Class: Textpow::SyntaxNode

Inherits:
Object
  • Object
show all
Defined in:
lib/ver/vendor/textpow.rb

Constant Summary collapse

LITERAL_KEYS = 
[:firstLineMatch, :foldingStartMarker, :foldingStopMarker,
:match, :begin, :content, :fileTypes, :name, :contentName,
:end, :scopeName, :keyEquivalent]
@@syntaxes = 
{}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hash, syntax = nil, name_space = :default) ⇒ SyntaxNode

Returns a new instance of SyntaxNode.



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# File 'lib/ver/vendor/textpow.rb', line 123

def initialize(hash, syntax = nil, name_space = :default)
  @name_space = name_space

  prepare_scope_name(hash[:scopeName])

  @syntax = syntax || self

  hash.each do |key, value|
    case key
    when *LITERAL_KEYS
      send("#{key}=", value)
    when :captures, :beginCaptures, :endCaptures
      send("#{key}=", value.sort)
    when :repository
      parse_repository value
    when :patterns
      create_children value
    else
      # $stderr.puts "Ignoring: #{key} => #{value.to_s.gsub("\n", "\n>>")}" if $DEBUG
    end
  end
end

Instance Attribute Details

#begin ⇒ Object

Returns the value of attribute begin.



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# File 'lib/ver/vendor/textpow.rb', line 118

def begin
  @begin
end

#beginCaptures ⇒ Object

Returns the value of attribute beginCaptures.



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# File 'lib/ver/vendor/textpow.rb', line 118

def beginCaptures
  @beginCaptures
end

#captures ⇒ Object

Returns the value of attribute captures.



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# File 'lib/ver/vendor/textpow.rb', line 118

def captures
  @captures
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/ver/vendor/textpow.rb', line 118

def content
  @content
end

#contentName ⇒ Object

Returns the value of attribute contentName.



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# File 'lib/ver/vendor/textpow.rb', line 118

def contentName
  @contentName
end

#end ⇒ Object

Returns the value of attribute end.



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# File 'lib/ver/vendor/textpow.rb', line 118

def end
  @end
end

#endCaptures ⇒ Object

Returns the value of attribute endCaptures.



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# File 'lib/ver/vendor/textpow.rb', line 118

def endCaptures
  @endCaptures
end

#fileTypes ⇒ Object

Returns the value of attribute fileTypes.



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# File 'lib/ver/vendor/textpow.rb', line 118

def fileTypes
  @fileTypes
end

#firstLineMatch ⇒ Object

Returns the value of attribute firstLineMatch.



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# File 'lib/ver/vendor/textpow.rb', line 118

def firstLineMatch
  @firstLineMatch
end

#foldingStartMarker ⇒ Object

Returns the value of attribute foldingStartMarker.



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# File 'lib/ver/vendor/textpow.rb', line 118

def foldingStartMarker
  @foldingStartMarker
end

#foldingStopMarker ⇒ Object

Returns the value of attribute foldingStopMarker.



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# File 'lib/ver/vendor/textpow.rb', line 118

def foldingStopMarker
  @foldingStopMarker
end

#keyEquivalent ⇒ Object

Returns the value of attribute keyEquivalent.



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# File 'lib/ver/vendor/textpow.rb', line 118

def keyEquivalent
  @keyEquivalent
end

#match ⇒ Object

Returns the value of attribute match.



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# File 'lib/ver/vendor/textpow.rb', line 118

def match
  @match
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/ver/vendor/textpow.rb', line 118

def name
  @name
end

#patterns ⇒ Object

Returns the value of attribute patterns.



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# File 'lib/ver/vendor/textpow.rb', line 118

def patterns
  @patterns
end

#processor ⇒ Object

Returns the value of attribute processor.



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# File 'lib/ver/vendor/textpow.rb', line 118

def processor
  @processor
end

#repository ⇒ Object

Returns the value of attribute repository.



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# File 'lib/ver/vendor/textpow.rb', line 118

def repository
  @repository
end

#scopeName ⇒ Object

Returns the value of attribute scopeName.



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# File 'lib/ver/vendor/textpow.rb', line 118

def scopeName
  @scopeName
end

#syntax ⇒ Object

Returns the value of attribute syntax.



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# File 'lib/ver/vendor/textpow.rb', line 118

def syntax
  @syntax
end

Class Method Details

.load(filename, name_space = :default) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 94

def self.load(filename, name_space = :default)
  filename = filename.to_s

  table =
    case filename
    when /(\.tmSyntax|\.plist)$/
      Plist::parse_xml(filename)
    when /\.json$/i
      JSON.load(File.read(filename))
    when /\.ya?ml$/i
      YAML.load_file(filename)
    when /\.rb$/i
      eval(File.read(filename))
    else
      raise ArgumentError, "Unknown filename extension"
    end

  SyntaxNode.new(table, nil, name_space) if table
end

Instance Method Details

#create_children(patterns) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 182

def create_children(patterns)
  @patterns = []
  syntax = self.syntax

  patterns.each do |pattern|
    if include = pattern[:include]
      @patterns << SyntaxProxy.new(include, syntax)
    else
      @patterns << SyntaxNode.new(pattern, syntax, @name_space)
    end
  end
end

