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| author | Larry Wall <lwall@jpl-devvax.jpl.nasa.gov> | 1988-01-27 22:18:25 +0000 |
|---|---|---|
| committer | Larry Wall <lwall@jpl-devvax.jpl.nasa.gov> | 1988-01-27 22:18:25 +0000 |
| commit | a559c25918b1466cdb50c9f978a86f01be0bac10 (patch) | |
| tree | ffbe6c7bc07144d291a61555d002e7969110f248 /perl.y | |
| parent | a1cc2bdc08f9aa1504f32e5b0b782c2b3cffd124 (diff) | |
| download | perl-a559c25918b1466cdb50c9f978a86f01be0bac10.tar.gz | |
perl 1.0 patch 8: perl needed an eval operator and a symbolic debugger
I didn't add an eval operator to the original perl because
I hadn't thought of any good uses for it. Recently I thought
of some. Along with creating the eval operator, this patch
introduces a symbolic debugger for perl scripts, which makes
use of eval to interpret some debugging commands. Having eval
also lets me emulate awk's FOO=bar command line behavior with
a line such as the one a2p now inserts at the beginning of
translated scripts.
Diffstat (limited to 'perl.y')
| -rw-r--r-- | perl.y | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -1,6 +1,9 @@ -/* $Header: perl.y,v 1.0 87/12/18 15:48:59 root Exp $ +/* $Header: perl.y,v 1.0.1.1 88/01/28 10:25:31 root Exp $ * * $Log: perl.y,v $ + * Revision 1.0.1.1 88/01/28 10:25:31 root + * patch8: added eval operator. + * * Revision 1.0 87/12/18 15:48:59 root * Initial revision * @@ -97,7 +100,10 @@ char *tokename[] = { %% /* RULES */ prog : lineseq - { main_root = block_head($1); } + { if (in_eval) + eval_root = block_head($1); + else + main_root = block_head($1); } ; compblock: block CONTINUE block |