/* MAP-ELEMENTS for internal subroutines */
LVAL subr_map_elements P1C(mapfun, f)
{
LVAL arglist, result, fcn, first_compound, type;
int rlen;
first_compound = findcompound(FALSE);
if (first_compound == NIL) result = (*f)();
else {
xlstkcheck(3);
xlsave(arglist);
xlsave(fcn);
xlsave(result);
fcn = cvsubr(f, SUBR, 0);
type = compoundseqtype(first_compound);
arglist = makearglist(xlargc, xlargv);
rlen = findrlen(arglist);
fixuparglist(arglist);
result = map(type, fcn, arglist, rlen);
result = makecompound(first_compound, result);
#ifdef MULVALS
xlnumresults = 1;
xlresults[0] = result;
#endif /* MULVALS */
xlpopn(3);
}
return(result);
}
void makeset(TagType tag, int n)
{
Cell *temp;
makecompound(PAIR, n+2);
temp = newcell(tag);
temp->value = n;
temp->left = pop();
temp->right = template_nil;
push(temp);
}
static void parseapplication(void)
{
if(tokentype == TYPEID)
{
int count = 1;
push(gettemplate(tokenval));
gettoken();
while(tokentype == NUMBER
|| tokentype == IDENTIFIER
|| tokentype == TYPEID
|| tokentype == CHARACTER
|| tokentype == STRING
|| tokentype == LPAR
|| tokentype == LBRACK
|| tokentype == LACC)
{
parseterm();
count++;
}
makecompound(STRUCT, count);
}
else if(tokentype == OPERATOR)
parsename();
else
parseterm();
while(tokentype == NUMBER
|| tokentype == IDENTIFIER
|| tokentype == TYPEID
|| tokentype == CHARACTER
|| tokentype == STRING
|| tokentype == LPAR
|| tokentype == LBRACK
|| tokentype == LACC)
{
parseterm();
makeinverse(APPLY);
}
if(tokentype == OPERATOR && strcmp(tokenval, ":") == 0)
{
gettoken();
if(tokentype == RPAR)
{
push(gettemplate(":"));
make(APPLY);
}
else
{
parseapplication();
makeinverse(LIST);
}
}
}
static void makerecordfield(Cell *recordtype, Cell *field, Cell *fieldtype)
{
char *fieldname = getfunction(field->value)->name;
Cell *var = newcell(VARIABLE);
var->value = 1;
var->left = field;
push(fieldtype);
push(recordtype);
make(APPLY);
if(!inserttypeexpr(fieldname, pop())) parseerror(12);
push(var);
push(var);
push(field);
make(ALIAS);
makecompound(RECORD, 1);
push(field);
make(APPLY);
make(LIST);
if(!insert(fieldname, 1, FUNC, pop(), NULL)) parseerror(18);
}
/* Built in MAP-ELEMENTS */
LVAL xsmap_elements(V)
{
LVAL arglist, result, fcn, first_compound, type;
int rlen;
if (xlargc < 2) xltoofew();
first_compound = findcompound(TRUE);
if (first_compound == NIL) result = xfuncall();
else {
xlstkcheck(2)
xlsave(arglist);
xlsave(result);
fcn = xlgetarg();
type = compoundseqtype(first_compound);
arglist = makearglist(xlargc, xlargv);
rlen = findrlen(arglist);
fixuparglist(arglist);
result = map(type, fcn, arglist, rlen);
result = makecompound(first_compound,result);
xlpopn(2);
}
return(result);
}
/********************************************************************
initialisation of hashtable with system functions
*********************************************************************/
static void initsyslib(void)
{
Cell *obj = gettemplate("objecttype");
inserttypestring("object", "[char] -> objecttype");
insertabstype("object", obj);
parsetypeexpr("(*, [char] -> [[char]] -> * -> (*, [[char]]))");
makeconstant(FUNC, obj->value);
makecompound(STRUCT, 1);
make(TYPESYNONYM);
inserttypeexpr("objecttype", pop());
insertabstype("objecttype", obj);
insert("_section", 3, FUNC , NULL, apply_SECTION);
insert("if" , 3, FUNC , NULL, applyIF);
insert("^" , 2, FUNC , NULL, applyPOWER);
insert("neg" , 1, FUNC , NULL, applyNEG);
