --
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130 ----------
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131
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132 function Arg1 return Node_Id is
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133 begin
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134 return First (Pragma_Argument_Associations (Pragma_Node));
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135 end Arg1;
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136
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137 ----------
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138 -- Arg2 --
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139 ----------
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140
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141 function Arg2 return Node_Id is
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142 begin
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143 return Next (Arg1);
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144 end Arg2;
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145
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146 ----------
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147 -- Arg3 --
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148 ----------
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149
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150 function Arg3 return Node_Id is
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151 begin
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152 return Next (Arg2);
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153 end Arg3;
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154
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155 ---------------------
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156 -- Check_Arg_Count --
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157 ---------------------
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158
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159 procedure Check_Arg_Count (Required : Int) is
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160 begin
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161 if Arg_Count /= Required then
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162 Error_Msg ("wrong number of arguments for pragma%", Pragma_Sloc);
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163 raise Error_Resync;
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164 end if;
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165 end Check_Arg_Count;
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166
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167 ----------------------------
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168 -- Check_Arg_Is_On_Or_Off --
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169 ----------------------------
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170
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171 procedure Check_Arg_Is_On_Or_Off (Arg : Node_Id) is
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172 Argx : constant Node_Id := Expression (Arg);
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173
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174 begin
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175 if Nkind (Expression (Arg)) /= N_Identifier
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176 or else not Nam_In (Chars (Argx), Name_On, Name_Off)
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177 then
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178 Error_Msg_Name_2 := Name_On;
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179 Error_Msg_Name_3 := Name_Off;
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180
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181 Error_Msg ("argument for pragma% must be% or%", Sloc (Argx));
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182 raise Error_Resync;
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183 end if;
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184 end Check_Arg_Is_On_Or_Off;
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185
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186 ---------------------------------
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187 -- Check_Arg_Is_String_Literal --
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188 ---------------------------------
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189
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190 procedure Check_Arg_Is_String_Literal (Arg : Node_Id) is
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191 begin
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192 if Nkind (Expression (Arg)) /= N_String_Literal then
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193 Error_Msg
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194 ("argument for pragma% must be string literal",
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195 Sloc (Expression (Arg)));
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196 raise Error_Resync;
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197 end if;
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198 end Check_Arg_Is_String_Literal;
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199
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200 -------------------------
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201 -- Check_No_Identifier --
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202 -------------------------
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203
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204 procedure Check_No_Identifier (Arg : Node_Id) is
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205 begin
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206 if Chars (Arg) /= No_Name then
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207 Error_Msg_N ("pragma% does not permit named arguments", Arg);
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208 raise Error_Resync;
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209 end if;
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210 end Check_No_Identifier;
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211
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212 -------------------------------
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213 -- Check_Optional_Identifier --
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214 -------------------------------
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215
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216 procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id) is
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217 begin
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218 if Present (Arg) and then Chars (Arg) /= No_Name then
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219 if Chars (Arg) /= Id then
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220 Error_Msg_Name_2 := Id;
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221 Error_Msg_N ("pragma% argument expects identifier%", Arg);
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222 end if;
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223 end if;
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224 end Check_Optional_Identifier;
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225
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226 -------------------------------
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227 -- Check_Required_Identifier --
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228 -------------------------------
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229
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230 procedure Check_Required_Identifier (Arg : Node_Id; Id : Name_Id) is
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231 begin
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232 if Chars (Arg) /= Id then
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233 Error_Msg_Name_2 := Id;
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234 Error_Msg_N ("pragma% argument must have identifier%", Arg);
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235 end if;
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236 end Check_Required_Identifier;
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237
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238 --------------------------------------------------
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239 -- Process_Restrictions_Or_Restriction_Warnings --
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240 --------------------------------------------------
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241
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242 procedure Process_Restrictions_Or_Restriction_Warnings is
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243 Arg : Node_Id;
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244 Id : Name_Id;
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245 Expr : Node_Id;
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246
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247 begin
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248 Arg := Arg1;
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249 while Present (Arg) loop
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250 Id := Chars (Arg);
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251 Expr := Expression (Arg);
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252
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253 if Id = No_Name and then Nkind (Expr) = N_Identifier then
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254 case Chars (Expr) is
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255 when Name_No_Obsolescent_Features =>
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256 Set_Restriction (No_Obsolescent_Features, Pragma_Node);
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257 Restriction_Warnings (No_Obsolescent_Features) :=
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258 Prag_Id = Pragma_Restriction_Warnings;
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259
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260 when Name_SPARK
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261 | Name_SPARK_05
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262 =>
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263 Set_Restriction (SPARK_05, Pragma_Node);
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264 Restriction_Warnings (SPARK_05) :=
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265 Prag_Id = Pragma_Restriction_Warnings;
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266
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267 when others =>
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268 null;
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269 end case;
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270
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271 elsif Id = Name_No_Dependence then
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272 Set_Restriction_No_Dependence
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273 (Unit => Expr,
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274 Warn => Prag_Id = Pragma_Restriction_Warnings
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275 or else Treat_Restrictions_As_Warnings);
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276 end if;
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277
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278 Next (Arg);
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279 end loop;
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280 end Process_Restrictions_Or_Restriction_Warnings;
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281
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282 -- Start of processing for Prag
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283
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284 begin
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285 Error_Msg_Name_1 := Prag_Name;
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286
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287 -- Ignore unrecognized pragma. We let Sem post the warning for this, since
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288 -- it is a semantic error, not a syntactic one (we have already checked
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289 -- the syntax for the unrecognized pragma as required by (RM 2.8(11)).
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290
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291 if Prag_Id = Unknown_Pragma then
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292 return Pragma_Node;
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293 end if;
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294
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295 -- Ignore pragma if Ignore_Pragma applies. Also ignore pragma
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296 -- Default_Scalar_Storage_Order if the -gnatI switch was given.
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297
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298 if Should_Ignore_Pragma_Par (Prag_Name)
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299 or else (Prag_Id = Pragma_Default_Scalar_Storage_Order
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300 and then Ignore_Rep_Clauses)
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301 then
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302 return Pragma_Node;
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303 end if;
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304
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305 -- Count number of arguments. This loop also checks if any of the arguments
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306 -- are Error, indicating a syntax error as they were parsed. If so, we
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307 -- simply return, because we get into trouble with cascaded errors if we
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308 -- try to perform our error checks on junk arguments.
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309
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310 Arg_Count := 0;
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311
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312 if Present (Pragma_Argument_Associations (Pragma_Node)) then
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313 Arg_Node := Arg1;
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314 while Arg_Node /= Empty loop
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315 Arg_Count := Arg_Count + 1;
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316
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317 if Expression (Arg_Node) = Error then
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318 return Error;
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319 end if;
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320
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321 Next (Arg_Node);
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322 end loop;
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323 end if;
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324
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325 -- Remaining processing is pragma dependent
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326
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327 case Prag_Id is
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328
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329 -- Ada version pragmas must be processed at parse time, because we want
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330 -- to set the Ada version properly at parse time to recognize the
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331 -- appropriate Ada version syntax. However, pragma Ada_2005 and higher
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332 -- have an optional argument; it is only the zero argument form that
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333 -- must be processed at parse time.
