Class: Code::Parser::Function

Inherits:
Language
  • Object
show all
Defined in:
lib/code/parser/function.rb

Instance Method Summary collapse

Instance Method Details

#ampersand ⇒ Object 



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# File 'lib/code/parser/function.rb', line 82

def ampersand
  str("&")
end

#asterisk ⇒ Object 



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# File 'lib/code/parser/function.rb', line 78

def asterisk
  str("*")
end

#begin_keyword ⇒ Object 



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# File 'lib/code/parser/function.rb', line 34

def begin_keyword
  str("begin") << separator.present
end

#body ⇒ Object 



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# File 'lib/code/parser/function.rb', line 112

def body
  (
    (begin_keyword | do_keyword).ignore << whitespace << code <<
      (whitespace? << end_keyword).maybe.ignore
  ) |
    (
      opening_curly_bracket.ignore << whitespace? << code <<
        (whitespace? << closing_curly_bracket).maybe.ignore
    ) | (code << (whitespace? << end_keyword).maybe.ignore)
end

#closing_curly_bracket ⇒ Object 



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# File 'lib/code/parser/function.rb', line 74

def closing_curly_bracket
  str("}")
end

#closing_parenthesis ⇒ Object 



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# File 'lib/code/parser/function.rb', line 50

def closing_parenthesis
  str(")")
end

#code ⇒ Object 



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# File 'lib/code/parser/function.rb', line 10

def code
  Code
end

#code_present ⇒ Object 



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# File 'lib/code/parser/function.rb', line 14

def code_present
  Code.new.present
end

#colon ⇒ Object 



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# File 'lib/code/parser/function.rb', line 54

def colon
  str(":")
end

#comma ⇒ Object 



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# File 'lib/code/parser/function.rb', line 58

def comma
  str(",")
end

#do_keyword ⇒ Object 



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# File 'lib/code/parser/function.rb', line 30

def do_keyword
  str("do") << separator.present
end

#end_keyword ⇒ Object 



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# File 'lib/code/parser/function.rb', line 38

def end_keyword
  str("end") << separator.present
end

#equal ⇒ Object 



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# File 'lib/code/parser/function.rb', line 62

def equal
  str("=")
end

#greater ⇒ Object 



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# File 'lib/code/parser/function.rb', line 66

def greater
  str(">")
end

#keyword_parameter ⇒ Object 



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# File 'lib/code/parser/function.rb', line 92

def keyword_parameter
  name.aka(:name) << whitespace? << colon.aka(:keyword) <<
    code_present.aka(:default).maybe
end

#name ⇒ Object 



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# File 'lib/code/parser/function.rb', line 6

def name
  Name
end

#opening_curly_bracket ⇒ Object 



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# File 'lib/code/parser/function.rb', line 70

def opening_curly_bracket
  str("{")
end

#opening_parenthesis ⇒ Object 



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# File 'lib/code/parser/function.rb', line 46

def opening_parenthesis
  str("(")
end

#parameter ⇒ Object 



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# File 'lib/code/parser/function.rb', line 102

def parameter
  keyword_parameter | regular_parameter
end

#parameters ⇒ Object 



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# File 'lib/code/parser/function.rb', line 106

def parameters
  opening_parenthesis.ignore << whitespace? <<
    (whitespace? << parameter << (whitespace? << comma).maybe).repeat <<
    (whitespace? << closing_parenthesis.ignore).maybe
end

#prefix ⇒ Object 



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# File 'lib/code/parser/function.rb', line 86

def prefix
  (asterisk << asterisk).aka(:keyword_splat) |
    asterisk.aka(:regular_splat) | ampersand.aka(:block) |
    spread_operator.aka(:spread)
end

#regular_parameter ⇒ Object 



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# File 'lib/code/parser/function.rb', line 97

def regular_parameter
  ((prefix.maybe << name.aka(:name)) | prefix) << whitespace? <<
    (equal << whitespace? << code_present.aka(:default)).maybe
end

#root ⇒ Object 



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# File 'lib/code/parser/function.rb', line 123

def root
  (
    parameters.aka(:parameters) << whitespace? << equal << greater <<
      whitespace? << body.aka(:body)
  ).aka(:function) | Dictionary
end

#separator ⇒ Object 



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# File 'lib/code/parser/function.rb', line 26

def separator
  Name.new.separator
end

#spread_operator ⇒ Object 



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# File 'lib/code/parser/function.rb', line 42

def spread_operator
  str("...") | str("..") | str(".")
end

#whitespace ⇒ Object 



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# File 'lib/code/parser/function.rb', line 18

def whitespace
  Whitespace
end

#whitespace? ⇒ Boolean

Returns:



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# File 'lib/code/parser/function.rb', line 22

def whitespace?
  whitespace.maybe
end