From 01a4164aed15f8444d01caf9fc588576a8d0e37f Mon Sep 17 00:00:00 2001 From: Ian Hinder Date: Mon, 6 Feb 2012 17:58:15 -0600 Subject: kranc2.peg: Identify lower and upper indices in the parser Previously this logic was in Kranc, where it has to be more complicated. --- Auxiliary/Grammars/kranc2.peg | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'Auxiliary') diff --git a/Auxiliary/Grammars/kranc2.peg b/Auxiliary/Grammars/kranc2.peg index a98aaf7..91ea573 100644 --- a/Auxiliary/Grammars/kranc2.peg +++ b/Auxiliary/Grammars/kranc2.peg @@ -3,7 +3,9 @@ int = [0-9]+ end = ([ \t]+|#.*)*\r*\n name = [A-Za-z][A-Za-z0-9]* uname = [A-Za-z][A-Za-z0-9_]* -indices = ([_^]({index_symbol}|\({index_expr}(,{index_expr})*\))+)* +lower_index = ({index_symbol}|\({index_expr}(,{index_expr})*\)) +upper_index = ({index_symbol}|\({index_expr}(,{index_expr})*\)) +indices = (\_{lower_index}+|\^{upper_index}+)* index_symbol = [a-zA-Z]'*|[0-9] index_expr = {index_symbol}([+-]{int}|) tensor = {name}{indices} -- cgit v1.2.3