details: https://hg.nginx.org/njs/rev/a9a4ffdea79c
branches:
changeset: 941:a9a4ffdea79c
user: Valentin Bartenev <vbart@nginx.com>
date: Thu May 02 21:21:16 2019 +0300
description:
Rejection of multiple "var" declarations in the for-in statement.

diffstat:

njs/njs_parser.c | 8 ++++++--
njs/test/njs_unit_test.c | 3 +++
2 files changed, 9 insertions(+), 2 deletions(-)

diffs (31 lines):

diff -r ae95d2637819 -r a9a4ffdea79c njs/njs_parser.c
--- a/njs/njs_parser.c Thu May 02 11:08:44 2019 +0300
+++ b/njs/njs_parser.c Thu May 02 21:21:16 2019 +0300
@@ -1078,8 +1078,12 @@ njs_parser_var_statement(njs_vm_t *vm, n
return token;
}

- if (var_in && token == NJS_TOKEN_IN) {
- return njs_parser_var_in_statement(vm, parser, name);
+ if (var_in) {
+ if (token == NJS_TOKEN_IN) {
+ return njs_parser_var_in_statement(vm, parser, name);
+ }
+
+ var_in = 0;
}

expr = NULL;
diff -r ae95d2637819 -r a9a4ffdea79c njs/test/njs_unit_test.c
--- a/njs/test/njs_unit_test.c Thu May 02 11:08:44 2019 +0300
+++ b/njs/test/njs_unit_test.c Thu May 02 21:21:16 2019 +0300
@@ -2265,6 +2265,9 @@ static njs_unit_test_t njs_test[] =
{ nxt_string("for (null in undefined);"),
nxt_string("ReferenceError: Invalid left-hand side \"null\" in for-in statement in 1") },

+ { nxt_string("for (var a, b in []);"),
+ nxt_string("SyntaxError: Unexpected token \"in\" in 1") },
+
{ nxt_string("var s = ''; for (var p in [1,2]) {s += p}; s"),
nxt_string("01") },

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