gnu.expr
Class ExitExp

java.lang.Object
  extended by gnu.mapping.PropertySet
      extended by gnu.mapping.Procedure
          extended by gnu.mapping.Procedure0
              extended by gnu.expr.Expression
                  extended by gnu.expr.ExitExp
All Implemented Interfaces:
Named, Printable, javax.xml.transform.SourceLocator, org.xml.sax.Locator

public class ExitExp
extends Expression

Expression to exit a lexically surrounding block.


Field Summary
 
Fields inherited from class gnu.expr.Expression
flags, NEXT_AVAIL_FLAG, noExpressions, VALIDATED
 
Fields inherited from class gnu.mapping.Procedure
compilerKey, validateApplyKey
 
Fields inherited from class gnu.mapping.PropertySet
nameKey
 
Constructor Summary
ExitExp(BlockExp block)
           
ExitExp(Expression result, BlockExp block)
           
 
Method Summary
 void apply(CallContext ctx)
          Evaluate the expression.
 void compile(Compilation comp, Target target)
           
protected  Expression deepCopy(IdentityHashTable mapper)
           
 Type getType()
          Return the Type used to represent the values of this Expression.
protected  boolean mustCompile()
           
 void print(OutPort out)
           
protected
<R,D> R
visit(ExpVisitor<R,D> visitor, D d)
           
protected
<R,D> void
visitChildren(ExpVisitor<R,D> visitor, D d)
           
 
Methods inherited from class gnu.expr.Expression
apply0, compile, compile, compileButFirst, compileNotePosition, compileWithPosition, compileWithPosition, deepCopy, deepCopy, deepCopy, eval, eval, getColumnNumber, getFileName, getFlag, getFlags, getLineNumber, getPublicId, getSystemId, isSingleValue, isStableSourceLocation, makeWhile, match0, print, printLineColumn, setFile, setFlag, setFlag, setLine, setLine, setLine, setLine, setLocation, side_effects, toString, validateApply, 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, getReturnType, getSetter, getSourceLocation, isSideEffectFree, match1, match2, match3, match4, matchN, maxArgs, maxArgs, minArgs, 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
 

Constructor Detail

ExitExp

public ExitExp(Expression result,
               BlockExp block)

ExitExp

public ExitExp(BlockExp block)
Method Detail

mustCompile

protected boolean mustCompile()
Specified by:
mustCompile in class Expression

apply

public void apply(CallContext ctx)
           throws java.lang.Throwable
Description copied from class: Expression
Evaluate the expression. This is named apply rather than eval so it is compatible with the full-tail-call calling convention, and we can stash an Expression in CallContext's proc field. FIXME - are we making use of this?

Overrides:
apply in class Expression
Throws:
java.lang.Throwable

compile

public void compile(Compilation comp,
                    Target target)
Specified by:
compile in class Expression

deepCopy

protected Expression deepCopy(IdentityHashTable mapper)
Overrides:
deepCopy in class Expression

visit

protected <R,D> R visit(ExpVisitor<R,D> visitor,
                        D d)
Overrides:
visit in class Expression

visitChildren

protected <R,D> void visitChildren(ExpVisitor<R,D> visitor,
                                   D d)
Overrides:
visitChildren in class Expression

print

public void print(OutPort out)
Specified by:
print in class Expression

getType

public Type getType()
Description copied from class: Expression
Return the Type used to represent the values of this Expression.

Overrides:
getType in class Expression