insert("*" , 2, FUNC , NULL, applyTIMES);
insert("/" , 2, FUNC , NULL, applyDIV);
insert("//" , 2, FUNC , NULL, applyDIVIDE);
insert("%" , 2, FUNC , NULL, applyMOD);
insert("+" , 2, FUNC , NULL, applyPLUS);
insert("-" , 2, FUNC , NULL, applyMINUS);
insert("=" , 2, FUNC , NULL, applyEQ);
insert("~=" , 2, FUNC , NULL, applyNE);
insert("<" , 2, FUNC , NULL, applyLT);
insert("<=" , 2, FUNC , NULL, applyLE);
insert(">" , 2, FUNC , NULL, applyGT);
insert(">=" , 2, FUNC , NULL, applyGE);
insert("&" , 2, FUNC , NULL, applyUPDATE);
insert("True" , 0, BOOLEAN , NULL, NULL);
insert("False" , 0, BOOLEAN , NULL, NULL);
insert("pi" , 0, REAL , NULL, NULL);
insert("Nil" , 0, NIL , NULL, NULL);
insert("" , 1, FUNC , NULL, NULL);
insert("strict" , 2, FUNC , NULL, applySTRICT);
inserttypestring("_section" , "(* -> ** -> ***) -> ** -> * -> ***");
inserttypestring("if" , "bool -> * -> * -> *");
inserttypestring("^" , "num -> num -> num");
inserttypestring("neg" , "num -> num");
inserttypestring("*" , "num -> num -> num");
inserttypestring("/" , "num -> num -> num");
inserttypestring("//" , "num -> num -> num");
inserttypestring("%" , "num -> num -> num");
inserttypestring("+" , "num -> num -> num");
inserttypestring("-" , "num -> num -> num");
inserttypestring("=" , "* -> * -> bool");
inserttypestring("~=" , "* -> * -> bool");
inserttypestring("<" , "* -> * -> bool");
inserttypestring("<=" , "* -> * -> bool");
inserttypestring(">" , "* -> * -> bool");
inserttypestring(">=" , "* -> * -> bool");
inserttypestring("&" , "* -> * -> *");
inserttypestring("True" , "bool");
inserttypestring("False" , "bool");
inserttypestring("pi" , "num");
inserttypestring("Nil" , "[*]");
inserttypestring("strict" , "(* -> **) -> * -> **");
insertsys("strict");
insertsys("^");
insertsys("neg");
insertsys("*");
insertsys("/");
insertsys("//");
insertsys("%");
insertsys("+");
insertsys("-");
insertsys("=");
insertsys("~=");
insertsys("<");
insertsys("<=");
insertsys(">");
insertsys(">=");
insertoperator("." , 1, Right);
insertoperator(":" , 1, Right);
insertoperator("&" , 1, Left);
insertoperator("!" , 2, Left);
insertoperator("^" , 2, Right);
insertoperator("*" , 3, Left);
insertoperator("/" , 3, Left);
insertoperator("//" , 3, Left);
insertoperator("%" , 3, Left);
insertoperator("++" , 4, Right);
insertoperator("--" , 4, Left);
insertoperator("+" , 4, Left);
insertoperator("-" , 4, Left);
insertoperator("=" , 5, Right);
insertoperator("~=" , 5, Left);
insertoperator("<" , 5, Left);
insertoperator("<=" , 5, Left);
insertoperator(">" , 5, Left);
insertoperator(">=" , 5, Left);
insertoperator("/\\" , 6, Right);
insertoperator("\\/" , 7, Right);
template_divide = gettemplate("//");
template_div = gettemplate("/");
template_mod = gettemplate("%");
template_power = gettemplate("^");
template_update = gettemplate("&");
}
static void parsestructdef(void)
{
char structname[stringsize];
char *headname;
int count;
Cell *head = pop();
setchecktypevariables(COLLECT);
push(template_match);
for(; head->tag==APPLY; head=head->left)
{
if(head->right->tag != UNDEFINED && head->right->tag != FUNC) parseerror(9);
push(maketypevariable(getfunction(head->right->value)->name));
make(STRUCT);
}
if(head->tag != UNDEFINED && head->tag != FUNC) parseerror(10);
headname = getfunction(head->value)->name;
makeconstant(FUNC, head->value);
make(STRUCT);
setchecktypevariables(CHECK);
gettoken();
head = top();
if(tokentype == LACC)
{
count = 0;
