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- # Copyright Deniz Bahadir 2015
- #
- # Distributed under the Boost Software License, Version 1.0.
- # (See accompanying file LICENSE_1_0.txt or copy at
- # http://www.boost.org/LICENSE_1_0.txt)
- #
- # See http://www.boost.org/libs/mpl for documentation.
- # See http://stackoverflow.com/a/20660264/3115457 for further information.
- # See http://stackoverflow.com/a/29627158/3115457 for further information.
- import fix_boost_mpl_preprocess as fixmpl
- import argparse
- import sys
- import os
- import os.path
- import re
- import fileinput
- import shutil
- def create_more_container_files(sourceDir, suffix, maxElements, containers, containers2):
- """Creates additional files for the individual MPL-containers."""
- # Create files for each MPL-container with 20 to 'maxElements' elements
- # which will be used during generation.
- for container in containers:
- for i in range(20, maxElements, 10):
- # Create copy of "template"-file.
- newFile = os.path.join( sourceDir, container, container + str(i+10) + suffix )
- shutil.copyfile( os.path.join( sourceDir, container, container + "20" + suffix ), newFile )
- # Adjust copy of "template"-file accordingly.
- for line in fileinput.input( newFile, inplace=1, mode="rU" ):
- line = re.sub(r'20', '%TWENTY%', line.rstrip())
- line = re.sub(r'11', '%ELEVEN%', line.rstrip())
- line = re.sub(r'10(?![0-9])', '%TEN%', line.rstrip())
- line = re.sub(r'%TWENTY%', re.escape(str(i+10)), line.rstrip())
- line = re.sub(r'%ELEVEN%', re.escape(str(i + 1)), line.rstrip())
- line = re.sub(r'%TEN%', re.escape(str(i)), line.rstrip())
- print(line)
- for container in containers2:
- for i in range(20, maxElements, 10):
- # Create copy of "template"-file.
- newFile = os.path.join( sourceDir, container, container + str(i+10) + "_c" + suffix )
- shutil.copyfile( os.path.join( sourceDir, container, container + "20_c" + suffix ), newFile )
- # Adjust copy of "template"-file accordingly.
- for line in fileinput.input( newFile, inplace=1, mode="rU" ):
- line = re.sub(r'20', '%TWENTY%', line.rstrip())
- line = re.sub(r'11', '%ELEVEN%', line.rstrip())
- line = re.sub(r'10(?![0-9])', '%TEN%', line.rstrip())
- line = re.sub(r'%TWENTY%', re.escape(str(i+10)), line.rstrip())
- line = re.sub(r'%ELEVEN%', re.escape(str(i + 1)), line.rstrip())
- line = re.sub(r'%TEN%', re.escape(str(i)), line.rstrip())
- print(line)
- def create_input_for_numbered_sequences(headerDir, sourceDir, containers, maxElements):
- """Creates additional source- and header-files for the numbered sequence MPL-containers."""
- # Create additional container-list without "map".
- containersWithoutMap = containers[:]
- try:
- containersWithoutMap.remove('map')
- except ValueError:
- # We can safely ignore if "map" is not contained in 'containers'!
- pass
- # Create header/source-files.
- create_more_container_files(headerDir, ".hpp", maxElements, containers, containersWithoutMap)
- create_more_container_files(sourceDir, ".cpp", maxElements, containers, containersWithoutMap)
- def adjust_container_limits_for_variadic_sequences(headerDir, containers, maxElements):
- """Adjusts the limits of variadic sequence MPL-containers."""
- for container in containers:
- headerFile = os.path.join( headerDir, "limits", container + ".hpp" )
- regexMatch = r'(define\s+BOOST_MPL_LIMIT_' + container.upper() + r'_SIZE\s+)[0-9]+'
- regexReplace = r'\g<1>' + re.escape( str(maxElements) )
- for line in fileinput.input( headerFile, inplace=1, mode="rU" ):
- line = re.sub(regexMatch, regexReplace, line.rstrip())
- print(line)
- def current_boost_dir():
- """Returns the (relative) path to the Boost source-directory this file is located in (if any)."""
