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Diffstat (limited to 'jam-files/boost-build/tools/types/cpp.jam')
-rw-r--r-- | jam-files/boost-build/tools/types/cpp.jam | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/jam-files/boost-build/tools/types/cpp.jam b/jam-files/boost-build/tools/types/cpp.jam new file mode 100644 index 00000000..3159cdd7 --- /dev/null +++ b/jam-files/boost-build/tools/types/cpp.jam @@ -0,0 +1,86 @@ +# Copyright David Abrahams 2004. +# Copyright 2002, 2003, 2004, 2005, 2006 Vladimir Prus +# Copyright 2010 Rene Rivera +# Distributed under the Boost Software License, Version 1.0. +# (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) +import type ; +import scanner ; + +class c-scanner : scanner +{ + import path ; + import regex ; + import scanner ; + import sequence ; + import virtual-target ; + + rule __init__ ( includes * ) + { + scanner.__init__ ; + + for local i in $(includes) + { + self.includes += [ sequence.transform path.native + : [ regex.split $(i:G=) "&&" ] ] ; + } + } + + rule pattern ( ) + { + return "#[ \t]*include[ ]*(<(.*)>|\"(.*)\")" ; + } + + rule process ( target : matches * : binding ) + { + local angle = [ regex.transform $(matches) : "<(.*)>" ] ; + angle = [ sequence.transform path.native : $(angle) ] ; + local quoted = [ regex.transform $(matches) : "\"(.*)\"" ] ; + quoted = [ sequence.transform path.native : $(quoted) ] ; + + # CONSIDER: the new scoping rule seem to defeat "on target" variables. + local g = [ on $(target) return $(HDRGRIST) ] ; + local b = [ NORMALIZE_PATH $(binding:D) ] ; + + # Attach binding of including file to included targets. When a target is + # directly created from virtual target this extra information is + # unnecessary. But in other cases, it allows us to distinguish between + # two headers of the same name included from different places. We do not + # need this extra information for angle includes, since they should not + # depend on including file (we can not get literal "." in include path). + local g2 = $(g)"#"$(b) ; + + angle = $(angle:G=$(g)) ; + quoted = $(quoted:G=$(g2)) ; + + local all = $(angle) $(quoted) ; + + INCLUDES $(target) : $(all) ; + NOCARE $(all) ; + SEARCH on $(angle) = $(self.includes:G=) ; + SEARCH on $(quoted) = $(b) $(self.includes:G=) ; + + # Just propagate the current scanner to includes in hope that includes + # do not change scanners. + scanner.propagate $(__name__) : $(angle) $(quoted) : $(target) ; + + ISFILE $(angle) $(quoted) ; + } +} + +scanner.register c-scanner : include ; + +type.register CPP : cpp cxx cc ; +type.register H : h ; +type.register HPP : hpp : H ; +type.register C : c ; + +# It most cases where a CPP file or a H file is a source of some action, we +# should rebuild the result if any of files included by CPP/H are changed. One +# case when this is not needed is installation, which is handled specifically. +type.set-scanner CPP : c-scanner ; +type.set-scanner C : c-scanner ; +# One case where scanning of H/HPP files is necessary is PCH generation -- if +# any header included by HPP being precompiled changes, we need to recompile the +# header. +type.set-scanner H : c-scanner ; +type.set-scanner HPP : c-scanner ; |