Class: GmailSearchSyntax::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/gmail_search_syntax/parser.rb

Constant Summary collapse

OPERATORS = 
%w[
  from to cc bcc subject after before older newer older_than newer_than
  label category has list filename in is deliveredto size larger smaller
  rfc822msgid
].freeze

Instance Method Summary collapse

Constructor Details

#initialize(tokens) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/gmail_search_syntax/parser.rb', line 9

def initialize(tokens)
  @tokens = tokens
  @position = 0
end

Instance Method Details

#parse! ⇒ Object 



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# File 'lib/gmail_search_syntax/parser.rb', line 14

def parse!
  children = []

  until eof?
    node = parse_expression
    children << node if node
  end

  if children.empty?
    raise GmailSearchSyntax::EmptyQueryError, "Query cannot be empty"
  end

  children.first
end