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Diffstat (limited to 'src/boost/libs/mpl/preprocessed/pp.py')
| -rw-r--r-- | src/boost/libs/mpl/preprocessed/pp.py | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/src/boost/libs/mpl/preprocessed/pp.py b/src/boost/libs/mpl/preprocessed/pp.py new file mode 100644 index 00000000..24bfd27e --- /dev/null +++ b/src/boost/libs/mpl/preprocessed/pp.py @@ -0,0 +1,256 @@ + +# Copyright Aleksey Gurtovoy 2001-2004 +# +# 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. + +# $Id$ +# $Date$ +# $Revision$ + +import fileinput +import os +import re +import string +import sys + +if_else = lambda a,b,c:(a and [b] or [c])[0] +max_len = 79 +ident = 4 + +def nearest_ident_pos(text): + return (len(text)/ident) * ident + +def block_format(limits, text, first_sep=' ', sep=',', need_last_ident=1 ): + if sep == ',' and string.find( text, '<' ) != -1: + sep = '%s ' % sep + + words = string.split( + string.join( string.split( text ), ' ' ) + , sep + ) + + s = ' ' * limits[0] + max_len = limits[1] + return '%s\n%s' \ + % ( + reduce( + lambda t,w,max_len=max_len,s=s,sep=sep: + if_else(t[1] + len(w) < max_len + , ('%s%s%s'% (t[0],t[2],w), t[1]+len(w)+len(t[2]), sep) + , ('%s\n%s%s%s'% (t[0],s,sep,w), len(s)+len(w)+len(sep), sep) + ) + , words + , (s,len(s)+len(first_sep),first_sep) + )[0] + , if_else(need_last_ident,s,'') + ) + +def handle_args( match ): + if re.compile('^\s*(typedef|struct|static)\s+.*?$').match(match.group(0)): + return match.group(0) + + return '%s'\ + % block_format( + (nearest_ident_pos(match.group(1)),max_len) + , match.group(3) + , match.group(2) + , ',' + , 0 + ) + + +def handle_inline_args(match): + if len(match.group(0)) < max_len: + return match.group(0) + + if match.group(9) == None: + return '%s%s<\n%s>\n'\ + % ( + match.group(1) + , match.group(3) + , block_format( + (nearest_ident_pos(match.group(1))+ident,max_len) + , match.group(4) + ) + ) + + return '%s%s<\n%s>\n%s%s'\ + % ( + match.group(1) + , match.group(3) + , block_format( + (nearest_ident_pos(match.group(1))+ident,max_len-len(match.group(9))) + , match.group(4) + ) + , string.replace(match.group(1),',',' ') + , match.group(9) + ) + +def handle_simple_list(match): + if match.group(1) == 'template': + return match.group(0) + + single_arg = re.compile('^\s*(\w|\d)+\s*$').match(match.group(2)) + return if_else(single_arg,'%s<%s>','%s< %s >') %\ + ( + match.group(1) + , string.join(string.split(match.group(2)), '') + ) + +def handle_static(match): + if len(match.group(0)) < max_len: + return match.group(0) + + (first_sep,sep) = if_else(string.find(match.group(0),'+') == -1, (' ',' '),(' ','+')) + return '%s%s\n%s%s' %\ + ( + match.group(1) + , string.join(string.split(match.group(2)), ' ') + , block_format( + (nearest_ident_pos(match.group(1))+ident,max_len) + , match.group(4) + , first_sep + , sep + ) + , match.group(5) + ) + +def handle_typedefs(match): + if string.count(match.group(2), ';') == 1: + return match.group(0) + + join_sep = ';\n%s' % match.group(1) + + return '%s%s\n' \ + % ( + match.group(1) + , string.join(map(string.strip, string.split(match.group(2), ';')), join_sep) + ) + +def fix_angle_brackets( match ): + return ' '.join( ''.join( match.group(1).split( ' ' ) ) ) + match.group(3) + + +class pretty: + def __init__(self, name): + self.output = open(name, "w") + self.prev_line = '' + + self.re_copyright_start = re.compile( r'^// Copyright .*$' ) + self.re_copyright_end = re.compile( r'^// See .* for documentation.$' ) + self.reading_copyright = 0 + self.copyright = None + + self.re_header_name_comment = re.compile( + r'^\s*//\s+\$[I]d:\s+(.*?%s\.hpp)\s+[^$]+[$]$' + % os.path.splitext( name )[0] + ) + + self.header_was_written = 0 + + self.re_junk = re.compile(r'^\s*(#|//[^/]|////).*$') + self.re_c_comment_start = re.compile(r'^\s*/\*.*') + self.re_c_comment_end = re.compile(r'^.