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more basic types (untested)

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Torsten Ruger 2014-04-27 18:12:32 +03:00
parent 4e4099e552
commit d8f228da11
1 changed files with 24 additions and 1 deletions
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25
lib/parser/basic_types.rb
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@ -1,9 +1,32 @@
module Parser
# Basic types are numbers and strings
# later maybe arrays and hashes
# floats ?
module BasicTypes
include Parslet
rule(:space) { match('\s').repeat(1) }
rule(:space?) { space.maybe }
rule(:name) { match('[a-z]').repeat(1).as(:name) >> space? }
rule(:number) { match('[0-9]').repeat(1).as(:number) >> space? }
rule(:double_quote){ str('"') }
rule(:minus) { str('-') }
rule(:plus) { str('+') }
rule(:sign) { plus | minus }
rule(:dot) { str('.') }
rule(:digit) { match('[0-9]') }
rule(:exponent) { (str('e')| str('E')) }
rule(:escaped_character) { str('\\') >> (match('["\\\\/bfnrt]') | (str('u') >> hexdigit.repeat(4,4))) }
rule(:true) { str('true').as(:true) }
rule(:false) { str('false').as(:false) }
rule(:nil) { str('null').as(:nil) }
#anything in double quotes
rule(:string){
double_quote >> (escaped_character | double_quote.absent? >> any ).repeat.as(:string) >> double_quote
}
rule(:integer) { sign.maybe >> digit.repeat(1).as(:integer) >> space? }
rule(:float) { integer >> dot >> integer >>
(exponent >> sign.maybe >> digit.repeat).maybe}
end
end