Change in coreboot[master]: util/kconfig_lint: Update handle_expressions()

[Nico Huber (Code Review)]

Attention is currently required from: Martin Roth.
Nico Huber has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/52068 )

Change subject: util/kconfig_lint: Update handle_expressions()
......................................................................

util/kconfig_lint: Update handle_expressions()

More relational operators were added to Kconfig in 2015. Now we can
make use of them.

Change-Id: I640e5c3ee1485348f09fcb0b0d5035eb53a2c98e
Signed-off-by: Nico Huber 
---
M util/lint/kconfig_lint
1 file changed, 9 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/68/52068/1

diff --git a/util/lint/kconfig_lint b/util/lint/kconfig_lint
index 51cc226..b72d34a 100755
--- a/util/lint/kconfig_lint
+++ b/util/lint/kconfig_lint
@@ -988,20 +988,26 @@
     my $balanced = qr/((?:$parens|$quotes|[^()"])+)/;

if ( $exprline =~ /^\s*$balanced\s*(?:|||&&)\s*(.+)$/ ) {
-        # <expr> '||' <expr>, <expr> '&&' <expr>                  (7)(6)
+        # <expr> '||' <expr>, <expr> '&&' <expr>                  (8)(7)
         my ( $lhs, $rhs ) = ( $1, $3 );
         handle_expressions( $lhs, $inside_config, $filename, $line_no );
         handle_expressions( $rhs, $inside_config, $filename, $line_no );
     }
     elsif ( $exprline =~ /^\s*!(.+)$/ ) {
-        # '!' <expr>                                                 (5)
+        # '!' <expr>                                                 (6)
         handle_expressions( $1, $inside_config, $filename, $line_no );
     }
     elsif ( $exprline =~ /^\s*$parens\s*$/ ) {
-        # '(' <expr> ')'                                             (4)
+        # '(' <expr> ')'                                             (5)
         $exprline =~ /^\s*((.*))\s*$/;
         handle_expressions( $1, $inside_config, $filename, $line_no );
     }
+    elsif ( $exprline =~ /^\s*($quotes|[^"\s]+)\s*[<>]=?$strip$/ ) {
+        # <symbol> '<' <symbol>, <symbol> '<=' <symbol>, etc.        (4)
+        my ( $lhs, $rhs ) = ( $1, $2 );
+        handle_symbol( $lhs, $filename, $line_no );
+        handle_symbol( $rhs, $filename, $line_no );
+    }
     elsif ( $exprline =~ /^\s*($quotes|[^"\s]+)\s*!=$strip$/ ) {
         # <symbol> '!=' <symbol>                                     (3)
         my ( $lhs, $rhs ) = ( $1, $2 );