[ET Trac] [Einstein Toolkit] #1303: document syntax of new parameter file parser

[Einstein Toolkit]

#1303: document syntax of new parameter file parser
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  Reporter:  rhaas   |       Owner:  sbrandt   
      Type:  defect  |      Status:  assigned  
  Priority:  major   |   Milestone:  ET_2013_05
 Component:  Cactus  |     Version:            
Resolution:          |    Keywords:            
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Comment (by rhaas):

 For unaries the statement makes no sense. They have to associate to the
 right since this is the only argument they have. I think my (I added the
 docs) statement for unary operators is nonsensical since they always have
 to associate like this (since I don't think I ever supported postfix
 operators)
 {{{
 - ++i = -(++i)
 }}}
 which is association to the right. It also allowed (I think) normally
 disallowed things like:
 {{{
 a * -b == a * (-b) and
 a + - b == a + (-b)
 }}}
 .For {{{'**'}}} I had
 {{{
 a**b**c == (a**b)**c
 }}}
 while normally one would have
 {{{
 a**b**c == a**(b**c)
 }}}
 . I assume your parser does the "normal" ordering anyway. NOTE: the "old"
 parser is still going to be used for some parts of the code when
 ParameterSet is called directly.

-- 
Ticket URL: <https://trac.einsteintoolkit.org/ticket/1303#comment:4>
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