/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
public override Value evalRef(Env env)
{
Value value = _value.evalCopy(env);
_var.evalAssignValue(env, value);
// php/03d9, php/03mk
return(_var.eval(env));
}
/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
public Value evalCopy(Env env)
{
if (_test.evalBoolean(env))
{
return(_trueExpr.evalCopy(env));
}
else
{
return(_falseExpr.evalCopy(env));
}
}
/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
public Value eval(Env env)
{
Value value = _test.eval(env);
if (value.toBoolean())
{
return(value.copy()); // php/03cj, php/03ck
}
else
{
return(_falseExpr.evalCopy(env)); // php/03cl
}
}
/**
* Evaluates as an array index assign ($a[index] = value).
*/
public override Value evalArrayAssign(Env env, Expr indexExpr, Expr valueExpr)
{
Value obj = env.getThis();
StringValue name = evalName(env);
Value fieldVar = obj.getThisFieldArray(env, name);
Value index = indexExpr.eval(env);
Value value = valueExpr.evalCopy(env);
// php/03mn
return(fieldVar.putThisFieldArray(env, obj, name, index, value));
}
/**
* Evaluates as an array index assign ($a[index] = value).
*/
public override Value evalArrayAssign(Env env, Expr indexExpr, Expr valueExpr)
{
init();
Value obj = env.getThis();
if (obj.isNull())
{
return(env.thisError(getLocation()));
}
// php/044i
Value fieldVar = obj.getThisFieldArray(env, _name);
Value index = indexExpr.eval(env);
Value value = valueExpr.evalCopy(env);
return(fieldVar.putThisFieldArray(env, obj, _name, index, value));
}
/**
* Evaluates as an array index assign ($a[index] = value).
* @return what was assigned
*/
public Value evalArrayAssign(Env env, Expr indexExpr, Expr valueExpr)
{
// php/03mk, php/03mm, php/03mn, php/04b3
// overrided in ThisFieldExpr and ThisFieldVarExpr
//Value var = eval(env);
//
//return var.put(index, value);
Value array = evalArray(env);
Value index = indexExpr.eval(env);
Value value = valueExpr.evalCopy(env);
Value result = array.put(index, value);
//return array.get(index); // php/03mm php/03mn
return(result);
}
/**
* Evaluates an assignment. The value must not be a Var.
*/
public Value evalAssignValue(Env env, Expr valueExpr)
{
Value value = valueExpr.evalCopy(env);
return(evalAssignValue(env, value));
}