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add comment and remove newline from space (starting a long whitespace battle)

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This commit is contained in:
Torsten Ruger 2014-05-08 18:38:49 +03:00
parent 4c585e415b
commit 034ae4f7ca
1 changed files with 13 additions and 4 deletions
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17
lib/parser/basic_types.rb
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@ -4,9 +4,15 @@ module Parser
# floats ? # floats ?
module BasicTypes module BasicTypes
include Parslet include Parslet
rule(:space) { match('\s').repeat(1) } # space really is just space. ruby is newline sensitive, so there is more whitespace footwork
# rule of thumb is that anything eats space behind it, but only space, no newlines
rule(:space) { (str('\t') | str(' ')).repeat(1) }
rule(:space?) { space.maybe } rule(:space?) { space.maybe }
rule(:eol) { (str("\n") >> space?) | any.absent? } rule(:newline){ str('\n') }
rule(:comment){ match('#') >> (newline.absent? >> any).repeat.as(:comment) >> newline }
rule(:eol) { (newline >> space?) | any.absent? }
rule(:double_quote){ str('"') } rule(:double_quote){ str('"') }
rule(:minus) { str('-') } rule(:minus) { str('-') }
@ -24,15 +30,18 @@ module Parser
# identifier must start with lower case # identifier must start with lower case
rule(:name) { (match['a-z'] >> match['a-zA-Z0-9'].repeat).as(:name) >> space? } rule(:name) { (match['a-z'] >> match['a-zA-Z0-9'].repeat).as(:name) >> space? }
rule(:string_special) { match['\0\t\n\r"\\\\'] }
rule(:escaped_special) { str("\\") >> match['0tnr"\\\\'] }
#anything in double quotes #anything in double quotes
rule(:string){ rule(:string){
double_quote >> double_quote >>
( double_quote.absent? >> any ).repeat.as(:string) >> ( escaped_special | string_special.absent? >> any ).repeat.as(:string) >>
double_quote >> space? double_quote >> space?
} }
rule(:integer) { sign.maybe >> digit.repeat(1).as(:integer) >> space? } rule(:integer) { sign.maybe >> digit.repeat(1).as(:integer) >> space? }
rule(:float) { integer >> dot >> integer >> rule(:float) { integer >> dot >> integer >>
(exponent >> sign.maybe >> digit.repeat).maybe >> space?} (exponent >> sign.maybe >> digit.repeat(1,3)).maybe >> space?}
end end
end end