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- Subject: Newbie questions
- From: "carol.hurwitz" <carol.hurwitz@...>
- Date: Mon, 26 Sep 2005 08:40:44 -0400
I am working on a master's thesis in which I working with a group that
has been developing tools that extend the lex/yacc (flex/bison)
capabilities. One of those extensions is to handle significant
whitespace, which appears in modern languages such as python and
and thus newlines become significant. I will be writing flex/bison
type files, adapted to our format. The name of the project is
Harmonia.[www.cs.berkeley.edu/~harmonia]. We are also working on
handling embedded languages, and lua provides us with a good language
for testing our tools.
At the moment I am looking at lua from a theoretical point of view,
rather than as a programmer. I have written almost no code. I hope to
introduce a junior/senior level course in my department with some game
programming, at which time, I will have to have actually learned to
program in lua. But not until I finish this project!!
1. What is the difference between chunk and block grammatically? My
understanding is that chunk is the start symbol and that you view a
"program" as a chunk, not a block. Within all the productions, only
block is used, but since it is defined as a chunk, I don't really
understand the intention or the precise meaning of the grammar.
2. Somewhere it is stated that a #-line can be the first line in a
chunk so that it can be run as a lua script. The definition of block
would mean that you could have such statements sprinkled throughout the
the code, i.e., wherever there is a block. Is that what is intended?
And is it used that way?
3. How do you do line continuation? Do you use '\'?
4. Is there a nice little starter set of examples that I could look at?
Other than what is in the manual?