- # Path to directory containing this script.
- path = os.path.dirname( os.path.realpath(__file__) )
- # Making sure it is located in "${boost-dir}/libs/mpl/preprocessed".
- for directory in reversed( ["libs", "mpl", "preprocessed"] ):
- (head, tail) = os.path.split(path)
- if tail == directory:
- path = head
- else:
- return None
- return os.path.relpath( path )
-
- def to_positive_multiple_of_10(string):
- """Converts a string into its encoded positive integer (greater zero) or throws an exception."""
- try:
- value = int(string)
- except ValueError:
- msg = '"%r" is not a positive multiple of 10 (greater zero).' % string
- raise argparse.ArgumentTypeError(msg)
- if value <= 0 or value % 10 != 0:
- msg = '"%r" is not a positive multiple of 10 (greater zero).' % string
- raise argparse.ArgumentTypeError(msg)
- return value
- def to_existing_absolute_path(string):
- """Converts a path into its absolute path and verifies that it exists or throws an exception."""
- value = os.path.abspath(string)
- if not os.path.exists( value ) or not os.path.isdir( value ):
- msg = '"%r" is not a valid path to a directory.' % string
- raise argparse.ArgumentTypeError(msg)
- return value
- def main():
- """The main function."""
-
- # Find the current Boost source-directory in which this script is located.
- sourceDir = current_boost_dir()
- if sourceDir == None:
- sourceDir = ""
-
- # Prepare and run cmdline-parser.
- cmdlineParser = argparse.ArgumentParser(description="A generator-script for pre-processed Boost.MPL headers.")
- cmdlineParser.add_argument("-v", "--verbose", dest='verbose', action='store_true',
- help="Be a little bit more verbose.")
- cmdlineParser.add_argument("-s", "--sequence-type", dest='seqType', choices=['variadic', 'numbered', 'both'],
- default='both',
- help="Only update pre-processed headers for the selected sequence types, "
- "either 'numbered' sequences, 'variadic' sequences or 'both' sequence "
- "types. (Default=both)")
- cmdlineParser.add_argument("--no-vector", dest='want_vector', action='store_false',
- help="Do not update pre-processed headers for Boost.MPL Vector.")
- cmdlineParser.add_argument("--no-list", dest='want_list', action='store_false',
- help="Do not update pre-processed headers for Boost.MPL List.")
- cmdlineParser.add_argument("--no-set", dest='want_set', action='store_false',
- help="Do not update pre-processed headers for Boost.MPL Set.")
- cmdlineParser.add_argument("--no-map", dest='want_map', action='store_false',
- help="Do not update pre-processed headers for Boost.MPL Map.")
- cmdlineParser.add_argument("--num-elements", dest='numElements', metavar="<num-elements>",
- type=to_positive_multiple_of_10, default=100,
- help="The maximal number of elements per container sequence. (Default=100)")
- cmdlineParser.add_argument(dest='sourceDir', metavar="<source-dir>", default=current_boost_dir(), nargs='?',
- type=to_existing_absolute_path,
- help="The source-directory of Boost. (Default=\"" + sourceDir + "\")")
- args = cmdlineParser.parse_args()
- # Some verbose debug output.
- if args.verbose:
- print "Arguments extracted from command-line:"
- print " verbose = ", args.verbose
- print " source directory = ", args.sourceDir
- print " num elements = ", args.numElements
- print " sequence type = ", args.seqType
- print " want: vector = ", args.want_vector
- print " want: list = ", args.want_list
- print " want: set = ", args.want_set
- print " want: map = ", args.want_map
- # Verify that we received any source-directory.
- if args.sourceDir == None:
- print "You should specify a valid path to the Boost source-directory."
- sys.exit(0)
- # The directories for header- and source files of Boost.MPL.
