gnu.expr
Class ThisExp

java.lang.Object
  gnu.mapping.Procedure
      gnu.mapping.Procedure0
          gnu.expr.Expression
              gnu.expr.AccessExp
                  gnu.expr.ReferenceExp
                      gnu.expr.ThisExp

All Implemented Interfaces:

Named, Printable

public class ThisExp
extends ReferenceExp

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

Field Summary

static java.lang.String

THIS_NAME Non-interned name for implicit 'this' variable.

Fields inherited from class gnu.expr.ReferenceExp

CREATE_FIELD_REFERENCE, DONT_DEREFERENCE, PREFER_BINDING2, PROCEDURE_NAME

Fields inherited from class gnu.expr.Expression

flags, NEXT_AVAIL_FLAG, noExpressions

Constructor Summary

ThisExp()

ThisExp(ClassType type)

ThisExp(Declaration binding)

ThisExp(ScopeExp context)

Method Summary

void	compile(Compilation comp, Target target)
java.lang.Object	eval(Environment env)
ScopeExp	getContextScope()
Type	getType() Return the Type used to represent the values of this Expression.
boolean	isForContext() If this is being used to pass the context instance to a Macro.
static ThisExp	makeGivingContext(ScopeExp context)
protected Expression	walk(ExpWalker walker)

Methods inherited from class gnu.expr.ReferenceExp

getDontDereference, isProcedureName, print, setDontDereference, setProcedureName, toString

Methods inherited from class gnu.expr.AccessExp

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

Methods inherited from class gnu.expr.Expression

apply, apply0, compile, compileButFirst, compileNotePosition, compileWithPosition, compileWithPosition, eval, getColumn, getFile, getFlag, getFlags, getLine, makeWhile, match0, print, printLineColumn, setFile, setFlag, setFlag, setLine, setLine, setLine, setLine, walkChildren

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, getProperty, getSetter, match1, match2, match3, match4, matchN, maxArgs, minArgs, name, removeProperty, set0, set1, setN, setName, setProperty, setProperty, setSetter, setSymbol

Methods inherited from class java.lang.Object

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

Field Detail

THIS_NAME

public static final java.lang.String THIS_NAME

Non-interned name for implicit 'this' variable.

Constructor Detail

ThisExp

public ThisExp()

ThisExp

public ThisExp(ScopeExp context)

ThisExp

public ThisExp(Declaration binding)

ThisExp

public ThisExp(ClassType type)

Method Detail

isForContext

public final boolean isForContext()

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

eval

public java.lang.Object eval(Environment env)

Overrides:

eval in class ReferenceExp

getContextScope

public ScopeExp getContextScope()

makeGivingContext

public static ThisExp makeGivingContext(ScopeExp context)

compile

public void compile(Compilation comp,
                    Target target)

Overrides:

compile in class ReferenceExp

walk

protected Expression walk(ExpWalker walker)

Overrides:

walk in class ReferenceExp

getType

public final Type getType()

Description copied from class: Expression

Return the Type used to represent the values of this Expression.

Overrides:

getType in class ReferenceExp