/* Copyright (c) Jython Developers */
package org.python.core;
import java.io.Serializable;
import org.python.expose.ExposedGet;
import org.python.expose.ExposedType;
@Untraversable
@ExposedType(name = "builtin_function_or_method", isBaseType = false)
public abstract class PyBuiltinCallable extends PyObject {
protected Info info;
protected String doc;
protected PyBuiltinCallable(PyType type, Info info) {
super(type);
this.info = info;
}
protected PyBuiltinCallable(Info info) {
this.info = info;
}
/**
* Returns a new instance of this type of PyBuiltinFunction bound to self
*/
abstract public PyBuiltinCallable bind(PyObject self);
@ExposedGet(name = "__name__")
public PyObject fastGetName() {
return Py.newString(this.info.getName());
}
@ExposedGet(name = "__doc__")
public String getDoc() {
return doc;
}
@ExposedGet(name = "__module__")
public PyObject getModule() {
return Py.None;
}
@ExposedGet(name = "__call__")
public PyObject makeCall() {
return this;
}
@ExposedGet(name = "__self__")
public PyObject getSelf() {
return Py.None;
}
public void setInfo(Info info) {
this.info = info;
}
@Override
public String toString() {
PyObject self = getSelf();
if (self == null) {
return String.format("", info.getName());
} else {
return String.format("", info.getName(),
self.getType().fastGetName(), Py.idstr(self));
}
}
public interface Info extends Serializable {
String getName();
int getMaxargs();
int getMinargs();
PyException unexpectedCall(int nargs, boolean keywords);
}
public static class DefaultInfo implements Info {
private String name;
private int maxargs, minargs;
public DefaultInfo(String name, int minargs, int maxargs) {
this.name = name;
this.minargs = minargs;
this.maxargs = maxargs;
}
public DefaultInfo(String name) {
this(name, -1, -1);
}
public String getName() {
return name;
}
public int getMaxargs() {
return maxargs;
}
public int getMinargs() {
return minargs;
}
public static boolean check(int nargs, int minargs, int maxargs) {
if (nargs < minargs) {
return false;
}
if (maxargs != -1 && nargs > maxargs) {
return false;
}
return true;
}
public static PyException unexpectedCall(int nargs, boolean keywords, String name,
int minargs, int maxargs) {
if (keywords) {
return Py.TypeError(name + "() takes no keyword arguments");
}
String argsblurb;
if (minargs == maxargs) {
if (minargs == 0) {
argsblurb = "no arguments";
} else if (minargs == 1) {
argsblurb = "exactly one argument";
} else {
argsblurb = minargs + " arguments";
}
} else if (maxargs == -1) {
return Py.TypeError(String.format("%s() requires at least %d arguments (%d) given",
name, minargs, nargs));
} else if (minargs <= 0) {
argsblurb = "at most " + maxargs + " arguments";
} else {
argsblurb = minargs + "-" + maxargs + " arguments";
}
return Py.TypeError(String.format("%s() takes %s (%d given)", name, argsblurb, nargs));
}
public PyException unexpectedCall(int nargs, boolean keywords) {
return unexpectedCall(nargs, keywords, name, minargs, maxargs);
}
}
}