Class: BetterHtml::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/better_html/parser.rb

Defined Under Namespace

Classes: Error

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(buffer, template_language: :html) ⇒ Parser

Returns a new instance of Parser.

Raises:

  • (ArgumentError) 


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# File 'lib/better_html/parser.rb', line 23

def initialize(buffer, template_language: :html)
  raise ArgumentError, 'first argument must be Parser::Source::Buffer' unless buffer.is_a?(::Parser::Source::Buffer)
  @buffer = buffer
  @template_language = template_language
  @erb = case template_language
  when :html
    Tokenizer::HtmlErb.new(@buffer)
  when :lodash
    Tokenizer::HtmlLodash.new(@buffer)
  when :javascript
    Tokenizer::JavascriptErb.new(@buffer)
  else
    raise ArgumentError, "template_language can be :html or :javascript"
  end
end

Instance Attribute Details

#template_language ⇒ Object (readonly)

Returns the value of attribute template_language.



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# File 'lib/better_html/parser.rb', line 11

def template_language
  @template_language
end

Instance Method Details

#ast ⇒ Object 



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# File 'lib/better_html/parser.rb', line 44

def ast
  @ast ||= build_document_node
end

#inspect ⇒ Object 



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# File 'lib/better_html/parser.rb', line 57

def inspect
  "#<#{self.class.name} ast=#{ast.inspect}>"
end

#nodes_with_type(*type) ⇒ Object 



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# File 'lib/better_html/parser.rb', line 39

def nodes_with_type(*type)
  types = Array.wrap(type)
  ast.children.select{ |node| node.is_a?(::AST::Node) && types.include?(node.type) }
end

#parser_errors ⇒ Object 



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# File 'lib/better_html/parser.rb', line 48

def parser_errors
  @erb.parser.errors.map do |error|
    Error.new(
      error.message,
      location: Tokenizer::Location.new(@buffer, error.position, error.position + 1)
    )
  end
end