com.caucho.quercus.expr
Class ObjectFieldExpr

java.lang.Object
  com.caucho.quercus.expr.Expr
      com.caucho.quercus.expr.AbstractVarExpr
          com.caucho.quercus.expr.ObjectFieldExpr

Direct Known Subclasses:

ObjectFieldExprPro

public class ObjectFieldExpr
extends AbstractVarExpr

Represents a PHP field reference.

Field Summary

protected StringValue	_name
protected Expr	_objExpr

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

COMPILE_ARG_MAX

Constructor Summary

ObjectFieldExpr(Expr objExpr, StringValue name)

ObjectFieldExpr(Location location, Expr objExpr, StringValue name)

Method Summary

Expr	createCall(QuercusParser parser, Location location, java.util.ArrayList<Expr> args) Creates a function call expression
Value	eval(Env env) Evaluates the expression.
Value	evalArg(Env env, boolean isTop) Evaluates the expression.
Value	evalArray(Env env) Evaluates the expression, creating an array if the field is unset.
Value	evalAssignRef(Env env, Value value) Evaluates the expression.
Value	evalDirty(Env env) Evaluates the expression, with the object expected to be modified, e.g.
boolean	evalIsset(Env env) Evaluates the expression as an isset() statement.
Value	evalObject(Env env) Evaluates the expression, creating an object if the field is unset.
Value	evalPostIncrement(Env env, int incr) Handles post increments.
Value	evalPreIncrement(Env env, int incr) Handles post increments.
void	evalUnset(Env env) Evaluates the expression.
void	evalUnsetArray(Env env, Value index) Evaluates the expression as an array index unset
Var	evalVar(Env env) Evaluates the expression.
java.lang.String	toString()

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

assign, createAssign, createAssignRef, createCopy, createRef, createUnset, evalAssignValue, evalCopy, evalRef, isVar

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

canRead, createAssignFrom, createClassConst, createClassField, createClassField, createDeref, createFieldGet, createFieldGet, createIsset, evalArgs, evalArrayAssign, evalBoolean, evalChar, evalConstant, evalConstantPrefix, evalConstantSuffix, evalDouble, evalLong, evalString, evalStringValue, evalTop, evalValue, getFileName, getFunctionLocation, getLine, getLocation, getLocationLine, isArray, isAssign, isBoolean, isConstant, isDouble, isFalse, isLiteral, isLong, isNumber, isRef, isString, isTrue, print

Methods inherited from class java.lang.Object

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

Field Detail

_objExpr

protected final Expr _objExpr

_name

protected final StringValue _name

Constructor Detail

ObjectFieldExpr

public ObjectFieldExpr(Location location,
                       Expr objExpr,
                       StringValue name)

ObjectFieldExpr

public ObjectFieldExpr(Expr objExpr,
                       StringValue name)

Method Detail

createCall

public Expr createCall(QuercusParser parser,
                       Location location,
                       java.util.ArrayList<Expr> args)
                throws java.io.IOException

Creates a function call expression

Overrides:

createCall in class Expr

Throws:

java.io.IOException

eval

public Value eval(Env env)

Evaluates the expression.

Specified by:

eval in class AbstractVarExpr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalVar

public Var evalVar(Env env)

Evaluates the expression.

Specified by:

evalVar in class AbstractVarExpr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalArg

public Value evalArg(Env env,
                     boolean isTop)

Evaluates the expression.

Overrides:

evalArg in class AbstractVarExpr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalDirty

public Value evalDirty(Env env)

Description copied from class: Expr

Evaluates the expression, with the object expected to be modified, e.g. from an unset.

Overrides:

evalDirty in class Expr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalAssignRef

public Value evalAssignRef(Env env,
                           Value value)

Evaluates the expression.

Specified by:

evalAssignRef in class AbstractVarExpr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalPostIncrement

public Value evalPostIncrement(Env env,
                               int incr)

Handles post increments.

Overrides:

evalPostIncrement in class Expr

evalPreIncrement

public Value evalPreIncrement(Env env,
                              int incr)

Handles post increments.

Overrides:

evalPreIncrement in class Expr

evalArray

public Value evalArray(Env env)

Evaluates the expression, creating an array if the field is unset.

Overrides:

evalArray in class AbstractVarExpr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalObject

public Value evalObject(Env env)

Evaluates the expression, creating an object if the field is unset.

Overrides:

evalObject in class AbstractVarExpr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalUnset

public void evalUnset(Env env)

Evaluates the expression.

Specified by:

evalUnset in class AbstractVarExpr

Parameters:

env - the calling environment.

evalUnsetArray

public void evalUnsetArray(Env env,
                           Value index)

Evaluates the expression as an array index unset

Overrides:

evalUnsetArray in class Expr

toString

public java.lang.String toString()

Overrides:

toString in class Expr

evalIsset

public boolean evalIsset(Env env)

Description copied from class: Expr

Evaluates the expression as an isset() statement.

Overrides:

evalIsset in class Expr