Module: CEML::Lexer

Includes:
Treetop::Runtime
Included in:
Casting, Instructions, LexerParser, Scripts
Defined in:
lib/ceml/tt/lexer.rb

Defined Under Namespace

Modules: Comment0, Eol0, Nl0, Number0, Text0

Instance Method Summary collapse

Instance Method Details

#_nt_comment ⇒ Object 



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# File 'lib/ceml/tt/lexer.rb', line 174

def _nt_comment
  start_index = index
  if node_cache[:comment].has_key?(index)
    cached = node_cache[:comment][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  if has_terminal?('//', false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 2))
    @index += 2
  else
    terminal_parse_failure('//')
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_text
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Comment0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:comment][start_index] = r0

  r0
end

#_nt_eol ⇒ Object 



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# File 'lib/ceml/tt/lexer.rb', line 211

def _nt_eol
  start_index = index
  if node_cache[:eol].has_key?(index)
    cached = node_cache[:eol][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0 = index
  i1, s1 = index, []
  if has_terminal?("\r", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure("\r")
    r2 = nil
  end
  s1 << r2
  if r2
    if has_terminal?("\n", false, index)
      r4 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure("\n")
      r4 = nil
    end
    if r4
      r3 = r4
    else
      r3 = instantiate_node(SyntaxNode,input, index...index)
    end
    s1 << r3
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(Eol0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    if has_terminal?("\n", false, index)
      r5 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure("\n")
      r5 = nil
    end
    if r5
      r0 = r5
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:eol][start_index] = r0

  r0
end

#_nt_id ⇒ Object 



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# File 'lib/ceml/tt/lexer.rb', line 358

def _nt_id
  start_index = index
  if node_cache[:id].has_key?(index)
    cached = node_cache[:id][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    if has_terminal?('\G[a-zA-Z_-]', true, index)
      next_character = index + input[index..-1].match(/\A(.)/um).end(1)
      r1 = true
      @index = next_character
    else
      r1 = nil
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  if s0.empty?
    @index = i0
    r0 = nil
  else
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  end

  node_cache[:id][start_index] = r0

  r0
end

#_nt_nl ⇒ Object 



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# File 'lib/ceml/tt/lexer.rb', line 77

def _nt_nl
  start_index = index
  if node_cache[:nl].has_key?(index)
    cached = node_cache[:nl][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    i1, s1 = index, []
    r3 = _nt_ws
    if r3
      r2 = r3
    else
      r2 = instantiate_node(SyntaxNode,input, index...index)
    end
    s1 << r2
    if r2
      r5 = _nt_comment
      if r5
        r4 = r5
      else
        r4 = instantiate_node(SyntaxNode,input, index...index)
      end
      s1 << r4
      if r4
        r6 = _nt_eol
        s1 << r6
      end
    end
    if s1.last
      r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
      r1.extend(Nl0)
    else
      @index = i1
      r1 = nil
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  if s0.empty?
    @index = i0
    r0 = nil
  else
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  end

  node_cache[:nl][start_index] = r0

  r0
end

#_nt_number ⇒ Object 



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# File 'lib/ceml/tt/lexer.rb', line 277

def _nt_number
  start_index = index
  if node_cache[:number].has_key?(index)
    cached = node_cache[:number][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0 = index
  i1, s1 = index, []
  s2, i2 = [], index
  loop do
    if has_terminal?('\G[1-9]', true, index)
      next_character = index + input[index..-1].match(/\A(.)/um).end(1)
      r3 = true
      @index = next_character
    else
      r3 = nil
    end
    if r3
      s2 << r3
    else
      break
    end
  end
  if s2.empty?
    @index = i2
    r2 = nil
  else
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
  end
  s1 << r2
  if r2
    s4, i4 = [], index
    loop do
      if has_terminal?('\G[0-9]', true, index)
        next_character = index + input[index..-1].match(/\A(.)/um).end(1)
        r5 = true
        @index = next_character
      else
        r5 = nil
      end
      if r5
        s4 << r5
      else
        break
      end
    end
    r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
    s1 << r4
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(Number0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    if has_terminal?('0', false, index)
      r6 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure('0')
      r6 = nil
    end
    if r6
      r0 = r6
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:number][start_index] = r0

  r0
end

#_nt_text ⇒ Object 



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# File 'lib/ceml/tt/lexer.rb', line 15

def _nt_text
  start_index = index
  if node_cache[:text].has_key?(index)
    cached = node_cache[:text][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    i1, s1 = index, []
    i2 = index
    r3 = _nt_eol
    if r3
      r2 = nil
    else
      @index = i2
      r2 = instantiate_node(SyntaxNode,input, index...index)
    end
    s1 << r2
    if r2
      if index < input_length
        next_character = index + input[index..-1].match(/\A(.)/um).end(1)
        r4 = instantiate_node(SyntaxNode,input, index...next_character)
        @index = next_character
      else
        terminal_parse_failure("any character")
        r4 = nil
      end
      s1 << r4
    end
    if s1.last
      r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
      r1.extend(Text0)
    else
      @index = i1
      r1 = nil
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  if s0.empty?
    @index = i0
    r0 = nil
  else
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  end

  node_cache[:text][start_index] = r0

  r0
end

#_nt_ws ⇒ Object 



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# File 'lib/ceml/tt/lexer.rb', line 133

def _nt_ws
  start_index = index
  if node_cache[:ws].has_key?(index)
    cached = node_cache[:ws][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    if has_terminal?('\G[ \\t\\f]', true, index)
      next_character = index + input[index..-1].match(/\A(.)/um).end(1)
      r1 = true
      @index = next_character
    else
      r1 = nil
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  if s0.empty?
    @index = i0
    r0 = nil
  else
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  end

  node_cache[:ws][start_index] = r0

  r0
end

#root ⇒ Object 



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# File 'lib/ceml/tt/lexer.rb', line 8

def root
  @root || :text
end