Commit | Line | Data |
---|---|---|
d30bcfc1 NC |
1 | |
2 | # How to generate the logic of the lookup table Perl_keyword() in toke.c | |
3 | ||
35175a9c | 4 | use Devel::Tokenizer::C 0.05; |
d30bcfc1 | 5 | use strict; |
4c3bbe0f | 6 | use warnings; |
d30bcfc1 NC |
7 | |
8 | my @pos = qw(__DATA__ __END__ AUTOLOAD BEGIN CHECK DESTROY do delete defined | |
9 | END else eval elsif exists for format foreach grep goto glob INIT | |
10 | if last local m my map next no our pos print printf package | |
11 | prototype q qr qq qw qx redo return require s scalar sort split | |
12 | study sub tr tie tied use undef until untie unless while y); | |
13 | ||
14 | my @neg = qw(__FILE__ __LINE__ __PACKAGE__ and abs alarm atan2 accept bless | |
15 | bind binmode CORE cmp chr cos chop close chdir chomp chmod chown | |
16 | crypt chroot caller connect closedir continue die dump dbmopen | |
17 | dbmclose eq eof err exp exit exec each endgrent endpwent | |
18 | endnetent endhostent endservent endprotoent fork fcntl flock | |
19 | fileno formline getppid getpgrp getpwent getpwnam getpwuid | |
20 | getpeername getprotoent getpriority getprotobyname | |
21 | getprotobynumber gethostbyname gethostbyaddr gethostent | |
22 | getnetbyname getnetbyaddr getnetent getservbyname getservbyport | |
23 | getservent getsockname getsockopt getgrent getgrnam getgrgid | |
24 | getlogin getc gt ge gmtime hex int index ioctl join keys kill lt | |
25 | le lc log link lock lstat length listen lcfirst localtime mkdir | |
26 | msgctl msgget msgrcv msgsnd ne not or ord oct open opendir pop | |
27 | push pack pipe quotemeta ref read rand recv rmdir reset rename | |
28 | rindex reverse readdir readlink readline readpipe rewinddir seek | |
29 | send semop select semctl semget setpgrp seekdir setpwent setgrent | |
30 | setnetent setsockopt sethostent setservent setpriority | |
31 | setprotoent shift shmctl shmget shmread shmwrite shutdown sin | |
32 | sleep socket socketpair sprintf splice sqrt srand stat substr | |
33 | system symlink syscall sysopen sysread sysseek syswrite tell time | |
34 | times telldir truncate uc utime umask unpack unlink unshift | |
35 | ucfirst values vec warn wait write waitpid wantarray x xor); | |
36 | ||
4c3bbe0f MHM |
37 | my %pos = map { ($_ => 1) } @pos; |
38 | ||
39 | my $t = Devel::Tokenizer::C->new( TokenFunc => \&perl_keyword | |
40 | , TokenString => 'name' | |
41 | , StringLength => 'len' | |
42 | , MergeSwitches => 1 | |
43 | ); | |
44 | ||
45 | $t->add_tokens(@pos, @neg, 'elseif'); | |
d30bcfc1 | 46 | |
4c3bbe0f MHM |
47 | my $switch = $t->generate(Indent => ' '); |
48 | ||
49 | print <<END; | |
50 | /* | |
51 | * The following code was generated by $0. | |
52 | */ | |
53 | ||
54 | I32 | |
672994ce | 55 | Perl_keyword (pTHX_ const char *name, I32 len) |
4c3bbe0f MHM |
56 | { |
57 | $switch | |
58 | unknown: | |
59 | return 0; | |
60 | } | |
61 | END | |
62 | ||
63 | sub perl_keyword | |
64 | { | |
65 | my $k = shift; | |
66 | my $sign = $pos{$k} ? '' : '-'; | |
67 | ||
68 | if ($k eq 'elseif') { | |
69 | return <<END; | |
d30bcfc1 NC |
70 | if(ckWARN_d(WARN_SYNTAX)) |
71 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "elseif should be elsif"); | |
4c3bbe0f MHM |
72 | END |
73 | } | |
d30bcfc1 | 74 | |
4c3bbe0f MHM |
75 | return <<END; |
76 | return ${sign}KEY_$k; | |
77 | END | |
78 | } |