Add an objective-c header scanner so that #import dependencies can be found. To minimize code it reuses the c-scanner which is now moved into the cpp.jam type file.

[SVN r61358]

src/tools/builtin.jam

@@ -1,5 +1,5 @@
 # Copyright 2002, 2003, 2004, 2005 Dave Abrahams
-# Copyright 2002, 2005, 2006, 2007 Rene Rivera
+# Copyright 2002, 2005, 2006, 2007, 2010 Rene Rivera
 # Copyright 2006 Juergen Hunold
 # Copyright 2005 Toon Knapen
 # Copyright 2002, 2003, 2004, 2005, 2006 Vladimir Prus
@@ -429,86 +429,6 @@ class searched-lib-target : abstract-file-target
 }
 
 
-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) ;
-    }
-}
-
-
-type.register H   : h ;
-type.register HPP : hpp : H ;
-type.register C   : c ;
-
-scanner.register c-scanner : include ;
-
-# 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 ;
-
-
 # The generator class for libraries (target type LIB). Depending on properties
 # it will request building of the appropriate specific library type --
 # -- SHARED_LIB, STATIC_LIB or SHARED_LIB.

src/tools/types/cpp.jam

@@ -1,4 +1,86 @@
-# Copyright David Abrahams 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)
+# 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 CPP : cpp cxx cc ;
+type H   : h ;
+type HPP : hpp : H ;
+type 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 ;

src/tools/types/objc.jam

@@ -1,5 +1,26 @@
-# Copyright Rene Rivera 2008.
+# Copyright Rene Rivera 2008, 2010.
 # 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)
+import type ;
+import scanner ;
+import types/cpp ;
+
+class objc-scanner : c-scanner
+{
+    rule __init__ ( includes * )
+    {
+        c-scanner.__init__ $(includes) ;
+    }
+
+    rule pattern ( )
+    {
+        return "#[ \t]*include|import[ ]*(<(.*)>|\"(.*)\")" ;
+    }
+}
+
+scanner.register objc-scanner : include ;
+
 type OBJECTIVE_C : m ;
 type OBJECTIVE_CPP : mm ;
+type.set-scanner OBJECTIVE_C : objc-scanner ;
+type.set-scanner OBJECTIVE_CPP : objc-scanner ;