com.caucho.quercus.expr
Class UnaryNotExpr

java.lang.Object
  extended by com.caucho.quercus.expr.Expr
      extended by com.caucho.quercus.expr.AbstractUnaryExpr
          extended by com.caucho.quercus.expr.UnaryNotExpr
Direct Known Subclasses:
UnaryNotExprPro

public class UnaryNotExpr
extends AbstractUnaryExpr

Represents a PHP boolean negation


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
UnaryNotExpr(Expr expr)
           
UnaryNotExpr(Location location, Expr expr)
           
 
Method Summary
 Value eval(Env env)
          Evaluates the equality as a boolean.
 boolean evalBoolean(Env env)
          Evaluates the equality as a boolean.
 boolean isBoolean()
          Return true as a boolean.
 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, 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
 

Constructor Detail

UnaryNotExpr

public UnaryNotExpr(Location location,
                    Expr expr)

UnaryNotExpr

public UnaryNotExpr(Expr expr)
Method Detail

isBoolean

public boolean isBoolean()
Return true as a boolean.

Overrides:
isBoolean in class Expr

eval

public Value eval(Env env)
Evaluates the equality as a boolean.

Specified by:
eval in class Expr
Parameters:
env - the calling environment.
Returns:
the expression value.

evalBoolean

public boolean evalBoolean(Env env)
Evaluates the equality as a boolean.

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