com.caucho.quercus.expr
Class UnaryRefExpr

java.lang.Object
  com.caucho.quercus.expr.Expr
      com.caucho.quercus.expr.AbstractUnaryExpr
          com.caucho.quercus.expr.UnaryRefExpr

Direct Known Subclasses:

UnaryRefExprPro

public class UnaryRefExpr
extends AbstractUnaryExpr

Represents a PHP reference argument.

Field Summary

Fields inherited from class com.caucho.quercus.expr.AbstractUnaryExpr

_expr

Fields inherited from class com.caucho.quercus.expr.Expr

COMPILE_ARG_MAX

Constructor Summary

UnaryRefExpr(Expr expr)

UnaryRefExpr(Location location, Expr expr)

Method Summary

Expr	createAssignFrom(QuercusParser parser, AbstractVarExpr leftHandSide) Creates an assignment using this value as the right hand side.
Value	eval(Env env) Evaluates the expression.
Value	evalArg(Env env, boolean isTop) Evaluates the expression.
Var	evalVar(Env env) Evaluates the expression.
boolean	isRef() Returns true for a reference.
java.lang.String	toString()

Methods inherited from class com.caucho.quercus.expr.AbstractUnaryExpr

getExpr

Methods inherited from class com.caucho.quercus.expr.Expr

assign, canRead, createAssign, createAssignRef, createCall, createClassConst, createClassField, createClassField, createCopy, createDeref, createFieldGet, createFieldGet, createIsset, createRef, createUnset, evalArgs, evalArray, evalArrayAssign, evalAssignRef, evalAssignValue, evalBoolean, evalChar, evalConstant, evalConstantPrefix, evalConstantSuffix, evalCopy, evalDirty, evalDouble, evalIsset, evalLong, evalObject, evalPostIncrement, evalPreIncrement, evalRef, evalString, evalStringValue, evalTop, evalUnsetArray, evalValue, getFileName, getFunctionLocation, getLine, getLocation, getLocationLine, isArray, isAssign, isBoolean, isConstant, isDouble, isFalse, isLiteral, isLong, isNumber, isString, isTrue, isVar, print

Methods inherited from class java.lang.Object

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

Constructor Detail

UnaryRefExpr

public UnaryRefExpr(Location location,
                    Expr expr)

UnaryRefExpr

public UnaryRefExpr(Expr expr)

Method Detail

isRef

public boolean isRef()

Returns true for a reference.

Overrides:

isRef in class Expr

createAssignFrom

public Expr createAssignFrom(QuercusParser parser,
                             AbstractVarExpr leftHandSide)

Creates an assignment using this value as the right hand side.

Overrides:

createAssignFrom in class Expr

eval

public Value eval(Env env)

Evaluates the expression.

Specified by:

eval in class Expr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalArg

public Value evalArg(Env env,
                     boolean isTop)

Evaluates the expression.

Overrides:

evalArg in class Expr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalVar

public Var evalVar(Env env)

Evaluates the expression.

Overrides:

evalVar in class Expr

Parameters:

env - the calling environment.

Returns:

the expression value.

toString

public java.lang.String toString()

Overrides:

toString in class Expr