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authorKenneth Heafield <github@kheafield.com>2012-10-22 12:07:20 +0100
committerKenneth Heafield <github@kheafield.com>2012-10-22 12:07:20 +0100
commit5f98fe5c4f2a2090eeb9d30c030305a70a8347d1 (patch)
tree9b6002f850e6dea1e3400c6b19bb31a9cdf3067f /jam-files/boost-build/kernel/errors.jam
parentcf9994131993b40be62e90e213b1e11e6b550143 (diff)
parent21825a09d97c2e0afd20512f306fb25fed55e529 (diff)
Merge remote branch 'upstream/master'
Conflicts: Jamroot bjam decoder/Jamfile decoder/cdec.cc dpmert/Jamfile jam-files/sanity.jam klm/lm/Jamfile klm/util/Jamfile mira/Jamfile
Diffstat (limited to 'jam-files/boost-build/kernel/errors.jam')
-rw-r--r--jam-files/boost-build/kernel/errors.jam274
1 files changed, 0 insertions, 274 deletions
diff --git a/jam-files/boost-build/kernel/errors.jam b/jam-files/boost-build/kernel/errors.jam
deleted file mode 100644
index 63b11e86..00000000
--- a/jam-files/boost-build/kernel/errors.jam
+++ /dev/null
@@ -1,274 +0,0 @@
-# Copyright 2003 Dave Abrahams
-# Copyright 2004 Vladimir Prus
-# 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)
-
-# Print a stack backtrace leading to this rule's caller. Each argument
-# represents a line of output to be printed after the first line of the
-# backtrace.
-#
-rule backtrace ( skip-frames prefix messages * : * )
-{
- local frame-skips = 5 9 13 17 21 25 29 33 37 41 45 49 53 57 61 65 69 73 77 81 ;
- local drop-elements = $(frame-skips[$(skip-frames)]) ;
- if ! ( $(skip-frames) in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 )
- {
- ECHO "warning: backtrace doesn't support skipping $(skip-frames) frames;"
- "using 1 instead." ;
- drop-elements = 5 ;
- }
-
- local args = $(.args) ;
- if $(.user-modules-only)
- {
- local bt = [ nearest-user-location ] ;
- ECHO "$(prefix) at $(bt) " ;
- for local n in $(args)
- {
- if $($(n))-is-not-empty
- {
- ECHO $(prefix) $($(n)) ;
- }
- }
- }
- else
- {
- # Get the whole backtrace, then drop the initial quadruples
- # corresponding to the frames that must be skipped.
- local bt = [ BACKTRACE ] ;
- bt = $(bt[$(drop-elements)-]) ;
-
- while $(bt)
- {
- local m = [ MATCH ^(.+)\\.$ : $(bt[3]) ] ;
- ECHO $(bt[1]):$(bt[2]): "in" $(bt[4]) "from module" $(m) ;
-
- # The first time through, print each argument on a separate line.
- for local n in $(args)
- {
- if $($(n))-is-not-empty
- {
- ECHO $(prefix) $($(n)) ;
- }
- }
- args = ; # Kill args so that this never happens again.
-
- # Move on to the next quadruple.
- bt = $(bt[5-]) ;
- }
- }
-}
-
-.args ?= messages 2 3 4 5 6 7 8 9 ;
-.disabled ?= ;
-.last-error-$(.args) ?= ;
-
-
-# try-catch --
-#
-# This is not really an exception-handling mechanism, but it does allow us to
-# perform some error-checking on our error-checking. Errors are suppressed after
-# a try, and the first one is recorded. Use catch to check that the error
-# message matched expectations.
-
-# Begin looking for error messages.
-#
-rule try ( )
-{
- .disabled += true ;
- .last-error-$(.args) = ;
-}
-
-
-# Stop looking for error messages; generate an error if an argument of messages
-# is not found in the corresponding argument in the error call.
-#
-rule catch ( messages * : * )
-{
- .disabled = $(.disabled[2-]) ; # Pop the stack.