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334
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335 ------------
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336 -- Ada_83 --
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337 ------------
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338
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339 when Pragma_Ada_83 =>
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340 if not Latest_Ada_Only then
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341 Ada_Version := Ada_83;
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342 Ada_Version_Explicit := Ada_83;
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343 Ada_Version_Pragma := Pragma_Node;
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344 end if;
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345
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346 ------------
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347 -- Ada_95 --
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348 ------------
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349
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350 when Pragma_Ada_95 =>
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351 if not Latest_Ada_Only then
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352 Ada_Version := Ada_95;
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353 Ada_Version_Explicit := Ada_95;
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354 Ada_Version_Pragma := Pragma_Node;
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355 end if;
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356
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357 ---------------------
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358 -- Ada_05/Ada_2005 --
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359 ---------------------
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360
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361 when Pragma_Ada_05
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362 | Pragma_Ada_2005
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363 =>
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364 if Arg_Count = 0 and not Latest_Ada_Only then
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365 Ada_Version := Ada_2005;
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366 Ada_Version_Explicit := Ada_2005;
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367 Ada_Version_Pragma := Pragma_Node;
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368 end if;
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369
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370 ---------------------
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371 -- Ada_12/Ada_2012 --
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372 ---------------------
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373
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374 when Pragma_Ada_12
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375 | Pragma_Ada_2012
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376 =>
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377 if Arg_Count = 0 then
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378 Ada_Version := Ada_2012;
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379 Ada_Version_Explicit := Ada_2012;
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380 Ada_Version_Pragma := Pragma_Node;
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381 end if;
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382
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383 --------------
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384 -- Ada_2020 --
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385 --------------
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386
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387 when Pragma_Ada_2020 =>
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388 if Arg_Count = 0 then
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389 Ada_Version := Ada_2020;
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390 Ada_Version_Explicit := Ada_2020;
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391 Ada_Version_Pragma := Pragma_Node;
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392 end if;
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393
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394 ---------------------------
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395 -- Compiler_Unit_Warning --
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396 ---------------------------
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397
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398 -- This pragma must be processed at parse time, since the resulting
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399 -- status may be tested during the parsing of the program.
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400
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401 when Pragma_Compiler_Unit
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402 | Pragma_Compiler_Unit_Warning
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403 =>
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404 Check_Arg_Count (0);
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405
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406 -- Only recognized in main unit
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407
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408 if Current_Source_Unit = Main_Unit then
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409 Compiler_Unit := True;
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410 end if;
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411
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412 -----------
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413 -- Debug --
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414 -----------
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415
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416 -- pragma Debug ([boolean_EXPRESSION,] PROCEDURE_CALL_STATEMENT);
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417
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418 when Pragma_Debug =>
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419 Check_No_Identifier (Arg1);
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420
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421 if Arg_Count = 2 then
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422 Check_No_Identifier (Arg2);
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423 else
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424 Check_Arg_Count (1);
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425 end if;
|
|
|
426
|
|
|
427 -------------------------------
|
|
|
428 -- Extensions_Allowed (GNAT) --
|
|
|
429 -------------------------------
|
|
|
430
|
|
|
431 -- pragma Extensions_Allowed (Off | On)
|
|
|
432
|
|
|
433 -- The processing for pragma Extensions_Allowed must be done at
|
|
|
434 -- parse time, since extensions mode may affect what is accepted.
|
|
|
435
|
|
|
436 when Pragma_Extensions_Allowed =>
|
|
|
437 Check_Arg_Count (1);
|
|
|
438 Check_No_Identifier (Arg1);
|
|
|
439 Check_Arg_Is_On_Or_Off (Arg1);
|
|
|
440
|
|
|
441 if Chars (Expression (Arg1)) = Name_On then
|
|
|
442 Extensions_Allowed := True;
|
|
|
443 Ada_Version := Ada_2012;
|
|
|
444 else
|
|
|
445 Extensions_Allowed := False;
|
|
|
446 Ada_Version := Ada_Version_Explicit;
|
|
|
447 end if;
|
|
|
448
|
|
|
449 -------------------
|
|
|
450 -- Ignore_Pragma --
|
|
|
451 -------------------
|
|
|
452
|
|
|
453 -- Processing for this pragma must be done at parse time, since we want
|
|
|
454 -- be able to ignore pragmas that are otherwise processed at parse time.
|
|
|
455
|
|
|
456 when Pragma_Ignore_Pragma => Ignore_Pragma : declare
|
|
|
457 A : Node_Id;
|
|
|
458
|
|
|
459 begin
|
|
|
460 Check_Arg_Count (1);
|
|
|
461 Check_No_Identifier (Arg1);
|
|
|
462 A := Expression (Arg1);
|
|
|
463
|
|
|
464 if Nkind (A) /= N_Identifier then
|
|
|
465 Error_Msg ("incorrect argument for pragma %", Sloc (A));
|
|
|
466 else
|
|
|
467 Set_Name_Table_Boolean3 (Chars (A), True);
|
|
|
468 end if;
|
|
|
469 end Ignore_Pragma;
|
|
|
470
|
|
|
471 ----------------
|
|
|
472 -- List (2.8) --
|
|
|
473 ----------------
|
|
|
474
|
|
|
475 -- pragma List (Off | On)
|
|
|
476
|
|
|
477 -- The processing for pragma List must be done at parse time, since a
|
|
|
478 -- listing can be generated in parse only mode.
|
|
|
479
|
|
|
480 when Pragma_List =>
|
|
|
481 Check_Arg_Count (1);
|
|
|
482 Check_No_Identifier (Arg1);
|
|
|
483 Check_Arg_Is_On_Or_Off (Arg1);
|
|
|
484
|
|
|
485 -- We unconditionally make a List_On entry for the pragma, so that
|
|
|
486 -- in the List (Off) case, the pragma will print even in a region
|
|
|
487 -- of code with listing turned off (this is required).
|
|
|
488
|
|
|
489 Add_List_Pragma_Entry (List_On, Sloc (Pragma_Node));
|
|
|
490
|
|
|
491 -- Now generate the list off entry for pragma List (Off)
|
|
|
492
|
|
|
493 if Chars (Expression (Arg1)) = Name_Off then
|
|
|
494 Add_List_Pragma_Entry (List_Off, Semi);
|
|
|
495 end if;
|
|
|
496
|
|
|
497 ----------------
|
|
|
498 -- Page (2.8) --
|
|
|
499 ----------------
|
|
|
500
|
|
|
501 -- pragma Page;
|
|
|
502
|
|
|
503 -- Processing for this pragma must be done at parse time, since a
|
|
|
504 -- listing can be generated in parse only mode with semantics off.
|
|
|
505
|
|
|
506 when Pragma_Page =>
|
|
|
507 Check_Arg_Count (0);
|
|
|
508 Add_List_Pragma_Entry (Page, Semi);
|
|
|
509
|
|
|
510 ------------------
|
|
|
511 -- Restrictions --
|
|
|
512 ------------------
|
|
|
513
|
|
|
514 -- pragma Restrictions (RESTRICTION {, RESTRICTION});
|
|
|
515
|
|
|
516 -- RESTRICTION ::=
|
|
|
517 -- restriction_IDENTIFIER
|
|
|
518 -- | restriction_parameter_IDENTIFIER => EXPRESSION
|
|
|
519
|
|
|
520 -- We process the case of No_Obsolescent_Features, since this has
|
|
|
521 -- a syntactic effect that we need to detect at parse time (the use
|
|
|
522 -- of replacement characters such as colon for pound sign).
|
|
|
523
|
|
|
524 when Pragma_Restrictions =>
|
|
|
525 Process_Restrictions_Or_Restriction_Warnings;
|
|
|
526
|
|
|
527 --------------------------
|
|
|
528 -- Restriction_Warnings --
|
|
|
529 --------------------------
|
|
|
530
|
|
|
531 -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
|
|
|
532
|
|
|
533 -- RESTRICTION ::=
|
|
|
534 -- restriction_IDENTIFIER
|
|
|
535 -- | restriction_parameter_IDENTIFIER => EXPRESSION
|
|
|
536
|
|
|
537 -- See above comment for pragma Restrictions
|
|
|
538
|
|
|
539 when Pragma_Restriction_Warnings =>
|
|
|
540 Process_Restrictions_Or_Restriction_Warnings;
|
|
|
541
|
|
|
542 ----------------------------------------------------------
|
|
|
543 -- Source_File_Name and Source_File_Name_Project (GNAT) --
|
|
|
544 ----------------------------------------------------------
|
|
|
545
|
|
|
546 -- These two pragmas have the same syntax and semantics.
