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parse.y/anonymous_function: Allow conditionals between begin_lambda and lambda_body

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This is to allow conditional statements following a lambda header
(begin_lambda) just as is done with func_hdr conditional_list func_body.
This commit is contained in:
Arne Welzel 2022-08-16 20:13:33 +02:00
parent fad18cb352
commit c6ca89a590
10 changed files with 122 additions and 2 deletions
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106
testing/btest/language/at-if-lambda.zeek Normal file
View file

@ -0,0 +1,106 @@
# @TEST-DOC: Regression test for #2075 from 0xxon
# @TEST-EXEC: zeek -b %INPUT
# @TEST-EXEC: TEST_DIFF_CANONIFIER= btest-diff .stdout
# @TEST-EXEC: TEST_DIFF_CANONIFIER= btest-diff .stderr
@load base/misc/version
event zeek_init()
{
local make_epoch_result = function(pass_name: string): function(ts: time): time
{
@if ( Version::at_least("4.1") )
return function [pass_name] (ts: time): time
@else
return function (ts: time)
@endif
{
print pass_name;
return ts;
};
};
local ts = double_to_time(1660671192.0);
local f = make_epoch_result("cookie");
local result = f(ts);
print type_name(make_epoch_result), type_name(f), type_name(result), result;
}
@TEST-START-NEXT
# Place braces differently
@load base/misc/version
event zeek_init()
{
local make_epoch_result = function(pass_name: string): function(ts: time): time
{
@if ( Version::at_least("4.1") )
return function [pass_name] (ts: time): time {
@else
return function (ts: time) {
@endif
print pass_name;
return ts;
};
};
local ts = double_to_time(1660671192.0);
local f = make_epoch_result("cookie");
local result = f(ts);
print type_name(make_epoch_result), type_name(f), type_name(result), result;
}
@TEST-START-NEXT
# This example doesn't make a whole lot of sense, but adding more @ifdef'ery
# around lambdas.
@load base/misc/version
@load base/utils/numbers
global toggle = F;
event zeek_init()
{
@if ( toggle )
local f = function(ts_str: string, offset: count &default=10): time
@else
local f = function(ts_str: string): time
@endif
{
local c = extract_count(ts_str);
@if ( toggle )
c += offset;
@endif
return double_to_time(c);
};
local result = f("1660671192.0");
print type_name(f), type_name(result), result;
}
@TEST-START-NEXT
# Same as above, but toggle T
@load base/utils/numbers
global toggle = T;
event zeek_init()
{
@if ( toggle )
local f = function(ts_str: string, offset: count &default=10): time
@else
local f = function(ts_str: string): time
@endif
{
local c = extract_count(ts_str);
@if ( toggle )
c += offset;
@endif
return double_to_time(c);
};
local result = f("1660671192.0");
print type_name(f), type_name(result), result;
}