[gentoo-commits] proj/libbash:master commit in: bashast/, bashast/gunit/

["Petteri Räty" <betelgeuse@gentoo.org>]

commit:     fc8333e273165af0d86ede790afa84e8eac8d283
Author:     Petteri Räty <petsku <AT> petteriraty <DOT> eu>
AuthorDate: Tue Apr 12 07:11:14 2011 +0000
Commit:     Petteri Räty <betelgeuse <AT> gentoo <DOT> org>
CommitDate: Tue Apr 12 07:11:14 2011 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/libbash.git;a=commit;h=fc8333e2

Refer to array indexes with arithmetic expressions

You can refer to array members using arithmetic expressions like for
example ${arr[i+3]}.

---
 bashast/bashast.g         |    2 +-
 bashast/gunit/array.gunit |    1 +
 2 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/bashast/bashast.g b/bashast/bashast.g
index 510ef90..18f6913 100644
--- a/bashast/bashast.g
+++ b/bashast/bashast.g
@@ -259,7 +259,7 @@ parameter_replace_operator
 //Allowable refences to values
 //either directly or through array
 var_name:	num
-	|	name^ LSQUARE! (DIGIT+|AT|TIMES) RSQUARE!
+	|	name^ LSQUARE! (AT|TIMES|explicit_arithmetic) RSQUARE!
 	|	name
 	|	POUND;
 //with bang the array syntax is used for array indexes

diff --git a/bashast/gunit/array.gunit b/bashast/gunit/array.gunit
index d21ed6a..f1e87e0 100644
--- a/bashast/gunit/array.gunit
+++ b/bashast/gunit/array.gunit
@@ -28,6 +28,7 @@ var_ref:
 "${asdf[0]:-default}" -> (VAR_REF (:- (asdf 0) (STRING default)))
 "${asdf[3]}" -> (VAR_REF (asdf 3))
 "${asdf[4] }" -> (VAR_REF (asdf 4))
+"${asdf[i*2]}" -> (VAR_REF (asdf (* (VAR_REF i) 2))))
 "${asdf[1]:2:2}" -> (VAR_REF (OFFSET (asdf 1) 2 2))
 "${asdf[2]##word}" -> (VAR_REF (## (asdf 2) (STRING word)))
 "${asdf[3]%%word}" -> (VAR_REF (%% (asdf 3) (STRING word)))