CSS Selector Handling

Similar to #10 (closed) Oga should be able to handle CSS selectors for #9 (closed) . These will be built on top of XPath selectors. That is, a given CSS selector will be compiled into its XPath equivalent.

For this the following has to be added:

• Lexer
• Parser
• XPath compiler
  • :root
  • :nth-child()
  • :nth-last-child()
  • :nth-of-type()
  • :nth-last-of-type()
  • :first-child
  • :last-child
  • :first-of-type
  • :last-of-type
  • :only-child
  • :only-of-type
  • :empty
  • :link: specific to web browsers
  • :visited: specific to web browsers
  • :active: specific to web browsers
  • :hover: specific to web browsers
  • :focus: specific to web browsers
  • :target: specific to web browsers
  • :lang(): specific to web browsers, little use outside of them
  • :enabled: specific to web browsers
  • :disabled: specific to web browsers
  • :checked: specific to web browsers
  • ::first-line: requires querying of specific sections of text nodes, not possible in XPath (or at least very difficult)
  • ::first-letter: requires querying of specific sections of text nodes, not possible in XPath (or at least very difficult)
  • ::before: not used for querying, instead intended for modifying documents
  • ::after: not used for querying, instead intended for modifying documents
• Tests for the generated XPath