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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 -- S C I L _ L L --
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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) 2010-2018, 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 Atree; use Atree;
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33 with Opt; use Opt;
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34 with Sinfo; use Sinfo;
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35 with System.HTable; use System.HTable;
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36
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37 package body SCIL_LL is
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38
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39 procedure Copy_SCIL_Node (Target : Node_Id; Source : Node_Id);
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40 -- Copy the SCIL field from Source to Target (it is used as the argument
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41 -- for a call to Set_Reporting_Proc in package atree).
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42
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43 type Header_Num is range 1 .. 4096;
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44
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45 function Hash (N : Node_Id) return Header_Num;
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46 -- Hash function for Node_Ids
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47
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48 --------------------------
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49 -- Internal Hash Tables --
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50 --------------------------
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51
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52 package Contract_Only_Body_Flag is new Simple_HTable
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53 (Header_Num => Header_Num,
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54 Element => Boolean,
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55 No_Element => False,
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56 Key => Node_Id,
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57 Hash => Hash,
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58 Equal => "=");
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59 -- This table records the value of flag Is_Contract_Only_Flag of tree nodes
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60
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61 package Contract_Only_Body_Nodes is new Simple_HTable
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62 (Header_Num => Header_Num,
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63 Element => Node_Id,
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64 No_Element => Empty,
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65 Key => Node_Id,
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66 Hash => Hash,
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67 Equal => "=");
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68 -- This table records the value of attribute Contract_Only_Body of tree
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69 -- nodes.
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70
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71 package SCIL_Nodes is new Simple_HTable
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72 (Header_Num => Header_Num,
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73 Element => Node_Id,
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74 No_Element => Empty,
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75 Key => Node_Id,
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76 Hash => Hash,
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77 Equal => "=");
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78 -- This table records the value of attribute SCIL_Node of tree nodes
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79
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80 --------------------
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81 -- Copy_SCIL_Node --
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82 --------------------
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83
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84 procedure Copy_SCIL_Node (Target : Node_Id; Source : Node_Id) is
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85 begin
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86 Set_SCIL_Node (Target, Get_SCIL_Node (Source));
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87 end Copy_SCIL_Node;
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88
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89 ----------------------------
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90 -- Get_Contract_Only_Body --
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91 ----------------------------
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92
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93 function Get_Contract_Only_Body (N : Node_Id) return Node_Id is
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94 begin
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95 if CodePeer_Mode
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96 and then Present (N)
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97 then
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98 return Contract_Only_Body_Nodes.Get (N);
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99 else
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100 return Empty;
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101 end if;
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102 end Get_Contract_Only_Body;
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103
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104 -------------------
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105 -- Get_SCIL_Node --
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106 -------------------
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107
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108 function Get_SCIL_Node (N : Node_Id) return Node_Id is
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109 begin
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110 if Generate_SCIL
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111 and then Present (N)
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112 then
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113 return SCIL_Nodes.Get (N);
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114 else
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115 return Empty;
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116 end if;
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117 end Get_SCIL_Node;
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118
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119 ----------
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120 -- Hash --
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121 ----------
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122
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123 function Hash (N : Node_Id) return Header_Num is
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124 begin
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125 return Header_Num (1 + N mod Node_Id (Header_Num'Last));
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126 end Hash;
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127
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128 ----------------
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129 -- Initialize --
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130 ----------------
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131
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132 procedure Initialize is
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133 begin
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134 SCIL_Nodes.Reset;
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135 Contract_Only_Body_Nodes.Reset;
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136 Contract_Only_Body_Flag.Reset;
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137 Set_Reporting_Proc (Copy_SCIL_Node'Access);
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138 end Initialize;
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139
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140 ---------------------------
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141 -- Is_Contract_Only_Body --
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142 ---------------------------
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143
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144 function Is_Contract_Only_Body (E : Entity_Id) return Boolean is
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145 begin
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146 return Contract_Only_Body_Flag.Get (E);
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147 end Is_Contract_Only_Body;
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148
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149 ----------------------------
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150 -- Set_Contract_Only_Body --
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151 ----------------------------
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152
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153 procedure Set_Contract_Only_Body (N : Node_Id; Value : Node_Id) is
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154 begin
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155 pragma Assert (CodePeer_Mode
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156 and then Present (N)
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157 and then Is_Contract_Only_Body (Value));
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158
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159 Contract_Only_Body_Nodes.Set (N, Value);
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160 end Set_Contract_Only_Body;
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161
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162 -------------------------------
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163 -- Set_Is_Contract_Only_Body --
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164 -------------------------------
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165
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166 procedure Set_Is_Contract_Only_Body (E : Entity_Id) is
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167 begin
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168 Contract_Only_Body_Flag.Set (E, True);
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169 end Set_Is_Contract_Only_Body;
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170
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171 -------------------
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172 -- Set_SCIL_Node --
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173 -------------------
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174
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175 procedure Set_SCIL_Node (N : Node_Id; Value : Node_Id) is
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176 begin
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177 pragma Assert (Generate_SCIL);
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178
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179 if Present (Value) then
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180 case Nkind (Value) is
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181 when N_SCIL_Dispatch_Table_Tag_Init =>
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182 pragma Assert (Nkind (N) = N_Object_Declaration);
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183 null;
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184
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185 when N_SCIL_Dispatching_Call =>
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186 pragma Assert (Nkind (N) in N_Subprogram_Call);
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187 null;
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188
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189 when N_SCIL_Membership_Test =>
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190 pragma Assert (Nkind_In (N, N_Identifier,
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191 N_And_Then,
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192 N_Or_Else,
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193 N_Expression_With_Actions));
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194 null;
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195
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196 when others =>
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197 pragma Assert (False);
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198 raise Program_Error;
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199 end case;
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200 end if;
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201
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202 SCIL_Nodes.Set (N, Value);
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203 end Set_SCIL_Node;
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204
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205 end SCIL_LL;
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