mirrors/bird
mirrors/bird
0
0
Fork 0
mirror of https://gitlab.nic.cz/labs/bird.git synced 2024-12-22 09:41:54 +00:00
Code Releases Activity

Filter: Fix scope handling in for loops

Browse Source 
Changes in scope implementation broke scope handling in for loops.
The term in for loops is supposed to be parsed in the parent scope.
This commit is contained in:
Ondrej Zajicek 2023-10-05 14:26:22 +02:00
parent abae806efd
commit de09fda5dc
2 changed files with 61 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
filter/config.Y
View File

@ -20,6 +20,7 @@ static inline u32 pair_a(u32 p) { return p >> 16; }
static inline u32 pair_b(u32 p) { return p & 0xFFFF; }
static struct symbol *this_function;
static struct sym_scope *this_for_scope;
static struct f_method_scope {
struct f_inst *object;
@ -993,7 +994,9 @@ cmd:
new_config->current_scope->slots += 2;
} for_var IN
/* Parse term in the parent scope */
{ new_config->current_scope->active = 0; } term { new_config->current_scope->active = 1; }
{ this_for_scope = new_config->current_scope; new_config->current_scope = this_for_scope->next; }
term
{ new_config->current_scope = this_for_scope; this_for_scope = NULL; }
DO cmd {
cf_pop_block_scope(new_config);
$$ = f_for_cycle($3, $6, $9);

57
filter/test.conf
View File

@ -1938,6 +1938,63 @@ bt_test_suite(t_if_else, "Testing if-else statement");
/*
* Test for-in statement
* ---------------------
*/
function t_for_in()
{
bgppath p = +empty+.prepend(5).prepend(4).prepend(3).prepend(2).prepend(1);
bgppath q = +empty+.prepend(30).prepend(20).prepend(10);
int a;
# basic for loop
a = 0;
for int i in p do {
a = 2 * a + i;
}
bt_assert(a = 57);
# basic for loop, no braces
a = 0;
for int i in p do a = 2 * a + i;
bt_assert(a = 57);
# for loop with empty body
a = 0;
for int i in p do { }
bt_assert(a = 0);
# for loop over empty path
a = 0;
for int i in +empty+ do a = 1;
bt_assert(a = 0);
# for loop with var name shadowing
a = 0;
for int p in p do {
a = 2 * a + p;
}
bt_assert(a = 57);
# nested for loops
a = 0;
int n = 1;
for int i in p do {
for int j in q do {
a = a + i * j * n;
n = n + 1;
}
}
bt_assert(a = 9300);
}
bt_test_suite(t_for_in, "Testing for-in statement");
/*
* Unused functions -- testing only parsing
* ----------------------------------------