do
{
gettoken();
if(tokentype != IDENTIFIER) parseerror(25);
push(gettemplate(tokenval));
gettoken();
if(tokentype != COLONS) parseerror(15);
gettoken();
parsetype(TYPEEXPR);
makerecordfield(head, getN(2), getN(1));
makeinverse(TYPEDEF);
count++;
}
while(tokentype == COMMA);
makecompound(RECORD, count);
makeinverse(TYPEDEF);
if(tokentype != RACC) parseerror(33);
gettoken();
}
else
{
for(;;)
{
if(tokentype != TYPEID) parseerror(11);
strcpy(structname, tokenval);
count = 0;
gettoken();
while(tokentype == IDENTIFIER
|| tokentype == OPERATOR
|| tokentype == LBRACK
|| tokentype == LPAR)
{
parsetype(TYPETERM);
count++;
}
push(head);
while(count-- > 0) makeinverse(APPLY);
if(!inserttypeexpr(structname, pop())) parseerror(12);
if(tokentype != BAR) break;
gettoken();
}
}
if(!inserttypeexpr(headname, pop())) parseerror(12);
setchecktypevariables(NOCHECK);
}
static void parsetype(TypeType typetype)
{
switch(tokentype)
{
case IDENTIFIER:
if(strcmp(tokenval, "num") == 0)
{
push(newcell(INT));
gettoken();
}
else if(strcmp(tokenval, "char") == 0)
{
push(newcell(CHAR));
gettoken();
}
else if(strcmp(tokenval, "bool") == 0)
{
push(newcell(BOOLEAN));
gettoken();
}
else
{
int count = 1;
push(gettemplate(tokenval));
gettoken();
if(typetype == TYPEEXPR)
while(tokentype == IDENTIFIER
|| tokentype == OPERATOR
|| tokentype == LBRACK
|| tokentype == LPAR)
{
parsetype(TYPETERM);
count++;
}
makecompound(STRUCT, count);
}
break;
case OPERATOR:
push(maketypevariable(tokenval));
gettoken();
break;
case LPAR:
gettoken();
if(tokentype == RPAR)
push(newcell(NULLTUPLE));
else
{
parsetype(TYPEEXPR);
if(tokentype == COMMA)
{
int count = 1;
while(tokentype == COMMA)
{
gettoken();
parsetype(TYPEEXPR);
count++;
}
makecompound(PAIR, count);
}
}
if(tokentype != RPAR) parseerror(2);
gettoken();
break;
case LBRACK:
gettoken();
parsetype(TYPEEXPR);
push(template_nil);
makeinverse(LIST);
if(tokentype != RBRACK) parseerror(1);
gettoken();
break;
default:
parseerror(8);
}
if(typetype == TYPEEXPR && tokentype == ARROW)
{
gettoken();
parsetype(TYPEEXPR);
makeinverse(APPLY);
}
}
static void parseterm(void)
{
int count;
switch(tokentype)
{
case NUMBER:
if(strchr(tokenval, '.') == NULL)
makeINT(atol(tokenval));
else
makeREAL(atof(tokenval));
gettoken();
break;
case IDENTIFIER:
parsename();
break;
case TYPEID:
push(gettemplate(tokenval));
makecompound(STRUCT, 1);
gettoken();
break;
case CHARACTER:
makeconstant(CHAR, tokenval[0]);
gettoken();
break;
case STRING:
buildstring(tokenval);
gettoken();
break;
case LPAR:
gettoken();
if(tokentype == OPERATOR && strcmp(tokenval, "-") != 0)
{
parsename();
if(tokentype != RPAR)
{
parseexpression(MAXPRIO);
rotatestack();
push(gettemplate("_section"));
make(APPLY);
make(APPLY);
}
}
else if(tokentype == RPAR)
makeconstant(NULLTUPLE, 0);
else
{
parseexpression(MAXPRIO);
if(tokentype == COMMA)
{
count = 1;
while(tokentype == COMMA)
{
gettoken();
parseexpression(MAXPRIO);
count++;
}
makecompound(PAIR, count);
}
}
if(tokentype != RPAR) parseerror(2);
gettoken();
break;
case LBRACK:
parselist();
break;
case LACC:
count = 0;
do
{
gettoken();
if(tokentype != IDENTIFIER) parseerror(25);
push(gettemplate(tokenval));
gettoken();
if(strcmp(tokenval, "=") != 0) parseerror(5);
gettoken();
parseexpression(MAXPRIO);
makeinverse(ALIAS);
count++;
}
while(tokentype == COMMA);
makecompound(RECORD, count);
if(tokentype != RACC) parseerror(33);
gettoken();
break;
default:
parseerror(3);
}
}
