Package kawa.lang

Class Quote

java.lang.Object

kawa.lang.Syntax

kawa.lang.Quote

All Implemented Interfaces:

gnu.kawa.format.Printable, Named

Direct Known Subclasses:

syntax

public class Quote
extends Syntax

The Syntax transformer that re-writes the "quote" "quasiquote" primitive. In both cases recursively resolves SyntaxForm wrappers and resolves namespaces of symbols. In the case of quasiquote also handles unquoting.

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	isQuasi	True for quasiquote; false for plain quote.
static Quote	plainQuote
static Quote	quasiQuote
protected static int	QUOTE_DEPTH	An initial value for 'depth' for plain (non-quasi) quote.

Constructor Summary

Constructors

Constructor	Description
Quote(java.lang.String name, boolean isQuasi)

Method Summary

Modifier and Type	Method	Description
static java.lang.Object	append$V(java.lang.Object[] args)	Same as regular append, but handle SyntaxForm wrappers.
protected Expression	coerceExpression(java.lang.Object val, Translator tr)
static java.lang.Object	consX$V(java.lang.Object[] args)	A wrapper around LList.consX to make it a "variable-arg method".
protected java.lang.Object	expand(java.lang.Object template, int depth, Translator tr)
protected boolean	expandColonForms()
protected Expression	leaf(java.lang.Object val, Translator tr)
static Symbol	makeSymbol(Namespace ns, java.lang.Object local)
protected boolean	matchesQuasiQuote(java.lang.Object form, SyntaxForm syntax, Translator tr)
protected boolean	matchesUnquote(Pair pair, SyntaxForm syntax, Translator tr)
protected boolean	matchesUnquoteSplicing(Pair pair, SyntaxForm syntax, Translator tr)
static java.lang.Object	quote(java.lang.Object obj)	Quote an object (without namespace-expansion).
static java.lang.Object	quote(java.lang.Object obj, Translator tr)	Quote an object (without namespace-expansion).
Expression	rewrite(java.lang.Object obj, Translator tr)	Re-write an expression that is an "application" of this Syntax object.

Methods inherited from class kawa.lang.Syntax

getName, getSymbol, print, rewriteForm, scanForDefinitions, scanForm, setName, setName

Methods inherited from class java.lang.Object

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

Field Detail

plainQuote

public static final Quote plainQuote

quasiQuote

public static final Quote quasiQuote

QUOTE_DEPTH

protected static final int QUOTE_DEPTH

An initial value for 'depth' for plain (non-quasi) quote.

See Also:

Constant Field Values

isQuasi

protected boolean isQuasi

True for quasiquote; false for plain quote.

Constructor Detail

Quote

public Quote(java.lang.String name,
             boolean isQuasi)

Method Detail

matchesUnquote

protected boolean matchesUnquote(Pair pair,
                                 SyntaxForm syntax,
                                 Translator tr)

matchesUnquoteSplicing

protected boolean matchesUnquoteSplicing(Pair pair,
                                         SyntaxForm syntax,
                                         Translator tr)

matchesQuasiQuote

protected boolean matchesQuasiQuote(java.lang.Object form,
                                    SyntaxForm syntax,
                                    Translator tr)

expand

protected java.lang.Object expand(java.lang.Object template,
                                  int depth,
                                  Translator tr)

quote

public static java.lang.Object quote(java.lang.Object obj,
                                     Translator tr)

Quote an object (without namespace-expansion). Basically just recursively removes SyntaxForm wrappers.

quote

public static java.lang.Object quote(java.lang.Object obj)

Quote an object (without namespace-expansion). Basically just recursively removes SyntaxForm wrappers.

coerceExpression

protected Expression coerceExpression(java.lang.Object val,
                                      Translator tr)

leaf

protected Expression leaf(java.lang.Object val,
                          Translator tr)

expandColonForms

protected boolean expandColonForms()

makeSymbol

public static Symbol makeSymbol(Namespace ns,
                                java.lang.Object local)

rewrite

public Expression rewrite(java.lang.Object obj,
                          Translator tr)

Description copied from class: Syntax

Re-write an expression that is an "application" of this Syntax object.

Overrides:

rewrite in class Syntax

Parameters:

obj - the arguments to this "application" (i.e. the cdr of the macro/builtin invocation)

tr - the Translator that provides context

Returns:

the re-written expression

consX$V

public static java.lang.Object consX$V(java.lang.Object[] args)

A wrapper around LList.consX to make it a "variable-arg method".

append$V

public static java.lang.Object append$V(java.lang.Object[] args)

Same as regular append, but handle SyntaxForm wrappers.