Class: OrgParse::InlineParser

Inherits:
Racc::Parser
  • Object
show all
Defined in:
lib/org-parse/inline-parser.rb,
lib/org-parse/inline-parser.tab.rb

Overview

行単位の要素を解析する

Constant Summary collapse

Racc_arg = 
[
racc_action_table,
racc_action_check,
racc_action_default,
racc_action_pointer,
racc_goto_table,
racc_goto_check,
racc_goto_default,
racc_goto_pointer,
racc_nt_base,
racc_reduce_table,
racc_token_table,
racc_shift_n,
racc_reduce_n,
racc_use_result_var ]
Racc_token_to_s_table = 
[
'$end',
'error',
'EX_LOW',
'OTHER',
'EX_HIGH',
'EM_OPEN',
'EM_CLOSE',
'LINK_START',
'LINK_END',
'LINK_URI',
'ST_OPEN',
'ST_CLOSE',
'QUOTE',
'FN_LINK',
'FN_START',
'FN_END',
'IT_OPEN',
'IT_CLOSE',
'UL_OPEN',
'UL_CLOSE',
'VERB_OPEN',
'VERB_CLOSE',
'CODE_OPEN',
'CODE_CLOSE',
'EOL',
'$start',
'content',
'elements',
'element',
'emphasis',
'italic',
'under_line',
'code',
'strike',
'verb',
'normal_string_element',
'link',
'quote',
'fn_link',
'fn_define',
'normal_strings',
'link_descs',
'link_desc']
Racc_debug_parser = 
false

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(bp = nil) ⇒ InlineParser

Returns a new instance of InlineParser.



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# File 'lib/org-parse/inline-parser.rb', line 16

def initialize(bp = nil)
  @structp = bp
  @token_que = []
  @footnote_idx = 0
  @footnotes = {}

  # Set up the emphasis regular expression.
  @pre_emphasis = " \t\\('\""
  @post_emphasis = "- \t.,:!?;'\"\\)"
  @border_forbidden = " \t\r\n,\"'"
  @body_regexp = ".*?"
  @markers = "*/_=~+"
  @org_quote_regexp = /@<[^>]+>/
  @org_br_regexp = /\\\\$/
  @org_footnote_regexp = /\[fn:(.+)\]/

  build_org_emphasis_regexp
  build_org_link_regexp
end

Instance Attribute Details

#structp ⇒ Object

Returns the value of attribute structp.



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# File 'lib/org-parse/inline-parser.rb', line 14

def structp
  @structp
end

#token_que ⇒ Object (readonly)

Returns the value of attribute token_que.



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# File 'lib/org-parse/inline-parser.rb', line 13

def token_que
  @token_que
end

Instance Method Details

#_reduce_none(val, _values, result) ⇒ Object 



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# File 'lib/org-parse/inline-parser.tab.rb', line 405

def _reduce_none( val, _values, result )
 result
end

#next_token ⇒ Object 



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# File 'lib/org-parse/inline-parser.rb', line 134

def next_token
  return [false, false] if @token_que.empty?
  # p @token_que[0]
  @token_que.shift
end

#on_error(et, ev, values) ⇒ Object

Raises:

  • (ParseError) 


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# File 'lib/org-parse/inline-parser.rb', line 140

def on_error(et, ev, values)
  message = " #{et} #{ev ? ev : ''} #{values}\n"
  raise ParseError, message
end

#parse(src) ⇒ Object 



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# File 'lib/org-parse/inline-parser.rb', line 36

def parse(src)
  return [] if src.empty?
  @src = src
  @token_que = []
  @yydebug = true
  scan(src)
  do_parse
end

#scan(str, verb = false) ⇒ Object

文字列をトークンに分解し、@token_que にセットする



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# File 'lib/org-parse/inline-parser.rb', line 47

def scan(str, verb = false)
  symbols = { 
    '*' => [:EM_OPEN, :EM_CLOSE], 
    '/' => [:IT_OPEN, :IT_CLOSE],
    '=' => [:CODE_OPEN, :CODE_CLOSE], 
    '~' => [:VERB_OPEN, :VERB_CLOSE], 
    '+' => [:ST_OPEN, :ST_CLOSE], 
    '_' => [:UL_OPEN, :UL_CLOSE], 
  }
  while !str.empty?
    # puts "str:\"#{str}\""
    matches = []
    matches << [:em, Regexp.last_match] if @org_emphasis_regexp =~ str
    matches << [:lt, Regexp.last_match] if @org_link_text_regexp =~ str
    matches << [:ln, Regexp.last_match] if @org_link_regexp =~ str
    matches << [:quote, Regexp.last_match] if @org_quote_regexp =~ str
    matches << [:br, Regexp.last_match] if @org_br_regexp =~ str
    matches << [:fn, Regexp.last_match] if @org_footnote_regexp =~ str

    if matches.empty?
      @token_que << [:OTHER, str]
      str = ''
    else
      # p matches
      m = matches[0]
      matches.each {|i| m = i if m[1].pre_match.size > i[1].pre_match.size }
      # puts '--------------------'
      # p m[1]
      # puts '--------------------'
      lm = m[1]
      case m[0]
      when :em
        if verb
          pre = lm.pre_match + lm[1] + lm[2]
          @token_que << [:OTHER, pre]
          # puts "#{str};#{pre};#{pre.size}"
          str = str[pre.size..-1]
        else
          str = lm[4]+lm.post_match
          symbol = symbols[lm[2]]
          pre = lm.pre_match + lm[1]
          @token_que << [:OTHER, pre] unless pre.empty?
          @token_que << [symbol[0], symbol[0]]
          v = ['=', '~'].include?(lm[2])
          scan(lm[3], v)
          @token_que << [symbol[1], symbol[1]]
        end
      when :lt
        str = lm.post_match
        pre = lm.pre_match
        @token_que << [:OTHER, pre] unless pre.empty?
        @token_que << [:LINK_START, lm[1]]
        scan lm[2], verb
        @token_que << [:LINK_END, :LINK_END]
      when :ln
        str = lm.post_match
        pre = lm.pre_match
        @token_que << [:OTHER, pre] unless pre.empty?
        @token_que << [:LINK_URI, lm[1]]
      when :quote
        str = lm.post_match
        pre = lm.pre_match
        @token_que << [:OTHER, pre] unless pre.empty?
        @token_que << [:QUOTE, lm[0].sub(/^@/,'')]
      when :br
        str = "\n"
        pre = lm.pre_match
        @token_que << [:OTHER, pre] unless pre.empty?
        @token_que << [:QUOTE, "\n"]
      when :fn
        match, nstr = balanced?(lm[1]+']'+lm.post_match, ['[', ']'])
        pre = lm.pre_match
        if match.empty?
          @token_que << [:OTHER, pre + "[fn:"]
          str = lm[1]+']'+lm.post_match
        else
          str = nstr
          @token_que << [:OTHER, pre] unless pre.empty?
          footnote match
        end
      end
    end
    # p str
    # return if str.nil?
  end
end