com.caucho.quercus.expr
Class VarExpr

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

Direct Known Subclasses:

VarExprPro, VarTempExpr

public class VarExpr
extends AbstractVarExpr

Represents a PHP variable expression.

Field Summary

protected StringValue

_name

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

COMPILE_ARG_MAX

Constructor Summary

protected	VarExpr(Location location, VarInfo var)
protected	VarExpr(VarInfo var)

Method Summary

void	assign(QuercusParser parser) Creates the assignment.
Expr	copy(Location location) Copy for things like $a .= "test";
Expr	createAssign(QuercusParser parser, Expr value) Creates the assignment.
Expr	createAssignRef(QuercusParser parser, Expr value) Creates the assignment.
boolean	equals(java.lang.Object o)
Value	eval(Env env) Evaluates the expression.
Value	evalArg(Env env, boolean isTop) Evaluates the expression.
Value	evalArray(Env env) Evaluates the expression, converting to an array if unset.
Value	evalAssignRef(Env env, Value value) Evaluates the expression.
Value	evalAssignValue(Env env, Value value) Evaluates the expression.
Value	evalCopy(Env env) Evaluates the expression.
boolean	evalIsset(Env env) Evaluates the expression as an isset() statement.
Value	evalObject(Env env) Evaluates the expression, converting to an object if is unset, NULL, or is a string.
Value	evalTop(Env env) Evaluates the expression.
void	evalUnset(Env env) Evaluates the expression.
Var	evalVar(Env env) Evaluates the expression.
java.lang.String	getJavaVar() Returns the java variable name.
StringValue	getName() Returns the variable name.
VarInfo	getVarInfo() Returns the variable info.
int	hashCode()
java.lang.String	toString()

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

createCopy, createRef, createUnset, evalRef, isVar

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

canRead, createAssignFrom, createCall, createClassConst, createClassField, createClassField, createDeref, createFieldGet, createFieldGet, createIsset, evalArgs, evalArrayAssign, evalBoolean, evalChar, evalConstant, evalConstantPrefix, evalConstantSuffix, evalDirty, evalDouble, evalLong, evalPostIncrement, evalPreIncrement, evalString, evalStringValue, evalUnsetArray, 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, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

_name

protected final StringValue _name

Constructor Detail

VarExpr

protected VarExpr(Location location,
                  VarInfo var)

VarExpr

protected VarExpr(VarInfo var)

Method Detail

getVarInfo

public VarInfo getVarInfo()

Returns the variable info.

getName

public StringValue getName()

Returns the variable name.

getJavaVar

public java.lang.String getJavaVar()

Returns the java variable name.

copy

public Expr copy(Location location)

Copy for things like $a .= "test";

Parameters:

location -

createAssign

public Expr createAssign(QuercusParser parser,
                         Expr value)

Creates the assignment.

Overrides:

createAssign in class AbstractVarExpr

assign

public void assign(QuercusParser parser)

Creates the assignment.

Overrides:

assign in class AbstractVarExpr

createAssignRef

public Expr createAssignRef(QuercusParser parser,
                            Expr value)

Creates the assignment.

Overrides:

createAssignRef in class AbstractVarExpr

eval

public Value eval(Env env)

Evaluates the expression.

Specified by:

eval in class AbstractVarExpr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalTop

public Value evalTop(Env env)

Evaluates the expression.

Overrides:

evalTop in class Expr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalIsset

public boolean evalIsset(Env env)

Evaluates the expression as an isset() statement.

Overrides:

evalIsset in class Expr

evalCopy

public Value evalCopy(Env env)

Evaluates the expression.

Overrides:

evalCopy in class AbstractVarExpr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalArray

public Value evalArray(Env env)

Evaluates the expression, converting to an array if unset.

Overrides:

evalArray in class AbstractVarExpr

Parameters:

env - the calling environment.

Returns:

the expression value.

evalObject

public Value evalObject(Env env)

Evaluates the expression, converting to an object if is unset, NULL, or is a string.

Overrides:

evalObject 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.

evalAssignValue

public Value evalAssignValue(Env env,
                             Value value)

Evaluates the expression. The value must not be a Var.

Overrides:

evalAssignValue in class AbstractVarExpr

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.

evalUnset

public void evalUnset(Env env)

Evaluates the expression.

Specified by:

evalUnset in class AbstractVarExpr

Parameters:

env - the calling environment.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class Expr