Class: Divine::BabelHelperMethods

Inherits:
Object
  • Object
show all
Defined in:
lib/divine/code_generators/code_generator.rb

Overview

Support methods needed when generating source code files

Instance Method Summary collapse

Instance Method Details

#camelize(*str) ⇒ Object

Camelize comming args

  • Args :

  • *str -> list of arguments needed to be camelized



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# File 'lib/divine/code_generators/code_generator.rb', line 76

def camelize(*str)
  ss = str.map(&:to_s).join("_").split(/_/).flatten
  "#{ss.first.downcase}#{ss[1..-1].map(&:downcase).map(&:capitalize).join}"
end

#format_src(first_indent, following_indent, is, spc = " ") ⇒ Object

Handle indentation



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# File 'lib/divine/code_generators/code_generator.rb', line 48

def format_src(first_indent, following_indent, is, spc = " ")
  indent = "#{spc * first_indent}"
  is.flatten.compact.map do |i|
    case i
    when :indent
      indent << spc * following_indent
      nil
    when :deindent
      indent = indent[0..-(following_indent+1)]
      nil
    else
      "#{indent}#{i}"
    end
  end.compact.join("\n")
end

#get_fresh_variable_name ⇒ Object

Return new variable name



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# File 'lib/divine/code_generators/code_generator.rb', line 67

def get_fresh_variable_name
  @vindex = (@vindex || 0xFF) + 1
  return "var_#{@vindex.to_s(16)}"
end

#get_header_comment_text ⇒ Object

Return Header comments for generated files



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# File 'lib/divine/code_generators/code_generator.rb', line 84

def get_header_comment_text
  return [
    "",
    "-- DO NOT EDIT THIS FILE --", "",
    "This file was generated by Divine #{Divine::VERSION} (#{Time.now.to_s})", "",
    "-- DO NOT EDIT THIS FILE --", ""
  ]
end

#sanity_check(ss) ⇒ Object

Sanity check the different revisions of the struct



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# File 'lib/divine/code_generators/code_generator.rb', line 96

def sanity_check(ss)
  vos = ss.sort do |x,y|
    v1,v2 = [x,y].map(&:version)
    v1 <=> v2
  end

  # Check version numbers
  unless vos.map(&:version).uniq.size == ss.size
    raise "Inconsistent version numbering for '#{ss.first.name}': #{vos.map(&:version).join(', ')}"
  end
  
  # Check that we don't have multiple variables with same name
  vos.each do |s|
    names = s.fields.group_by(&:name)
    names.each_pair do |k, v|
      raise "Multiple fields with same name '#{k}' is defined in '#{s.name}', version #{s.version}" unless v.size == 1
    end
  end
  
  # Check types between versions
  check_field_types(vos)
  
  # Check for changed definitions
  check_freezed_structs(vos)
  
  # Return them ordered by version
  vos
end