On Sep 27, 2008, at 4:21 AM, Brice Figureau wrote:
>
> The expressions can be used in if 'test' and in the
> right side of assignements.
>
> The expressions can contain any number of sub-expressions
> combined by either arithmetic operators, comparison operators,
> or boolean operators.
>
> Random Usage Examples:
> $result = ((( $two + 2) / $one) + 4 * 5.45) - (6 << 7) + (0x800 + -9)
> or
> if ($a < 10) and ($a + 10 != 200) {
> ...
> }
Sweet.
> [...]
> -# Currently we only support a single value, but eventually one
> assumes
> -# we'll support operators and such.
> -iftest: rvalue
> +# Unlike yacc/bison, it seems racc
> +# gives tons of shift/reduce warnings
> +# with the following syntax:
> +#
> +# expression: ...
> +# | expression arithop expressio { ... }
> +#
> +# arithop: PLUS | MINUS | DIVIDE | TIMES ...
> +#
> +# So I had to develop the expression by adding one rule
> +# per operator :-(
Not so sweet. :/ Yay racc.
>
> casestatement: CASE rvalue LBRACE caseopts RBRACE {
> options = val[3]
> diff --git a/lib/puppet/parser/lexer.rb b/lib/puppet/parser/lexer.rb
> index 71210d9..5dd036e 100644
> --- a/lib/puppet/parser/lexer.rb
> +++ b/lib/puppet/parser/lexer.rb
> @@ -126,12 +126,22 @@ class Puppet::Parser::Lexer
> '\\' => :BACKSLASH,
> '=>' => :FARROW,
> '+>' => :PARROW,
> + '+' => :PLUS,
> + '-' => :MINUS,
> + '/' => :DIV,
> + '*' => :TIMES,
> + '<<' => :LSHIFT,
> + '>>' => :RSHIFT,
> %r{([a-z][-\w]*::)+[a-z][-\w]*} => :CLASSNAME,
> %r{((::){0,1}[A-Z][-\w]*)+} => :CLASSREF
> )
>
> TOKENS.add_tokens "Whatever" => :DQTEXT, "Nomatter" => :SQTEXT,
> "alsonomatter" => :BOOLEAN
>
> + TOKENS.add_token :NUMBER, %r{\b(?:0[xX][0-9A-Fa-f]+|0?\d+(?:\.\d
> +)?(?:[eE]-?\d+)?)\b} do |lexer, value|
> + [TOKENS[:NAME], value]
> + end
> +
Went all out, didn't you? :)
--
Real freedom lies in wildness, not in civilization.
-- Charles Lindbergh
---------------------------------------------------------------------
Luke Kanies | http://reductivelabs.com | http://madstop.com
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Puppet Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/puppet-dev?hl=en
-~----------~----~----~----~------~----~------~--~---
