Package gnu.expr

Class IfExp

java.lang.Object

gnu.mapping.PropertySet

gnu.mapping.Procedure

gnu.expr.Expression

gnu.expr.IfExp

All Implemented Interfaces:

gnu.kawa.format.Printable, Named, SourceLocator, javax.xml.transform.SourceLocator, org.xml.sax.Locator

public class IfExp
extends Expression

This class represents a conditional.

Nested Class Summary

Nested classes/interfaces inherited from interface gnu.text.SourceLocator

SourceLocator.Simple

Field Summary

Fields inherited from class gnu.expr.Expression

applyMethodExpression, flags, NEXT_AVAIL_FLAG, noExpressions, type, VALIDATED

Fields inherited from class gnu.mapping.Procedure

applyMethodType, applyToConsumerDefault, applyToConsumerMethod, applyToObjectDefault, applyToObjectMethod, compilerKey, compilerXKey, inlineIfConstantSymbol, validateApplyKey, validateXApplyKey

Fields inherited from class gnu.mapping.PropertySet

nameKey

Constructor Summary

Constructors

Constructor	Description
IfExp(Expression i, Expression t, Expression e)

Method Summary

Modifier and Type	Method	Description
void	apply(CallContext ctx)	Evaluate the expression.
protected Type	calculateType()
void	compile(Compilation comp, Target target)
static void	compile(Expression test, Expression then_clause, Expression else_clause, Compilation comp, Target target)
Expression	getElseClause()
protected Language	getLanguage()
Expression	getTest()
Expression	getThenClause()
protected boolean	mustCompile()
void	print(gnu.kawa.io.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

applyMethodExpression, checkLiteralKeyword, compile, compile, compileWithPosition, compileWithPosition, deepCopy, deepCopy, deepCopy, deepCopy, eval, eval, getColumnNumber, getEndColumn, getEndLine, getFileName, getFlag, getFlags, getLineNumber, getPublicId, getStartColumn, getStartLine, getSystemId, getType, getTypeRaw, isSingleValue, isStableSourceLocation, makeWhile, maybeSetLine, neverReturns, numArgs, print, printLineColumn, setFile, setFlag, setFlag, setLine, setLine, setLine, setLine, setLine, setLocation, setType, side_effects, toString, validateApply, valueIfConstant

Methods inherited from class gnu.mapping.Procedure

apply0, apply1, apply2, apply3, apply4, applyL, applyN, applyToConsumerDefault, applyToObjectDefault, checkArgCount, checkBadCode, getApplyMethod, getApplyToConsumerMethod, getApplyToObjectMethod, getReturnType, getSetter, getSourceLocation, isSideEffectFree, lookupApplyHandle, 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

IfExp

public IfExp(Expression i,
             Expression t,
             Expression e)

Method Detail

getTest

public Expression getTest()

getThenClause

public Expression getThenClause()

getElseClause

public Expression getElseClause()

getLanguage

protected final Language getLanguage()

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

compile

public static void compile(Expression test,
                           Expression then_clause,
                           Expression else_clause,
                           Compilation comp,
                           Target target)

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

calculateType

protected Type calculateType()

Overrides:

calculateType in class Expression

print

public void print(gnu.kawa.io.OutPort out)

Specified by:

print in class Expression