HEREDOC end of line or similar
example: writing a dsl that expresses some facts
increase "coding" experience one level until 'next summer'
This can right now be done in different ways
- make the whole thing a string and parse it
- increase.experience('coding').one_level.until('next summer')
- increase "'coding' experience one level until 'next summer'"
Another nice alternative would be a heredoc type that operates to the end of the line (i couldn't find existing implementations for perl and ruby)
Example1: increase <<* "coding" experience one level until "next summer" Example2: increase <<< "coding" experience one level until "next summer" def increase(str) # the rest of the line is passed as a string
Although it looks not very elegant for a DSL it would to the job. of course something more unobtrusive would be better, but i don't know how difficult this would be for the parser. e.g.:
def increase(~str); end
When a method has ~ attribute it could automatically read the rest of the line as string when invoked (or when used with method call brackets to the closing bracket). Invoke like:
increase "coding" experience one level until "next summer"
increase("coding" experience one level until "next summer")
- ~ attributes always as last attribute: def increase(a,b,~str); end ** Invoke like: increase "val1", "val2", the rest is a string ** In this case the rest str should have a leading " "
Summary: First possibility (heredoc like) would allow for neat(er) looking dsl's. The second possibility (~attributes, not sure if this is doable) would allow for a VERY neat looking DSL's. Both for sure also would increase the interest in string parsing ;-)
Updated by shyouhei (Shyouhei Urabe) over 7 years ago
- Status changed from Assigned to Rejected
"def increase(~str)" is technically impossible so please let me
reject this. However I think "<<<" can be possible. If you still
need that, please open another ticket for that part.