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常量

ENCODING_TAG = Regexp.new("\\A(<%#{ENCODING_FLAG}-?%>)[ \\t]*")
 

类公共方法

call(template, source)

来源: 显示 | 在 GitHub 上

# File actionview/lib/action_view/template/handlers/erb.rb, line 29
def self.call(template, source)
  new.call(template, source)
end

实例公共方法

call(template, source)

来源: 显示 | 在 GitHub 上

# File actionview/lib/action_view/template/handlers/erb.rb, line 61
def call(template, source)
  # First, convert to BINARY, so in case the encoding is
  # wrong, we can still find an encoding tag
  # (<%# encoding %>) inside the String using a regular
  # expression
  template_source = source.b

  erb = template_source.gsub(ENCODING_TAG, "")
  encoding = $2

  erb.force_encoding valid_encoding(source.dup, encoding)

  # Always make sure we return a String in the default_internal
  erb.encode!

  # Strip trailing newlines from the template if enabled
  erb.chomp! if strip_trailing_newlines

  options = {
    escape: (self.class.escape_ignore_list.include? template.type),
    trim: (self.class.erb_trim_mode == "-")
  }

  if ActionView::Base.annotate_rendered_view_with_filenames && template.format == :html
    options[:preamble] = "@output_buffer.safe_append='<!-- BEGIN #{template.short_identifier} -->';"
    options[:postamble] = "@output_buffer.safe_append='<!-- END #{template.short_identifier} -->';@output_buffer"
  end

  self.class.erb_implementation.new(erb, options).src
end

handles_encoding?()

来源: 显示 | 在 GitHub 上

# File actionview/lib/action_view/template/handlers/erb.rb, line 37
def handles_encoding?
  true
end

supports_streaming?()

来源: 显示 | 在 GitHub 上

# File actionview/lib/action_view/template/handlers/erb.rb, line 33
def supports_streaming?
  true
end

translate_location(spot, backtrace_location, source)

将 ErrorHighlight 返回的错误位置转换为模板中正确的源位置。

来源: 显示 | 在 GitHub 上

# File actionview/lib/action_view/template/handlers/erb.rb, line 43
def translate_location(spot, backtrace_location, source)
  # Tokenize the source line
  tokens = ::ERB::Util.tokenize(source.lines[backtrace_location.lineno - 1])
  new_first_column = find_offset(spot[:snippet], tokens, spot[:first_column])
  lineno_delta = spot[:first_lineno] - backtrace_location.lineno
  spot[:first_lineno] -= lineno_delta
  spot[:last_lineno] -= lineno_delta

  column_delta = spot[:first_column] - new_first_column
  spot[:first_column] -= column_delta
  spot[:last_column] -= column_delta
  spot[:script_lines] = source.lines

  spot
rescue NotImplementedError, LocationParsingError
  nil
end