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import java.util.Date;
import java.util.Formatter;
import org.checkerframework.checker.formatter.FormatUtil;
import org.checkerframework.checker.formatter.qual.ConversionCategory;
import org.checkerframework.checker.formatter.qual.Format;
import org.junit.Assert;
public class FlowFormatter {
public static String callUnqual(String u) {
return u;
}
public static void main(String... p) {
Formatter f = new Formatter();
String unqual = System.lineSeparator();
String qual = "%s %d %f";
String wrong = "%$s";
callUnqual("%s");
callUnqual(qual);
callUnqual(wrong);
callUnqual(null);
// :: error: (format.string.invalid)
f.format(null);
@Format({ConversionCategory.GENERAL}) String nullAssign = null;
// :: error: (format.string.invalid)
f.format(nullAssign, "string");
if (false) {
nullAssign = "%s";
}
f.format(nullAssign, "string");
// :: error: (assignment.type.incompatible)
@Format({ConversionCategory.GENERAL}) String err0 = unqual;
// :: error: (assignment.type.incompatible)
@Format({ConversionCategory.GENERAL}) String err2 = "%$s";
@Format({ConversionCategory.GENERAL}) String ok = "%s";
String u = "%s" + " %" + "d";
String v = FormatUtil.asFormat(u, ConversionCategory.GENERAL, ConversionCategory.INT);
f.format(u, "String", 1337);
// :: error: (argument.type.incompatible)
f.format(u, "String", 7.4);
try {
String l = FormatUtil.asFormat(u, ConversionCategory.FLOAT, ConversionCategory.INT);
Assert.fail("Expected Exception");
} catch (Error e) {
}
String a = "Success: %s %d %f";
f.format(a, "String", 1337, 7.5);
String b = "Fail: %d";
// :: error: (argument.type.incompatible)
f.format(b, "Wrong");
@Format({
ConversionCategory.GENERAL,
ConversionCategory.INT,
ConversionCategory.FLOAT,
ConversionCategory.CHAR
})
String s = "Success: %s %d %f %c";
f.format(s, "OK", 42, 3.14, 'c');
@Format({ConversionCategory.GENERAL, ConversionCategory.INT, ConversionCategory.FLOAT}) String t = "Fail: %s %d %f";
// :: error: (argument.type.incompatible)
f.format(t, "OK", "Wrong", 3.14);
call(f, "Success: %tM");
// :: error: (argument.type.incompatible)
call(f, "Fail: %d");
System.out.println(f.toString());
f.close();
}
public static void call(Formatter f, @Format({ConversionCategory.TIME}) String s) {
f.format(s, new Date());
// :: error: (argument.type.incompatible)
f.format(s, "Wrong");
}
}
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