1 | # Copyright Deniz Bahadir 2015
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2 | #
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3 | # Distributed under the Boost Software License, Version 1.0.
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4 | # (See accompanying file LICENSE_1_0.txt or copy at
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5 | # http://www.boost.org/LICENSE_1_0.txt)
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6 | #
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7 | # See http://www.boost.org/libs/mpl for documentation.
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8 | # See http://stackoverflow.com/a/20660264/3115457 for further information.
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9 | # See http://stackoverflow.com/a/29627158/3115457 for further information.
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10 |
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11 | import argparse
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12 | import sys
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13 | import os
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14 | import os.path
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15 | import re
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16 | import fileinput
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17 | import shutil
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18 |
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19 |
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20 | def create_more_container_files(sourceDir, suffix, maxElements, containers, containers2):
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21 | """Creates additional files for the individual MPL-containers."""
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22 |
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23 | # Create files for each MPL-container with 20 to 'maxElements' elements
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24 | # which will be used during generation.
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25 | for container in containers:
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26 | for i in range(20, maxElements, 10):
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27 | # Create copy of "template"-file.
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28 | newFile = os.path.join( sourceDir, container, container + str(i+10) + suffix )
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29 | shutil.copyfile( os.path.join( sourceDir, container, container + "20" + suffix ), newFile )
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30 | # Adjust copy of "template"-file accordingly.
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31 | for line in fileinput.input( newFile, inplace=1, mode="rU" ):
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32 | line = re.sub(r'20', re.escape(str(i+10)), line.rstrip())
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33 | line = re.sub(r'11', re.escape(str(i + 1)), line.rstrip())
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34 | line = re.sub(r'10(?![0-9])', re.escape(str(i)), line.rstrip())
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35 | print(line)
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36 | for container in containers2:
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37 | for i in range(20, maxElements, 10):
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38 | # Create copy of "template"-file.
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39 | newFile = os.path.join( sourceDir, container, container + str(i+10) + "_c" + suffix )
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40 | shutil.copyfile( os.path.join( sourceDir, container, container + "20_c" + suffix ), newFile )
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41 | # Adjust copy of "template"-file accordingly.
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42 | for line in fileinput.input( newFile, inplace=1, mode="rU" ):
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43 | line = re.sub(r'20', re.escape(str(i+10)), line.rstrip())
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44 | line = re.sub(r'11', re.escape(str(i + 1)), line.rstrip())
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45 | line = re.sub(r'10(?![0-9])', re.escape(str(i)), line.rstrip())
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46 | print(line)
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47 |
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48 |
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49 | def create_input_for_numbered_sequences(headerDir, sourceDir, containers, maxElements):
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50 | """Creates additional source- and header-files for the numbered sequence MPL-containers."""
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51 | # Create additional container-list without "map".
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52 | containersWithoutMap = containers[:]
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53 | try:
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54 | containersWithoutMap.remove('map')
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55 | except ValueError:
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56 | # We can safely ignore if "map" is not contained in 'containers'!
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57 | pass
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58 | # Create header/source-files.
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59 | create_more_container_files(headerDir, ".hpp", maxElements, containers, containersWithoutMap)
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60 | create_more_container_files(sourceDir, ".cpp", maxElements, containers, containersWithoutMap)
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61 |
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62 |
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63 | def adjust_container_limits_for_variadic_sequences(headerDir, containers, maxElements):
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64 | """Adjusts the limits of variadic sequence MPL-containers."""
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65 | for container in containers:
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66 | headerFile = os.path.join( headerDir, "limits", container + ".hpp" )
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67 | regexMatch = r'(define\s+BOOST_MPL_LIMIT_' + container.upper() + r'_SIZE\s+)[0-9]+'
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68 | regexReplace = r'\g<1>' + re.escape( str(maxElements) )
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69 | for line in fileinput.input( headerFile, inplace=1, mode="rU" ):
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70 | line = re.sub(regexMatch, regexReplace, line.rstrip())
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71 | print(line)
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72 |
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73 |
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74 | def to_positive_multiple_of_10(string):
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75 | """Converts a string into its encoded positive integer (greater zero) or throws an exception."""
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76 | try:
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77 | value = int(string)
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78 | except ValueError:
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79 | msg = '"%r" is not a positive multiple of 10 (greater zero).' % string
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80 | raise argparse.ArgumentTypeError(msg)
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81 | if value <= 0 or value % 10 != 0:
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82 | msg = '"%r" is not a positive multiple of 10 (greater zero).' % string
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83 | raise argparse.ArgumentTypeError(msg)
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84 | return value
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85 |
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86 |
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87 | def to_existing_absolute_path(string):
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88 | """Converts a path into its absolute path and verifies that it exists or throws an exception."""
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89 | value = os.path.abspath(string)
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90 | if not os.path.exists( value ) or not os.path.isdir( value ):
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91 | msg = '"%r" is not a valid path to a directory.' % string
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92 | raise argparse.ArgumentTypeError(msg)
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93 | return value
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94 |
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95 |
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96 | def main():
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97 | """The main function."""
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98 |
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99 | # Prepare and run cmdline-parser.
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100 | cmdlineParser = argparse.ArgumentParser(description="A generator-script for pre-processed Boost.MPL headers.")
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101 | cmdlineParser.add_argument("-v", "--verbose", dest='verbose', action='store_true',
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102 | help="Be a little bit more verbose.")
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103 | cmdlineParser.add_argument("-s", "--sequence-type", dest='seqType', choices=['variadic', 'numbered', 'both'],
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104 | default='both',
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105 | help="Only update pre-processed headers for the selected sequence types, "
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106 | "either 'numbered' sequences, 'variadic' sequences or 'both' sequence "
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107 | "types. (Default=both)")
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108 | cmdlineParser.add_argument("--no-vector", dest='want_vector', action='store_false',
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109 | help="Do not update pre-processed headers for Boost.MPL Vector.")
