Class | Sass::Engine |
In: |
lib/sass/engine.rb
|
Parent: | Object |
This is the class where all the parsing and processing of the Sass template is done. It can be directly used by the user by creating a new instance and calling render to render the template. For example:
template = File.load('stylesheets/sassy.sass') sass_engine = Sass::Engine.new(template) output = sass_engine.render puts output
ATTRIBUTE_CHAR | = | ?: | The character that begins a CSS attribute. | |
SCRIPT_CHAR | = | ?= | The character that designates that an attribute should be assigned to the result of constant arithmetic. | |
COMMENT_CHAR | = | ?/ | The character that designates the beginning of a comment, either Sass or CSS. | |
SASS_COMMENT_CHAR | = | ?/ | The character that follows the general COMMENT_CHAR and designates a Sass comment, which is not output as a CSS comment. | |
CSS_COMMENT_CHAR | = | ?* | The character that follows the general COMMENT_CHAR and designates a CSS comment, which is embedded in the CSS document. | |
DIRECTIVE_CHAR | = | ?@ | The character used to denote a compiler directive. | |
ESCAPE_CHAR | = | ?\\ | Designates a non-parsed rule. | |
MIXIN_DEFINITION_CHAR | = | ?= | Designates block as mixin definition rather than CSS rules to output | |
MIXIN_INCLUDE_CHAR | = | ?+ | Includes named mixin declared using MIXIN_DEFINITION_CHAR | |
ATTRIBUTE | = | /^:([^\s=:]+)\s*(=?)(?:\s+|$)(.*)/ | The regex that matches and extracts data from attributes of the form :name attr. | |
ATTRIBUTE_ALTERNATE_MATCHER | = | /^[^\s:]+\s*[=:](\s|$)/ | The regex that matches attributes of the form name: attr. | |
ATTRIBUTE_ALTERNATE | = | /^([^\s=:]+)(\s*=|:)(?:\s+|$)(.*)/ | The regex that matches and extracts data from attributes of the form name: attr. |
Creates a new instace of Sass::Engine that will compile the given template string when render is called. See README.rdoc for available options.
# File lib/sass/engine.rb, line 74 74: def initialize(template, options={}) 75: @options = { 76: :style => :nested, 77: :load_paths => ['.'] 78: }.merge! options 79: @template = template.split(/\r\n|\r|\n/) 80: @lines = [] 81: @constants = {"important" => "!important"} 82: @mixins = {} 83: end
Processes the template and returns the result as a string.
# File lib/sass/engine.rb, line 86 86: def render 87: begin 88: render_to_tree.to_s 89: rescue SyntaxError => err 90: unless err.sass_filename 91: err.add_backtrace_entry(@options[:filename]) 92: end 93: raise err 94: end 95: end
# File lib/sass/engine.rb, line 109 109: def render_to_tree 110: split_lines 111: 112: root = Tree::Node.new(@options[:style]) 113: index = 0 114: while @lines[index] 115: old_index = index 116: child, index = build_tree(index) 117: 118: if child.is_a? Tree::Node 119: child.line = old_index + 1 120: root << child 121: elsif child.is_a? Array 122: child.each do |c| 123: root << c 124: end 125: end 126: end 127: @lines.clear 128: 129: root 130: end