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# Scripting.ActionVariableAssignIfNotExist

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    class ActionVariableAssignIfNotExist extends Action;

    var() actionnoresolve Name lhs;
    var() String rhs;

    // execute
    latent function Variable execute()
    {
    	local Variable vLhs;
    	local class<Variable> newClass;

    	Super.execute();

    	vLhs = tryFindVariable(lhs);
    	if (vLhs == None)
    	{
    		// If variable not found, create new Variable based on the type of the rhs

    		if (InStr(lhs, ".") != -1) // can't create variables in other scripts
    		{
    			logError("You can only create variables that reside within the current script (variable "$lhs$" not found)");
    			return None;
    		}

    		class'Variable'.static.bestVariableClass(rhs, newClass);
    		vLhs = newVariable(lhs, newClass);

    		// only assign if variable was just created
    		vLhs.SetPropertyText("value", rhs);
    	}

    	return None;
    }

    // editorDisplayString
    function editorDisplayString(out string s)
    {
    	s = propertyDisplayString('lhs') $ " = " $ propertyDisplayString('rhs') $ " (if not exist)";
    }

    defaultproperties
    {
    	returnType			= None
    	actionDisplayName	= "Assign (If Not Exist)"
    	actionHelp			= "Assigns one variable to another, but only if the variable did not exist and had to be created."
    	category			= "Variable"
    	acceptAllTypes		= true
    }

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Class file time: ne 5.9.2004 15:53:42.000 - Creation time: st 23.5.2018 00:10:40.738 - Created with UnCodeX