|
|
|
547 -- There are five forms of these pragmas:
|
|
|
548
|
|
|
549 -- pragma Source_File_Name[_Project] (
|
|
|
550 -- [UNIT_NAME =>] unit_NAME,
|
|
|
551 -- BODY_FILE_NAME => STRING_LITERAL
|
|
|
552 -- [, [INDEX =>] INTEGER_LITERAL]);
|
|
|
553
|
|
|
554 -- pragma Source_File_Name[_Project] (
|
|
|
555 -- [UNIT_NAME =>] unit_NAME,
|
|
|
556 -- SPEC_FILE_NAME => STRING_LITERAL
|
|
|
557 -- [, [INDEX =>] INTEGER_LITERAL]);
|
|
|
558
|
|
|
559 -- pragma Source_File_Name[_Project] (
|
|
|
560 -- BODY_FILE_NAME => STRING_LITERAL
|
|
|
561 -- [, DOT_REPLACEMENT => STRING_LITERAL]
|
|
|
562 -- [, CASING => CASING_SPEC]);
|
|
|
563
|
|
|
564 -- pragma Source_File_Name[_Project] (
|
|
|
565 -- SPEC_FILE_NAME => STRING_LITERAL
|
|
|
566 -- [, DOT_REPLACEMENT => STRING_LITERAL]
|
|
|
567 -- [, CASING => CASING_SPEC]);
|
|
|
568
|
|
|
569 -- pragma Source_File_Name[_Project] (
|
|
|
570 -- SUBUNIT_FILE_NAME => STRING_LITERAL
|
|
|
571 -- [, DOT_REPLACEMENT => STRING_LITERAL]
|
|
|
572 -- [, CASING => CASING_SPEC]);
|
|
|
573
|
|
|
574 -- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
|
|
|
575
|
|
|
576 -- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
|
|
|
577 -- Source_File_Name (SFN), however their usage is exclusive:
|
|
|
578 -- SFN can only be used when no project file is used, while
|
|
|
579 -- SFNP can only be used when a project file is used.
|
|
|
580
|
|
|
581 -- The Project Manager produces a configuration pragmas file that
|
|
|
582 -- is communicated to the compiler with -gnatec switch. This file
|
|
|
583 -- contains only SFNP pragmas (at least two for the default naming
|
|
|
584 -- scheme. As this configuration pragmas file is always the first
|
|
|
585 -- processed by the compiler, it prevents the use of pragmas SFN in
|
|
|
586 -- other config files when a project file is in use.
|
|
|
587
|
|
|
588 -- Note: we process this during parsing, since we need to have the
|
|
|
589 -- source file names set well before the semantic analysis starts,
|
|
|
590 -- since we load the spec and with'ed packages before analysis.
|
|
|
591
|
|
|
592 when Pragma_Source_File_Name
|
|
|
593 | Pragma_Source_File_Name_Project
|
|
|
594 =>
|
|
|
595 Source_File_Name : declare
|
|
|
596 Unam : Unit_Name_Type;
|
|
|
597 Expr1 : Node_Id;
|
|
|
598 Pat : String_Ptr;
|
|
|
599 Typ : Character;
|
|
|
600 Dot : String_Ptr;
|
|
|
601 Cas : Casing_Type;
|
|
|
602 Nast : Nat;
|
|
|
603 Expr : Node_Id;
|
|
|
604 Index : Nat;
|
|
|
605
|
|
|
606 function Get_Fname (Arg : Node_Id) return File_Name_Type;
|
|
|
607 -- Process file name from unit name form of pragma
|
|
|
608
|
|
|
609 function Get_String_Argument (Arg : Node_Id) return String_Ptr;
|
|
|
610 -- Process string literal value from argument
|
|
|
611
|
|
|
612 procedure Process_Casing (Arg : Node_Id);
|
|
|
613 -- Process Casing argument of pattern form of pragma
|
|
|
614
|
|
|
615 procedure Process_Dot_Replacement (Arg : Node_Id);
|
|
|
616 -- Process Dot_Replacement argument of pattern form of pragma
|
|
|
617
|
|
|
618 ---------------
|
|
|
619 -- Get_Fname --
|
|
|
620 ---------------
|
|
|
621
|
|
|
622 function Get_Fname (Arg : Node_Id) return File_Name_Type is
|
|
|
623 begin
|
|
|
624 String_To_Name_Buffer (Strval (Expression (Arg)));
|
|
|
625
|
|
|
626 for J in 1 .. Name_Len loop
|
|
|
627 if Is_Directory_Separator (Name_Buffer (J)) then
|
|
|
628 Error_Msg
|
|
|
629 ("directory separator character not allowed",
|
|
|
630 Sloc (Expression (Arg)) + Source_Ptr (J));
|
|
|
631 end if;
|
|
|
632 end loop;
|
|
|
633
|
|
|
634 return Name_Find;
|
|
|
635 end Get_Fname;
|
|
|
636
|
|
|
637 -------------------------
|
|
|
638 -- Get_String_Argument --
|
|
|
639 -------------------------
|
|
|
640
|
|
|
641 function Get_String_Argument (Arg : Node_Id) return String_Ptr is
|
|
|
642 Str : String_Id;
|
|
|
643
|
|
|
644 begin
|
|
|
645 if Nkind (Expression (Arg)) /= N_String_Literal
|
|
|
646 and then
|
|
|
647 Nkind (Expression (Arg)) /= N_Operator_Symbol
|
|
|
648 then
|
|
|
649 Error_Msg_N
|
|
|
650 ("argument for pragma% must be string literal", Arg);
|
|
|
651 raise Error_Resync;
|
|
|
652 end if;
|
|
|
653
|
|
|
654 Str := Strval (Expression (Arg));
|
|
|
655
|
|
|
656 -- Check string has no wide chars
|
|
|
657
|
|
|
658 for J in 1 .. String_Length (Str) loop
|
|
|
659 if Get_String_Char (Str, J) > 255 then
|
|
|
660 Error_Msg
|
|
|
661 ("wide character not allowed in pattern for pragma%",
|
|
|
662 Sloc (Expression (Arg2)) + Text_Ptr (J) - 1);
|
|
|
663 end if;
|
|
|
664 end loop;
|
|
|
665
|
|
|
666 -- Acquire string
|
|
|
667
|
|
|
668 String_To_Name_Buffer (Str);
|
|
|
669 return new String'(Name_Buffer (1 .. Name_Len));
|
|
|
670 end Get_String_Argument;
|
|
|
671
|
|
|
672 --------------------
|
|
|
673 -- Process_Casing --
|
|
|
674 --------------------
|
|
|
675
|
|
|
676 procedure Process_Casing (Arg : Node_Id) is
|
|
|
677 Expr : constant Node_Id := Expression (Arg);
|
|
|
678
|
|
|
679 begin
|
|
|
680 Check_Required_Identifier (Arg, Name_Casing);
|
|
|
681
|
|
|
682 if Nkind (Expr) = N_Identifier then
|
|
|
683 if Chars (Expr) = Name_Lowercase then
|
|
|
684 Cas := All_Lower_Case;
|
|
|
685 return;
|
|
|
686 elsif Chars (Expr) = Name_Uppercase then
|
|
|
687 Cas := All_Upper_Case;
|
|
|
688 return;
|
|
|
689 elsif Chars (Expr) = Name_Mixedcase then
|
|
|
690 Cas := Mixed_Case;
|
|
|
691 return;
|
|
|
692 end if;
|
|
|
693 end if;
|
|
|
694
|
|
|
695 Error_Msg_N
|
|
|
696 ("Casing argument for pragma% must be " &
|
|
|
697 "one of Mixedcase, Lowercase, Uppercase",
|
|
|
698 Arg);
|
|
|
699 end Process_Casing;
|
|
|
700
|
|
|
701 -----------------------------
|
|
|
702 -- Process_Dot_Replacement --
|
|
|
703 -----------------------------
|
|
|
704
|
|
|
705 procedure Process_Dot_Replacement (Arg : Node_Id) is
|
|
|
706 begin
|
|
|
707 Check_Required_Identifier (Arg, Name_Dot_Replacement);
|
|
|
708 Dot := Get_String_Argument (Arg);
|
|
|
709 end Process_Dot_Replacement;
|
|
|
710
|
|
|
711 -- Start of processing for Source_File_Name and
|
|
|
712 -- Source_File_Name_Project pragmas.
