Direct Known Subclasses:

CommonLisp, ELisp

public abstract class Lisp2
extends LispLanguage 

• Field Summary

  Fields

  Modifier and Type	Field and Description
  static LList	FALSE
  static Expression	nilExpr
  static Symbol	TRUE

  • Fields inherited from class gnu.kawa.lispexpr.LispLanguage

    bracket_apply_sym, bracket_list_sym, constructNamespace, defaultReadTable, dots3_sym, entityNamespace, getNamedPartLocation, lookup_sym, quasiquote_str, quasiquote_sym, quote_str, splice_colon_str, splice_colon_sym, splice_str, splice_sym, unitNamespace, unquote_str, unquotesplicing_str

  • Fields inherited from class gnu.expr.Language

    current, environ, FUNCTION_NAMESPACE, global, NAMESPACE_PREFIX_NAMESPACE, PARSE_CURRENT_NAMES, PARSE_EMIT_MAIN, PARSE_EXPLICIT, PARSE_FOR_APPLET, PARSE_FOR_EVAL, PARSE_FOR_LINT, PARSE_FOR_SERVLET, PARSE_IMMEDIATE, PARSE_INTERACTIVE_MODULE, PARSE_ONE_LINE, PARSE_PROLOG, requirePedantic, userEnv, VALUE_NAMESPACE

• Constructor Summary

  Constructors

  Constructor and Description
  Lisp2 ()

• Method Summary

  All Methods

  Modifier and Type	Method and Description
  static java.lang.Object	asSymbol (java.lang.String name) Get a symbol for a given (interned) Java string.
  java.lang.Object	booleanObject (boolean b)
  ReadTable	createReadTable () Create a fresh ReadTable appropriate for this language.
  protected void	defun (java.lang.String name, java.lang.Object value)
  protected void	defun (Symbol sym, java.lang.Object value)
  protected Symbol	fromLangSymbol (java.lang.Object obj)
  java.lang.String	getCompilationClass ()
  java.lang.Object	getEnvPropertyFor (java.lang.reflect.Field fld, java.lang.Object value) Given a field, figure out which namespace to put its binding in.
  int	getNamespaceOf (Declaration decl) Get the namespace of a declaration.
  static java.lang.Object	getString (java.lang.String name) Get a string for a given Java string.
  static java.lang.Object	getString (Symbol symbol) Get a string for a given symbol.
  boolean	hasSeparateFunctionNamespace () Determines if functions in this language have a separate namespace.
  protected void	importLocation (Location loc)
  boolean	isTrue (java.lang.Object value) Test if a value is considered "true" in this language.
  static boolean	isTrueLisp (java.lang.Object value)
  java.lang.Object	noValue () The value to return for a "void" result.
  boolean	selfEvaluatingSymbol (java.lang.Object obj) Determine whether a symbol evaluates to itself.

  • Methods inherited from class gnu.kawa.lispexpr.LispLanguage

    declFromField, decodeArrayType, defSntxStFld, defSntxStFld, getLexer, getNamedType, getPackageStyleType, getPrimaryPrompt, getSecondaryPrompt, getTypeFor, getTypeFor, getTypeMap, keywordsAreSelfEvaluating, langSymbolToSymbol, parse, resolve

  • Methods inherited from class gnu.expr.Language

    asType, booleanValue, coerceFromObject, coerceToObject, decodeType, defAliasStFld, define, defineFunction, defineFunction, defProcStFld, defProcStFld, defProcStFld, defProcStFldAs, detect, detect, detect, encodeType, eval, eval, eval, eval, eval, eval, eval, eval, eval, formatType, getCompilation, getCompilation, getDefaultLanguage, getEnvironment, getEnvPropertyFor, getExtensions, getFormat, getInstance, getInstance, getInstanceFromFilenameExtension, getLangEnvironment, getLangTypeFor, getLanguages, getName, getNewEnvironment, getOutputConsumer, getSymbol, getTypeFor, getTypeFor, getTypeFor, hasNamespace, isValidJavaName, loadClass, lookup, lookupBuiltin, mangleName, parse, parse, parse, parse, registerLanguage, restoreCurrent, runAsApplication, setCurrentLanguage, setDefaults, setSaveCurrent, unionType