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110 | cmdlineParser.add_argument("--no-list", dest='want_list', action='store_false',
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111 | help="Do not update pre-processed headers for Boost.MPL List.")
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112 | cmdlineParser.add_argument("--no-set", dest='want_set', action='store_false',
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113 | help="Do not update pre-processed headers for Boost.MPL Set.")
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114 | cmdlineParser.add_argument("--no-map", dest='want_map', action='store_false',
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115 | help="Do not update pre-processed headers for Boost.MPL Map.")
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116 | cmdlineParser.add_argument("--num-elements", dest='numElements', metavar="<num-elements>",
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117 | type=to_positive_multiple_of_10, default=100,
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118 | help="The maximal number of elements per container sequence. (Default=100)")
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119 | cmdlineParser.add_argument(dest='sourceDir', metavar="<source-dir>",
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120 | type=to_existing_absolute_path,
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121 | help="The source-directory of Boost.")
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122 | args = cmdlineParser.parse_args()
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123 |
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124 | # Some verbose debug output.
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125 | if args.verbose:
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126 | print "Arguments extracted from command-line:"
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127 | print " verbose = ", args.verbose
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128 | print " source directory = ", args.sourceDir
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129 | print " num elements = ", args.numElements
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130 | print " sequence type = ", args.seqType
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131 | print " want: vector = ", args.want_vector
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132 | print " want: list = ", args.want_list
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133 | print " want: set = ", args.want_set
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134 | print " want: map = ", args.want_map
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135 |
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136 | # The directories for header- and source files of Boost.MPL.
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137 | # NOTE: Assuming 'args.sourceDir' is the source-directory of the entire boost project.
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138 | headerDir = os.path.join( args.sourceDir, "boost", "mpl" )
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139 | sourceDir = os.path.join( args.sourceDir, "libs", "mpl", "preprocessed" )
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140 | # Check that the header/source-directories exist.
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141 | if not os.path.exists( headerDir ) or not os.path.exists( sourceDir ):
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142 | # Maybe 'args.sourceDir' is not the source-directory of the entire boost project
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143 | # but instead of the Boost.MPL git-directory, only?
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144 | headerDir = os.path.join( args.sourceDir, "include", "boost", "mpl" )
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145 | sourceDir = os.path.join( args.sourceDir, "preprocessed" )
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146 | if not os.path.exists( headerDir ) or not os.path.exists( sourceDir ):
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147 | cmdlineParser.print_usage()
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148 | print "error: Cannot find Boost.MPL header/source files in given Boost source-directory!"
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149 | sys.exit(0)
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150 |
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151 | # Some verbose debug output.
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152 | if args.verbose:
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153 | print "Chosen header-directory: ", headerDir
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154 | print "Chosen source-directory: ", sourceDir
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155 |
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156 | # Create list of containers for which files shall be pre-processed.
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157 | containers = []
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158 | if args.want_vector:
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159 | containers.append('vector')
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160 | if args.want_list:
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161 | containers.append('list')
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162 | if args.want_set:
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163 | containers.append('set')
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164 | if args.want_map:
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165 | containers.append('map')
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166 | if containers == []:
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167 | print "Nothing to do. (Why did you prevent generating pre-processed headers for all Boost.MPL container types?"
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168 | sys.exit(0)
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169 |
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170 | # Some verbose debug output.
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171 | if args.verbose:
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172 | print "Containers for which to pre-process headers: ", containers
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173 |
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174 | # Create (additional) input files for generating pre-processed headers of numbered sequence MPL containers.
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175 | if args.seqType == "both" or args.seqType == "numbered":
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176 | create_input_for_numbered_sequences(headerDir, sourceDir, containers, args.numElements)
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177 | # Modify settings for generating pre-processed headers of variadic sequence MPL containers.
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178 | if args.seqType == "both" or args.seqType == "variadic":
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179 | adjust_container_limits_for_variadic_sequences(headerDir, containers, args.numElements)
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180 |
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181 | # Generate MPL-preprocessed files.
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182 | os.chdir( sourceDir )
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183 | if args.seqType == "both" or args.seqType == "numbered":
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184 | if args.want_vector:
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185 | if args.verbose:
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186 | print "Pre-process headers for Boost.MPL numbered vectors."
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187 | os.system( "python " + os.path.join( sourceDir, "preprocess_vector.py" ) + " all " + args.sourceDir )
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188 | if args.want_list:
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189 | if args.verbose:
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190 | print "Pre-process headers for Boost.MPL numbered lists."
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191 | os.system( "python " + os.path.join( sourceDir, "preprocess_list.py" ) + " all " + args.sourceDir )
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192 | if args.want_set:
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193 | if args.verbose:
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194 | print "Pre-process headers for Boost.MPL numbered sets."
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195 | os.system( "python " + os.path.join( sourceDir, "preprocess_set.py" ) + " all " + args.sourceDir )
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196 | if args.want_map:
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197 | if args.verbose:
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198 | print "Pre-process headers for Boost.MPL numbered maps."
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199 | os.system( "python " + os.path.join( sourceDir, "preprocess_map.py" ) + " all " + args.sourceDir )
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200 | if args.seqType == "both" or args.seqType == "variadic":
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201 | if args.verbose:
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202 | print "Pre-process headers for Boost.MPL variadic containers."
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203 | os.system( "python " + os.path.join( sourceDir, "preprocess.py" ) + " all " + args.sourceDir )
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204 |
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205 |
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206 | if __name__ == '__main__':
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207 | main()
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