Package gnu.expr

Class ThisExp

java.lang.Object

gnu.mapping.PropertySet

gnu.mapping.Procedure

gnu.expr.Expression

gnu.expr.AccessExp

gnu.expr.ReferenceExp

gnu.expr.ThisExp

All Implemented Interfaces:

gnu.kawa.format.Printable, Named, SourceLocator, SourceLocator, Locator

public class ThisExp
extends ReferenceExp

Evaluates to the "this" implicit variable. This is currently neither robust nor general. FIXME!

Nested Class Summary

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

SourceLocator.Simple

Field Summary

Fields

Modifier and Type	Field	Description
static final String	THIS_NAME	Non-interned name for implicit 'this' variable.

Fields inherited from class gnu.expr.ReferenceExp

ALLOCATE_ON_STACK_LAST, DONT_DEREFERENCE, PROCEDURE_NAME, TYPE_NAME

Fields inherited from class gnu.expr.AccessExp

NEXT_AVAIL_FLAG, PREFER_BINDING2

Fields inherited from class gnu.expr.Expression

applyMethodExpression, flags, 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
ThisExp()
ThisExp(ClassType type)
ThisExp(Declaration binding)
ThisExp(ScopeExp context)

Method Summary

Modifier and Type	Method	Description
void	apply(CallContext ctx)	Evaluate the expression.
protected final Type	calculateType()
void	compile(Compilation comp, Target target)
ScopeExp	getContextScope()
final boolean	isForContext()	If this is being used to pass the context instance to a Macro.
static ThisExp	makeGivingContext(ScopeExp context)
protected <R, D> R	visit(ExpVisitor<R,D> visitor, D d)

Methods inherited from class gnu.expr.ReferenceExp

deepCopy, getDontDereference, isProcedureName, isSingleValue, isUnknown, mustCompile, print, setDontDereference, setProcedureName, side_effects, toString, validateApply, valueIfConstant

Methods inherited from class gnu.expr.AccessExp

contextDecl, getBinding, getName, getSimpleName, getSymbol, setBinding, setContextDecl, string_name

Methods inherited from class gnu.expr.Expression

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

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

getProperty, removeProperty, setName, setProperty, setProperty, setSymbol

Methods inherited from class java.lang.Object

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

Field Details

THIS_NAME

public static final String THIS_NAME

Non-interned name for implicit 'this' variable.

Constructor Details

ThisExp

public ThisExp()

ThisExp

public ThisExp(ScopeExp context)

ThisExp

public ThisExp(Declaration binding)

ThisExp

public ThisExp(ClassType type)

Method Details

isForContext

public final boolean isForContext()

If this is being used to pass the context instance to a Macro.

apply

public void apply(CallContext ctx)
           throws 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 ReferenceExp

Throws:

Throwable

getContextScope

public ScopeExp getContextScope()

makeGivingContext

public static ThisExp makeGivingContext(ScopeExp context)

compile

public void compile(Compilation comp,
 Target target)

Overrides:

compile in class ReferenceExp

visit

protected <R,
D> R visit(ExpVisitor<R,D> visitor,
 D d)

Overrides:

visit in class ReferenceExp

calculateType

protected final Type calculateType()

Overrides:

calculateType in class ReferenceExp