Class: IfdefProcess

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ IfdefProcess

Returns a new instance of IfdefProcess.



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# File 'lib/ifdef_process.rb', line 6

def initialize()
  @define_list = []
end

Instance Attribute Details

#define_list ⇒ Object (readonly)

Returns the value of attribute define_list.



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# File 'lib/ifdef_process.rb', line 4

def define_list
  @define_list
end

Instance Method Details

#check_ifdefined(cond_string, define_hash) ⇒ Object 



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# File 'lib/ifdef_process.rb', line 18

def check_ifdefined(cond_string, define_hash)
  pattern = /(!)?defined\(([^)]*)\)/
  define_hash_new = define_hash.dup
  matches = cond_string.scan(pattern)

  matches.each do |match|
    # !definedでKeyが未登録の場合は登録
    has_exclamation = !match[0].nil?
    key = match[1]
    if has_exclamation
      unless define_hash.key? key
        define_hash_new[key] = false
      end
    end
  end

  return define_hash_new
end

#condition_judge(cond_string, define_hash) ⇒ Object 



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# File 'lib/ifdef_process.rb', line 37

def condition_judge(cond_string, define_hash)
  ret = false
  #puts "cond_string=#{cond_string}"
  cond_string = remove_suffixes(cond_string)
  #puts "cond_string=#{cond_string}"
  define_hash_new = check_ifdefined(cond_string, define_hash)
  #pp define_hash_new
  cond_string.gsub!(/defined/, "")
  if cond_string.gsub(/ /, "").to_s == "0"
    # not define
    #puts "return ifdef_judge #{ret}"
    return false
  end
  eval_buf = []
  arg_hash = {}
  eval_buf.push "def judge_ifdef"
  cond_string.scan(/[_A-Za-z][_A-Za-z_0-9]+/) do |m|
    #puts "scan word=#{m}"
    @define_list.push m
    next if m == "false" or m == "true"
    if define_hash_new.key? m
      arg_hash[m] = define_hash_new[m]
    else
      # not define
      #puts "return ifdef_judge #{ret}"
      return false
    end
  end
  #puts "arg_hash=#{arg_hash}"
  arg_hash.each do |key, val|
    eval_buf.push "  #{key.downcase} = #{val}"
  end
  eval_buf.push "  if #{cond_string.downcase}"
  eval_buf.push "    return true"
  eval_buf.push "  else"
  eval_buf.push "    return false"
  eval_buf.push "  end"
  eval_buf.push "end"
  eval_buf.push "judge_ifdef()"
  eval_string = eval_buf.join("\n")
  #puts "eval_string=#{eval_string}"
  ret = eval eval_string
  #puts "return ifdef_judge #{ret}"
  return ret
end

#process_ifdef(file_buf, define_hash) ⇒ Object 



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# File 'lib/ifdef_process.rb', line 83

def process_ifdef(file_buf, define_hash)
  out_buf = []
  proc_list = [true]
  line_count = 1
  ifdef_flag = [false]
  file_buf.each_line do |line|
    line = line.strip
    case line
    when /^#ifdef\s+(.*)/
      proc_list.push condition_judge($1, define_hash)
      ifdef_flag.push proc_list[-1]
      #puts "#ifdef #{ifdef_flag[-1]}:#{line_count}:line=[#{line}]:#{$1}"
    when /^#ifndef\s+(.+)/
      proc_list.push !(condition_judge($1, define_hash))
      ifdef_flag.push proc_list[-1]
      #puts "#ifndef #{ifdef_flag[-1]}:#{line_count}:line=[#{line}]:#{$1}"
    when /^#if\s+(.+)/
      proc_list.push condition_judge($1, define_hash)
      ifdef_flag.push proc_list[-1]
      #puts "#if #{ifdef_flag[-1]}:#{line_count}:line=[#{line}]:#{$1}"
    when /^#elif\s+(.+)/
      if !ifdef_flag[-1]
        proc_list[-1] = condition_judge($1, define_hash)
        ifdef_flag[-1] = proc_list[-1]
      else
        proc_list[-1] = false
        ifdef_flag[-1] = true
      end
      #puts "#elif #{ifdef_flag[-1]}:#{line_count}:line=[#{line}]:#{$1}"
    when /^#else/
      if !ifdef_flag[-1]
        proc_list[-1] = !proc_list[-1]
      else
        proc_list[-1] = false
        ifdef_flag[-1] = true
      end
      #puts "#else #{ifdef_flag[-1]}:#{line_count}:line=[#{line}]"
    when /^#endif/
      proc_list.pop
      ifdef_flag.pop
      #puts "#endif #{ifdef_flag[-1]}:#{line_count}:line=[#{line}]"
    else
      #print "proc_list="
      #pp proc_list
      if 0 == proc_list.select { |p| p == false }.size
        #puts "#{ifdef_flag[-1]}:#{line_count}: #{line}"
        out_buf.push line
      else
        #puts "#{ifdef_flag[-1]}:#{line_count}: #{line}"
      end
    end
    line_count += 1
  end
  @define_list.uniq!
  return out_buf
end

#remove_suffixes(text) ⇒ Object 



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# File 'lib/ifdef_process.rb', line 10

def remove_suffixes(text)
  suffixes = %w[ULL LL UL D F U L]
  suffix_pattern = suffixes.uniq.sort_by(&:length).reverse.join("|")
  #puts suffix_pattern
  regex = /(\d+\.?\d*)(?:#{suffix_pattern})\b/i
  text.gsub(regex, '\1')
end