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gnu.expr

Class BlockExp

Implemented Interfaces:
org.xml.sax.Locator, Named, Printable, SourceLocator
public class BlockExp
extends Expression
Class used to implement a block that can be exited.

Field Summary

Fields inherited from class gnu.expr.Expression

NEXT_AVAIL_FLAG, flags, noExpressions

Method Summary

void
apply(CallContext ctx)
Evaluate the expression.
void
compile(Compilation comp, Target target)
protected boolean
mustCompile()
void
print(OutPort out)
void
setBody(Expression body)
void
setBody(Expression body, Expression exitBody)
protected Expression
walk(ExpWalker walker)
protected void
walkChildren(ExpWalker walker)

Methods inherited from class gnu.expr.Expression

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

Methods inherited from class gnu.mapping.Procedure0

apply0, apply1, apply2, apply3, apply4, applyN, numArgs

Methods inherited from class gnu.mapping.Procedure

apply, apply, apply0, apply1, apply2, apply3, apply4, applyN, check0, check1, check2, check3, check4, checkArgCount, checkN, getSetter, getSourceLocation, match0, match1, match2, match3, match4, matchN, maxArgs, minArgs, numArgs, set0, set1, setN, setSetter, setSourceLocation, toString

Methods inherited from class gnu.mapping.PropertySet

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

Method Details

apply

public void apply(CallContext ctx)
            throws Throwable
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 interface Expression

compile

public void compile(Compilation comp,
                    Target target)
Overrides:
compile in interface Expression

mustCompile

protected boolean mustCompile()
Overrides:
mustCompile in interface Expression

print

public void print(OutPort out)
Overrides:
print in interface Expression

setBody

public void setBody(Expression body)

setBody

public void setBody(Expression body,
                    Expression exitBody)

walk

protected Expression walk(ExpWalker walker)
Overrides:
walk in interface Expression

walkChildren

protected void walkChildren(ExpWalker walker)
Overrides:
walkChildren in interface Expression

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