|
|
|
713
|
|
|
714 begin
|
|
|
715 if Prag_Id = Pragma_Source_File_Name then
|
|
|
716 if Project_File_In_Use = In_Use then
|
|
|
717 Error_Msg
|
|
|
718 ("pragma Source_File_Name cannot be used " &
|
|
|
719 "with a project file", Pragma_Sloc);
|
|
|
720
|
|
|
721 else
|
|
|
722 Project_File_In_Use := Not_In_Use;
|
|
|
723 end if;
|
|
|
724
|
|
|
725 else
|
|
|
726 if Project_File_In_Use = Not_In_Use then
|
|
|
727 Error_Msg
|
|
|
728 ("pragma Source_File_Name_Project should only be used " &
|
|
|
729 "with a project file", Pragma_Sloc);
|
|
|
730 else
|
|
|
731 Project_File_In_Use := In_Use;
|
|
|
732 end if;
|
|
|
733 end if;
|
|
|
734
|
|
|
735 -- We permit from 1 to 3 arguments
|
|
|
736
|
|
|
737 if Arg_Count not in 1 .. 3 then
|
|
|
738 Check_Arg_Count (1);
|
|
|
739 end if;
|
|
|
740
|
|
|
741 Expr1 := Expression (Arg1);
|
|
|
742
|
|
|
743 -- If first argument is identifier or selected component, then
|
|
|
744 -- we have the specific file case of the Source_File_Name pragma,
|
|
|
745 -- and the first argument is a unit name.
|
|
|
746
|
|
|
747 if Nkind (Expr1) = N_Identifier
|
|
|
748 or else
|
|
|
749 (Nkind (Expr1) = N_Selected_Component
|
|
|
750 and then
|
|
|
751 Nkind (Selector_Name (Expr1)) = N_Identifier)
|
|
|
752 then
|
|
|
753 if Nkind (Expr1) = N_Identifier
|
|
|
754 and then Chars (Expr1) = Name_System
|
|
|
755 then
|
|
|
756 Error_Msg_N
|
|
|
757 ("pragma Source_File_Name may not be used for System",
|
|
|
758 Arg1);
|
|
|
759 return Error;
|
|
|
760 end if;
|
|
|
761
|
|
|
762 -- Process index argument if present
|
|
|
763
|
|
|
764 if Arg_Count = 3 then
|
|
|
765 Expr := Expression (Arg3);
|
|
|
766
|
|
|
767 if Nkind (Expr) /= N_Integer_Literal
|
|
|
768 or else not UI_Is_In_Int_Range (Intval (Expr))
|
|
|
769 or else Intval (Expr) > 999
|
|
|
770 or else Intval (Expr) <= 0
|
|
|
771 then
|
|
|
772 Error_Msg
|
|
|
773 ("pragma% index must be integer literal" &
|
|
|
774 " in range 1 .. 999", Sloc (Expr));
|
|
|
775 raise Error_Resync;
|
|
|
776 else
|
|
|
777 Index := UI_To_Int (Intval (Expr));
|
|
|
778 end if;
|
|
|
779
|
|
|
780 -- No index argument present
|
|
|
781
|
|
|
782 else
|
|
|
783 Check_Arg_Count (2);
|
|
|
784 Index := 0;
|
|
|
785 end if;
|
|
|
786
|
|
|
787 Check_Optional_Identifier (Arg1, Name_Unit_Name);
|
|
|
788 Unam := Get_Unit_Name (Expr1);
|
|
|
789
|
|
|
790 Check_Arg_Is_String_Literal (Arg2);
|
|
|
791
|
|
|
792 if Chars (Arg2) = Name_Spec_File_Name then
|
|
|
793 Set_File_Name
|
|
|
794 (Get_Spec_Name (Unam), Get_Fname (Arg2), Index);
|
|
|
795
|
|
|
796 elsif Chars (Arg2) = Name_Body_File_Name then
|
|
|
797 Set_File_Name
|
|
|
798 (Unam, Get_Fname (Arg2), Index);
|
|
|
799
|
|
|
800 else
|
|
|
801 Error_Msg_N
|
|
|
802 ("pragma% argument has incorrect identifier", Arg2);
|
|
|
803 return Pragma_Node;
|
|
|
804 end if;
|
|
|
805
|
|
|
806 -- If the first argument is not an identifier, then we must have
|
|
|
807 -- the pattern form of the pragma, and the first argument must be
|
|
|
808 -- the pattern string with an appropriate name.
|
|
|
809
|
|
|
810 else
|
|
|
811 if Chars (Arg1) = Name_Spec_File_Name then
|
|
|
812 Typ := 's';
|
|
|
813
|
|
|
814 elsif Chars (Arg1) = Name_Body_File_Name then
|
|
|
815 Typ := 'b';
|
|
|
816
|
|
|
817 elsif Chars (Arg1) = Name_Subunit_File_Name then
|
|
|
818 Typ := 'u';
|
|
|
819
|
|
|
820 elsif Chars (Arg1) = Name_Unit_Name then
|
|
|
821 Error_Msg_N
|
|
|
822 ("Unit_Name parameter for pragma% must be an identifier",
|
|
|
823 Arg1);
|
|
|
824 raise Error_Resync;
|
|
|
825
|
|
|
826 else
|
|
|
827 Error_Msg_N
|
|
|
828 ("pragma% argument has incorrect identifier", Arg1);
|
|
|
829 raise Error_Resync;
|
|
|
830 end if;
|
|
|
831
|
|
|
832 Pat := Get_String_Argument (Arg1);
|
|
|
833
|
|
|
834 -- Check pattern has exactly one asterisk
|
|
|
835
|
|
|
836 Nast := 0;
|
|
|
837 for J in Pat'Range loop
|
|
|
838 if Pat (J) = '*' then
|
|
|
839 Nast := Nast + 1;
|
|
|
840 end if;
|
|
|
841 end loop;
|
|
|
842
|
|
|
843 if Nast /= 1 then
|
|
|
844 Error_Msg_N
|
|
|
845 ("file name pattern must have exactly one * character",
|
|
|
846 Arg1);
|
|
|
847 return Pragma_Node;
|
|
|
848 end if;
|
|
|
849
|
|
|
850 -- Set defaults for Casing and Dot_Separator parameters
|
|
|
851
|
|
|
852 Cas := All_Lower_Case;
|
|
|
853 Dot := new String'(".");
|
|
|
854
|
|
|
855 -- Process second and third arguments if present
|
|
|
856
|
|
|
857 if Arg_Count > 1 then
|
|
|
858 if Chars (Arg2) = Name_Casing then
|
|
|
859 Process_Casing (Arg2);
|
|
|
860
|
|
|
861 if Arg_Count = 3 then
|
|
|
862 Process_Dot_Replacement (Arg3);
|
|
|
863 end if;
|
|
|
864
|
|
|
865 else
|
|
|
866 Process_Dot_Replacement (Arg2);
|
|
|
867
|
|
|
868 if Arg_Count = 3 then
|
|
|
869 Process_Casing (Arg3);
|
|
|
870 end if;
|
|
|
871 end if;
|
|
|
872 end if;
|
|
|
873
|
|
|
874 Set_File_Name_Pattern (Pat, Typ, Dot, Cas);
|
|
|
875 end if;
|
|
|
876 end Source_File_Name;
|
|
|
877
|
|
|
878 -----------------------------
|
|
|
879 -- Source_Reference (GNAT) --
|
|
|
880 -----------------------------
|
|
|
881
|
|
|
882 -- pragma Source_Reference
|
|
|
883 -- (INTEGER_LITERAL [, STRING_LITERAL] );
|
|
|
884
|
|
|
885 -- Processing for this pragma must be done at parse time, since error
|
|
|
886 -- messages needing the proper line numbers can be generated in parse
|
|
|
887 -- only mode with semantic checking turned off, and indeed we usually
|
|
|
888 -- turn off semantic checking anyway if any parse errors are found.
|
|
|
889
|
|
|
890 when Pragma_Source_Reference => Source_Reference : declare
|
|
|
891 Fname : File_Name_Type;
|
|
|
892
|
|
|
893 begin
|
|
|
894 if Arg_Count /= 1 then
|
|
|
895 Check_Arg_Count (2);
|
|
|
896 Check_No_Identifier (Arg2);
|
|
|
897 end if;
|
|
|
898
|
|
|
899 -- Check that this is first line of file. We skip this test if
|
|
|
900 -- we are in syntax check only mode, since we may be dealing with
|
|
|
901 -- multiple compilation units.
