49 lines
1.6 KiB
Ruby
49 lines
1.6 KiB
Ruby
class Bison < Formula
|
|
desc "Parser generator"
|
|
homepage "https://www.gnu.org/software/bison/"
|
|
url "https://ftp.gnu.org/gnu/bison/bison-3.2.1.tar.gz"
|
|
mirror "https://ftpmirror.gnu.org/bison/bison-3.2.1.tar.gz"
|
|
sha256 "01f33704298077dd39f3855ea2045bfc87f360395f52d6f4406b32fa3fdfecdd"
|
|
|
|
bottle do
|
|
sha256 "a5513ebde48dd4a88239b7645aa9da70c2275d622790edf1ce4cfbd04321e7ce" => :mojave
|
|
sha256 "b28a1d436ba721ac21a18a78b58bc5e24fa7741ad879cde4a33f849773d03a35" => :high_sierra
|
|
sha256 "5718deca6a4f62302ec970d4964935f99f34f058cceae571c552bcf44c9f47e6" => :sierra
|
|
end
|
|
|
|
keg_only :provided_by_macos, "some formulae require a newer version of bison"
|
|
|
|
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
|