Revert "Add built-in __file constant"

This reverts commit d15fc2224be20eac391062d1c1898b027a168713.

source/compiler/sc.h

@@ -527,7 +527,6 @@ SC_FUNC constvalue *append_constval(constvalue *table,const char *name,cell val,
 SC_FUNC constvalue *find_constval(constvalue *table,char *name,int index);
 SC_FUNC void delete_consttable(constvalue *table);
 SC_FUNC symbol *add_constant(char *name,cell val,int vclass,int tag);
-SC_FUNC symbol *add_string_constant(char *name,const char *val,int vclass);
 SC_FUNC void exporttag(int tag);
 SC_FUNC void sc_attachdocumentation(symbol *sym);
 
@@ -584,9 +583,7 @@ SC_FUNC void begcseg(void);
 SC_FUNC void begdseg(void);
 SC_FUNC void setline(int chkbounds);
 SC_FUNC void setfiledirect(char *name);
-SC_FUNC void setfileconst(char *name);
 SC_FUNC void setlinedirect(int line);
-SC_FUNC void setlineconst(int line);
 SC_FUNC void setlabel(int index);
 SC_FUNC void markexpr(optmark type,const char *name,cell offset);
 SC_FUNC void startfunc(char *fname);

source/compiler/sc1.c

@@ -570,8 +570,8 @@ int pc_compile(int argc, char *argv[])
             sc_needsemicolon ? "true" : "false",
             sc_tabsize);
     pc_writeasm(outf,string);
-  } /* if */
     setfiledirect(inpfname);
+  } /* if */
   /* do the first pass through the file (or possibly two or more "first passes") */
   sc_parsenum=0;
   inpfmark=pc_getpossrc(inpf_org);
@@ -596,7 +596,7 @@ int pc_compile(int argc, char *argv[])
     fline=skipinput;            /* reset line number */
     sc_reparse=FALSE;           /* assume no extra passes */
     sc_status=statFIRST;        /* resetglobals() resets it to IDLE */
-    setfileconst(inpfname);
+
     if (strlen(incfname)>0) {
       if (strcmp(incfname,sDEF_PREFIX)==0) {
         plungefile(incfname,FALSE,TRUE);    /* parse "default.inc" */
@@ -661,7 +661,6 @@ int pc_compile(int argc, char *argv[])
   lexinit();                    /* clear internal flags of lex() */
   sc_status=statWRITE;          /* allow to write --this variable was reset by resetglobals() */
   writeleader(&glbtab);
-  setfileconst(inpfname);
   insert_dbgfile(inpfname);
   if (strlen(incfname)>0) {
     if (strcmp(incfname,sDEF_PREFIX)==0)
@@ -4899,9 +4898,9 @@ SC_FUNC symbol *add_constant(char *name,cell val,int vclass,int tag)
    * constants are stored in the symbols table, this also finds previously
    * defind constants. */
   sym=findglb(name,sSTATEVAR);
-  if (sym==NULL)
+  if (!sym)
     sym=findloc(name);
-  if (sym!=NULL) {
+  if (sym) {
     int redef=0;
     if (sym->ident!=iCONSTEXPR)
       redef=1;                  /* redefinition a function/variable to a constant is not allowed */
@@ -4948,48 +4947,6 @@ redef_enumfield:
   return sym;
 }
 
-/*  add_string_constant
- *
- *  Adds a string constant to the symbol table.
- */
-SC_FUNC symbol *add_string_constant(char *name,const char *val,int vclass)
-{
-  symbol *sym;
-
-  /* Test whether a global or local symbol with the same name exists. Since
-   * constants are stored in the symbols table, this also finds previously
-   * defind constants. */
-  sym=findglb(name,sSTATEVAR);
-  if (sym==NULL)
-    sym=findloc(name);
-  if (sym!=NULL) {
-    int redef=0;
-    if (sym->ident!=iARRAY) {
-      error(21,name);           /* symbol already defined */
-      return NULL;
-    } /* if */
-  } else {
-    sym=addsym(name,0,iARRAY,vclass,0,uDEFINE);
-    sym->fnumber=fcurrent;
-    sym->usage|=uSTOCK;
-  } /* if */
-  sym->addr=(litidx+glb_declared)*sizeof(cell);
-  sym->usage|=(uDEFINE | uPREDEF);
-  /* Store this constant only if it's used somewhere. This can be detected
-   * in the second stage. */
-  if (sc_status==statWRITE && (sym->usage & uREAD)!=0) {
-    assert(litidx==0);
-    begdseg();
-    while (*val!='\0')
-      litadd(*val++);
-    litadd(0);
-    glb_declared+=litidx;
-    dumplits();
-    litidx=0;
-  }
-  return sym;
-}
-
 /*  statement           - The Statement Parser
  *
  *  This routine is called whenever the parser needs to know what statement

source/compiler/sc2.c

@@ -198,7 +198,6 @@ static char extensions[][6] = { "", ".inc", ".p", ".pawn" };
   icomment=0;               /* not in a comment */
   insert_dbgfile(inpfname);
   setfiledirect(inpfname);
-  setfileconst(inpfname);
   listline=-1;              /* force a #line directive when changing the file */
   sc_is_utf8=(short)scan_utf8(inpf,real_path);
   free(real_path);
@@ -351,6 +350,7 @@ static void readline(unsigned char *line)
 {
   int i,num,cont;
   unsigned char *ptr;
+  symbol *sym;
 
   if (lptr==term_expr)
     return;
@@ -429,7 +429,9 @@ static void readline(unsigned char *line)
       line+=strlen((char*)line);
     } /* if */
     fline+=1;
-    setlineconst(fline);
+    sym=findconst("__line",NULL);
+    assert(sym!=NULL);
+    sym->addr=fline;
   } while (num>=0 && cont);
 }
 
@@ -2709,7 +2711,7 @@ SC_FUNC void delete_symbols(symbol *root,int level,int delete_labels,int delete_
     case iVARIABLE:
     case iARRAY:
       /* do not delete global variables if functions are preserved */
-      mustdelete=delete_functions || (sym->usage & uPREDEF)==0;
+      mustdelete=delete_functions;
       break;
     case iREFERENCE:
       /* always delete references (only exist as function parameters) */

source/compiler/sc4.c

@@ -270,11 +270,6 @@ SC_FUNC void setfiledirect(char *name)
   } /* if */
 }
 
-SC_FUNC void setfileconst(char *name)
-{
-  add_string_constant("__file",name,sGLOBAL);
-}
-
 SC_FUNC void setlinedirect(int line)
 {
   if (sc_status==statFIRST && sc_listing) {
@@ -284,15 +279,6 @@ SC_FUNC void setlinedirect(int line)
   } /* if */
 }
 
-SC_FUNC void setlineconst(int line)
-{
-  symbol *sym;
-
-  sym=findconst("__line",NULL);
-  assert(sym!=NULL);
-  sym->addr=fline;
-}
-
 /*  setlabel
  *
  *  Post a code label (specified as a number), on a new line.