|
|
|
902
|
|
|
903 if Get_Physical_Line_Number (Pragma_Sloc) /= 1
|
|
|
904 and then Num_SRef_Pragmas (Current_Source_File) = 0
|
|
|
905 and then Operating_Mode /= Check_Syntax
|
|
|
906 then
|
|
|
907 Error_Msg -- CODEFIX
|
|
|
908 ("first % pragma must be first line of file", Pragma_Sloc);
|
|
|
909 raise Error_Resync;
|
|
|
910 end if;
|
|
|
911
|
|
|
912 Check_No_Identifier (Arg1);
|
|
|
913
|
|
|
914 if Arg_Count = 1 then
|
|
|
915 if Num_SRef_Pragmas (Current_Source_File) = 0 then
|
|
|
916 Error_Msg
|
|
|
917 ("file name required for first % pragma in file",
|
|
|
918 Pragma_Sloc);
|
|
|
919 raise Error_Resync;
|
|
|
920 else
|
|
|
921 Fname := No_File;
|
|
|
922 end if;
|
|
|
923
|
|
|
924 -- File name present
|
|
|
925
|
|
|
926 else
|
|
|
927 Check_Arg_Is_String_Literal (Arg2);
|
|
|
928 String_To_Name_Buffer (Strval (Expression (Arg2)));
|
|
|
929 Fname := Name_Find;
|
|
|
930
|
|
|
931 if Num_SRef_Pragmas (Current_Source_File) > 0 then
|
|
|
932 if Fname /= Full_Ref_Name (Current_Source_File) then
|
|
|
933 Error_Msg
|
|
|
934 ("file name must be same in all % pragmas", Pragma_Sloc);
|
|
|
935 raise Error_Resync;
|
|
|
936 end if;
|
|
|
937 end if;
|
|
|
938 end if;
|
|
|
939
|
|
|
940 if Nkind (Expression (Arg1)) /= N_Integer_Literal then
|
|
|
941 Error_Msg
|
|
|
942 ("argument for pragma% must be integer literal",
|
|
|
943 Sloc (Expression (Arg1)));
|
|
|
944 raise Error_Resync;
|
|
|
945
|
|
|
946 -- OK, this source reference pragma is effective, however, we
|
|
|
947 -- ignore it if it is not in the first unit in the multiple unit
|
|
|
948 -- case. This is because the only purpose in this case is to
|
|
|
949 -- provide source pragmas for subsequent use by gnatchop.
|
|
|
950
|
|
|
951 else
|
|
|
952 if Num_Library_Units = 1 then
|
|
|
953 Register_Source_Ref_Pragma
|
|
|
954 (Fname,
|
|
|
955 Strip_Directory (Fname),
|
|
|
956 UI_To_Int (Intval (Expression (Arg1))),
|
|
|
957 Get_Physical_Line_Number (Pragma_Sloc) + 1);
|
|
|
958 end if;
|
|
|
959 end if;
|
|
|
960 end Source_Reference;
|
|
|
961
|
|
|
962 -------------------------
|
|
|
963 -- Style_Checks (GNAT) --
|
|
|
964 -------------------------
|
|
|
965
|
|
|
966 -- pragma Style_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
|
|
|
967
|
|
|
968 -- This is processed by the parser since some of the style
|
|
|
969 -- checks take place during source scanning and parsing.
|
|
|
970
|
|
|
971 when Pragma_Style_Checks => Style_Checks : declare
|
|
|
972 A : Node_Id;
|
|
|
973 S : String_Id;
|
|
|
974 C : Char_Code;
|
|
|
975 OK : Boolean := True;
|
|
|
976
|
|
|
977 begin
|
|
|
978 -- Two argument case is only for semantics
|
|
|
979
|
|
|
980 if Arg_Count = 2 then
|
|
|
981 null;
|
|
|
982
|
|
|
983 else
|
|
|
984 Check_Arg_Count (1);
|
|
|
985 Check_No_Identifier (Arg1);
|
|
|
986 A := Expression (Arg1);
|
|
|
987
|
|
|
988 if Nkind (A) = N_String_Literal then
|
|
|
989 S := Strval (A);
|
|
|
990
|
|
|
991 declare
|
|
|
992 Slen : constant Natural := Natural (String_Length (S));
|
|
|
993 Options : String (1 .. Slen);
|
|
|
994 J : Positive;
|
|
|
995 Ptr : Positive;
|
|
|
996
|
|
|
997 begin
|
|
|
998 J := 1;
|
|
|
999 loop
|
|
|
1000 C := Get_String_Char (S, Pos (J));
|
|
|
1001
|
|
|
1002 if not In_Character_Range (C) then
|
|
|
1003 OK := False;
|
|
|
1004 Ptr := J;
|
|
|
1005 exit;
|
|
|
1006
|
|
|
1007 else
|
|
|
1008 Options (J) := Get_Character (C);
|
|
|
1009 end if;
|
|
|
1010
|
|
|
1011 if J = Slen then
|
|
|
1012 if not Ignore_Style_Checks_Pragmas then
|
|
|
1013 Set_Style_Check_Options (Options, OK, Ptr);
|
|
|
1014 end if;
|
|
|
1015
|
|
|
1016 exit;
|
|
|
1017
|
|
|
1018 else
|
|
|
1019 J := J + 1;
|
|
|
1020 end if;
|
|
|
1021 end loop;
|
|
|
1022
|
|
|
1023 if not OK then
|
|
|
1024 Error_Msg
|
|
|
1025 (Style_Msg_Buf (1 .. Style_Msg_Len),
|
|
|
1026 Sloc (Expression (Arg1)) + Source_Ptr (Ptr));
|
|
|
1027 raise Error_Resync;
|
|
|
1028 end if;
|
|
|
1029 end;
|
|
|
1030
|
|
|
1031 elsif Nkind (A) /= N_Identifier then
|
|
|
1032 OK := False;
|
|
|
1033
|
|
|
1034 elsif Chars (A) = Name_All_Checks then
|
|
|
1035 if not Ignore_Style_Checks_Pragmas then
|
|
|
1036 if GNAT_Mode then
|
|
|
1037 Stylesw.Set_GNAT_Style_Check_Options;
|
|
|
1038 else
|
|
|
1039 Stylesw.Set_Default_Style_Check_Options;
|
|
|
1040 end if;
|
|
|
1041 end if;
|
|
|
1042
|
|
|
1043 elsif Chars (A) = Name_On then
|
|
|
1044 if not Ignore_Style_Checks_Pragmas then
|
|
|
1045 Style_Check := True;
|
|
|
1046 end if;
|
|
|
1047
|
|
|
1048 elsif Chars (A) = Name_Off then
|
|
|
1049 if not Ignore_Style_Checks_Pragmas then
|
|
|
1050 Style_Check := False;
|
|
|
1051 end if;
|
|
|
1052
|
|
|
1053 else
|
|
|
1054 OK := False;
|
|
|
1055 end if;
|
|
|
1056
|
|
|
1057 if not OK then
|
|
|
1058 Error_Msg ("incorrect argument for pragma%", Sloc (A));
|
|
|
1059 raise Error_Resync;
|
|
|
1060 end if;
|
|
|
1061 end if;
|
|
|
1062 end Style_Checks;
|
|
|
1063
|
|
|
1064 -------------------------
|
|
|
1065 -- Suppress_All (GNAT) --
|
|
|
1066 -------------------------
|
|
|
1067
|
|
|
1068 -- pragma Suppress_All
|
|
|
1069
|
|
|
1070 -- This is a rather odd pragma, because other compilers allow it in
|
|
|
1071 -- strange places. DEC allows it at the end of units, and Rational
|
|
|
1072 -- allows it as a program unit pragma, when it would be more natural
|
|
|
1073 -- if it were a configuration pragma.
|
|
|
1074
|
|
|
1075 -- Since the reason we provide this pragma is for compatibility with
|
|
|
1076 -- these other compilers, we want to accommodate these strange placement
|
|
|
1077 -- rules, and the easiest thing is simply to allow it anywhere in a
|
|
|
1078 -- unit. If this pragma appears anywhere within a unit, then the effect
|
|
|
1079 -- is as though a pragma Suppress (All_Checks) had appeared as the first
|
|
|
1080 -- line of the current file, i.e. as the first configuration pragma in
|
|
|
1081 -- the current unit.
