lua/lexers/rails.lua

   1 -- Copyright 2006-2017 Mitchell mitchell.att.foicica.com. See LICENSE.
   2 -- Ruby on Rails LPeg lexer.
   3
   4 local l = require('lexer')
   5 local token, word_match = l.token, l.word_match
   6 local P, R, S = lpeg.P, lpeg.R, lpeg.S
   7 local table = _G.table
   8
   9 local M = {_NAME = 'rails'}
  10
  11 -- Whitespace
  12 local ws = token(l.WHITESPACE, l.space^1)
  13
  14 -- Functions.
  15
  16 local actionpack = token(l.FUNCTION, word_match{
  17   'before_filter', 'skip_before_filter', 'skip_after_filter', 'after_filter',
  18   'around_filter', 'filter', 'filter_parameter_logging', 'layout',
  19   'require_dependency', 'render', 'render_action', 'render_text', 'render_file',
  20   'render_template', 'render_nothing', 'render_component',
  21   'render_without_layout', 'rescue_from', 'url_for', 'redirect_to',
  22   'redirect_to_path', 'redirect_to_url', 'respond_to', 'helper',
  23   'helper_method', 'model', 'service', 'observer', 'serialize', 'scaffold',
  24   'verify', 'hide_action'
  25 })
  26
  27 local view_helpers = token(l.FUNCTION, word_match{
  28   'check_box', 'content_for', 'error_messages_for', 'form_for', 'fields_for',
  29   'file_field', 'hidden_field', 'image_submit_tag', 'label', 'link_to',
  30   'password_field', 'radio_button', 'submit', 'text_field', 'text_area'
  31 })
  32
  33 local activerecord = token(l.FUNCTION, word_match{
  34   'after_create', 'after_destroy', 'after_save', 'after_update',
  35   'after_validation', 'after_validation_on_create',
  36   'after_validation_on_update', 'before_create', 'before_destroy',
  37   'before_save', 'before_update', 'before_validation',
  38   'before_validation_on_create', 'before_validation_on_update', 'composed_of',
  39   'belongs_to', 'has_one', 'has_many', 'has_and_belongs_to_many', 'validate',
  40   'validates', 'validate_on_create', 'validates_numericality_of',
  41   'validate_on_update', 'validates_acceptance_of', 'validates_associated',
  42   'validates_confirmation_of', 'validates_each', 'validates_format_of',
  43   'validates_inclusion_of', 'validates_exclusion_of', 'validates_length_of',
  44   'validates_presence_of', 'validates_size_of', 'validates_uniqueness_of',
  45   'attr_protected', 'attr_accessible', 'attr_readonly',
  46   'accepts_nested_attributes_for', 'default_scope', 'scope'
  47 })
  48
  49 local active_support = token(l.FUNCTION, word_match{
  50   'alias_method_chain', 'alias_attribute', 'delegate', 'cattr_accessor',
  51   'mattr_accessor', 'returning', 'memoize'
  52 })
  53
  54 -- Extend Ruby lexer to include Rails methods.
  55 local ruby = l.load('ruby')
  56 local _rules = ruby._rules
  57 _rules[1] = {'whitespace', ws}
  58 table.insert(_rules, 3, {'actionpack', actionpack})
  59 table.insert(_rules, 4, {'view_helpers', view_helpers})
  60 table.insert(_rules, 5, {'activerecord', activerecord})
  61 table.insert(_rules, 6, {'active_support', active_support})
  62 M._rules = _rules
  63 M._foldsymbols = ruby._foldsymbols
  64
  65 return M