src-wsl/transf-exp.wsl

   1 C:"
   2 Copyright (C) 2012 Doni Pracner http://perun.dmi.rs/pracner
   3
   4 This program is free software; you can redistribute it
   5 and/or modify it under the terms of the GNU General Public
   6 License as published by the Free Software Foundation; either
   7 version 3 of the License, or (at your option) any later
   8 version.
   9
  10 This program is distributed in the hope that it will be
  11 useful, but WITHOUT ANY WARRANTY; without even the implied
  12 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  13 PURPOSE. See the GNU General Public License for more
  14 details.
  15
  16 You should have received a copy of the GNU General Public
  17 License along with this program. If not, see
  18 <http://www.gnu.org/licenses/>.
  19 ==========================================================";
  20
  21 C:"Automatic transformation tool for simplification of WSL";
  22 C:"code automaticaly translated from assembly using asm2wsl.";
  23 C:"a simple version";
  24 MW_PROC @Process_Prog() ==
  25         FOREACH Statement DO
  26                 IF @Trans?(TR_Push_Pop) THEN
  27                         @Trans(TR_Push_Pop, "");
  28                 FI
  29         OD;
  30         @Trans(TR_Constant_Propagation, "");
  31         FOREACH Statement DO
  32                 IF @ST(@I) = T_A_S THEN
  33                         C:"don't need to test for this, works for T_A_S";
  34                         IF @Trans?(TR_Collapse_Action_System) THEN
  35                                 @Trans(TR_Collapse_Action_System, "");
  36                         FI;
  37                 ELSIF @Trans?(TR_Remove_All_Redundant_Vars) THEN
  38                         @Trans(TR_Remove_All_Redundant_Vars, "");
  39                 ELSIF @ST(@I) = T_Skip THEN
  40                         @Delete
  41                 FI
  42         OD;
  43         C:"remove all the comments ";
  44         FOREACH Statement DO
  45         IF @ST(@I) = T_Comment THEN
  46                         @Delete
  47         FI
  48         OD;
  49         C:"Convert DO loops into WHILE loops";
  50         FOREACH Statement DO
  51                 IF @Trans?(TR_Floop_To_While) THEN
  52                         @Trans(TR_Floop_To_While, "");
  53                 FI
  54         OD;
  55         C:"Go back to the start, and remove redundant";
  56         @GOTO(< >);
  57         @Trans(TR_Delete_All_Redundant, "");
  58         SKIP
  59 END;
  60
  61 BEGIN
  62 VAR< prog := < >, inifilename := "transf.ini",
  63         filename:="", file := "", inifile:= ""
  64 >:
  65 IF @File_Exists?(inifilename) THEN
  66         inifile := @Open_Input_File(inifilename);
  67         filename := @Read_Line(inifile);
  68         WHILE NOT @EOF?(filename) DO
  69                 IF @File_Exists?(filename) THEN
  70                         PRINT("");
  71                         @New_Program(@Parse_File(filename, T_Statements));
  72                         PRINT("Processing: ", filename);
  73                         prog := @Program;
  74                         @Process_Prog();
  75                         Get_New_Name(VAR filename);
  76                         @PP_Item(@Program, 80, filename);
  77                         Prog_Stat(prog);
  78                         PRINT("");
  79                         PRINT("After Conversion");
  80                         Prog_Stat(@Program)
  81                 FI;
  82                 filename := @Read_Line(inifile)
  83         OD;
  84         @Close_Input_Port(inifile);
  85 ELSE
  86     PRINT("ini file (",inifilename,") not found.",
  87     " it should contain a list of filenames to be converted");
  88     PRINT("you can input a filename now:");
  89     filename := @Read_Line(Standard_Input_Port);
  90     IF @File_Exists?(filename) THEN
  91         @New_Program(@Parse_File(filename, T_Statements));
  92         @Process_Prog();
  93         Get_New_Name(VAR filename);
  94         @PP_Item(@Program, 80, filename)
  95     FI;
  96 FI
  97 ENDVAR
  98 WHERE
  99
 100 PROC Prog_Stat(Pro VAR)==
 101   PRINT ("Mc ", @McCabe(Pro));
 102   PRINT ("Statements ", @Stat_Count(Pro));
 103   PRINT ("Control/data Flow ", @CFDF_Metric(Pro));
 104   PRINT ("Size(nodes) ", @Total_Size(Pro));
 105   PRINT ("Struct ", @Struct_Metric(Pro));
 106   SKIP
 107 END
 108
 109 PROC Get_New_Name(VAR str) ==
 110         IF @Ends_With?(str, ".wsl") THEN
 111                 str := SUBSTR(str, 0, SLENGTH(str)-4)
 112         FI;
 113         str := str ++ "_t.wsl"
 114 END
 115
 116 PROC Get_Before_Name(VAR str) ==
 117         IF @Ends_With?(str, ".wsl") THEN
 118                 str := SUBSTR(str, 0, SLENGTH(str)-4)
 119         FI;
 120         str := str ++ "_b.wsl"
 121 END
 122
 123 END