|
|
|
1082
|
|
|
1083 -- To get this effect, we set the flag Has_Pragma_Suppress_All in the
|
|
|
1084 -- compilation unit node for the current source file then in the last
|
|
|
1085 -- stage of parsing a file, if this flag is set, we materialize the
|
|
|
1086 -- Suppress (All_Checks) pragma, marked as not coming from Source.
|
|
|
1087
|
|
|
1088 when Pragma_Suppress_All =>
|
|
|
1089 Set_Has_Pragma_Suppress_All (Cunit (Current_Source_Unit));
|
|
|
1090
|
|
|
1091 ---------------------
|
|
|
1092 -- Warnings (GNAT) --
|
|
|
1093 ---------------------
|
|
|
1094
|
|
|
1095 -- pragma Warnings ([TOOL_NAME,] DETAILS [, REASON]);
|
|
|
1096
|
|
|
1097 -- DETAILS ::= On | Off
|
|
|
1098 -- DETAILS ::= On | Off, local_NAME
|
|
|
1099 -- DETAILS ::= static_string_EXPRESSION
|
|
|
1100 -- DETAILS ::= On | Off, static_string_EXPRESSION
|
|
|
1101
|
|
|
1102 -- TOOL_NAME ::= GNAT | GNATProve
|
|
|
1103
|
|
|
1104 -- REASON ::= Reason => STRING_LITERAL {& STRING_LITERAL}
|
|
|
1105
|
|
|
1106 -- Note: If the first argument matches an allowed tool name, it is
|
|
|
1107 -- always considered to be a tool name, even if there is a string
|
|
|
1108 -- variable of that name.
|
|
|
1109
|
|
|
1110 -- The one argument ON/OFF case is processed by the parser, since it may
|
|
|
1111 -- control parser warnings as well as semantic warnings, and in any case
|
|
|
1112 -- we want to be absolutely sure that the range in the warnings table is
|
|
|
1113 -- set well before any semantic analysis is performed. Note that we
|
|
|
1114 -- ignore this pragma if debug flag -gnatd.i is set.
|
|
|
1115
|
|
|
1116 -- Also note that the "one argument" case may have two or three
|
|
|
1117 -- arguments if the first one is a tool name, and/or the last one is a
|
|
|
1118 -- reason argument.
|
|
|
1119
|
|
|
1120 when Pragma_Warnings => Warnings : declare
|
|
|
1121 function First_Arg_Is_Matching_Tool_Name return Boolean;
|
|
|
1122 -- Returns True if the first argument is a tool name matching the
|
|
|
1123 -- current tool being run.
|
|
|
1124
|
|
|
1125 function Last_Arg return Node_Id;
|
|
|
1126 -- Returns the last argument
|
|
|
1127
|
|
|
1128 function Last_Arg_Is_Reason return Boolean;
|
|
|
1129 -- Returns True if the last argument is a reason argument
|
|
|
1130
|
|
|
1131 function Get_Reason return String_Id;
|
|
|
1132 -- Analyzes Reason argument and returns corresponding String_Id
|
|
|
1133 -- value, or null if there is no Reason argument, or if the
|
|
|
1134 -- argument is not of the required form.
|
|
|
1135
|
|
|
1136 -------------------------------------
|
|
|
1137 -- First_Arg_Is_Matching_Tool_Name --
|
|
|
1138 -------------------------------------
|
|
|
1139
|
|
|
1140 function First_Arg_Is_Matching_Tool_Name return Boolean is
|
|
|
1141 begin
|
|
|
1142 return Nkind (Arg1) = N_Identifier
|
|
|
1143
|
|
|
1144 -- Return True if the tool name is GNAT, and we're not in
|
|
|
1145 -- GNATprove or CodePeer or ASIS mode...
|
|
|
1146
|
|
|
1147 and then ((Chars (Arg1) = Name_Gnat
|
|
|
1148 and then not
|
|
|
1149 (CodePeer_Mode or GNATprove_Mode or ASIS_Mode))
|
|
|
1150
|
|
|
1151 -- or if the tool name is GNATprove, and we're in GNATprove
|
|
|
1152 -- mode.
|
|
|
1153
|
|
|
1154 or else
|
|
|
1155 (Chars (Arg1) = Name_Gnatprove
|
|
|
1156 and then GNATprove_Mode));
|
|
|
1157 end First_Arg_Is_Matching_Tool_Name;
|
|
|
1158
|
|
|
1159 ----------------
|
|
|
1160 -- Get_Reason --
|
|
|
1161 ----------------
|
|
|
1162
|
|
|
1163 function Get_Reason return String_Id is
|
|
|
1164 Arg : constant Node_Id := Last_Arg;
|
|
|
1165 begin
|
|
|
1166 if Last_Arg_Is_Reason then
|
|
|
1167 Start_String;
|
|
|
1168 Get_Reason_String (Expression (Arg));
|
|
|
1169 return End_String;
|
|
|
1170 else
|
|
|
1171 return Null_String_Id;
|
|
|
1172 end if;
|
|
|
1173 end Get_Reason;
|
|
|
1174
|
|
|
1175 --------------
|
|
|
1176 -- Last_Arg --
|
|
|
1177 --------------
|
|
|
1178
|
|
|
1179 function Last_Arg return Node_Id is
|
|
|
1180 Last_Arg : Node_Id;
|
|
|
1181
|
|
|
1182 begin
|
|
|
1183 if Arg_Count = 1 then
|
|
|
1184 Last_Arg := Arg1;
|
|
|
1185 elsif Arg_Count = 2 then
|
|
|
1186 Last_Arg := Arg2;
|
|
|
1187 elsif Arg_Count = 3 then
|
|
|
1188 Last_Arg := Arg3;
|
|
|
1189 elsif Arg_Count = 4 then
|
|
|
1190 Last_Arg := Next (Arg3);
|
|
|
1191
|
|
|
1192 -- Illegal case, error issued in semantic analysis
|
|
|
1193
|
|
|
1194 else
|
|
|
1195 Last_Arg := Empty;
|
|
|
1196 end if;
|
|
|
1197
|
|
|
1198 return Last_Arg;
|
|
|
1199 end Last_Arg;
|
|
|
1200
|
|
|
1201 ------------------------
|
|
|
1202 -- Last_Arg_Is_Reason --
|
|
|
1203 ------------------------
|
|
|
1204
|
|
|
1205 function Last_Arg_Is_Reason return Boolean is
|
|
|
1206 Arg : constant Node_Id := Last_Arg;
|
|
|
1207 begin
|
|
|
1208 return Nkind (Arg) in N_Has_Chars
|
|
|
1209 and then Chars (Arg) = Name_Reason;
|
|
|
1210 end Last_Arg_Is_Reason;
|
|
|
1211
|
|
|
1212 The_Arg : Node_Id; -- On/Off argument
|
|
|
1213 Argx : Node_Id;
|
|
|
1214
|
|
|
1215 -- Start of processing for Warnings
|
|
|
1216
|
|
|
1217 begin
|
|
|
1218 if not Debug_Flag_Dot_I
|
|
|
1219 and then (Arg_Count = 1
|
|
|
1220 or else (Arg_Count = 2
|
|
|
1221 and then (First_Arg_Is_Matching_Tool_Name
|
|
|
1222 or else
|
|
|
1223 Last_Arg_Is_Reason))
|
|
|
1224 or else (Arg_Count = 3
|
|
|
1225 and then First_Arg_Is_Matching_Tool_Name
|
|
|
1226 and then Last_Arg_Is_Reason))
|
|
|
1227 then
|
|
|
