[njs] Fixed parsing of throw statement inside if.

[Dmitry Volyntsev]

details:   https://hg.nginx.org/njs/rev/b3691d847ff4
branches:  
changeset: 665:b3691d847ff4
user:      Dmitry Volyntsev <xeioex at nginx.com>
date:      Thu Nov 22 17:38:40 2018 +0300
description:
Fixed parsing of throw statement inside if.

diffstat:

 njs/njs_parser.c         |  18 +++++++++++++++++-
 njs/test/njs_unit_test.c |   9 +++++++++
 2 files changed, 26 insertions(+), 1 deletions(-)

diffs (47 lines):

diff -r 3b2689be3a57 -r b3691d847ff4 njs/njs_parser.c
--- a/njs/njs_parser.c	Thu Nov 22 17:38:25 2018 +0300
+++ b/njs/njs_parser.c	Thu Nov 22 17:38:40 2018 +0300
@@ -1696,7 +1696,23 @@ njs_parser_try_statement(njs_vm_t *vm, n
 
     parser->node = try;
 
-    return token;
+    switch (token) {
+
+    case NJS_TOKEN_SEMICOLON:
+    case NJS_TOKEN_LINE_END:
+        return njs_parser_token(parser);
+
+    case NJS_TOKEN_CLOSE_BRACE:
+    case NJS_TOKEN_END:
+        return token;
+
+    default:
+        if (parser->lexer->prev_token == NJS_TOKEN_LINE_END) {
+            return token;
+        }
+
+        return NJS_TOKEN_ILLEGAL;
+    }
 }
 
 
diff -r 3b2689be3a57 -r b3691d847ff4 njs/test/njs_unit_test.c
--- a/njs/test/njs_unit_test.c	Thu Nov 22 17:38:25 2018 +0300
+++ b/njs/test/njs_unit_test.c	Thu Nov 22 17:38:40 2018 +0300
@@ -2159,6 +2159,15 @@ static njs_unit_test_t  njs_test[] =
     { nxt_string("(function(){ if(true) return 1\n;\n else return 0; })()"),
       nxt_string("1") },
 
+    { nxt_string("function f(n) {if (n)\n throw 'foo'\nelse return 1}; f(0)"),
+      nxt_string("1") },
+
+    { nxt_string("function f(n) {if (n)\n throw 'foo'\nelse return 1}; f(1)"),
+      nxt_string("foo") },
+
+    { nxt_string("function f(n) {if (n == 1) throw 'foo'\nelse if (n == 2) return 1}; f(2)"),
+      nxt_string("1") },
+
     /* do while. */
 
     { nxt_string("do { break } if (false)"),