Class: SetBuilderAdapter::Ag::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/set_builder_adapter/ag.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(input) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/set_builder_adapter/ag.rb', line 11

def initialize(input)
  self.input = input
  self.parsed_items = []
end

Instance Attribute Details

#current_item ⇒ Object

Returns the value of attribute current_item.



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# File 'lib/set_builder_adapter/ag.rb', line 9

def current_item
  @current_item
end

#input ⇒ Object

Returns the value of attribute input.



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# File 'lib/set_builder_adapter/ag.rb', line 9

def input
  @input
end

#parsed_items ⇒ Object

Returns the value of attribute parsed_items.



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# File 'lib/set_builder_adapter/ag.rb', line 9

def parsed_items
  @parsed_items
end

Instance Method Details

#add(list_key, value) ⇒ Object 



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# File 'lib/set_builder_adapter/ag.rb', line 28

def add(list_key, value)
  self.current_item[list_key] ||= []
  self.current_item[list_key].push value
end

#learn(key, value) ⇒ Object 



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# File 'lib/set_builder_adapter/ag.rb', line 24

def learn(key, value)
  self.current_item[key] = value
end

#new_item_with_file_path(file_path) ⇒ Object 



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# File 'lib/set_builder_adapter/ag.rb', line 39

def new_item_with_file_path(file_path)
  record_existing_item
  self.current_item = { }
  learn :file_path, file_path
end

#parse ⇒ Object 



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# File 'lib/set_builder_adapter/ag.rb', line 16

def parse
  input.split("\n").each do |line|
    parse_line line
  end
  record_existing_item
  parsed_items
end

#parse_line(line) ⇒ Object 



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# File 'lib/set_builder_adapter/ag.rb', line 45

def parse_line(line)
  # A new item is started when the current item has no path, or if the
  # path for the current result line doesn't match the current item's file
  # path.
  if current_item == nil or (line != "--" and line != "" and not line.start_with?(current_item[:file_path]))
    line =~ /^(.*?):\d/
    new_item_with_file_path $1
  end

  # The line can be either a pre or post match for the current item
  if line =~ /^(.*?):(\d+)-(.*)/
    if current_item[:match_line]
      add :post_match_lines, $3
    else
      add :pre_match_lines, $3
    end

  # The line can be the actual match itself
  elsif line =~ /^(.*?):(\d+):(\d+):(.*)/ # match line
    if current_item[:match_line]
      new_item_with_file_path current_item[:file_path]
    end
    learn :row, $2
    learn :column, $3
    learn :match_line, $4

  # Finally, the item can be the inter-file match separator
  elsif line =~ /--/
    new_item_with_file_path current_item[:file_path]

  # Weird exception: a blank line will be ignored.
  elsif line == ""

  # Otherwise big fat fail.
  else
    debug_message "Parse failed for:"
    debug_message line.inspect
    raise ParserError.new("parse_line failed for: #{line.inspect}")
  end
end

#record_existing_item ⇒ Object 



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# File 'lib/set_builder_adapter/ag.rb', line 33

def record_existing_item
  if current_item
    parsed_items << current_item
  end
end