1228 if First_Arg_Is_Matching_Tool_Name then
|
|
|
1229 The_Arg := Arg2;
|
|
|
1230 else
|
|
|
1231 The_Arg := Arg1;
|
|
|
1232 end if;
|
|
|
1233
|
|
|
1234 Check_No_Identifier (The_Arg);
|
|
|
1235 Argx := Expression (The_Arg);
|
|
|
1236
|
|
|
1237 if Nkind (Argx) = N_Identifier then
|
|
|
1238 if Chars (Argx) = Name_On then
|
|
|
1239 Set_Warnings_Mode_On (Pragma_Sloc);
|
|
|
1240 elsif Chars (Argx) = Name_Off then
|
|
|
1241 Set_Warnings_Mode_Off (Pragma_Sloc, Get_Reason);
|
|
|
1242 end if;
|
|
|
1243 end if;
|
|
|
1244 end if;
|
|
|
1245 end Warnings;
|
|
|
1246
|
|
|
1247 -----------------------------
|
|
|
1248 -- Wide_Character_Encoding --
|
|
|
1249 -----------------------------
|
|
|
1250
|
|
|
1251 -- pragma Wide_Character_Encoding (IDENTIFIER | CHARACTER_LITERAL);
|
|
|
1252
|
|
|
1253 -- This is processed by the parser, since the scanner is affected
|
|
|
1254
|
|
|
1255 when Pragma_Wide_Character_Encoding => Wide_Character_Encoding : declare
|
|
|
1256 A : Node_Id;
|
|
|
1257
|
|
|
1258 begin
|
|
|
1259 Check_Arg_Count (1);
|
|
|
1260 Check_No_Identifier (Arg1);
|
|
|
1261 A := Expression (Arg1);
|
|
|
1262
|
|
|
1263 if Nkind (A) = N_Identifier then
|
|
|
1264 Get_Name_String (Chars (A));
|
|
|
1265 Wide_Character_Encoding_Method :=
|
|
|
1266 Get_WC_Encoding_Method (Name_Buffer (1 .. Name_Len));
|
|
|
1267
|
|
|
1268 elsif Nkind (A) = N_Character_Literal then
|
|
|
1269 declare
|
|
|
1270 R : constant Char_Code :=
|
|
|
1271 Char_Code (UI_To_Int (Char_Literal_Value (A)));
|
|
|
1272 begin
|
|
|
1273 if In_Character_Range (R) then
|
|
|
1274 Wide_Character_Encoding_Method :=
|
|
|
1275 Get_WC_Encoding_Method (Get_Character (R));
|
|
|
1276 else
|
|
|
1277 raise Constraint_Error;
|
|
|
1278 end if;
|
|
|
1279 end;
|
|
|
1280
|
|
|
1281 else
|
|
|
1282 raise Constraint_Error;
|
|
|
1283 end if;
|
|
|
1284
|
|
|
1285 Upper_Half_Encoding :=
|
|
|
1286 Wide_Character_Encoding_Method in
|
|
|
1287 WC_Upper_Half_Encoding_Method;
|
|
|
1288
|
|
|
1289 exception
|
|
|
1290 when Constraint_Error =>
|
|
|
1291 Error_Msg_N ("invalid argument for pragma%", Arg1);
|
|
|
1292 end Wide_Character_Encoding;
|
|
|
1293
|
|
|
1294 -----------------------
|
|
|
1295 -- All Other Pragmas --
|
|
|
1296 -----------------------
|
|
|
1297
|
|
131
|
1298 -- For all other pragmas, checking and processing is handled entirely in
|
|
|
1299 -- Sem_Prag, and no further checking is done by Par.
|
|
111
|
1300
|
|
|
1301 when Pragma_Abort_Defer
|
|
|
1302 | Pragma_Abstract_State
|
|
131
|
1303 | Pragma_Acc_Data
|
|
|
1304 | Pragma_Acc_Kernels
|
|
|
1305 | Pragma_Acc_Loop
|
|
|
1306 | Pragma_Acc_Parallel
|
|
111
|
1307 | Pragma_Async_Readers
|
|
|
1308 | Pragma_Async_Writers
|
|
|
1309 | Pragma_Assertion_Policy
|
|
|
1310 | Pragma_Assume
|
|
|
1311 | Pragma_Assume_No_Invalid_Values
|
|
|
1312 | Pragma_All_Calls_Remote
|
|
|
1313 | Pragma_Allow_Integer_Address
|
|
|
1314 | Pragma_Annotate
|
|
|
1315 | Pragma_Assert
|
|
|
1316 | Pragma_Assert_And_Cut
|
|
|
1317 | Pragma_Asynchronous
|
|
|
1318 | Pragma_Atomic
|
|
|
1319 | Pragma_Atomic_Components
|
|
|
1320 | Pragma_Attach_Handler
|
|
|
1321 | Pragma_Attribute_Definition
|
|
|
1322 | Pragma_Check
|
|
|
1323 | Pragma_Check_Float_Overflow
|
|
|
1324 | Pragma_Check_Name
|
|
|
1325 | Pragma_Check_Policy
|
|
|
1326 | Pragma_Compile_Time_Error
|
|
|
1327 | Pragma_Compile_Time_Warning
|
|
|
1328 | Pragma_Constant_After_Elaboration
|
|
|
1329 | Pragma_Contract_Cases
|
|
|
1330 | Pragma_Convention_Identifier
|
|
|
1331 | Pragma_CPP_Class
|
|
|
1332 | Pragma_CPP_Constructor
|
|
|
1333 | Pragma_CPP_Virtual
|
|
|
1334 | Pragma_CPP_Vtable
|
|
|
1335 | Pragma_CPU
|
|
|
1336 | Pragma_C_Pass_By_Copy
|
|
|
1337 | Pragma_Comment
|
|
|
1338 | Pragma_Common_Object
|
|
|
1339 | Pragma_Complete_Representation
|
|
|
1340 | Pragma_Complex_Representation
|
|
|
1341 | Pragma_Component_Alignment
|
|
|
1342 | Pragma_Controlled
|
|
|
1343 | Pragma_Convention
|
|
|
1344 | Pragma_Deadline_Floor
|
|
|
1345 | Pragma_Debug_Policy
|
|
|
1346 | Pragma_Depends
|
|
|
1347 | Pragma_Detect_Blocking
|
|
|
1348 | Pragma_Default_Initial_Condition
|
|
|
1349 | Pragma_Default_Scalar_Storage_Order
|
|
|
1350 | Pragma_Default_Storage_Pool
|
|
|
1351 | Pragma_Disable_Atomic_Synchronization
|
|
|
1352 | Pragma_Discard_Names
|
|
|
1353 | Pragma_Dispatching_Domain
|
|
|
1354 | Pragma_Effective_Reads
|
|
|
1355 | Pragma_Effective_Writes
|
|
|
1356 | Pragma_Eliminate
|
|
|
1357 | Pragma_Elaborate
|
|
|
1358 | Pragma_Elaborate_All
|
|
|
1359 | Pragma_Elaborate_Body
|
|
|
1360 | Pragma_Elaboration_Checks
|
|
|
1361 | Pragma_Enable_Atomic_Synchronization
|
|
|
1362 | Pragma_Export
|
|
|
1363 | Pragma_Export_Function
|
|
|
1364 | Pragma_Export_Object
|
|
|
1365 | Pragma_Export_Procedure
|
|
|
1366 | Pragma_Export_Value
|
|
|
1367 | Pragma_Export_Valued_Procedure
|
|
|
1368 | Pragma_Extend_System
|
|
|
1369 | Pragma_Extensions_Visible
|
|
|
1370 | Pragma_External
|
|
|
1371 | Pragma_External_Name_Casing
|
|
|
1372 | Pragma_Favor_Top_Level
|
|
|
1373 | Pragma_Fast_Math
|
|
|
1374 | Pragma_Finalize_Storage_Only
|
|
|
1375 | Pragma_Ghost
|
|
|
1376 | Pragma_Global
|
|
|
1377 | Pragma_Ident
|
|
|
1378 | Pragma_Implementation_Defined
|
|
|
1379 | Pragma_Implemented
|
|
|
1380 | Pragma_Implicit_Packing
|
|
|
1381 | Pragma_Import
|
|
|
1382 | Pragma_Import_Function
|
|
|
1383 | Pragma_Import_Object
|
|
|
1384 | Pragma_Import_Procedure
|
|
|
1385 | Pragma_Import_Valued_Procedure
