------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S P R I N T -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992-2002, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 2, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING. If not, write -- -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- -- MA 02111-1307, USA. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package (source print) contains routines for printing the source -- program corresponding to a specified syntax tree. These routines are -- intended for debugging use in the compiler (not as a user level pretty -- print tool). Only information present in the tree is output (e.g. no -- comments are present in the output), and as far as possible we avoid -- making any assumptions about the correctness of the tree, so a bad -- tree may either blow up on a debugging check, or list incorrect source. with Types; use Types; package Sprint is ----------------------- -- Syntax Extensions -- ----------------------- -- When the generated tree is printed, it contains constructs that are not -- pure Ada. For convenience, syntactic extensions to Ada have been defined -- purely for the purposes of this printout (they are not recognized by the -- parser) -- Allocator new xxx [storage_pool = xxx] -- Cleanup action at end procedure name; -- Conditional expression (if expr then expr else expr) -- Conversion wi Float_Truncate target^(source) -- Convert wi Conversion_OK target?(source) -- Convert wi Rounded_Result target@(source) -- Divide wi Treat_Fixed_As_Integer x #/ y -- Divide wi Rounded_Result x @/ y -- Expression with range check {expression} -- Operator with range check {operator} (e.g. {+}) -- Free statement free expr [storage_pool = xxx] -- Freeze entity with freeze actions freeze entityname [ actions ] -- Interpretation interpretation type [, entity] -- Intrinsic calls function-name!(arg, arg, arg) -- Itype reference reference itype -- Label declaration labelname : label -- Mod wi Treat_Fixed_As_Integer x #mod y -- Multiple concatenation expr && expr && expr ... && expr -- Multiply wi Treat_Fixed_As_Integer x #* y -- Multiply wi Rounded_Result x @* y -- Others choice for cleanup when all others -- Raise xxx error [xxx_error [when cond]] -- Raise xxx error with msg [xxx_error [when cond], "msg"] -- Rational literal See UR_Write for details -- Rem wi Treat_Fixed_As_Integer x #rem y -- Reference expression'reference -- Shift nodes shift_name!(expr, count) -- Subprogram_Info subprog'Subprogram_Info -- Unchecked conversion target_type!(source_expression) -- Unchecked expression `(expression) -- Validate_Unchecked_Conversion validate unchecked_conversion -- (src-type, target-typ); -- Note: the storage_pool parameters for allocators and the free node -- are omitted if the Storage_Pool field is Empty, indicating use of -- the standard default pool. ----------------- -- Subprograms -- ----------------- procedure Source_Dump; -- This routine is called from the GNAT main program to dump source as -- requested by debug options. The relevant debug options are: -- -ds print source from tree, both original and generated code -- -dg print source from tree, including only the generated code -- -do print source from tree, including only the original code -- -df modify the above to include all units, not just the main unit -- -sz print source from tree for package Standard procedure Sprint_Comma_List (List : List_Id); -- Prints the nodes in a list, with separating commas. If the list -- is empty then no output is generated. procedure Sprint_Paren_Comma_List (List : List_Id); -- Prints the nodes in a list, surrounded by parentheses, and separated -- by comas. If the list is empty, then no output is generated. A blank -- is output before the initial left parenthesis. procedure Sprint_Opt_Paren_Comma_List (List : List_Id); -- Same as normal Sprint_Paren_Comma_List procedure, except that -- an extra blank is output if List is non-empty, and nothing at all is -- printed it the argument is No_List. procedure Sprint_Node_List (List : List_Id); -- Prints the nodes in a list with no separating characters. This is used -- in the case of lists of items which are printed on separate lines using -- the current indentation amount. Note that Sprint_Node_List itself -- does not generate any New_Line calls. procedure Sprint_Opt_Node_List (List : List_Id); -- Like Sprint_Node_List, but prints nothing if List = No_List. procedure Sprint_Indented_List (List : List_Id); -- Like Sprint_Line_List, except that the indentation level is -- increased before outputting the list of items, and then decremented -- (back to its original level) before returning to the caller. procedure Sprint_Node (Node : Node_Id); -- Prints a single node. No new lines are output, except as required for -- splitting lines that are too long to fit on a single physical line. -- No output is generated at all if Node is Empty. No trailing or leading -- blank characters are generated. procedure Sprint_Opt_Node (Node : Node_Id); -- Same as normal Sprint_Node procedure, except that one leading -- blank is output before the node if it is non-empty. procedure pg (Node : Node_Id); pragma Export (Ada, pg); -- Print generated source for node N (like -gnatdg output). This is -- intended only for use from gdb for debugging purposes. procedure po (Node : Node_Id); pragma Export (Ada, po); -- Print original source for node N (like -gnatdo output). This is -- intended only for use from gdb for debugging purposes. procedure ps (Node : Node_Id); pragma Export (Ada, ps); -- Print generated and original source for node N (like -gnatds output). -- This is intended only for use from gdb for debugging purposes. end Sprint;