-
- import sequence ;
-
- if ! $(.last-error-$(.args))-is-not-empty
- {
- error-skip-frames 3 expected an error, but none occurred ;
- }
- else
- {
- for local n in $(.args)
- {
- if ! $($(n)) in $(.last-error-$(n))
- {
- local v = [ sequence.join $($(n)) : " " ] ;
- v ?= "" ;
- local joined = [ sequence.join $(.last-error-$(n)) : " " ] ;
-
- .last-error-$(.args) = ;
- error-skip-frames 3 expected \"$(v)\" in argument $(n) of error
- : got \"$(joined)\" instead ;
- }
- }
- }
-}
-
-
-rule error-skip-frames ( skip-frames messages * : * )
-{
- if ! $(.disabled)
- {
- backtrace $(skip-frames) error: $(messages) : $(2) : $(3) : $(4) : $(5) : $(6) : $(7) : $(8) : $(9) ;
- EXIT ;
- }
- else if ! $(.last-error-$(.args))
- {
- for local n in $(.args)
- {
- # Add an extra empty string so that we always have
- # something in the event of an error
- .last-error-$(n) = $($(n)) "" ;
- }
- }
-}
-
-if --no-error-backtrace in [ modules.peek : ARGV ]
-{
- .no-error-backtrace = true ;
-}
-
-
-# Print an error message with a stack backtrace and exit.
-#
-rule error ( messages * : * )
-{
- if $(.no-error-backtrace)
- {
- # Print each argument on a separate line.
- for local n in $(.args)
- {
- if $($(n))-is-not-empty
- {
- if ! $(first-printed)
- {
- ECHO error: $($(n)) ;
- first-printed = true ;
- }
- else
- {
- ECHO $($(n)) ;
- }
- }
- }
- EXIT ;
- }
- else
- {
- error-skip-frames 3 $(1) : $(2) : $(3) : $(4) : $(5) : $(6) : $(7) : $(8) : $(9) ;
- }
-}
-
-
-# Same as 'error', but the generated backtrace will include only user files.
-#
-rule user-error ( messages * : * )
-{
- .user-modules-only = 1 ;
- error-skip-frames 3 $(1) : $(2) : $(3) : $(4) : $(5) : $(6) : $(7) : $(8) : $(9) ;
-}
-
-
-# Print a warning message with a stack backtrace and exit.
-#
-rule warning
-{
- backtrace 2 warning: $(1) : $(2) : $(3) : $(4) : $(5) : $(6) : $(7) : $(8) : $(9) ;
-}
-
-
-# Convert an arbitrary argument list into a list with ":" separators and quoted
-# elements representing the same information. This is mostly useful for
-# formatting descriptions of arguments with which a rule was called when
-# reporting an error.
-#
-rule lol->list ( * )
-{
- local result ;
- local remaining = 1 2 3 4 5 6 7 8 9 ;
- while $($(remaining))
- {
- local n = $(remaining[1]) ;
- remaining = $(remaining[2-]) ;
-
- if $(n) != 1
- {
- result += ":" ;
- }
- result += \"$($(n))\" ;
- }
- return $(result) ;
-}
-
-
-# Return the file:line for the nearest entry in backtrace which correspond to a
-# user module.
-#
-rule nearest-user-location ( )
-{
- local bt = [ BACKTRACE ] ;
-
- local result ;
- while $(bt) && ! $(result)
- {
- local m = [ MATCH ^(.+)\\.$ : $(bt[3]) ] ;
- local user-modules = ([Jj]amroot(.jam|.v2|)|([Jj]amfile(.jam|.v2|)|user-config.jam|site-config.jam|project-root.jam) ;
-
- if [ MATCH $(user-modules) : $(bt[1]:D=) ]
- {
- result = $(bt[1]):$(bt[2]) ;
- }
- bt = $(bt[5-]) ;
- }
- return $(result) ;
-}
-
-
-# If optimized rule is available in Jam, use it.
-if NEAREST_USER_LOCATION in [ RULENAMES ]
-{
- rule nearest-user-location ( )
- {
- local r = [ NEAREST_USER_LOCATION ] ;
- return $(r[1]):$(r[2]) ;
- }
-}
-
-
-rule __test__ ( )
-{
- # Show that we can correctly catch an expected error.
- try ;
- {
- error an error occurred : somewhere ;
- }
- catch an error occurred : somewhere ;
-
- # Show that unexpected errors generate real errors.
- try ;
- {
- try ;
- {
- error an error occurred : somewhere ;
- }
- catch an error occurred : nowhere ;
- }
- catch expected \"nowhere\" in argument 2 ;
-
- # Show that not catching an error where one was expected is an error.
- try ;
- {
- try ;
- {
- }
- catch ;
- }
- catch expected an error, but none occurred ;
-}