gnu.commonlisp.lang

Class Symbols

java.lang.Object

gnu.commonlisp.lang.Symbols

public class Symbols
extends java.lang.Object

Support for Lisp Symbols. The special symbol `nil' is actually the value gnu.lists.LList.Empty.

Method Summary

Modifier and Type	Method and Description
static java.lang.Object	getFunctionBinding(Environment environ, java.lang.Object symbol) Get the function binding for a given symbol in a given environment.
static java.lang.Object	getFunctionBinding(java.lang.Object symbol) Get the function binding for a given symbol in the current environment.
static java.lang.Object	getPrintName(java.lang.Object sym)
static Symbol	getSymbol(Environment env, java.lang.Object sym)
static Symbol	getSymbol(java.lang.Object sym)
static boolean	isBound(java.lang.Object sym)
static boolean	isSymbol(java.lang.Object val) Predicate to check whether a given object is a CL symbol.
static void	setFunctionBinding(Environment environ, java.lang.Object symbol, java.lang.Object newValue)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isSymbol

public static boolean isSymbol(java.lang.Object val)

Predicate to check whether a given object is a CL symbol. Used for SYMBOLP.

isBound

public static boolean isBound(java.lang.Object sym)

getSymbol

public static Symbol getSymbol(Environment env,
                               java.lang.Object sym)

getSymbol

public static Symbol getSymbol(java.lang.Object sym)

getPrintName

public static java.lang.Object getPrintName(java.lang.Object sym)

getFunctionBinding

public static java.lang.Object getFunctionBinding(java.lang.Object symbol)

Get the function binding for a given symbol in the current environment. Will throw an UnboundLocationException if no such symbol exists in the current environment.

getFunctionBinding

public static java.lang.Object getFunctionBinding(Environment environ,
                                                  java.lang.Object symbol)

Get the function binding for a given symbol in a given environment. Will throw an UnboundLocationException if no such symbol exists in the current environment.

setFunctionBinding

public static void setFunctionBinding(Environment environ,
                                      java.lang.Object symbol,
                                      java.lang.Object newValue)