 Download[comment]: # (This file is part of PcGen, PHP Code Generation support package. Copyright 2020 Kjell-Inge Gustafsson, kigkonsult, All rights reserved, licence GPL 3.0)
TernaryNullCoalesceMgr
The `TernaryNullCoalesceMgr` class manages
* The ternary operator expression 'expr1 ? expr2 : expr3'
evaluates to expr2 if expr1 evaluates to TRUE and expr3 if expr1 evaluates to FALSE.
* The ternary operator expression 'expr1 ?: expr3' returns expr1 if expr1 evaluates to TRUE and expr3 otherwise.
* The (PHP7+) null coalescing operator expression 'expr1 ?? expr2' evaluates to expr2 if expr1 is NULL, and expr1 otherwise.
In particular, this operator does not emit a notice
if the left-hand side value does not exist, just like isset().
This is especially useful on array keys.
* Expression defind as one of
simple expression i.e. constant, variable or class property (array)
method/function invoke, opt with arguments,
no support for dynamic methodNames, $this->{$method}
-
used by [AssignClauseMgr] and [ReturnClauseMgr]
-
The result expression is enclosed in parenthesis.
TernaryNullCoalesceMgr Methods
Inherited [Common methods]
* ```expr1``` _string_|[EntityMgr]|[FcnInvokeMgr]
* ```expr2``` _string_|[EntityMgr]|[FcnInvokeMgr]
* ```expr3``` _string_|[EntityMgr]|[FcnInvokeMgr]
* Return _static_
* Throws _InvalidArgumentException_
---
-
Return _array_, result code rows (null-bytes removed) no trailing eol
-
Throws _RuntimeException_
* Return _string_ with code rows (extends toArray), each code row with trailing eol
* Throws _RuntimeException_
---
* Return [EntityMgr]|[FcnInvokeMgr]
* Return [EntityMgr]|[FcnInvokeMgr]
* Return [EntityMgr]|[FcnInvokeMgr]
Example :
TernaryNullCoalesceMgr::factory( 'var1', 'var2', 'var3' )->toString();
Result :
Example :
TernaryNullCoalesceMgr::factory( 'var1', null, 'var3' )->toString();
Result :
Example :
TernaryNullCoalesceMgr::factory( 'var1', 'var2' )
->setTernaryOperator( false )
->toString();
Result :
---
<small>Return to [README] - [Summary]</small>
[AssignClauseMgr]:AssignClauseMgr.md
[EntityMgr]:EntityMgr.md
[Common methods]:CommonMethods.md
[FcnInvokeMgr]:FcnInvokeMgr.md
[README]:../README.md
[ReturnClauseMgr]:ReturnClauseMgr.md
[Summary]:Summary.md
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