- # NOTE: Assuming 'args.sourceDir' is the source-directory of the entire boost project.
- headerDir = os.path.join( args.sourceDir, "boost", "mpl" )
- sourceDir = os.path.join( args.sourceDir, "libs", "mpl", "preprocessed" )
- # Check that the header/source-directories exist.
- if not os.path.exists( headerDir ) or not os.path.exists( sourceDir ):
- # Maybe 'args.sourceDir' is not the source-directory of the entire boost project
- # but instead of the Boost.MPL git-directory, only?
- headerDir = os.path.join( args.sourceDir, "include", "boost", "mpl" )
- sourceDir = os.path.join( args.sourceDir, "preprocessed" )
- if not os.path.exists( headerDir ) or not os.path.exists( sourceDir ):
- cmdlineParser.print_usage()
- print "error: Cannot find Boost.MPL header/source files in given Boost source-directory!"
- sys.exit(0)
- # Some verbose debug output.
- if args.verbose:
- print "Chosen header-directory: ", headerDir
- print "Chosen source-directory: ", sourceDir
- # Create list of containers for which files shall be pre-processed.
- containers = []
- if args.want_vector:
- containers.append('vector')
- if args.want_list:
- containers.append('list')
- if args.want_set:
- containers.append('set')
- if args.want_map:
- containers.append('map')
- if containers == []:
- print "Nothing to do."
- print "(Why did you prevent generating pre-processed headers for all Boost.MPL container types?)"
- sys.exit(0)
- # Possibly fix the header-comments of input-files needed for pre-processing.
- if args.verbose:
- print "Checking if prior to pre-processing some input-files need fixing."
- needFixing = fixmpl.check_input_files(headerDir, sourceDir, containers, args.seqType, args.verbose)
- if needFixing:
- if args.verbose:
- print "Fixing of some input-files prior to pre-processing is needed."
- print "Will fix them now!"
- fixmpl.fix_input_files(headerDir, sourceDir, containers, args.seqType, args.verbose)
- # Some verbose debug output.
- if args.verbose:
- print "Containers for which to pre-process headers: ", containers
- # Create (additional) input files for generating pre-processed headers of numbered sequence MPL containers.
- if args.seqType == "both" or args.seqType == "numbered":
- create_input_for_numbered_sequences(headerDir, sourceDir, containers, args.numElements)
- # Modify settings for generating pre-processed headers of variadic sequence MPL containers.
- if args.seqType == "both" or args.seqType == "variadic":
- adjust_container_limits_for_variadic_sequences(headerDir, containers, args.numElements)
- # Generate MPL-preprocessed files.
- os.chdir( sourceDir )
- if args.seqType == "both" or args.seqType == "numbered":
- if args.want_vector:
- if args.verbose:
- print "Pre-process headers for Boost.MPL numbered vectors."
- os.system( "python " + os.path.join( sourceDir, "preprocess_vector.py" ) + " all " + args.sourceDir )
- if args.want_list:
- if args.verbose:
- print "Pre-process headers for Boost.MPL numbered lists."
- os.system( "python " + os.path.join( sourceDir, "preprocess_list.py" ) + " all " + args.sourceDir )
- if args.want_set:
- if args.verbose:
- print "Pre-process headers for Boost.MPL numbered sets."
- os.system( "python " + os.path.join( sourceDir, "preprocess_set.py" ) + " all " + args.sourceDir )
- if args.want_map:
- if args.verbose:
- print "Pre-process headers for Boost.MPL numbered maps."
- os.system( "python " + os.path.join( sourceDir, "preprocess_map.py" ) + " all " + args.sourceDir )
- if args.seqType == "both" or args.seqType == "variadic":
- if args.verbose:
- print "Pre-process headers for Boost.MPL variadic containers."
- os.system( "python " + os.path.join( sourceDir, "preprocess.py" ) + " all " + args.sourceDir )
- if __name__ == '__main__':
- main()
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