*\*/\s*$') + self.inside_c_comment = 0 + + self.re_empty_line = re.compile(r'^\s*$') + self.re_comma = re.compile(r'(\S+)\s*,\s*') + self.re_assign = re.compile(r'(\S+[^<|^!|^>])\s*(=+)\s*(\S+)') + self.re_marked_empty_comment = re.compile(r'^\s*//\s*$') + self.re_typedef = re.compile(r'^\s+typedef\s+.*?;$') + self.re_nsl = re.compile(r'^(\s+typedef\s+.*?;|\s*(private|public):\s*|\s*{\s*|\s*(\w|\d|,)+\s*)$') + self.re_templ_decl = re.compile(r'^(\s*template\s*<\s*.*?|\s*(private|public):\s*)$') + self.re_type_const = re.compile(r'(const)\s+((unsigned|signed)?(bool|char|short|int|long))') + #self.re_templ_args = re.compile(r'^(\s*)(, | {2})((.*::.*?,?)+)\s*$') + self.re_templ_args = re.compile(r'^(\s*)(, | {2})((\s*(\w+)(\s+|::)\w+\s*.*?,?)+)\s*$') + self.re_inline_templ_args = re.compile( + r'^(\s+(,|:\s+)?|struct\s+)(\w+)\s*<((\s*(typename\s+)?\w+\s*(=\s*.*|<(\s*\w+\s*,?)+>\s*)?,?)+)\s*>\s+((struct|class).*?)?$' + ) + + self.re_simple_list = re.compile(r'(\w+)\s*<((\w|,| |-)+)>') + self.re_static_const = re.compile(r'(\s*)((BOOST_STATIC_CONSTANT\(\s*\w+,\s*|enum\s*\w*\s*{\s*)value\s*=)(.*?)([}|\)];)$') + self.re_typedefs = re.compile(r'(\s*)((\s*typedef\s*.*?;)+)\s*$') + self.re_fix_angle_brackets = re.compile( r'(>(\s*>)+)(,|\n$)' ) + self.re_closing_curly_brace = re.compile(r'^(}|struct\s+\w+);\s*$') + self.re_namespace_scope_templ = re.compile(r'^template\s*<\s*$') + self.re_namespace = re.compile(r'^\n?namespace\s+\w+\s*{\s*\n?$') + + def process(self, line): + if self.reading_copyright: + if not self.re_copyright_end.match( line ): + self.copyright += line + return + + self.reading_copyright = 0 + + if not self.header_was_written and self.re_copyright_start.match( line ): + self.copyright = line + self.reading_copyright = 1 + return + + # searching for header line + if not self.header_was_written: + if self.re_header_name_comment.match( line ): + self.header_was_written = 1 + match = self.re_header_name_comment.match( line ) + self.output.write( \ + '\n%s\n' \ + '// *Preprocessed* version of the main "%s" header\n' \ + '// -- DO NOT modify by hand!\n\n' \ + % ( self.copyright, match.group(1) ) + ) + return + + # skipping preprocessor directives, comments, etc. + if self.re_junk.match(line): + return + + if self.inside_c_comment or self.re_c_comment_start.match(line): + self.inside_c_comment = not self.re_c_comment_end.match(line) + return + + # restoring some empty lines + if self.re_templ_decl.match(line) and self.re_typedef.match(self.prev_line) \ + or not self.re_empty_line.match(line) and self.re_closing_curly_brace.match(self.prev_line) \ + or not self.re_empty_line.match(self.prev_line) \ + and ( self.re_namespace_scope_templ.match(line) \ + or self.re_namespace.match(line) and not self.re_namespace.match(self.prev_line) \ + ): + line = '\n%s' % line + + # removing excessive empty lines + if self.re_empty_line.match(line): + if self.re_empty_line.match(self.prev_line) or not self.header_was_written: + return + + # skip empty line after typedef + if self.re_nsl.match(self.prev_line): + return + + # formatting + line = self.re_comma.sub( r'\1, ', line ) + line = self.re_assign.sub( r'\1 \2 \3', line ) + line = self.re_marked_empty_comment.sub( r'\n', line ) + line = self.re_type_const.sub( r'\2 \1', line ) + line = self.re_templ_args.sub( handle_args, line ) + line = self.re_inline_templ_args.sub( handle_inline_args, line ) + line = self.re_simple_list.sub( handle_simple_list, line) + line = self.re_static_const.sub( handle_static, line ) + line = self.re_typedefs.sub( handle_typedefs, line ) + line = self.re_fix_angle_brackets.sub( fix_angle_brackets, line ) + + # write the output + self.output.write(line) + self.prev_line = line + +def main( src, dest ): + p = pretty( os.path.basename( dest ) ) + for line in fileinput.input( src ): + p.process(line) + +if __name__ == '__main__': + main( sys.argv[1], sys.argv[2] ) |