Class: Middleman::Renderers::Sass::SassPlusCSSFilenameTemplate

Inherits:
Tilt::SassTemplate
  • Object
show all
Defined in:
middleman-core/lib/middleman-core/renderers/sass.rb

Overview

A SassTemplate for Tilt which outputs debug messages

Direct Known Subclasses

ScssPlusCSSFilenameTemplate

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ SassPlusCSSFilenameTemplate


38
39
40
41
42
# File 'middleman-core/lib/middleman-core/renderers/sass.rb', line 38

def initialize(*args, &block)
  super

  @context = @options[:context] if @options.key?(:context)
end

Instance Method Details

#evaluate(context, _) ⇒ String

Add exception messaging


55
56
57
58
59
60
61
62
63
64
65
66
67
# File 'middleman-core/lib/middleman-core/renderers/sass.rb', line 55

def evaluate(context, _)
  @context ||= context

  @engine = ::SassC::Engine.new(data, sass_options)

  begin
    @engine.render
  rescue ::SassC::SyntaxError => e
    raise e if @context.app.build?

    exception_to_css(e)
  end
end

#exception_to_css(e) ⇒ Object


69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
# File 'middleman-core/lib/middleman-core/renderers/sass.rb', line 69

def exception_to_css(e)
  header = "#{e.class}: #{e.message}"

  <<~END
    /*
    #{header.gsub('*/', '*\\/')}

    Backtrace:\n#{e.backtrace.join("\n").gsub('*/', '*\\/')}
    */
    body:before {
      white-space: pre;
      font-family: monospace;
      content: "#{header.gsub('"', '\"').gsub("\n", '\\A ')}"; }
  END
end

#prepareObject


50
# File 'middleman-core/lib/middleman-core/renderers/sass.rb', line 50

def prepare; end

#sass_optionsHash

Change Sass path, for url functions, to the build folder if we're building


95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
# File 'middleman-core/lib/middleman-core/renderers/sass.rb', line 95

def sass_options
  ctx = @context

  preexisting_load_paths = begin
    ::Sass.load_paths
                           rescue StandardError
                             []
  end

  more_opts = {
    load_paths: preexisting_load_paths + ctx.app.config[:sass_assets_paths],
    filename: eval_file,
    line: line,
    syntax: syntax,
    cache_location: ctx.app.config[:sass_cache_location],
    custom: {}.merge!(options[:custom] || {}).merge!(
      middleman_context: ctx.app,
      current_resource: ctx.current_resource
    )
  }

  if ctx.app.config[:sass_source_maps] || (ctx.app.config[:sass_source_maps].nil? && ctx.app.development?)
    more_opts[:source_map_file] = '.'
    more_opts[:source_map_embed] = true
    more_opts[:source_map_contents] = true
  end

  more_opts[:css_filename] = file.sub(/\.s[ac]ss$/, '') if ctx.is_a?(::Middleman::TemplateContext) && file

  {}.merge!(options).merge!(more_opts)
end

#syntaxSymbol

Define the expected syntax for the template


46
47
48
# File 'middleman-core/lib/middleman-core/renderers/sass.rb', line 46

def syntax
  :sass
end

#verticesObject


85
86
87
88
89
90
91
# File 'middleman-core/lib/middleman-core/renderers/sass.rb', line 85

def vertices
  @engine.dependencies.reduce(::Hamster::Set.empty) do |sum, d|
    sum << ::Middleman::Dependencies::FileVertex.new(@context.app.root_path, d.filename.to_sym)
  end
rescue ::SassC::NotRenderedError
  ::Hamster::Set.empty
end