kawa.lang
Class PatternScope

java.lang.Object
  gnu.mapping.PropertySet
      gnu.mapping.Procedure
          gnu.mapping.Procedure0
              gnu.expr.Expression
                  gnu.expr.ScopeExp
                      gnu.expr.LetExp
                          kawa.lang.PatternScope

All Implemented Interfaces:

Named, Printable, SourceLocator, org.xml.sax.Locator

public class PatternScope
extends LetExp

Bindings from a syntax-case/syntax-rules pattern.

Field Summary

Declaration	matchArray
java.util.Vector	pattern_names Currently visible macro pattern names.
java.lang.StringBuffer	patternNesting Nesting of currently visible macro pattern names.

Fields inherited from class gnu.expr.LetExp

body, inits

Fields inherited from class gnu.expr.ScopeExp

frameSize, id, outer

Fields inherited from class gnu.expr.Expression

flags, NEXT_AVAIL_FLAG, noExpressions

Constructor Summary

PatternScope()

Method Summary

static void	pop(Translator tr)
static PatternScope	push(Translator tr)

Methods inherited from class gnu.expr.LetExp

apply, compile, getBody, getType, mustCompile, print, print, setBody, walk, walkChildren, walkInitializers

Methods inherited from class gnu.expr.ScopeExp

add, add, addDeclaration, addDeclaration, addDeclaration, countDecls, currentLambda, currentModule, duplicateDeclarationError, firstDecl, getDefine, getNoDefine, getVarScope, lookup, lookup, nesting, popScope, remove, remove, replaceFollowing, setIndexes, toString

Methods inherited from class gnu.expr.Expression

apply0, compile, compile, compileButFirst, compileNotePosition, compileWithPosition, compileWithPosition, eval, eval, getColumnNumber, getFileName, getFlag, getFlags, getLineNumber, getPublicId, getSystemId, inline, isStableSourceLocation, makeWhile, match0, print, printLineColumn, setFile, setFlag, setFlag, setLine, setLine, setLine, setLine, setLocation, side_effects, valueIfConstant

Methods inherited from class gnu.mapping.Procedure0

apply1, apply2, apply3, apply4, applyN, numArgs

Methods inherited from class gnu.mapping.Procedure

apply, check0, check1, check2, check3, check4, checkArgCount, checkN, getSetter, getSourceLocation, match1, match2, match3, match4, matchN, maxArgs, minArgs, set0, set1, setN, setSetter, setSourceLocation

Methods inherited from class gnu.mapping.PropertySet

getName, getProperty, getSymbol, removeProperty, setName, setProperty, setProperty, setSymbol

Methods inherited from class java.lang.Object

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

Field Detail

pattern_names

public java.util.Vector pattern_names

Currently visible macro pattern names. For the i'th pattern variable, pattern_names.elementAt(i) is the name of the variable,

patternNesting

public java.lang.StringBuffer patternNesting

Nesting of currently visible macro pattern names. For the i'th pattern variable, (int) patternNesting.charAt(i)/2 is the nesting (in terms of number of ellipsis that indicate the variable is repeated). The low-order bit indicates that if matched value is the car of the value saved in the vars array.

matchArray

public Declaration matchArray

Constructor Detail

PatternScope

public PatternScope()

Method Detail

push

public static PatternScope push(Translator tr)

pop

public static void pop(Translator tr)