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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 -- R E P I N F O - I N P U T --
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6 -- --
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7 -- S p e c --
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8 -- --
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9 -- Copyright (C) 2018-2019, Free Software Foundation, Inc. --
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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 -- This package provides an alternate way of populating the internal tables
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33 -- of Repinfo from a JSON input rather than the binary blob of the tree file.
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34 -- Note that this is an additive mechanism, i.e. nothing is destroyed in the
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35 -- internal state of the unit when it is used.
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36
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37 -- The first step is to feed the unit with a JSON stream of a specified format
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38 -- (see the spec of Repinfo for its description) by means of Read_JSON_Stream.
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39 -- Then, for each entity whose representation information is present in the
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40 -- JSON stream, the appropriate Get_JSON_* routines can be invoked to override
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41 -- the eponymous fields of the entity in the tree.
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42
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43 package Repinfo.Input is
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44
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45 function Get_JSON_Esize (Name : String) return Node_Ref_Or_Val;
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46 -- Returns the Esize value of the entity specified by Name, which is not
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47 -- the component of a record type, or else No_Uint if no representation
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48 -- information was supplied for the entity. Name is the full qualified name
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49 -- of the entity in lower case letters.
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50
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51 function Get_JSON_RM_Size (Name : String) return Node_Ref_Or_Val;
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52 -- Likewise for the RM_Size
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53
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54 function Get_JSON_Component_Size (Name : String) return Node_Ref_Or_Val;
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55 -- Likewise for the Component_Size of an array type
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56
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57 function Get_JSON_Component_Bit_Offset
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58 (Name : String;
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59 Record_Name : String) return Node_Ref_Or_Val;
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60 -- Returns the Component_Bit_Offset of the component specified by Name,
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61 -- which is declared in the record type specified by Record_Name, or else
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62 -- No_Uint if no representation information was supplied for the component.
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63 -- Name is the unqualified name of the component whereas Record_Name is the
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64 -- full qualified name of the record type, both in lower case letters.
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65
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66 function Get_JSON_Esize
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67 (Name : String;
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68 Record_Name : String) return Node_Ref_Or_Val;
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69 -- Likewise for the Esize
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70
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71 Invalid_JSON_Stream : exception;
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72 -- Raised if a format error is detected in the JSON stream
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73
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74 procedure Read_JSON_Stream (Text : Text_Buffer; File_Name : String);
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75 -- Reads a JSON stream and populates internal tables from it. File_Name is
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76 -- only used in error messages issued by the JSON parser.
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77
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78 end Repinfo.Input;
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