homebrew-core/Formula/bison@2.7.rb
2017-10-20 14:10:54 +01:00

57 lines
1.8 KiB
Ruby

class BisonAT27 < Formula
desc "Parser generator"
homepage "https://www.gnu.org/software/bison/"
url "https://ftp.gnu.org/gnu/bison/bison-2.7.1.tar.gz"
mirror "https://ftpmirror.gnu.org/bison/bison-2.7.1.tar.gz"
sha256 "08e2296b024bab8ea36f3bb3b91d071165b22afda39a17ffc8ff53ade2883431"
revision 1
bottle do
sha256 "ee0e758aa798809aaa3e94f1e3659c9d33497a577c25cfc03ecfe18c25862837" => :high_sierra
sha256 "7f1f717becaf0a818b154d3706b88f6c61a102b4f909e030005aaa5433abc34e" => :sierra
sha256 "3b49ff1a76807438bfb6805e513d372fba8d49c0259fe4f28e1587d47e42bf5c" => :el_capitan
end
keg_only :versioned_formula
if MacOS.version >= :high_sierra
patch :p0 do
url "https://raw.githubusercontent.com/macports/macports-ports/b76d1e48dac/editors/nano/files/secure_snprintf.patch"
sha256 "57f972940a10d448efbd3d5ba46e65979ae4eea93681a85e1d998060b356e0d2"
end
end
def install
system "./configure", "--disable-dependency-tracking",
"--prefix=#{prefix}"
system "make", "install"
end
test do
(testpath/"test.y").write <<~EOS
%{ #include <iostream>
using namespace std;
extern void yyerror (char *s);
extern int yylex ();
%}
%start prog
%%
prog: // empty
| prog expr '\\n' { cout << "pass"; exit(0); }
;
expr: '(' ')'
| '(' expr ')'
| expr expr
;
%%
char c;
void yyerror (char *s) { cout << "fail"; exit(0); }
int yylex () { cin.get(c); return c; }
int main() { yyparse(); }
EOS
system "#{bin}/bison", "test.y"
system ENV.cxx, "test.tab.c", "-o", "test"
assert_equal "pass", shell_output("echo \"((()(())))()\" | ./test")
assert_equal "fail", shell_output("echo \"())\" | ./test")
end
end