  • Methods inherited from class java.lang.Object

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

• Field Detail

  • FALSE

    public static final LList FALSE

  • TRUE

    public static final Symbol TRUE

  • nilExpr

    public static final Expression nilExpr

• Constructor Detail

  • Lisp2

    public Lisp2()

• Method Detail

  • isTrue

    public boolean isTrue(java.lang.Object value)

    Description copied from class: Language
    Test if a value is considered "true" in this language. Throws an exception if value can't be used in a boolean context. Use booleanValue to catch that exception.

    Overrides:

    isTrue in class Language

  • isTrueLisp

    public static boolean isTrueLisp(java.lang.Object value)

  • booleanObject

    public java.lang.Object booleanObject(boolean b)

    Overrides:

    booleanObject in class Language

  • noValue

    public java.lang.Object noValue()

    Description copied from class: Language
    The value to return for a "void" result.

    Overrides:

    noValue in class Language

  • hasSeparateFunctionNamespace

    public boolean hasSeparateFunctionNamespace()

    Determines if functions in this language have a separate namespace. Different Lisps have different organisations of the symbol namespace. "Lisp1" languages, notably Scheme, have a single namespace where functions and values are not distinguished. "Lisp2" languages, notably CL, separate the two objects into conceptually two namespaces. Kawa doesn't literally use two namespaces, such binding properties are looked up in an Environment table.

    Overrides:

    hasSeparateFunctionNamespace in class Language

    Returns:

    true if this language has a separate function namespace, false otherwise.

  • selfEvaluatingSymbol

    public boolean selfEvaluatingSymbol(java.lang.Object obj)

    Determine whether a symbol evaluates to itself.

    Overrides:

    selfEvaluatingSymbol in class LispLanguage

    Parameters:

    obj - The symbol to check

    Returns:

    true if the symbol evaluates to itself, otherwise false.

  • getEnvPropertyFor

    public java.lang.Object getEnvPropertyFor(java.lang.reflect.Field fld,
     java.lang.Object value)

    Given a field, figure out which namespace to put its binding in. Specifically, return the appropriate property key to use when importing the field's binding into an Environment: This is null for Scheme (as a Lisp1), but may be the FUNCTION property for languages like CL and Emacs Lisp, for example.

    Overrides:

    getEnvPropertyFor in class Language

    Parameters:

    fld - The field of some module we're importing.

    value - The value of the field (assuming it is constant).

    Returns:

    EnvironmentKey.FUNCTION if this is a function binding or null if this binding has the null property key.

  • getNamespaceOf

    public int getNamespaceOf(Declaration decl)

    Get the namespace of a declaration. Declaration symbols are either in the function or value namespace.

    Overrides:

    getNamespaceOf in class Language

    Parameters:

    decl - The declaration to check

    Returns:

    FUNCTION_NAMESPACE or VALUE_NAMESPACE.

  • asSymbol

    public static java.lang.Object asSymbol(java.lang.String name)

    Get a symbol for a given (interned) Java string.

  • fromLangSymbol

    protected Symbol fromLangSymbol(java.lang.Object obj)

    Overrides:

    fromLangSymbol in class LispLanguage

  • getString

    public static java.lang.Object getString(java.lang.String name)

    Get a string for a given Java string.

  • getString

    public static java.lang.Object getString(Symbol symbol)

    Get a string for a given symbol.

  • defun

    protected void defun(java.lang.String name,
     java.lang.Object value)

  • defun

    protected void defun(Symbol sym,
     java.lang.Object value)

  • importLocation

    protected void importLocation(Location loc)

  • createReadTable

    public ReadTable createReadTable()

    Description copied from class: LispLanguage
    Create a fresh ReadTable appropriate for this language.

    Specified by:

    createReadTable in class LispLanguage

  • getCompilationClass

    public java.lang.String getCompilationClass()

    Overrides:

    getCompilationClass in class LispLanguage