From ccb59398e3774331b5bc0839237d7d5e8420a651 Mon Sep 17 00:00:00 2001
From: Per Hedbor <ph@opera.com>
Date: Sat, 3 Nov 2012 17:59:13 +0100
Subject: [PATCH] Implemented the safe index operator formerly known as ?[].
It has now been renamed to [?] since that does not conflict with any
other syntax in pike.
As an example:
int foo( array(int) a ) { return a[?10]; }
---
src/lexer.h | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/src/lexer.h b/src/lexer.h
index 86f68bc0a2..7d983a6f6f 100644
--- a/src/lexer.h
+++ b/src/lexer.h
@@ -1088,9 +1088,6 @@ unknown_directive:
They however conflict with valid ?: syntaxes.
*/
- /* if( GOBBLE('[' ) ) */
- /* return TOK_SAFE_START_INDEX; */
-
/* if( GOBBLE('.' ) ) */
/* return TOK_SAFE_INDEX; */
@@ -1099,12 +1096,16 @@ unknown_directive:
case '~':
case '@':
case ')':
- case '[':
case '{':
case ';':
case '}': return c;
+ case '[':
+ if( GOBBLE('?' ) )
+ return TOK_SAFE_START_INDEX;
+ return c;
+
case '`':
{
char *tmp;
--
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