#match_captures(name, match) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 230

def match_captures(name, match)
  matches = []

  if captures = send(name)
    captures.each do |key, value|
      if Symbol === key
        key = key.to_sym
        match_to_key = match.to_index(key)
        matches << [match_to_key, match.offset(key), value[:name]] if match_to_key
      else
        key = key.to_i
        matches << [key, match.offset(key), value[:name]] if key < match.size
      end
    end
  end

  matches
end

#match_end(string, match, position) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 266

def match_end(string, match, position)
  regstring = self.end.clone

  regstring.gsub!(/\\([1-9])/){ match[$1.to_i] }
  regstring.gsub!(/\\k<(.*?)>/){ match[$1.to_sym] }
  regstring = '\\\\' if regstring == '\\'

  Regexp.new(regstring).match(string, position)
end

#match_first(string, position) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 249

def match_first(string, position)
  if self.match
    if match = self.match.match(string, position)
      return [self, match]
    end
  elsif self_begin = self.begin
    if match = self_begin.match(string, position)
      return [self, match]
    end
  elsif self.end
  else
    return match_first_son(string, position)
  end

  nil
end

#match_first_son(string, position) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 276

def match_first_son(string, position)
  return unless patterns
  match = nil

  patterns.each do |pattern|
    tmatch = pattern.match_first(string, position)

    next unless tmatch

    if !match || match[1].offset(0).first > tmatch[1].offset(0).first
      match = tmatch
    end
  end

  return match
end

#parse(string, processor = Processor.new) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 158

def parse(string, processor = Processor.new)
  processor.start_parsing scopeName

  stack = [[self, nil]]
  string.each_line do |line|
    parse_line(stack, line, processor)
  end

  processor.end_parsing self.scopeName
  processor
end

#parse_captures(name, pattern, match, processor) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 195

def parse_captures(name, pattern, match, processor)
  all_starts = []
  all_ends = []

  pattern.match_captures(name, match).each do |group, range, match_name|
    range_first = range.first
    next unless range_first

    range_last = range.last
    next if range_first == range_last

    all_starts << [range_first, group, match_name]
    all_ends   << [range_last, -group, match_name]
  end

  starts = all_starts.sort.reverse
  ends = all_ends.sort.reverse

  until starts.empty? && ends.empty?
    if starts.empty?
      pos, key, name = ends.pop
      processor.close_tag name, pos
    elsif ends.empty?
      pos, key, name = starts.pop
      processor.open_tag name, pos
    elsif ends.last[1].abs < starts.last[1]
      pos, key, name = ends.pop
      processor.close_tag name, pos
    else
      pos, key, name = starts.pop
      processor.open_tag name, pos
    end
  end
end

#parse_line(stack, line, processor) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 293

def parse_line(stack, line, processor)
  processor.new_line(line)
  top, match = stack.last
  position = 0

  while true
    if top.patterns
      pattern, pattern_match = top.match_first_son(line, position)
    else
      pattern, pattern_match = nil
    end

    end_match = nil

    if top.end
      end_match = top.match_end(line, match, position)
    end

    if end_match && ( !pattern_match || pattern_match.offset(0).first >= end_match.offset(0).first )
      pattern_match = end_match
      pattern_match_first_offset = pattern_match.offset(0)
      start_pos = pattern_match_first_offset.first
      end_pos = pattern_match_first_offset.last

      top_contentName = top.contentName
      processor.close_tag top_contentName, start_pos if top_contentName

      parse_captures :captures, top, pattern_match, processor
      parse_captures :endCaptures, top, pattern_match, processor

      top_name = top.name
      processor.close_tag top_name, end_pos if top_name

      stack.pop
      top, match = stack.last
    else
      break unless pattern

      start_pos = pattern_match.offset(0).first
      end_pos = pattern_match.offset(0).last
      pattern_name = pattern.name

      if pattern.begin
        processor.open_tag pattern_name, start_pos if pattern_name
        parse_captures :captures, pattern, pattern_match, processor
        parse_captures :beginCaptures, pattern, pattern_match, processor

        pattern_contentName = pattern.contentName
        processor.open_tag pattern_contentName, end_pos if pattern_contentName

        top = pattern
        match = pattern_match
        stack << [top, match]
      elsif pattern.match
        processor.open_tag pattern_name, start_pos if pattern_name
        parse_captures :captures, pattern, pattern_match, processor
        processor.close_tag pattern_name, end_pos if pattern_name
      end
    end

    if position >= end_pos
      # raise "Parser didn't move forward on line: %p" % [line]
      return
    else
      position = end_pos
    end
  end
end

#parse_repository(repository) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 170

def parse_repository(repository)
  @repository = {}

  repository.each do |key, value|
    if include = value[:include]
      @repository[key] = SyntaxProxy.new(include, self.syntax)
    else
      @repository[key] = SyntaxNode.new(value, self.syntax, @name_space)
    end
  end
end

#prepare_scope_name(scopeName) ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 146

def prepare_scope_name(scopeName)
  @@syntaxes[@name_space] ||= {}

  return unless scopeName

  @@syntaxes[@name_space][scopeName] = self
end

#syntaxes ⇒ Object 



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# File 'lib/ver/vendor/textpow.rb', line 154

def syntaxes
  @@syntaxes[@name_space]
end