com.caucho.quercus.expr
Class ArrayIsSetExpr

java.lang.Object
  extended by com.caucho.quercus.expr.Expr
      extended by com.caucho.quercus.expr.ArrayIsSetExpr
Direct Known Subclasses:
ArrayIssetExprPro

public class ArrayIsSetExpr
extends Expr

Represents a PHP array is set expression.


Field Summary
protected  Expr _expr
           
protected  Expr _index
           
 
Fields inherited from class com.caucho.quercus.expr.Expr
COMPILE_ARG_MAX
 
Constructor Summary
ArrayIsSetExpr(Expr expr, Expr index)
           
ArrayIsSetExpr(Location location, Expr expr, Expr index)
           
 
Method Summary
 Value eval(Env env)
          Evaluates the expression.
 boolean evalBoolean(Env env)
          Evaluates the expression.
 boolean isBoolean()
          Returns true if the expression evaluates to a boolean.
 java.lang.String toString()
           
 
Methods inherited from class com.caucho.quercus.expr.Expr
assign, canRead, createAssign, createAssignFrom, createAssignRef, createCall, createClassConst, createClassField, createClassField, createCopy, createDeref, createFieldGet, createFieldGet, createIsset, createRef, createUnset, evalArg, evalArgs, evalArray, evalArrayAssign, evalAssignRef, evalAssignValue, evalChar, evalConstant, evalConstantPrefix, evalConstantSuffix, evalCopy, evalDirty, evalDouble, evalIsset, evalLong, evalObject, evalPostIncrement, evalPreIncrement, evalRef, evalString, evalStringValue, evalTop, evalUnsetArray, evalValue, evalVar, getFileName, getFunctionLocation, getLine, getLocation, getLocationLine, isArray, isAssign, isConstant, isDouble, isFalse, isLiteral, isLong, isNumber, isRef, isString, isTrue, isVar, print
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

_expr

protected final Expr _expr

_index

protected final Expr _index
Constructor Detail

ArrayIsSetExpr

public ArrayIsSetExpr(Location location,
                      Expr expr,
                      Expr index)

ArrayIsSetExpr

public ArrayIsSetExpr(Expr expr,
                      Expr index)
Method Detail

isBoolean

public boolean isBoolean()
Description copied from class: Expr
Returns true if the expression evaluates to a boolean.

Overrides:
isBoolean 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.

evalBoolean

public boolean evalBoolean(Env env)
Evaluates the expression.

Overrides:
evalBoolean in class Expr
Parameters:
env - the calling environment.
Returns:
the expression value.

toString

public java.lang.String toString()
Overrides:
toString in class Expr