test.c

   1 #include "oberon.h"
   2 #include "generator.h"
   3
   4 #include <string.h>
   5 #include <assert.h>
   6
   7 static char source_test[] =
   8         "(* Main module *)"
   9         "MODULE Test;"
  10         "IMPORT Out;"
  11         ""
  12         "VAR"
  13         "  nx- : INTEGER;"
  14         "  p : POINTER TO ARRAY 3 OF RECORD i, j, k : INTEGER END;"
  15         "  q : POINTER TO RECORD x, y, z : INTEGER END;"
  16         ""
  17         "PROCEDURE ChParam(VAR i : INTEGER);"
  18         "BEGIN"
  19         "  i := 1234;"
  20         "END ChParam;"
  21         ""
  22         "BEGIN;"
  23         "  NEW(p);"
  24         "  p[2].k := 1;"
  25         "  NEW(q);"
  26         "  "
  27         "  Out.Open;"
  28         "  ChParam(nx);"
  29         "  Out.Int(nx, 0);"
  30         "  Out.Ln;"
  31         "END Test."
  32 ;
  33
  34 static char source_out[] =
  35         "MODULE Out;"
  36         "(* Interface to outer program ;) *)"
  37         "VAR"
  38         "  Open-     : PROCEDURE;"
  39 //      "  Char-     : PROCEDURE(ch : CHAR);"
  40 //      "  String-   : PROCEDURE(str : ARRAY OF CHAR)"
  41 //      "  Int-      : PROCEDURE(i, n : LONGINT);"
  42         "  Int-      : PROCEDURE(i, n : INTEGER);"
  43 //      "  Real-     : PROCEDURE(x : REAL; n : INTEGER);"
  44 //      "  LongReal- : PROCEDURE(x : LONGREAL; n : INTEGER);"
  45         "  Ln-       : PROCEDURE;"
  46         "END Out."
  47 ;
  48
  49 static oberon_context_t * ctx;
  50 static oberon_module_t * mod;
  51
  52 static const char *
  53 import_module(const char * name)
  54 {
  55         if(strcmp(name, "Test") == 0)
  56         {
  57                 return source_test;
  58         }
  59         else if(strcmp(name, "Out") == 0)
  60         {
  61                 return source_out;
  62         }
  63         else
  64         {
  65                 return NULL;
  66         }
  67 }
  68
  69 typedef void (*TOutOpen)();
  70 static TOutOpen * OutOpenPtr;
  71 void ImplOutOpen()
  72 {
  73 }
  74
  75 typedef void (*TOutInt)(int, int);
  76 static TOutInt * OutIntPtr;
  77 void ImplOutInt(int i, int n)
  78 {
  79         char number[22];
  80         snprintf(number, 22, "%i", i);
  81         int len = strlen(number);
  82         for(int i = 0; i < n - len; i++)
  83         {
  84                 putchar(' ');
  85         }
  86         printf("%s", number);
  87 }
  88
  89 typedef void (*TOutLn)();
  90 static TOutLn * OutLnPtr;
  91 void ImplOutLn()
  92 {
  93         putchar('\n');
  94 }
  95
  96 void init_system_modules()
  97 {
  98         OutOpenPtr = oberon_generator_get_var(ctx, "Out_Open");
  99         *OutOpenPtr = ImplOutOpen;
 100         OutIntPtr = oberon_generator_get_var(ctx, "Out_Int");
 101         *OutIntPtr = ImplOutInt;
 102         OutLnPtr = oberon_generator_get_var(ctx, "Out_Ln");
 103         *OutLnPtr = ImplOutLn;
 104 }
 105
 106 void start_module()
 107 {
 108         void (*begin)() = oberon_generator_get_procedure(ctx, "Test_BEGIN");
 109         begin();
 110 }
 111
 112 int
 113 main(int argc, char ** argv)
 114 {
 115         ctx = oberon_create_context(import_module);
 116         mod = oberon_compile_module(ctx, source_test);
 117
 118         oberon_generate_code(ctx);
 119
 120         init_system_modules();
 121
 122         oberon_generator_dump(ctx, "dump.txt");
 123
 124         start_module();
 125
 126         oberon_destroy_context(ctx);
 127         return 0;
 128 }