Term createDoubleOrFloat(String x) {
Term retval = null;
if (x.endsWith("F") || x.endsWith("f")) {
retval =
TermWare.getInstance()
.getTermFactory()
.createFloat(Float.valueOf(x.substring(0, x.length() - 1)));
} else {
retval = TermWare.getInstance().getTermFactory().createDouble(Double.valueOf(x));
}
return retval;
}
Term createIntegerOrLong(String x) throws ParseException {
try {
Term retval = null;
if (x.endsWith("L") || x.endsWith("l")) {
try {
retval =
TermWare.getInstance()
.getTermFactory()
.createLong(Long.decode(x.substring(0, x.length() - 1)));
} catch (NumberFormatException ex) {
// it can be just too big, becouse literals can be unsigned, while decode does not handle
// unsogned,
// bigger then MAX
// Here we will handle one case, which exists in JDK sources. (java/lang/Long.java)
if (x.length() > 2) {
char last = x.charAt(x.length() - 2);
long l = Long.decode(x.substring(0, x.length() - 2));
char x0 = x.charAt(0);
char x1 = x.charAt(1);
if (x0 == '0') {
if (x1 == 'x' || x1 == 'X') {
// hex
int l1 = Character.digit(last, 16);
l = ((l << 8) + l1);
} else {
// oct
int l1 = Character.digit(last, 8);
l = ((l << 4) + l1);
}
}
retval = TermWare.getInstance().getTermFactory().createLong(l);
} else {
throw ex;
}
}
} else {
long l = Long.decode(x);
retval = TermWare.getInstance().getTermFactory().createInt((int) l);
}
return retval;
} catch (NumberFormatException ex) {
throw new ParseException(
"Can't read IntegerLiteral "
+ ex.getMessage()
+ "(s="
+ x
+ ") "
+ " in file "
+ inFname);
}
}
Term cons(Term x1, Term x2) {
try {
return TermWare.getInstance().getTermFactory().createTerm("cons", x1, x2);
} catch (TermWareException ex) {
throw new TermWareRuntimeException(ex);
}
}
Term createInt(int x) {
return TermWare.getInstance().getTermFactory().createInt(x);
}
Term createNil() {
return TermWare.getInstance().getTermFactory().createNil();
}
Term createAtom(String name) {
return TermWare.getInstance().getTermFactory().createAtom(name);
}
Term createTerm(String name, Term x1, Term x2) throws TermWareException {
return TermWare.getInstance().getTermFactory().createTerm(name, x1, x2);
}
Term createBoolean(boolean x) {
return TermWare.getInstance().getTermFactory().createBoolean(x);
}
Term createString(String x) {
return TermWare.getInstance().getTermFactory().createString(x);
}
Term createChar(char x) {
return TermWare.getInstance().getTermFactory().createChar(x);
}