|
|
|
1386 | Pragma_Independent
|
|
|
1387 | Pragma_Independent_Components
|
|
|
1388 | Pragma_Initial_Condition
|
|
|
1389 | Pragma_Initialize_Scalars
|
|
|
1390 | Pragma_Initializes
|
|
|
1391 | Pragma_Inline
|
|
|
1392 | Pragma_Inline_Always
|
|
|
1393 | Pragma_Inline_Generic
|
|
|
1394 | Pragma_Inspection_Point
|
|
|
1395 | Pragma_Interface
|
|
|
1396 | Pragma_Interface_Name
|
|
|
1397 | Pragma_Interrupt_Handler
|
|
|
1398 | Pragma_Interrupt_State
|
|
|
1399 | Pragma_Interrupt_Priority
|
|
|
1400 | Pragma_Invariant
|
|
|
1401 | Pragma_Keep_Names
|
|
|
1402 | Pragma_License
|
|
|
1403 | Pragma_Link_With
|
|
|
1404 | Pragma_Linker_Alias
|
|
|
1405 | Pragma_Linker_Constructor
|
|
|
1406 | Pragma_Linker_Destructor
|
|
|
1407 | Pragma_Linker_Options
|
|
|
1408 | Pragma_Linker_Section
|
|
|
1409 | Pragma_Lock_Free
|
|
|
1410 | Pragma_Locking_Policy
|
|
|
1411 | Pragma_Loop_Invariant
|
|
|
1412 | Pragma_Loop_Optimize
|
|
|
1413 | Pragma_Loop_Variant
|
|
|
1414 | Pragma_Machine_Attribute
|
|
|
1415 | Pragma_Main
|
|
|
1416 | Pragma_Main_Storage
|
|
131
|
1417 | Pragma_Max_Entry_Queue_Depth
|
|
111
|
1418 | Pragma_Max_Queue_Length
|
|
|
1419 | Pragma_Memory_Size
|
|
|
1420 | Pragma_No_Body
|
|
|
1421 | Pragma_No_Component_Reordering
|
|
|
1422 | Pragma_No_Elaboration_Code_All
|
|
|
1423 | Pragma_No_Heap_Finalization
|
|
|
1424 | Pragma_No_Inline
|
|
|
1425 | Pragma_No_Return
|
|
|
1426 | Pragma_No_Run_Time
|
|
|
1427 | Pragma_No_Strict_Aliasing
|
|
|
1428 | Pragma_No_Tagged_Streams
|
|
|
1429 | Pragma_Normalize_Scalars
|
|
|
1430 | Pragma_Obsolescent
|
|
|
1431 | Pragma_Ordered
|
|
|
1432 | Pragma_Optimize
|
|
|
1433 | Pragma_Optimize_Alignment
|
|
|
1434 | Pragma_Overflow_Mode
|
|
|
1435 | Pragma_Overriding_Renamings
|
|
|
1436 | Pragma_Pack
|
|
|
1437 | Pragma_Part_Of
|
|
|
1438 | Pragma_Partition_Elaboration_Policy
|
|
|
1439 | Pragma_Passive
|
|
|
1440 | Pragma_Preelaborable_Initialization
|
|
|
1441 | Pragma_Polling
|
|
|
1442 | Pragma_Prefix_Exception_Messages
|
|
|
1443 | Pragma_Persistent_BSS
|
|
|
1444 | Pragma_Post
|
|
|
1445 | Pragma_Postcondition
|
|
|
1446 | Pragma_Post_Class
|
|
|
1447 | Pragma_Pre
|
|
|
1448 | Pragma_Precondition
|
|
|
1449 | Pragma_Predicate
|
|
|
1450 | Pragma_Predicate_Failure
|
|
|
1451 | Pragma_Preelaborate
|
|
|
1452 | Pragma_Pre_Class
|
|
|
1453 | Pragma_Priority
|
|
|
1454 | Pragma_Priority_Specific_Dispatching
|
|
|
1455 | Pragma_Profile
|
|
|
1456 | Pragma_Profile_Warnings
|
|
|
1457 | Pragma_Propagate_Exceptions
|
|
|
1458 | Pragma_Provide_Shift_Operators
|
|
|
1459 | Pragma_Psect_Object
|
|
|
1460 | Pragma_Pure
|
|
|
1461 | Pragma_Pure_Function
|
|
|
1462 | Pragma_Queuing_Policy
|
|
|
1463 | Pragma_Refined_Depends
|
|
|
1464 | Pragma_Refined_Global
|
|
|
1465 | Pragma_Refined_Post
|
|
|
1466 | Pragma_Refined_State
|
|
|
1467 | Pragma_Relative_Deadline
|
|
|
1468 | Pragma_Remote_Access_Type
|
|
|
1469 | Pragma_Remote_Call_Interface
|
|
|
1470 | Pragma_Remote_Types
|
|
|
1471 | Pragma_Restricted_Run_Time
|
|
|
1472 | Pragma_Rational
|
|
|
1473 | Pragma_Ravenscar
|
|
|
1474 | Pragma_Rename_Pragma
|
|
|
1475 | Pragma_Reviewable
|
|
|
1476 | Pragma_Secondary_Stack_Size
|
|
|
1477 | Pragma_Share_Generic
|
|
|
1478 | Pragma_Shared
|
|
|
1479 | Pragma_Shared_Passive
|
|
|
1480 | Pragma_Short_Circuit_And_Or
|
|
|
1481 | Pragma_Short_Descriptors
|
|
|
1482 | Pragma_Simple_Storage_Pool_Type
|
|
|
1483 | Pragma_SPARK_Mode
|
|
|
1484 | Pragma_Storage_Size
|
|
|
1485 | Pragma_Storage_Unit
|
|
|
1486 | Pragma_Static_Elaboration_Desired
|
|
|
1487 | Pragma_Stream_Convert
|
|
|
1488 | Pragma_Subtitle
|
|
|
1489 | Pragma_Suppress
|
|
|
1490 | Pragma_Suppress_Debug_Info
|
|
|
1491 | Pragma_Suppress_Exception_Locations
|
|
|
1492 | Pragma_Suppress_Initialization
|
|
|
1493 | Pragma_System_Name
|
|
|
1494 | Pragma_Task_Dispatching_Policy
|
|
|
1495 | Pragma_Task_Info
|
|
|
1496 | Pragma_Task_Name
|
|
|
1497 | Pragma_Task_Storage
|
|
|
1498 | Pragma_Test_Case
|
|
|
1499 | Pragma_Thread_Local_Storage
|
|
|
1500 | Pragma_Time_Slice
|
|
|
1501 | Pragma_Title
|
|
|
1502 | Pragma_Type_Invariant
|
|
|
1503 | Pragma_Type_Invariant_Class
|
|
|
1504 | Pragma_Unchecked_Union
|
|
|
1505 | Pragma_Unevaluated_Use_Of_Old
|
|
|
1506 | Pragma_Unimplemented_Unit
|
|
|
1507 | Pragma_Universal_Aliasing
|
|
|
1508 | Pragma_Universal_Data
|
|
|
1509 | Pragma_Unmodified
|
|
|
1510 | Pragma_Unreferenced
|
|
|
1511 | Pragma_Unreferenced_Objects
|
|
|
1512 | Pragma_Unreserve_All_Interrupts
|
|
|
1513 | Pragma_Unsuppress
|
|
|
1514 | Pragma_Unused
|
|
|
1515 | Pragma_Use_VADS_Size
|
|
|
1516 | Pragma_Volatile
|
|
|
1517 | Pragma_Volatile_Components
|
|
|
1518 | Pragma_Volatile_Full_Access
|
|
|
1519 | Pragma_Volatile_Function
|
|
|
1520 | Pragma_Warning_As_Error
|
|
|
1521 | Pragma_Weak_External
|
|
|
1522 | Pragma_Validity_Checks
|
|
|
1523 =>
|
|
|
1524 null;
|
|
|
1525
|
|
|
1526 --------------------
|
|
|
1527 -- Unknown_Pragma --
|
|
|
1528 --------------------
|
|
|
1529
|
|
|
1530 -- Should be impossible, since we excluded this case earlier on
|
|
|
1531
|
|
|
1532 when Unknown_Pragma =>
|
|
|
1533 raise Program_Error;
|
|
|
1534
|
|
|
1535 end case;
|
|
|
1536
|
|
|
1537 return Pragma_Node;
|
|
|
1538
|
|
|
1539 --------------------
|
|
|
1540 -- Error Handling --
|
|
|
1541 --------------------
|
|
|
1542
|
|
|
1543 exception
|
|
|
1544 when Error_Resync =>
|
|
|
1545 return Error;
|
|
|
1546
|
|
|
1547 end Prag;
|
