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llvm-mirror/test/FileCheck
James Henderson de9948f983 [FileCheck] Add CHECK-EMPTY directive for checking for blank lines
Prior to this change, there was no clean way of getting FileCheck to
check that a line is completely empty. The expected way of using
"CHECK: {{^$}}" does not work because the '^' matches the end of the
previous match (this behaviour may be desirable in certain instances).
For the same reason, "CHECK-NEXT: {{^$}}" will fail when the previous
match was at the end of the line, as the pattern will match there.
Using the recommended [[:space:]] to match an explicit new line could
also match a space, and thus is not always desired. Literal '\n'
matches also do not work. A workaround was suggested in the review, but
it is a little clunky.

This change adds a new directive that behaves the same as CHECK-NEXT,
except that it only matches against empty lines (nothing, not even
whitespace, is allowed). As with CHECK-NEXT, it will fail if more than
one newline occurs before the next blank line. Example usage:
; test.txt
foo

bar
; CHECK: foo
; CHECK-EMPTY:
; CHECK-NEXT: bar

Differential Revision: https://reviews.llvm.org/D28896

Reviewed by: probinson

llvm-svn: 335613
2018-06-26 15:15:45 +00:00
..
check-a-b-has-b.txt
check-b-a-has-b.txt
check-dag-multi-prefix-2.txt
check-dag-multi-prefix.txt
check-dag-substring-prefix.txt
check-dag-xfails.txt
check-dag.txt [FileCheck] Don't scan past the closing CHECK-DAG for CHECK-NOT inside CHECK-DAG 2017-06-07 12:06:45 +00:00
check-empty2.txt [FileCheck] - Fix possible buffer out of bounds access when parsing --check-prefix. 2018-01-16 08:09:24 +00:00
check-empty-tag.txt [FileCheck] Add CHECK-EMPTY directive for checking for blank lines 2018-06-26 15:15:45 +00:00
check-empty.txt
check-label-dag-capture.txt
check-label-dag.txt
check-label.txt
check-multi-prefix-label.txt
check-multiple-prefixes-mixed.txt
check-multiple-prefixes-nomatch-2.txt
check-multiple-prefixes-nomatch.txt
check-multiple-prefixes-substr.txt
check-not-diaginfo.txt
check-prefixes.txt
check-substring-multi-prefix-2.txt
check-substring-multi-prefix.txt
defines.txt Add a -D flag to FileCheck to define variables 2017-11-07 13:24:44 +00:00
dos-style-eol.txt
first-character-match.txt
implicit-check-not.txt
line-count-2.txt
line-count.txt [FileCheck] Added --enable-var-scope option to enable scope for regex variables. 2017-03-09 17:59:04 +00:00
match-full-lines.txt
multiple-missing-prefixes.txt
next-no-match.txt
no-multi-suffixes.txt
regex-brackets.txt
regex-no-match.txt
regex-scope.txt [llvm] Remove redundant check-prefix=CHECK from tests. NFC. 2017-07-17 17:32:45 +00:00
same.txt
separate-multi-prefix.txt
simple-var-capture.txt
two-checks-for-same-match.txt
validate-check-prefix.txt
var-ref-same-line.txt