blob: 5c73269995a9927f3fd73e85fcf27ab58c7fa8f2 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
# Throw an exception.
# The first argument is a string giving the exception. Other arguments
# are ignored.
#
# This is designed to be called somewhere inside a "try-block", i.e.
# some code of the form:
# {
# # try-block
# } always {
# # always-block
# }
# although as normal with exceptions it might be hidden deep inside
# other code. Note, however, that it must be code running within the
# current shell; with shells, unlike other languages, it is quite easy
# to miss points at which the shell forks.
#
# If there is nothing to catch an exception, this behaves like any
# other shell error, aborting to the command prompt or abandoning a
# script.
# The following must not be local.
typeset -g EXCEPTION="$1"
readonly THROW
if (( TRY_BLOCK_ERROR == 0 )); then
# We are throwing an exception from the middle of an always-block.
# We can do this by restoring the error status from the try-block.
(( TRY_BLOCK_ERROR = 1 ))
fi
# Raise an error, but don't show an error message.
THROW= 2>/dev/null
|
