diff options
| author | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2007-07-23 09:13:44 +0000 |
|---|---|---|
| committer | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2007-07-23 09:13:44 +0000 |
| commit | 46eb6e9428918e78e852562a6926adc76f81ed97 (patch) | |
| tree | 540eb269108ceda0eb4c55d94c8c714e175c5e90 /parse.y | |
| parent | 3c5510565b4070ced940a29b90c79a1abe36a792 (diff) | |
| download | ruby-46eb6e9428918e78e852562a6926adc76f81ed97.tar.gz | |
* parse.y (value_expr_gen): warn for empty expression ().
[ruby-dev:31252]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12840 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'parse.y')
| -rw-r--r-- | parse.y | 11 |
1 files changed, 8 insertions, 3 deletions
@@ -1158,6 +1158,7 @@ expr_value : expr /*%%%*/ value_expr($1); $$ = $1; + if (!$$) $$ = NEW_NIL(); /*% $$ = $1; %*/ @@ -1772,7 +1773,6 @@ arg : lhs '=' arg | var_lhs tOP_ASGN arg { /*%%%*/ - value_expr($3); if ($1) { ID vid = $1->nd_vid; if ($2 == tOROP) { @@ -2206,6 +2206,7 @@ arg_value : arg /*%%%*/ value_expr($1); $$ = $1; + if (!$$) $$ = NEW_NIL(); /*% $$ = $1; %*/ @@ -2929,6 +2930,7 @@ primary_value : primary /*%%%*/ value_expr($1); $$ = $1; + if (!$$) $$ = NEW_NIL(); /*% $$ = $1; %*/ @@ -4299,8 +4301,9 @@ opt_f_block_arg : ',' f_block_arg singleton : var_ref { /*%%%*/ - $$ = $1; value_expr($1); + $$ = $1; + if (!$$) $$ = NEW_NIL(); /*% $$ = $1; %*/ @@ -7228,7 +7231,6 @@ gettable_gen(struct parser_params *parser, ID id) static NODE* assignable_gen(struct parser_params *parser, ID id, NODE *val) { - value_expr(val); if (id == keyword_self) { yyerror("Can't change the value of self"); } @@ -7447,6 +7449,9 @@ value_expr_gen(struct parser_params *parser, NODE *node) { int cond = 0; + if (!node) { + rb_warning0("empty expression"); + } while (node) { switch (nd_type(node)) { case NODE_DEFN: |